mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-16 01:38:22 +00:00
e1eb6ada4e
The current U-Boot SPL image loader infrastructure is very powerful, able to initialize and load from a variety of boot media however it is strongly geared towards loading specific types of images in a very specific way. To address the need being able to use this infrastructure to load arbitrary image files go ahead and refactor it as follows: - Refactor existing spl_mmc_load_image function into superset function, accepting additional arguments such as filenames and media load offset (same concept can also be applied toother spl_XXX_load_image functions) - Extend the loader function to "remember" their peripheral initialization status so that the init is only done once during the boot process, - Extend the FIT image loading function to allow skipping the parsing/ processing of the FIT contents (so that this can be done separately in a more customized fashion) - Populate the SPL_LOAD_IMAGE_METHOD() list with a trampoline function, invoking the newly refactored superset functions in a way to maintain compatibility with the existing behavior This refactoring initially covers MMC/SD card loading (RAW and FS-based). Signed-off-by: Andreas Dannenberg <dannenberg@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com>
413 lines
12 KiB
C
413 lines
12 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* (C) Copyright 2012
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* Texas Instruments, <www.ti.com>
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*/
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#ifndef _SPL_H_
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#define _SPL_H_
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#include <binman_sym.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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#include <handoff.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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/*
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* u_boot_first_phase() - check if this is the first U-Boot phase
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*
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* U-Boot has up to three phases: TPL, SPL and U-Boot proper. Depending on the
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* build flags we can determine whether the current build is for the first
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* phase of U-Boot or not. If there is no SPL, then this is U-Boot proper. If
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* there is SPL but no TPL, the the first phase is SPL. If there is TPL, then
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* it is the first phase.
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*
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* @returns true if this is the first phase of U-Boot
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*
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*/
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static inline bool u_boot_first_phase(void)
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{
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if (IS_ENABLED(CONFIG_TPL)) {
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if (IS_ENABLED(CONFIG_TPL_BUILD))
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return true;
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} else if (IS_ENABLED(CONFIG_SPL)) {
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if (IS_ENABLED(CONFIG_SPL_BUILD))
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return true;
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} else {
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return true;
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}
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return false;
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}
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/* A string name for SPL or TPL */
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#ifdef CONFIG_SPL_BUILD
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# ifdef CONFIG_TPL_BUILD
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# define SPL_TPL_NAME "TPL"
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# else
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# define SPL_TPL_NAME "SPL"
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# endif
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# define SPL_TPL_PROMPT SPL_TPL_NAME ": "
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#else
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# define SPL_TPL_NAME ""
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# define SPL_TPL_PROMPT ""
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#endif
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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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uintptr_t load_addr;
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uintptr_t entry_point;
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#if CONFIG_IS_ENABLED(LOAD_FIT) || CONFIG_IS_ENABLED(LOAD_FIT_FULL)
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void *fdt_addr;
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#endif
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u32 boot_device;
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u32 size;
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u32 flags;
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void *arg;
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#ifdef CONFIG_SPL_LEGACY_IMAGE_CRC_CHECK
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ulong dcrc_data;
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ulong dcrc_length;
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ulong dcrc;
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#endif
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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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* @filename: Name of the fit image file.
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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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const char *filename;
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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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/*
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* We need to know the position of U-Boot in memory so we can jump to it. We
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* allow any U-Boot binary to be used (u-boot.bin, u-boot-nodtb.bin,
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* u-boot.img), hence the '_any'. These is no checking here that the correct
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* image is found. For * example if u-boot.img is used we don't check that
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* spl_parse_image_header() can parse a valid header.
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*/
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binman_sym_extern(ulong, u_boot_any, image_pos);
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/**
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* spl_load_simple_fit_skip_processing() - Hook to allow skipping the FIT
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* image processing during spl_load_simple_fit().
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*
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* Return true to skip FIT processing, false to preserve the full code flow
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* of spl_load_simple_fit().
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*/
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bool spl_load_simple_fit_skip_processing(void);
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/**
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* spl_load_simple_fit() - Loads a fit image from a device.
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* @spl_image: Image description to set up
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* @info: Structure containing the information required to load data.
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* @sector: Sector number where FIT image is located in the device
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* @fdt: Pointer to the copied FIT header.
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*
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* Reads the FIT image @sector in the device. Loads u-boot image to
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* specified load address and copies the dtb to end of u-boot image.
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* Returns 0 on success.
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*/
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int spl_load_simple_fit(struct spl_image_info *spl_image,
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struct spl_load_info *info, ulong sector, void *fdt);
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#define SPL_COPY_PAYLOAD_ONLY 1
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#define SPL_FIT_FOUND 2
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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(const u32 boot_device);
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int spl_boot_partition(const u32 boot_device);
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void spl_set_bd(void);
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/**
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* spl_set_header_raw_uboot() - Set up a standard SPL image structure
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*
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* This sets up the given spl_image which the standard values obtained from
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* config options: CONFIG_SYS_MONITOR_LEN, CONFIG_SYS_UBOOT_START,
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* CONFIG_SYS_TEXT_BASE.
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*
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* @spl_image: Image description to set up
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*/
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void spl_set_header_raw_uboot(struct spl_image_info *spl_image);
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/**
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* spl_parse_image_header() - parse the image header and set up info
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*
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* This parses the legacy image header information at @header and sets up
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* @spl_image according to what is found. If no image header is found, then
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* a raw image or bootz is assumed. If CONFIG_SPL_PANIC_ON_RAW_IMAGE is
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* enabled, then this causes a panic. If CONFIG_SPL_RAW_IMAGE_SUPPORT is not
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* enabled then U-Boot gives up. Otherwise U-Boot sets up the image using
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* spl_set_header_raw_uboot(), or possibly the bootz header.
