diff options
| -rw-r--r-- | hw/arm/virt.c | 82 |
1 files changed, 38 insertions, 44 deletions
diff --git a/hw/arm/virt.c b/hw/arm/virt.c index 5c010e52b8..78f618d3bb 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -191,47 +191,48 @@ static void create_fdt(VirtBoardInfo *vbi) static void fdt_add_psci_node(const VirtBoardInfo *vbi) { + uint32_t cpu_suspend_fn; + uint32_t cpu_off_fn; + uint32_t cpu_on_fn; + uint32_t migrate_fn; void *fdt = vbi->fdt; ARMCPU *armcpu = ARM_CPU(qemu_get_cpu(0)); - /* No PSCI for TCG yet */ - if (kvm_enabled()) { - uint32_t cpu_suspend_fn; - uint32_t cpu_off_fn; - uint32_t cpu_on_fn; - uint32_t migrate_fn; - - qemu_fdt_add_subnode(fdt, "/psci"); - if (armcpu->psci_version == 2) { - const char comp[] = "arm,psci-0.2\0arm,psci"; - qemu_fdt_setprop(fdt, "/psci", "compatible", comp, sizeof(comp)); - - cpu_off_fn = QEMU_PSCI_0_2_FN_CPU_OFF; - if (arm_feature(&armcpu->env, ARM_FEATURE_AARCH64)) { - cpu_suspend_fn = QEMU_PSCI_0_2_FN64_CPU_SUSPEND; - cpu_on_fn = QEMU_PSCI_0_2_FN64_CPU_ON; - migrate_fn = QEMU_PSCI_0_2_FN64_MIGRATE; - } else { - cpu_suspend_fn = QEMU_PSCI_0_2_FN_CPU_SUSPEND; - cpu_on_fn = QEMU_PSCI_0_2_FN_CPU_ON; - migrate_fn = QEMU_PSCI_0_2_FN_MIGRATE; - } - } else { - qemu_fdt_setprop_string(fdt, "/psci", "compatible", "arm,psci"); + qemu_fdt_add_subnode(fdt, "/psci"); + if (armcpu->psci_version == 2) { + const char comp[] = "arm,psci-0.2\0arm,psci"; + qemu_fdt_setprop(fdt, "/psci", "compatible", comp, sizeof(comp)); - cpu_suspend_fn = QEMU_PSCI_0_1_FN_CPU_SUSPEND; - cpu_off_fn = QEMU_PSCI_0_1_FN_CPU_OFF; - cpu_on_fn = QEMU_PSCI_0_1_FN_CPU_ON; - migrate_fn = QEMU_PSCI_0_1_FN_MIGRATE; + cpu_off_fn = QEMU_PSCI_0_2_FN_CPU_OFF; + if (arm_feature(&armcpu->env, ARM_FEATURE_AARCH64)) { + cpu_suspend_fn = QEMU_PSCI_0_2_FN64_CPU_SUSPEND; + cpu_on_fn = QEMU_PSCI_0_2_FN64_CPU_ON; + migrate_fn = QEMU_PSCI_0_2_FN64_MIGRATE; + } else { + cpu_suspend_fn = QEMU_PSCI_0_2_FN_CPU_SUSPEND; + cpu_on_fn = QEMU_PSCI_0_2_FN_CPU_ON; + migrate_fn = QEMU_PSCI_0_2_FN_MIGRATE; } + } else { + qemu_fdt_setprop_string(fdt, "/psci", "compatible", "arm,psci"); - qemu_fdt_setprop_string(fdt, "/psci", "method", "hvc"); - - qemu_fdt_setprop_cell(fdt, "/psci", "cpu_suspend", cpu_suspend_fn); - qemu_fdt_setprop_cell(fdt, "/psci", "cpu_off", cpu_off_fn); - qemu_fdt_setprop_cell(fdt, "/psci", "cpu_on", cpu_on_fn); - qemu_fdt_setprop_cell(fdt, "/psci", "migrate", migrate_fn); + cpu_suspend_fn = QEMU_PSCI_0_1_FN_CPU_SUSPEND; + cpu_off_fn = QEMU_PSCI_0_1_FN_CPU_OFF; + cpu_on_fn = QEMU_PSCI_0_1_FN_CPU_ON; + migrate_fn = QEMU_PSCI_0_1_FN_MIGRATE; } + + /* We adopt the PSCI spec's nomenclature, and use 'conduit' to refer + * to the instruction that should be used to invoke PSCI functions. + * However, the device tree binding uses 'method' instead, so that is + * what we should use here. + */ + qemu_fdt_setprop_string(fdt, "/psci", "method", "hvc"); + + qemu_fdt_setprop_cell(fdt, "/psci", "cpu_suspend", cpu_suspend_fn); + qemu_fdt_setprop_cell(fdt, "/psci", "cpu_off", cpu_off_fn); + qemu_fdt_setprop_cell(fdt, "/psci", "cpu_on", cpu_on_fn); + qemu_fdt_setprop_cell(fdt, "/psci", "migrate", migrate_fn); } static void fdt_add_timer_nodes(const VirtBoardInfo *vbi) @@ -548,16 +549,6 @@ static void machvirt_init(MachineState *machine) vbi->smp_cpus = smp_cpus; - /* - * Only supported method of starting secondary CPUs is PSCI and - * PSCI is not yet supported with TCG, so limit smp_cpus to 1 - * if we're not using KVM. - */ - if (!kvm_enabled() && smp_cpus > 1) { - error_report("mach-virt: must enable KVM to use multiple CPUs"); - exit(1); - } - if (machine->ram_size > vbi->memmap[VIRT_MEM].size) { error_report("mach-virt: cannot model more than 30GB RAM"); exit(1); @@ -575,6 +566,9 @@ static void machvirt_init(MachineState *machine) } cpuobj = object_new(object_class_get_name(oc)); + object_property_set_int(cpuobj, QEMU_PSCI_CONDUIT_HVC, "psci-conduit", + NULL); + /* Secondary CPUs start in PSCI powered-down state */ if (n > 0) { object_property_set_bool(cpuobj, true, "start-powered-off", NULL); |