[PATCH 5/5] target/arm: Implement cortex-a710

[Richard Henderson <richard.henderson@linaro.org>]

The cortex-a710 is a first generation ARMv9.0-A processor.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 docs/system/arm/virt.rst |   1 +
 hw/arm/virt.c            |   1 +
 target/arm/tcg/cpu64.c   | 167 +++++++++++++++++++++++++++++++++++++++
 3 files changed, 169 insertions(+)

diff --git a/docs/system/arm/virt.rst b/docs/system/arm/virt.rst
index 51cdac6841..e1697ac8f4 100644
--- a/docs/system/arm/virt.rst
+++ b/docs/system/arm/virt.rst
@@ -58,6 +58,7 @@ Supported guest CPU types:
 - ``cortex-a57`` (64-bit)
 - ``cortex-a72`` (64-bit)
 - ``cortex-a76`` (64-bit)
+- ``cortex-a710`` (64-bit)
 - ``a64fx`` (64-bit)
 - ``host`` (with KVM only)
 - ``neoverse-n1`` (64-bit)
diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index 7d9dbc2663..d1522c305d 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -211,6 +211,7 @@ static const char *valid_cpus[] = {
     ARM_CPU_TYPE_NAME("cortex-a55"),
     ARM_CPU_TYPE_NAME("cortex-a72"),
     ARM_CPU_TYPE_NAME("cortex-a76"),
+    ARM_CPU_TYPE_NAME("cortex-a710"),
     ARM_CPU_TYPE_NAME("a64fx"),
     ARM_CPU_TYPE_NAME("neoverse-n1"),
     ARM_CPU_TYPE_NAME("neoverse-v1"),
diff --git a/target/arm/tcg/cpu64.c b/target/arm/tcg/cpu64.c
index 5ca9070c14..6f555a39ce 100644
--- a/target/arm/tcg/cpu64.c
+++ b/target/arm/tcg/cpu64.c
@@ -700,6 +700,172 @@ static void aarch64_neoverse_v1_initfn(Object *obj)
     aarch64_add_sve_properties(obj);
 }
 
+static const ARMCPRegInfo cortex_a710_cp_reginfo[] = {
+    /* TODO: trapped by HCR_EL2.TIDCP */
+    { .name = "CPUACTLR4_EL1", .state = ARM_CP_STATE_AA64,
+      .opc0 = 3, .opc1 = 0, .crn = 15, .crm = 1, .opc2 = 3,
+      .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
+    { .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 = "CPUACTLR5_EL1", .state = ARM_CP_STATE_AA64,
+      .opc0 = 3, .opc1 = 0, .crn = 15, .crm = 8, .opc2 = 0,
+      .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
+    { .name = "CPUACTLR6_EL1", .state = ARM_CP_STATE_AA64,
+      .opc0 = 3, .opc1 = 0, .crn = 15, .crm = 8, .opc2 = 1,
+      .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
+    { .name = "CPUACTLR7_EL1", .state = ARM_CP_STATE_AA64,
+      .opc0 = 3, .opc1 = 0, .crn = 15, .crm = 8, .opc2 = 2,
+      .access = PL1_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
+    { .name = "CPUPPMCR4_EL3", .state = ARM_CP_STATE_AA64,
+      .opc0 = 3, .opc1 = 6, .crn = 15, .crm = 2, .opc2 = 4,
+      .access = PL3_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
+    { .name = "CPUPPMCR5_EL3", .state = ARM_CP_STATE_AA64,
+      .opc0 = 3, .opc1 = 6, .crn = 15, .crm = 2, .opc2 = 5,
+      .access = PL3_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
+    { .name = "CPUPPMCR6_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 },
+    { .name = "CPUACTLR_EL3", .state = ARM_CP_STATE_AA64,
+      .opc0 = 3, .opc1 = 6, .crn = 15, .crm = 4, .opc2 = 0,
+      .access = PL3_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
+    { .name = "CPUPOR2_EL3", .state = ARM_CP_STATE_AA64,
+      .opc0 = 3, .opc1 = 6, .crn = 15, .crm = 8, .opc2 = 4,
+      .access = PL3_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
+    { .name = "CPUPMR2_EL3", .state = ARM_CP_STATE_AA64,
+      .opc0 = 3, .opc1 = 6, .crn = 15, .crm = 8, .opc2 = 5,
+      .access = PL3_RW, .type = ARM_CP_CONST, .resetvalue = 0 },
+
+    /*
+     * Stub RAMINDEX, as we don't actually implement caches,
+     * BTB, or anything else with cpu internal memory.
