diff options
Diffstat (limited to 'ArmPkg')
| -rw-r--r-- | ArmPkg/Library/ArmLib/AArch64/ArmLibSupportV8.S | 32 | ||||
| -rw-r--r-- | ArmPkg/Library/ArmLib/Common/AArch64/ArmLibSupport.S | 16 |
2 files changed, 23 insertions, 25 deletions
diff --git a/ArmPkg/Library/ArmLib/AArch64/ArmLibSupportV8.S b/ArmPkg/Library/ArmLib/AArch64/ArmLibSupportV8.S index 8fd4194ab2..341bbce76c 100644 --- a/ArmPkg/Library/ArmLib/AArch64/ArmLibSupportV8.S +++ b/ArmPkg/Library/ArmLib/AArch64/ArmLibSupportV8.S @@ -35,12 +35,14 @@ GCC_ASM_EXPORT (ReadCLIDR) .set MPIDR_U_BIT, (30)
.set MPIDR_U_MASK, (1 << MPIDR_U_BIT)
-.set DAIF_FIQ_BIT, (1 << 0)
-.set DAIF_IRQ_BIT, (1 << 1)
-.set DAIF_ABORT_BIT, (1 << 2)
-.set DAIF_DEBUG_BIT, (1 << 3)
-.set DAIF_INT_BITS, (DAIF_FIQ_BIT | DAIF_IRQ_BIT)
-.set DAIF_ALL, (DAIF_DEBUG_BIT | DAIF_ABORT_BIT | DAIF_INT_BITS)
+
+// DAIF bit definitions for writing through msr daifclr/sr daifset
+.set DAIF_WR_FIQ_BIT, (1 << 0)
+.set DAIF_WR_IRQ_BIT, (1 << 1)
+.set DAIF_WR_ABORT_BIT, (1 << 2)
+.set DAIF_WR_DEBUG_BIT, (1 << 3)
+.set DAIF_WR_INT_BITS, (DAIF_WR_FIQ_BIT | DAIF_WR_IRQ_BIT)
+.set DAIF_WR_ALL, (DAIF_WR_DEBUG_BIT | DAIF_WR_ABORT_BIT | DAIF_WR_INT_BITS)
ASM_PFX(ArmIsMpCore):
@@ -52,55 +54,55 @@ ASM_PFX(ArmIsMpCore): ASM_PFX(ArmEnableAsynchronousAbort):
- msr daifclr, #DAIF_ABORT_BIT
+ msr daifclr, #DAIF_WR_ABORT_BIT
isb
ret
ASM_PFX(ArmDisableAsynchronousAbort):
- msr daifset, #DAIF_ABORT_BIT
+ msr daifset, #DAIF_WR_ABORT_BIT
isb
ret
ASM_PFX(ArmEnableIrq):
- msr daifclr, #DAIF_IRQ_BIT
+ msr daifclr, #DAIF_WR_IRQ_BIT
isb
ret
ASM_PFX(ArmDisableIrq):
- msr daifset, #DAIF_IRQ_BIT
+ msr daifset, #DAIF_WR_IRQ_BIT
isb
ret
ASM_PFX(ArmEnableFiq):
- msr daifclr, #DAIF_FIQ_BIT
+ msr daifclr, #DAIF_WR_FIQ_BIT
isb
ret
ASM_PFX(ArmDisableFiq):
- msr daifset, #DAIF_FIQ_BIT
+ msr daifset, #DAIF_WR_FIQ_BIT
isb
ret
ASM_PFX(ArmEnableInterrupts):
- msr daifclr, #DAIF_INT_BITS
+ msr daifclr, #DAIF_WR_INT_BITS
isb
ret
ASM_PFX(ArmDisableInterrupts):
- msr daifset, #DAIF_INT_BITS
+ msr daifset, #DAIF_WR_INT_BITS
isb
ret
ASM_PFX(ArmDisableAllExceptions):
- msr daifset, #DAIF_ALL
+ msr daifset, #DAIF_WR_ALL
isb
ret
diff --git a/ArmPkg/Library/ArmLib/Common/AArch64/ArmLibSupport.S b/ArmPkg/Library/ArmLib/Common/AArch64/ArmLibSupport.S index 50faef4ed0..a6fd5e3445 100644 --- a/ArmPkg/Library/ArmLib/Common/AArch64/ArmLibSupport.S +++ b/ArmPkg/Library/ArmLib/Common/AArch64/ArmLibSupport.S @@ -42,8 +42,8 @@ GCC_ASM_EXPORT (ArmWriteCpuActlr) #------------------------------------------------------------------------------
-.set DAIF_FIQ_BIT, (1 << 0)
-.set DAIF_IRQ_BIT, (1 << 1)
+.set DAIF_RD_FIQ_BIT, (1 << 6)
+.set DAIF_RD_IRQ_BIT, (1 << 7)
ASM_PFX(ArmReadMidr):
mrs x0, midr_el1 // Read from Main ID Register (MIDR)
@@ -55,18 +55,14 @@ ASM_PFX(ArmCacheInfo): ASM_PFX(ArmGetInterruptState):
mrs x0, daif
- tst w0, #DAIF_IRQ_BIT // Check if IRQ is enabled. Enabled if 0.
- mov w0, #0
- mov w1, #1
- csel w0, w1, w0, ne
+ tst w0, #DAIF_RD_IRQ_BIT // Check if IRQ is enabled. Enabled if 0 (Z=1)
+ cset w0, eq // if Z=1 return 1, else 0
ret
ASM_PFX(ArmGetFiqState):
mrs x0, daif
- tst w0, #DAIF_FIQ_BIT // Check if FIQ is enabled. Enabled if 0.
- mov w0, #0
- mov w1, #1
- csel w0, w1, w0, ne
+ tst w0, #DAIF_RD_FIQ_BIT // Check if FIQ is enabled. Enabled if 0 (Z=1)
+ cset w0, eq // if Z=1 return 1, else 0
ret
ASM_PFX(ArmWriteCpacr):
|