LXR linux/arch/x86/kernel/platform-quirks.c

   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
   8void __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
  36bool __init x86_pnpbios_disabled(void)
  37{
  38        return x86_platform.legacy.devices.pnpbios == 0;
  39}
  40
  41#if defined(CONFIG_PNPBIOS)
  42bool __init arch_pnpbios_disabled(void)
  43{
  44        return x86_pnpbios_disabled();
  45}
  46#endif
  47