[PATCH] target/arm: added cortex-a55 CPU support for qemu-virt

[Timofey Kutergin <tkutergin@gmail.com>]

  cortex-a55 is one of newer armv8.2+ CPUs supporting native
  Privileged Access Never (PAN) feature. Using this CPU
  provides access to this feature without using fictious "max"
  CPU.

Signed-off-by: Timofey Kutergin <tkutergin@gmail.com>
---
 hw/arm/virt.c      |  1 +
 target/arm/cpu64.c | 55 ++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 56 insertions(+)

diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index b871350856..fc0c9baba6 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -201,6 +201,7 @@ static const char *valid_cpus[] = {
     ARM_CPU_TYPE_NAME("cortex-a15"),
     ARM_CPU_TYPE_NAME("cortex-a35"),
     ARM_CPU_TYPE_NAME("cortex-a53"),
+    ARM_CPU_TYPE_NAME("cortex-a55"),
     ARM_CPU_TYPE_NAME("cortex-a57"),
     ARM_CPU_TYPE_NAME("cortex-a72"),
     ARM_CPU_TYPE_NAME("cortex-a76"),
diff --git a/target/arm/cpu64.c b/target/arm/cpu64.c
index 3d74f134f5..e1ade1b2a3 100644
--- a/target/arm/cpu64.c
+++ b/target/arm/cpu64.c
@@ -792,6 +792,60 @@ static void aarch64_a53_initfn(Object *obj)
     define_cortex_a72_a57_a53_cp_reginfo(cpu);
 }
 
+static void aarch64_a55_initfn(Object *obj)
+{
+    ARMCPU *cpu = ARM_CPU(obj);
+
+    cpu->dtb_compatible = "arm,cortex-a55";
+    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);
+    cpu->midr = 0x411fd050;
+    cpu->revidr = 0x00000000;
+    cpu->reset_fpsid = 0x41034070;
+    cpu->isar.mvfr0 = 0x10110222;
+    cpu->isar.mvfr1 = 0x13211111;
+    cpu->isar.mvfr2 = 0x00000043;
+    cpu->ctr = 0x84448004; /* L1Ip = VIPT */
+    cpu->reset_sctlr = 0x00c50838;
+    cpu->isar.id_pfr0 = 0x10000131;
+    cpu->isar.id_pfr1 = 0x00011011;
+    cpu->isar.id_dfr0 = 0x04010088;
+    cpu->id_afr0 = 0x00000000;
+    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 = 0x00011142;
+    cpu->isar.id_isar5 = 0x01011121;
+    cpu->isar.id_isar6 = 0x00000010;
+    cpu->isar.id_aa64pfr0 = 0x10112222;
+    cpu->isar.id_aa64dfr0 = 0x10305408;
+    cpu->isar.id_aa64isar0 = 0x10211120;
+    cpu->isar.id_aa64isar1 = 0x00100001;
+    cpu->isar.id_aa64mmfr0 = 0x00101122;
+    cpu->isar.id_aa64mmfr1 = 0x10212122;
+    cpu->isar.id_aa64mmfr2 = 0x00001011;
+    cpu->isar.dbgdidr = 0x3516d000;
+    cpu->clidr = 0x82000023;
+    cpu->ccsidr[0] = 0x700fe01a; /* 32KB L1 dcache */
+    cpu->ccsidr[1] = 0x200fe01a; /* 32KB L1 icache */
+    cpu->ccsidr[2] = 0x703fe07a; /* 512KB L2 cache */
+    cpu->dcz_blocksize = 4; /* 64 bytes */
+    cpu->gic_num_lrs = 4;
+    cpu->gic_vpribits = 5;
+    cpu->gic_vprebits = 5;
+}
+
 static void aarch64_a72_initfn(Object *obj)
 {
     ARMCPU *cpu = ARM_CPU(obj);
@@ -1243,6 +1297,7 @@ static const ARMCPUInfo aarch64_cpus[] = {
     { .name = "cortex-a35",         .initfn = aarch64_a35_initfn },
     { .name = "cortex-a57",         .initfn = aarch64_a57_initfn },
     { .name = "cortex-a53",         .initfn = aarch64_a53_initfn },
+    { .name = "cortex-a55",         .initfn = aarch64_a55_initfn },
     { .name = "cortex-a72",         .initfn = aarch64_a72_initfn },
     { .name = "cortex-a76",         .initfn = aarch64_a76_initfn },
     { .name = "a64fx",              .initfn = aarch64_a64fx_initfn },
-- 
2.25.1