diff options
Diffstat (limited to 'hw/loongarch/virt.c')
| -rw-r--r-- | hw/loongarch/virt.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c index 958be74fa1..c8a495ea30 100644 --- a/hw/loongarch/virt.c +++ b/hw/loongarch/virt.c @@ -42,6 +42,63 @@ #include "hw/display/ramfb.h" #include "hw/mem/pc-dimm.h" #include "sysemu/tpm.h" +#include "sysemu/block-backend.h" +#include "hw/block/flash.h" + +static void virt_flash_create(LoongArchMachineState *lams) +{ + DeviceState *dev = qdev_new(TYPE_PFLASH_CFI01); + + qdev_prop_set_uint64(dev, "sector-length", VIRT_FLASH_SECTOR_SIZE); + qdev_prop_set_uint8(dev, "width", 4); + qdev_prop_set_uint8(dev, "device-width", 2); + qdev_prop_set_bit(dev, "big-endian", false); + qdev_prop_set_uint16(dev, "id0", 0x89); + qdev_prop_set_uint16(dev, "id1", 0x18); + qdev_prop_set_uint16(dev, "id2", 0x00); + qdev_prop_set_uint16(dev, "id3", 0x00); + qdev_prop_set_string(dev, "name", "virt.flash"); + object_property_add_child(OBJECT(lams), "virt.flash", OBJECT(dev)); + object_property_add_alias(OBJECT(lams), "pflash", + OBJECT(dev), "drive"); + + lams->flash = PFLASH_CFI01(dev); +} + +static void virt_flash_map(LoongArchMachineState *lams, + MemoryRegion *sysmem) +{ + PFlashCFI01 *flash = lams->flash; + DeviceState *dev = DEVICE(flash); + hwaddr base = VIRT_FLASH_BASE; + hwaddr size = VIRT_FLASH_SIZE; + + assert(QEMU_IS_ALIGNED(size, VIRT_FLASH_SECTOR_SIZE)); + assert(size / VIRT_FLASH_SECTOR_SIZE <= UINT32_MAX); + + qdev_prop_set_uint32(dev, "num-blocks", size / VIRT_FLASH_SECTOR_SIZE); + sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); + memory_region_add_subregion(sysmem, base, + sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0)); + +} + +static void fdt_add_flash_node(LoongArchMachineState *lams) +{ + MachineState *ms = MACHINE(lams); + char *nodename; + + hwaddr flash_base = VIRT_FLASH_BASE; + hwaddr flash_size = VIRT_FLASH_SIZE; + + nodename = g_strdup_printf("/flash@%" PRIx64, flash_base); + qemu_fdt_add_subnode(ms->fdt, nodename); + qemu_fdt_setprop_string(ms->fdt, nodename, "compatible", "cfi-flash"); + qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg", + 2, flash_base, 2, flash_size); + qemu_fdt_setprop_cell(ms->fdt, nodename, "bank-width", 4); + g_free(nodename); +} static void fdt_add_rtc_node(LoongArchMachineState *lams) { @@ -596,6 +653,9 @@ static void loongarch_firmware_init(LoongArchMachineState *lams) int bios_size; lams->bios_loaded = false; + + virt_flash_map(lams, get_system_memory()); + if (filename) { bios_name = qemu_find_file(QEMU_FILE_TYPE_BIOS, filename); if (!bios_name) { @@ -779,6 +839,7 @@ static void loongarch_init(MachineState *machine) loongarch_direct_kernel_boot(lams); } } + fdt_add_flash_node(lams); /* register reset function */ for (i = 0; i < machine->smp.cpus; i++) { lacpu = LOONGARCH_CPU(qemu_get_cpu(i)); @@ -838,6 +899,7 @@ static void loongarch_machine_initfn(Object *obj) lams->acpi = ON_OFF_AUTO_AUTO; lams->oem_id = g_strndup(ACPI_BUILD_APPNAME6, 6); lams->oem_table_id = g_strndup(ACPI_BUILD_APPNAME8, 8); + virt_flash_create(lams); } static bool memhp_type_supported(DeviceState *dev) |