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[PATCH v2 02/17] hw/loongarch: Add load initrd
From: |
Song Gao |
Subject: |
[PATCH v2 02/17] hw/loongarch: Add load initrd |
Date: |
Mon, 18 Dec 2023 17:00:44 +0800 |
we load initrd ramdisk after kernel_high address
Signed-off-by: Song Gao <gaosong@loongson.cn>
---
hw/loongarch/boot.c | 29 ++++++++++++++++++++++++++++-
1 file changed, 28 insertions(+), 1 deletion(-)
diff --git a/hw/loongarch/boot.c b/hw/loongarch/boot.c
index 9f25ea5847..2be6dfb037 100644
--- a/hw/loongarch/boot.c
+++ b/hw/loongarch/boot.c
@@ -21,7 +21,8 @@ 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,
@@ -36,6 +37,32 @@ 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, 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 {
+ error_report("Need initrd!");
+ exit(1);
+ }
+
return kernel_entry;
}
--
2.25.1