Signed-off-by: Jason Wessel <[email protected]>
powerpc-lite.patch
From: Jason Wessel <[email protected]>
CC: [email protected]
Subject: [PATCH] This adds basic KGDB support for both arch/ppc and arch/powerpc.
Both the ppc and powerpc arch are covered by this patch to add the
core unified kgdb support. The patch also cleans up the rs232 handlers
for many boards to unify kgdb support as well.
Signed-off-by: Vitaly Wool <[email protected]>
Signed-off-by: Sergey Shtylyov <[email protected]>
Signed-off-by: Vitaly Bordug <[email protected]>
Signed-off-by: Tom Rini <[email protected]>
Signed-off-by: Jason Wessel <[email protected]>
---
arch/powerpc/Kconfig.debug | 50 -
arch/powerpc/kernel/Makefile | 6
arch/powerpc/kernel/kgdb.c | 394 ++++++++++++
arch/powerpc/kernel/kgdb_setjmp32.S | 41 +
arch/powerpc/kernel/kgdb_setjmp64.S | 77 ++
arch/powerpc/kernel/legacy_serial.c | 6
arch/powerpc/kernel/setup_32.c | 16
arch/powerpc/mm/fault.c | 8
arch/powerpc/platforms/powermac/setup.c | 6
arch/ppc/Kconfig.debug | 36 -
arch/ppc/kernel/Makefile | 2
arch/ppc/kernel/kgdb.c | 354 +++++++++++
arch/ppc/kernel/kgdb_setjmp32.S | 41 +
arch/ppc/kernel/ppc-stub.c | 866 ---------------------------
arch/ppc/kernel/setup.c | 16
arch/ppc/mm/fault.c | 8
arch/ppc/platforms/4xx/bamboo.c | 23
arch/ppc/platforms/4xx/bubinga.c | 25
arch/ppc/platforms/4xx/ebony.c | 27
arch/ppc/platforms/4xx/luan.c | 13
arch/ppc/platforms/4xx/ocotea.c | 26
arch/ppc/platforms/4xx/taishan.c | 7
arch/ppc/platforms/4xx/xilinx_ml300.c | 5
arch/ppc/platforms/4xx/xilinx_ml403.c | 3
arch/ppc/platforms/4xx/yucca.c | 3
arch/ppc/platforms/83xx/mpc834x_sys.c | 5
arch/ppc/platforms/85xx/mpc8540_ads.c | 7
arch/ppc/platforms/85xx/mpc8560_ads.c | 1
arch/ppc/platforms/85xx/mpc85xx_cds_common.c | 7
arch/ppc/platforms/85xx/sbc8560.c | 38 -
arch/ppc/platforms/85xx/tqm85xx.c | 7
arch/ppc/platforms/chestnut.c | 7
arch/ppc/platforms/ev64260.c | 12
arch/ppc/platforms/hdpu.c | 19
arch/ppc/platforms/lopec.c | 3
arch/ppc/platforms/pplus.c | 5
arch/ppc/platforms/radstone_ppc7d.c | 12
arch/ppc/platforms/sandpoint.c | 5
arch/ppc/platforms/spruce.c | 24
arch/ppc/syslib/Makefile | 1
arch/ppc/syslib/gen550.h | 1
arch/ppc/syslib/gen550_kgdb.c | 83 --
arch/ppc/syslib/ibm44x_common.c | 3
arch/ppc/syslib/mv64x60.c | 62 +
arch/ppc/syslib/mv64x60_dbg.c | 52 -
arch/ppc/syslib/ppc4xx_setup.c | 1
arch/ppc/syslib/ppc83xx_setup.c | 24
arch/ppc/syslib/ppc85xx_setup.c | 26
drivers/serial/Makefile | 1
drivers/serial/cpm_uart/Makefile | 1
drivers/serial/cpm_uart/cpm_uart.h | 39 +
drivers/serial/cpm_uart/cpm_uart_core.c | 89 ++
drivers/serial/cpm_uart/cpm_uart_cpm1.c | 28
drivers/serial/cpm_uart/cpm_uart_cpm2.c | 4
drivers/serial/cpm_uart/cpm_uart_kgdb.c | 186 +++++
drivers/serial/mpsc_kgdb.c | 347 ++++++++++
include/asm-powerpc/kgdb.h | 93 +-
include/asm-ppc/kgdb.h | 59 -
include/asm-ppc/machdep.h | 2
include/asm-ppc/mv64x60.h | 2
include/asm-ppc/mv64x60_defs.h | 3
lib/Kconfig.kgdb | 51 +
62 files changed, 1957 insertions(+), 1412 deletions(-)
--- a/arch/powerpc/Kconfig.debug
+++ b/arch/powerpc/Kconfig.debug
@@ -41,52 +41,9 @@ config HCALL_STATS
This option will add a small amount of overhead to all hypervisor
calls.
-config DEBUGGER
- bool "Enable debugger hooks"
- depends on DEBUG_KERNEL
- help
- Include in-kernel hooks for kernel debuggers. Unless you are
- intending to debug the kernel, say N here.
-
-config KGDB
- bool "Include kgdb kernel debugger"
- depends on DEBUGGER && (BROKEN || PPC_GEN550 || 4xx)
- select DEBUG_INFO
- help
- Include in-kernel hooks for kgdb, the Linux kernel source level
- debugger. See <http://kgdb.sourceforge.net/> for more information.
- Unless you are intending to debug the kernel, say N here.
-
-choice
- prompt "Serial Port"
- depends on KGDB
- default KGDB_TTYS1
-
-config KGDB_TTYS0
- bool "ttyS0"
-
-config KGDB_TTYS1
- bool "ttyS1"
-
-config KGDB_TTYS2
- bool "ttyS2"
-
-config KGDB_TTYS3
- bool "ttyS3"
-
-endchoice
-
-config KGDB_CONSOLE
- bool "Enable serial console thru kgdb port"
- depends on KGDB && 8xx || CPM2
- help
- If you enable this, all serial console messages will be sent
- over the gdb stub.
- If unsure, say N.
-
config XMON
bool "Include xmon kernel debugger"
- depends on DEBUGGER
+ depends on DEBUG_KERNEL
help
Include in-kernel hooks for the xmon kernel monitor/debugger.
Unless you are intending to debug the kernel, say N here.
@@ -116,6 +73,11 @@ config XMON_DISASSEMBLY
to say Y here, unless you're building for a memory-constrained
system.
+config DEBUGGER
+ bool
+ depends on KGDB || XMON
+ default y
+
config IRQSTACKS
bool "Use separate kernel stacks when processing interrupts"
depends on PPC64
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -66,6 +66,12 @@ obj-$(CONFIG_SMP) += smp.o
obj-$(CONFIG_KPROBES) += kprobes.o
obj-$(CONFIG_PPC_UDBG_16550) += legacy_serial.o udbg_16550.o
+ifeq ($(CONFIG_PPC32),y)
+obj-$(CONFIG_KGDB) += kgdb.o kgdb_setjmp32.o
+else
+obj-$(CONFIG_KGDB) += kgdb.o kgdb_setjmp64.o
+endif
+
pci64-$(CONFIG_PPC64) += pci_dn.o isa-bridge.o
obj-$(CONFIG_PCI) += pci_$(CONFIG_WORD_SIZE).o $(pci64-y) \
pci-common.o
--- /dev/null
+++ b/arch/powerpc/kernel/kgdb.c
@@ -0,0 +1,394 @@
+/*
+ * arch/powerpc/kernel/kgdb.c
+ *
+ * PowerPC backend to the KGDB stub.
+ *
+ * Maintainer: Tom Rini <[email protected]>
+ *
+ * Copied from arch/ppc/kernel/kgdb.c, updated for ppc64
+ *
+ * 1998 (c) Michael AK Tesch ([email protected])
+ * Copyright (C) 2003 Timesys Corporation.
+ * Copyright (C) 2004-2006 MontaVista Software, Inc.
+ * PPC64 Mods (C) 2005 Frank Rowand ([email protected])
+ * PPC32 support restored by Vitaly Wool <[email protected]> and
+ * Sergei Shtylyov <[email protected]>
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program as licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/kgdb.h>
+#include <linux/smp.h>
+#include <linux/signal.h>
+#include <linux/ptrace.h>
+#include <asm/current.h>
+#include <asm/processor.h>
+#include <asm/machdep.h>
+
+/*
+ * This table contains the mapping between PowerPC hardware trap types, and
+ * signals, which are primarily what GDB understands. GDB and the kernel
+ * don't always agree on values, so we use constants taken from gdb-6.2.
+ */
+static struct hard_trap_info
+{
+ unsigned int tt; /* Trap type code for powerpc */
+ unsigned char signo; /* Signal that we map this trap into */
+} hard_trap_info[] = {
+ { 0x0100, 0x02 /* SIGINT */ }, /* system reset */
+ { 0x0200, 0x0b /* SIGSEGV */ }, /* machine check */
+ { 0x0300, 0x0b /* SIGSEGV */ }, /* data access */
+ { 0x0400, 0x0b /* SIGSEGV */ }, /* instruction access */
+ { 0x0500, 0x02 /* SIGINT */ }, /* external interrupt */
+ { 0x0600, 0x0a /* SIGBUS */ }, /* alignment */
+ { 0x0700, 0x05 /* SIGTRAP */ }, /* program check */
+ { 0x0800, 0x08 /* SIGFPE */ }, /* fp unavailable */
+ { 0x0900, 0x0e /* SIGALRM */ }, /* decrementer */
+ { 0x0c00, 0x14 /* SIGCHLD */ }, /* system call */
+#if defined(CONFIG_40x) || defined(CONFIG_BOOKE)
+ { 0x2002, 0x05 /* SIGTRAP */ }, /* debug */
+#if defined(CONFIG_FSL_BOOKE)
+ { 0x2010, 0x08 /* SIGFPE */ }, /* spe unavailable */
+ { 0x2020, 0x08 /* SIGFPE */ }, /* spe unavailable */
+ { 0x2030, 0x08 /* SIGFPE */ }, /* spe fp data */
+ { 0x2040, 0x08 /* SIGFPE */ }, /* spe fp data */
+ { 0x2050, 0x08 /* SIGFPE */ }, /* spe fp round */
+ { 0x2060, 0x0e /* SIGILL */ }, /* performace monitor */
+ { 0x2900, 0x08 /* SIGFPE */ }, /* apu unavailable */
+ { 0x3100, 0x0e /* SIGALRM */ }, /* fixed interval timer */
+ { 0x3200, 0x02 /* SIGINT */ }, /* watchdog */
+#else /* ! CONFIG_FSL_BOOKE */
+ { 0x1000, 0x0e /* SIGALRM */ }, /* prog interval timer */
+ { 0x1010, 0x0e /* SIGALRM */ }, /* fixed interval timer */
+ { 0x1020, 0x02 /* SIGINT */ }, /* watchdog */
+ { 0x2010, 0x08 /* SIGFPE */ }, /* fp unavailable */
+ { 0x2020, 0x08 /* SIGFPE */ }, /* ap unavailable */
+#endif
+#else /* ! (defined(CONFIG_40x) || defined(CONFIG_BOOKE)) */
+ { 0x0d00, 0x05 /* SIGTRAP */ }, /* single-step */
+#if defined(CONFIG_8xx)
+ { 0x1000, 0x04 /* SIGILL */ }, /* software emulation */
+#else /* ! CONFIG_8xx */
+ { 0x0f00, 0x04 /* SIGILL */ }, /* performance monitor */
+ { 0x0f20, 0x08 /* SIGFPE */ }, /* altivec unavailable */
+ { 0x1300, 0x05 /* SIGTRAP */ }, /* instruction address break */
+#if defined(CONFIG_PPC64)
+ { 0x1200, 0x05 /* SIGILL */ }, /* system error */
+ { 0x1500, 0x04 /* SIGILL */ }, /* soft patch */
+ { 0x1600, 0x04 /* SIGILL */ }, /* maintenance */
+ { 0x1700, 0x08 /* SIGFPE */ }, /* altivec assist */
+ { 0x1800, 0x04 /* SIGILL */ }, /* thermal */
+#else /* ! CONFIG_PPC64 */
+ { 0x1400, 0x02 /* SIGINT */ }, /* SMI */
+ { 0x1600, 0x08 /* SIGFPE */ }, /* altivec assist */
+ { 0x1700, 0x04 /* SIGILL */ }, /* TAU */
+ { 0x2000, 0x05 /* SIGTRAP */ }, /* run mode */
+#endif
+#endif
+#endif
+ { 0x0000, 0x00 } /* Must be last */
+};
+
+static int computeSignal(unsigned int tt)
+{
+ struct hard_trap_info *ht;
+
+ for (ht = hard_trap_info; ht->tt && ht->signo; ht++)
+ if (ht->tt == tt)
+ return ht->signo;
+
+ return SIGHUP; /* default for things we don't know about */
+}
+
+static int kgdb_call_nmi_hook(struct pt_regs *regs)
+{
+ kgdb_nmihook(smp_processor_id(), regs);
+ return 0;
+}
+
+#ifdef CONFIG_SMP
+void kgdb_roundup_cpus(unsigned long flags)
+{
+ smp_send_debugger_break(MSG_ALL_BUT_SELF);
+}
+#endif
+
+/* KGDB functions to use existing PowerPC64 hooks. */
+static int kgdb_debugger(struct pt_regs *regs)
+{
+ return kgdb_handle_exception(0, computeSignal(TRAP(regs)), 0, regs);
+}
+
+static int kgdb_breakpoint(struct pt_regs *regs)
+{
+ if (user_mode(regs))
+ return 0;
+
+ if (kgdb_handle_exception(0, SIGTRAP, 0, regs) != 0)
+ return 0;
+
+ if (*(u32 *) (regs->nip) == *(u32 *) (&arch_kgdb_ops.gdb_bpt_instr))
+ regs->nip += 4;
+
+ return 1;
+}
+
+static int kgdb_singlestep(struct pt_regs *regs)
+{
+ struct thread_info *thread_info, *exception_thread_info;
+
+ if (user_mode(regs))
+ return 0;
+
+ /*
+ * On Book E and perhaps other processsors, singlestep is handled on
+ * the critical exception stack. This causes current_thread_info()
+ * to fail, since it it locates the thread_info by masking off
+ * the low bits of the current stack pointer. We work around
+ * this issue by copying the thread_info from the kernel stack
+ * before calling kgdb_handle_exception, and copying it back
+ * afterwards. On most processors the copy is avoided since
+ * exception_thread_info == thread_info.
+ */
+ thread_info = (struct thread_info *)(regs->gpr[1] & ~(THREAD_SIZE-1));
+ exception_thread_info = current_thread_info();
+
+ if (thread_info != exception_thread_info)
+ memcpy(exception_thread_info, thread_info, sizeof *thread_info);
+
+ kgdb_handle_exception(0, SIGTRAP, 0, regs);
+
+ if (thread_info != exception_thread_info)
+ memcpy(thread_info, exception_thread_info, sizeof *thread_info);
+
+ return 1;
+}
+
+int kgdb_iabr_match(struct pt_regs *regs)
+{
+ if (user_mode(regs))
+ return 0;
+
+ if (kgdb_handle_exception(0, computeSignal(TRAP(regs)), 0, regs) != 0)
+ return 0;
+ return 1;
+}
+
+int kgdb_dabr_match(struct pt_regs *regs)
+{
+ if (user_mode(regs))
+ return 0;
+
+ if (kgdb_handle_exception(0, computeSignal(TRAP(regs)), 0, regs) != 0)
+ return 0;
+ return 1;
+}
+
+#define PACK64(ptr, src) do { *(ptr++) = (src); } while (0)
+
+#define PACK32(ptr, src) do { \
+ u32 *ptr32; \
+ ptr32 = (u32 *)ptr; \
+ *(ptr32++) = (src); \
+ ptr = (unsigned long *)ptr32; \
+ } while (0)
+
+
+void regs_to_gdb_regs(unsigned long *gdb_regs, struct pt_regs *regs)
+{
+ unsigned long *ptr = gdb_regs;
+ int reg;
+
+ memset(gdb_regs, 0, NUMREGBYTES);
+
+ for (reg = 0; reg < 32; reg++)
+ PACK64(ptr, regs->gpr[reg]);
+
+#ifdef CONFIG_FSL_BOOKE
+#ifdef CONFIG_SPE
+ for (reg = 0; reg < 32; reg++)
+ PACK64(ptr, current->thread.evr[reg]);
+#else
+ ptr += 32;
+#endif
+#else
+ /* fp registers not used by kernel, leave zero */
+ ptr += 32 * 8 / sizeof(long);
+#endif
+
+ PACK64(ptr, regs->nip);
+ PACK64(ptr, regs->msr);
+ PACK32(ptr, regs->ccr);
+ PACK64(ptr, regs->link);
+ PACK64(ptr, regs->ctr);
+ PACK32(ptr, regs->xer);
+
+ BUG_ON((unsigned long)ptr >
+ (unsigned long)(((void *)gdb_regs) + NUMREGBYTES));
+}
+
+void sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *p)
+{
+ struct pt_regs *regs = (struct pt_regs *)(p->thread.ksp +
+ STACK_FRAME_OVERHEAD);
+ unsigned long *ptr = gdb_regs;
+ int reg;
+
+ memset(gdb_regs, 0, NUMREGBYTES);
+
+ /* Regs GPR0-2 */
+ for (reg = 0; reg < 3; reg++)
+ PACK64(ptr, regs->gpr[reg]);
+
+ /* Regs GPR3-13 are caller saved, not in regs->gpr[] */
+ ptr += 11;
+
+ /* Regs GPR14-31 */
+ for (reg = 14; reg < 32; reg++)
+ PACK64(ptr, regs->gpr[reg]);
+
+#ifdef CONFIG_FSL_BOOKE
+#ifdef CONFIG_SPE
+ for (reg = 0; reg < 32; reg++)
+ PACK64(ptr, p->thread.evr[reg]);
+#else
+ ptr += 32;
+#endif
+#else
+ /* fp registers not used by kernel, leave zero */
+ ptr += 32 * 8 / sizeof(long);
+#endif
+
+ PACK64(ptr, regs->nip);
+ PACK64(ptr, regs->msr);
+ PACK32(ptr, regs->ccr);
+ PACK64(ptr, regs->link);
+ PACK64(ptr, regs->ctr);
+ PACK32(ptr, regs->xer);
+
+ BUG_ON((unsigned long)ptr >
+ (unsigned long)(((void *)gdb_regs) + NUMREGBYTES));
+}
+
+#define UNPACK64(dest, ptr) do { dest = *(ptr++); } while (0)
+
+#define UNPACK32(dest, ptr) do { \
+ u32 *ptr32; \
+ ptr32 = (u32 *)ptr; \
+ dest = *(ptr32++); \
+ ptr = (unsigned long *)ptr32; \
+ } while (0)
+
+void gdb_regs_to_regs(unsigned long *gdb_regs, struct pt_regs *regs)
+{
+ unsigned long *ptr = gdb_regs;
+ int reg;
+#ifdef CONFIG_SPE
+ union {
+ u32 v32[2];
+ u64 v64;
+ } acc;
+#endif
+
+ for (reg = 0; reg < 32; reg++)
+ UNPACK64(regs->gpr[reg], ptr);
+
+#ifdef CONFIG_FSL_BOOKE
+#ifdef CONFIG_SPE
+ for (reg = 0; reg < 32; reg++)
+ UNPACK64(current->thread.evr[reg], ptr);
+#else
+ ptr += 32;
+#endif
+#else
+ /* fp registers not used by kernel, leave zero */
+ ptr += 32 * 8 / sizeof(int);
+#endif
+
+ UNPACK64(regs->nip, ptr);
+ UNPACK64(regs->msr, ptr);
+ UNPACK32(regs->ccr, ptr);
+ UNPACK64(regs->link, ptr);
+ UNPACK64(regs->ctr, ptr);
+ UNPACK32(regs->xer, ptr);
+
+ BUG_ON((unsigned long)ptr >
+ (unsigned long)(((void *)gdb_regs) + NUMREGBYTES));
+}
+
+/*
+ * This function does PowerPC specific procesing for interfacing to gdb.
+ */
+int kgdb_arch_handle_exception(int vector, int signo, int err_code,
+ char *remcom_in_buffer, char *remcom_out_buffer,
+ struct pt_regs *linux_regs)
+{
+ char *ptr = &remcom_in_buffer[1];
+ unsigned long addr;
+
+ switch (remcom_in_buffer[0]) {
+ /*
+ * sAA..AA Step one instruction from AA..AA
+ * This will return an error to gdb ..
