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 13 #if defined(CONFIG_SPL_NAND_RAW_ONLY) 14 int spl_nand_load_image(void) 15 { 16 nand_init(); 17 18 nand_spl_load_image(CONFIG_SYS_NAND_U_BOOT_OFFS, 19 CONFIG_SYS_NAND_U_BOOT_SIZE, 20 (void *)CONFIG_SYS_NAND_U_BOOT_DST); 21 spl_set_header_raw_uboot(); 22 nand_deselect(); 23 24 return 0; 25 } 26 #else 27 static int spl_nand_load_element(int offset, struct image_header *header) 28 { 29 int err; 30 31 err = nand_spl_load_image(offset, sizeof(*header), (void *)header); 32 if (err) 33 return err; 34 35 err = spl_parse_image_header(header); 36 if (err) 37 return err; 38 39 return nand_spl_load_image(offset, spl_image.size, 40 (void *)(unsigned long)spl_image.load_addr); 41 } 42 43 int spl_nand_load_image(void) 44 { 45 int err; 46 struct image_header *header; 47 int *src __attribute__((unused)); 48 int *dst __attribute__((unused)); 49 50 #ifdef CONFIG_SPL_NAND_SOFTECC 51 debug("spl: nand - using sw ecc\n"); 52 #else 53 debug("spl: nand - using hw ecc\n"); 54 #endif 55 nand_init(); 56 57 /*use CONFIG_SYS_TEXT_BASE as temporary storage area */ 58 header = (struct image_header *)(CONFIG_SYS_TEXT_BASE); 59 #ifdef CONFIG_SPL_OS_BOOT 60 if (!spl_start_uboot()) { 61 /* 62 * load parameter image 63 * load to temp position since nand_spl_load_image reads 64 * a whole block which is typically larger than 65 * CONFIG_CMD_SPL_WRITE_SIZE therefore may overwrite 66 * following sections like BSS 67 */ 68 nand_spl_load_image(CONFIG_CMD_SPL_NAND_OFS, 69 CONFIG_CMD_SPL_WRITE_SIZE, 70 (void *)CONFIG_SYS_TEXT_BASE); 71 /* copy to destintion */ 72 for (dst = (int *)CONFIG_SYS_SPL_ARGS_ADDR, 73 src = (int *)CONFIG_SYS_TEXT_BASE; 74 src < (int *)(CONFIG_SYS_TEXT_BASE + 75 CONFIG_CMD_SPL_WRITE_SIZE); 76 src++, dst++) { 77 writel(readl(src), dst); 78 } 79 80 /* load linux */ 81 nand_spl_load_image(CONFIG_SYS_NAND_SPL_KERNEL_OFFS, 82 sizeof(*header), (void *)header); 83 err = spl_parse_image_header(header); 84 if (err) 85 return err; 86 if (header->ih_os == IH_OS_LINUX) { 87 /* happy - was a linux */ 88 err = nand_spl_load_image( 89 CONFIG_SYS_NAND_SPL_KERNEL_OFFS, 90 spl_image.size, 91 (void *)spl_image.load_addr); 92 nand_deselect(); 93 return err; 94 } else { 95 puts("The Expected Linux image was not " 96 "found. Please check your NAND " 97 "configuration.\n"); 98 puts("Trying to start u-boot now...\n"); 99 } 100 } 101 #endif 102 #ifdef CONFIG_NAND_ENV_DST 103 spl_nand_load_element(CONFIG_ENV_OFFSET, header); 104 #ifdef CONFIG_ENV_OFFSET_REDUND 105 spl_nand_load_element(CONFIG_ENV_OFFSET_REDUND, header); 106 #endif 107 #endif 108 /* Load u-boot */ 109 err = spl_nand_load_element(CONFIG_SYS_NAND_U_BOOT_OFFS, header); 110 nand_deselect(); 111 return err; 112 } 113 #endif 114