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SubjectRe: [PATCH 0/4] x86: UV runtime bios calls
Hi, Russ,

This seems to include a extension to EFI runtime services. Why not also
discuss that on UEFI forum? You can get some information about UEFI
forum from

Best Regards,
Huang Ying

On Mon, 2008-09-22 at 16:06 -0500, Russ Anderson wrote:
> [PATCH 0/4] x86: UV runtime bios calls
> Purpose:
> Create an interface to allow calls into bios to return platform
> specific information. The interface uses EFI SAL table entry.
> EFI provides a mechanism for defining function pointers to
> firmware routines. This patchset builds on the EFI mechanism
> to provide access to those firmware routines.
> Patches:
> uv_efi_bios: Look for SAL entry in EFI tables.
> uv_bios_common: Add the EFI callback function using the EFI table
> entry. Create associated wrapper code. Initialize
> SAL system table entry info at boot time.
> uv_bios_call_partition: Add call to get partitioning related info.
> uv_sysfs: Create sysfs entrys in /sys/firmware/sgi_uv/ for
> partitioning related information.
> Implementation comments:
> This patch uses sal_systab. sal_systab is used on ia64, but was
> not used on x86. An alternative would be to create a new
> EFI entry type (uv_systab), though that would require adding
> to struct efi.
> The location in sysfs (/sys/firmware/sgi_uv/) is based on
> community feedback.
> If EFI is not configured (CONFIG_EFI), the calls will return -ENOSYS.
> If run on a system with a bios that does not supportes EFI SAL, the
> calls will return -ENOSYS.
> Paul Jackson assisted in the development of this code.
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