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hw/loongarch: Add uefi bios loading support 

Add uefi bios loading support, now only uefi bios is porting to
loongarch virt machine.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Message-Id: <20220712083206.4187715-3-yangxiaojuan@loongson.cn>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Xiaojuan Yang 2022-07-12 16:32:02 +08:00 committed by Richard Henderson
parent 27ad7564e7
commit 98afb0d4e9
2 changed files with 38 additions and 0 deletions
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34
hw/loongarch/loongson3.c
View File

@ -310,6 +310,37 @@ static void loongarch_irq_init(LoongArchMachineState *lams)
loongarch_devices_init(pch_pic);
}
static void loongarch_firmware_init(LoongArchMachineState *lams)
{
char *filename = MACHINE(lams)->firmware;
char *bios_name = NULL;
int bios_size;
lams->bios_loaded = false;
if (filename) {
bios_name = qemu_find_file(QEMU_FILE_TYPE_BIOS, filename);
if (!bios_name) {
error_report("Could not find ROM image '%s'", filename);
exit(1);
}
bios_size = load_image_targphys(bios_name, VIRT_BIOS_BASE, VIRT_BIOS_SIZE);
if (bios_size < 0) {
error_report("Could not load ROM image '%s'", bios_name);
exit(1);
}
g_free(bios_name);
memory_region_init_ram(&lams->bios, NULL, "loongarch.bios",
VIRT_BIOS_SIZE, &error_fatal);
memory_region_set_readonly(&lams->bios, true);
memory_region_add_subregion(get_system_memory(), VIRT_BIOS_BASE, &lams->bios);
lams->bios_loaded = true;
}
}
static void reset_load_elf(void *opaque)
{
LoongArchCPU *cpu = opaque;
@ -369,6 +400,9 @@ static void loongarch_init(MachineState *machine)
get_system_io(), 0, LOONGARCH_ISA_IO_SIZE);
memory_region_add_subregion(address_space_mem, LOONGARCH_ISA_IO_BASE,
&lams->isa_io);
/* load the BIOS image. */
loongarch_firmware_init(lams);
/* fw_cfg init */
lams->fw_cfg = loongarch_fw_cfg_init(ram_size, machine);
rom_set_fw(lams->fw_cfg);

4
include/hw/loongarch/virt.h
View File

@ -18,6 +18,8 @@
#define LOONGARCH_ISA_IO_BASE 0x18000000UL
#define LOONGARCH_ISA_IO_SIZE 0x0004000
#define VIRT_FWCFG_BASE 0x1e020000UL
#define VIRT_BIOS_BASE 0x1c000000UL
#define VIRT_BIOS_SIZE (4 * MiB)
struct LoongArchMachineState {
/*< private >*/
@ -27,6 +29,8 @@ struct LoongArchMachineState {
MemoryRegion lowmem;
MemoryRegion highmem;
MemoryRegion isa_io;
MemoryRegion bios;
bool bios_loaded;
/* State for other subsystems/APIs: */
FWCfgState *fw_cfg;
};