1b2441318SGreg Kroah-Hartman // SPDX-License-Identifier: GPL-2.0 28d152e7aSLuis R. Rodriguez #include <linux/kernel.h> 38d152e7aSLuis R. Rodriguez #include <linux/init.h> 48d152e7aSLuis R. Rodriguez 58d152e7aSLuis R. Rodriguez #include <asm/setup.h> 68d152e7aSLuis R. Rodriguez #include <asm/bios_ebda.h> 78d152e7aSLuis R. Rodriguez 88d152e7aSLuis R. Rodriguez void __init x86_early_init_platform_quirks(void) 98d152e7aSLuis R. Rodriguez { 1093ffa9a4SDmitry Torokhov x86_platform.legacy.i8042 = X86_LEGACY_I8042_EXPECTED_PRESENT; 118d152e7aSLuis R. Rodriguez x86_platform.legacy.rtc = 1; 12e348caefSJan Kiszka x86_platform.legacy.warm_reset = 1; 13edce2121SIngo Molnar x86_platform.legacy.reserve_bios_regions = 0; 1480dfd83dSLuis R. Rodriguez x86_platform.legacy.devices.pnpbios = 1; 158d152e7aSLuis R. Rodriguez 168d152e7aSLuis R. Rodriguez switch (boot_params.hdr.hardware_subarch) { 171330e3bcSLuis R. Rodriguez case X86_SUBARCH_PC: 18edce2121SIngo Molnar x86_platform.legacy.reserve_bios_regions = 1; 191330e3bcSLuis R. Rodriguez break; 208d152e7aSLuis R. Rodriguez case X86_SUBARCH_XEN: 2193ffa9a4SDmitry Torokhov x86_platform.legacy.devices.pnpbios = 0; 2293ffa9a4SDmitry Torokhov x86_platform.legacy.rtc = 0; 2393ffa9a4SDmitry Torokhov break; 248d152e7aSLuis R. Rodriguez case X86_SUBARCH_INTEL_MID: 25a50b22a7SLuis R. Rodriguez case X86_SUBARCH_CE4100: 26f6935b7bSLuis R. Rodriguez x86_platform.legacy.devices.pnpbios = 0; 278d152e7aSLuis R. Rodriguez x86_platform.legacy.rtc = 0; 2893ffa9a4SDmitry Torokhov x86_platform.legacy.i8042 = X86_LEGACY_I8042_PLATFORM_ABSENT; 298d152e7aSLuis R. Rodriguez break; 308d152e7aSLuis R. Rodriguez } 318d152e7aSLuis R. Rodriguez 328d152e7aSLuis R. Rodriguez if (x86_platform.set_legacy_features) 338d152e7aSLuis R. Rodriguez x86_platform.set_legacy_features(); 348d152e7aSLuis R. Rodriguez } 3580dfd83dSLuis R. Rodriguez 3680dfd83dSLuis R. Rodriguez #if defined(CONFIG_PNPBIOS) 3780dfd83dSLuis R. Rodriguez bool __init arch_pnpbios_disabled(void) 3880dfd83dSLuis R. Rodriguez { 3980dfd83dSLuis R. Rodriguez return x86_platform.legacy.devices.pnpbios == 0; 4080dfd83dSLuis R. Rodriguez } 4180dfd83dSLuis R. Rodriguez #endif 42