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// 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 <image.h>
#include <mapmem.h>
#include <errno.h>
#include <asm/global_data.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;
if (force_reloc ||
(gd->ram_base <= image && image < gd->ram_base + gd->ram_size)) {
*relocated_addr = gd->ram_base + lhdr->text_offset;
} else {
*relocated_addr = image;
}
unmap_sysmem(lhdr);
return 0;
}
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