u-boot/arch/riscv/lib/image.c
Atish Patra 70d64a4c76 RISC-V: Align boot image header with Linux
The released Linux boot image header in v5.3 is different from the
one present in U-Boot. Align the header with the new version. The
changes in Linux are backward compatible. Previous U-Boot releases
with older header will continue to work as well. As v5.3 kernel is
the first one to support image header, there is no compatibility
issue between new U-Boot (with this patch) and older kernel.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Rick Chen <rick@andestech.com>
2019-10-18 09:04:19 +08:00

56 lines
1.4 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2019 Western Digital Corporation or its affiliates.
* Authors:
* Atish Patra <atish.patra@wdc.com>
* Based on arm/lib/image.c
*/
#include <common.h>
#include <mapmem.h>
#include <errno.h>
#include <linux/sizes.h>
#include <linux/stddef.h>
DECLARE_GLOBAL_DATA_PTR;
/* ASCII version of "RSC\0x5" defined in Linux kernel */
#define LINUX_RISCV_IMAGE_MAGIC 0x05435352
struct linux_image_h {
uint32_t code0; /* Executable code */
uint32_t code1; /* Executable code */
uint64_t text_offset; /* Image load offset */
uint64_t image_size; /* Effective Image size */
uint64_t flags; /* kernel flags (little endian) */
uint32_t version; /* version of the header */
uint32_t res1; /* reserved */
uint64_t res2; /* reserved */
uint64_t res3; /* reserved */
uint32_t magic; /* Magic number */
uint32_t res4; /* reserved */
};
int booti_setup(ulong image, ulong *relocated_addr, ulong *size,
bool force_reloc)
{
struct linux_image_h *lhdr;
lhdr = (struct linux_image_h *)map_sysmem(image, 0);
if (lhdr->magic != LINUX_RISCV_IMAGE_MAGIC) {
puts("Bad Linux RISCV Image magic!\n");
return -EINVAL;
}
if (lhdr->image_size == 0) {
puts("Image lacks image_size field, error!\n");
return -EINVAL;
}
*size = lhdr->image_size;
*relocated_addr = gd->ram_base + lhdr->text_offset;
unmap_sysmem(lhdr);
return 0;
}