+ */
+ case 's':
+ case 'c':
+ /* handle the optional parameter */
+ if (kgdb_hex2long(&ptr, &addr))
+ linux_regs->nip = addr;
+
+ atomic_set(&cpu_doing_single_step, -1);
+ /* set the trace bit if we're stepping */
+ if (remcom_in_buffer[0] == 's') {
+#if defined(CONFIG_40x) || defined(CONFIG_BOOKE)
+ mtspr(SPRN_DBCR0,
+ mfspr(SPRN_DBCR0) | DBCR0_IC | DBCR0_IDM);
+ linux_regs->msr |= MSR_DE;
+#else
+ linux_regs->msr |= MSR_SE;
+#endif
+ debugger_step = 1;
+ if (kgdb_contthread)
+ atomic_set(&cpu_doing_single_step,
+ smp_processor_id());
+ }
+ return 0;
+ }
+
+ return -1;
+}
+
+/*
+ * Global data
+ */
+struct kgdb_arch arch_kgdb_ops = {
+ .gdb_bpt_instr = {0x7d, 0x82, 0x10, 0x08},
+};
+
+int kgdb_not_implemented(struct pt_regs *regs)
+{
+ return 0;
+}
+
+int kgdb_arch_init(void)
+{
+#ifdef CONFIG_XMON
+#error Both XMON and KGDB selected in .config. Unselect one of them.
+#endif
+
+ __debugger_ipi = kgdb_call_nmi_hook;
+ __debugger = kgdb_debugger;
+ __debugger_bpt = kgdb_breakpoint;
+ __debugger_sstep = kgdb_singlestep;
+ __debugger_iabr_match = kgdb_iabr_match;
+ __debugger_dabr_match = kgdb_dabr_match;
+ __debugger_fault_handler = kgdb_not_implemented;
+
+ return 0;
+}
+
+arch_initcall(kgdb_arch_init);
--- a/arch/powerpc/kernel/legacy_serial.c
+++ b/arch/powerpc/kernel/legacy_serial.c
@@ -11,6 +11,9 @@
#include <asm/udbg.h>
#include <asm/pci-bridge.h>
#include <asm/ppc-pci.h>
+#ifdef CONFIG_KGDB_8250
+#include <linux/kgdb.h>
+#endif
#undef DEBUG
@@ -488,6 +491,9 @@ static int __init serial_dev_init(void)
fixup_port_pio(i, np, port);
if ((port->iotype == UPIO_MEM) || (port->iotype == UPIO_TSI))
fixup_port_mmio(i, np, port);
+#ifdef CONFIG_KGDB_8250
+ kgdb8250_add_platform_port(i, port);
+#endif
}
DBG("Registering platform serial ports\n");
--- a/arch/powerpc/kernel/setup_32.c
+++ b/arch/powerpc/kernel/setup_32.c
@@ -45,10 +45,6 @@
#define DBG(fmt...)
-#if defined CONFIG_KGDB
-#include <asm/kgdb.h>
-#endif
-
extern void bootx_init(unsigned long r4, unsigned long phys);
#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
@@ -248,18 +244,6 @@ void __init setup_arch(char **cmdline_p)
xmon_setup();
-#if defined(CONFIG_KGDB)
- if (ppc_md.kgdb_map_scc)
- ppc_md.kgdb_map_scc();
- set_debug_traps();
- if (strstr(cmd_line, "gdb")) {
- if (ppc_md.progress)
- ppc_md.progress("setup_arch: kgdb breakpoint", 0x4000);
- printk("kgdb breakpoint activated\n");
- breakpoint();
- }
-#endif
-
/*
* Set cache line size based on type of cpu as a default.
* Systems with OF can look in the properties on the cpu node(s)
--- a/arch/powerpc/mm/fault.c
+++ b/arch/powerpc/mm/fault.c
@@ -29,6 +29,7 @@
#include <linux/module.h>
#include <linux/kprobes.h>
#include <linux/kdebug.h>
+#include <linux/kgdb.h>
#include <asm/page.h>
#include <asm/pgtable.h>
@@ -413,6 +414,13 @@ void bad_page_fault(struct pt_regs *regs
return;
}
+#ifdef CONFIG_KGDB
+ if (atomic_read(&debugger_active) && kgdb_may_fault)
+ /* Restore our previous state. */
+ kgdb_fault_longjmp(kgdb_fault_jmp_regs);
+ /* Not reached. */
+#endif
+
/* kernel has accessed a bad area */
switch (regs->trap) {
--- a/arch/powerpc/platforms/powermac/setup.c
+++ b/arch/powerpc/platforms/powermac/setup.c
@@ -98,8 +98,6 @@ extern struct machdep_calls pmac_md;
int sccdbg;
#endif
-extern void zs_kgdb_hook(int tty_num);
-
sys_ctrler_t sys_ctrler = SYS_CTRLER_UNKNOWN;
EXPORT_SYMBOL(sys_ctrler);
@@ -330,10 +328,6 @@ static void __init pmac_setup_arch(void)
l2cr_init();
#endif /* CONFIG_PPC32 */
-#ifdef CONFIG_KGDB
- zs_kgdb_hook(0);
-#endif
-
find_via_cuda();
find_via_pmu();
smu_init();
--- a/arch/ppc/Kconfig.debug
+++ b/arch/ppc/Kconfig.debug
@@ -2,42 +2,6 @@ menu "Kernel hacking"
source "lib/Kconfig.debug"
-config KGDB
- bool "Include kgdb kernel debugger"
- depends on DEBUG_KERNEL && (BROKEN || PPC_GEN550 || 4xx)
- select DEBUG_INFO
- help
- Include in-kernel hooks for kgdb, the Linux kernel source level
- debugger. See <http://kgdb.sourceforge.net/> for more information.
- Unless you are intending to debug the kernel, say N here.
-
-choice
- prompt "Serial Port"
- depends on KGDB
- default KGDB_TTYS1
-
-config KGDB_TTYS0
- bool "ttyS0"
-
-config KGDB_TTYS1
- bool "ttyS1"
-
-config KGDB_TTYS2
- bool "ttyS2"
-
-config KGDB_TTYS3
- bool "ttyS3"
-
-endchoice
-
-config KGDB_CONSOLE
- bool "Enable serial console thru kgdb port"
- depends on KGDB && 8xx || CPM2
- help
- If you enable this, all serial console messages will be sent
- over the gdb stub.
- If unsure, say N.
-
config XMON
bool "Include xmon kernel debugger"
depends on DEBUG_KERNEL
--- /dev/null
+++ b/arch/ppc/kernel/kgdb.c
@@ -0,0 +1,354 @@
+/*
+ * arch/ppc/kernel/kgdb.c
+ *
+ * PowerPC backend to the KGDB stub.
+ *
+ * Maintainer: Tom Rini <[email protected]>
+ *
+ * 1998 (c) Michael AK Tesch ([email protected])
+ * Copyright (C) 2003 Timesys Corporation.
+ * Copyright (C) 2004, 2006 MontaVista Software, Inc.
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program as licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/kgdb.h>
+#include <linux/smp.h>
+#include <linux/signal.h>
+#include <linux/ptrace.h>
+#include <asm/current.h>
+#include <asm/processor.h>
+#include <asm/machdep.h>
+
+/*
+ * This table contains the mapping between PowerPC hardware trap types, and
+ * signals, which are primarily what GDB understands. GDB and the kernel
+ * don't always agree on values, so we use constants taken from gdb-6.2.
+ */
+static struct hard_trap_info
+{
+ unsigned int tt; /* Trap type code for powerpc */
+ unsigned char signo; /* Signal that we map this trap into */
+} hard_trap_info[] = {
+ { 0x0100, 0x02 /* SIGINT */ }, /* system reset */
+ { 0x0200, 0x0b /* SIGSEGV */ }, /* machine check */
+ { 0x0300, 0x0b /* SIGSEGV */ }, /* data access */
+ { 0x0400, 0x0b /* SIGSEGV */ }, /* instruction access */
+ { 0x0500, 0x02 /* SIGINT */ }, /* external interrupt */
+ { 0x0600, 0x0a /* SIGBUS */ }, /* alignment */
+ { 0x0700, 0x05 /* SIGTRAP */ }, /* program check */
+ { 0x0800, 0x08 /* SIGFPE */ }, /* fp unavailable */
+ { 0x0900, 0x0e /* SIGALRM */ }, /* decrementer */
+ { 0x0c00, 0x14 /* SIGCHLD */ }, /* system call */
+#if defined(CONFIG_40x) || defined(CONFIG_BOOKE)
+ { 0x2002, 0x05 /* SIGTRAP */ }, /* debug */
+#if defined(CONFIG_FSL_BOOKE)
+ { 0x2010, 0x08 /* SIGFPE */ }, /* spe unavailable */
+ { 0x2020, 0x08 /* SIGFPE */ }, /* spe unavailable */
+ { 0x2030, 0x08 /* SIGFPE */ }, /* spe fp data */
+ { 0x2040, 0x08 /* SIGFPE */ }, /* spe fp data */
+ { 0x2050, 0x08 /* SIGFPE */ }, /* spe fp round */
+ { 0x2060, 0x0e /* SIGILL */ }, /* performace monitor */
+ { 0x2900, 0x08 /* SIGFPE */ }, /* apu unavailable */
+ { 0x3100, 0x0e /* SIGALRM */ }, /* fixed interval timer */
+ { 0x3200, 0x02 /* SIGINT */ }, /* watchdog */
+#else /* ! CONFIG_FSL_BOOKE */
+ { 0x1000, 0x0e /* SIGALRM */ }, /* prog interval timer */
+ { 0x1010, 0x0e /* SIGALRM */ }, /* fixed interval timer */
+ { 0x1020, 0x02 /* SIGINT */ }, /* watchdog */
+ { 0x2010, 0x08 /* SIGFPE */ }, /* fp unavailable */
+ { 0x2020, 0x08 /* SIGFPE */ }, /* ap unavailable */
+#endif
+#else /* ! (defined(CONFIG_40x) || defined(CONFIG_BOOKE)) */
+ { 0x0d00, 0x05 /* SIGTRAP */ }, /* single-step */
+#if defined(CONFIG_8xx)
+ { 0x1000, 0x04 /* SIGILL */ }, /* software emulation */
+#else /* ! CONFIG_8xx */
+ { 0x0f00, 0x04 /* SIGILL */ }, /* performance monitor */
+ { 0x0f20, 0x08 /* SIGFPE */ }, /* altivec unavailable */
+ { 0x1300, 0x05 /* SIGTRAP */ }, /* instruction address break */
+ { 0x1400, 0x02 /* SIGINT */ }, /* SMI */
+ { 0x1600, 0x08 /* SIGFPE */ }, /* altivec assist */
+ { 0x1700, 0x04 /* SIGILL */ }, /* TAU */
+ { 0x2000, 0x05 /* SIGTRAP */ }, /* run mode */
+#endif
+#endif
+ { 0x0000, 0x00 } /* Must be last */
+};
+
+static int computeSignal(unsigned int tt)
+{
+ struct hard_trap_info *ht;
+
+ for (ht = hard_trap_info; ht->tt && ht->signo; ht++)
+ if (ht->tt == tt)
+ return ht->signo;
+
+ return SIGHUP; /* default for things we don't know about */
+}
+
+/* KGDB functions to use existing PowerPC hooks. */
+static void kgdb_debugger(struct pt_regs *regs)
+{
+ kgdb_handle_exception(0, computeSignal(TRAP(regs)), 0, regs);
+}
+
+static int kgdb_breakpoint(struct pt_regs *regs)
+{
+ if (user_mode(regs))
+ return 0;
+
+ if (kgdb_handle_exception(0, SIGTRAP, 0, regs) != 0)
+ return 0;
+
+ if (*(u32 *) (regs->nip) == *(u32 *) (&arch_kgdb_ops.gdb_bpt_instr))
+ regs->nip += 4;
+
+ return 1;
+}
+
+static int kgdb_singlestep(struct pt_regs *regs)
+{
+ struct thread_info *thread_info, *exception_thread_info;
+
+ if (user_mode(regs))
+ return 0;
+ /*
+ * On Book E and perhaps other processsors, singlestep is handled on
+ * the critical exception stack. This causes current_thread_info()
+ * to fail, since it it locates the thread_info by masking off
+ * the low bits of the current stack pointer. We work around
+ * this issue by copying the thread_info from the kernel stack
+ * before calling kgdb_handle_exception, and copying it back
+ * afterwards. On most processors the copy is avoided since
+ * exception_thread_info == thread_info.
+ */
+ thread_info = (struct thread_info *)(regs->gpr[1] & ~(THREAD_SIZE-1));
+ exception_thread_info = current_thread_info();
+
+ if (thread_info != exception_thread_info)
+ memcpy(exception_thread_info, thread_info, sizeof *thread_info);
+
+ kgdb_handle_exception(0, SIGTRAP, 0, regs);
+
+ if (thread_info != exception_thread_info)
+ memcpy(thread_info, exception_thread_info, sizeof *thread_info);
+
+ return 1;
+}
+
+int kgdb_iabr_match(struct pt_regs *regs)
+{
+ if (user_mode(regs))
+ return 0;
+
+ if (kgdb_handle_exception(0, computeSignal(TRAP(regs)), 0, regs) != 0)
+ return 0;
+ return 1;
+}
+
+int kgdb_dabr_match(struct pt_regs *regs)
+{
+ if (user_mode(regs))
+ return 0;
+
+ if (kgdb_handle_exception(0, computeSignal(TRAP(regs)), 0, regs) != 0)
+ return 0;
+ return 1;
+}
+
+void regs_to_gdb_regs(unsigned long *gdb_regs, struct pt_regs *regs)
+{
+ unsigned long *ptr = gdb_regs;
+ int reg;
+
+ memset(gdb_regs, 0, MAXREG * 4);
+
+ for (reg = 0; reg < 32; reg++)
+ *(ptr++) = regs->gpr[reg];
+
+#ifdef CONFIG_FSL_BOOKE
+#ifdef CONFIG_SPE
+ for (reg = 0; reg < 32; reg++)
+ *(ptr++) = current->thread.evr[reg];
+#else
+ ptr += 32;
+#endif
+#else
+ ptr += 64;
+#endif
+
+ *(ptr++) = regs->nip;
+ *(ptr++) = regs->msr;
+ *(ptr++) = regs->ccr;
+ *(ptr++) = regs->link;
+ *(ptr++) = regs->ctr;
+ *(ptr++) = regs->xer;
+
+#ifdef CONFIG_SPE
+ /* u64 acc */
+ *(ptr++) = current->thread.acc >> 32;
+ *(ptr++) = current->thread.acc & 0xffffffff;
+ *(ptr++) = current->thread.spefscr;
+#endif
+}
+
+void sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *p)
+{
+ struct pt_regs *regs = (struct pt_regs *)(p->thread.ksp +
+ STACK_FRAME_OVERHEAD);
+ unsigned long *ptr = gdb_regs;
+ int reg;
+
+ memset(gdb_regs, 0, MAXREG * 4);
+
+ /* Regs GPR0-2 */
+ for (reg = 0; reg < 3; reg++)
+ *(ptr++) = regs->gpr[reg];
+
+ /* Regs GPR3-13 are not saved */
+ ptr += 11;
+
+ /* Regs GPR14-31 */
+ for (reg = 14; reg < 32; reg++)
+ *(ptr++) = regs->gpr[reg];
+
+#ifdef CONFIG_FSL_BOOKE
+#ifdef CONFIG_SPE
+ for (reg = 0; reg < 32; reg++)
+ *(ptr++) = p->thread.evr[reg];
+#else
+ ptr += 32;
+#endif
+#else
+ ptr += 64;
+#endif
+
+ *(ptr++) = regs->nip;
+ *(ptr++) = regs->msr;
+ *(ptr++) = regs->ccr;
+ *(ptr++) = regs->link;
+ *(ptr++) = regs->ctr;
+ *(ptr++) = regs->xer;
+
+#ifdef CONFIG_SPE
+ /* u64 acc */
+ *(ptr++) = p->thread.acc >> 32;
+ *(ptr++) = p->thread.acc & 0xffffffff;
+ *(ptr++) = p->thread.spefscr;
+#endif
+}
+
+void gdb_regs_to_regs(unsigned long *gdb_regs, struct pt_regs *regs)
+{
+ unsigned long *ptr = gdb_regs;
+ int reg;
+#ifdef CONFIG_SPE
+ union {
+ u32 v32[2];
+ u64 v64;
+ } acc;
+#endif
+
+ for (reg = 0; reg < 32; reg++)
+ regs->gpr[reg] = *(ptr++);
+
+#ifdef CONFIG_FSL_BOOKE
+#ifdef CONFIG_SPE
+ for (reg = 0; reg < 32; reg++)
+ current->thread.evr[reg] = *(ptr++);
+#else
+ ptr += 32;
+#endif
+#else
+ ptr += 64;
+#endif
+
+ regs->nip = *(ptr++);
+ regs->msr = *(ptr++);
+ regs->ccr = *(ptr++);
+ regs->link = *(ptr++);
+ regs->ctr = *(ptr++);
+ regs->xer = *(ptr++);
+
+#ifdef CONFIG_SPE
+ /* u64 acc */
+ acc.v32[0] = *(ptr++);
+ acc.v32[1] = *(ptr++);
+ current->thread.acc = acc.v64;
+ current->thread.spefscr = *(ptr++);
+#endif
+}
+
+#ifdef CONFIG_SMP
+void kgdb_roundup_cpus(unsigned long flags)
+{
+ smp_send_debugger_break(MSG_ALL_BUT_SELF);
+}
+#endif
+
+/*
+ * This function does PowerPC specific processing for interfacing to gdb.
+ */
+int kgdb_arch_handle_exception(int vector, int signo, int err_code,
+ char *remcom_in_buffer, char *remcom_out_buffer,
+ struct pt_regs *linux_regs)
+{
+ char *ptr = &remcom_in_buffer[1];
+ unsigned long addr;
+
+ switch (remcom_in_buffer[0]) {
+ /*
+ * sAA..AA Step one instruction from AA..AA
+ * This will return an error to gdb ..
+ */
+ case 's':
+ case 'c':
+ /* handle the optional parameter */
+ if (kgdb_hex2long (&ptr, &addr))
+ linux_regs->nip = addr;
+
+ atomic_set(&cpu_doing_single_step, -1);
+ /* set the trace bit if we're stepping */
+ if (remcom_in_buffer[0] == 's') {
+#if defined(CONFIG_40x) || defined(CONFIG_BOOKE)
+ mtspr(SPRN_DBCR0,
+ mfspr(SPRN_DBCR0) | DBCR0_IC | DBCR0_IDM);
+ linux_regs->msr |= MSR_DE;
+#else
+ linux_regs->msr |= MSR_SE;
+#endif
+ debugger_step = 1;
+ if (kgdb_contthread)
+ atomic_set(&cpu_doing_single_step,
+ smp_processor_id());
+ }
+ return 0;
+ }
+
+ return -1;
+}
+
+/*
+ * Global data
+ */
+struct kgdb_arch arch_kgdb_ops = {
+ .gdb_bpt_instr = {0x7d, 0x82, 0x10, 0x08},
+};
+
+int kgdb_arch_init(void)
+{
+ debugger = kgdb_debugger;
+ debugger_bpt = kgdb_breakpoint;
+ debugger_sstep = kgdb_singlestep;
+ debugger_iabr_match = kgdb_iabr_match;
+ debugger_dabr_match = kgdb_dabr_match;
+
+ return 0;
+}
+
+arch_initcall(kgdb_arch_init);
--- a/arch/ppc/kernel/ppc-stub.c
+++ /dev/null
@@ -1,866 +0,0 @@
-/*
- * ppc-stub.c: KGDB support for the Linux kernel.
- *
- * adapted from arch/sparc/kernel/sparc-stub.c for the PowerPC
- * some stuff borrowed from Paul Mackerras' xmon
- * Copyright (C) 1998 Michael AK Tesch ([email protected])
- *
- * Modifications to run under Linux
- * Copyright (C) 1995 David S. Miller ([email protected])
- *
- * This file originally came from the gdb sources, and the
- * copyright notices have been retained below.
- */
-
-/****************************************************************************
-
- THIS SOFTWARE IS NOT COPYRIGHTED
-
- HP offers the following for use in the public domain. HP makes no
- warranty with regard to the software or its performance and the
- user accepts the software "AS IS" with all faults.
-
- HP DISCLAIMS ANY WARRANTIES, EXPRESS OR IMPLIED, WITH REGARD
- TO THIS SOFTWARE INCLUDING BUT NOT LIMITED TO THE WARRANTIES
- OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
-
-****************************************************************************/
-
-/****************************************************************************
- * Header: remcom.c,v 1.34 91/03/09 12:29:49 glenne Exp $
- *
- * Module name: remcom.c $
- * Revision: 1.34 $
- * Date: 91/03/09 12:29:49 $
- * Contributor: Lake Stevens Instrument Division$
- *
- * Description: low level support for gdb debugger. $
- *
- * Considerations: only works on target hardware $
- *
- * Written by: Glenn Engel $
- * ModuleState: Experimental $
- *
- * NOTES: See Below $
- *
- * Modified for SPARC by Stu Grossman, Cygnus Support.
- *
- * This code has been extensively tested on the Fujitsu SPARClite demo board.
- *
- * To enable debugger support, two things need to happen. One, a
- * call to set_debug_traps() is necessary in order to allow any breakpoints
- * or error conditions to be properly intercepted and reported to gdb.
- * Two, a breakpoint needs to be generated to begin communication. This
- * is most easily accomplished by a call to breakpoint(). Breakpoint()
- * simulates a breakpoint by executing a trap #1.
