Changelog between v3 of EFI x86_64 support patch and this version
1. Change 64bit parameter description to 8 bytes in zero-page.txt
2. Add document for EFI related boot options.
---
This patch adds document for EFI x86_64 runtime services support. The
boot parameters added are documented in
Documentation/i386/zero-page.txt. The boot options added are
documented in Documentation/x86_64/boot-options.txt.
---
i386/zero-page.txt | 21 ++++++++++++++++-----
x86_64/boot-options.txt | 10 +++++++++-
2 files changed, 25 insertions(+), 6 deletions(-)
Signed-off-by: Chandramouli Narayanan <[email protected]>
Signed-off-by: Huang Ying <[email protected]>
Index: linux-2.6.23-rc2/Documentation/i386/zero-page.txt
===================================================================
--- linux-2.6.23-rc2.orig/Documentation/i386/zero-page.txt 2007-08-13 13:08:39.000000000 +0800
+++ linux-2.6.23-rc2/Documentation/i386/zero-page.txt 2007-08-13 13:08:53.000000000 +0800
@@ -31,11 +31,11 @@
0xb0 - 0x13f Free. Add more parameters here if you really need them.
0x140- 0x1be EDID_INFO Video mode setup
-0x1c4 unsigned long EFI system table pointer
-0x1c8 unsigned long EFI memory descriptor size
-0x1cc unsigned long EFI memory descriptor version
-0x1d0 unsigned long EFI memory descriptor map pointer
-0x1d4 unsigned long EFI memory descriptor map size
+0x1c4 unsigned long EFI system table pointer*
+0x1c8 unsigned long EFI memory descriptor size*
+0x1cc unsigned long EFI memory descriptor version*
+0x1d0 unsigned long EFI memory descriptor map pointer*
+0x1d4 unsigned long EFI memory descriptor map size*
0x1e0 unsigned long ALT_MEM_K, alternative mem check, in Kb
0x1e4 unsigned long Scratch field for the kernel setup code
0x1e8 char number of entries in E820MAP (below)
@@ -87,3 +87,14 @@
0x2d0 - 0xd00 E820MAP
0xd00 - 0xeff EDDBUF (edd.S) for disk signature read sector
0xd00 - 0xeeb EDDBUF (edd.S) for edd data
+
+Changes for x86_64 implementation:
+---------------------------------
+For alignment purposes, the following parameters are rearranged.
+
+0x1c0 4 bytes EFI Loader signature, ="EFIL"
+0x1c4 unsigned long EFI memory descriptor size
+0x1c8 unsigned long EFI memory descriptor version
+0x1cc unsigned long EFI memory descriptor map size
+0x1d0 8 bytes EFI memory descriptor map pointer
+0x1d8 8 bytes EFI system table pointer
Index: linux-2.6.23-rc2/Documentation/x86_64/boot-options.txt
===================================================================
--- linux-2.6.23-rc2.orig/Documentation/x86_64/boot-options.txt 2007-08-13 13:08:39.000000000 +0800
+++ linux-2.6.23-rc2/Documentation/x86_64/boot-options.txt 2007-08-13 13:08:53.000000000 +0800
@@ -110,12 +110,13 @@
Rebooting
- reboot=b[ios] | t[riple] | k[bd] [, [w]arm | [c]old]
+ reboot=b[ios] | t[riple] | k[bd] | e[fi] [, [w]arm | [c]old]
bios Use the CPU reboot vector for warm reset
warm Don't set the cold reboot flag
cold Set the cold reboot flag
triple Force a triple fault (init)
kbd Use the keyboard controller. cold reset (default)
+ efi Use efi reset_system runtime service. cold reset (default)
Using warm reset will be much faster especially on big memory
systems because the BIOS will not go through the memory check.
@@ -300,4 +301,11 @@
newfallback: use new unwinder but fall back to old if it gets
stuck (default)
+EFI
+
+ noefi Disable EFI support
+
+ noefi_time Disable EFI time runtime service, programming CMOS
+ hardware directly
+
Miscellaneous
-
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