1 /* 2 * Copyright (C) 2011 3 * Corscience GmbH & Co. KG - Simon Schwarz <schwarz@corscience.de> 4 * 5 * See file CREDITS for list of people who contributed to this 6 * project. 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License as 10 * published by the Free Software Foundation; either version 2 of 11 * the License, or (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 21 * MA 02111-1307 USA 22 */ 23 #include <common.h> 24 #include <config.h> 25 #include <spl.h> 26 #include <asm/io.h> 27 #include <nand.h> 28 29 void spl_nand_load_image(void) 30 { 31 struct image_header *header; 32 int *src __attribute__((unused)); 33 int *dst __attribute__((unused)); 34 35 debug("spl: nand - using hw ecc\n"); 36 nand_init(); 37 38 /*use CONFIG_SYS_TEXT_BASE as temporary storage area */ 39 header = (struct image_header *)(CONFIG_SYS_TEXT_BASE); 40 #ifdef CONFIG_SPL_OS_BOOT 41 if (!spl_start_uboot()) { 42 /* 43 * load parameter image 44 * load to temp position since nand_spl_load_image reads 45 * a whole block which is typically larger than 46 * CONFIG_CMD_SPL_WRITE_SIZE therefore may overwrite 47 * following sections like BSS 48 */ 49 nand_spl_load_image(CONFIG_CMD_SPL_NAND_OFS, 50 CONFIG_CMD_SPL_WRITE_SIZE, 51 (void *)CONFIG_SYS_TEXT_BASE); 52 /* copy to destintion */ 53 for (dst = (int *)CONFIG_SYS_SPL_ARGS_ADDR, 54 src = (int *)CONFIG_SYS_TEXT_BASE; 55 src < (int *)(CONFIG_SYS_TEXT_BASE + 56 CONFIG_CMD_SPL_WRITE_SIZE); 57 src++, dst++) { 58 writel(readl(src), dst); 59 } 60 61 /* load linux */ 62 nand_spl_load_image(CONFIG_SYS_NAND_SPL_KERNEL_OFFS, 63 CONFIG_SYS_NAND_PAGE_SIZE, (void *)header); 64 spl_parse_image_header(header); 65 if (header->ih_os == IH_OS_LINUX) { 66 /* happy - was a linux */ 67 nand_spl_load_image(CONFIG_SYS_NAND_SPL_KERNEL_OFFS, 68 spl_image.size, (void *)spl_image.load_addr); 69 nand_deselect(); 70 return; 71 } else { 72 puts("The Expected Linux image was not " 73 "found. Please check your NAND " 74 "configuration.\n"); 75 puts("Trying to start u-boot now...\n"); 76 } 77 } 78 #endif 79 #ifdef CONFIG_NAND_ENV_DST 80 nand_spl_load_image(CONFIG_ENV_OFFSET, 81 CONFIG_SYS_NAND_PAGE_SIZE, (void *)header); 82 spl_parse_image_header(header); 83 nand_spl_load_image(CONFIG_ENV_OFFSET, spl_image.size, 84 (void *)spl_image.load_addr); 85 #ifdef CONFIG_ENV_OFFSET_REDUND 86 nand_spl_load_image(CONFIG_ENV_OFFSET_REDUND, 87 CONFIG_SYS_NAND_PAGE_SIZE, (void *)header); 88 spl_parse_image_header(header); 89 nand_spl_load_image(CONFIG_ENV_OFFSET_REDUND, spl_image.size, 90 (void *)spl_image.load_addr); 91 #endif 92 #endif 93 /* Load u-boot */ 94 nand_spl_load_image(CONFIG_SYS_NAND_U_BOOT_OFFS, 95 CONFIG_SYS_NAND_PAGE_SIZE, (void *)header); 96 spl_parse_image_header(header); 97 nand_spl_load_image(CONFIG_SYS_NAND_U_BOOT_OFFS, 98 spl_image.size, (void *)spl_image.load_addr); 99 nand_deselect(); 100 } 101