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