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
spl_nor_load_read(struct spl_load_info * load,ulong sector,ulong count,void * buf)9 static ulong spl_nor_load_read(struct spl_load_info *load, ulong sector,
10 ulong count, void *buf)
11 {
12 debug("%s: sector %lx, count %lx, buf %p\n",
13 __func__, sector, count, buf);
14 memcpy(buf, (void *)sector, count);
15
16 return count;
17 }
18
spl_nor_get_uboot_base(void)19 unsigned long __weak spl_nor_get_uboot_base(void)
20 {
21 return CONFIG_SYS_UBOOT_BASE;
22 }
23
spl_nor_load_image(struct spl_image_info * spl_image,struct spl_boot_device * bootdev)24 static int spl_nor_load_image(struct spl_image_info *spl_image,
25 struct spl_boot_device *bootdev)
26 {
27 int ret;
28 __maybe_unused const struct image_header *header;
29 __maybe_unused struct spl_load_info load;
30
31 /*
32 * Loading of the payload to SDRAM is done with skipping of
33 * the mkimage header in this SPL NOR driver
34 */
35 spl_image->flags |= SPL_COPY_PAYLOAD_ONLY;
36
37 #ifdef CONFIG_SPL_OS_BOOT
38 if (!spl_start_uboot()) {
39 /*
40 * Load Linux from its location in NOR flash to its defined
41 * location in SDRAM
42 */
43 header = (const struct image_header *)CONFIG_SYS_OS_BASE;
44 #ifdef CONFIG_SPL_LOAD_FIT
45 if (image_get_magic(header) == FDT_MAGIC) {
46 debug("Found FIT\n");
47 load.bl_len = 1;
48 load.read = spl_nor_load_read;
49
50 ret = spl_load_simple_fit(spl_image, &load,
51 CONFIG_SYS_OS_BASE,
52 (void *)header);
53
54 #if defined CONFIG_SYS_SPL_ARGS_ADDR && defined CONFIG_CMD_SPL_NOR_OFS
55 memcpy((void *)CONFIG_SYS_SPL_ARGS_ADDR,
56 (void *)CONFIG_CMD_SPL_NOR_OFS,
57 CONFIG_CMD_SPL_WRITE_SIZE);
58 #endif
59 return ret;
60 }
61 #endif
62 if (image_get_os(header) == IH_OS_LINUX) {
63 /* happy - was a Linux */
64
65 ret = spl_parse_image_header(spl_image, header);
66 if (ret)
67 return ret;
68
69 memcpy((void *)spl_image->load_addr,
70 (void *)(CONFIG_SYS_OS_BASE +
71 sizeof(struct image_header)),
72 spl_image->size);
73 #ifdef CONFIG_SYS_FDT_BASE
74 spl_image->arg = (void *)CONFIG_SYS_FDT_BASE;
75 #endif
76
77 return 0;
78 } else {
79 puts("The Expected Linux image was not found.\n"
80 "Please check your NOR configuration.\n"
81 "Trying to start u-boot now...\n");
82 }
83 }
84 #endif
85
86 /*
87 * Load real U-Boot from its location in NOR flash to its
88 * defined location in SDRAM
89 */
90 #ifdef CONFIG_SPL_LOAD_FIT
91 header = (const struct image_header *)spl_nor_get_uboot_base();
92 if (image_get_magic(header) == FDT_MAGIC) {
93 debug("Found FIT format U-Boot\n");
94 load.bl_len = 1;
95 load.read = spl_nor_load_read;
96 ret = spl_load_simple_fit(spl_image, &load,
97 spl_nor_get_uboot_base(),
98 (void *)header);
99
100 return ret;
101 }
102 #endif
103 if (IS_ENABLED(CONFIG_SPL_LOAD_IMX_CONTAINER)) {
104 load.bl_len = 1;
105 load.read = spl_nor_load_read;
106 return spl_load_imx_container(spl_image, &load,
107 spl_nor_get_uboot_base());
108 }
109
110 ret = spl_parse_image_header(spl_image,
111 (const struct image_header *)spl_nor_get_uboot_base());
112 if (ret)
113 return ret;
114
115 memcpy((void *)(unsigned long)spl_image->load_addr,
116 (void *)(spl_nor_get_uboot_base() + sizeof(struct image_header)),
117 spl_image->size);
118
119 return 0;
120 }
121 SPL_LOAD_IMAGE_METHOD("NOR", 0, BOOT_DEVICE_NOR, spl_nor_load_image);
122