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Added FIQ interrupt primatives. Update exception handler to disable/reenable FIQ when updating in case debug agent library is using FIQ.

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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10197 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
andrewfish
2010-03-05 02:15:41 +00:00
parent 41d478023f
commit 0416278cfd
6 changed files with 118 additions and 4 deletions
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25
ArmPkg/Library/ArmLib/Common/ArmLibSupport.asm
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@@ -18,6 +18,9 @@
EXPORT ArmEnableInterrupts
EXPORT ArmDisableInterrupts
EXPORT ArmGetInterruptState
EXPORT ArmEnableFiq
EXPORT ArmDisableFiq
EXPORT ArmGetFiqState
EXPORT ArmInvalidateTlb
EXPORT ArmSetTranslationTableBaseAddress
EXPORT ArmGetTranslationTableBaseAddress
@@ -56,6 +59,28 @@ ArmGetInterruptState
moveq R0,#1
movne R0,#0
bx LR
ArmEnableFiq
mrs R0,CPSR
bic R0,R0,#0x40 ;Enable IRQ interrupts
msr CPSR_c,R0
bx LR
ArmDisableFiq
mrs R0,CPSR
orr R1,R0,#0x40 ;Disable IRQ interrupts
msr CPSR_c,R1
tst R0,#0x40
moveq R0,#1
movne R0,#0
bx LR
ArmGetFiqState
mrs R0,CPSR
tst R0,#0x40 ;Check if IRQ is enabled.
moveq R0,#1
movne R0,#0
bx LR
ArmInvalidateTlb
mov r0,#0