1 #include <linux/kernel.h> 2 #include <linux/init.h> 3 4 #include <asm/setup.h> 5 #include <asm/bios_ebda.h> 6 7 void __init x86_early_init_platform_quirks(void) 8 { 9 x86_platform.legacy.i8042 = X86_LEGACY_I8042_EXPECTED_PRESENT; 10 x86_platform.legacy.rtc = 1; 11 x86_platform.legacy.reserve_bios_regions = 0; 12 x86_platform.legacy.devices.pnpbios = 1; 13 14 switch (boot_params.hdr.hardware_subarch) { 15 case X86_SUBARCH_PC: 16 x86_platform.legacy.reserve_bios_regions = 1; 17 break; 18 case X86_SUBARCH_XEN: 19 x86_platform.legacy.devices.pnpbios = 0; 20 x86_platform.legacy.rtc = 0; 21 break; 22 case X86_SUBARCH_INTEL_MID: 23 case X86_SUBARCH_CE4100: 24 x86_platform.legacy.devices.pnpbios = 0; 25 x86_platform.legacy.rtc = 0; 26 x86_platform.legacy.i8042 = X86_LEGACY_I8042_PLATFORM_ABSENT; 27 break; 28 } 29 30 if (x86_platform.set_legacy_features) 31 x86_platform.set_legacy_features(); 32 } 33 34 #if defined(CONFIG_PNPBIOS) 35 bool __init arch_pnpbios_disabled(void) 36 { 37 return x86_platform.legacy.devices.pnpbios == 0; 38 } 39 #endif 40