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efi: Enable CMOS on x86 EFI platforms

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The CMOS actually exists on most EFI platforms and in some cases is used to
store useful data that makes it justifiable for GRUB to read/write it.

As for date and time keep using EFI API and not CMOS one.

Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
This commit is contained in:
Vladimir 'phcoder' Serbinenko 2024-03-15 22:35:07 +03:00 committed by Daniel Kiper
parent aa80270154
commit 52e039e00b
3 changed files with 8 additions and 3 deletions
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4
grub-core/Makefile.core.def
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@ -714,12 +714,16 @@ module = {
name = cmostest;
common = commands/i386/cmostest.c;
enable = cmos;
enable = i386_efi;
enable = x86_64_efi;
};
module = {
name = cmosdump;
common = commands/i386/cmosdump.c;
enable = cmos;
enable = i386_efi;
enable = x86_64_efi;
};
module = {

6
grub-core/commands/i386/cmostest.c
View File

@ -104,13 +104,13 @@ static grub_command_t cmd, cmd_clean, cmd_set;
GRUB_MOD_INIT(cmostest)
{
cmd = grub_register_command ("cmostest", grub_cmd_cmostest,
cmd = grub_register_command_lockdown ("cmostest", grub_cmd_cmostest,
N_("BYTE:BIT"),
N_("Test bit at BYTE:BIT in CMOS."));
cmd_clean = grub_register_command ("cmosclean", grub_cmd_cmosclean,
cmd_clean = grub_register_command_lockdown ("cmosclean", grub_cmd_cmosclean,
N_("BYTE:BIT"),
N_("Clear bit at BYTE:BIT in CMOS."));
cmd_set = grub_register_command ("cmosset", grub_cmd_cmosset,
cmd_set = grub_register_command_lockdown ("cmosset", grub_cmd_cmosset,
N_("BYTE:BIT"),
/* TRANSLATORS: A bit may be either set (1) or clear (0). */
N_("Set bit at BYTE:BIT in CMOS."));

1
include/grub/x86_64/cmos.h Normal file
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@ -0,0 +1 @@
#include <grub/i386/cmos.h>