From: Pranavkumar Sawargaonkar Date: Thu, 19 Jun 2014 17:06:26 +0000 (+0100) Subject: target-arm: Introduce per-CPU field for PSCI version X-Git-Tag: v2.1.0-rc0~42^2~2 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=dd032e348757bae0451e25a473f34c25f8750c2b;p=thirdparty%2Fqemu.git target-arm: Introduce per-CPU field for PSCI version We require to know the PSCI version available to given CPU at potentially many places. Currently, we need to know PSCI version when generating DTB for virt machine. This patch introduce per-CPU 32bit field representing the PSCI version available to the CPU. The encoding of this 32bit field is same as described in PSCI v0.2 spec. Signed-off-by: Pranavkumar Sawargaonkar Signed-off-by: Anup Patel Reviewed-by: Peter Maydell Message-id: 1402901605-24551-8-git-send-email-pranavkumar@linaro.org Signed-off-by: Peter Maydell --- diff --git a/target-arm/cpu-qom.h b/target-arm/cpu-qom.h index 2bd7df8bfd8..eaee9447ee5 100644 --- a/target-arm/cpu-qom.h +++ b/target-arm/cpu-qom.h @@ -94,6 +94,12 @@ typedef struct ARMCPU { /* 'compatible' string for this CPU for Linux device trees */ const char *dtb_compatible; + /* PSCI version for this CPU + * Bits[31:16] = Major Version + * Bits[15:0] = Minor Version + */ + uint32_t psci_version; + /* Should CPU start in PSCI powered-off state? */ bool start_powered_off; diff --git a/target-arm/cpu.c b/target-arm/cpu.c index b8778350f7e..05e52e0e835 100644 --- a/target-arm/cpu.c +++ b/target-arm/cpu.c @@ -260,6 +260,7 @@ static void arm_cpu_initfn(Object *obj) * picky DTB consumer will also provide a helpful error message. */ cpu->dtb_compatible = "qemu,unknown"; + cpu->psci_version = 1; /* By default assume PSCI v0.1 */ cpu->kvm_target = QEMU_KVM_ARM_TARGET_NONE; if (tcg_enabled() && !inited) { diff --git a/target-arm/kvm32.c b/target-arm/kvm32.c index 52d626c4768..068af7db57e 100644 --- a/target-arm/kvm32.c +++ b/target-arm/kvm32.c @@ -184,6 +184,7 @@ int kvm_arch_init_vcpu(CPUState *cs) cpu->kvm_init_features[0] |= 1 << KVM_ARM_VCPU_POWER_OFF; } if (kvm_check_extension(cs->kvm_state, KVM_CAP_ARM_PSCI_0_2)) { + cpu->psci_version = 2; cpu->kvm_init_features[0] |= 1 << KVM_ARM_VCPU_PSCI_0_2; } diff --git a/target-arm/kvm64.c b/target-arm/kvm64.c index fca5f587e24..5d217ca2ad1 100644 --- a/target-arm/kvm64.c +++ b/target-arm/kvm64.c @@ -92,6 +92,7 @@ int kvm_arch_init_vcpu(CPUState *cs) cpu->kvm_init_features[0] |= 1 << KVM_ARM_VCPU_POWER_OFF; } if (kvm_check_extension(cs->kvm_state, KVM_CAP_ARM_PSCI_0_2)) { + cpu->psci_version = 2; cpu->kvm_init_features[0] |= 1 << KVM_ARM_VCPU_PSCI_0_2; }