+     * "Read" zeros into the IDATA* and DDATA* output registers.
+     */
+    { .name = "RAMINDEX_EL3", .state = ARM_CP_STATE_AA64,
+      .opc0 = 1, .opc1 = 6, .crn = 15, .crm = 0, .opc2 = 0,
+      .access = PL3_W, .type = ARM_CP_CONST, .resetvalue = 0 },
+    { .name = "IDATA0_EL3", .state = ARM_CP_STATE_AA64,
+      .opc0 = 3, .opc1 = 6, .crn = 15, .crm = 0, .opc2 = 0,
+      .access = PL3_R, .type = ARM_CP_CONST, .resetvalue = 0 },
+    { .name = "IDATA1_EL3", .state = ARM_CP_STATE_AA64,
+      .opc0 = 3, .opc1 = 6, .crn = 15, .crm = 0, .opc2 = 1,
+      .access = PL3_R, .type = ARM_CP_CONST, .resetvalue = 0 },
+    { .name = "IDATA2_EL3", .state = ARM_CP_STATE_AA64,
+      .opc0 = 3, .opc1 = 6, .crn = 15, .crm = 0, .opc2 = 2,
+      .access = PL3_R, .type = ARM_CP_CONST, .resetvalue = 0 },
+    { .name = "DDATA0_EL3", .state = ARM_CP_STATE_AA64,
+      .opc0 = 3, .opc1 = 6, .crn = 15, .crm = 1, .opc2 = 0,
+      .access = PL3_R, .type = ARM_CP_CONST, .resetvalue = 0 },
+    { .name = "DDATA1_EL3", .state = ARM_CP_STATE_AA64,
+      .opc0 = 3, .opc1 = 6, .crn = 15, .crm = 1, .opc2 = 1,
+      .access = PL3_R, .type = ARM_CP_CONST, .resetvalue = 0 },
+    { .name = "DDATA2_EL3", .state = ARM_CP_STATE_AA64,
+      .opc0 = 3, .opc1 = 6, .crn = 15, .crm = 1, .opc2 = 2,
+      .access = PL3_R, .type = ARM_CP_CONST, .resetvalue = 0 },
+};
+
+static void define_cortex_a710_cp_reginfo(ARMCPU *cpu)
+{
+    /*
+     * The Cortex A710 has all of the Neoverse V1'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);
+    define_arm_cp_regs(cpu, cortex_a710_cp_reginfo);
+}
+
+static void aarch64_a710_initfn(Object *obj)
+{
+    ARMCPU *cpu = ARM_CPU(obj);
+
+    cpu->dtb_compatible = "arm,cortex-a710";
+    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 Section B.4: AArch64 registers */
+    cpu->midr = 0x412FD471;          /* r2p1 */
+    cpu->revidr = cpu->midr;         /* mirror midr: "no significance" */
+    cpu->isar.id_pfr0  = 0x21110131;
+    cpu->isar.id_pfr1  = 0x00010000; /* GIC filled in later */
+    cpu->isar.id_dfr0  = 0x06011099; /* w/o FEAT_TRF */
+    cpu->id_afr0       = 0;
+    cpu->isar.id_mmfr0 = 0x10201105;
+    cpu->isar.id_mmfr1 = 0x40000000;
+    cpu->isar.id_mmfr2 = 0x01260000;
+    cpu->isar.id_mmfr3 = 0x02122211;
+    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_mmfr4 = 0x21021110;
+    cpu->isar.id_isar6 = 0x01111111;
+    cpu->isar.mvfr0    = 0x10110222;
+    cpu->isar.mvfr1    = 0x13211111;
+    cpu->isar.mvfr2    = 0x00000043;
+    cpu->isar.id_pfr2  = 0x00000011;
+    /* GIC filled in later; w/o FEAT_MPAM */
