u-boot/arch/arm/include/asm/spl.h
Philipp Tomsich 225d30b708 spl: add a 'return to bootrom' boot method
Some devices (e.g. the RK3368) have only limited SRAM, but provide
support for loading the next boot stage after our SPL performs basic
setup (e.g. DRAM).

For target systems like these, we add a boot device BOOTROM that will
invoke a board-specific hook to return to the bootrom (if supported).

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>

Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-08-13 17:12:19 +02:00

45 lines
792 B
C

/*
* (C) Copyright 2012
* Texas Instruments, <www.ti.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef _ASM_SPL_H_
#define _ASM_SPL_H_
#if defined(CONFIG_ARCH_OMAP2PLUS) \
|| defined(CONFIG_EXYNOS4) || defined(CONFIG_EXYNOS5) \
|| defined(CONFIG_EXYNOS4210)
/* Platform-specific defines */
#include <asm/arch/spl.h>
#else
enum {
BOOT_DEVICE_RAM,
BOOT_DEVICE_MMC1,
BOOT_DEVICE_MMC2,
BOOT_DEVICE_MMC2_2,
BOOT_DEVICE_NAND,
BOOT_DEVICE_ONENAND,
BOOT_DEVICE_NOR,
BOOT_DEVICE_UART,
BOOT_DEVICE_SPI,
BOOT_DEVICE_USB,
BOOT_DEVICE_SATA,
BOOT_DEVICE_I2C,
BOOT_DEVICE_BOARD,
BOOT_DEVICE_DFU,
BOOT_DEVICE_XIP,
BOOT_DEVICE_BOOTROM,
BOOT_DEVICE_NONE
};
#endif
/* Linker symbols. */
extern char __bss_start[], __bss_end[];
#ifndef CONFIG_DM
extern gd_t gdata;
#endif
#endif