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