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target/arm: Define neoverse-v1 
Now that we have implemented support for FEAT_LSE2, we can define
a CPU model for the Neoverse-V1, and enable it for the virt and
sbsa-ref boards.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20230704130647.2842917-3-peter.maydell@linaro.org
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
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pm215 committed Jul 6, 2023
1 parent 7d8c283 commit c74138c
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Showing 4 changed files with 131 additions and 0 deletions.
1 change: 1 addition & 0 deletions docs/system/arm/virt.rst
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Expand Up @@ -61,6 +61,7 @@ Supported guest CPU types:
- ``a64fx`` (64-bit)
- ``host`` (with KVM only)
- ``neoverse-n1`` (64-bit)
- ``neoverse-v1`` (64-bit)
- ``max`` (same as ``host`` for KVM; best possible emulation with TCG)

Note that the default is ``cortex-a15``, so for an AArch64 guest you must
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1 change: 1 addition & 0 deletions hw/arm/sbsa-ref.c
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Expand Up @@ -153,6 +153,7 @@ static const char * const valid_cpus[] = {
ARM_CPU_TYPE_NAME("cortex-a57"),
ARM_CPU_TYPE_NAME("cortex-a72"),
ARM_CPU_TYPE_NAME("neoverse-n1"),
ARM_CPU_TYPE_NAME("neoverse-v1"),
ARM_CPU_TYPE_NAME("max"),
};

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1 change: 1 addition & 0 deletions hw/arm/virt.c
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Expand Up @@ -214,6 +214,7 @@ static const char *valid_cpus[] = {
ARM_CPU_TYPE_NAME("cortex-a76"),
ARM_CPU_TYPE_NAME("a64fx"),
ARM_CPU_TYPE_NAME("neoverse-n1"),
ARM_CPU_TYPE_NAME("neoverse-v1"),
#endif
ARM_CPU_TYPE_NAME("cortex-a53"),
ARM_CPU_TYPE_NAME("cortex-a57"),
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128 changes: 128 additions & 0 deletions target/arm/tcg/cpu64.c
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Expand Up @@ -502,6 +502,31 @@ static void define_neoverse_n1_cp_reginfo(ARMCPU *cpu)
define_arm_cp_regs(cpu, neoverse_n1_cp_reginfo);
}

static const ARMCPRegInfo neoverse_v1_cp_reginfo[] = {
{ .name = "CPUECTLR2_EL1", .state = ARM_CP_STATE_AA64,
.opc0 = 3, .opc1 = 0, .crn = 15, .crm = 1, .opc2 = 5,
.access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
{ .name = "CPUPPMCR_EL3", .state = ARM_CP_STATE_AA64,
.opc0 = 3, .opc1 = 6, .crn = 15, .crm = 2, .opc2 = 0,
.access = PL3_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
{ .name = "CPUPPMCR2_EL3", .state = ARM_CP_STATE_AA64,
.opc0 = 3, .opc1 = 6, .crn = 15, .crm = 2, .opc2 = 1,
.access = PL3_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
{ .name = "CPUPPMCR3_EL3", .state = ARM_CP_STATE_AA64,
.opc0 = 3, .opc1 = 6, .crn = 15, .crm = 2, .opc2 = 6,
.access = PL3_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
};

static void define_neoverse_v1_cp_reginfo(ARMCPU *cpu)
{
/*
* The Neoverse V1 has all of the Neoverse N1's IMPDEF
* registers and a few more of its own.
*/
define_arm_cp_regs(cpu, neoverse_n1_cp_reginfo);
define_arm_cp_regs(cpu, neoverse_v1_cp_reginfo);
}

static void aarch64_neoverse_n1_initfn(Object *obj)
{
ARMCPU *cpu = ARM_CPU(obj);
Expand Down Expand Up @@ -573,6 +598,108 @@ static void aarch64_neoverse_n1_initfn(Object *obj)
define_neoverse_n1_cp_reginfo(cpu);
}

static void aarch64_neoverse_v1_initfn(Object *obj)
{
ARMCPU *cpu = ARM_CPU(obj);

cpu->dtb_compatible = "arm,neoverse-v1";
set_feature(&cpu->env, ARM_FEATURE_V8);
set_feature(&cpu->env, ARM_FEATURE_NEON);
set_feature(&cpu->env, ARM_FEATURE_GENERIC_TIMER);
set_feature(&cpu->env, ARM_FEATURE_AARCH64);
set_feature(&cpu->env, ARM_FEATURE_CBAR_RO);
set_feature(&cpu->env, ARM_FEATURE_EL2);
set_feature(&cpu->env, ARM_FEATURE_EL3);
set_feature(&cpu->env, ARM_FEATURE_PMU);

