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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/efi/cper-x86.c | |
| parent | 742632d237ce180439ab4af31e9891df0df81233 (diff) | |
| download | linux-f9e1bdb9f35f4f5cfa7c9025ac68c02909b6d3b1.tar.bz2 | |
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/efi/cper-x86.c')
| -rw-r--r-- | drivers/firmware/efi/cper-x86.c | 23 |
1 files changed, 23 insertions, 0 deletions
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); + } +} |