diff options
Diffstat (limited to 'target/microblaze/cpu.c')
| -rw-r--r-- | target/microblaze/cpu.c | 30 |
1 files changed, 26 insertions, 4 deletions
diff --git a/target/microblaze/cpu.c b/target/microblaze/cpu.c index 4dc1404800..9b546a2c18 100644 --- a/target/microblaze/cpu.c +++ b/target/microblaze/cpu.c @@ -72,6 +72,9 @@ static const struct { {NULL, 0}, }; +/* If no specific version gets selected, default to the following. */ +#define DEFAULT_CPU_VERSION "10.0" + static void mb_cpu_set_pc(CPUState *cs, vaddr value) { MicroBlazeCPU *cpu = MICROBLAZE_CPU(cs); @@ -125,6 +128,7 @@ static void mb_cpu_reset(CPUState *s) env->mmu.c_mmu = 3; env->mmu.c_mmu_tlb_access = 3; env->mmu.c_mmu_zones = 16; + env->mmu.c_addr_mask = MAKE_64BIT_MASK(0, cpu->cfg.addr_size); #endif } @@ -141,6 +145,7 @@ static void mb_cpu_realizefn(DeviceState *dev, Error **errp) MicroBlazeCPU *cpu = MICROBLAZE_CPU(cs); CPUMBState *env = &cpu->env; uint8_t version_code = 0; + const char *version; int i = 0; Error *local_err = NULL; @@ -150,6 +155,12 @@ static void mb_cpu_realizefn(DeviceState *dev, Error **errp) return; } + if (cpu->cfg.addr_size < 32 || cpu->cfg.addr_size > 64) { + error_setg(errp, "addr-size %d is out of range (32 - 64)", + cpu->cfg.addr_size); + return; + } + qemu_init_vcpu(cs); env->pvr.regs[0] = PVR0_USE_EXC_MASK \ @@ -162,8 +173,9 @@ static void mb_cpu_realizefn(DeviceState *dev, Error **errp) | PVR2_FPU_EXC_MASK \ | 0; - for (i = 0; mb_cpu_lookup[i].name && cpu->cfg.version; i++) { - if (strcmp(mb_cpu_lookup[i].name, cpu->cfg.version) == 0) { + version = cpu->cfg.version ? cpu->cfg.version : DEFAULT_CPU_VERSION; + for (i = 0; mb_cpu_lookup[i].name && version; i++) { + if (strcmp(mb_cpu_lookup[i].name, version) == 0) { version_code = mb_cpu_lookup[i].version_id; break; } @@ -195,8 +207,10 @@ static void mb_cpu_realizefn(DeviceState *dev, Error **errp) env->pvr.regs[5] |= cpu->cfg.dcache_writeback ? PVR5_DCACHE_WRITEBACK_MASK : 0; - env->pvr.regs[10] = 0x0c000000; /* Default to spartan 3a dsp family. */ - env->pvr.regs[11] = PVR11_USE_MMU | (16 << 17); + env->pvr.regs[10] = 0x0c000000 | /* Default to spartan 3a dsp family. */ + (cpu->cfg.addr_size - 32) << PVR10_ASIZE_SHIFT; + env->pvr.regs[11] = (cpu->cfg.use_mmu ? PVR11_USE_MMU : 0) | + 16 << 17; mcc->parent_realize(dev, errp); } @@ -226,6 +240,14 @@ static Property mb_properties[] = { DEFINE_PROP_UINT32("base-vectors", MicroBlazeCPU, cfg.base_vectors, 0), DEFINE_PROP_BOOL("use-stack-protection", MicroBlazeCPU, cfg.stackprot, false), + /* + * This is the C_ADDR_SIZE synth-time configuration option of the + * MicroBlaze cores. Supported values range between 32 and 64. + * + * When set to > 32, 32bit MicroBlaze can emit load/stores + * with extended addressing. + */ + DEFINE_PROP_UINT8("addr-size", MicroBlazeCPU, cfg.addr_size, 32), /* If use-fpu > 0 - FPU is enabled * If use-fpu = 2 - Floating point conversion and square root instructions * are enabled |