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