spl_nor.c
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/*
* Copyright (C) 2012 Stefan Roese <sr@denx.de>
* Copyright 2018 NXP
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <spl.h>
static ulong spl_nor_fit_read(struct spl_load_info *load, ulong sector,
ulong count, void *buf)
{
memcpy(buf, (void *)sector, count);
return count;
}
unsigned long __weak spl_nor_get_uboot_base(void)
{
return CONFIG_SYS_UBOOT_BASE;
}
#ifdef CONFIG_PARSE_CONTAINER
int __weak nor_load_image_parse_container(struct spl_image_info *spl_image,
unsigned long offset)
{
return -EINVAL;
}
#else
static int nor_load_legacy(struct spl_image_info *spl_image)
{
int ret;
/*
* Load real U-Boot from its location in NOR flash to its
* defined location in SDRAM
*/
ret = spl_parse_image_header(spl_image,
(const struct image_header *)spl_nor_get_uboot_base());
if (ret)
return ret;
memcpy((void *)(unsigned long)spl_image->load_addr,
(void *)(spl_nor_get_uboot_base() + sizeof(struct image_header)),
spl_image->size);
return 0;
}
#endif
static int spl_nor_load_image(struct spl_image_info *spl_image,
struct spl_boot_device *bootdev)
{
const struct image_header *header;
int ret;
/*
* Loading of the payload to SDRAM is done with skipping of
* the mkimage header in this SPL NOR driver
*/
spl_image->flags |= SPL_COPY_PAYLOAD_ONLY;
#ifdef CONFIG_SPL_OS_BOOT
if (!spl_start_uboot()) {
/*
* Load Linux from its location in NOR flash to its defined
* location in SDRAM
*/
header = (const struct image_header *)CONFIG_SYS_OS_BASE;
if (image_get_os(header) == IH_OS_LINUX) {
/* happy - was a Linux */
ret = spl_parse_image_header(spl_image, header);
if (ret)
return ret;
memcpy((void *)spl_image->load_addr,
(void *)(CONFIG_SYS_OS_BASE +
sizeof(struct image_header)),
spl_image->size);
spl_image->arg = (void *)CONFIG_SYS_FDT_BASE;
return 0;
} else {
puts("The Expected Linux image was not found.\n"
"Please check your NOR configuration.\n"
"Trying to start u-boot now...\n");
}
}
#endif
header = (struct image_header *)(CONFIG_SYS_TEXT_BASE -
sizeof(struct image_header));
memcpy((void *)header, (void *)spl_nor_get_uboot_base(), 0x40);
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_nor_fit_read;
ret = spl_load_simple_fit(spl_image, &load,
spl_nor_get_uboot_base(),
(void *)header);
} else {
#ifdef CONFIG_PARSE_CONTAINER
ret = nor_load_image_parse_container(spl_image,
spl_nor_get_uboot_base());
#else
ret = nor_load_legacy(spl_image);
#endif
}
return ret;
}
SPL_LOAD_IMAGE_METHOD("NOR", 0, BOOT_DEVICE_NOR, spl_nor_load_image);