Re: [PATCH 0/4] x86: UV runtime bios calls

[Huang Ying <ying.huang@intel.com>]

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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 http://www.uefi.org/.

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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