mirror of
https://github.com/torvalds/linux.git
synced 2024-12-12 14:12:51 +00:00
e348caef8b
Allow to turn off the setup of BIOS-managed warm reset via a new flag in x86_legacy_features. Besides the UV1, the upcoming jailhose guest support needs this switched off. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: jailhouse-dev@googlegroups.com Link: https://lkml.kernel.org/r/44376558129d70a2c1527959811371ef4b82e829.1511770314.git.jan.kiszka@siemens.com
42 lines
1.0 KiB
C
42 lines
1.0 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
|
|
#include <asm/setup.h>
|
|
#include <asm/bios_ebda.h>
|
|
|
|
void __init x86_early_init_platform_quirks(void)
|
|
{
|
|
x86_platform.legacy.i8042 = X86_LEGACY_I8042_EXPECTED_PRESENT;
|
|
x86_platform.legacy.rtc = 1;
|
|
x86_platform.legacy.warm_reset = 1;
|
|
x86_platform.legacy.reserve_bios_regions = 0;
|
|
x86_platform.legacy.devices.pnpbios = 1;
|
|
|
|
switch (boot_params.hdr.hardware_subarch) {
|
|
case X86_SUBARCH_PC:
|
|
x86_platform.legacy.reserve_bios_regions = 1;
|
|
break;
|
|
case X86_SUBARCH_XEN:
|
|
x86_platform.legacy.devices.pnpbios = 0;
|
|
x86_platform.legacy.rtc = 0;
|
|
break;
|
|
case X86_SUBARCH_INTEL_MID:
|
|
case X86_SUBARCH_CE4100:
|
|
x86_platform.legacy.devices.pnpbios = 0;
|
|
x86_platform.legacy.rtc = 0;
|
|
x86_platform.legacy.i8042 = X86_LEGACY_I8042_PLATFORM_ABSENT;
|
|
break;
|
|
}
|
|
|
|
if (x86_platform.set_legacy_features)
|
|
x86_platform.set_legacy_features();
|
|
}
|
|
|
|
#if defined(CONFIG_PNPBIOS)
|
|
bool __init arch_pnpbios_disabled(void)
|
|
{
|
|
return x86_platform.legacy.devices.pnpbios == 0;
|
|
}
|
|
#endif
|