Re: [PATCH 5/6] efi/cper: align ARM CPER type with UEFI 2.9A/2.10 specs

[Jonathan Cameron <Jonathan.Cameron@Huawei.com>]

On Mon,  8 Jul 2024 13:18:14 +0200
Mauro Carvalho Chehab <mchehab+huawei@kernel.org> wrote:

> Up to UEFI spec, the type byte of CPER struct for ARM processor was

Up to UEFI spec XXX?

> defined simply as:
> 
> Type at byte offset 4:
> 
> 	- Cache error
> 	- TLB Error
> 	- Bus Error
> 	- Micro-architectural Error
> 	All other values are reserved
> 
> Yet, there was no information about how this would be encoded.
> 
> Spec 2.9A errata corrected it by defining:
> 
> 	- Bit 1 - Cache Error
> 	- Bit 2 - TLB Error
> 	- Bit 3 - Bus Error
> 	- Bit 4 - Micro-architectural Error
> 	All other values are reserved
> 
> That actually aligns with the values already defined on older
> versions at N.2.4.1. Generic Processor Error Section.
> 
> Spec 2.10 also preserve the same encoding as 2.9A
> 
> Adjust CPER and GHES handling code for both generic and ARM
> processors to properly handle UEFI 2.9A and 2.10 encoding.
> 
> Link: https://uefi.org/specs/UEFI/2.10/Apx_N_Common_Platform_Error_Record.html#arm-processor-error-information
> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

With above tidied up.

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>