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/*
* (C) Copyright 2012
* Texas Instruments, <www.ti.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef _SPL_H_
#define _SPL_H_
/* Platform-specific defines */
#include <linux/compiler.h>
#include <asm/spl.h>
/* Value in r0 indicates we booted from U-Boot */
#define UBOOT_NOT_LOADED_FROM_SPL 0x13578642
/* Boot type */
#define MMCSD_MODE_UNDEFINED 0
#define MMCSD_MODE_RAW 1
#define MMCSD_MODE_FS 2
#define MMCSD_MODE_EMMCBOOT 3
struct spl_image_info {
const char *name;
u8 os;
u32 load_addr;
u32 entry_point;
u32 size;
u32 flags;
};
/*
* Information required to load data from a device
*
* @dev: Pointer to the device, e.g. struct mmc *
* @priv: Private data for the device
* @bl_len: Block length for reading in bytes
* @filename: Name of the fit image file.
* @read: Function to call to read from the device
*/
struct spl_load_info {
void *dev;
void *priv;
int bl_len;
const char *filename;
ulong (*read)(struct spl_load_info *load, ulong sector, ulong count,
void *buf);
};
/**
* spl_load_simple_fit() - Loads a fit image from a device.
* @info: Structure containing the information required to load data.
* @sector: Sector number where FIT image is located in the device
* @fdt: Pointer to the copied FIT header.
*
* Reads the FIT image @sector in the device. Loads u-boot image to
* specified load address and copies the dtb to end of u-boot image.
* Returns 0 on success.
*/
int spl_load_simple_fit(struct spl_load_info *info, ulong sector, void *fdt);
#define SPL_COPY_PAYLOAD_ONLY 1
extern struct spl_image_info spl_image;
/* SPL common functions */
void preloader_console_init(void);
u32 spl_boot_device(void);
u32 spl_boot_mode(const u32 boot_device);
void spl_set_header_raw_uboot(void);
int spl_parse_image_header(const struct image_header *header);
void spl_board_prepare_for_linux(void);
void spl_board_prepare_for_boot(void);
int spl_board_ubi_load_image(u32 boot_device);
void __noreturn jump_to_image_linux(void *arg);
int spl_start_uboot(void);
void spl_display_print(void);
/* NAND SPL functions */
int spl_nand_load_image(void);
/* OneNAND SPL functions */
int spl_onenand_load_image(void);
/* NOR SPL functions */
int spl_nor_load_image(void);
/* UBI SPL functions */
int spl_ubi_load_image(u32 boot_device);
/* MMC SPL functions */
int spl_mmc_load_image(u32 boot_device);
/* YMODEM SPL functions */
int spl_ymodem_load_image(void);
/* SPI SPL functions */
int spl_spi_load_image(void);
/* Ethernet SPL functions */
int spl_net_load_image(const char *device);
/* USB SPL functions */
int spl_usb_load_image(void);
/* SATA SPL functions */
int spl_sata_load_image(void);
/* SPL FAT image functions */
int spl_load_image_fat(struct blk_desc *block_dev, int partition,
const char *filename);
int spl_load_image_fat_os(struct blk_desc *block_dev, int partition);
void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image);
/* SPL EXT image functions */
int spl_load_image_ext(struct blk_desc *block_dev, int partition,
const char *filename);
int spl_load_image_ext_os(struct blk_desc *block_dev, int partition);
/**
* spl_init() - Set up device tree and driver model in SPL if enabled
*
* Call this function in board_init_f() if you want to use device tree and
* driver model early, before board_init_r() is called. This function will
* be called from board_init_r() if not called earlier.
*
* If this is not called, then driver model will be inactive in SPL's
* board_init_f(), and no device tree will be available.
*/
int spl_init(void);
#ifdef CONFIG_SPL_BOARD_INIT
void spl_board_init(void);
#endif
/**
* spl_was_boot_source() - check if U-Boot booted from SPL
*
* This will normally be true, but if U-Boot jumps to second U-Boot, it will
* be false. This should be implemented by board-specific code.
*
* @return true if U-Boot booted from SPL, else false
*/
bool spl_was_boot_source(void);
#endif
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