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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2011
* Corscience GmbH & Co. KG - Simon Schwarz <schwarz@corscience.de>
*/
#include <config.h>
#include <fdt_support.h>
#include <image.h>
#include <imx_container.h>
#include <log.h>
#include <spl.h>
#include <spl_load.h>
#include <asm/io.h>
#include <mapmem.h>
#include <nand.h>
#include <linux/libfdt_env.h>
#include <fdt.h>
uint32_t __weak spl_nand_get_uboot_raw_page(void)
{
return CONFIG_SYS_NAND_U_BOOT_OFFS;
}
#if defined(CONFIG_SPL_NAND_RAW_ONLY)
static int spl_nand_load_image(struct spl_image_info *spl_image,
struct spl_boot_device *bootdev)
{
nand_init();
printf("Loading U-Boot from 0x%08x (size 0x%08x) to 0x%08x\n",
CONFIG_SYS_NAND_U_BOOT_OFFS, CFG_SYS_NAND_U_BOOT_SIZE,
CFG_SYS_NAND_U_BOOT_DST);
nand_spl_load_image(spl_nand_get_uboot_raw_page(),
CFG_SYS_NAND_U_BOOT_SIZE,
map_sysmem(CFG_SYS_NAND_U_BOOT_DST,
CFG_SYS_NAND_U_BOOT_SIZE));
spl_set_header_raw_uboot(spl_image);
nand_deselect();
return 0;
}
#else
__weak u32 nand_spl_adjust_offset(u32 sector, u32 offs)
{
return offs;
}
static ulong spl_nand_read(struct spl_load_info *load, ulong offs, ulong size,
void *dst)
{
int err;
ulong sector;
debug("%s: offs %lx, size %lx, dst %p\n",
__func__, offs, size, dst);
sector = *(int *)load->priv;
offs = sector + nand_spl_adjust_offset(sector, offs - sector);
err = nand_spl_load_image(offs, size, dst);
spl_set_bl_len(load, nand_page_size());
if (err)
return 0;
return size;
}
static int spl_nand_load_element(struct spl_image_info *spl_image,
struct spl_boot_device *bootdev, int offset)
{
struct spl_load_info load;
load.priv = &offset;
spl_set_bl_len(&load, 1);
load.read = spl_nand_read;
return spl_load(spl_image, bootdev, &load, 0, offset);
}
static int spl_nand_load_image(struct spl_image_info *spl_image,
struct spl_boot_device *bootdev)
{
int err;
#ifdef CONFIG_SPL_NAND_SOFTECC
debug("spl: nand - using sw ecc\n");
#else
debug("spl: nand - using hw ecc\n");
#endif
nand_init();
#if CONFIG_IS_ENABLED(OS_BOOT)
if (!spl_start_uboot()) {
int *src, *dst;
struct legacy_img_hdr *header =
spl_get_load_buffer(0, sizeof(*header));
/*
* 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_TEXT_BASE);
/* copy to destintion */
for (dst = (int *)CONFIG_SPL_PAYLOAD_ARGS_ADDR,
src = (int *)CONFIG_TEXT_BASE;
src < (int *)(CONFIG_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, bootdev, 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(spl_image, bootdev, CONFIG_ENV_OFFSET);
#ifdef CONFIG_ENV_OFFSET_REDUND
spl_nand_load_element(spl_image, bootdev, CONFIG_ENV_OFFSET_REDUND);
#endif
#endif
/* Load u-boot */
err = spl_nand_load_element(spl_image, bootdev, spl_nand_get_uboot_raw_page());
#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(spl_image, bootdev,
CONFIG_SYS_NAND_U_BOOT_OFFS_REDUND);
#endif
#endif
nand_deselect();
return err;
}
#endif
/* Use priorty 1 so that Ubi can override this */
SPL_LOAD_IMAGE_METHOD("NAND", 1, BOOT_DEVICE_NAND, spl_nand_load_image);
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