[PATCH 0/4] x86: UV runtime bios calls
Purpose:
Create an interface to allow calls into bios to return platform
specific information. The interface adds a new EFI runtime call
for OEMs. EFI provides a mechanism for defining runtime calls
to firmware routines. This patchset builds on the EFI mechanism
to provide access to those firmware routines.
Version 3 changes:
Add function (oem) to efi_runtime_services_t, replacing uv_systab.
Use efi_call_virt<n>.
Remove efi_call<n> stubs.
Version 2 changes:
Add uv_systab to efi struct.
Define efi_call* stubs in include/asm-x86/uv/bios.h.
Made symbols EXPORT_SYMBOL_GPL().
Added check for failure on sysfs_create_file() calls.
Other code style changes.
Patches:
uv_efi_bios: Add function (oem) to efi_runtime_services_t.
uv_bios_common: Add the EFI callback function using the EFI oem
runtime function. Create associated wrapper code.
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 adds a new EFI runtime function (oem).
The location in sysfs (/sys/firmware/sgi_uv/) is based on
community feedback. The interface is documented in
Documentation/ABI/testing/sysfs-firmware-sgi_uv.
If EFI is not configured (CONFIG_EFI), the calls will return -ENOSYS.
If run on a system with a bios that does not support EFI UV, the
calls will return -ENOSYS.
Paul Jackson assisted in the development of this code.
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Russ Anderson, OS RAS/Partitioning Project Lead
SGI - Silicon Graphics Inc rja@sgi.com
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