1 // SPDX-License-Identifier: GPL-2.0 2 #include <linux/kernel.h> 3 #include <linux/init.h> 4 5 #include <asm/setup.h> 6 #include <asm/bios_ebda.h> 7 8 void __init x86_early_init_platform_quirks(void) 9 { 10 x86_platform.legacy.i8042 = X86_LEGACY_I8042_EXPECTED_PRESENT; 11 x86_platform.legacy.rtc = 1; 12 x86_platform.legacy.warm_reset = 1; 13 x86_platform.legacy.reserve_bios_regions = 0; 14 x86_platform.legacy.devices.pnpbios = 1; 15 16 switch (boot_params.hdr.hardware_subarch) { 17 case X86_SUBARCH_PC: 18 x86_platform.legacy.reserve_bios_regions = 1; 19 break; 20 case X86_SUBARCH_XEN: 21 x86_platform.legacy.devices.pnpbios = 0; 22 x86_platform.legacy.rtc = 0; 23 break; 24 case X86_SUBARCH_INTEL_MID: 25 case X86_SUBARCH_CE4100: 26 x86_platform.legacy.devices.pnpbios = 0; 27 x86_platform.legacy.rtc = 0; 28 x86_platform.legacy.i8042 = X86_LEGACY_I8042_PLATFORM_ABSENT; 29 break; 30 } 31 32 if (x86_platform.set_legacy_features) 33 x86_platform.set_legacy_features(); 34 } 35 36 bool __init x86_pnpbios_disabled(void) 37 { 38 return x86_platform.legacy.devices.pnpbios == 0; 39 } 40 41 #if defined(CONFIG_PNPBIOS) 42 bool __init arch_pnpbios_disabled(void) 43 { 44 return x86_pnpbios_disabled(); 45 } 46 #endif 47