diff options
Diffstat (limited to 'ArmPkg/Library/ArmLib/Arm9/Arm9Support.S')
| -rw-r--r-- | ArmPkg/Library/ArmLib/Arm9/Arm9Support.S | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/ArmPkg/Library/ArmLib/Arm9/Arm9Support.S b/ArmPkg/Library/ArmLib/Arm9/Arm9Support.S index 5c9afe9347..d76afb90f5 100644 --- a/ArmPkg/Library/ArmLib/Arm9/Arm9Support.S +++ b/ArmPkg/Library/ArmLib/Arm9/Arm9Support.S @@ -23,6 +23,7 @@ .globl ASM_PFX(ArmCleanInvalidateDataCacheEntryByMVA) .globl ASM_PFX(ArmEnableMmu) .globl ASM_PFX(ArmDisableMmu) +.globl ASM_PFX(ArmMmuEnabled) .globl ASM_PFX(ArmEnableDataCache) .globl ASM_PFX(ArmDisableDataCache) .globl ASM_PFX(ArmEnableInstructionCache) @@ -75,6 +76,11 @@ ASM_PFX(ArmEnableMmu): mcr p15,0,R0,c1,c0,0 bx LR +ASM_PFX(ArmMmuEnabled): + mrc p15,0,R0,c1,c0,0 + and R0,R0,#1 + bx LR + ASM_PFX(ArmDisableMmu): mrc p15,0,R0,c1,c0,0 bic R0,R0,#1 |