diff options
-rw-r--r-- | hw/mips/mips_malta.c | 60 | ||||
-rw-r--r-- | target-mips/cpu.h | 1 | ||||
-rw-r--r-- | target-mips/translate.c | 10 |
3 files changed, 60 insertions, 11 deletions
diff --git a/hw/mips/mips_malta.c b/hw/mips/mips_malta.c index cc32a44429..fa769e5c00 100644 --- a/hw/mips/mips_malta.c +++ b/hw/mips/mips_malta.c @@ -57,6 +57,7 @@ #include "hw/empty_slot.h" #include "sysemu/kvm.h" #include "exec/semihost.h" +#include "hw/mips/cps.h" //#define DEBUG_BOARD_INIT @@ -95,6 +96,7 @@ typedef struct { typedef struct { SysBusDevice parent_obj; + MIPSCPSState *cps; qemu_irq *i8259; } MaltaState; @@ -908,19 +910,12 @@ static void main_cpu_reset(void *opaque) } } -static void create_cpu(const char *cpu_model, - qemu_irq *cbus_irq, qemu_irq *i8259_irq) +static void create_cpu_without_cps(const char *cpu_model, + qemu_irq *cbus_irq, qemu_irq *i8259_irq) { CPUMIPSState *env; MIPSCPU *cpu; int i; - if (cpu_model == NULL) { -#ifdef TARGET_MIPS64 - cpu_model = "20Kc"; -#else - cpu_model = "24Kf"; -#endif - } for (i = 0; i < smp_cpus; i++) { cpu = cpu_mips_init(cpu_model); @@ -942,6 +937,49 @@ static void create_cpu(const char *cpu_model, *cbus_irq = env->irq[4]; } +static void create_cps(MaltaState *s, const char *cpu_model, + qemu_irq *cbus_irq, qemu_irq *i8259_irq) +{ + Error *err = NULL; + s->cps = g_new0(MIPSCPSState, 1); + + object_initialize(s->cps, sizeof(MIPSCPSState), TYPE_MIPS_CPS); + qdev_set_parent_bus(DEVICE(s->cps), sysbus_get_default()); + + object_property_set_str(OBJECT(s->cps), cpu_model, "cpu-model", &err); + object_property_set_int(OBJECT(s->cps), smp_cpus, "num-vp", &err); + object_property_set_bool(OBJECT(s->cps), true, "realized", &err); + if (err != NULL) { + error_report("%s", error_get_pretty(err)); + exit(1); + } + + sysbus_mmio_map_overlap(SYS_BUS_DEVICE(s->cps), 0, 0, 1); + + /* FIXME: When GIC is present then we should use GIC's IRQ 3. + Until then CPS exposes CPU's IRQs thus use the default IRQ 2. */ + *i8259_irq = get_cps_irq(s->cps, 2); + *cbus_irq = NULL; +} + +static void create_cpu(MaltaState *s, const char *cpu_model, + qemu_irq *cbus_irq, qemu_irq *i8259_irq) +{ + if (cpu_model == NULL) { +#ifdef TARGET_MIPS64 + cpu_model = "20Kc"; +#else + cpu_model = "24Kf"; +#endif + } + + if ((smp_cpus > 1) && cpu_supports_cps_smp(cpu_model)) { + create_cps(s, cpu_model, cbus_irq, i8259_irq); + } else { + create_cpu_without_cps(cpu_model, cbus_irq, i8259_irq); + } +} + static void mips_malta_init(MachineState *machine) { @@ -994,8 +1032,8 @@ void mips_malta_init(MachineState *machine) } } - /* create CPUs */ - create_cpu(machine->cpu_model, &cbus_irq, &i8259_irq); + /* create CPU */ + create_cpu(s, machine->cpu_model, &cbus_irq, &i8259_irq); /* allocate RAM */ if (ram_size > (2048u << 20)) { diff --git a/target-mips/cpu.h b/target-mips/cpu.h index 55d3224291..63fea676a0 100644 --- a/target-mips/cpu.h +++ b/target-mips/cpu.h @@ -760,6 +760,7 @@ MIPSCPU *cpu_mips_init(const char *cpu_model); int cpu_mips_signal_handler(int host_signum, void *pinfo, void *puc); #define cpu_init(cpu_model) CPU(cpu_mips_init(cpu_model)) +bool cpu_supports_cps_smp(const char *cpu_model); /* TODO QOM'ify CPU reset and remove */ void cpu_state_reset(CPUMIPSState *s); diff --git a/target-mips/translate.c b/target-mips/translate.c index 8191b9241f..a5b8805f77 100644 --- a/target-mips/translate.c +++ b/target-mips/translate.c @@ -19977,6 +19977,16 @@ MIPSCPU *cpu_mips_init(const char *cpu_model) return cpu; } +bool cpu_supports_cps_smp(const char *cpu_model) +{ + const mips_def_t *def = cpu_mips_find_by_name(cpu_model); + if (!def) { + return false; + } + + return (def->CP0_Config3 & (1 << CP0C3_CMGCR)) != 0; +} + void cpu_state_reset(CPUMIPSState *env) { MIPSCPU *cpu = mips_env_get_cpu(env); |