mirror of
https://github.com/AsahiLinux/u-boot
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3a3b914789
Call this function before passing control from SPL. For fpga case it is necessary to enable for example level shifters when bitstream is programmed. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Simon Glass <sjg@chromium.org>
131 lines
3.3 KiB
C
131 lines
3.3 KiB
C
/*
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* (C) Copyright 2012
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* Texas Instruments, <www.ti.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef _SPL_H_
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#define _SPL_H_
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/* Platform-specific defines */
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#include <linux/compiler.h>
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#include <asm/spl.h>
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/* Value in r0 indicates we booted from U-Boot */
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#define UBOOT_NOT_LOADED_FROM_SPL 0x13578642
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/* Boot type */
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#define MMCSD_MODE_UNDEFINED 0
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#define MMCSD_MODE_RAW 1
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#define MMCSD_MODE_FS 2
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#define MMCSD_MODE_EMMCBOOT 3
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struct spl_image_info {
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const char *name;
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u8 os;
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u32 load_addr;
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u32 entry_point;
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u32 size;
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u32 flags;
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};
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/*
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* Information required to load data from a device
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*
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* @dev: Pointer to the device, e.g. struct mmc *
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* @priv: Private data for the device
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* @bl_len: Block length for reading in bytes
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* @read: Function to call to read from the device
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*/
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struct spl_load_info {
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void *dev;
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void *priv;
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int bl_len;
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ulong (*read)(struct spl_load_info *load, ulong sector, ulong count,
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void *buf);
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};
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int spl_load_simple_fit(struct spl_load_info *info, ulong sector, void *fdt);
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#define SPL_COPY_PAYLOAD_ONLY 1
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extern struct spl_image_info spl_image;
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/* SPL common functions */
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void preloader_console_init(void);
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u32 spl_boot_device(void);
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u32 spl_boot_mode(void);
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void spl_set_header_raw_uboot(void);
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int spl_parse_image_header(const struct image_header *header);
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void spl_board_prepare_for_linux(void);
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void spl_board_prepare_for_boot(void);
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void __noreturn jump_to_image_linux(void *arg);
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int spl_start_uboot(void);
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void spl_display_print(void);
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/* NAND SPL functions */
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int spl_nand_load_image(void);
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/* OneNAND SPL functions */
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int spl_onenand_load_image(void);
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/* NOR SPL functions */
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int spl_nor_load_image(void);
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/* MMC SPL functions */
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int spl_mmc_load_image(u32 boot_device);
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/* YMODEM SPL functions */
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int spl_ymodem_load_image(void);
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/* SPI SPL functions */
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int spl_spi_load_image(void);
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/* Ethernet SPL functions */
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int spl_net_load_image(const char *device);
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/* USB SPL functions */
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int spl_usb_load_image(void);
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/* SATA SPL functions */
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int spl_sata_load_image(void);
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/* SPL FAT image functions */
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int spl_load_image_fat(struct blk_desc *block_dev, int partition,
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const char *filename);
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int spl_load_image_fat_os(struct blk_desc *block_dev, int partition);
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void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image);
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/* SPL EXT image functions */
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int spl_load_image_ext(struct blk_desc *block_dev, int partition,
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const char *filename);
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int spl_load_image_ext_os(struct blk_desc *block_dev, int partition);
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/**
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* spl_init() - Set up device tree and driver model in SPL if enabled
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*
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* Call this function in board_init_f() if you want to use device tree and
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* driver model early, before board_init_r() is called. This function will
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* be called from board_init_r() if not called earlier.
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*
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* If this is not called, then driver model will be inactive in SPL's
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* board_init_f(), and no device tree will be available.
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*/
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int spl_init(void);
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#ifdef CONFIG_SPL_BOARD_INIT
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void spl_board_init(void);
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#endif
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/**
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* spl_was_boot_source() - check if U-Boot booted from SPL
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*
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* This will normally be true, but if U-Boot jumps to second U-Boot, it will
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* be false. This should be implemented by board-specific code.
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*
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* @return true if U-Boot booted from SPL, else false
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*/
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bool spl_was_boot_source(void);
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#endif
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