- *
- *************
- *
- * The following gdb commands are supported:
- *
- * command function Return value
- *
- * g return the value of the CPU registers hex data or ENN
- * G set the value of the CPU registers OK or ENN
- * qOffsets Get section offsets. Reply is Text=xxx;Data=yyy;Bss=zzz
- *
- * mAA..AA,LLLL Read LLLL bytes at address AA..AA hex data or ENN
- * MAA..AA,LLLL: Write LLLL bytes at address AA.AA OK or ENN
- *
- * c Resume at current address SNN ( signal NN)
- * cAA..AA Continue at address AA..AA SNN
- *
- * s Step one instruction SNN
- * sAA..AA Step one instruction from AA..AA SNN
- *
- * k kill
- *
- * ? What was the last sigval ? SNN (signal NN)
- *
- * bBB..BB Set baud rate to BB..BB OK or BNN, then sets
- * baud rate
- *
- * All commands and responses are sent with a packet which includes a
- * checksum. A packet consists of
- *
- * $<packet info>#<checksum>.
- *
- * where
- * <packet info> :: <characters representing the command or response>
- * <checksum> :: <two hex digits computed as modulo 256 sum of <packetinfo>>
- *
- * When a packet is received, it is first acknowledged with either '+' or '-'.
- * '+' indicates a successful transfer. '-' indicates a failed transfer.
- *
- * Example:
- *
- * Host: Reply:
- * $m0,10#2a +$00010203040506070809101112131415#42
- *
- ****************************************************************************/
-
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/mm.h>
-#include <linux/smp.h>
-#include <linux/smp_lock.h>
-#include <linux/init.h>
-#include <linux/sysrq.h>
-
-#include <asm/cacheflush.h>
-#include <asm/system.h>
-#include <asm/signal.h>
-#include <asm/kgdb.h>
-#include <asm/pgtable.h>
-#include <asm/ptrace.h>
-
-void breakinst(void);
-
-/*
- * BUFMAX defines the maximum number of characters in inbound/outbound buffers
- * at least NUMREGBYTES*2 are needed for register packets
- */
-#define BUFMAX 2048
-static char remcomInBuffer[BUFMAX];
-static char remcomOutBuffer[BUFMAX];
-
-static int initialized;
-static int kgdb_active;
-static int kgdb_started;
-static u_int fault_jmp_buf[100];
-static int kdebug;
-
-
-static const char hexchars[]="0123456789abcdef";
-
-/* Place where we save old trap entries for restoration - sparc*/
-/* struct tt_entry kgdb_savettable[256]; */
-/* typedef void (*trapfunc_t)(void); */
-
-static void kgdb_fault_handler(struct pt_regs *regs);
-static int handle_exception (struct pt_regs *regs);
-
-#if 0
-/* Install an exception handler for kgdb */
-static void exceptionHandler(int tnum, unsigned int *tfunc)
-{
- /* We are dorking with a live trap table, all irqs off */
-}
-#endif
-
-int
-kgdb_setjmp(long *buf)
-{
- asm ("mflr 0; stw 0,0(%0);"
- "stw 1,4(%0); stw 2,8(%0);"
- "mfcr 0; stw 0,12(%0);"
- "stmw 13,16(%0)"
- : : "r" (buf));
- /* XXX should save fp regs as well */
- return 0;
-}
-void
-kgdb_longjmp(long *buf, int val)
-{
- if (val == 0)
- val = 1;
- asm ("lmw 13,16(%0);"
- "lwz 0,12(%0); mtcrf 0x38,0;"
- "lwz 0,0(%0); lwz 1,4(%0); lwz 2,8(%0);"
- "mtlr 0; mr 3,%1"
- : : "r" (buf), "r" (val));
-}
-/* Convert ch from a hex digit to an int */
-static int
-hex(unsigned char ch)
-{
- if (ch >= 'a' && ch <= 'f')
- return ch-'a'+10;
- if (ch >= '0' && ch <= '9')
- return ch-'0';
- if (ch >= 'A' && ch <= 'F')
- return ch-'A'+10;
- return -1;
-}
-
-/* Convert the memory pointed to by mem into hex, placing result in buf.
- * Return a pointer to the last char put in buf (null), in case of mem fault,
- * return 0.
- */
-static unsigned char *
-mem2hex(const char *mem, char *buf, int count)
-{
- unsigned char ch;
- unsigned short tmp_s;
- unsigned long tmp_l;
-
- if (kgdb_setjmp((long*)fault_jmp_buf) == 0) {
- debugger_fault_handler = kgdb_fault_handler;
-
- /* Accessing 16 bit and 32 bit objects in a single
- ** load instruction is required to avoid bad side
- ** effects for some IO registers.
- */
-
- if ((count == 2) && (((long)mem & 1) == 0)) {
- tmp_s = *(unsigned short *)mem;
- mem += 2;
- *buf++ = hexchars[(tmp_s >> 12) & 0xf];
- *buf++ = hexchars[(tmp_s >> 8) & 0xf];
- *buf++ = hexchars[(tmp_s >> 4) & 0xf];
- *buf++ = hexchars[tmp_s & 0xf];
-
- } else if ((count == 4) && (((long)mem & 3) == 0)) {
- tmp_l = *(unsigned int *)mem;
- mem += 4;
- *buf++ = hexchars[(tmp_l >> 28) & 0xf];
- *buf++ = hexchars[(tmp_l >> 24) & 0xf];
- *buf++ = hexchars[(tmp_l >> 20) & 0xf];
- *buf++ = hexchars[(tmp_l >> 16) & 0xf];
- *buf++ = hexchars[(tmp_l >> 12) & 0xf];
- *buf++ = hexchars[(tmp_l >> 8) & 0xf];
- *buf++ = hexchars[(tmp_l >> 4) & 0xf];
- *buf++ = hexchars[tmp_l & 0xf];
-
- } else {
- while (count-- > 0) {
- ch = *mem++;
- *buf++ = hexchars[ch >> 4];
- *buf++ = hexchars[ch & 0xf];
- }
- }
-
- } else {
- /* error condition */
- }
- debugger_fault_handler = NULL;
- *buf = 0;
- return buf;
-}
-
-/* convert the hex array pointed to by buf into binary to be placed in mem
- * return a pointer to the character AFTER the last byte written.
-*/
-static char *
-hex2mem(char *buf, char *mem, int count)
-{
- unsigned char ch;
- int i;
- char *orig_mem;
- unsigned short tmp_s;
- unsigned long tmp_l;
-
- orig_mem = mem;
-
- if (kgdb_setjmp((long*)fault_jmp_buf) == 0) {
- debugger_fault_handler = kgdb_fault_handler;
-
- /* Accessing 16 bit and 32 bit objects in a single
- ** store instruction is required to avoid bad side
- ** effects for some IO registers.
- */
-
- if ((count == 2) && (((long)mem & 1) == 0)) {
- tmp_s = hex(*buf++) << 12;
- tmp_s |= hex(*buf++) << 8;
- tmp_s |= hex(*buf++) << 4;
- tmp_s |= hex(*buf++);
-
- *(unsigned short *)mem = tmp_s;
- mem += 2;
-
- } else if ((count == 4) && (((long)mem & 3) == 0)) {
- tmp_l = hex(*buf++) << 28;
- tmp_l |= hex(*buf++) << 24;
- tmp_l |= hex(*buf++) << 20;
- tmp_l |= hex(*buf++) << 16;
- tmp_l |= hex(*buf++) << 12;
- tmp_l |= hex(*buf++) << 8;
- tmp_l |= hex(*buf++) << 4;
- tmp_l |= hex(*buf++);
-
- *(unsigned long *)mem = tmp_l;
- mem += 4;
-
- } else {
- for (i=0; i<count; i++) {
- ch = hex(*buf++) << 4;
- ch |= hex(*buf++);
- *mem++ = ch;
- }
- }
-
-
- /*
- ** Flush the data cache, invalidate the instruction cache.
- */
- flush_icache_range((int)orig_mem, (int)orig_mem + count - 1);
-
- } else {
- /* error condition */
- }
- debugger_fault_handler = NULL;
- return mem;
-}
-
-/*
- * While we find nice hex chars, build an int.
- * Return number of chars processed.
- */
-static int
-hexToInt(char **ptr, int *intValue)
-{
- int numChars = 0;
- int hexValue;
-
- *intValue = 0;
-
- if (kgdb_setjmp((long*)fault_jmp_buf) == 0) {
- debugger_fault_handler = kgdb_fault_handler;
- while (**ptr) {
- hexValue = hex(**ptr);
- if (hexValue < 0)
- break;
-
- *intValue = (*intValue << 4) | hexValue;
- numChars ++;
-
- (*ptr)++;
- }
- } else {
- /* error condition */
- }
- debugger_fault_handler = NULL;
-
- return (numChars);
-}
-
-/* scan for the sequence $<data>#<checksum> */
-static void
-getpacket(char *buffer)
-{
- unsigned char checksum;
- unsigned char xmitcsum;
- int i;
- int count;
- unsigned char ch;
-
- do {
- /* wait around for the start character, ignore all other
- * characters */
- while ((ch = (getDebugChar() & 0x7f)) != '$') ;
-
- checksum = 0;
- xmitcsum = -1;
-
- count = 0;
-
- /* now, read until a # or end of buffer is found */
- while (count < BUFMAX) {
- ch = getDebugChar() & 0x7f;
- if (ch == '#')
- break;
- checksum = checksum + ch;
- buffer[count] = ch;
- count = count + 1;
- }
-
- if (count >= BUFMAX)
- continue;
-
- buffer[count] = 0;
-
- if (ch == '#') {
- xmitcsum = hex(getDebugChar() & 0x7f) << 4;
- xmitcsum |= hex(getDebugChar() & 0x7f);
- if (checksum != xmitcsum)
- putDebugChar('-'); /* failed checksum */
- else {
- putDebugChar('+'); /* successful transfer */
- /* if a sequence char is present, reply the ID */
- if (buffer[2] == ':') {
- putDebugChar(buffer[0]);
- putDebugChar(buffer[1]);
- /* remove sequence chars from buffer */
- count = strlen(buffer);
- for (i=3; i <= count; i++)
- buffer[i-3] = buffer[i];
- }
- }
- }
- } while (checksum != xmitcsum);
-}
-
-/* send the packet in buffer. */
-static void putpacket(unsigned char *buffer)
-{
- unsigned char checksum;
- int count;
- unsigned char ch, recv;
-
- /* $<packet info>#<checksum>. */
- do {
- putDebugChar('$');
- checksum = 0;
- count = 0;
-
- while ((ch = buffer[count])) {
- putDebugChar(ch);
- checksum += ch;
- count += 1;
- }
-
- putDebugChar('#');
- putDebugChar(hexchars[checksum >> 4]);
- putDebugChar(hexchars[checksum & 0xf]);
- recv = getDebugChar();
- } while ((recv & 0x7f) != '+');
-}
-
-static void kgdb_flush_cache_all(void)
-{
- flush_instruction_cache();
-}
-
-/* Set up exception handlers for tracing and breakpoints
- * [could be called kgdb_init()]
- */
-void set_debug_traps(void)
-{
-#if 0
- unsigned char c;
-
- save_and_cli(flags);
-
- /* In case GDB is started before us, ack any packets (presumably
- * "$?#xx") sitting there.
- *
- * I've found this code causes more problems than it solves,
- * so that's why it's commented out. GDB seems to work fine
- * now starting either before or after the kernel -bwb
- */
-
- while((c = getDebugChar()) != '$');
- while((c = getDebugChar()) != '#');
- c = getDebugChar(); /* eat first csum byte */
- c = getDebugChar(); /* eat second csum byte */
- putDebugChar('+'); /* ack it */
-#endif
- debugger = kgdb;
- debugger_bpt = kgdb_bpt;
- debugger_sstep = kgdb_sstep;
- debugger_iabr_match = kgdb_iabr_match;
- debugger_dabr_match = kgdb_dabr_match;
-
- initialized = 1;
-}
-
-static void kgdb_fault_handler(struct pt_regs *regs)
-{
- kgdb_longjmp((long*)fault_jmp_buf, 1);
-}
-
-int kgdb_bpt(struct pt_regs *regs)
-{
- return handle_exception(regs);
-}
-
-int kgdb_sstep(struct pt_regs *regs)
-{
- return handle_exception(regs);
-}
-
-void kgdb(struct pt_regs *regs)
-{
- handle_exception(regs);
-}
-
-int kgdb_iabr_match(struct pt_regs *regs)
-{
- printk(KERN_ERR "kgdb doesn't support iabr, what?!?\n");
- return handle_exception(regs);
-}
-
-int kgdb_dabr_match(struct pt_regs *regs)
-{
- printk(KERN_ERR "kgdb doesn't support dabr, what?!?\n");
- return handle_exception(regs);
-}
-
-/* Convert the hardware trap type code to a unix signal number. */
-/*
- * This table contains the mapping between PowerPC hardware trap types, and
- * signals, which are primarily what GDB understands.
- */
-static struct hard_trap_info
-{
- unsigned int tt; /* Trap type code for powerpc */
- unsigned char signo; /* Signal that we map this trap into */
-} hard_trap_info[] = {
-#if defined(CONFIG_40x) || defined(CONFIG_BOOKE)
- { 0x100, SIGINT }, /* critical input interrupt */
- { 0x200, SIGSEGV }, /* machine check */
- { 0x300, SIGSEGV }, /* data storage */
- { 0x400, SIGBUS }, /* instruction storage */
- { 0x500, SIGINT }, /* interrupt */
- { 0x600, SIGBUS }, /* alignment */
- { 0x700, SIGILL }, /* program */
- { 0x800, SIGILL }, /* reserved */
- { 0x900, SIGILL }, /* reserved */
- { 0xa00, SIGILL }, /* reserved */
- { 0xb00, SIGILL }, /* reserved */
- { 0xc00, SIGCHLD }, /* syscall */
- { 0xd00, SIGILL }, /* reserved */
- { 0xe00, SIGILL }, /* reserved */
- { 0xf00, SIGILL }, /* reserved */
- /*
- ** 0x1000 PIT
- ** 0x1010 FIT
- ** 0x1020 watchdog
- ** 0x1100 data TLB miss
- ** 0x1200 instruction TLB miss
- */
- { 0x2002, SIGTRAP}, /* debug */
-#else
- { 0x200, SIGSEGV }, /* machine check */
- { 0x300, SIGSEGV }, /* address error (store) */
- { 0x400, SIGBUS }, /* instruction bus error */
- { 0x500, SIGINT }, /* interrupt */
- { 0x600, SIGBUS }, /* alingment */
- { 0x700, SIGTRAP }, /* breakpoint trap */
- { 0x800, SIGFPE }, /* fpu unavail */
- { 0x900, SIGALRM }, /* decrementer */
- { 0xa00, SIGILL }, /* reserved */
- { 0xb00, SIGILL }, /* reserved */
- { 0xc00, SIGCHLD }, /* syscall */
- { 0xd00, SIGTRAP }, /* single-step/watch */
- { 0xe00, SIGFPE }, /* fp assist */
-#endif
- { 0, 0} /* Must be last */
-
-};
-
-static int computeSignal(unsigned int tt)
-{
- struct hard_trap_info *ht;
-
- for (ht = hard_trap_info; ht->tt && ht->signo; ht++)
- if (ht->tt == tt)
- return ht->signo;
-
- return SIGHUP; /* default for things we don't know about */
-}
-
-#define PC_REGNUM 64
-#define SP_REGNUM 1
-
-/*
- * This function does all command processing for interfacing to gdb.
- */
-static int
-handle_exception (struct pt_regs *regs)
-{
- int sigval;
- int addr;
- int length;
- char *ptr;
- unsigned int msr;
-
- /* We don't handle user-mode breakpoints. */
- if (user_mode(regs))
- return 0;
-
- if (debugger_fault_handler) {
- debugger_fault_handler(regs);
- panic("kgdb longjump failed!\n");
- }
- if (kgdb_active) {
- printk(KERN_ERR "interrupt while in kgdb, returning\n");
- return 0;
- }
-
- kgdb_active = 1;
- kgdb_started = 1;
-
-#ifdef KGDB_DEBUG
- printk("kgdb: entering handle_exception; trap [0x%x]\n",
- (unsigned int)regs->trap);
-#endif
-
- kgdb_interruptible(0);
- lock_kernel();
- msr = mfmsr();
- mtmsr(msr & ~MSR_EE); /* disable interrupts */
-
- if (regs->nip == (unsigned long)breakinst) {
- /* Skip over breakpoint trap insn */
- regs->nip += 4;
- }
-
- /* reply to host that an exception has occurred */
- sigval = computeSignal(regs->trap);
- ptr = remcomOutBuffer;
-
- *ptr++ = 'T';
- *ptr++ = hexchars[sigval >> 4];
- *ptr++ = hexchars[sigval & 0xf];
- *ptr++ = hexchars[PC_REGNUM >> 4];
- *ptr++ = hexchars[PC_REGNUM & 0xf];
- *ptr++ = ':';
- ptr = mem2hex((char *)®s->nip, ptr, 4);
- *ptr++ = ';';
- *ptr++ = hexchars[SP_REGNUM >> 4];
- *ptr++ = hexchars[SP_REGNUM & 0xf];
- *ptr++ = ':';
- ptr = mem2hex(((char *)regs) + SP_REGNUM*4, ptr, 4);
- *ptr++ = ';';
- *ptr++ = 0;
-
- putpacket(remcomOutBuffer);
- if (kdebug)
- printk("remcomOutBuffer: %s\n", remcomOutBuffer);
-
- /* XXX We may want to add some features dealing with poking the
- * XXX page tables, ... (look at sparc-stub.c for more info)
- * XXX also required hacking to the gdb sources directly...
- */
-
- while (1) {
- remcomOutBuffer[0] = 0;
-
- getpacket(remcomInBuffer);
- switch (remcomInBuffer[0]) {
- case '?': /* report most recent signal */
- remcomOutBuffer[0] = 'S';
- remcomOutBuffer[1] = hexchars[sigval >> 4];
- remcomOutBuffer[2] = hexchars[sigval & 0xf];
- remcomOutBuffer[3] = 0;
- break;
-#if 0
- case 'q': /* this screws up gdb for some reason...*/
- {
- extern long _start, sdata, __bss_start;
-
- ptr = &remcomInBuffer[1];
- if (strncmp(ptr, "Offsets", 7) != 0)
- break;
-
- ptr = remcomOutBuffer;
- sprintf(ptr, "Text=%8.8x;Data=%8.8x;Bss=%8.8x",
- &_start, &sdata, &__bss_start);
- break;
- }
-#endif
- case 'd':
- /* toggle debug flag */
- kdebug ^= 1;
- break;
-
- case 'g': /* return the value of the CPU registers.
- * some of them are non-PowerPC names :(
- * they are stored in gdb like:
- * struct {
- * u32 gpr[32];
- * f64 fpr[32];
- * u32 pc, ps, cnd, lr; (ps=msr)
- * u32 cnt, xer, mq;
- * }
- */
- {
- int i;
- ptr = remcomOutBuffer;
- /* General Purpose Regs */
- ptr = mem2hex((char *)regs, ptr, 32 * 4);
- /* Floating Point Regs - FIXME */
- /*ptr = mem2hex((char *), ptr, 32 * 8);*/
- for(i=0; i<(32*8*2); i++) { /* 2chars/byte */
- ptr[i] = '0';
- }
- ptr += 32*8*2;
- /* pc, msr, cr, lr, ctr, xer, (mq is unused) */
- ptr = mem2hex((char *)®s->nip, ptr, 4);
- ptr = mem2hex((char *)®s->msr, ptr, 4);
- ptr = mem2hex((char *)®s->ccr, ptr, 4);
- ptr = mem2hex((char *)®s->link, ptr, 4);
- ptr = mem2hex((char *)®s->ctr, ptr, 4);
- ptr = mem2hex((char *)®s->xer, ptr, 4);
- }
- break;
-
- case 'G': /* set the value of the CPU registers */
- {
- ptr = &remcomInBuffer[1];
-
- /*
- * If the stack pointer has moved, you should pray.
- * (cause only god can help you).
