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efi: dmi: add support for SMBIOS 3.0 UEFI configuration table

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This adds support to the UEFI side for detecting the presence of
a SMBIOS 3.0 64-bit entry point. This allows the actual SMBIOS
structure table to reside at a physical offset over 4 GB, which
cannot be supported by the legacy SMBIOS 32-bit entry point.

Since the firmware can legally provide both entry points, store
the SMBIOS 3.0 entry point in a separate variable, and let the
DMI decoding layer decide which one will be used.

Tested-by: Suravee Suthikulpanit <[email protected]>
Acked-by: Leif Lindholm <[email protected]>
Acked-by: Matt Fleming <[email protected]>
Signed-off-by: Ard Biesheuvel <[email protected]>
This commit is contained in:
Ard Biesheuvel 2014-10-14 16:34:47 +02:00
commit e1ccbbc9d5
3 changed files with 10 additions and 1 deletions
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1
drivers/xen/efi.c
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@ -294,6 +294,7 @@ static const struct efi efi_xen __initconst = {
.acpi = EFI_INVALID_TABLE_ADDR,
.acpi20 = EFI_INVALID_TABLE_ADDR,
.smbios = EFI_INVALID_TABLE_ADDR,
.smbios3 = EFI_INVALID_TABLE_ADDR,
.sal_systab = EFI_INVALID_TABLE_ADDR,
.boot_info = EFI_INVALID_TABLE_ADDR,
.hcdp = EFI_INVALID_TABLE_ADDR,