ArmCpuInfo uses those to read system registers and other parts of EDK2
may find them useful.
Signed-off-by: Marcin Juszkiewicz <marcin.juszkiew...@linaro.org>
---
ArmPkg/Library/ArmLib/AArch64/AArch64Lib.h | 48 +++++++++++++++++++
.../Library/ArmLib/AArch64/AArch64Support.S | 32 +++++++++++++
2 files changed, 80 insertions(+)
diff --git a/ArmPkg/Library/ArmLib/AArch64/AArch64Lib.h
b/ArmPkg/Library/ArmLib/AArch64/AArch64Lib.h
index 330481fc50db..d9744a66cdcf 100644
--- a/ArmPkg/Library/ArmLib/AArch64/AArch64Lib.h
+++ b/ArmPkg/Library/ArmLib/AArch64/AArch64Lib.h
@@ -44,6 +44,54 @@ ArmReadIdAA64Pfr0 (
VOID
);
+UINTN
+EFIAPI
+ArmReadIdAA64Pfr1 (
+ VOID
+ );
+
+UINTN
+EFIAPI
+ArmReadIdAA64Dfr0 (
+ VOID
+ );
+
+UINTN
+EFIAPI
+ArmReadIdAA64Dfr1 (
+ VOID
+ );
+
+UINTN
+EFIAPI
+ArmReadIdAA64Isar0 (
+ VOID
+ );
+
+UINTN
+EFIAPI
+ArmReadIdAA64Isar1 (
+ VOID
+ );
+
+UINTN
+EFIAPI
+ArmReadIdAA64Isar2 (
+ VOID
+ );
+
+UINTN
+EFIAPI
+ArmReadIdAA64Mmfr0 (
+ VOID
+ );
+
+UINTN
+EFIAPI
+ArmReadIdAA64Mmfr1 (
+ VOID
+ );
+
/** Reads the ID_AA64MMFR2_EL1 register.
@return The contents of the ID_AA64MMFR2_EL1 register.
diff --git a/ArmPkg/Library/ArmLib/AArch64/AArch64Support.S
b/ArmPkg/Library/ArmLib/AArch64/AArch64Support.S
index d3cc1e86716b..3e8d461bc819 100644
--- a/ArmPkg/Library/ArmLib/AArch64/AArch64Support.S
+++ b/ArmPkg/Library/ArmLib/AArch64/AArch64Support.S
@@ -482,4 +482,36 @@ ASM_FUNC(ArmWriteCntHctl)
msr cnthctl_el2, x0
ret
+ASM_FUNC(ArmReadIdAA64Pfr1)
+ mrs x0, ID_AA64PFR1_EL1
+ ret
+
+ASM_FUNC(ArmReadIdAA64Dfr0)
+ mrs x0, ID_AA64DFR0_EL1
+ ret
+
+ASM_FUNC(ArmReadIdAA64Dfr1)
+ mrs x0, ID_AA64DFR1_EL1
+ ret
+
+ASM_FUNC(ArmReadIdAA64Isar0)
+ mrs x0, ID_AA64ISAR0_EL1
+ ret
+
+ASM_FUNC(ArmReadIdAA64Isar1)
+ mrs x0, ID_AA64ISAR1_EL1
+ ret
+
+ASM_FUNC(ArmReadIdAA64Isar2)
+ mrs x0, ID_AA64ISAR2_EL1
+ ret
+
+ASM_FUNC(ArmReadIdAA64Mmfr0)
+ mrs x0, ID_AA64MMFR0_EL1
+ ret
+
+ASM_FUNC(ArmReadIdAA64Mmfr1)
+ mrs x0, ID_AA64MMFR1_EL1
+ ret
+
ASM_FUNCTION_REMOVE_IF_UNREFERENCED
--
2.40.0
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