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Co-developed-by: Frederic Konrad Signed-off-by: Clément Chigot --- hw/sparc/leon3.c | 98 ++++++++++++++++++++++++++++++++++-------------- 1 file changed, 70 insertions(+), 28 deletions(-) diff --git a/hw/sparc/leon3.c b/hw/sparc/leon3.c index 317eb57336..252aff72cd 100644 --- a/hw/sparc/leon3.c +++ b/hw/sparc/leon3.c @@ -54,6 +54,8 @@ #define LEON3_PROM_OFFSET (0x00000000) #define LEON3_RAM_OFFSET (0x40000000) +#define MAX_CPUS 4 + #define LEON3_UART_OFFSET (0x80000100) #define LEON3_UART_IRQ (3) @@ -67,8 +69,11 @@ #define LEON3_AHB_PNP_OFFSET (0xFFFFF000) typedef struct ResetData { - SPARCCPU *cpu; - uint32_t entry; /* save kernel entry in case of reset */ + struct CPUResetData { + int id; + SPARCCPU *cpu; + } info[MAX_CPUS]; + uint32_t entry; /* save kernel entry in case of reset */ } ResetData; static uint32_t *gen_store_u32(uint32_t *code, hwaddr addr, uint32_t val) @@ -124,17 +129,19 @@ static void write_bootloader(CPUSPARCState *env, uint8_t *base, stl_p(p++, 0x01000000); /* nop */ } -static void main_cpu_reset(void *opaque) +static void leon3_cpu_reset(void *opaque) { - ResetData *s = (ResetData *)opaque; - CPUState *cpu = CPU(s->cpu); - CPUSPARCState *env = &s->cpu->env; + struct CPUResetData *info = (struct CPUResetData *) opaque; + int id = info->id; + ResetData *s = (ResetData *)DO_UPCAST(ResetData, info[id], info); + CPUState *cpu = CPU(s->info[id].cpu); + CPUSPARCState *env = cpu_env(cpu); cpu_reset(cpu); - cpu->halted = 0; - env->pc = s->entry; - env->npc = s->entry + 4; + cpu->halted = cpu->cpu_index != 0; + env->pc = s->entry; + env->npc = s->entry + 4; } static void leon3_cache_control_int(CPUSPARCState *env) @@ -168,8 +175,8 @@ static void leon3_cache_control_int(CPUSPARCState *env) static void leon3_irq_ack(CPUSPARCState *env, int intno) { - /* No SMP support yet, only CPU #0 available so far. */ - grlib_irqmp_ack(env->irq_manager, 0, intno); + CPUState *cpu = CPU(env_cpu(env)); + grlib_irqmp_ack(env->irq_manager, cpu->cpu_index, intno); } /* @@ -211,6 +218,19 @@ static void leon3_set_pil_in(void *opaque, int n, int level) } } +static void leon3_start_cpu_async_work(CPUState *cpu, run_on_cpu_data data) +{ + cpu->halted = 0; +} + +static void leon3_start_cpu(void *opaque, int n, int level) +{ + CPUState *cs = CPU(opaque); + + assert(level == 1); + async_run_on_cpu(cs, leon3_start_cpu_async_work, RUN_ON_CPU_NULL); +} + static void leon3_irq_manager(CPUSPARCState *env, int intno) { leon3_irq_ack(env, intno); @@ -236,16 +256,20 @@ static void leon3_generic_hw_init(MachineState *machine) AHBPnp *ahb_pnp; APBPnp *apb_pnp; - /* Init CPU */ - cpu = SPARC_CPU(cpu_create(machine->cpu_type)); - env = &cpu->env; + reset_info = g_malloc0(sizeof(ResetData)); - cpu_sparc_set_id(env, 