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hw/loongarch: Add load initrd 

we load initrd ramdisk after kernel_high address

Signed-off-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
Message-Id: <20240426091551.2397867-3-gaosong@loongson.cn>
This commit is contained in:
Song Gao 2024-04-26 17:15:36 +08:00
parent d771ca1c10
commit 02307a678c
1 changed files with 27 additions and 1 deletions
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28
hw/loongarch/boot.c
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@ -22,7 +22,8 @@ static uint64_t cpu_loongarch_virt_to_phys(void *opaque, uint64_t addr)
static int64_t load_kernel_info(struct loongarch_boot_info *info)
{
uint64_t kernel_entry, kernel_low, kernel_high;
uint64_t kernel_entry, kernel_low, kernel_high, initrd_size;
ram_addr_t initrd_offset;
ssize_t kernel_size;
kernel_size = load_elf(info->kernel_filename, NULL,
@ -37,6 +38,31 @@ static int64_t load_kernel_info(struct loongarch_boot_info *info)
load_elf_strerror(kernel_size));
exit(1);
}
if (info->initrd_filename) {
initrd_size = get_image_size(info->initrd_filename);
if (initrd_size > 0) {
initrd_offset = ROUND_UP(kernel_high + 4 * kernel_size, 64 * KiB);
if (initrd_offset + initrd_size > info->ram_size) {
error_report("memory too small for initial ram disk '%s'",
info->initrd_filename);
exit(1);
}
initrd_size = load_image_targphys(info->initrd_filename, initrd_offset,
info->ram_size - initrd_offset);
}
if (initrd_size == (target_ulong)-1) {
error_report("could not load initial ram disk '%s'",
info->initrd_filename);
exit(1);
}
} else {
initrd_size = 0;
}
return kernel_entry;
}