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SubjectRe: [PATCH v2,RESEND] MIPS: Scan the DMI system information
Hi Tiezhun,

On Mon, 3 Feb 2020 16:32:03 +0800, Tiezhu Yang wrote:
> On 1/16/20 9:26 PM, Tiezhu Yang wrote:
> > Enable DMI scanning on the MIPS architecture, this setups DMI identifiers
> > (dmi_system_id) for printing it out on task dumps and prepares DIMM entry
> > information (dmi_memdev_info) from the SMBIOS table. With this patch, the
> > driver can easily match various of mainboards.
> >
> > In the SMBIOS reference specification, the table anchor string "_SM_" is
> > present in the address range 0xF0000 to 0xFFFFF on a 16-byte boundary,
> > but there exists a special case for Loongson platform, when call function
> > dmi_early_remap, it should specify the start address to 0xFFFE000 due to
> > it is reserved for SMBIOS and can be normally access in the BIOS.
> >
> > This patch works fine on the Loongson 3A3000 platform which belongs to
> > MIPS architecture and has no influence on the other architectures such
> > as x86 and ARM.
> >
> > Co-developed-by: Yinglu Yang <yangyinglu@loongson.cn>
> > Signed-off-by: Yinglu Yang <yangyinglu@loongson.cn>
> > [jiaxun.yang@flygoat.com: Refine definitions and Kconfig]
> > Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
> > Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
> > Reviewed-by: Huacai Chen <chenhc@lemote.com>
> > ---
> >
> > v2:
> > - add SMBIOS_ENTRY_POINT_SCAN_START suggested by Jean
> > - refine definitions and Kconfig by Jiaxun
> >
> > arch/mips/Kconfig | 10 ++++++++++
> > arch/mips/include/asm/dmi.h | 20 ++++++++++++++++++++
> > arch/mips/kernel/setup.c | 2 ++
> > drivers/firmware/dmi_scan.c | 6 +++++-
> > 4 files changed, 37 insertions(+), 1 deletion(-)
> > create mode 100644 arch/mips/include/asm/dmi.h
>
>
> Hi Paul and Jean,
>
> How do you think this patch?

Looks good to me and you can add:

Reviewed-by: Jean Delvare <jdelvare@suse.de>

for the dmi subsystem part.

>
> Should I split it into the following two patches?
> [PATCH v3 1/2] firmware: dmi: Add macro SMBIOS_ENTRY_POINT_SCAN_START
> [PATCH v3 2/2] MIPS: Add support for Desktop Management Interface (DMI)
>
> The first patch is only related with the common dmi code
> drivers/firmware/dmi_scan.c, the other patch is only related
> with the mips code under arch/mips.
>
> If you have any questions or suggestions, please let me know.
> I am looking forward to your early reply.

I'm fine either way. I you do not split it, as most changes are in the
mips arch files and I do not expect any conflict in the dmi subsystem
part, I believe that the patch should be merged by the mips arch
maintainer.

Thanks,
--
Jean Delvare
SUSE L3 Support

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