- */
-
- /* General Purpose Regs */
- hex2mem(ptr, (char *)regs, 32 * 4);
-
- /* Floating Point Regs - FIXME?? */
- /*ptr = hex2mem(ptr, ??, 32 * 8);*/
- ptr += 32*8*2;
-
- /* pc, msr, cr, lr, ctr, xer, (mq is unused) */
- ptr = hex2mem(ptr, (char *)®s->nip, 4);
- ptr = hex2mem(ptr, (char *)®s->msr, 4);
- ptr = hex2mem(ptr, (char *)®s->ccr, 4);
- ptr = hex2mem(ptr, (char *)®s->link, 4);
- ptr = hex2mem(ptr, (char *)®s->ctr, 4);
- ptr = hex2mem(ptr, (char *)®s->xer, 4);
-
- strcpy(remcomOutBuffer,"OK");
- }
- break;
- case 'H':
- /* don't do anything, yet, just acknowledge */
- hexToInt(&ptr, &addr);
- strcpy(remcomOutBuffer,"OK");
- break;
-
- case 'm': /* mAA..AA,LLLL Read LLLL bytes at address AA..AA */
- /* Try to read %x,%x. */
-
- ptr = &remcomInBuffer[1];
-
- if (hexToInt(&ptr, &addr) && *ptr++ == ','
- && hexToInt(&ptr, &length)) {
- if (mem2hex((char *)addr, remcomOutBuffer,
- length))
- break;
- strcpy(remcomOutBuffer, "E03");
- } else
- strcpy(remcomOutBuffer, "E01");
- break;
-
- case 'M': /* MAA..AA,LLLL: Write LLLL bytes at address AA.AA return OK */
- /* Try to read '%x,%x:'. */
-
- ptr = &remcomInBuffer[1];
-
- if (hexToInt(&ptr, &addr) && *ptr++ == ','
- && hexToInt(&ptr, &length)
- && *ptr++ == ':') {
- if (hex2mem(ptr, (char *)addr, length))
- strcpy(remcomOutBuffer, "OK");
- else
- strcpy(remcomOutBuffer, "E03");
- flush_icache_range(addr, addr+length);
- } else
- strcpy(remcomOutBuffer, "E02");
- break;
-
-
- case 'k': /* kill the program, actually just continue */
- case 'c': /* cAA..AA Continue; address AA..AA optional */
- /* try to read optional parameter, pc unchanged if no parm */
-
- ptr = &remcomInBuffer[1];
- if (hexToInt(&ptr, &addr))
- regs->nip = addr;
-
-/* Need to flush the instruction cache here, as we may have deposited a
- * breakpoint, and the icache probably has no way of knowing that a data ref to
- * some location may have changed something that is in the instruction cache.
- */
- kgdb_flush_cache_all();
- mtmsr(msr);
-
- kgdb_interruptible(1);
- unlock_kernel();
- kgdb_active = 0;
- if (kdebug) {
- printk("remcomInBuffer: %s\n", remcomInBuffer);
- printk("remcomOutBuffer: %s\n", remcomOutBuffer);
- }
- return 1;
-
- case 's':
- kgdb_flush_cache_all();
-#if defined(CONFIG_40x) || defined(CONFIG_BOOKE)
- mtspr(SPRN_DBCR0, mfspr(SPRN_DBCR0) | DBCR0_IC);
- regs->msr |= MSR_DE;
-#else
- regs->msr |= MSR_SE;
-#endif
- unlock_kernel();
- kgdb_active = 0;
- if (kdebug) {
- printk("remcomInBuffer: %s\n", remcomInBuffer);
- printk("remcomOutBuffer: %s\n", remcomOutBuffer);
- }
- return 1;
-
- case 'r': /* Reset (if user process..exit ???)*/
- panic("kgdb reset.");
- break;
- } /* switch */
- if (remcomOutBuffer[0] && kdebug) {
- printk("remcomInBuffer: %s\n", remcomInBuffer);
- printk("remcomOutBuffer: %s\n", remcomOutBuffer);
- }
- /* reply to the request */
- putpacket(remcomOutBuffer);
- } /* while(1) */
-}
-
-/* This function will generate a breakpoint exception. It is used at the
- beginning of a program to sync up with a debugger and can be used
- otherwise as a quick means to stop program execution and "break" into
- the debugger. */
-
-void
-breakpoint(void)
-{
- if (!initialized) {
- printk("breakpoint() called b4 kgdb init\n");
- return;
- }
-
- asm(" .globl breakinst \n\
- breakinst: .long 0x7d821008");
-}
-
-#ifdef CONFIG_KGDB_CONSOLE
-/* Output string in GDB O-packet format if GDB has connected. If nothing
- output, returns 0 (caller must then handle output). */
-int
-kgdb_output_string (const char* s, unsigned int count)
-{
- char buffer[512];
-
- if (!kgdb_started)
- return 0;
-
- count = (count <= (sizeof(buffer) / 2 - 2))
- ? count : (sizeof(buffer) / 2 - 2);
-
- buffer[0] = 'O';
- mem2hex (s, &buffer[1], count);
- putpacket(buffer);
-
- return 1;
-}
-#endif
-
-static void sysrq_handle_gdb(int key, struct pt_regs *pt_regs,
- struct tty_struct *tty)
-{
- printk("Entering GDB stub\n");
- breakpoint();
-}
-static struct sysrq_key_op sysrq_gdb_op = {
- .handler = sysrq_handle_gdb,
- .help_msg = "Gdb",
- .action_msg = "GDB",
-};
-
-static int gdb_register_sysrq(void)
-{
- printk("Registering GDB sysrq handler\n");
- register_sysrq_key('g', &sysrq_gdb_op);
- return 0;
-}
-module_init(gdb_register_sysrq);
--- a/arch/ppc/kernel/setup.c
+++ b/arch/ppc/kernel/setup.c
@@ -47,10 +47,6 @@
#include <asm/ppc_sys.h>
#endif
-#if defined CONFIG_KGDB
-#include <asm/kgdb.h>
-#endif
-
extern void platform_init(unsigned long r3, unsigned long r4,
unsigned long r5, unsigned long r6, unsigned long r7);
extern void reloc_got2(unsigned long offset);
@@ -508,18 +504,6 @@ void __init setup_arch(char **cmdline_p)
#endif /* CONFIG_XMON */
if ( ppc_md.progress ) ppc_md.progress("setup_arch: enter", 0x3eab);
-#if defined(CONFIG_KGDB)
- if (ppc_md.kgdb_map_scc)
- ppc_md.kgdb_map_scc();
- set_debug_traps();
- if (strstr(cmd_line, "gdb")) {
- if (ppc_md.progress)
- ppc_md.progress("setup_arch: kgdb breakpoint", 0x4000);
- printk("kgdb breakpoint activated\n");
- breakpoint();
- }
-#endif
-
/*
* Set cache line size based on type of cpu as a default.
* Systems with OF can look in the properties on the cpu node(s)
--- a/arch/ppc/mm/fault.c
+++ b/arch/ppc/mm/fault.c
@@ -25,6 +25,7 @@
#include <linux/interrupt.h>
#include <linux/highmem.h>
#include <linux/module.h>
+#include <linux/kgdb.h>
#include <asm/page.h>
#include <asm/pgtable.h>
@@ -328,6 +329,13 @@ bad_page_fault(struct pt_regs *regs, uns
return;
}
+#ifdef CONFIG_KGDB
+ if (atomic_read(&debugger_active) && kgdb_may_fault)
+ /* Restore our previous state. */
+ kgdb_fault_longjmp(kgdb_fault_jmp_regs);
+ /* Not reached. */
+#endif
+
/* kernel has accessed a bad area */
#if defined(CONFIG_XMON) || defined(CONFIG_KGDB)
if (debugger_kernel_faults)
--- a/arch/ppc/platforms/4xx/bubinga.c
+++ b/arch/ppc/platforms/4xx/bubinga.c
@@ -4,7 +4,7 @@
* Author: SAW (IBM), derived from walnut.c.
* Maintained by MontaVista Software <[email protected]>
*
- * 2003 (c) MontaVista Softare Inc. This file is licensed under the
+ * 2003-2004 (c) MontaVista Softare Inc. This file is licensed under the
* terms of the GNU General Public License version 2. This program is
* licensed "as is" without any warranty of any kind, whether express
* or implied.
@@ -19,6 +19,7 @@
#include <linux/pci.h>
#include <linux/rtc.h>
#include <linux/tty.h>
+#include <linux/kgdb.h>
#include <linux/serial.h>
#include <linux/serial_core.h>
#include <linux/serial_8250.h>
@@ -31,7 +32,6 @@
#include <asm/time.h>
#include <asm/io.h>
#include <asm/todc.h>
-#include <asm/kgdb.h>
#include <asm/ocp.h>
#include <asm/ibm_ocp_pci.h>
@@ -101,17 +101,26 @@ bubinga_early_serial_map(void)
port.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST;
port.line = 0;
- if (early_serial_setup(&port) != 0) {
+#ifdef CONFIG_SERIAL_8250
+ if (early_serial_setup(&port) != 0)
printk("Early serial init of port 0 failed\n");
- }
+#endif
+
+#ifdef CONFIG_KGDB_8250
+ kgdb8250_add_port(0, &port);
+#endif
port.membase = (void*)ACTING_UART1_IO_BASE;
port.irq = ACTING_UART1_INT;
port.line = 1;
- if (early_serial_setup(&port) != 0) {
+#ifdef CONFIG_SERIAL_8250
+ if (early_serial_setup(&port) != 0)
printk("Early serial init of port 1 failed\n");
- }
+#endif
+#ifdef CONFIG_KGDB_8250
+ kgdb8250_add_port(1, &port);
+#endif
}
void __init
@@ -258,8 +267,4 @@ platform_init(unsigned long r3, unsigned
ppc_md.nvram_read_val = todc_direct_read_val;
ppc_md.nvram_write_val = todc_direct_write_val;
#endif
-#ifdef CONFIG_KGDB
- ppc_md.early_serial_map = bubinga_early_serial_map;
-#endif
}
-
--- a/arch/ppc/platforms/4xx/ebony.c
+++ b/arch/ppc/platforms/4xx/ebony.c
@@ -29,6 +29,7 @@
#include <linux/initrd.h>
#include <linux/seq_file.h>
#include <linux/root_dev.h>
+#include <linux/kgdb.h>
#include <linux/tty.h>
#include <linux/serial.h>
#include <linux/serial_core.h>
@@ -227,14 +228,20 @@ ebony_early_serial_map(void)
port.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST;
port.line = 0;
- if (early_serial_setup(&port) != 0) {
+#ifdef CONFIG_SERIAL_8250
+ if (early_serial_setup(&port) != 0)
printk("Early serial init of port 0 failed\n");
- }
+#endif
-#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
+#ifdef CONFIG_SERIAL_TEXT_DEBUG
/* Configure debug serial access */
gen550_init(0, &port);
+#endif
+#ifdef CONFIG_KGDB_8250
+ kgdb8250_add_port(0, &port);
+#endif
+#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB_8250)
/* Purge TLB entry added in head_44x.S for early serial access */
_tlbie(UART0_IO_BASE);
#endif
@@ -244,14 +251,18 @@ ebony_early_serial_map(void)
port.uartclk = clocks.uart1;
port.line = 1;
- if (early_serial_setup(&port) != 0) {
+#ifdef CONFIG_SERIAL_8250
+ if (early_serial_setup(&port) != 1)
printk("Early serial init of port 1 failed\n");
- }
+#endif
-#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
+#ifdef CONFIG_SERIAL_TEXT_DEBUG
/* Configure debug serial access */
gen550_init(1, &port);
#endif
+#ifdef CONFIG_KGDB_8250
+ kgdb8250_add_port(1, &port);
+#endif
}
static void __init
@@ -328,8 +339,4 @@ void __init platform_init(unsigned long
ppc_md.nvram_read_val = todc_direct_read_val;
ppc_md.nvram_write_val = todc_direct_write_val;
-#ifdef CONFIG_KGDB
- ppc_md.early_serial_map = ebony_early_serial_map;
-#endif
}
-
--- a/arch/ppc/platforms/4xx/ocotea.c
+++ b/arch/ppc/platforms/4xx/ocotea.c
@@ -28,6 +28,7 @@
#include <linux/seq_file.h>
#include <linux/root_dev.h>
#include <linux/tty.h>
+#include <linux/kgdb.h>
#include <linux/serial.h>
#include <linux/serial_core.h>
#include <linux/serial_8250.h>
@@ -250,14 +251,20 @@ ocotea_early_serial_map(void)
port.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST;
port.line = 0;
- if (early_serial_setup(&port) != 0) {
+#ifdef CONFIG_SERIAL_8250
+ if (early_serial_setup(&port) != 0)
printk("Early serial init of port 0 failed\n");
- }
+#endif
-#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
+#ifdef CONFIG_SERIAL_TEXT_DEBUG
/* Configure debug serial access */
gen550_init(0, &port);
+#endif
+#ifdef CONFIG_KGDB_8250
+ kgdb8250_add_port(0, &port);
+#endif
+#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB_8250)
/* Purge TLB entry added in head_44x.S for early serial access */
_tlbie(UART0_IO_BASE);
#endif
@@ -267,14 +274,18 @@ ocotea_early_serial_map(void)
port.uartclk = clocks.uart1;
port.line = 1;
- if (early_serial_setup(&port) != 0) {
+#ifdef CONFIG_SERIAL_8250
+ if (early_serial_setup(&port) != 1)
printk("Early serial init of port 1 failed\n");
- }
+#endif
-#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
+#ifdef CONFIG_SERIAL_TEXT_DEBUG
/* Configure debug serial access */
gen550_init(1, &port);
#endif
+#ifdef CONFIG_KGDB_8250
+ kgdb8250_add_port(1, &port);
+#endif
}
static void __init
@@ -344,8 +355,5 @@ void __init platform_init(unsigned long
ppc_md.nvram_read_val = todc_direct_read_val;
ppc_md.nvram_write_val = todc_direct_write_val;
-#ifdef CONFIG_KGDB
- ppc_md.early_serial_map = ocotea_early_serial_map;
-#endif
ppc_md.init = ocotea_init;
}
--- a/arch/ppc/platforms/4xx/xilinx_ml300.c
+++ b/arch/ppc/platforms/4xx/xilinx_ml300.c
@@ -16,6 +16,8 @@
#include <linux/serial_core.h>
#include <linux/serial_8250.h>
#include <linux/serialP.h>
+#include <linux/kgdb.h>
+
#include <asm/io.h>
#include <asm/machdep.h>
@@ -41,9 +43,6 @@
* ppc4xx_map_io arch/ppc/syslib/ppc4xx_setup.c
* start_kernel init/main.c
* setup_arch arch/ppc/kernel/setup.c
- * #if defined(CONFIG_KGDB)
- * *ppc_md.kgdb_map_scc() == gen550_kgdb_map_scc
- * #endif
* *ppc_md.setup_arch == ml300_setup_arch this file
* ppc4xx_setup_arch arch/ppc/syslib/ppc4xx_setup.c
* ppc4xx_find_bridges arch/ppc/syslib/ppc405_pci.c
--- a/arch/ppc/platforms/85xx/sbc8560.c
+++ b/arch/ppc/platforms/85xx/sbc8560.c
@@ -30,6 +30,7 @@
#include <linux/initrd.h>
#include <linux/module.h>
#include <linux/fsl_devices.h>
+#include <linux/kgdb.h>
#include <asm/system.h>
#include <asm/pgtable.h>
@@ -44,14 +45,13 @@
#include <asm/mpc85xx.h>
#include <asm/irq.h>
#include <asm/immap_85xx.h>
-#include <asm/kgdb.h>
#include <asm/ppc_sys.h>
#include <mm/mmu_decl.h>
#include <syslib/ppc85xx_common.h>
#include <syslib/ppc85xx_setup.h>
+#include <syslib/gen550.h>
-#ifdef CONFIG_SERIAL_8250
static void __init
sbc8560_early_serial_map(void)
{
@@ -67,12 +67,16 @@ sbc8560_early_serial_map(void)
uart_req.membase = ioremap(uart_req.mapbase, MPC85xx_UART0_SIZE);
uart_req.type = PORT_16650;
-#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
- gen550_init(0, &uart_req);
+#ifdef CONFIG_SERIAL_8250
+ if (early_serial_setup(&uart_req) != 0)
+ printk(KERN_ERR "Early serial init of port 0 failed\n");
+#endif
+#ifdef CONFIG_SERIAL_TEXT_DEBUG
+ gen550_init(0, &uart_req);
+#endif
+#ifdef CONFIG_KGDB_8250
+ kgdb8250_add_port(0, &uart_req);
#endif
-
- if (early_serial_setup(&uart_req) != 0)
- printk("Early serial init of port 0 failed\n");
/* Assume early_serial_setup() doesn't modify uart_req */
uart_req.line = 1;
@@ -80,14 +84,17 @@ sbc8560_early_serial_map(void)
uart_req.membase = ioremap(uart_req.mapbase, MPC85xx_UART1_SIZE);
uart_req.irq = MPC85xx_IRQ_EXT10;
-#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
- gen550_init(1, &uart_req);
+#ifdef CONFIG_SERIAL_8250
+ if (early_serial_setup(&uart_req) != 0)
+ printk(KERN_ERR "Early serial init of port 0 failed\n");
#endif
-
- if (early_serial_setup(&uart_req) != 0)
- printk("Early serial init of port 1 failed\n");
-}
+#ifdef CONFIG_SERIAL_TEXT_DEBUG
+ gen550_init(0, &uart_req);
+#endif
+#ifdef CONFIG_KGDB_8250
+ kgdb8250_add_port(0, &uart_req);
#endif
+}
/* ************************************************************************
*
@@ -116,9 +123,7 @@ sbc8560_setup_arch(void)
/* setup PCI host bridges */
mpc85xx_setup_hose();
#endif
-#ifdef CONFIG_SERIAL_8250
sbc8560_early_serial_map();
-#endif
#ifdef CONFIG_SERIAL_TEXT_DEBUG
/* Invalidate the entry we stole earlier the serial ports
* should be properly mapped */
@@ -225,9 +230,6 @@ platform_init(unsigned long r3, unsigned
#if defined(CONFIG_SERIAL_8250) && defined(CONFIG_SERIAL_TEXT_DEBUG)
ppc_md.progress = gen550_progress;
#endif /* CONFIG_SERIAL_8250 && CONFIG_SERIAL_TEXT_DEBUG */
-#if defined(CONFIG_SERIAL_8250) && defined(CONFIG_KGDB)
- ppc_md.early_serial_map = sbc8560_early_serial_map;
-#endif /* CONFIG_SERIAL_8250 && CONFIG_KGDB */
if (ppc_md.progress)
ppc_md.progress("sbc8560_init(): exit", 0);
--- a/arch/ppc/platforms/chestnut.c
+++ b/arch/ppc/platforms/chestnut.c
@@ -35,9 +35,9 @@
#include <asm/io.h>
#include <asm/hw_irq.h>
#include <asm/machdep.h>
-#include <asm/kgdb.h>
#include <asm/bootinfo.h>
#include <asm/mv64x60.h>
+#include <syslib/gen550.h>
#include <platforms/chestnut.h>
static void __iomem *sram_base; /* Virtual addr of Internal SRAM */
@@ -493,7 +493,7 @@ chestnut_power_off(void)
static void __init
chestnut_map_io(void)
{
-#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
+#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB_8250)
io_block_mapping(CHESTNUT_UART_BASE, CHESTNUT_UART_BASE, 0x100000,
_PAGE_IO);
#endif
@@ -567,9 +567,6 @@ platform_init(unsigned long r3, unsigned
#if defined(CONFIG_SERIAL_TEXT_DEBUG)
ppc_md.progress = gen550_progress;
#endif
-#if defined(CONFIG_KGDB)
- ppc_md.kgdb_map_scc = gen550_kgdb_map_scc;
-#endif
if (ppc_md.progress)
ppc_md.progress("chestnut_init(): exit", 0);
--- a/arch/ppc/platforms/pplus.c
+++ b/arch/ppc/platforms/pplus.c
@@ -35,9 +35,9 @@
#include <asm/hawk.h>
#include <asm/todc.h>
#include <asm/bootinfo.h>
-#include <asm/kgdb.h>
#include <asm/reg.h>
+#include <syslib/gen550.h>
#include "pplus.h"
#undef DUMP_DBATS
@@ -893,9 +893,6 @@ platform_init(unsigned long r3, unsigned
#ifdef CONFIG_SERIAL_TEXT_DEBUG
ppc_md.progress = gen550_progress;
#endif /* CONFIG_SERIAL_TEXT_DEBUG */
-#ifdef CONFIG_KGDB
- ppc_md.kgdb_map_scc = gen550_kgdb_map_scc;
-#endif
#ifdef CONFIG_SMP
smp_ops = &pplus_smp_ops;
#endif /* CONFIG_SMP */
--- a/arch/ppc/platforms/sandpoint.c
+++ b/arch/ppc/platforms/sandpoint.c
@@ -95,9 +95,9 @@
#include <asm/bootinfo.h>
#include <asm/mpc10x.h>
#include <asm/pci-bridge.h>
-#include <asm/kgdb.h>
#include <asm/ppc_sys.h>
+#include <syslib/gen550.h>
#include "sandpoint.h"
/* Set non-zero if an X2 Sandpoint detected. */
@@ -730,9 +730,6 @@ platform_init(unsigned long r3, unsigned
ppc_md.nvram_read_val = todc_mc146818_read_val;
ppc_md.nvram_write_val = todc_mc146818_write_val;
-#ifdef CONFIG_KGDB
- ppc_md.kgdb_map_scc = gen550_kgdb_map_scc;
-#endif
#ifdef CONFIG_SERIAL_TEXT_DEBUG
ppc_md.progress = gen550_progress;
#endif
--- a/arch/ppc/platforms/spruce.c
+++ b/arch/ppc/platforms/spruce.c
@@ -26,6 +26,7 @@
#include <linux/root_dev.h>
#include <linux/serial.h>
#include <linux/tty.h>
+#include <linux/kgdb.h>
#include <linux/serial_core.h>
#include <linux/serial_8250.h>
@@ -38,9 +39,9 @@
#include <asm/time.h>
#include <asm/todc.h>
#include <asm/bootinfo.h>
-#include <asm/kgdb.h>
#include <syslib/cpc700.h>
+#include <syslib/gen550.h>
#include "spruce.h"
@@ -179,26 +180,32 @@ spruce_early_serial_map(void)
serial_req.membase = (u_char *)UART0_IO_BASE;
serial_req.regshift = 0;
-#if defined(CONFIG_KGDB) || defined(CONFIG_SERIAL_TEXT_DEBUG)
- gen550_init(0, &serial_req);
-#endif
#ifdef CONFIG_SERIAL_8250
if (early_serial_setup(&serial_req) != 0)
printk("Early serial init of port 0 failed\n");
#endif
+#ifdef CONFIG_SERIAL_TEXT_DEBUG
+ gen550_init(0, &serial_req);
+#endif
+#ifdef CONFIG_KGDB_8250
+ kgdb8250_add_port(0, &port);
+#endif
/* Assume early_serial_setup() doesn't modify serial_req */
serial_req.line = 1;
serial_req.irq = UART1_INT;
serial_req.membase = (u_char *)UART1_IO_BASE;
-#if defined(CONFIG_KGDB) || defined(CONFIG_SERIAL_TEXT_DEBUG)
- gen550_init(1, &serial_req);
-#endif
#ifdef CONFIG_SERIAL_8250
if (early_serial_setup(&serial_req) != 0)
printk("Early serial init of port 1 failed\n");
#endif
+#ifdef CONFIG_SERIAL_TEXT_DEBUG
+ gen550_init(1, &serial_req);
+#endif
+#ifdef CONFIG_KGDB_8250
+ kgdb8250_add_port(1, &serial_req);
+#endif
}
TODC_ALLOC();
@@ -317,7 +324,4 @@ platform_init(unsigned long r3, unsigned
#ifdef CONFIG_SERIAL_TEXT_DEBUG
ppc_md.progress = gen550_progress;
#endif /* CONFIG_SERIAL_TEXT_DEBUG */
-#ifdef CONFIG_KGDB
- ppc_md.kgdb_map_scc = gen550_kgdb_map_scc;
-#endif
}
--- a/arch/ppc/syslib/Makefile
+++ b/arch/ppc/syslib/Makefile
@@ -78,7 +78,6 @@ obj-$(CONFIG_PCI_8260) += m82xx_pci.o p
obj-$(CONFIG_8260_PCI9) += m8260_pci_erratum9.o
obj-$(CONFIG_CPM2) += cpm2_common.o cpm2_pic.o
ifeq ($(CONFIG_PPC_GEN550),y)
-obj-$(CONFIG_KGDB) += gen550_kgdb.o gen550_dbg.o
obj-$(CONFIG_SERIAL_TEXT_DEBUG) += gen550_dbg.o
endif
ifeq ($(CONFIG_SERIAL_MPSC_CONSOLE),y)
--- a/arch/ppc/syslib/gen550.h
+++ b/arch/ppc/syslib/gen550.h
@@ -11,4 +11,3 @@
extern void gen550_progress(char *, unsigned short);
extern void gen550_init(int, struct uart_port *);
-extern void gen550_kgdb_map_scc(void);
--- a/arch/ppc/syslib/ibm44x_common.c
+++ b/arch/ppc/syslib/ibm44x_common.c
@@ -192,9 +192,6 @@ void __init ibm44x_platform_init(unsigne
#ifdef CONFIG_SERIAL_TEXT_DEBUG
ppc_md.progress = gen550_progress;
#endif /* CONFIG_SERIAL_TEXT_DEBUG */
-#ifdef CONFIG_KGDB
- ppc_md.kgdb_map_scc = gen550_kgdb_map_scc;
-#endif
/*
* The Abatron BDI JTAG debugger does not tolerate others
--- a/arch/ppc/syslib/mv64x60.c
+++ b/arch/ppc/syslib/mv64x60.c
@@ -242,6 +242,12 @@ static struct resource mv64x60_mpsc0_res
.end = MV64x60_IRQ_SDMA_0,
.flags = IORESOURCE_IRQ,
},
+ [4] = {
+ .name = "mpsc 0 irq",
+ .start = MV64x60_IRQ_MPSC_0,
+ .end = MV64x60_IRQ_MPSC_0,
+ .flags = IORESOURCE_IRQ,
+ },
};
static struct platform_device mpsc0_device = {
@@ -299,6 +305,12 @@ static struct resource mv64x60_mpsc1_res
.end = MV64360_IRQ_SDMA_1,
.flags = IORESOURCE_IRQ,
},
+ [4] = {
+ .name = "mpsc 1 irq",
+ .start = MV64360_IRQ_MPSC_1,
+ .end = MV64360_IRQ_MPSC_1,
+ .flags = IORESOURCE_IRQ,
+ },
};
static struct platform_device mpsc1_device = {
@@ -1462,12 +1474,48 @@ mv64x60_pd_fixup(struct mv64x60_handle *
static int __init
mv64x60_add_pds(void)
{
- return platform_add_devices(mv64x60_pd_devs,
- ARRAY_SIZE(mv64x60_pd_devs));
+ int i;
+ int ret = 0;
+
+ for (i = 0; i < ARRAY_SIZE(mv64x60_pd_devs); i++) {
+ if (mv64x60_pd_devs[i])
+ ret = platform_device_register(mv64x60_pd_devs[i]);
+
+ if (ret) {
+ while (--i >= 0)
+ platform_device_unregister(mv64x60_pd_devs[i]);
+ break;
+ }
+ }
+ return ret;
}
arch_initcall(mv64x60_add_pds);
/*
+ * mv64x60_early_get_pdev_data()
+ *
+ * Get the data associated with a platform device by name and number.
