diff options
Diffstat (limited to 'arch/x86/kernel/platform-quirks.c')
| -rw-r--r-- | arch/x86/kernel/platform-quirks.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/arch/x86/kernel/platform-quirks.c b/arch/x86/kernel/platform-quirks.c new file mode 100644 index 000000000..b348a672f --- /dev/null +++ b/arch/x86/kernel/platform-quirks.c @@ -0,0 +1,46 @@ +// 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(); +} + +bool __init x86_pnpbios_disabled(void) +{ + return x86_platform.legacy.devices.pnpbios == 0; +} + +#if defined(CONFIG_PNPBIOS) +bool __init arch_pnpbios_disabled(void) +{ + return x86_pnpbios_disabled(); +} +#endif |