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