diff options
| -rw-r--r-- | hw/loongarch/Kconfig | 1 | ||||
| -rw-r--r-- | hw/loongarch/virt.c | 33 | ||||
| -rw-r--r-- | include/hw/loongarch/virt.h | 1 | ||||
| -rw-r--r-- | include/hw/pci-host/ls7a.h | 5 |
4 files changed, 40 insertions, 0 deletions
diff --git a/hw/loongarch/Kconfig b/hw/loongarch/Kconfig index 1deea83626..fef55c5638 100644 --- a/hw/loongarch/Kconfig +++ b/hw/loongarch/Kconfig @@ -8,6 +8,7 @@ config LOONGARCH_VIRT select SERIAL select SERIAL_ISA select VIRTIO_PCI + select PLATFORM_BUS select LOONGARCH_IPI select LOONGARCH_PCH_PIC select LOONGARCH_PCH_MSI diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c index 68b59a6c9f..5fd3834c0a 100644 --- a/hw/loongarch/virt.c +++ b/hw/loongarch/virt.c @@ -37,6 +37,8 @@ #include "hw/mem/nvdimm.h" #include "sysemu/device_tree.h" #include <libfdt.h> +#include "hw/core/sysbus-fdt.h" +#include "hw/platform-bus.h" static void create_fdt(LoongArchMachineState *lams) { @@ -345,6 +347,31 @@ static DeviceState *create_acpi_ged(DeviceState *pch_pic, LoongArchMachineState return dev; } +static DeviceState *create_platform_bus(DeviceState *pch_pic) +{ + DeviceState *dev; + SysBusDevice *sysbus; + int i, irq; + MemoryRegion *sysmem = get_system_memory(); + + dev = qdev_new(TYPE_PLATFORM_BUS_DEVICE); + dev->id = g_strdup(TYPE_PLATFORM_BUS_DEVICE); + qdev_prop_set_uint32(dev, "num_irqs", VIRT_PLATFORM_BUS_NUM_IRQS); + qdev_prop_set_uint32(dev, "mmio_size", VIRT_PLATFORM_BUS_SIZE); + sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); + + sysbus = SYS_BUS_DEVICE(dev); + for (i = 0; i < VIRT_PLATFORM_BUS_NUM_IRQS; i++) { + irq = VIRT_PLATFORM_BUS_IRQ - PCH_PIC_IRQ_OFFSET + i; + sysbus_connect_irq(sysbus, i, qdev_get_gpio_in(pch_pic, irq)); + } + + memory_region_add_subregion(sysmem, + VIRT_PLATFORM_BUS_BASEADDRESS, + sysbus_mmio_get_region(sysbus, 0)); + return dev; +} + static void loongarch_devices_init(DeviceState *pch_pic, LoongArchMachineState *lams) { DeviceState *gpex_dev; @@ -420,6 +447,8 @@ static void loongarch_devices_init(DeviceState *pch_pic, LoongArchMachineState * memory_region_add_subregion(get_system_memory(), PM_BASE, pm_mem); /* acpi ged */ lams->acpi_ged = create_acpi_ged(pch_pic, lams); + /* platform bus */ + lams->platform_bus_dev = create_platform_bus(pch_pic); } static void loongarch_irq_init(LoongArchMachineState *lams) @@ -725,6 +754,10 @@ static void loongarch_init(MachineState *machine) /* Initialize the IO interrupt subsystem */ loongarch_irq_init(lams); fdt_add_irqchip_node(lams); + platform_bus_add_all_fdt_nodes(machine->fdt, "/intc", + VIRT_PLATFORM_BUS_BASEADDRESS, + VIRT_PLATFORM_BUS_SIZE, + VIRT_PLATFORM_BUS_IRQ); lams->machine_done.notify = virt_machine_done; qemu_add_machine_init_done_notifier(&lams->machine_done); fdt_add_pcie_node(lams); diff --git a/include/hw/loongarch/virt.h b/include/hw/loongarch/virt.h index 92b84de1c5..64c90b80d2 100644 --- a/include/hw/loongarch/virt.h +++ b/include/hw/loongarch/virt.h @@ -49,6 +49,7 @@ struct LoongArchMachineState { char *oem_table_id; DeviceState *acpi_ged; int fdt_size; + DeviceState *platform_bus_dev; }; #define TYPE_LOONGARCH_MACHINE MACHINE_TYPE_NAME("virt") diff --git a/include/hw/pci-host/ls7a.h b/include/hw/pci-host/ls7a.h index cdde0af1f8..9bd875ca8b 100644 --- a/include/hw/pci-host/ls7a.h +++ b/include/hw/pci-host/ls7a.h @@ -42,4 +42,9 @@ #define VIRT_RTC_REG_BASE (VIRT_MISC_REG_BASE + 0x00050100) #define VIRT_RTC_LEN 0x100 #define VIRT_SCI_IRQ (PCH_PIC_IRQ_OFFSET + 4) + +#define VIRT_PLATFORM_BUS_BASEADDRESS 0x16000000 +#define VIRT_PLATFORM_BUS_SIZE 0x2000000 +#define VIRT_PLATFORM_BUS_NUM_IRQS 2 +#define VIRT_PLATFORM_BUS_IRQ 69 #endif |