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| author | Siyuan Fu <siyuan.fu@intel.com> | 2020-01-08 11:22:30 +0800 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2020-01-10 06:20:42 +0000 |
| commit | dd01704111c6e85b7bca62968d48abc2c626a3c6 (patch) | |
| tree | 3875ec78c3ee17921feac2cccbea986cf2daa11f /UefiCpuPkg/Library/MpInitLib/MpLib.c | |
| parent | c7c964b10999895685c3bcf844e5b7261af05619 (diff) | |
| download | edk2-dd01704111c6e85b7bca62968d48abc2c626a3c6.tar.gz edk2-dd01704111c6e85b7bca62968d48abc2c626a3c6.tar.bz2 edk2-dd01704111c6e85b7bca62968d48abc2c626a3c6.zip | |
UefiCpuPkg: Shadow microcode patch according to FIT microcode entry.
The existing MpInitLib will shadow the microcode update patches from
flash to memory and this is done by searching microcode region specified
by PCD PcdCpuMicrocodePatchAddress and PcdCpuMicrocodePatchRegionSize.
This brings a limition to platform FW that all the microcode patches must
be placed in one continuous flash space.
This patch shadows microcode update according to FIT microcode entries if
it's present, otherwise it will fallback to original logic (by PCD).
A new featured PCD gUefiCpuPkgTokenSpaceGuid.PcdCpuShadowMicrocodeByFit
is added for enabling/disabling this support.
TEST: Tested on FIT enabled platform.
BZ: https://tianocore.acgmultimedia.com/show_bug.cgi?id=2449
Cc: Eric Dong <eric.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Siyuan Fu <siyuan.fu@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Diffstat (limited to 'UefiCpuPkg/Library/MpInitLib/MpLib.c')
| -rw-r--r-- | UefiCpuPkg/Library/MpInitLib/MpLib.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/UefiCpuPkg/Library/MpInitLib/MpLib.c b/UefiCpuPkg/Library/MpInitLib/MpLib.c index e611a8ca40..6ec9b172b8 100644 --- a/UefiCpuPkg/Library/MpInitLib/MpLib.c +++ b/UefiCpuPkg/Library/MpInitLib/MpLib.c @@ -1,7 +1,7 @@ /** @file
CPU MP Initialize Library common functions.
- Copyright (c) 2016 - 2019, Intel Corporation. All rights reserved.<BR>
+ Copyright (c) 2016 - 2020, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
@@ -1744,7 +1744,7 @@ MpInitLibInitialize ( //
// Load required microcode patches data into memory
//
- LoadMicrocodePatch (CpuMpData);
+ ShadowMicrocodeUpdatePatch (CpuMpData);
} else {
//
// APs have been wakeup before, just get the CPU Information
|