+ */
+struct platform_device *__init
+mv64x60_early_get_pdev_data(const char *name, int id, int remove)
+{
+ int i;
+ struct platform_device *pdev;
+
+ for (i = 0; i < ARRAY_SIZE(mv64x60_pd_devs); i++) {
+ pdev = mv64x60_pd_devs[i];
+ if (pdev &&
+ pdev->id == id &&
+ !strcmp(pdev->name, name)) {
+ if (remove)
+ mv64x60_pd_devs[i] = NULL;
+ return pdev;
+ }
+ }
+ return NULL;
+}
+
+/*
*****************************************************************************
*
* GT64260-Specific Routines
@@ -1794,12 +1842,16 @@ gt64260a_chip_specific_init(struct mv64x
mv64x60_mpsc0_pdata.cache_mgmt = 1;
mv64x60_mpsc1_pdata.mirror_regs = 1;
mv64x60_mpsc1_pdata.cache_mgmt = 1;
-
- if ((r = platform_get_resource(&mpsc1_device, IORESOURCE_IRQ, 0))
- != NULL) {
+ r = platform_get_resource(&mpsc1_device, IORESOURCE_IRQ, 0);
+ if (r != NULL) {
r->start = MV64x60_IRQ_SDMA_0;
r->end = MV64x60_IRQ_SDMA_0;
}
+ r = platform_get_resource(&mpsc1_device, IORESOURCE_IRQ, 1);
+ if (r != NULL) {
+ r->start = GT64260_IRQ_MPSC_1;
+ r->end = GT64260_IRQ_MPSC_1;
+ }
#endif
}
--- a/arch/ppc/syslib/mv64x60_dbg.c
+++ b/arch/ppc/syslib/mv64x60_dbg.c
@@ -34,7 +34,7 @@ static struct mv64x60_handle mv64x60_dbg
void
mv64x60_progress_init(u32 base)
{
- mv64x60_dbg_bh.v_base = base;
+ mv64x60_dbg_bh.v_base = (void *)base;
return;
}
@@ -69,53 +69,3 @@ mv64x60_mpsc_progress(char *s, unsigned
return;
}
#endif /* CONFIG_SERIAL_TEXT_DEBUG */
-
-
-#if defined(CONFIG_KGDB)
-
-#if defined(CONFIG_KGDB_TTYS0)
-#define KGDB_PORT 0
-#elif defined(CONFIG_KGDB_TTYS1)
-#define KGDB_PORT 1
-#else
-#error "Invalid kgdb_tty port"
-#endif
-
-void
-putDebugChar(unsigned char c)
-{
- mv64x60_polled_putc(KGDB_PORT, (char)c);
-}
-
-int
-getDebugChar(void)
-{
- unsigned char c;
-
- while (!mv64x60_polled_getc(KGDB_PORT, &c));
- return (int)c;
-}
-
-void
-putDebugString(char* str)
-{
- while (*str != '\0') {
- putDebugChar(*str);
- str++;
- }
- putDebugChar('\r');
- return;
-}
-
-void
-kgdb_interruptible(int enable)
-{
-}
-
-void
-kgdb_map_scc(void)
-{
- if (ppc_md.early_serial_map)
- ppc_md.early_serial_map();
-}
-#endif /* CONFIG_KGDB */
--- a/arch/ppc/syslib/ppc85xx_setup.c
+++ b/arch/ppc/syslib/ppc85xx_setup.c
@@ -19,16 +19,17 @@
#include <linux/tty.h> /* for linux/serial_core.h */
#include <linux/serial_core.h>
#include <linux/serial_8250.h>
+#include <linux/kgdb.h>
#include <asm/time.h>
#include <asm/mpc85xx.h>
#include <asm/immap_85xx.h>
#include <asm/mmu.h>
#include <asm/ppc_sys.h>
-#include <asm/kgdb.h>
#include <asm/machdep.h>
#include <syslib/ppc85xx_setup.h>
+#include <syslib/gen550.h>
extern void abort(void);
@@ -69,11 +70,11 @@ mpc85xx_calibrate_decr(void)
mtspr(SPRN_TCR, TCR_DIE);
}
-#ifdef CONFIG_SERIAL_8250
+#if defined(CONFIG_SERIAL_8250) || defined(CONFIG_KGDB_8250)
void __init
mpc85xx_early_serial_map(void)
{
-#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
+#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB_8250)
struct uart_port serial_req;
#endif
struct plat_serial8250_port *pdata;
@@ -85,27 +86,40 @@ mpc85xx_early_serial_map(void)
pdata[0].mapbase += binfo->bi_immr_base;
pdata[0].membase = ioremap(pdata[0].mapbase, MPC85xx_UART0_SIZE);
-#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
+#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB_8250)
memset(&serial_req, 0, sizeof (serial_req));
serial_req.iotype = UPIO_MEM;
serial_req.mapbase = pdata[0].mapbase;
serial_req.membase = pdata[0].membase;
serial_req.regshift = 0;
+ serial_req.irq = pdata[0].irq;
+ serial_req.flags = pdata[0].flags;
+ serial_req.uartclk = pdata[0].uartclk;
+#ifdef CONFIG_SERIAL_TEXT_DEBUG
gen550_init(0, &serial_req);
#endif
+#ifdef CONFIG_KGDB_8250
+ kgdb8250_add_port(0, &serial_req);
+#endif
+#endif
pdata[1].uartclk = binfo->bi_busfreq;
pdata[1].mapbase += binfo->bi_immr_base;
pdata[1].membase = ioremap(pdata[1].mapbase, MPC85xx_UART0_SIZE);
-#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
+#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB_8250)
/* Assume gen550_init() doesn't modify serial_req */
serial_req.mapbase = pdata[1].mapbase;
serial_req.membase = pdata[1].membase;
+#ifdef CONFIG_SERIAL_TEXT_DEBUG
gen550_init(1, &serial_req);
#endif
+#ifdef CONFIG_KGDB_8250
+ kgdb8250_add_port(1, &serial_req);
+#endif
+#endif
}
#endif
@@ -363,5 +377,3 @@ mpc85xx_setup_hose(void)
return;
}
#endif /* CONFIG_PCI */
-
-
--- a/drivers/serial/Makefile
+++ b/drivers/serial/Makefile
@@ -51,6 +51,7 @@ obj-$(CONFIG_SERIAL_IMX) += imx.o
obj-$(CONFIG_SERIAL_MPC52xx) += mpc52xx_uart.o
obj-$(CONFIG_SERIAL_ICOM) += icom.o
obj-$(CONFIG_SERIAL_M32R_SIO) += m32r_sio.o
+obj-$(CONFIG_KGDB_MPSC) += mpsc_kgdb.o
obj-$(CONFIG_SERIAL_MPSC) += mpsc.o
obj-$(CONFIG_SERIAL_SB1250_DUART) += sb1250-duart.o
obj-$(CONFIG_ETRAX_SERIAL) += crisv10.o
--- a/drivers/serial/cpm_uart/Makefile
+++ b/drivers/serial/cpm_uart/Makefile
@@ -7,5 +7,6 @@ obj-$(CONFIG_SERIAL_CPM) += cpm_uart.o
# Select the correct platform objects.
cpm_uart-objs-$(CONFIG_CPM2) += cpm_uart_cpm2.o
cpm_uart-objs-$(CONFIG_8xx) += cpm_uart_cpm1.o
+cpm_uart-objs-$(CONFIG_KGDB_CPM_UART) += cpm_uart_kgdb.o
cpm_uart-objs := cpm_uart_core.o $(cpm_uart-objs-y)
--- a/drivers/serial/cpm_uart/cpm_uart.h
+++ b/drivers/serial/cpm_uart/cpm_uart.h
@@ -50,6 +50,41 @@
#define SCC_WAIT_CLOSING 100
+#ifdef CONFIG_KGDB_CPM_UART
+
+/* Speed of the debug UART. */
+#if CONFIG_KGDB_BAUDRATE == 9600
+#define KGDB_BAUD B9600
+#elif CONFIG_KGDB_BAUDRATE == 19200
+#define KGDB_BAUD B19200
+#elif CONFIG_KGDB_BAUDRATE == 38400
+#define KGDB_BAUD B38400
+#elif CONFIG_KGDB_BAUDRATE == 57600
+#define KGDB_BAUD B57600
+#elif CONFIG_KGDB_BAUDRATE == 115200
+#define KGDB_BAUD B115200 /* Start with this if not given */
+#else
+#error Unsupported baud rate
+#endif
+
+#if defined(CONFIG_KGDB_CPM_UART_SCC1)
+#define KGDB_PINFO_INDEX UART_SCC1
+#elif defined(CONFIG_KGDB_CPM_UART_SCC2)
+#define KGDB_PINFO_INDEX UART_SCC2
+#elif defined(CONFIG_KGDB_CPM_UART_SCC3)
+#define KGDB_PINFO_INDEX UART_SCC3
+#elif defined(CONFIG_KGDB_CPM_UART_SCC4)
+#define KGDB_PINFO_INDEX UART_SCC4
+#elif defined(CONFIG_KGDB_CPM_UART_SMC1)
+#define KGDB_PINFO_INDEX UART_SMC1
+#elif defined(CONFIG_KGDB_CPM_UART_SMC2)
+#define KGDB_PINFO_INDEX UART_SMC2
+#else
+#error The port for KGDB is undefined
+#endif
+
+#endif /* CONFIG_KGDB_CPM_UART */
+
struct uart_cpm_port {
struct uart_port port;
u16 rx_nrfifos;
@@ -90,6 +125,9 @@ extern int cpm_uart_port_map[UART_NR];
extern int cpm_uart_nr;
extern struct uart_cpm_port cpm_uart_ports[UART_NR];
+void cpm_uart_early_write(int index, const char *s, u_int count);
+int cpm_uart_early_setup(int index, int early);
+
/* these are located in their respective files */
void cpm_line_cr_cmd(struct uart_cpm_port *port, int cmd);
int cpm_uart_init_portdesc(void);
@@ -138,5 +176,4 @@ static inline void *cpm2cpu_addr(unsigne
return NULL;
}
-
#endif /* CPM_UART_H */
--- a/drivers/serial/cpm_uart/cpm_uart_core.c
+++ b/drivers/serial/cpm_uart/cpm_uart_core.c
@@ -1160,26 +1160,17 @@ int cpm_uart_drv_get_platform_data(struc
}
#endif
-#ifdef CONFIG_SERIAL_CPM_CONSOLE
-/*
- * Print a string to the serial port trying not to disturb
- * any possible real use of the port...
- *
- * Note that this is called with interrupts already disabled
- */
-static void cpm_uart_console_write(struct console *co, const char *s,
+void cpm_uart_early_write(int index, const char *s,
u_int count)
{
-#ifdef CONFIG_PPC_CPM_NEW_BINDING
- struct uart_cpm_port *pinfo = &cpm_uart_ports[co->index];
-#else
- struct uart_cpm_port *pinfo =
- &cpm_uart_ports[cpm_uart_port_map[co->index]];
-#endif
+ struct uart_cpm_port *pinfo;
unsigned int i;
cbd_t __iomem *bdp, *bdbase;
unsigned char *cp;
+ BUG_ON(index > UART_NR);
+ pinfo = &cpm_uart_ports[index];
+
/* Get the address of the host memory buffer.
*/
bdp = pinfo->tx_cur;
@@ -1242,13 +1233,8 @@ static void cpm_uart_console_write(struc
pinfo->tx_cur = bdp;
}
-
-static int __init cpm_uart_console_setup(struct console *co, char *options)
+int cpm_uart_early_setup(int index, int early)
{
- int baud = 38400;
- int bits = 8;
- int parity = 'n';
- int flow = 'n';
int ret;
struct uart_cpm_port *pinfo;
struct uart_port *port;
@@ -1288,7 +1274,7 @@ static int __init cpm_uart_console_setup
#else
struct fs_uart_platform_info *pdata;
- struct platform_device* pdev = early_uart_get_pdev(co->index);
+ struct platform_device *pdev = early_uart_get_pdev(index);
if (!pdev) {
pr_info("cpm_uart: console: compat mode\n");
@@ -1296,8 +1282,9 @@ static int __init cpm_uart_console_setup
cpm_uart_init_portdesc();
}
+ BUG_ON(index > UART_NR);
port =
- (struct uart_port *)&cpm_uart_ports[cpm_uart_port_map[co->index]];
+ (struct uart_port *)&cpm_uart_ports[index];
pinfo = (struct uart_cpm_port *)port;
if (!pdev) {
if (pinfo->set_lineif)
@@ -1334,8 +1321,7 @@ static int __init cpm_uart_console_setup
clrbits16(&pinfo->sccp->scc_sccm, UART_SCCM_TX | UART_SCCM_RX);
clrbits32(&pinfo->sccp->scc_gsmrl, SCC_GSMRL_ENR | SCC_GSMRL_ENT);
}
-
- ret = cpm_uart_allocbuf(pinfo, 1);
+ ret = cpm_uart_allocbuf(pinfo, early);
if (ret)
return ret;
@@ -1347,6 +1333,49 @@ static int __init cpm_uart_console_setup
else
cpm_uart_init_scc(pinfo);
+ return 0;
+}
+
+#ifdef CONFIG_SERIAL_CPM_CONSOLE
+/*
+ * Print a string to the serial port trying not to disturb
+ * any possible real use of the port...
+ *
+ * Note that this is called with interrupts already disabled
+ */
+
+static void cpm_uart_console_write(struct console *co, const char *s,
+ u_int count)
+{
+ cpm_uart_early_write(cpm_uart_port_map[co->index], s, count);
+}
+
+/*
+ * Setup console. Be careful is called early !
