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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.

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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
This commit is contained in:
lzeng14
2012-12-06 01:15:40 +00:00
parent edae8d2dbd
commit 3aa764ed74
3 changed files with 38 additions and 9 deletions
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6
MdeModulePkg/MdeModulePkg.dec
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@ -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