[RFC 0/5] riscv: initial support for Generic Hardware Error Source (GHES)

[Rui Qi]

From: Rui Qi <qirui.001@xxxxxxxxxxxxx>

NOTE: Before compiling the kernel, enable ACPI, APEI and GHES in menuconfig
The following options must be enabled in .config file.
   CONFIG_HAVE_ACPI_APEI=y
   CONFIG_ACPI_APEI=y
   CONFIG_ACPI_APEI_GHES=y

Through fault injection, we can see the following example output

[Hardware Error]: Hardware error from APEI Generic Hardware Error Source: 0
[Hardware Error]: event severity info
[Hardware Error]: Error 0, type: corrected
[Hardware Error]:  section_type: memory error
[Hardware Error]:   error_status: Storage error in DRAM memory (0x018d8480019304f0)
[Hardware Error]:  node:0 card:0 module:0 rank:0 bank:0 device:0 row:0 column:0
[Hardware Error]:  error_type: 2, single-bit ECC
[Hardware Error]: Error 1, type: corrected
[Hardware Error]:  section_type: Flle error
[Hardware Error]:  port_type: 4, root port
[Hardware Error]:  version: 3.0
[Hardware Error]:  command: 0x0146, status: 0x0011
[Hardware Error]:  device_id: 0000:00:00,0
[Hardware Error]:  slot: 0
[Hardware Error]:  secondary_bus: 0x01
[Hardware Error]:  vendor_id: 0x1e93, device_id: 0x1010
[Hardware Error]:  class_code: 060400
[Hardware Error]:  bridge: secondary_status: 0x0000, control: 0x0003
[Hardware Error]:  aer_cor_status: 0x00001000, aer_cor_mask: 0x0000000
[Hardware Error]:  aer_uncor_status: 0x00000000, aer_uncor_mask: 0x04000000
[Hardware Error]:  aer_uncor_severity: 0x004e3030
[Hardware Error]:  TLP Header: 000000000 000000000 0000000000000000


Rui Qi (5):
  riscv: select HAVE_ACPI_APEI
  efi: add riscv APEI generic processor error printing support
  riscv: add fix map index for GHES IRQ
  RISC-V: ACPI: define arch_apei_get_mem_attribute
  RISC-V: define ioremap_cache

 arch/riscv/Kconfig              |  1 +
 arch/riscv/include/asm/acpi.h   | 18 ++++++++++++++++++
 arch/riscv/include/asm/fixmap.h |  3 +++
 arch/riscv/include/asm/io.h     |  5 +++++
 drivers/firmware/efi/cper.c     |  4 ++++
 5 files changed, 31 insertions(+)

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2.20.1