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Atish Patra3cedc972019-05-06 17:49:39 -07001// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Copyright (C) 2019 Western Digital Corporation or its affiliates.
4 * Authors:
5 * Atish Patra <atish.patra@wdc.com>
6 * Based on arm/lib/image.c
7 */
8
9#include <common.h>
Simon Glass4d72caa2020-05-10 11:40:01 -060010#include <image.h>
Atish Patra3cedc972019-05-06 17:49:39 -070011#include <mapmem.h>
12#include <errno.h>
Simon Glass401d1c42020-10-30 21:38:53 -060013#include <asm/global_data.h>
Atish Patra3cedc972019-05-06 17:49:39 -070014#include <linux/sizes.h>
15#include <linux/stddef.h>
16
17DECLARE_GLOBAL_DATA_PTR;
18
Atish Patra70d64a42019-10-09 10:34:17 -070019/* ASCII version of "RSC\0x5" defined in Linux kernel */
20#define LINUX_RISCV_IMAGE_MAGIC 0x05435352
Atish Patra3cedc972019-05-06 17:49:39 -070021
22struct linux_image_h {
23 uint32_t code0; /* Executable code */
24 uint32_t code1; /* Executable code */
25 uint64_t text_offset; /* Image load offset */
26 uint64_t image_size; /* Effective Image size */
Atish Patra70d64a42019-10-09 10:34:17 -070027 uint64_t flags; /* kernel flags (little endian) */
28 uint32_t version; /* version of the header */
29 uint32_t res1; /* reserved */
Atish Patra3cedc972019-05-06 17:49:39 -070030 uint64_t res2; /* reserved */
31 uint64_t res3; /* reserved */
Atish Patra70d64a42019-10-09 10:34:17 -070032 uint32_t magic; /* Magic number */
Atish Patra3cedc972019-05-06 17:49:39 -070033 uint32_t res4; /* reserved */
Atish Patra3cedc972019-05-06 17:49:39 -070034};
35
36int booti_setup(ulong image, ulong *relocated_addr, ulong *size,
37 bool force_reloc)
38{
39 struct linux_image_h *lhdr;
40
41 lhdr = (struct linux_image_h *)map_sysmem(image, 0);
42
43 if (lhdr->magic != LINUX_RISCV_IMAGE_MAGIC) {
44 puts("Bad Linux RISCV Image magic!\n");
45 return -EINVAL;
46 }
47
48 if (lhdr->image_size == 0) {
49 puts("Image lacks image_size field, error!\n");
50 return -EINVAL;
51 }
52 *size = lhdr->image_size;
53 *relocated_addr = gd->ram_base + lhdr->text_offset;
54
55 unmap_sysmem(lhdr);
56
57 return 0;
58}