From: Fu Wei fu.wei@linaro.org
ACPI/APEI is designed to verifiy/report H/W errors, like Corrected Error(CE) and Uncorrected Error(UC). It contains four tables: HEST, ERST, EINJ and BERT. The first three tables have been merged for a long time, but because of lacking BIOS support for BERT, the support for BERT is pending until now. Recently on ARM 64 platform it is has been supported. So here we come.
The following log is a BERT record after system reboot because of hitting a fatal error.
BERT: Obtained BERT iomem region <00000000fe801000-00000000fe802000> for BERT. [Hardware Error]: Error record from previous boot: [Hardware Error]: event severity: fatal [Hardware Error]: Error 0, type: fatal [Hardware Error]: section_type: memory error [Hardware Error]: physical_address: 0x00000000fe800000 [Hardware Error]: physical_address_mask: 0x0000000000000fff [Hardware Error]: card: 0 module: 1 bank: 0 device: 1 row: 1 column: 1 bit_pos
Changelog: v2: Delete EXPORT_SYMBOL_GPL(bert_disable), because "bert_disable" is only used in bert.c for now. Do some code-style cleanups.
v1: The first upstream version submitted in linux-acpi mailing list: http://www.spinics.net/lists/linux-acpi/msg57384.html
Huang Ying (1): ACPI, APEI, Boot Error Record Table (BERT) support
Tomasz Nowicki (1): acpi, apei, bert: Clear error status at the end of error handling
Documentation/kernel-parameters.txt | 3 + drivers/acpi/apei/Makefile | 2 +- drivers/acpi/apei/bert.c | 165 ++++++++++++++++++++++++++++++++++++ include/acpi/apei.h | 1 + 4 files changed, 170 insertions(+), 1 deletion(-) create mode 100644 drivers/acpi/apei/bert.c