arch/x86/kernel/platform-quirks.c

   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.rtc = 1;
  10         x86_platform.legacy.reserve_bios_regions = 0;
  11         x86_platform.legacy.devices.pnpbios = 1;
  12
  13         switch (boot_params.hdr.hardware_subarch) {
  14         case X86_SUBARCH_PC:
  15                 x86_platform.legacy.reserve_bios_regions = 1;
  16                 break;
  17         case X86_SUBARCH_XEN:
  18         case X86_SUBARCH_LGUEST:
  19         case X86_SUBARCH_INTEL_MID:
  20         case X86_SUBARCH_CE4100:
  21                 x86_platform.legacy.devices.pnpbios = 0;
  22                 x86_platform.legacy.rtc = 0;
  23                 break;
  24         }
  25
  26         if (x86_platform.set_legacy_features)
  27                 x86_platform.set_legacy_features();
  28 }
  29
  30 #if defined(CONFIG_PNPBIOS)
  31 bool __init arch_pnpbios_disabled(void)
  32 {
  33         return x86_platform.legacy.devices.pnpbios == 0;
  34 }
  35 #endif