1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (C) 2012 Stefan Roese <sr@denx.de>
4 */
5
6 #include <common.h>
7 #include <spl.h>
8
9 #ifdef CONFIG_SPL_LOAD_FIT
spl_nor_load_read(struct spl_load_info * load,ulong sector,ulong count,void * buf)10 static ulong spl_nor_load_read(struct spl_load_info *load, ulong sector,
11 ulong count, void *buf)
12 {
13 debug("%s: sector %lx, count %lx, buf %p\n",
14 __func__, sector, count, buf);
15 memcpy(buf, (void *)sector, count);
16
17 return count;
18 }
19 #endif
20
spl_nor_load_image(struct spl_image_info * spl_image,struct spl_boot_device * bootdev)21 static int spl_nor_load_image(struct spl_image_info *spl_image,
22 struct spl_boot_device *bootdev)
23 {
24 int ret;
25 __maybe_unused const struct image_header *header;
26 __maybe_unused struct spl_load_info load;
27
28 /*
29 * Loading of the payload to SDRAM is done with skipping of
30 * the mkimage header in this SPL NOR driver
31 */
32 spl_image->flags |= SPL_COPY_PAYLOAD_ONLY;
33
34 #ifdef CONFIG_SPL_OS_BOOT
35 if (!spl_start_uboot()) {
36 /*
37 * Load Linux from its location in NOR flash to its defined
38 * location in SDRAM
39 */
40 header = (const struct image_header *)CONFIG_SYS_OS_BASE;
41 #ifdef CONFIG_SPL_LOAD_FIT
42 if (image_get_magic(header) == FDT_MAGIC) {
43 debug("Found FIT\n");
44 load.bl_len = 1;
45 load.read = spl_nor_load_read;
46
47 ret = spl_load_simple_fit(spl_image, &load,
48 CONFIG_SYS_OS_BASE,
49 (void *)header);
50
51 return ret;
52 }
53 #endif
54 if (image_get_os(header) == IH_OS_LINUX) {
55 /* happy - was a Linux */
56
57 ret = spl_parse_image_header(spl_image, header);
58 if (ret)
59 return ret;
60
61 memcpy((void *)spl_image->load_addr,
62 (void *)(CONFIG_SYS_OS_BASE +
63 sizeof(struct image_header)),
64 spl_image->size);
65 #ifdef CONFIG_SYS_FDT_BASE
66 spl_image->arg = (void *)CONFIG_SYS_FDT_BASE;
67 #endif
68
69 return 0;
70 } else {
71 puts("The Expected Linux image was not found.\n"
72 "Please check your NOR configuration.\n"
73 "Trying to start u-boot now...\n");
74 }
75 }
76 #endif
77
78 /*
79 * Load real U-Boot from its location in NOR flash to its
80 * defined location in SDRAM
81 */
82 #ifdef CONFIG_SPL_LOAD_FIT
83 header = (const struct image_header *)CONFIG_SYS_UBOOT_BASE;
84 if (image_get_magic(header) == FDT_MAGIC) {
85 debug("Found FIT format U-Boot\n");
86 load.bl_len = 1;
87 load.read = spl_nor_load_read;
88 ret = spl_load_simple_fit(spl_image, &load,
89 CONFIG_SYS_UBOOT_BASE,
90 (void *)header);
91
92 return ret;
93 }
94 #endif
95 ret = spl_parse_image_header(spl_image,
96 (const struct image_header *)CONFIG_SYS_UBOOT_BASE);
97 if (ret)
98 return ret;
99
100 memcpy((void *)(unsigned long)spl_image->load_addr,
101 (void *)(CONFIG_SYS_UBOOT_BASE + sizeof(struct image_header)),
102 spl_image->size);
103
104 return 0;
105 }
106 SPL_LOAD_IMAGE_METHOD("NOR", 0, BOOT_DEVICE_NOR, spl_nor_load_image);
107