/* Ordered by 3.2.4 AArch64 registers by functional group */
cpu->clidr = 0x82000023;
cpu->ctr = 0xb444c004; /* With DIC and IDC set */
cpu->dcz_blocksize = 4;
cpu->id_aa64afr0 = 0x00000000;
cpu->id_aa64afr1 = 0x00000000;
cpu->isar.id_aa64dfr0 = 0x000001f210305519ull;
cpu->isar.id_aa64dfr1 = 0x00000000;
cpu->isar.id_aa64isar0 = 0x1011111110212120ull; /* with FEAT_RNG */
cpu->isar.id_aa64isar1 = 0x0111000001211032ull;
cpu->isar.id_aa64mmfr0 = 0x0000000000101125ull;
cpu->isar.id_aa64mmfr1 = 0x0000000010212122ull;
cpu->isar.id_aa64mmfr2 = 0x0220011102101011ull;
cpu->isar.id_aa64pfr0 = 0x1101110120111112ull; /* GIC filled in later */
cpu->isar.id_aa64pfr1 = 0x0000000000000020ull;
cpu->id_afr0 = 0x00000000;
cpu->isar.id_dfr0 = 0x15011099;
cpu->isar.id_isar0 = 0x02101110;
cpu->isar.id_isar1 = 0x13112111;
cpu->isar.id_isar2 = 0x21232042;
cpu->isar.id_isar3 = 0x01112131;
cpu->isar.id_isar4 = 0x00010142;
cpu->isar.id_isar5 = 0x11011121;
cpu->isar.id_isar6 = 0x01100111;
cpu->isar.id_mmfr0 = 0x10201105;
cpu->isar.id_mmfr1 = 0x40000000;
cpu->isar.id_mmfr2 = 0x01260000;
cpu->isar.id_mmfr3 = 0x02122211;
cpu->isar.id_mmfr4 = 0x01021110;
cpu->isar.id_pfr0 = 0x21110131;
cpu->isar.id_pfr1 = 0x00010000; /* GIC filled in later */
cpu->isar.id_pfr2 = 0x00000011;
cpu->midr = 0x411FD402; /* r1p2 */
cpu->revidr = 0;

/*
* The Neoverse-V1 r1p2 TRM lists 32-bit format CCSIDR_EL1 values,
* but also says it implements CCIDX, which means they should be
* 64-bit format. So we here use values which are based on the textual
* information in chapter 2 of the TRM (and on the fact that
* sets * associativity * linesize == cachesize).
*
* The 64-bit CCSIDR_EL1 format is:
* [55:32] number of sets - 1
* [23:3] associativity - 1
* [2:0] log2(linesize) - 4
* so 0 == 16 bytes, 1 == 32 bytes, 2 == 64 bytes, etc
*
* L1: 4-way set associative 64-byte line size, total size 64K,
* so sets is 256.
*
* L2: 8-way set associative, 64 byte line size, either 512K or 1MB.
* We pick 1MB, so this has 2048 sets.
*
* L3: No L3 (this matches the CLIDR_EL1 value).
*/
cpu->ccsidr[0] = 0x000000ff0000001aull; /* 64KB L1 dcache */
cpu->ccsidr[1] = 0x000000ff0000001aull; /* 64KB L1 icache */
cpu->ccsidr[2] = 0x000007ff0000003aull; /* 1MB L2 cache */

/* From 3.2.115 SCTLR_EL3 */
cpu->reset_sctlr = 0x30c50838;

/* From 3.4.8 ICC_CTLR_EL3 and 3.4.23 ICH_VTR_EL2 */
cpu->gic_num_lrs = 4;
cpu->gic_vpribits = 5;
cpu->gic_vprebits = 5;
cpu->gic_pribits = 5;

/* From 3.5.1 AdvSIMD AArch64 register summary */
cpu->isar.mvfr0 = 0x10110222;
cpu->isar.mvfr1 = 0x13211111;
cpu->isar.mvfr2 = 0x00000043;

/* From 3.7.5 ID_AA64ZFR0_EL1 */
cpu->isar.id_aa64zfr0 = 0x0000100000100000;
cpu->sve_vq.supported = (1 << 0) /* 128bit */
| (1 << 1); /* 256bit */

/* From 5.5.1 AArch64 PMU register summary */
cpu->isar.reset_pmcr_el0 = 0x41213000;

define_neoverse_v1_cp_reginfo(cpu);

aarch64_add_pauth_properties(obj);
aarch64_add_sve_properties(obj);
}

/*
* -cpu max: a CPU with as many features enabled as our emulation supports.
* The version of '-cpu max' for qemu-system-arm is defined in cpu32.c;
Expand Down Expand Up @@ -763,6 +890,7 @@ static const ARMCPUInfo aarch64_cpus[] = {
{ .name = "cortex-a76", .initfn = aarch64_a76_initfn },
{ .name = "a64fx", .initfn = aarch64_a64fx_initfn },
{ .name = "neoverse-n1", .initfn = aarch64_neoverse_n1_initfn },
{ .name = "neoverse-v1", .initfn = aarch64_neoverse_v1_initfn },
};

static void aarch64_cpu_register_types(void)
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