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3 Commits

Author SHA1 Message Date
oliviermartin 8fc38a3f50 ArmPlatformPkg: Introduce ArmPlatformGlobalVariableLib 
This library hides where the 'XIP' Global Variable are located in the memory.
It is expected the Sec/PrePi modules define the Global Variable area through
the GlobalVariable HOB.

The ArmPlatformGlobalVariableLib library allows access to global variables by
their offsets in this region.




git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12420 6f19259b-4bc3-4df7-8a09-765794883524
 2011-09-22 23:11:03 +00:00
oliviermartin e1808603dc ArmPlatformPkg/PrePiHobListPointerLib: Fixed pointer calculation 
In the PrePi module, the global variables are located at the top of the stack.
At the opposite of the PeiCore where the global variables are located in the
middle of the stack. The top stack region is reserved for Temporary Memory.



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12167 6f19259b-4bc3-4df7-8a09-765794883524
 2011-08-18 11:23:28 +00:00
oliviermartin 3c4b742c18 ArmPlatformPkg/PrePiHobListPointerLib: Get the HobListPointer from the stop of the stack 
When using ArmPlatformPkg/PrePeiCore or ArmPlatformPkg/PrePi, the global variable during
the XIP phase are stored on the top of the stack.
Global variables are defined by their PCD offset from the top of this stack.

For example, the HobListPtr is defined at the offset PcdHobListPtrGlobalOffset.



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11958 6f19259b-4bc3-4df7-8a09-765794883524
 2011-07-01 15:45:52 +00:00