linux-toradex.git/include/linux/cper.h, branch v6.4-rc1

EDAC/ghes: Unify CPER memory error location reporting

2022-04-08T09:31:18+00:00

Switch the GHES EDAC memory error reporting functions to use the common
CPER ones and get rid of code duplication.

  [ bp:
      - rewrite commit message, remove useless text
      - rip out useless reformatting
      - align function params on the opening brace
      - rename function to a more descriptive name
      - drop useless function exports
      - handle buffer lengths properly when printing other detail
      - remove useless casting
  ]

Signed-off-by: Shuai Xue 
Signed-off-by: Borislav Petkov 
Link: https://lore.kernel.org/r/20220308144053.49090-3-xueshuai@linux.alibaba.com

efi/cper: Add a cper_mem_err_status_str() to decode error description

2022-04-08T09:16:08+00:00

Introduce a new helper function cper_mem_err_status_str() to decode the
error status value into a human readable string.

  [ bp: Massage. ]

Signed-off-by: Shuai Xue 
Signed-off-by: Borislav Petkov 
Acked-by: Ard Biesheuvel 
Link: https://lore.kernel.org/r/20220308144053.49090-2-xueshuai@linux.alibaba.com

cper,edac,efi: Memory Error Record: bank group/address and chip id

2020-09-17T07:19:52+00:00

Updates to the UEFI 2.8 Memory Error Record allow splitting the bank field
into bank address and bank group, and using the last 3 bits of the extended
field as a chip identifier.

When needed, print correct version of bank field, bank group, and chip
identification.

Based on UEFI 2.8 Table 299. Memory Error Record.

Signed-off-by: Alex Kluver 
Reviewed-by: Russ Anderson 
Reviewed-by: Kyle Meyer 
Reviewed-by: Steve Wahl 
Acked-by: Borislav Petkov 
Link: https://lore.kernel.org/r/20200819143544.155096-3-alex.kluver@hpe.com
Signed-off-by: Ard Biesheuvel

edac,ghes,cper: Add Row Extension to Memory Error Record

2020-09-17T07:19:52+00:00

Memory errors could be printed with incorrect row values since the DIMM
size has outgrown the 16 bit row field in the CPER structure. UEFI
Specification Version 2.8 has increased the size of row by allowing it to
use the first 2 bits from a previously reserved space within the structure.

When needed, add the extension bits to the row value printed.

Based on UEFI 2.8 Table 299. Memory Error Record

Signed-off-by: Alex Kluver 
Tested-by: Russ Anderson 
Reviewed-by: Steve Wahl 
Reviewed-by: Kyle Meyer 
Acked-by: Borislav Petkov 
Link: https://lore.kernel.org/r/20200819143544.155096-2-alex.kluver@hpe.com
Signed-off-by: Ard Biesheuvel

efi: cper: Add support for printing Firmware Error Record Reference

2020-05-14T09:11:20+00:00

While debugging a boot failure, the following unknown error record was
seen in the boot logs.

    <...>
    BERT: Error records from previous boot:
    [Hardware Error]: event severity: fatal
    [Hardware Error]:  Error 0, type: fatal
    [Hardware Error]:   section type: unknown, 81212a96-09ed-4996-9471-8d729c8e69ed
    [Hardware Error]:   section length: 0x290
    [Hardware Error]:   00000000: 00000001 00000000 00000000 00020002  ................
    [Hardware Error]:   00000010: 00020002 0000001f 00000320 00000000  ........ .......
    [Hardware Error]:   00000020: 00000000 00000000 00000000 00000000  ................
    [Hardware Error]:   00000030: 00000000 00000000 00000000 00000000  ................
    <...>

On further investigation, it was found that the error record with
UUID (81212a96-09ed-4996-9471-8d729c8e69ed) has been defined in the
UEFI Specification at least since v2.4 and has recently had additional
fields defined in v2.7 Section N.2.10 Firmware Error Record Reference.

Add support for parsing and printing the defined fields to give users
a chance to figure out what went wrong.

Signed-off-by: Punit Agrawal 
Cc: Ard Biesheuvel 
Cc: "Rafael J. Wysocki" 
Cc: Borislav Petkov 
Cc: James Morse 
Cc: linux-acpi@vger.kernel.org
Cc: linux-efi@vger.kernel.org
Link: https://lore.kernel.org/r/20200512045502.3810339-1-punit1.agrawal@toshiba.co.jp
Signed-off-by: Ard Biesheuvel

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333

2019-06-05T15:37:06+00:00

Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation this program is
  distributed in the hope that it will be useful but without any
  warranty without even the implied warranty of merchantability or
  fitness for a particular purpose see the gnu general public license
  for more details you should have received a copy of the gnu general
  public license along with this program if not write to the free
  software foundation inc 59 temple place suite 330 boston ma 02111
  1307 usa

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 136 file(s).

Signed-off-by: Thomas Gleixner 
Reviewed-by: Alexios Zavras 
Reviewed-by: Allison Randal 
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190530000436.384967451@linutronix.de
Signed-off-by: Greg Kroah-Hartman

CPER: Remove unnecessary use of user-space types

2019-04-13T16:17:36+00:00

"__u32" and similar types are intended for things exported to user-space,
including structs used in ioctls; see include/uapi/asm-generic/int-l64.h.

They are not needed for the CPER struct definitions, which not exported to
user-space and not used in ioctls.  Replace them with the typical "u32" and
similar types.  No functional change intended.

The reason for changing this is to remove the question of "why do we use
__u32 here instead of u32?"  We should use __u32 when there's a reason for
it; otherwise, we should prefer u32 for consistency.

Reference: Documentation/process/coding-style.rst
Signed-off-by: Bjorn Helgaas 
CC: Masahiro Yamada 
CC: Greg Kroah-Hartman 
CC: Andrew Morton

CPER: Add UEFI spec references

2019-04-13T16:17:36+00:00

Add UEFI spec references for CPER UUIDs and structures, fix a few typos,
and remove some useless comments.  No functional change intended.

Link: http://www.uefi.org/specifications
Signed-off-by: Bjorn Helgaas

efi: Decode IA32/X64 Processor Error Section

2018-05-14T06:57:47+00:00

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 
Signed-off-by: Ard Biesheuvel 
Cc: Linus Torvalds 
Cc: Matt Fleming 
Cc: Peter Zijlstra 
Cc: Thomas Gleixner 
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/20180504060003.19618-5-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar

efi: Fix IA32/X64 Processor Error Record definition

2018-05-14T06:57:47+00:00

Based on UEFI 2.7 Table 255. Processor Error Record, the "Local APIC_ID"
field is 8 bytes but Linux defines this field as 1 byte.

Fix this in the struct cper_sec_proc_ia definition.

Signed-off-by: Yazen Ghannam 
Signed-off-by: Ard Biesheuvel 
Cc: Linus Torvalds 
Cc: Matt Fleming 
Cc: Peter Zijlstra 
Cc: Thomas Gleixner 
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/20180504060003.19618-4-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar