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ArmPkg: older assemblers may lack ID_AA64ISAR2_EL1

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ArmCpuInfo needs to be able to read ID_AA64ISAR2_EL1 system register.
Older toolchains do not know it.

Same solution as one for QEMU:
https://www.mail-archive.com/qemu-devel@nongnu.org/msg929586.html

Signed-off-by: Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org>
Reviewed-by: Leif Lindholm <quic_llindhol@quicinc.com>
This commit is contained in:
Marcin Juszkiewicz 2023-04-20 21:45:32 +02:00 committed by mergify[bot]
parent 67b5dba791
commit 9bf79303ae
1 changed files with 4 additions and 0 deletions
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4
ArmPkg/Include/Chipset/AArch64.h
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@ -112,6 +112,10 @@
#define ARM_VECTOR_LOW_A32_FIQ 0x700
#define ARM_VECTOR_LOW_A32_SERR 0x780
// The ID_AA64ISAR2_EL1 register is not recognized by older
// assemblers, we need to define it here.
#define ID_AA64ISAR2_EL1 S3_0_C0_C6_2
// The ID_AA64MMFR2_EL1 register was added in ARMv8.2. Since we
// build for ARMv8.0, we need to define the register here.
#define ID_AA64MMFR2_EL1 S3_0_C0_C7_2