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/*
* Copyright (C) 2011
* Heiko Schocher, DENX Software Engineering, hs@denx.de.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <nand.h>
#ifdef CONFIG_SPL_CHECK_IMAGE
int check_uimage(unsigned int *buf);
#endif
/*
* The main entry for NAND booting. It's necessary that SDRAM is already
* configured and available since this code loads the main U-Boot image
* from NAND into SDRAM and starts it from there.
*/
void nand_boot(void)
{
int ret = 0;
__attribute__((noreturn)) void (*uboot)(void);
/*
* Load U-Boot image from NAND into RAM
*/
ret = nand_spl_load_image(CONFIG_SYS_NAND_U_BOOT_OFFS,
CONFIG_SYS_NAND_U_BOOT_SIZE,
(void *)CONFIG_SYS_NAND_U_BOOT_DST);
if (0 != ret){
printf("Read u_boot from nand failed. \n");
return;
}
#ifdef CONFIG_NAND_ENV_DST
ret = nand_spl_load_image(CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE,
(void *)CONFIG_NAND_ENV_DST);
if (0 != ret){
printf("Read env from nand failed . \n");
return;
}
#ifdef CONFIG_ENV_OFFSET_REDUND
ret = nand_spl_load_image(CONFIG_ENV_OFFSET_REDUND, CONFIG_ENV_SIZE,
(void *)CONFIG_NAND_ENV_DST + CONFIG_ENV_SIZE);
if (0 != ret){
printf("Read redund from nand failed . \n");
return;
}
#endif
#endif
#ifdef CONFIG_SPL_CHECK_IMAGE
if (check_uimage((unsigned int*)CONFIG_SYS_NAND_U_BOOT_DST)) {
printf("Nand boot failed:DDR error or nand data error!\n");
#ifdef CONFIG_RDA_FPGA
nand_dirty_block_erase(0);
#endif
printf("please try to load uboot.img or reset!\n");
return;
}
#endif
/*
* Jump to U-Boot image
*/
uboot = (void *)CONFIG_SYS_NAND_U_BOOT_START;
(*uboot)();
}
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