+ */
+static int __init cpm_uart_console_setup(struct console *co, char *options)
+{
+ struct uart_port *port;
+ struct uart_cpm_port *pinfo;
+ int baud = 115200;
+ int bits = 8;
+ int parity = 'n';
+ int flow = 'n';
+ int ret;
+
+#ifdef CONFIG_KGDB_CPM_UART
+ /* We are not interested in ports yet utilized by kgdb */
+ if (co->index == KGDB_PINFO_INDEX)
+ return 0;
+#endif
+
+ port =
+ (struct uart_port *)&cpm_uart_ports[cpm_uart_port_map[co->index]];
+ pinfo = (struct uart_cpm_port *)port;
+
+ ret = cpm_uart_early_setup(cpm_uart_port_map[co->index], 1);
+ if (ret)
+ return ret;
uart_set_options(port, co, baud, parity, bits, flow);
cpm_line_cr_cmd(pinfo, CPM_CR_RESTART_TX);
@@ -1472,6 +1501,12 @@ static int cpm_uart_drv_probe(struct dev
pdata = pdev->dev.platform_data;
+#ifdef CONFIG_KGDB_CPM_UART
+ /* We are not interested in ports yet utilized by kgdb */
+ if (cpm_uart_id2nr(fs_uart_get_id(pdata)) == KGDB_PINFO_INDEX)
+ return ret;
+#endif
+
if ((ret = cpm_uart_drv_get_platform_data(pdev, 0)))
return ret;
@@ -1569,6 +1604,12 @@ static int cpm_uart_init(void) {
for (i = 0; i < cpm_uart_nr; i++) {
int con = cpm_uart_port_map[i];
+
+#ifdef CONFIG_KGDB_CPM_UART
+ /* We are not interested in ports yet utilized by kgdb */
+ if (con == KGDB_PINFO_INDEX)
+ continue;
+#endif
cpm_uart_ports[con].port.line = i;
cpm_uart_ports[con].port.flags = UPF_BOOT_AUTOCONF;
if (cpm_uart_ports[con].set_lineif)
--- a/drivers/serial/cpm_uart/cpm_uart_cpm1.c
+++ b/drivers/serial/cpm_uart/cpm_uart_cpm1.c
@@ -64,6 +64,7 @@ void cpm_line_cr_cmd(struct uart_cpm_por
ushort val;
int line = port - cpm_uart_ports;
volatile cpm8xx_t *cp = cpmp;
+ unsigned *bcsr_io;
switch (line) {
case UART_SMC1:
@@ -106,12 +107,35 @@ void scc1_lineif(struct uart_cpm_port *p
{
/* XXX SCC1: insert port configuration here */
pinfo->brg = 1;
+
+#if defined(CONFIG_MPC885ADS) || defined(CONFIG_MPC86XADS)
+ bcsr_io = ioremap(BCSR1, sizeof(unsigned long));
+
+ if (bcsr_io == NULL) {
+ printk(KERN_CRIT "Could not remap BCSR\n");
+ return;
+ }
+ out_be32(bcsr_io, in_be32(bcsr_io) & ~BCSR1_RS232EN_1);
+ iounmap(bcsr_io);
+#endif
}
void scc2_lineif(struct uart_cpm_port *pinfo)
{
/* XXX SCC2: insert port configuration here */
pinfo->brg = 2;
+ unsigned *bcsr_io;
+
+#if defined(CONFIG_MPC885ADS) || defined(CONFIG_MPC86XADS)
+ bcsr_io = ioremap(BCSR1, sizeof(unsigned long));
+
+ if (bcsr_io == NULL) {
+ printk(KERN_CRIT "Could not remap BCSR\n");
+ return;
+ }
+ out_be32(bcsr_io, in_be32(bcsr_io) & ~BCSR1_RS232EN_2);
+ iounmap(bcsr_io);
+#endif
}
void scc3_lineif(struct uart_cpm_port *pinfo)
@@ -202,6 +226,10 @@ int cpm_uart_init_portdesc(void)
{
pr_debug("CPM uart[-]:init portdesc\n");
+ /* Check if we have called this yet. This may happen if early kgdb
+ breakpoint is on */
+ if (cpm_uart_nr)
+ return 0;
cpm_uart_nr = 0;
#ifdef CONFIG_SERIAL_CPM_SMC1
cpm_uart_ports[UART_SMC1].smcp = &cpmp->cp_smc[0];
--- a/drivers/serial/cpm_uart/cpm_uart_cpm2.c
+++ b/drivers/serial/cpm_uart/cpm_uart_cpm2.c
@@ -304,6 +304,10 @@ int cpm_uart_init_portdesc(void)
#endif
pr_debug("CPM uart[-]:init portdesc\n");
+ /* Check if we have called this yet. This may happen if early kgdb
+ breakpoint is on */
+ if (cpm_uart_nr)
+ return 0;
cpm_uart_nr = 0;
#ifdef CONFIG_SERIAL_CPM_SMC1
cpm_uart_ports[UART_SMC1].smcp = (smc_t *) cpm2_map(im_smc[0]);
--- /dev/null
+++ b/drivers/serial/cpm_uart/cpm_uart_kgdb.c
@@ -0,0 +1,186 @@
+/*
+ * drivers/serial/cpm_uart/cpm_uart_kgdb.c
+ *
+ * CPM UART interface for kgdb.
+ *
+ * Author: Vitaly Bordug <[email protected]>
+ *
+ * Used some bits from drivers/serial/kgdb_8250.c as a template
+ *
+ * 2005-2007 (c) MontaVista Software, Inc. This file is licensed under
+ * the terms of the GNU General Public License version 2. This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+
+#include <linux/kgdb.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/tty.h>
+#include <linux/serial.h>
+#include <linux/serial_core.h>
+#include <linux/serial_reg.h>
+#include <linux/io.h>
+#include <linux/serial.h>
+#include <asm/serial.h> /* For BASE_BAUD and SERIAL_PORT_DFNS */
+
+#include "cpm_uart.h"
+
+#define GDB_BUF_SIZE 512 /* power of 2, please */
+
+
+static char kgdb_buf[GDB_BUF_SIZE], *kgdbp;
+static int kgdb_chars;
+
+/* Forward declarations. */
+
+/*
+ * Receive character from the serial port. This only works well
+ * before the port is initialize for real use.
+ */
+static int kgdb_wait_key(char *obuf)
+{
+ struct uart_cpm_port *pinfo;
+ u_char c, *cp;
+ volatile cbd_t *bdp;
+ int i;
+
+ pinfo = &cpm_uart_ports[KGDB_PINFO_INDEX];
+
+ /* Get the address of the host memory buffer.
+ */
+ bdp = pinfo->rx_cur;
+ while (bdp->cbd_sc & BD_SC_EMPTY);
+
+ /* If the buffer address is in the CPM DPRAM, don't
+ * convert it.
+ */
+ cp = cpm2cpu_addr(bdp->cbd_bufaddr, pinfo);
+
+ if (obuf) {
+ c = bdp->cbd_datlen;
+ i = c;
+ while (i-- > 0)
+ *obuf++ = *cp++;
+ } else
+ c = *cp;
+ bdp->cbd_sc |= BD_SC_EMPTY;
+
+ if (bdp->cbd_sc & BD_SC_WRAP)
+ bdp = pinfo->rx_bd_base;
+ else
+ bdp++;
+ pinfo->rx_cur = (cbd_t *)bdp;
+
+ return (int)c;
+}
+
+
+/*
+ * Wait until the interface can accept a char, then write it.
+ */
+static void kgdb_put_debug_char(u8 chr)
+{
+ static char ch[2];
+
+ ch[0] = (char)chr;
+ cpm_uart_early_write(KGDB_PINFO_INDEX, ch, 1);
+}
+
+
+/*
+ * Get a char if available, return -1 if nothing available.
+ * Empty the receive buffer first, then look at the interface hardware.
+ */
+static int kgdb_get_debug_char(void)
+{
+ if (kgdb_chars <= 0) {
+ kgdb_chars = kgdb_wait_key(kgdb_buf);
+ kgdbp = kgdb_buf;
+ }
+ kgdb_chars--;
+
+ return (*kgdbp++);
+}
+
+static void termios_set_options(int index,
+ int baud, int parity, int bits, int flow)
+{
+ struct ktermios termios;
+ struct uart_port *port;
+ struct uart_cpm_port *pinfo;
+
+ BUG_ON(index > UART_NR);
+
+ port = (struct uart_port *)&cpm_uart_ports[index];
+ pinfo = (struct uart_cpm_port *)port;
+
+ /*
+ * Ensure that the serial console lock is initialised
+ * early.
+ */
+ spin_lock_init(&port->lock);
+
+ memset(&termios, 0, sizeof(struct termios));
+
+ termios.c_cflag = CREAD | HUPCL | CLOCAL;
+
+ termios.c_cflag |= baud;
+
+ if (bits == 7)
+ termios.c_cflag |= CS7;
+ else
+ termios.c_cflag |= CS8;
+
+ switch (parity) {
+ case 'o': case 'O':
+ termios.c_cflag |= PARODD;
+ /*fall through*/
+ case 'e': case 'E':
+ termios.c_cflag |= PARENB;
+ break;
+ }
+
+ if (flow == 'r')
+ termios.c_cflag |= CRTSCTS;
+
+ port->ops->set_termios(port, &termios, NULL);
+}
+
+/*
+ * Returns:
+ * 0 on success, 1 on failure.
+ */
+static int kgdb_init(void)
+{
+ struct uart_port *port;
+ struct uart_cpm_port *pinfo;
+ int use_bootmem = 0; /* use dma by default */
+
+ if (!cpm_uart_nr) {
+ use_bootmem = 1;
+ cpm_uart_init_portdesc();
+ }
+ port = (struct uart_port *)&cpm_uart_ports[KGDB_PINFO_INDEX];
+ pinfo = (struct uart_cpm_port *)port;
+
+ if (cpm_uart_early_setup(KGDB_PINFO_INDEX, use_bootmem))
+ return 1;
+
+ termios_set_options(KGDB_PINFO_INDEX, KGDB_BAUD, 'n', 8, 'n');
+ if (IS_SMC(pinfo))
+ pinfo->smcp->smc_smcm |= SMCM_TX;
+ else
+ pinfo->sccp->scc_sccm |= UART_SCCM_TX;
+
+ return 0;
+}
+
+
+struct kgdb_io kgdb_io_ops = {
+ .read_char = kgdb_get_debug_char,
+ .write_char = kgdb_put_debug_char,
+ .init = kgdb_init,
+};
+
--- /dev/null
+++ b/drivers/serial/mpsc_kgdb.c
@@ -0,0 +1,347 @@
+/*
+ * drivers/serial/mpsc_kgdb.c
+ *
+ * KGDB driver for the Marvell MultiProtocol Serial Controller (MPCS)
+ *
+ * Based on the polled boot loader driver by Ajit Prem ([email protected])
+ *
+ * Author: Randy Vinson <[email protected]>
+ *
+ * Copyright (C) 2005-2006 MontaVista Software, Inc.
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/kgdb.h>
+#include <linux/mv643xx.h>
+#include <linux/device.h>
+#include <linux/serial.h>
+#include <linux/io.h>
+#include <linux/delay.h>
+#include <asm/mv64x60.h>
+
+/* Main MPSC Configuration Register Offsets */
+#define MPSC_MMCRL 0x0000
+#define MPSC_MMCRH 0x0004
+#define MPSC_MPCR 0x0008
+#define MPSC_CHR_1 0x000c
+#define MPSC_CHR_2 0x0010
+#define MPSC_CHR_3 0x0014
+#define MPSC_CHR_4 0x0018
+#define MPSC_CHR_5 0x001c
+#define MPSC_CHR_6 0x0020
+#define MPSC_CHR_7 0x0024
+#define MPSC_CHR_8 0x0028
+#define MPSC_CHR_9 0x002c
+#define MPSC_CHR_10 0x0030
+#define MPSC_CHR_11 0x0034
+
+#define MPSC_MPCR_FRZ (1 << 9)
+#define MPSC_MPCR_CL_5 0
+#define MPSC_MPCR_CL_6 1
+#define MPSC_MPCR_CL_7 2
+#define MPSC_MPCR_CL_8 3
+#define MPSC_MPCR_SBL_1 0
+#define MPSC_MPCR_SBL_2 1
+
+#define MPSC_CHR_2_TEV (1<<1)
+#define MPSC_CHR_2_TA (1<<7)
+#define MPSC_CHR_2_TTCS (1<<9)
+#define MPSC_CHR_2_REV (1<<17)
+#define MPSC_CHR_2_RA (1<<23)
+#define MPSC_CHR_2_CRD (1<<25)
+#define MPSC_CHR_2_EH (1<<31)
+#define MPSC_CHR_2_PAR_ODD 0
+#define MPSC_CHR_2_PAR_SPACE 1
+#define MPSC_CHR_2_PAR_EVEN 2
+#define MPSC_CHR_2_PAR_MARK 3
+
+/* MPSC Signal Routing */
+#define MPSC_MRR 0x0000
+#define MPSC_RCRR 0x0004
+#define MPSC_TCRR 0x0008
+
+/* MPSC Interrupt registers (offset from MV64x60_SDMA_INTR_OFFSET) */
+#define MPSC_INTR_CAUSE 0x0004
+#define MPSC_INTR_MASK 0x0084
+#define MPSC_INTR_CAUSE_RCC (1<<6)
+
+/* Baud Rate Generator Interface Registers */
+#define BRG_BCR 0x0000
+#define BRG_BTR 0x0004
+
+/* Speed of the UART. */
+static int kgdbmpsc_baud = CONFIG_KGDB_BAUDRATE;
+
+/* Index of the UART, matches ttyMX naming. */
+static int kgdbmpsc_ttyMM = CONFIG_KGDB_PORT_NUM;
+
+#define MPSC_INTR_REG_SELECT(x) ((x) + (8 * kgdbmpsc_ttyMM))
+
+static int kgdbmpsc_init(void);
+
+static struct platform_device mpsc_dev, shared_dev;
+
+static void __iomem *mpsc_base;
+static void __iomem *brg_base;
+static void __iomem *routing_base;
+static void __iomem *sdma_base;
+
+static unsigned int mpsc_irq;
+
+static void kgdb_write_debug_char(u8 c)
+{
+ u32 data;
+
+ data = readl(mpsc_base + MPSC_MPCR);
+ writeb(c, mpsc_base + MPSC_CHR_1);
+ mb(); /* sync serial */
+ data = readl(mpsc_base + MPSC_CHR_2);
+ data |= MPSC_CHR_2_TTCS;
+ writel(data, mpsc_base + MPSC_CHR_2);
+ mb(); /* sync serial */
+
+ while (readl(mpsc_base + MPSC_CHR_2) & MPSC_CHR_2_TTCS) ;
+}
+
+static int kgdb_get_debug_char(void)
+{
+ unsigned char c;
+
+ while (!(readl(sdma_base + MPSC_INTR_REG_SELECT(MPSC_INTR_CAUSE)) &
+ MPSC_INTR_CAUSE_RCC)) ;
+
+ c = readb(mpsc_base + MPSC_CHR_10 + (1 << 1));
+ mb(); /* sync serial */
+ writeb(c, mpsc_base + MPSC_CHR_10 + (1 << 1));
+ mb(); /* sync serial */
+ writel(~MPSC_INTR_CAUSE_RCC, sdma_base +
+ MPSC_INTR_REG_SELECT(MPSC_INTR_CAUSE));
+ return (c);
+}
+
+/*
+ * This is the receiver interrupt routine for the GDB stub.
+ * All that we need to do is verify that the interrupt happened on the
+ * line we're in charge of. If this is true, schedule a breakpoint and
+ * return.
+ */
+static irqreturn_t kgdbmpsc_interrupt(int irq, void *dev_id)
+{
+ if (irq != mpsc_irq)
+ return IRQ_NONE;
+ /*
+ * If there is some other CPU in KGDB then this is a
+ * spurious interrupt. so return without even checking a byte
+ */
+ if (atomic_read(&debugger_active))
+ return IRQ_NONE;
+
+ if (readl(sdma_base + MPSC_INTR_REG_SELECT(MPSC_INTR_CAUSE)) &
+ MPSC_INTR_CAUSE_RCC)
+ breakpoint();
+
+ return IRQ_HANDLED;
+}
+
+static int __init kgdbmpsc_init(void)
+{
+ struct mpsc_pdata *pdata;
+ u32 cdv;
+
+ if (!brg_base || !mpsc_base || !routing_base || !sdma_base)
+ return -1;
+
+ /* Set MPSC Routing to enable both ports */
+ writel(0x0, routing_base + MPSC_MRR);
+
+ /* MPSC 0/1 Rx & Tx get clocks BRG0/1 */
+ writel(0x00000100, routing_base + MPSC_RCRR);
+ writel(0x00000100, routing_base + MPSC_TCRR);
+
+ /* Disable all MPSC interrupts and clear any pending interrupts */
+ writel(0, sdma_base + MPSC_INTR_REG_SELECT(MPSC_INTR_MASK));
+ writel(0, sdma_base + MPSC_INTR_REG_SELECT(MPSC_INTR_CAUSE));
+
+ pdata = (struct mpsc_pdata *)mpsc_dev.dev.platform_data;
+
+ /* cdv = (clock/(2*16*baud rate)) for 16X mode. */
+ cdv = ((pdata->brg_clk_freq / (32 * kgdbmpsc_baud)) - 1);
+ writel((pdata->brg_clk_src << 18) | (1 << 16) | cdv,
+ brg_base + BRG_BCR);
+
+ /* Put MPSC into UART mode, no null modem, 16x clock mode */
+ writel(0x000004c4, mpsc_base + MPSC_MMCRL);
+ writel(0x04400400, mpsc_base + MPSC_MMCRH);
+
+ writel(0, mpsc_base + MPSC_CHR_1);
+ writel(0, mpsc_base + MPSC_CHR_9);
+ writel(0, mpsc_base + MPSC_CHR_10);
+ writel(4, mpsc_base + MPSC_CHR_3);
+ writel(0x20000000, mpsc_base + MPSC_CHR_4);
+ writel(0x9000, mpsc_base + MPSC_CHR_5);
+ writel(0, mpsc_base + MPSC_CHR_6);
+ writel(0, mpsc_base + MPSC_CHR_7);
+ writel(0, mpsc_base + MPSC_CHR_8);
+
+ /* 8 data bits, 1 stop bit */
+ writel((3 << 12), mpsc_base + MPSC_MPCR);
+
+ /* Enter "hunt" mode */
+ writel((1 << 31), mpsc_base + MPSC_CHR_2);
+
+ udelay(100);
+ return 0;
+}
+
+static void __iomem *__init
+kgdbmpsc_map_resource(struct platform_device *pd, int type, int num)
+{
+ void __iomem *base = NULL;
+ struct resource *r;
+
+ r = platform_get_resource(pd, IORESOURCE_MEM, num);
+ if (r)
+ base = ioremap(r->start, r->end - r->start + 1);
+ return base;
+}
+
+static void __iomem *__init
+kgdbmpsc_unmap_resource(struct platform_device *pd, int type, int num,
+ void __iomem *base)
+{
+ if (base)
+ iounmap(base);
+ return NULL;
+}
+
+static void __init
+kgdbmpsc_reserve_resource(struct platform_device *pd, int type, int num)
+{
+ struct resource *r;
+
+ r = platform_get_resource(pd, IORESOURCE_MEM, num);
+ if (r)
+ request_mem_region(r->start, r->end - r->start + 1, "kgdb");
+}
+
+static int __init kgdbmpsc_local_init(void)
+{
+ if (!mpsc_dev.num_resources || !shared_dev.num_resources)
+ return 1; /* failure */
+
+ mpsc_base = kgdbmpsc_map_resource(&mpsc_dev, IORESOURCE_MEM,
+ MPSC_BASE_ORDER);
+ brg_base = kgdbmpsc_map_resource(&mpsc_dev, IORESOURCE_MEM,
+ MPSC_BRG_BASE_ORDER);
+
+ /* get the platform data for the shared registers and get them mapped */
+ routing_base = kgdbmpsc_map_resource(&shared_dev,
+ IORESOURCE_MEM,
+ MPSC_ROUTING_BASE_ORDER);
+ sdma_base =
+ kgdbmpsc_map_resource(&shared_dev, IORESOURCE_MEM,
+ MPSC_SDMA_INTR_BASE_ORDER);
+
+ mpsc_irq = platform_get_irq(&mpsc_dev, 1);
+
+ if (mpsc_base && brg_base && routing_base && sdma_base)
+ return 0; /* success */
+
+ return 1; /* failure */
+}
+
+static void __init kgdbmpsc_local_exit(void)
+{
+ if (sdma_base)
+ sdma_base = kgdbmpsc_unmap_resource(&shared_dev, IORESOURCE_MEM,
+ MPSC_SDMA_INTR_BASE_ORDER,
+ sdma_base);
+ if (routing_base)
+ routing_base = kgdbmpsc_unmap_resource(&shared_dev,
+ IORESOURCE_MEM,
+ MPSC_ROUTING_BASE_ORDER,
+ routing_base);
+ if (brg_base)
+ brg_base = kgdbmpsc_unmap_resource(&mpsc_dev, IORESOURCE_MEM,
+ MPSC_BRG_BASE_ORDER,
+ brg_base);
+ if (mpsc_base)
+ mpsc_base = kgdbmpsc_unmap_resource(&mpsc_dev, IORESOURCE_MEM,
+ MPSC_BASE_ORDER, mpsc_base);
+}
+
+static void __init kgdbmpsc_update_pdata(struct platform_device *pdev)
+{
+
+ snprintf(pdev->dev.bus_id, BUS_ID_SIZE, "%s.%u", pdev->name, pdev->id);
+}
+
+static int __init kgdbmpsc_pdev_init(void)
+{
+ struct platform_device *pdev;
+
+ /* get the platform data for the specified port. */
+ pdev = mv64x60_early_get_pdev_data(MPSC_CTLR_NAME, kgdbmpsc_ttyMM, 1);
+ if (pdev) {
+ memcpy(&mpsc_dev, pdev, sizeof(struct platform_device));
+ if (platform_notify) {
+ kgdbmpsc_update_pdata(&mpsc_dev);
+ platform_notify(&mpsc_dev.dev);
+ }
+
+ /* get the platform data for the shared registers. */
+ pdev = mv64x60_early_get_pdev_data(MPSC_SHARED_NAME, 0, 0);
+ if (pdev) {
+ memcpy(&shared_dev, pdev,
+ sizeof(struct platform_device));
+ if (platform_notify) {
+ kgdbmpsc_update_pdata(&shared_dev);
+ platform_notify(&shared_dev.dev);
+ }
+ }
+ }
+ return 0;
+}
+
+postcore_initcall(kgdbmpsc_pdev_init);
+
+static int __init kgdbmpsc_init_io(void)
+{
+
+ kgdbmpsc_pdev_init();
+
+ if (kgdbmpsc_local_init()) {
+ kgdbmpsc_local_exit();
+ return -1;
+ }
+
+ if (kgdbmpsc_init() == -1)
+ return -1;
+ return 0;
+}
+
+static void __init kgdbmpsc_hookup_irq(void)
+{
+ unsigned int msk;
+ if (!request_irq(mpsc_irq, kgdbmpsc_interrupt, 0, "kgdb mpsc", NULL)) {
+ /* Enable interrupt */
+ msk = readl(sdma_base + MPSC_INTR_REG_SELECT(MPSC_INTR_MASK));
+ msk |= MPSC_INTR_CAUSE_RCC;
+ writel(msk, sdma_base + MPSC_INTR_REG_SELECT(MPSC_INTR_MASK));
+
+ kgdbmpsc_reserve_resource(&mpsc_dev, IORESOURCE_MEM,
+ MPSC_BASE_ORDER);
+ kgdbmpsc_reserve_resource(&mpsc_dev, IORESOURCE_MEM,
+ MPSC_BRG_BASE_ORDER);
+ }
+}
+
+struct kgdb_io kgdb_io_ops = {
+ .read_char = kgdb_get_debug_char,
+ .write_char = kgdb_write_debug_char,
+ .init = kgdbmpsc_init_io,
+ .late_init = kgdbmpsc_hookup_irq,
+};
--- a/include/asm-powerpc/kgdb.h
+++ b/include/asm-powerpc/kgdb.h
@@ -1,57 +1,64 @@
/*
- * kgdb.h: Defines and declarations for serial line source level
- * remote debugging of the Linux kernel using gdb.
