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target/arm: Enable FEAT_Debugv8p8 for -cpu max 

Enable FEAT_Debugv8p8 for max CPU. This feature is out of scope for QEMU
since it concerns the external debug interface for JTAG, but is
mandatory in Armv8.8 implementations, hence it is reported as supported
in the ID registers.

Signed-off-by: Gustavo Romero <gustavo.romero@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20240624180915.4528-4-gustavo.romero@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Gustavo Romero 2024-06-24 18:09:15 +00:00 committed by Peter Maydell
parent c5f9e8bb93
commit 02ff2add77
3 changed files with 5 additions and 4 deletions
docs/system/arm
emulation.rst
target/arm/tcg
cpu32.ccpu64.c

1
docs/system/arm/emulation.rst
View File

@ -41,6 +41,7 @@ the following architecture extensions:
- FEAT_Debugv8p1 (Debug with VHE)
- FEAT_Debugv8p2 (Debug changes for v8.2)
- FEAT_Debugv8p4 (Debug changes for v8.4)
- FEAT_Debugv8p8 (Debug changes for v8.8)
- FEAT_DotProd (Advanced SIMD dot product instructions)
- FEAT_DoubleFault (Double Fault Extension)
- FEAT_E0PD (Preventing EL0 access to halves of address maps)

6
target/arm/tcg/cpu32.c
View File

@ -82,8 +82,8 @@ void aa32_max_features(ARMCPU *cpu)
cpu->isar.id_pfr2 = t;
t = cpu->isar.id_dfr0;
t = FIELD_DP32(t, ID_DFR0, COPDBG, 9); /* FEAT_Debugv8p4 */
t = FIELD_DP32(t, ID_DFR0, COPSDBG, 9); /* FEAT_Debugv8p4 */
t = FIELD_DP32(t, ID_DFR0, COPDBG, 10); /* FEAT_Debugv8p8 */
t = FIELD_DP32(t, ID_DFR0, COPSDBG, 10); /* FEAT_Debugv8p8 */
t = FIELD_DP32(t, ID_DFR0, PERFMON, 6); /* FEAT_PMUv3p5 */
cpu->isar.id_dfr0 = t;
@ -93,7 +93,7 @@ void aa32_max_features(ARMCPU *cpu)
t = 0x00008000;
t = FIELD_DP32(t, DBGDIDR, SE_IMP, 1);
t = FIELD_DP32(t, DBGDIDR, NSUHD_IMP, 1);
t = FIELD_DP32(t, DBGDIDR, VERSION, 6); /* Armv8 debug */
t = FIELD_DP32(t, DBGDIDR, VERSION, 10); /* FEAT_Debugv8p8 */
t = FIELD_DP32(t, DBGDIDR, CTX_CMPS, 1);
t = FIELD_DP32(t, DBGDIDR, BRPS, 5);
t = FIELD_DP32(t, DBGDIDR, WRPS, 3);

2
target/arm/tcg/cpu64.c
View File

@ -1253,7 +1253,7 @@ void aarch64_max_tcg_initfn(Object *obj)
cpu->isar.id_aa64zfr0 = t;
t = cpu->isar.id_aa64dfr0;
t = FIELD_DP64(t, ID_AA64DFR0, DEBUGVER, 9); /* FEAT_Debugv8p4 */
t = FIELD_DP64(t, ID_AA64DFR0, DEBUGVER, 10); /* FEAT_Debugv8p8 */
t = FIELD_DP64(t, ID_AA64DFR0, PMUVER, 6); /* FEAT_PMUv3p5 */
t = FIELD_DP64(t, ID_AA64DFR0, HPMN0, 1); /* FEAT_HPMN0 */
cpu->isar.id_aa64dfr0 = t;