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target/arm: Allow cpu to configure GM blocksize

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Previously we hard-coded the blocksize with GMID_EL1_BS.
But the value we choose for -cpu max does not match the
value that cortex-a710 uses.

Mirror the way we handle dcz_blocksize.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230811214031.171020-3-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2023-08-31 09:45:14 +01:00 • committed by Peter Maydell
parent ae4acc696f
commit 851ec6eba5
7 changed files with 45 additions and 28 deletions
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11
target/arm/helper.c
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@ -7748,10 +7748,6 @@ static const ARMCPRegInfo mte_reginfo[] = {
.opc0 = 3, .opc1 = 0, .crn = 1, .crm = 0, .opc2 = 6,
.access = PL1_RW, .accessfn = access_mte,
.fieldoffset = offsetof(CPUARMState, cp15.gcr_el1) },
{ .name = "GMID_EL1", .state = ARM_CP_STATE_AA64,
.opc0 = 3, .opc1 = 1, .crn = 0, .crm = 0, .opc2 = 4,
.access = PL1_R, .accessfn = access_aa64_tid5,
.type = ARM_CP_CONST, .resetvalue = GMID_EL1_BS },
{ .name = "TCO", .state = ARM_CP_STATE_AA64,
.opc0 = 3, .opc1 = 3, .crn = 4, .crm = 2, .opc2 = 7,
.type = ARM_CP_NO_RAW,
@ -9342,6 +9338,13 @@ void register_cp_regs_for_features(ARMCPU *cpu)
* then define only a RAZ/WI version of PSTATE.TCO.
*/
if (cpu_isar_feature(aa64_mte, cpu)) {
ARMCPRegInfo gmid_reginfo = {
.name = "GMID_EL1", .state = ARM_CP_STATE_AA64,
.opc0 = 3, .opc1 = 1, .crn = 0, .crm = 0, .opc2 = 4,
.access = PL1_R, .accessfn = access_aa64_tid5,
.type = ARM_CP_CONST, .resetvalue = cpu->gm_blocksize,
};
define_one_arm_cp_reg(cpu, &gmid_reginfo);
define_arm_cp_regs(cpu, mte_reginfo);
define_arm_cp_regs(cpu, mte_el0_cacheop_reginfo);
} else if (cpu_isar_feature(aa64_mte_insn_reg, cpu)) {