+ * include/asm-powerpc/kgdb.h
*
+ * The PowerPC (32/64) specific defines / externs for KGDB. Based on
+ * the previous 32bit and 64bit specific files, which had the following
+ * copyrights:
+ *
+ * PPC64 Mods (C) 2005 Frank Rowand ([email protected])
+ * PPC Mods (C) 2004 Tom Rini ([email protected])
+ * PPC Mods (C) 2003 John Whitney ([email protected])
* PPC Mods (C) 1998 Michael Tesch ([email protected])
*
+ *
* Copyright (C) 1995 David S. Miller ([email protected])
+ * Author: Tom Rini <[email protected]>
+ *
+ * 2006 (c) MontaVista Software, Inc. This file is licensed under
+ * the terms of the GNU General Public License version 2. This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
*/
#ifdef __KERNEL__
-#ifndef _PPC_KGDB_H
-#define _PPC_KGDB_H
-
-#ifndef __ASSEMBLY__
-
-/* Things specific to the gen550 backend. */
-struct uart_port;
-
-extern void gen550_progress(char *, unsigned short);
-extern void gen550_kgdb_map_scc(void);
-extern void gen550_init(int, struct uart_port *);
+#ifndef __POWERPC_KGDB_H__
+#define __POWERPC_KGDB_H__
-/* Things specific to the pmac backend. */
-extern void zs_kgdb_hook(int tty_num);
+#include <asm-generic/kgdb.h>
-/* To init the kgdb engine. (called by serial hook)*/
-extern void set_debug_traps(void);
-
-/* To enter the debugger explicitly. */
-extern void breakpoint(void);
-
-/* For taking exceptions
- * these are defined in traps.c
- */
-extern int (*debugger)(struct pt_regs *regs);
-extern int (*debugger_bpt)(struct pt_regs *regs);
-extern int (*debugger_sstep)(struct pt_regs *regs);
-extern int (*debugger_iabr_match)(struct pt_regs *regs);
-extern int (*debugger_dabr_match)(struct pt_regs *regs);
-extern void (*debugger_fault_handler)(struct pt_regs *regs);
-
-/* What we bring to the party */
-int kgdb_bpt(struct pt_regs *regs);
-int kgdb_sstep(struct pt_regs *regs);
-void kgdb(struct pt_regs *regs);
-int kgdb_iabr_match(struct pt_regs *regs);
-int kgdb_dabr_match(struct pt_regs *regs);
+#ifndef __ASSEMBLY__
+#define BREAK_INSTR_SIZE 4
+#define BUFMAX ((NUMREGBYTES * 2) + 512)
+#define OUTBUFMAX ((NUMREGBYTES * 2) + 512)
+#define BREAKPOINT() asm(".long 0x7d821008"); /* twge r2, r2 */
+#define CACHE_FLUSH_IS_SAFE 1
+
+/* The number bytes of registers we have to save depends on a few
+ * things. For 64bit we default to not including vector registers and
+ * vector state registers. */
+#ifdef CONFIG_PPC64
/*
- * external low-level support routines (ie macserial.c)
+ * 64 bit (8 byte) registers:
+ * 32 gpr, 32 fpr, nip, msr, link, ctr
+ * 32 bit (4 byte) registers:
+ * ccr, xer, fpscr
*/
-extern void kgdb_interruptible(int); /* control interrupts from serial */
-extern void putDebugChar(char); /* write a single character */
-extern char getDebugChar(void); /* read and return a single char */
-
+#define NUMREGBYTES ((68 * 8) + (3 * 4))
+#define NUMCRITREGBYTES 184
+#else /* CONFIG_PPC32 */
+/* On non-E500 family PPC32 we determine the size by picking the last
+ * register we need, but on E500 we skip sections so we list what we
+ * need to store, and add it up. */
+#ifndef CONFIG_E500
+#define MAXREG (PT_FPSCR+1)
+#else
+/* 32 GPRs (8 bytes), nip, msr, ccr, link, ctr, xer, acc (8 bytes), spefscr*/
+#define MAXREG ((32*2)+6+2+1)
+#endif
+#define NUMREGBYTES (MAXREG * sizeof(int))
+/* CR/LR, R1, R2, R13-R31 inclusive. */
+#define NUMCRITREGBYTES (23 * sizeof(int))
+#endif /* 32/64 */
#endif /* !(__ASSEMBLY__) */
-#endif /* !(_PPC_KGDB_H) */
+#endif /* !__POWERPC_KGDB_H__ */
#endif /* __KERNEL__ */
--- a/include/asm-ppc/kgdb.h
+++ b/include/asm-ppc/kgdb.h
@@ -1,57 +1,18 @@
-/*
- * kgdb.h: Defines and declarations for serial line source level
- * remote debugging of the Linux kernel using gdb.
- *
- * PPC Mods (C) 1998 Michael Tesch ([email protected])
- *
- * Copyright (C) 1995 David S. Miller ([email protected])
- */
#ifdef __KERNEL__
-#ifndef _PPC_KGDB_H
-#define _PPC_KGDB_H
-
+#ifndef __PPC_KGDB_H__
+#define __PPC_KGDB_H__
+#include <asm-powerpc/kgdb.h>
#ifndef __ASSEMBLY__
-
-/* Things specific to the gen550 backend. */
-struct uart_port;
-
-extern void gen550_progress(char *, unsigned short);
-extern void gen550_kgdb_map_scc(void);
-extern void gen550_init(int, struct uart_port *);
-
-/* Things specific to the pmac backend. */
-extern void zs_kgdb_hook(int tty_num);
-
-/* To init the kgdb engine. (called by serial hook)*/
-extern void set_debug_traps(void);
-
-/* To enter the debugger explicitly. */
-extern void breakpoint(void);
-
-/* For taking exceptions
- * these are defined in traps.c
- */
-extern int (*debugger)(struct pt_regs *regs);
+ /* For taking exceptions
+ * these are defined in traps.c
+ */
+struct pt_regs;
+extern void (*debugger)(struct pt_regs *regs);
extern int (*debugger_bpt)(struct pt_regs *regs);
extern int (*debugger_sstep)(struct pt_regs *regs);
extern int (*debugger_iabr_match)(struct pt_regs *regs);
extern int (*debugger_dabr_match)(struct pt_regs *regs);
extern void (*debugger_fault_handler)(struct pt_regs *regs);
-
-/* What we bring to the party */
-int kgdb_bpt(struct pt_regs *regs);
-int kgdb_sstep(struct pt_regs *regs);
-void kgdb(struct pt_regs *regs);
-int kgdb_iabr_match(struct pt_regs *regs);
-int kgdb_dabr_match(struct pt_regs *regs);
-
-/*
- * external low-level support routines (ie macserial.c)
- */
-extern void kgdb_interruptible(int); /* control interrupts from serial */
-extern void putDebugChar(char); /* write a single character */
-extern char getDebugChar(void); /* read and return a single char */
-
-#endif /* !(__ASSEMBLY__) */
-#endif /* !(_PPC_KGDB_H) */
+#endif /* !__ASSEMBLY__ */
+#endif /* __PPC_KGDB_H__ */
#endif /* __KERNEL__ */
--- a/include/asm-ppc/machdep.h
+++ b/include/asm-ppc/machdep.h
@@ -68,9 +68,7 @@ struct machdep_calls {
unsigned long (*find_end_of_memory)(void);
void (*setup_io_mappings)(void);
- void (*early_serial_map)(void);
void (*progress)(char *, unsigned short);
- void (*kgdb_map_scc)(void);
unsigned char (*nvram_read_val)(int addr);
void (*nvram_write_val)(int addr, unsigned char val);
--- a/include/asm-ppc/mv64x60.h
+++ b/include/asm-ppc/mv64x60.h
@@ -340,6 +340,8 @@ u32 mv64x60_calc_mem_size(struct mv64x60
void mv64x60_progress_init(u32 base);
void mv64x60_mpsc_progress(char *s, unsigned short hex);
+struct platform_device *mv64x60_early_get_pdev_data(const char *name,
+ int id, int remove);
extern struct mv64x60_32bit_window
gt64260_32bit_windows[MV64x60_32BIT_WIN_COUNT];
--- a/include/asm-ppc/mv64x60_defs.h
+++ b/include/asm-ppc/mv64x60_defs.h
@@ -57,7 +57,8 @@
#define MV64x60_IRQ_I2C 37
#define MV64x60_IRQ_BRG 39
#define MV64x60_IRQ_MPSC_0 40
-#define MV64x60_IRQ_MPSC_1 42
+#define MV64360_IRQ_MPSC_1 41
+#define GT64260_IRQ_MPSC_1 42
#define MV64x60_IRQ_COMM 43
#define MV64x60_IRQ_P0_GPP_0_7 56
#define MV64x60_IRQ_P0_GPP_8_15 57
--- a/lib/Kconfig.kgdb
+++ b/lib/Kconfig.kgdb
@@ -13,7 +13,7 @@ config UNWIND_INFO
config KGDB
bool "KGDB: kernel debugging with remote gdb"
select WANT_EXTRA_DEBUG_INFORMATION
- depends on DEBUG_KERNEL && (X86)
+ depends on DEBUG_KERNEL && (X86 || PPC)
help
If you say Y here, it will be possible to remotely debug the
kernel using gdb. Documentation of kernel debugger is available
@@ -39,6 +39,8 @@ config KGDB_CONSOLE
choice
prompt "Method for KGDB communication"
depends on KGDB
+ default KGDB_MPSC if SERIAL_MPSC
+ default KGDB_CPM_UART if (CPM2 || 8xx)
default KGDB_8250_NOMODULE
help
There are a number of different ways in which you can communicate
@@ -75,6 +77,50 @@ config KGDBOE_NOMODULE
In order for this to work, the ethernet interface specified must
support the NETPOLL API, and this must be initialized at boot.
See the documentation for syntax.
+
+config KGDB_MPSC
+ bool "KGDB: On MV64x60 MPSC"
+ depends on SERIAL_MPSC
+ help
+ Uses a Marvell GT64260B or MV64x60 Multi-Purpose Serial
+ Controller (MPSC) channel. Note that the GT64260A is not
+ supported.
+
+config KGDB_CPM_UART
+ bool "KGDB: On CPM UART"
+ depends on PPC && (CPM2 || 8xx)
+ help
+ Uses CPM UART to communicate with the host GDB.
+endchoice
+
+choice
+ prompt "SCC/SMC to use for KGDB"
+ depends on KGDB_CPM_UART
+ default KGDB_CPM_UART_SCC4 if ADS8272
+
+config KGDB_CPM_UART_SCC1
+ bool "SCC1"
+ depends on SERIAL_CPM_SCC1
+
+config KGDB_CPM_UART_SCC2
+ bool "SCC2"
+ depends on SERIAL_CPM_SCC2
+
+config KGDB_CPM_UART_SCC3
+ bool "SCC3"
+ depends on SERIAL_CPM_SCC3
+
+config KGDB_CPM_UART_SCC4
+ bool "SCC4"
+ depends on SERIAL_CPM_SCC4
+
+config KGDB_CPM_UART_SMC1
+ bool "SMC1"
+ depends on SERIAL_CPM_SMC1
+
+config KGDB_CPM_UART_SMC2
+ bool "SMC2"
+ depends on SERIAL_CPM_SMC2
endchoice
config KGDBOE
@@ -111,7 +157,8 @@ config KGDB_SIMPLE_SERIAL
config KGDB_BAUDRATE
int "Debug serial port baud rate"
- depends on (KGDB_8250 && KGDB_SIMPLE_SERIAL)
+ depends on (KGDB_8250 && KGDB_SIMPLE_SERIAL) || \
+ KGDB_MPSC || KGDB_CPM_UART
default "115200"
help
gdb and the kernel stub need to agree on the baud rate to be
--- a/arch/ppc/kernel/Makefile
+++ b/arch/ppc/kernel/Makefile
@@ -14,7 +14,7 @@ obj-y := entry.o traps.o time.o misc.
obj-$(CONFIG_MODULES) += ppc_ksyms.o
obj-$(CONFIG_PCI) += pci.o
obj-$(CONFIG_RAPIDIO) += rio.o
-obj-$(CONFIG_KGDB) += ppc-stub.o
+obj-$(CONFIG_KGDB) += kgdb.o kgdb_setjmp32.o
obj-$(CONFIG_SMP) += smp.o smp-tbsync.o
obj-$(CONFIG_KEXEC) += machine_kexec.o relocate_kernel.o
--- /dev/null
+++ b/arch/powerpc/kernel/kgdb_setjmp32.S
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 1996 Paul Mackerras
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program as licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+#include <asm/processor.h>
+#include <asm/ppc_asm.h>
+
+ .text
+
+/*
+ * Save/restore state in case a memory access causes a fault.
+ *
+ * int kgdb_fault_setjmp(unsigned long *curr_context);
+ * void kgdb_fault_longjmp(unsigned long *curr_context);
+ */
+
+_GLOBAL(kgdb_fault_setjmp)
+ mflr r0
+ stw r0,0(r3)
+ stw r1,4(r3)
+ stw r2,8(r3)
+ mfcr r0
+ stw r0,12(r3)
+ stmw r13,16(r3)
+ li r3,0
+ blr
+
+_GLOBAL(kgdb_fault_longjmp)
+ lmw r13,16(r3)
+ lwz r0,12(r3)
+ mtcrf 0x38,r0
+ lwz r0,0(r3)
+ lwz r1,4(r3)
+ lwz r2,8(r3)
+ mtlr r0
+ mr r3,r1
+ blr
--- /dev/null
+++ b/arch/powerpc/kernel/kgdb_setjmp64.S
@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 1996 Paul Mackerras
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program as licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+#include <asm/processor.h>
+#include <asm/ppc_asm.h>
+
+ .text
+
+/*
+ * Save/restore state in case a memory access causes a fault.
+ *
+ * int kgdb_fault_setjmp(unsigned long *curr_context);
+ * void kgdb_fault_longjmp(unsigned long *curr_context);
+ */
+
+_GLOBAL(kgdb_fault_setjmp)
+ mflr r0
+ std r0,0(r3)
+ std r1,8(r3)
+ std r2,16(r3)
+ mfcr r0
+ std r0,24(r3)
+ std r13,32(r3)
+ std r14,40(r3)
+ std r15,48(r3)
+ std r16,56(r3)
+ std r17,64(r3)
+ std r18,72(r3)
+ std r19,80(r3)
+ std r20,88(r3)
+ std r21,96(r3)
+ std r22,104(r3)
+ std r23,112(r3)
+ std r24,120(r3)
+ std r25,128(r3)
+ std r26,136(r3)
+ std r27,144(r3)
+ std r28,152(r3)
+ std r29,160(r3)
+ std r30,168(r3)
+ std r31,176(r3)
+ li r3,0
+ blr
+
+_GLOBAL(kgdb_fault_longjmp)
+ ld r13,32(r3)
+ ld r14,40(r3)
+ ld r15,48(r3)
+ ld r16,56(r3)
+ ld r17,64(r3)
+ ld r18,72(r3)
+ ld r19,80(r3)
+ ld r20,88(r3)
+ ld r21,96(r3)
+ ld r22,104(r3)
+ ld r23,112(r3)
+ ld r24,120(r3)
+ ld r25,128(r3)
+ ld r26,136(r3)
+ ld r27,144(r3)
+ ld r28,152(r3)
+ ld r29,160(r3)
+ ld r30,168(r3)
+ ld r31,176(r3)
+ ld r0,24(r3)
+ mtcrf 0x38,r0
+ ld r0,0(r3)
+ ld r1,8(r3)
+ ld r2,16(r3)
+ mtlr r0
+ mr r3,r1
+ blr
--- /dev/null
+++ b/arch/ppc/kernel/kgdb_setjmp32.S
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 1996 Paul Mackerras
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program as licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+#include <asm/processor.h>
+#include <asm/ppc_asm.h>
+
+ .text
+
+/*
+ * Save/restore state in case a memory access causes a fault.
+ *
+ * int kgdb_fault_setjmp(unsigned long *curr_context);
+ * void kgdb_fault_longjmp(unsigned long *curr_context);
+ */
+
+_GLOBAL(kgdb_fault_setjmp)
+ mflr r0
+ stw r0,0(r3)
+ stw r1,4(r3)
+ stw r2,8(r3)
+ mfcr r0
+ stw r0,12(r3)
+ stmw r13,16(r3)
+ li r3,0
+ blr
+
+_GLOBAL(kgdb_fault_longjmp)
+ lmw r13,16(r3)
+ lwz r0,12(r3)
+ mtcrf 0x38,r0
+ lwz r0,0(r3)
+ lwz r1,4(r3)
+ lwz r2,8(r3)
+ mtlr r0
+ mr r3,r1
+ blr
--- a/arch/ppc/platforms/83xx/mpc834x_sys.c
+++ b/arch/ppc/platforms/83xx/mpc834x_sys.c
@@ -42,11 +42,11 @@
#include <asm/pci-bridge.h>
#include <asm/mpc83xx.h>
#include <asm/irq.h>
-#include <asm/kgdb.h>
#include <asm/ppc_sys.h>
#include <mm/mmu_decl.h>
#include <syslib/ppc83xx_setup.h>
+#include <syslib/gen550.h>
#ifndef CONFIG_PCI
unsigned long isa_io_base = 0;
@@ -114,7 +114,9 @@ mpc834x_sys_setup_arch(void)
/* setup PCI host bridges */
mpc83xx_setup_hose();
#endif
+#if defined(CONFIG_SERIAL_8250) || defined(CONFIG_KGDB_8250)
mpc83xx_early_serial_map();
+#endif
/* setup the board related info for the MDIO bus */
mdata = (struct gianfar_mdio_data *) ppc_sys_get_pdata(MPC83xx_MDIO);
@@ -334,7 +336,6 @@ platform_init(unsigned long r3, unsigned
ppc_md.get_rtc_time = NULL;
ppc_md.calibrate_decr = mpc83xx_calibrate_decr;
- ppc_md.early_serial_map = mpc83xx_early_serial_map;
#if defined(CONFIG_SERIAL_8250) && defined(CONFIG_SERIAL_TEXT_DEBUG)
ppc_md.progress = gen550_progress;
#endif /* CONFIG_SERIAL_8250 && CONFIG_SERIAL_TEXT_DEBUG */
--- a/arch/ppc/platforms/85xx/mpc8540_ads.c
+++ b/arch/ppc/platforms/85xx/mpc8540_ads.c
@@ -43,11 +43,11 @@
#include <asm/mpc85xx.h>
#include <asm/irq.h>
#include <asm/immap_85xx.h>
-#include <asm/kgdb.h>
#include <asm/ppc_sys.h>
#include <mm/mmu_decl.h>
#include <syslib/ppc85xx_setup.h>
+#include <syslib/gen550.h>
/* ************************************************************************
*
@@ -77,7 +77,7 @@ mpc8540ads_setup_arch(void)
mpc85xx_setup_hose();
#endif
-#ifdef CONFIG_SERIAL_8250
+#if defined(CONFIG_SERIAL_8250) || defined(CONFIG_KGDB_8250)
mpc85xx_early_serial_map();
#endif
@@ -215,9 +215,6 @@ platform_init(unsigned long r3, unsigned
#if defined(CONFIG_SERIAL_8250) && defined(CONFIG_SERIAL_TEXT_DEBUG)
ppc_md.progress = gen550_progress;
#endif /* CONFIG_SERIAL_8250 && CONFIG_SERIAL_TEXT_DEBUG */
-#if defined(CONFIG_SERIAL_8250) && defined(CONFIG_KGDB)
- ppc_md.early_serial_map = mpc85xx_early_serial_map;
-#endif /* CONFIG_SERIAL_8250 && CONFIG_KGDB */
if (ppc_md.progress)
ppc_md.progress("mpc8540ads_init(): exit", 0);
--- a/arch/ppc/platforms/85xx/mpc8560_ads.c
+++ b/arch/ppc/platforms/85xx/mpc8560_ads.c
@@ -44,7 +44,6 @@
#include <asm/mpc85xx.h>
#include <asm/irq.h>
#include <asm/immap_85xx.h>
-#include <asm/kgdb.h>
#include <asm/ppc_sys.h>
#include <asm/cpm2.h>
#include <mm/mmu_decl.h>
--- a/arch/ppc/platforms/85xx/mpc85xx_cds_common.c
+++ b/arch/ppc/platforms/85xx/mpc85xx_cds_common.c
@@ -47,12 +47,12 @@
#include <asm/immap_85xx.h>
#include <asm/cpm2.h>
#include <asm/ppc_sys.h>
-#include <asm/kgdb.h>
#include <mm/mmu_decl.h>
#include <syslib/cpm2_pic.h>
#include <syslib/ppc85xx_common.h>
#include <syslib/ppc85xx_setup.h>
+#include <syslib/gen550.h>
#ifndef CONFIG_PCI
@@ -436,7 +436,7 @@ mpc85xx_cds_setup_arch(void)
mpc85xx_setup_hose();
#endif
-#ifdef CONFIG_SERIAL_8250
+#if defined(CONFIG_SERIAL_8250) || defined(CONFIG_KGDB_8250)
mpc85xx_early_serial_map();
#endif
@@ -590,9 +590,6 @@ platform_init(unsigned long r3, unsigned
#if defined(CONFIG_SERIAL_8250) && defined(CONFIG_SERIAL_TEXT_DEBUG)
ppc_md.progress = gen550_progress;
#endif /* CONFIG_SERIAL_8250 && CONFIG_SERIAL_TEXT_DEBUG */
-#if defined(CONFIG_SERIAL_8250) && defined(CONFIG_KGDB)
- ppc_md.early_serial_map = mpc85xx_early_serial_map;
-#endif /* CONFIG_SERIAL_8250 && CONFIG_KGDB */
if (ppc_md.progress)
ppc_md.progress("mpc85xx_cds_init(): exit", 0);
--- a/arch/ppc/platforms/85xx/tqm85xx.c
+++ b/arch/ppc/platforms/85xx/tqm85xx.c
@@ -46,7 +46,6 @@
#include <asm/mpc85xx.h>
#include <asm/irq.h>
#include <asm/immap_85xx.h>
-#include <asm/kgdb.h>
#include <asm/ppc_sys.h>
#include <asm/cpm2.h>
#include <mm/mmu_decl.h>
@@ -55,6 +54,7 @@
#include <syslib/cpm2_pic.h>
#include <syslib/ppc85xx_common.h>
#include <syslib/ppc85xx_rio.h>
+#include <syslib/gen550.h>
#ifndef CONFIG_PCI
unsigned long isa_io_base = 0;
@@ -121,7 +121,7 @@ tqm85xx_setup_arch(void)
#endif
#ifndef CONFIG_MPC8560
-#if defined(CONFIG_SERIAL_8250)
+#if defined(CONFIG_SERIAL_8250) || defined(CONFIG_KGDB_8250)
mpc85xx_early_serial_map();
#endif
@@ -400,9 +400,6 @@ platform_init(unsigned long r3, unsigned
#if defined(CONFIG_SERIAL_8250) && defined(CONFIG_SERIAL_TEXT_DEBUG)
ppc_md.progress = gen550_progress;
#endif /* CONFIG_SERIAL_8250 && CONFIG_SERIAL_TEXT_DEBUG */
-#if defined(CONFIG_SERIAL_8250) && defined(CONFIG_KGDB)
- ppc_md.early_serial_map = mpc85xx_early_serial_map;
-#endif /* CONFIG_SERIAL_8250 && CONFIG_KGDB */
#endif /* CONFIG_MPC8560 */
if (ppc_md.progress)
--- a/arch/ppc/syslib/gen550_kgdb.c
+++ /dev/null
@@ -1,83 +0,0 @@
-/*
- * Generic 16550 kgdb support intended to be useful on a variety
- * of platforms. To enable this support, it is necessary to set
- * the CONFIG_GEN550 option. Any virtual mapping of the serial
- * port(s) to be used can be accomplished by setting
- * ppc_md.early_serial_map to a platform-specific mapping function.
