hw/loongarch: Add LoongArch virt power manager support.
This is a placeholder for missing ACPI, and will eventually be replaced. Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn> Signed-off-by: Song Gao <gaosong@loongson.cn> Acked-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220606124333.2060567-41-yangxiaojuan@loongson.cn> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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@ -31,6 +31,48 @@
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#include "target/loongarch/cpu.h"
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#include "target/loongarch/cpu.h"
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#define PM_BASE 0x10080000
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#define PM_SIZE 0x100
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#define PM_CTRL 0x10
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/*
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* This is a placeholder for missing ACPI,
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* and will eventually be replaced.
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*/
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static uint64_t loongarch_virt_pm_read(void *opaque, hwaddr addr, unsigned size)
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{
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return 0;
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}
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static void loongarch_virt_pm_write(void *opaque, hwaddr addr,
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uint64_t val, unsigned size)
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{
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if (addr != PM_CTRL) {
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return;
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}
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switch (val) {
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case 0x00:
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qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
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return;
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case 0xff:
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qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
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return;
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default:
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return;
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}
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}
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static const MemoryRegionOps loongarch_virt_pm_ops = {
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.read = loongarch_virt_pm_read,
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.write = loongarch_virt_pm_write,
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.endianness = DEVICE_NATIVE_ENDIAN,
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.valid = {
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.min_access_size = 1,
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.max_access_size = 1
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}
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};
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static struct _loaderparams {
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static struct _loaderparams {
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uint64_t ram_size;
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uint64_t ram_size;
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const char *kernel_filename;
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const char *kernel_filename;
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@ -67,7 +109,7 @@ static void loongarch_devices_init(DeviceState *pch_pic)
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SysBusDevice *d;
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SysBusDevice *d;
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PCIBus *pci_bus;
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PCIBus *pci_bus;
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MemoryRegion *ecam_alias, *ecam_reg, *pio_alias, *pio_reg;
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MemoryRegion *ecam_alias, *ecam_reg, *pio_alias, *pio_reg;
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MemoryRegion *mmio_alias, *mmio_reg;
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MemoryRegion *mmio_alias, *mmio_reg, *pm_mem;
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int i;
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int i;
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gpex_dev = qdev_new(TYPE_GPEX_HOST);
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gpex_dev = qdev_new(TYPE_GPEX_HOST);
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@ -132,6 +174,11 @@ static void loongarch_devices_init(DeviceState *pch_pic)
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sysbus_create_simple("ls7a_rtc", LS7A_RTC_REG_BASE,
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sysbus_create_simple("ls7a_rtc", LS7A_RTC_REG_BASE,
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qdev_get_gpio_in(pch_pic,
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qdev_get_gpio_in(pch_pic,
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LS7A_RTC_IRQ - PCH_PIC_IRQ_OFFSET));
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LS7A_RTC_IRQ - PCH_PIC_IRQ_OFFSET));
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pm_mem = g_new(MemoryRegion, 1);
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memory_region_init_io(pm_mem, NULL, &loongarch_virt_pm_ops,
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NULL, "loongarch_virt_pm", PM_SIZE);
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memory_region_add_subregion(get_system_memory(), PM_BASE, pm_mem);
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}
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}
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static void loongarch_irq_init(LoongArchMachineState *lams)
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static void loongarch_irq_init(LoongArchMachineState *lams)
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