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| author | Shannon Zhao <shannon.zhao@linaro.org> | 2016-06-14 15:59:12 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2016-06-14 15:59:12 +0100 |
| commit | 01fe6b6076c5a90e1a5f100f67968fcada8daff8 (patch) | |
| tree | 5c04449c6822b7bcf844d4021dd55c0dde94c74f /hw/arm/virt.c | |
| parent | 5c0a3819f009639f67ce0453dff6ec7211bfee54 (diff) | |
| download | focaccia-qemu-01fe6b6076c5a90e1a5f100f67968fcada8daff8.tar.gz focaccia-qemu-01fe6b6076c5a90e1a5f100f67968fcada8daff8.zip | |
hw/arm/virt: Add PMU node for virt machine
Add a virtual PMU device for virt machine while use PPI 7 for PMU overflow interrupt number. Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org> Reviewed-by: Andrew Jones <drjones@redhat.com> Message-id: 1465267577-1808-3-git-send-email-zhaoshenglong@huawei.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'hw/arm/virt.c')
| -rw-r--r-- | hw/arm/virt.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/hw/arm/virt.c b/hw/arm/virt.c index 73113cfc4d..0f830a35b3 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -436,6 +436,37 @@ static void fdt_add_gic_node(VirtBoardInfo *vbi, int type) qemu_fdt_setprop_cell(vbi->fdt, "/intc", "phandle", vbi->gic_phandle); } +static void fdt_add_pmu_nodes(const VirtBoardInfo *vbi, int gictype) +{ + CPUState *cpu; + ARMCPU *armcpu; + uint32_t irqflags = GIC_FDT_IRQ_FLAGS_LEVEL_HI; + + CPU_FOREACH(cpu) { + armcpu = ARM_CPU(cpu); + if (!armcpu->has_pmu || + !kvm_arm_pmu_create(cpu, PPI(VIRTUAL_PMU_IRQ))) { + return; + } + } + + if (gictype == 2) { + irqflags = deposit32(irqflags, GIC_FDT_IRQ_PPI_CPU_START, + GIC_FDT_IRQ_PPI_CPU_WIDTH, + (1 << vbi->smp_cpus) - 1); + } + + armcpu = ARM_CPU(qemu_get_cpu(0)); + qemu_fdt_add_subnode(vbi->fdt, "/pmu"); + if (arm_feature(&armcpu->env, ARM_FEATURE_V8)) { + const char compat[] = "arm,armv8-pmuv3"; + qemu_fdt_setprop(vbi->fdt, "/pmu", "compatible", + compat, sizeof(compat)); + qemu_fdt_setprop_cells(vbi->fdt, "/pmu", "interrupts", + GIC_FDT_IRQ_TYPE_PPI, VIRTUAL_PMU_IRQ, irqflags); + } +} + static void create_v2m(VirtBoardInfo *vbi, qemu_irq *pic) { int i; @@ -1259,6 +1290,8 @@ static void machvirt_init(MachineState *machine) create_gic(vbi, pic, gic_version, vms->secure); + fdt_add_pmu_nodes(vbi, gic_version); + create_uart(vbi, pic, VIRT_UART, sysmem, serial_hds[0]); if (vms->secure) { |