platform-quirks.c

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