0); + for (i = 0; i < machine->smp.cpus; i++) { + /* Init CPU */ + cpu = SPARC_CPU(cpu_create(machine->cpu_type)); + env = &cpu->env; - /* Reset data */ - reset_info = g_new0(ResetData, 1); - reset_info->cpu = cpu; - qemu_register_reset(main_cpu_reset, reset_info); + cpu_sparc_set_id(env, i); + + /* Reset data */ + reset_info->info[i].id = i; + reset_info->info[i].cpu = cpu; + qemu_register_reset(leon3_cpu_reset, &reset_info->info[i]); + } ahb_pnp = GRLIB_AHB_PNP(qdev_new(TYPE_GRLIB_AHB_PNP)); sysbus_realize_and_unref(SYS_BUS_DEVICE(ahb_pnp), &error_fatal); @@ -263,14 +287,28 @@ static void leon3_generic_hw_init(MachineState *machine) /* Allocate IRQ manager */ irqmpdev = qdev_new(TYPE_GRLIB_IRQMP); + object_property_set_int(OBJECT(irqmpdev), "ncpus", machine->smp.cpus, + &error_fatal); sysbus_realize_and_unref(SYS_BUS_DEVICE(irqmpdev), &error_fatal); - qdev_init_gpio_in_named_with_opaque(DEVICE(cpu), leon3_set_pil_in, - env, "pil", 1); - qdev_connect_gpio_out_named(irqmpdev, "grlib-irq", 0, - qdev_get_gpio_in_named(DEVICE(cpu), "pil", 0)); + + for (i = 0; i < machine->smp.cpus; i++) { + cpu = reset_info->info[i].cpu; + env = &cpu->env; + qdev_init_gpio_in_named_with_opaque(DEVICE(cpu), leon3_start_cpu, + cpu, "start_cpu", 1); + qdev_connect_gpio_out_named(irqmpdev, "grlib-start-cpu", i, + qdev_get_gpio_in_named(DEVICE(cpu), + "start_cpu", 0)); + qdev_init_gpio_in_named_with_opaque(DEVICE(cpu), leon3_set_pil_in, + env, "pil", 1); + qdev_connect_gpio_out_named(irqmpdev, "grlib-irq", i, + qdev_get_gpio_in_named(DEVICE(cpu), + "pil", 0)); + env->irq_manager = irqmpdev; + env->qemu_irq_ack = leon3_irq_manager; + } + sysbus_mmio_map(SYS_BUS_DEVICE(irqmpdev), 0, LEON3_IRQMP_OFFSET); - env->irq_manager = irqmpdev; - env->qemu_irq_ack = leon3_irq_manager; grlib_apb_pnp_add_entry(apb_pnp, LEON3_IRQMP_OFFSET, 0xFFF, GRLIB_VENDOR_GAISLER, GRLIB_IRQMP_DEV, 2, 0, GRLIB_APBIO_AREA); @@ -344,10 +382,13 @@ static void leon3_generic_hw_init(MachineState *machine) uint8_t *bootloader_entry; bootloader_entry = memory_region_get_ram_ptr(prom); - write_bootloader(env, bootloader_entry, entry); - env->pc = LEON3_PROM_OFFSET; - env->npc = LEON3_PROM_OFFSET + 4; + write_bootloader(&reset_info->info[0].cpu->env, bootloader_entry, + entry); reset_info->entry = LEON3_PROM_OFFSET; + for (i = 0; i < machine->smp.cpus; i++) { + reset_info->info[i].cpu->env.pc = LEON3_PROM_OFFSET; + reset_info->info[i].cpu->env.npc = LEON3_PROM_OFFSET + 4; + } } } @@ -386,6 +427,7 @@ static void leon3_generic_machine_init(MachineClass *mc) mc->init = leon3_generic_hw_init; mc->default_cpu_type = SPARC_CPU_TYPE_NAME("LEON3"); mc->default_ram_id = "leon3.ram"; + mc->max_cpus = MAX_CPUS; } DEFINE_MACHINE("leon3_generic", leon3_generic_machine_init)