+    cpu->isar.id_aa64pfr0  = 0x1201101120111112ull;
+    cpu->isar.id_aa64pfr1  = 0x0000000000000221ull;
+    cpu->isar.id_aa64zfr0  = 0x0000110100110021ull;
+    cpu->isar.id_aa64dfr0  = 0x000000f210305619ull; /* w/o FEAT_{TRF,TRBE} */
+    cpu->isar.id_aa64dfr1  = 0;
+    cpu->id_aa64afr0       = 0;
+    cpu->id_aa64afr1       = 0;
+    cpu->isar.id_aa64isar0 = 0x0221111110212120ull;
+    cpu->isar.id_aa64isar1 = 0x0010111101211032ull;
+    cpu->isar.id_aa64mmfr0 = 0x0000022200101122ull;
+    cpu->isar.id_aa64mmfr1 = 0x0000000010212122ull;
+    cpu->isar.id_aa64mmfr2 = 0x1221011110101011ull;
+    cpu->clidr             = 0x0000002282000023ull;
+    cpu->gm_blocksize      = 4;
+    cpu->ctr               = 0x00000004b444c004ull; /* with DIC set */
+    cpu->dcz_blocksize     = 4;
+    /* TODO FEAT_MPAM: mpamidr_el1 = 0x0000_0001_0006_003f */
+
+    /* Section B.5.2: PMCR_EL0 */
+    cpu->isar.reset_pmcr_el0 = 0xa000;  /* with 20 counters */
+
+    /* Section B.6.7: ICH_VTR_EL2 */
+    cpu->gic_num_lrs = 4;
+    cpu->gic_vpribits = 5;
+    cpu->gic_vprebits = 5;
+    cpu->gic_pribits = 5;
+
+    /* Section 14: Scalable Vector Extensions support */
+    cpu->sve_vq.supported = 1 << 0;  /* 128bit */
+
+    /*
+     * The cortex-a710 TRM does not list CCSIDR values.
+     * The layout of the cache is in text in Table 7-1 (L1-I),
+     * Table 8-1 (L1-D), and Table 9-1 (L2).
+     *
+     * L1: 4-way set associative 64-byte line size, total either 32K or 64K.
+     * We pick 64K, so this has 256 sets.
+     *
+     * L2: 8-way set associative 64 byte line size, total either 256K or 512K.
+     * We pick 512K, so this has 1024 sets.
+     */
+    cpu->ccsidr[0] = 0x000000ff0000001aull; /* 64KB L1 dcache */
+    cpu->ccsidr[1] = 0x000000ff0000001aull; /* 64KB L1 icache */
+    cpu->ccsidr[2] = 0x000003ff0000003aull; /* 512KB L2 cache */
+
+    /* ??? Not documented -- copied from neoverse-v1 */
+    cpu->reset_sctlr = 0x30c50838;
+
+    define_cortex_a710_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;
@@ -889,6 +1055,7 @@ static const ARMCPUInfo aarch64_cpus[] = {
     { .name = "cortex-a55",         .initfn = aarch64_a55_initfn },
     { .name = "cortex-a72",         .initfn = aarch64_a72_initfn },
     { .name = "cortex-a76",         .initfn = aarch64_a76_initfn },
+    { .name = "cortex-a710",        .initfn = aarch64_a710_initfn },
     { .name = "a64fx",              .initfn = aarch64_a64fx_initfn },
     { .name = "neoverse-n1",        .initfn = aarch64_neoverse_n1_initfn },
     { .name = "neoverse-v1",        .initfn = aarch64_neoverse_v1_initfn },
-- 
2.34.1