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| author | Yazen Ghannam <yazen.ghannam@amd.com> | 2018-05-04 07:59:50 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2018-05-14 08:57:47 +0200 |
| commit | f9e1bdb9f35f4f5cfa7c9025ac68c02909b6d3b1 (patch) | |
| tree | 0d2dcf6dc509a8460df02e543efea941f65d15e7 /drivers/firmware | |
| parent | 742632d237ce180439ab4af31e9891df0df81233 (diff) | |
| download | linux-next-f9e1bdb9f35f4f5cfa7c9025ac68c02909b6d3b1.tar.gz | |
efi: Decode IA32/X64 Processor Error Section
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 <yazen.ghannam@amd.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/20180504060003.19618-5-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/firmware')
| -rw-r--r-- | drivers/firmware/efi/Kconfig | 5 | ||||
| -rw-r--r-- | drivers/firmware/efi/Makefile | 1 | ||||
| -rw-r--r-- | drivers/firmware/efi/cper-x86.c | 23 | ||||
| -rw-r--r-- | drivers/firmware/efi/cper.c | 10 |
4 files changed, 39 insertions, 0 deletions
diff --git a/drivers/firmware/efi/Kconfig b/drivers/firmware/efi/Kconfig index 3098410abad8..781a4a337557 100644 --- a/drivers/firmware/efi/Kconfig +++ b/drivers/firmware/efi/Kconfig @@ -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 diff --git a/drivers/firmware/efi/Makefile b/drivers/firmware/efi/Makefile index cb805374f4bc..5f9f5039de50 100644 --- a/drivers/firmware/efi/Makefile +++ b/drivers/firmware/efi/Makefile @@ -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 diff --git a/drivers/firmware/efi/cper-x86.c b/drivers/firmware/efi/cper-x86.c new file mode 100644 index 000000000000..863f0cd2a0ff --- /dev/null +++ b/drivers/firmware/efi/cper-x86.c @@ -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); + } +} diff --git a/drivers/firmware/efi/cper.c b/drivers/firmware/efi/cper.c index ab21f1614007..3bf0dca378a6 100644 --- a/drivers/firmware/efi/cper.c +++ b/drivers/firmware/efi/cper.c @@ -468,6 +468,16 @@ cper_estatus_print_section(const char *pfx, struct acpi_hest_generic_data *gdata 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); |