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| author | oliviermartin <oliviermartin@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-06-03 09:25:01 +0000 |
|---|---|---|
| committer | oliviermartin <oliviermartin@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-06-03 09:25:01 +0000 |
| commit | f0fef790ff6a55997035af8727cc2f3fbd39afbf (patch) | |
| tree | 67519f2d8577e116c7213bc893ddc5e9198ddecd /ArmPkg/Drivers/CpuDxe | |
| parent | e7f7105ba0d231bf3176a2b7f1d82cf9cead5e34 (diff) | |
| download | edk2-f0fef790ff6a55997035af8727cc2f3fbd39afbf.tar.gz edk2-f0fef790ff6a55997035af8727cc2f3fbd39afbf.tar.bz2 edk2-f0fef790ff6a55997035af8727cc2f3fbd39afbf.zip | |
ArmPkg: Introduce ArmSetLowVectors/ArmSetHighVectors functions
These functions set/clear the SCTLR.V bit that controls the location
of the Vector Table.
This commit also forces the SCTLR.V to be clear when the VBAR register
is set.
Note: The original fix has been proposed by Eugene Cohen (HP).
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11739 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'ArmPkg/Drivers/CpuDxe')
| -rw-r--r-- | ArmPkg/Drivers/CpuDxe/Exception.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/ArmPkg/Drivers/CpuDxe/Exception.c b/ArmPkg/Drivers/CpuDxe/Exception.c index 17e463f97b..659b7137e1 100644 --- a/ArmPkg/Drivers/CpuDxe/Exception.c +++ b/ArmPkg/Drivers/CpuDxe/Exception.c @@ -149,6 +149,14 @@ InitializeExceptions ( //
Length = (UINTN)ExceptionHandlersEnd - (UINTN)ExceptionHandlersStart;
+ // Check if the exception vector is in the low address
+ if (PcdGet32 (PcdCpuVectorBaseAddress) == 0x0) {
+ // Set SCTLR.V to 0 to enable VBAR to be used
+ ArmSetLowVectors ();
+ } else {
+ ArmSetHighVectors ();
+ }
+
//
// Reserve space for the exception handlers
//
|