1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (C) 2011
4 * Corscience GmbH & Co. KG - Simon Schwarz <schwarz@corscience.de>
5 */
6 #include <common.h>
7 #include <config.h>
8 #include <fdt_support.h>
9 #include <image.h>
10 #include <log.h>
11 #include <spl.h>
12 #include <asm/io.h>
13 #include <nand.h>
14 #include <linux/libfdt_env.h>
15 #include <fdt.h>
16
spl_nand_get_uboot_raw_page(void)17 uint32_t __weak spl_nand_get_uboot_raw_page(void)
18 {
19 return CONFIG_SYS_NAND_U_BOOT_OFFS;
20 }
21
22 #if defined(CONFIG_SPL_NAND_RAW_ONLY)
spl_nand_load_image(struct spl_image_info * spl_image,struct spl_boot_device * bootdev)23 static int spl_nand_load_image(struct spl_image_info *spl_image,
24 struct spl_boot_device *bootdev)
25 {
26 nand_init();
27
28 printf("Loading U-Boot from 0x%08x (size 0x%08x) to 0x%08x\n",
29 CONFIG_SYS_NAND_U_BOOT_OFFS, CONFIG_SYS_NAND_U_BOOT_SIZE,
30 CONFIG_SYS_NAND_U_BOOT_DST);
31
32 nand_spl_load_image(spl_nand_get_uboot_raw_page(),
33 CONFIG_SYS_NAND_U_BOOT_SIZE,
34 (void *)CONFIG_SYS_NAND_U_BOOT_DST);
35 spl_set_header_raw_uboot(spl_image);
36 nand_deselect();
37
38 return 0;
39 }
40 #else
41
spl_nand_fit_read(struct spl_load_info * load,ulong offs,ulong size,void * dst)42 static ulong spl_nand_fit_read(struct spl_load_info *load, ulong offs,
43 ulong size, void *dst)
44 {
45 ulong sector;
46 int err;
47
48 sector = *(int *)load->priv;
49 offs = sector + nand_spl_adjust_offset(sector, offs - sector);
50 err = nand_spl_load_image(offs, size, dst);
51 if (err)
52 return 0;
53
54 return size;
55 }
56
spl_nand_load_element(struct spl_image_info * spl_image,int offset,struct image_header * header)57 static int spl_nand_load_element(struct spl_image_info *spl_image,
58 int offset, struct image_header *header)
59 {
60 int err;
61
62 err = nand_spl_load_image(offset, sizeof(*header), (void *)header);
63 if (err)
64 return err;
65
66 if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
67 image_get_magic(header) == FDT_MAGIC) {
68 struct spl_load_info load;
69
70 debug("Found FIT\n");
71 load.dev = NULL;
72 load.priv = &offset;
73 load.filename = NULL;
74 load.bl_len = 1;
75 load.read = spl_nand_fit_read;
76 return spl_load_simple_fit(spl_image, &load, offset, header);
77 } else if (IS_ENABLED(CONFIG_SPL_LOAD_IMX_CONTAINER)) {
78 struct spl_load_info load;
79
80 load.dev = NULL;
81 load.priv = NULL;
82 load.filename = NULL;
83 load.bl_len = 1;
84 load.read = spl_nand_fit_read;
85 return spl_load_imx_container(spl_image, &load, offset);
86 } else {
87 err = spl_parse_image_header(spl_image, header);
88 if (err)
89 return err;
90 return nand_spl_load_image(offset, spl_image->size,
91 (void *)(ulong)spl_image->load_addr);
92 }
93 }
94
spl_nand_load_image(struct spl_image_info * spl_image,struct spl_boot_device * bootdev)95 static int spl_nand_load_image(struct spl_image_info *spl_image,
96 struct spl_boot_device *bootdev)
97 {
98 int err;
99 struct image_header *header;
100 int *src __attribute__((unused));
101 int *dst __attribute__((unused));
102
103 #ifdef CONFIG_SPL_NAND_SOFTECC
104 debug("spl: nand - using sw ecc\n");
105 #else
106 debug("spl: nand - using hw ecc\n");
107 #endif
108 nand_init();
109
110 header = spl_get_load_buffer(0, sizeof(*header));
111
112 #ifdef CONFIG_SPL_OS_BOOT
113 if (!spl_start_uboot()) {
114 /*
115 * load parameter image
116 * load to temp position since nand_spl_load_image reads
117 * a whole block which is typically larger than
118 * CONFIG_CMD_SPL_WRITE_SIZE therefore may overwrite
119 * following sections like BSS
120 */
121 nand_spl_load_image(CONFIG_CMD_SPL_NAND_OFS,
122 CONFIG_CMD_SPL_WRITE_SIZE,
123 (void *)CONFIG_SYS_TEXT_BASE);
124 /* copy to destintion */
125 for (dst = (int *)CONFIG_SYS_SPL_ARGS_ADDR,
126 src = (int *)CONFIG_SYS_TEXT_BASE;
127 src < (int *)(CONFIG_SYS_TEXT_BASE +
128 CONFIG_CMD_SPL_WRITE_SIZE);
129 src++, dst++) {
130 writel(readl(src), dst);
131 }
132
133 /* load linux */
134 nand_spl_load_image(CONFIG_SYS_NAND_SPL_KERNEL_OFFS,
135 sizeof(*header), (void *)header);
136 err = spl_parse_image_header(spl_image, header);
137 if (err)
138 return err;
139 if (header->ih_os == IH_OS_LINUX) {
140 /* happy - was a linux */
141 err = nand_spl_load_image(
142 CONFIG_SYS_NAND_SPL_KERNEL_OFFS,
143 spl_image->size,
144 (void *)spl_image->load_addr);
145 nand_deselect();
146 return err;
147 } else {
148 puts("The Expected Linux image was not "
149 "found. Please check your NAND "
150 "configuration.\n");
151 puts("Trying to start u-boot now...\n");
152 }
153 }
154 #endif
155 #ifdef CONFIG_NAND_ENV_DST
156 spl_nand_load_element(spl_image, CONFIG_ENV_OFFSET, header);
157 #ifdef CONFIG_ENV_OFFSET_REDUND
158 spl_nand_load_element(spl_image, CONFIG_ENV_OFFSET_REDUND, header);
159 #endif
160 #endif
161 /* Load u-boot */
162 err = spl_nand_load_element(spl_image, spl_nand_get_uboot_raw_page(),
163 header);
164 #ifdef CONFIG_SYS_NAND_U_BOOT_OFFS_REDUND
165 #if CONFIG_SYS_NAND_U_BOOT_OFFS != CONFIG_SYS_NAND_U_BOOT_OFFS_REDUND
166 if (err)
167 err = spl_nand_load_element(spl_image,
168 CONFIG_SYS_NAND_U_BOOT_OFFS_REDUND,
169 header);
170 #endif
171 #endif
172 nand_deselect();
173 return err;
174 }
175 #endif
176 /* Use priorty 1 so that Ubi can override this */
177 SPL_LOAD_IMAGE_METHOD("NAND", 1, BOOT_DEVICE_NAND, spl_nand_load_image);
178