mirror of
https://source.denx.de/u-boot/u-boot.git
synced 2025-12-19 16:31:27 +01:00
b1a3ed0688
Falcon mode loads a kernel file and an args file which is the device-tree. However in the case of kernel file being a FIT that contains the device-tree within it, loading the args file is not required. Therefore, this patch introduces a new SPL_OS_BOOT_ARGS config options that allows us to enable or disable loading of the args file in falcon mode. Signed-off-by: Anshul Dalal <anshuld@ti.com>
133 lines
3.1 KiB
C
133 lines
3.1 KiB
C
// 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, hs@denx.de.
|
|
*/
|
|
|
|
#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))
|
|
err = spi_nor_remove(flash);
|
|
return err;
|
|
}
|
|
/* Use priorty 1 so that boards can override this */
|
|
SPL_LOAD_IMAGE_METHOD("SPI", 1, BOOT_DEVICE_SPI, spl_spi_load_image);
|