Truxton Fulton wrote:
Hi,
I verified on my IDEQ210M that performing the old reboot sequence
followed by the new reboot sequence works for me, and I suspect that
it will work for Lee also. Like this :
/* old method, works on most machines */
for (i = 0; i < 100; i++) {
kb_wait();
udelay(50);
outb(0xfe, 0x64); /* pulse reset low */
udelay(50);
}
/* new method, sets the "System flag" which when set,
indicates successful completion of the keyboard controller
self-test (Basic Assurance Test, BAT). This is needed
for some machines with no keyboard plugged in */
for (i = 0; i < 100; i++) {
kb_wait();
udelay(50);
outb(0x60, 0x64); /* write Controller Command Byte */
udelay(50);
kb_wait();
udelay(50);
outb(0x14, 0x60); /* set "System flag" */
udelay(50);
kb_wait();
udelay(50);
outb(0xfe, 0x64); /* pulse reset low */
udelay(50);
}
Thanks,
-Truxton
Hello everyone,
I compiled a 2.6.21.1 kernel with Truxton's suggestion mentioned
above. My laptop reboots normally with it. For convenience I've
diffed a patch, which is appended to this mail.
Regards,
Lee
--- a/include/asm-i386/mach-default/mach_reboot.h 2007-05-11 16:12:56.000000000 +0200
+++ b/include/asm-i386/mach-default/mach_reboot.h 2007-05-11 16:13:54.000000000 +0200
@@ -19,20 +19,32 @@
static inline void mach_reboot(void)
{
int i;
- for (i = 0; i < 10; i++) {
- kb_wait();
- udelay(50);
- outb(0x60, 0x64); /* write Controller Command Byte */
- udelay(50);
- kb_wait();
- udelay(50);
- outb(0x14, 0x60); /* set "System flag" */
- udelay(50);
- kb_wait();
- udelay(50);
- outb(0xfe, 0x64); /* pulse reset low */
- udelay(50);
- }
+ /* old method, works on most machines */
+ for (i = 0; i < 100; i++) {
+ kb_wait();
+ udelay(50);
+ outb(0xfe, 0x64); /* pulse reset low */
+ udelay(50);
+ }
+
+ /* new method, sets the "System flag" which when set,
+ indicates successful completion of the keyboard controller
+ self-test (Basic Assurance Test, BAT). This is needed
+ for some machines with no keyboard plugged in */
+ for (i = 0; i < 100; i++) {
+ kb_wait();
+ udelay(50);
+ outb(0x60, 0x64); /* write Controller Command Byte */
+ udelay(50);
+ kb_wait();
+ udelay(50);
+ outb(0x14, 0x60); /* set "System flag" */
+ udelay(50);
+ kb_wait();
+ udelay(50);
+ outb(0xfe, 0x64); /* pulse reset low */
+ udelay(50);
+ }
}
#endif /* !_MACH_REBOOT_H */
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