1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Copyright (C) 2011
4 * Heiko Schocher, DENX Software Engineering, hs@denx.de.
5 */
6
7#include <common.h>
8#include <nand.h>
9
10/*
11 * The main entry for NAND booting. It's necessary that SDRAM is already
12 * configured and available since this code loads the main U-Boot image
13 * from NAND into SDRAM and starts it from there.
14 */
15void nand_boot(void)
16{
17	__attribute__((noreturn)) void (*uboot)(void);
18
19	/*
20	 * Load U-Boot image from NAND into RAM
21	 */
22	nand_spl_load_image(CONFIG_SYS_NAND_U_BOOT_OFFS,
23			CFG_SYS_NAND_U_BOOT_SIZE,
24			(void *)CFG_SYS_NAND_U_BOOT_DST);
25
26#ifdef CONFIG_NAND_ENV_DST
27	nand_spl_load_image(CONFIG_ENV_OFFSET, CONFIG_ENV_SIZE,
28			(void *)CONFIG_NAND_ENV_DST);
29
30#ifdef CONFIG_ENV_OFFSET_REDUND
31	nand_spl_load_image(CONFIG_ENV_OFFSET_REDUND, CONFIG_ENV_SIZE,
32			(void *)CONFIG_NAND_ENV_DST + CONFIG_ENV_SIZE);
33#endif
34#endif
35
36	/*
37	 * Jump to U-Boot image
38	 */
39	uboot = (void *)CFG_SYS_NAND_U_BOOT_START;
40	(*uboot)();
41}
42