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efi: Decode IA32/X64 Processor Error Section

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Recognize the IA32/X64 Processor Error Section.

Do the section decoding in a new "cper-x86.c" file and add this to the
Makefile depending on a new "UEFI_CPER_X86" config option.

Print the Local APIC ID and CPUID info from the Processor Error Record.

The "Processor Error Info" and "Processor Context" fields will be
decoded in following patches.

Based on UEFI 2.7 Table 252. Processor Error Record.

Signed-off-by: Yazen Ghannam <[email protected]>
Signed-off-by: Ard Biesheuvel <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Matt Fleming <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: [email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
This commit is contained in:
Yazen Ghannam 2018-05-04 07:59:50 +02:00 • committed by Ingo Molnar
commit f9e1bdb9f3
5 changed files with 41 additions and 0 deletions
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5
drivers/firmware/efi/Kconfig
View file

@ -174,6 +174,11 @@ config UEFI_CPER_ARM
depends on UEFI_CPER && ( ARM || ARM64 )
default y
config UEFI_CPER_X86
bool
depends on UEFI_CPER && X86
default y
config EFI_DEV_PATH_PARSER
bool
depends on ACPI

1
drivers/firmware/efi/Makefile
View file

@ -31,3 +31,4 @@ obj-$(CONFIG_ARM) += $(arm-obj-y)
obj-$(CONFIG_ARM64) += $(arm-obj-y)
obj-$(CONFIG_EFI_CAPSULE_LOADER) += capsule-loader.o
obj-$(CONFIG_UEFI_CPER_ARM) += cper-arm.o
obj-$(CONFIG_UEFI_CPER_X86) += cper-x86.o

23
drivers/firmware/efi/cper-x86.c Normal file
View file

@ -0,0 +1,23 @@
// SPDX-License-Identifier: GPL-2.0
// Copyright (C) 2018, Advanced Micro Devices, Inc.
#include <linux/cper.h>
/*
* We don't need a "CPER_IA" prefix since these are all locally defined.
* This will save us a lot of line space.
*/
#define VALID_LAPIC_ID BIT_ULL(0)
#define VALID_CPUID_INFO BIT_ULL(1)
void cper_print_proc_ia(const char *pfx, const struct cper_sec_proc_ia *proc)
{
if (proc->validation_bits & VALID_LAPIC_ID)
printk("%sLocal APIC_ID: 0x%llx\n", pfx, proc->lapic_id);
if (proc->validation_bits & VALID_CPUID_INFO) {
printk("%sCPUID Info:\n", pfx);
print_hex_dump(pfx, "", DUMP_PREFIX_OFFSET, 16, 4, proc->cpuid,
sizeof(proc->cpuid), 0);
}
}

10
drivers/firmware/efi/cper.c
View file

@ -467,6 +467,16 @@ cper_estatus_print_section(const char *pfx, struct acpi_hest_generic_data *gdata
cper_print_proc_arm(newpfx, arm_err);
else
goto err_section_too_small;
#endif
#if defined(CONFIG_UEFI_CPER_X86)
} else if (guid_equal(sec_type, &CPER_SEC_PROC_IA)) {
struct cper_sec_proc_ia *ia_err = acpi_hest_get_payload(gdata);
printk("%ssection_type: IA32/X64 processor error\n", newpfx);
if (gdata->error_data_length >= sizeof(*ia_err))
cper_print_proc_ia(newpfx, ia_err);
else
goto err_section_too_small;
#endif
} else {
const void *err = acpi_hest_get_payload(gdata);