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