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loongarch: Change the UEFI loading mode to loongarch

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The UEFI loading mode in loongarch is very different
from that in other architectures:loongarch's UEFI code
is in rom, while other architectures' UEFI code is in flash.

loongarch UEFI can be loaded as follows:
-machine virt,pflash=pflash0-format
-bios ./QEMU_EFI.fd

Other architectures load UEFI using the following methods:
-machine virt,pflash0=pflash0-format,pflash1=pflash1-format

loongarch's UEFI loading method makes qemu and libvirt incompatible
when using NVRAM, and the cost of loongarch's current loading method
far outweighs the benefits, so we decided to use the same UEFI loading
scheme as other architectures.

Cc: Andrea Bolognani <abologna@redhat.com>
Cc: maobibo@loongson.cn
Cc: Philippe Mathieu-Daudé <philmd@linaro.org>
Cc: Song Gao <gaosong@loongson.cn>
Cc: zhaotianrui@loongson.cn
Signed-off-by: Xianglai Li <lixianglai@loongson.cn>
Tested-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Song Gao <gaosong@loongson.cn>
Message-Id: <0bd892aa9b88e0f4cc904cb70efd0251fc1cde29.1708336919.git.lixianglai@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
This commit is contained in:
Xianglai Li 2024-02-19 18:34:14 +08:00 • committed by Song Gao
parent bfe8020c81
commit c6e9847fc4
3 changed files with 111 additions and 37 deletions
Download patch file Download diff file Expand all files Collapse all files

109
hw/loongarch/virt.c
View file

@ -54,7 +54,9 @@ struct loaderparams {
const char *initrd_filename;
};
static void virt_flash_create(LoongArchMachineState *lams)
static PFlashCFI01 *virt_flash_create1(LoongArchMachineState *lams,
const char *name,
const char *alias_prop_name)
{
DeviceState *dev = qdev_new(TYPE_PFLASH_CFI01);
@ -66,45 +68,78 @@ static void virt_flash_create(LoongArchMachineState *lams)
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",
qdev_prop_set_string(dev, "name", name);
object_property_add_child(OBJECT(lams), name, OBJECT(dev));
object_property_add_alias(OBJECT(lams), alias_prop_name,
OBJECT(dev), "drive");
return PFLASH_CFI01(dev);
}
lams->flash = PFLASH_CFI01(dev);
static void virt_flash_create(LoongArchMachineState *lams)
{
lams->flash[0] = virt_flash_create1(lams, "virt.flash0", "pflash0");
lams->flash[1] = virt_flash_create1(lams, "virt.flash1", "pflash1");
}
static void virt_flash_map1(PFlashCFI01 *flash,
hwaddr base, hwaddr size,
MemoryRegion *sysmem)
{
DeviceState *dev = DEVICE(flash);
BlockBackend *blk;
hwaddr real_size = size;
blk = pflash_cfi01_get_blk(flash);
if (blk) {
real_size = blk_getlength(blk);
assert(real_size && real_size <= size);
}
assert(QEMU_IS_ALIGNED(real_size, VIRT_FLASH_SECTOR_SIZE));
assert(real_size / VIRT_FLASH_SECTOR_SIZE <= UINT32_MAX);
qdev_prop_set_uint32(dev, "num-blocks", real_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 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));
PFlashCFI01 *flash0 = lams->flash[0];
PFlashCFI01 *flash1 = lams->flash[1];
virt_flash_map1(flash0, VIRT_FLASH0_BASE, VIRT_FLASH0_SIZE, sysmem);
virt_flash_map1(flash1, VIRT_FLASH1_BASE, VIRT_FLASH1_SIZE, sysmem);
}
static void fdt_add_flash_node(LoongArchMachineState *lams)
{
MachineState *ms = MACHINE(lams);
char *nodename;
MemoryRegion *flash_mem;
hwaddr flash_base = VIRT_FLASH_BASE;
hwaddr flash_size = VIRT_FLASH_SIZE;
hwaddr flash0_base;
hwaddr flash0_size;
nodename = g_strdup_printf("/flash@%" PRIx64, flash_base);
hwaddr flash1_base;
hwaddr flash1_size;
flash_mem = pflash_cfi01_get_memory(lams->flash[0]);
flash0_base = flash_mem->addr;
flash0_size = memory_region_size(flash_mem);
flash_mem = pflash_cfi01_get_memory(lams->flash[1]);
flash1_base = flash_mem->addr;
flash1_size = memory_region_size(flash_mem);
nodename = g_strdup_printf("/flash@%" PRIx64, flash0_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);
2, flash0_base, 2, flash0_size,
2, flash1_base, 2, flash1_size);
qemu_fdt_setprop_cell(ms->fdt, nodename, "bank-width", 4);
g_free(nodename);
}
@ -637,12 +672,32 @@ static void loongarch_firmware_init(LoongArchMachineState *lams)
{
char *filename = MACHINE(lams)->firmware;
char *bios_name = NULL;
int bios_size;
int bios_size, i;
BlockBackend *pflash_blk0;
MemoryRegion *mr;
lams->bios_loaded = false;
/* Map legacy -drive if=pflash to machine properties */
for (i = 0; i < ARRAY_SIZE(lams->flash); i++) {
pflash_cfi01_legacy_drive(lams->flash[i],
drive_get(IF_PFLASH, 0, i));
}
virt_flash_map(lams, get_system_memory());
pflash_blk0 = pflash_cfi01_get_blk(lams->flash[0]);
if (pflash_blk0) {
if (filename) {
error_report("cannot use both '-bios' and '-drive if=pflash'"
"options at once");
exit(1);
}
lams->bios_loaded = true;
return;
}
if (filename) {
bios_name = qemu_find_file(QEMU_FILE_TYPE_BIOS, filename);
if (!bios_name) {
@ -650,21 +705,15 @@ static void loongarch_firmware_init(LoongArchMachineState *lams)
exit(1);
}
bios_size = load_image_targphys(bios_name, VIRT_BIOS_BASE, VIRT_BIOS_SIZE);
mr = sysbus_mmio_get_region(SYS_BUS_DEVICE(lams->flash[0]), 0);
bios_size = load_image_mr(bios_name, mr);
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)