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target/arm: Enable BFloat16 extensions 

Disable BF16 again for !have_neon and !have_vfp during realize.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210525225817.400336-13-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2021-05-25 15:58:17 -07:00 committed by Peter Maydell
parent 6c47a9053c
commit 3c93dfa42c
3 changed files with 7 additions and 0 deletions
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3
target/arm/cpu.c
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@ -1473,6 +1473,7 @@ static void arm_cpu_realizefn(DeviceState *dev, Error **errp)
u = cpu->isar.id_isar6;
u = FIELD_DP32(u, ID_ISAR6, JSCVT, 0);
u = FIELD_DP32(u, ID_ISAR6, BF16, 0);
cpu->isar.id_isar6 = u;
u = cpu->isar.mvfr0;
@ -1513,6 +1514,7 @@ static void arm_cpu_realizefn(DeviceState *dev, Error **errp)
t = cpu->isar.id_aa64isar1;
t = FIELD_DP64(t, ID_AA64ISAR1, FCMA, 0);
t = FIELD_DP64(t, ID_AA64ISAR1, BF16, 0);
t = FIELD_DP64(t, ID_AA64ISAR1, I8MM, 0);
cpu->isar.id_aa64isar1 = t;
@ -1528,6 +1530,7 @@ static void arm_cpu_realizefn(DeviceState *dev, Error **errp)
u = cpu->isar.id_isar6;
u = FIELD_DP32(u, ID_ISAR6, DP, 0);
u = FIELD_DP32(u, ID_ISAR6, FHM, 0);
u = FIELD_DP32(u, ID_ISAR6, BF16, 0);
u = FIELD_DP32(u, ID_ISAR6, I8MM, 0);
cpu->isar.id_isar6 = u;

3
target/arm/cpu64.c
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@ -661,6 +661,7 @@ static void aarch64_max_initfn(Object *obj)
t = FIELD_DP64(t, ID_AA64ISAR1, FCMA, 1);
t = FIELD_DP64(t, ID_AA64ISAR1, SB, 1);
t = FIELD_DP64(t, ID_AA64ISAR1, SPECRES, 1);
t = FIELD_DP64(t, ID_AA64ISAR1, BF16, 1);
t = FIELD_DP64(t, ID_AA64ISAR1, FRINTTS, 1);
t = FIELD_DP64(t, ID_AA64ISAR1, LRCPC, 2); /* ARMv8.4-RCPC */
t = FIELD_DP64(t, ID_AA64ISAR1, I8MM, 1);
@ -708,6 +709,7 @@ static void aarch64_max_initfn(Object *obj)
t = FIELD_DP64(t, ID_AA64ZFR0, SVEVER, 1);
t = FIELD_DP64(t, ID_AA64ZFR0, AES, 2); /* PMULL */
t = FIELD_DP64(t, ID_AA64ZFR0, BITPERM, 1);
t = FIELD_DP64(t, ID_AA64ZFR0, BFLOAT16, 1);
t = FIELD_DP64(t, ID_AA64ZFR0, SHA3, 1);
t = FIELD_DP64(t, ID_AA64ZFR0, SM4, 1);
t = FIELD_DP64(t, ID_AA64ZFR0, I8MM, 1);
@ -731,6 +733,7 @@ static void aarch64_max_initfn(Object *obj)
u = FIELD_DP32(u, ID_ISAR6, FHM, 1);
u = FIELD_DP32(u, ID_ISAR6, SB, 1);
u = FIELD_DP32(u, ID_ISAR6, SPECRES, 1);
u = FIELD_DP32(u, ID_ISAR6, BF16, 1);
u = FIELD_DP32(u, ID_ISAR6, I8MM, 1);
cpu->isar.id_isar6 = u;

1
target/arm/cpu_tcg.c
View File

@ -968,6 +968,7 @@ static void arm_max_initfn(Object *obj)
t = FIELD_DP32(t, ID_ISAR6, FHM, 1);
t = FIELD_DP32(t, ID_ISAR6, SB, 1);
t = FIELD_DP32(t, ID_ISAR6, SPECRES, 1);
t = FIELD_DP32(t, ID_ISAR6, BF16, 1);
t = FIELD_DP32(t, ID_ISAR6, I8MM, 1);
cpu->isar.id_isar6 = t;