- *
- * Adapted from ppc4xx_kgdb.c.
- *
- * Author: Matt Porter <[email protected]>
- *
- * 2002-2004 (c) MontaVista Software, Inc. This file is licensed under
- * the terms of the GNU General Public License version 2. This program
- * is licensed "as is" without any warranty of any kind, whether express
- * or implied.
- */
-
-#include <linux/types.h>
-#include <linux/kernel.h>
-
-#include <asm/machdep.h>
-
-extern unsigned long serial_init(int, void *);
-extern unsigned long serial_getc(unsigned long);
-extern unsigned long serial_putc(unsigned long, unsigned char);
-
-#if defined(CONFIG_KGDB_TTYS0)
-#define KGDB_PORT 0
-#elif defined(CONFIG_KGDB_TTYS1)
-#define KGDB_PORT 1
-#elif defined(CONFIG_KGDB_TTYS2)
-#define KGDB_PORT 2
-#elif defined(CONFIG_KGDB_TTYS3)
-#define KGDB_PORT 3
-#else
-#error "invalid kgdb_tty port"
-#endif
-
-static volatile unsigned int kgdb_debugport;
-
-void putDebugChar(unsigned char c)
-{
- if (kgdb_debugport == 0)
- kgdb_debugport = serial_init(KGDB_PORT, NULL);
-
- serial_putc(kgdb_debugport, c);
-}
-
-int getDebugChar(void)
-{
- if (kgdb_debugport == 0)
- kgdb_debugport = serial_init(KGDB_PORT, NULL);
-
- return(serial_getc(kgdb_debugport));
-}
-
-void kgdb_interruptible(int enable)
-{
- return;
-}
-
-void putDebugString(char* str)
-{
- while (*str != '\0') {
- putDebugChar(*str);
- str++;
- }
- putDebugChar('\r');
- return;
-}
-
-/*
- * Note: gen550_init() must be called already on the port we are going
- * to use.
- */
-void
-gen550_kgdb_map_scc(void)
-{
- printk(KERN_DEBUG "kgdb init\n");
- if (ppc_md.early_serial_map)
- ppc_md.early_serial_map();
- kgdb_debugport = serial_init(KGDB_PORT, NULL);
-}
--- a/arch/ppc/syslib/ppc83xx_setup.c
+++ b/arch/ppc/syslib/ppc83xx_setup.c
@@ -30,12 +30,12 @@
#include <linux/tty.h> /* for linux/serial_core.h */
#include <linux/serial_core.h>
#include <linux/serial_8250.h>
+#include <linux/kgdb.h>
#include <asm/time.h>
#include <asm/mpc83xx.h>
#include <asm/mmu.h>
#include <asm/ppc_sys.h>
-#include <asm/kgdb.h>
#include <asm/delay.h>
#include <asm/machdep.h>
@@ -44,6 +44,7 @@
#include <asm/delay.h>
#include <syslib/ppc83xx_pci.h>
#endif
+#include <syslib/gen550.h>
phys_addr_t immrbar;
@@ -87,11 +88,11 @@ mpc83xx_calibrate_decr(void)
tb_to_us = mulhwu_scale_factor(freq / divisor, 1000000);
}
-#ifdef CONFIG_SERIAL_8250
+#if defined(CONFIG_SERIAL_8250) || defined(CONFIG_KGDB_8250)
void __init
mpc83xx_early_serial_map(void)
{
-#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
+#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB_8250)
struct uart_port serial_req;
#endif
struct plat_serial8250_port *pdata;
@@ -103,27 +104,40 @@ mpc83xx_early_serial_map(void)
pdata[0].mapbase += binfo->bi_immr_base;
pdata[0].membase = ioremap(pdata[0].mapbase, 0x100);
-#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
+#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB_8250)
memset(&serial_req, 0, sizeof (serial_req));
serial_req.iotype = UPIO_MEM;
serial_req.mapbase = pdata[0].mapbase;
serial_req.membase = pdata[0].membase;
serial_req.regshift = 0;
+ serial_req.irq = pdata[0].irq;
+ serial_req.flags = pdata[0].flags;
+ serial_req.uartclk = pdata[0].uartclk;
+#ifdef CONFIG_SERIAL_TEXT_DEBUG
gen550_init(0, &serial_req);
#endif
+#ifdef CONFIG_KGDB_8250
+ kgdb8250_add_port(0, &serial_req);
+#endif
+#endif
pdata[1].uartclk = binfo->bi_busfreq;
pdata[1].mapbase += binfo->bi_immr_base;
pdata[1].membase = ioremap(pdata[1].mapbase, 0x100);
-#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
+#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB_8250)
/* Assume gen550_init() doesn't modify serial_req */
serial_req.mapbase = pdata[1].mapbase;
serial_req.membase = pdata[1].membase;
+#ifdef CONFIG_SERIAL_TEXT_DEBUG
gen550_init(1, &serial_req);
#endif
+#ifdef CONFIG_KGDB_8250
+ kgdb8250_add_port(1, &serial_req);
+#endif
+#endif
}
#endif
--- a/arch/ppc/platforms/lopec.c
+++ b/arch/ppc/platforms/lopec.c
@@ -32,7 +32,8 @@
#include <asm/mpc10x.h>
#include <asm/hw_irq.h>
#include <asm/prep_nvram.h>
-#include <asm/kgdb.h>
+
+#include <syslib/gen550.h>
/*
* Define all of the IRQ senses and polarities. Taken from the
--- a/arch/ppc/syslib/ppc4xx_setup.c
+++ b/arch/ppc/syslib/ppc4xx_setup.c
@@ -32,7 +32,6 @@
#include <asm/processor.h>
#include <asm/machdep.h>
#include <asm/page.h>
-#include <asm/kgdb.h>
#include <asm/ibm4xx.h>
#include <asm/time.h>
#include <asm/todc.h>
--- a/arch/ppc/platforms/4xx/bamboo.c
+++ b/arch/ppc/platforms/4xx/bamboo.c
@@ -31,6 +31,7 @@
#include <linux/serial_core.h>
#include <linux/serial_8250.h>
#include <linux/ethtool.h>
+#include <linux/kgdb.h>
#include <asm/system.h>
#include <asm/pgtable.h>
@@ -338,10 +339,13 @@ bamboo_early_serial_map(void)
printk("Early serial init of port 0 failed\n");
}
-#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
+#ifdef CONFIG_SERIAL_TEXT_DEBUG
/* Configure debug serial access */
gen550_init(0, &port);
#endif
+#ifdef CONFIG_KGDB_8250
+ kgdb8250_add_port(0, &port);
+#endif
port.membase = ioremap64(PPC440EP_UART1_ADDR, 8);
port.irq = 1;
@@ -352,10 +356,13 @@ bamboo_early_serial_map(void)
printk("Early serial init of port 1 failed\n");
}
-#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
+#ifdef CONFIG_SERIAL_TEXT_DEBUG
/* Configure debug serial access */
gen550_init(1, &port);
#endif
+#ifdef CONFIG_KGDB_8250
+ kgdb8250_add_port(1, &port);
+#endif
port.membase = ioremap64(PPC440EP_UART2_ADDR, 8);
port.irq = 3;
@@ -366,10 +373,13 @@ bamboo_early_serial_map(void)
printk("Early serial init of port 2 failed\n");
}
-#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
+#ifdef CONFIG_SERIAL_TEXT_DEBUG
/* Configure debug serial access */
gen550_init(2, &port);
#endif
+#ifdef CONFIG_KGDB_8250
+ kgdb8250_add_port(2, &port);
+#endif
port.membase = ioremap64(PPC440EP_UART3_ADDR, 8);
port.irq = 4;
@@ -379,6 +389,10 @@ bamboo_early_serial_map(void)
if (early_serial_setup(&port) != 0) {
printk("Early serial init of port 3 failed\n");
}
+
+#ifdef CONFIG_KGDB_8250
+ kgdb8250_add_port(3, &port);
+#endif
}
static void __init
@@ -436,8 +450,5 @@ void __init platform_init(unsigned long
ppc_md.nvram_read_val = todc_direct_read_val;
ppc_md.nvram_write_val = todc_direct_write_val;
-#ifdef CONFIG_KGDB
- ppc_md.early_serial_map = bamboo_early_serial_map;
-#endif
}
--- a/arch/ppc/platforms/4xx/luan.c
+++ b/arch/ppc/platforms/4xx/luan.c
@@ -28,6 +28,7 @@
#include <linux/seq_file.h>
#include <linux/root_dev.h>
#include <linux/tty.h>
+#include <linux/kgdb.h>
#include <linux/serial.h>
#include <linux/serial_core.h>
#include <linux/serial_8250.h>
@@ -284,6 +285,9 @@ luan_early_serial_map(void)
if (early_serial_setup(&port) != 0) {
printk("Early serial init of port 0 failed\n");
}
+#ifdef CONFIG_KGDB_8250
+ kgdb8250_add_port(0, &port);
+#endif
port.membase = ioremap64(PPC440SP_UART1_ADDR, 8);
port.irq = UART1_INT;
@@ -293,6 +297,9 @@ luan_early_serial_map(void)
if (early_serial_setup(&port) != 0) {
printk("Early serial init of port 1 failed\n");
}
+#ifdef CONFIG_KGDB_8250
+ kgdb8250_add_port(1, &port);
+#endif
port.membase = ioremap64(PPC440SP_UART2_ADDR, 8);
port.irq = UART2_INT;
@@ -302,6 +309,9 @@ luan_early_serial_map(void)
if (early_serial_setup(&port) != 0) {
printk("Early serial init of port 2 failed\n");
}
+#ifdef CONFIG_KGDB_8250
+ kgdb8250_add_port(2, &port);
+#endif
}
static void __init
@@ -361,7 +371,4 @@ void __init platform_init(unsigned long
ppc_md.get_irq = NULL; /* Set in ppc4xx_pic_init() */
ppc_md.calibrate_decr = luan_calibrate_decr;
-#ifdef CONFIG_KGDB
- ppc_md.early_serial_map = luan_early_serial_map;
-#endif
}
--- a/arch/ppc/platforms/4xx/taishan.c
+++ b/arch/ppc/platforms/4xx/taishan.c
@@ -311,7 +311,7 @@ taishan_early_serial_map(void)
if (early_serial_setup(&port) != 0)
printk("Early serial init of port 0 failed\n");
-#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
+#ifdef CONFIG_SERIAL_TEXT_DEBUG
/* Configure debug serial access */
gen550_init(0, &port);
@@ -327,7 +327,7 @@ taishan_early_serial_map(void)
if (early_serial_setup(&port) != 0)
printk("Early serial init of port 1 failed\n");
-#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
+#ifdef CONFIG_SERIAL_TEXT_DEBUG
/* Configure debug serial access */
gen550_init(1, &port);
#endif
@@ -388,9 +388,6 @@ void __init platform_init(unsigned long
ppc_md.calibrate_decr = taishan_calibrate_decr;
-#ifdef CONFIG_KGDB
- ppc_md.early_serial_map = taishan_early_serial_map;
-#endif
ppc_md.init = taishan_init;
}
--- a/arch/ppc/platforms/4xx/xilinx_ml403.c
+++ b/arch/ppc/platforms/4xx/xilinx_ml403.c
@@ -43,9 +43,6 @@
* ppc4xx_map_io arch/ppc/syslib/ppc4xx_setup.c
* start_kernel init/main.c
* setup_arch arch/ppc/kernel/setup.c
- * #if defined(CONFIG_KGDB)
- * *ppc_md.kgdb_map_scc() == gen550_kgdb_map_scc
- * #endif
* *ppc_md.setup_arch == ml403_setup_arch this file
* ppc4xx_setup_arch arch/ppc/syslib/ppc4xx_setup.c
* ppc4xx_find_bridges arch/ppc/syslib/ppc405_pci.c
--- a/arch/ppc/platforms/4xx/yucca.c
+++ b/arch/ppc/platforms/4xx/yucca.c
@@ -387,7 +387,4 @@ void __init platform_init(unsigned long
ppc_md.get_irq = NULL; /* Set in ppc4xx_pic_init() */
ppc_md.calibrate_decr = yucca_calibrate_decr;
-#ifdef CONFIG_KGDB
- ppc_md.early_serial_map = yucca_early_serial_map;
-#endif
}
--- a/arch/ppc/platforms/ev64260.c
+++ b/arch/ppc/platforms/ev64260.c
@@ -331,7 +331,7 @@ ev64260_early_serial_map(void)
port.iotype = UPIO_MEM;
port.flags = STD_COM_FLAGS;
-#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
+#ifdef CONFIG_SERIAL_TEXT_DEBUG
gen550_init(0, &port);
#endif
@@ -569,7 +569,7 @@ ev64260_set_bat(void)
return;
}
-#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
+#ifdef CONFIG_SERIAL_TEXT_DEBUG
static void __init
ev64260_map_io(void)
{
@@ -625,20 +625,12 @@ platform_init(unsigned long r3, unsigned
ppc_md.setup_io_mappings = ev64260_map_io;
ppc_md.progress = gen550_progress;
#endif
-#if defined(CONFIG_KGDB)
- ppc_md.setup_io_mappings = ev64260_map_io;
- ppc_md.early_serial_map = ev64260_early_serial_map;
-#endif
#elif defined(CONFIG_SERIAL_MPSC_CONSOLE)
#ifdef CONFIG_SERIAL_TEXT_DEBUG
ppc_md.setup_io_mappings = ev64260_map_io;
ppc_md.progress = mv64x60_mpsc_progress;
mv64x60_progress_init(CONFIG_MV64X60_NEW_BASE);
#endif /* CONFIG_SERIAL_TEXT_DEBUG */
-#ifdef CONFIG_KGDB
- ppc_md.setup_io_mappings = ev64260_map_io;
- ppc_md.early_serial_map = ev64260_early_serial_map;
-#endif /* CONFIG_KGDB */
#endif
--- a/arch/ppc/platforms/hdpu.c
+++ b/arch/ppc/platforms/hdpu.c
@@ -281,25 +281,6 @@ static void __init hdpu_setup_bridge(voi
#if defined(CONFIG_SERIAL_MPSC_CONSOLE)
static void __init hdpu_early_serial_map(void)
{
-#ifdef CONFIG_KGDB
- static char first_time = 1;
-
-#if defined(CONFIG_KGDB_TTYS0)
-#define KGDB_PORT 0
-#elif defined(CONFIG_KGDB_TTYS1)
-#define KGDB_PORT 1
-#else
-#error "Invalid kgdb_tty port"
-#endif
-
- if (first_time) {
- gt_early_mpsc_init(KGDB_PORT,
- B9600 | CS8 | CREAD | HUPCL | CLOCAL);
- first_time = 0;
- }
-
- return;
-#endif
}
#endif
--- a/arch/ppc/platforms/radstone_ppc7d.c
+++ b/arch/ppc/platforms/radstone_ppc7d.c
@@ -85,7 +85,7 @@ unsigned char __res[sizeof(bd_t)];
* Serial port code
*****************************************************************************/
-#if defined(CONFIG_KGDB) || defined(CONFIG_SERIAL_TEXT_DEBUG)
+#ifdef CONFIG_SERIAL_TEXT_DEBUG
static void __init ppc7d_early_serial_map(void)
{
#if defined(CONFIG_SERIAL_MPSC_CONSOLE)
@@ -114,10 +114,10 @@ static void __init ppc7d_early_serial_ma
if (early_serial_setup(&serial_req) != 0)
printk(KERN_ERR "Early serial init of port 1 failed\n");
#else
-#error CONFIG_KGDB || CONFIG_SERIAL_TEXT_DEBUG has no supported CONFIG_SERIAL_XXX
+#error CONFIG_SERIAL_TEXT_DEBUG has no supported CONFIG_SERIAL_XXX
#endif
}
-#endif /* CONFIG_KGDB || CONFIG_SERIAL_TEXT_DEBUG */
+#endif /* CONFIG_SERIAL_TEXT_DEBUG */
/*****************************************************************************
* Low-level board support code
@@ -1460,18 +1460,16 @@ void __init platform_init(unsigned long
PPC7D_CPLD_COMS_COM4_TXEN, PPC7D_CPLD_COMS);
#endif /* CONFIG_SERIAL_MPSC */
-#if defined(CONFIG_KGDB) || defined(CONFIG_SERIAL_TEXT_DEBUG)
+#ifdef CONFIG_SERIAL_TEXT_DEBUG
ppc7d_early_serial_map();
-#ifdef CONFIG_SERIAL_TEXT_DEBUG
#if defined(CONFIG_SERIAL_MPSC_CONSOLE)
ppc_md.progress = mv64x60_mpsc_progress;
#elif defined(CONFIG_SERIAL_8250)
ppc_md.progress = gen550_progress;
#else
-#error CONFIG_KGDB || CONFIG_SERIAL_TEXT_DEBUG has no supported CONFIG_SERIAL_XXX
+#error CONFIG_SERIAL_TEXT_DEBUG has no supported CONFIG_SERIAL_XXX
#endif /* CONFIG_SERIAL_8250 */
#endif /* CONFIG_SERIAL_TEXT_DEBUG */
-#endif /* CONFIG_KGDB || CONFIG_SERIAL_TEXT_DEBUG */
/* Enable write access to user flash. This is necessary for
* flash probe.
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