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| author | lzeng14 <lzeng14@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-12-06 01:15:40 +0000 |
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| committer | lzeng14 <lzeng14@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-12-06 01:15:40 +0000 |
| commit | 3aa764ed7477d45ee78c7080c9f7624e62d10346 (patch) | |
| tree | f8486c0384f69850293aa2c91be5222e5b0c8072 /MdeModulePkg/MdeModulePkg.dec | |
| parent | edae8d2dbda4d355d98df57b7d1952a5c3ebeacd (diff) | |
| download | edk2-platforms-3aa764ed7477d45ee78c7080c9f7624e62d10346.tar.xz | |
Multi-SMM drivers couldn't save their boot script successfully all at runtime in SMM, one module's boot script will overwrite another module's.
Allocate a SMM copy for private data structure, and use a new PCD PcdS3BootScriptTablePrivateSmmDataPtr to transfer and share data between multi-SMM drivers.
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13984 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdeModulePkg/MdeModulePkg.dec')
| -rw-r--r-- | MdeModulePkg/MdeModulePkg.dec | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/MdeModulePkg/MdeModulePkg.dec b/MdeModulePkg/MdeModulePkg.dec index d3d1a299b4..710e3e6a04 100644 --- a/MdeModulePkg/MdeModulePkg.dec +++ b/MdeModulePkg/MdeModulePkg.dec @@ -852,3 +852,9 @@ # default value is set to Zero. And the PCD is assumed ONLY to be accessed in DxeS3BootScriptLib Library.
gEfiMdeModulePkgTokenSpaceGuid.PcdS3BootScriptTablePrivateDataPtr|0x0|UINT64|0x00030000
+ ## This dynamic PCD hold an address to point to private data structure SMM copy used in DxeS3BootScriptLib library
+ # instance which records the S3 boot script table start address, length, etc. To introduce this PCD is
+ # only for DxeS3BootScriptLib instance implementation purpose. The platform developer should make sure the
+ # default value is set to Zero. And the PCD is assumed ONLY to be accessed in DxeS3BootScriptLib Library.
+ gEfiMdeModulePkgTokenSpaceGuid.PcdS3BootScriptTablePrivateSmmDataPtr|0x0|UINT64|0x00030001
+
|