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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2011 OMICRON electronics GmbH
*
* based on drivers/mtd/nand/raw/nand_spl_load.c
*
* Copyright (C) 2011
* Heiko Schocher, DENX Software Engineering, [email protected].
*/
#include <config.h>
#include <image.h>
#include <imx_container.h>
#include <log.h>
#include <spi.h>
#include <spi_flash.h>
#include <errno.h>
#include <spl.h>
#include <spl_load.h>
#include <asm/global_data.h>
#include <asm/io.h>
#include <dm/ofnode.h>
static ulong spl_spi_fit_read(struct spl_load_info *load, ulong sector,
ulong count, void *buf)
{
struct spi_flash *flash = load->priv;
ulong ret;
ret = spi_flash_read(flash, sector, count, buf);
if (!ret)
return count;
else
return 0;
}
unsigned int __weak spl_spi_get_uboot_offs(struct spi_flash *flash)
{
return CONFIG_SYS_SPI_U_BOOT_OFFS;
}
u32 __weak spl_spi_boot_bus(void)
{
return CONFIG_SF_DEFAULT_BUS;
}
u32 __weak spl_spi_boot_cs(void)
{
return CONFIG_SF_DEFAULT_CS;
}
#if IS_ENABLED(CONFIG_SPL_OS_BOOT)
static int spl_spi_load_image_os(struct spl_image_info *spl_image,
struct spl_boot_device *bootdev,
struct spi_flash *flash,
struct spl_load_info *load)
{
int err = spl_load(spl_image, bootdev, load, 0,
CONFIG_SYS_SPI_KERNEL_OFFS);
if (err)
return err;
#if IS_ENABLED(CONFIG_SPL_OS_BOOT_ARGS)
/* Read device tree. */
return spi_flash_read(flash, CONFIG_SYS_SPI_ARGS_OFFS,
CONFIG_SYS_SPI_ARGS_SIZE,
(void *)CONFIG_SPL_PAYLOAD_ARGS_ADDR);
#else
return 0;
#endif
}
#endif
/*
* The main entry for SPI booting. It's necessary that SDRAM is already
* configured and available since this code loads the main U-Boot image
* from SPI into SDRAM and starts it from there.
*/
static int spl_spi_load_image(struct spl_image_info *spl_image,
struct spl_boot_device *bootdev)
{
int err = 0;
unsigned int payload_offs;
struct spi_flash *flash;
unsigned int sf_bus = spl_spi_boot_bus();
unsigned int sf_cs = spl_spi_boot_cs();
struct spl_load_info load;
/*
* Load U-Boot image from SPI flash into RAM
* In DM mode: defaults speed and mode will be
* taken from DT when available
*/
flash = spi_flash_probe(sf_bus, sf_cs,
CONFIG_SF_DEFAULT_SPEED,
CONFIG_SF_DEFAULT_MODE);
if (!flash) {
puts("SPI probe failed.\n");
return -ENODEV;
}
spl_load_init(&load, spl_spi_fit_read, flash, 1);
#if CONFIG_IS_ENABLED(OS_BOOT)
if (!spl_start_uboot()) {
err = spl_spi_load_image_os(spl_image, bootdev, flash, &load);
if (!err)
return 0;
printf("%s: Failed in falcon boot: %d", __func__, err);
if (IS_ENABLED(CONFIG_SPL_OS_BOOT_SECURE))
return err;
printf("Fallback to U-Boot\n");
}
#endif
payload_offs = spl_spi_get_uboot_offs(flash);
if (CONFIG_IS_ENABLED(OF_REAL)) {
payload_offs = ofnode_conf_read_int("u-boot,spl-payload-offset",
payload_offs);
}
err = spl_load(spl_image, bootdev, &load, 0, payload_offs);
if (IS_ENABLED(CONFIG_SPI_FLASH_SOFT_RESET)) {
int ret = spi_nor_remove(flash);
if (ret) {
printf("%s: Failed to remove SPI NOR flash: %d\n",
__func__, ret);
if (!err)
err = ret;
}
}
return err;
}
/* Use priorty 1 so that boards can override this */
SPL_LOAD_IMAGE_METHOD("SPI", 1, BOOT_DEVICE_SPI, spl_spi_load_image);
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