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Cleanup MMU code to do book required sync. Update exception handler to clear fault registers.

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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10366 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
andrewfish
2010-04-13 19:27:03 +00:00
parent 382127fc4c
commit bb02cb8071
8 changed files with 141 additions and 46 deletions
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6
ArmPkg/Drivers/CpuDxe/ExceptionSupport.ARMv6.asm
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@@ -254,6 +254,12 @@ CommonCExceptionHandler (
*/
blx CommonCExceptionHandler ; Call exception handler
ldr R1, [SP, #0x4c] ; Restore EFI_SYSTEM_CONTEXT_ARM.IFSR
mcr p15, 0, R1, c5, c0, 1 ; Write IFSR
ldr R1, [SP, #0x44] ; sRestore EFI_SYSTEM_CONTEXT_ARM.DFSR
mcr p15, 0, R1, c5, c0, 0 ; Write DFSR
ldr R1,[SP,#0x3c] ; EFI_SYSTEM_CONTEXT_ARM.PC
str R1,[SP,#0x58] ; Store it back to srsfd stack slot so it can be restored