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/*
* Copyright (C) 2011
* Corscience GmbH & Co. KG - Simon Schwarz <schwarz@corscience.de>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <config.h>
#include <spl.h>
#include <asm/io.h>
#include <nand.h>
#include <libfdt_env.h>
#include <fdt.h>
#if defined(CONFIG_SPL_NAND_RAW_ONLY)
int spl_nand_load_image(void)
{
nand_init();
nand_spl_load_image(CONFIG_SYS_NAND_U_BOOT_OFFS,
CONFIG_SYS_NAND_U_BOOT_SIZE,
(void *)CONFIG_SYS_NAND_U_BOOT_DST);
spl_set_header_raw_uboot(&spl_image);
nand_deselect();
return 0;
}
#else
static ulong spl_nand_fit_read(struct spl_load_info *load, ulong offs,
ulong size, void *dst)
{
int ret;
ret = nand_spl_load_image(offs, size, dst);
if (!ret)
return size;
else
return 0;
}
static int spl_nand_load_element(int offset, struct image_header *header)
{
int err;
err = nand_spl_load_image(offset, sizeof(*header), (void *)header);
if (err)
return err;
if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
image_get_magic(header) == FDT_MAGIC) {
struct spl_load_info load;
debug("Found FIT\n");
load.dev = NULL;
load.priv = NULL;
load.filename = NULL;
load.bl_len = 1;
load.read = spl_nand_fit_read;
return spl_load_simple_fit(&load, offset, header);
} else {
err = spl_parse_image_header(&spl_image, header);
if (err)
return err;
return nand_spl_load_image(offset, spl_image.size,
(void *)(ulong)spl_image.load_addr);
}
}
int spl_nand_load_image(void)
{
int err;
struct image_header *header;
int *src __attribute__((unused));
int *dst __attribute__((unused));
#ifdef CONFIG_SPL_NAND_SOFTECC
debug("spl: nand - using sw ecc\n");
#else
debug("spl: nand - using hw ecc\n");
#endif
nand_init();
/*use CONFIG_SYS_TEXT_BASE as temporary storage area */
header = (struct image_header *)(CONFIG_SYS_TEXT_BASE);
#ifdef CONFIG_SPL_OS_BOOT
if (!spl_start_uboot()) {
/*
* load parameter image
* load to temp position since nand_spl_load_image reads
* a whole block which is typically larger than
* CONFIG_CMD_SPL_WRITE_SIZE therefore may overwrite
* following sections like BSS
*/
nand_spl_load_image(CONFIG_CMD_SPL_NAND_OFS,
CONFIG_CMD_SPL_WRITE_SIZE,
(void *)CONFIG_SYS_TEXT_BASE);
/* copy to destintion */
for (dst = (int *)CONFIG_SYS_SPL_ARGS_ADDR,
src = (int *)CONFIG_SYS_TEXT_BASE;
src < (int *)(CONFIG_SYS_TEXT_BASE +
CONFIG_CMD_SPL_WRITE_SIZE);
src++, dst++) {
writel(readl(src), dst);
}
/* load linux */
nand_spl_load_image(CONFIG_SYS_NAND_SPL_KERNEL_OFFS,
sizeof(*header), (void *)header);
err = spl_parse_image_header(&spl_image, header);
if (err)
return err;
if (header->ih_os == IH_OS_LINUX) {
/* happy - was a linux */
err = nand_spl_load_image(
CONFIG_SYS_NAND_SPL_KERNEL_OFFS,
spl_image.size,
(void *)spl_image.load_addr);
nand_deselect();
return err;
} else {
puts("The Expected Linux image was not "
"found. Please check your NAND "
"configuration.\n");
puts("Trying to start u-boot now...\n");
}
}
#endif
#ifdef CONFIG_NAND_ENV_DST
spl_nand_load_element(CONFIG_ENV_OFFSET, header);
#ifdef CONFIG_ENV_OFFSET_REDUND
spl_nand_load_element(CONFIG_ENV_OFFSET_REDUND, header);
#endif
#endif
/* Load u-boot */
err = spl_nand_load_element(CONFIG_SYS_NAND_U_BOOT_OFFS, header);
#ifdef CONFIG_SYS_NAND_U_BOOT_OFFS_REDUND
#if CONFIG_SYS_NAND_U_BOOT_OFFS != CONFIG_SYS_NAND_U_BOOT_OFFS_REDUND
if (err)
err = spl_nand_load_element(CONFIG_SYS_NAND_U_BOOT_OFFS_REDUND,
header);
#endif
#endif
nand_deselect();
return err;
}
#endif
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