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*
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* @spl_image: Image description to set up
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* @header image header to parse
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* @return 0 if a header was correctly parsed, -ve on error
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*/
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int spl_parse_image_header(struct spl_image_info *spl_image,
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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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int spl_board_ubi_load_image(u32 boot_device);
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/**
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* jump_to_image_linux() - Jump to a Linux kernel from SPL
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*
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* This jumps into a Linux kernel using the information in @spl_image.
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*
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* @spl_image: Image description to set up
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*/
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void __noreturn jump_to_image_linux(struct spl_image_info *spl_image);
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/**
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* spl_start_uboot() - Check if SPL should start the kernel or U-Boot
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*
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* This is called by the various SPL loaders to determine whether the board
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* wants to load the kernel or U-Boot. This function should be provided by
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* the board.
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*
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* @return 0 if SPL should start the kernel, 1 if U-Boot must be started
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*/
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int spl_start_uboot(void);
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/**
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* spl_display_print() - Display a board-specific message in SPL
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*
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* If CONFIG_SPL_DISPLAY_PRINT is enabled, U-Boot will call this function
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* immediately after displaying the SPL console banner ("U-Boot SPL ...").
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* This function should be provided by the board.
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*/
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void spl_display_print(void);
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/**
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* struct spl_boot_device - Describes a boot device used by SPL
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*
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* @boot_device: A number indicating the BOOT_DEVICE type. There are various
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* BOOT_DEVICE... #defines and enums in U-Boot and they are not consistently
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* numbered.
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* @boot_device_name: Named boot device, or NULL if none.
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*
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* Note: Additional fields can be added here, bearing in mind that SPL is
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* size-sensitive and common fields will be present on all boards. This
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* struct can also be used to return additional information about the load
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* process if that becomes useful.
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*/
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struct spl_boot_device {
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uint boot_device;
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const char *boot_device_name;
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};
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/**
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* Holds information about a way of loading an SPL image
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*
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* @name: User-friendly name for this method (e.g. "MMC")
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* @boot_device: Boot device that this loader supports
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* @load_image: Function to call to load image
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*/
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struct spl_image_loader {
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#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
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const char *name;
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#endif
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uint boot_device;
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/**
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* load_image() - Load an SPL image
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*
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* @spl_image: place to put image information
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* @bootdev: describes the boot device to load from
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*/
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int (*load_image)(struct spl_image_info *spl_image,
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struct spl_boot_device *bootdev);
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};
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/* Declare an SPL image loader */
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#define SPL_LOAD_IMAGE(__name) \
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ll_entry_declare(struct spl_image_loader, __name, spl_image_loader)
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/*
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* _priority is the priority of this method, 0 meaning it will be the top
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* choice for this device, 9 meaning it is the bottom choice.
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* _boot_device is the BOOT_DEVICE_... value
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* _method is the load_image function to call
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*/
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#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
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#define SPL_LOAD_IMAGE_METHOD(_name, _priority, _boot_device, _method) \
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SPL_LOAD_IMAGE(_method ## _priority ## _boot_device) = { \
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.name = _name, \
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.boot_device = _boot_device, \
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.load_image = _method, \
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}
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#else
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#define SPL_LOAD_IMAGE_METHOD(_name, _priority, _boot_device, _method) \
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SPL_LOAD_IMAGE(_method ## _priority ## _boot_device) = { \
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.boot_device = _boot_device, \
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.load_image = _method, \
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}
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#endif
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/* SPL FAT image functions */
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int spl_load_image_fat(struct spl_image_info *spl_image,
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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 spl_image_info *spl_image,
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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 spl_image_info *spl_image,
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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 spl_image_info *spl_image,
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struct blk_desc *block_dev, int partition);
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/**
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* spl_early_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.
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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_early_init(void);
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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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* You can optionally call spl_early_init(), then optionally call spl_init().
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* This function will be called from board_init_r() if not called earlier.
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*
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* Both spl_early_init() and spl_init() perform a similar function except that
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* the latter will not set up the malloc() area if
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* CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN is enabled, since it is assumed to
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* already be done by a calll to spl_relocate_stack_gd() before board_init_r()
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* is reached.
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*
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* This function will 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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/**
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* spl_dfu_cmd- run dfu command with chosen mmc device interface
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* @param usb_index - usb controller number
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* @param mmc_dev - mmc device nubmer
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*
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* @return 0 on success, otherwise error code
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*/
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int spl_dfu_cmd(int usbctrl, char *dfu_alt_info, char *interface, char *devstr);
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int spl_mmc_load_image(struct spl_image_info *spl_image,
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struct spl_boot_device *bootdev);
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/**
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* spl_mmc_load() - Load an image file from MMC/SD media
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*
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* @param spl_image Image data filled in by loading process
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* @param bootdev Describes which device to load from
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* @param filename Name of file to load (in FS mode)
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* @param raw_part Partition to load from (in RAW mode)
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* @param raw_sect Sector to load from (in RAW mode)
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*
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* @return 0 on success, otherwise error code
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*/
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int spl_mmc_load(struct spl_image_info *spl_image,
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struct spl_boot_device *bootdev,
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const char *filename,
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int raw_part,
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unsigned long raw_sect);
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/**
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* spl_invoke_atf - boot using an ARM trusted firmware image
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*/
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void spl_invoke_atf(struct spl_image_info *spl_image);
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/**
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* spl_optee_entry - entry function for optee
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*
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* args defind in op-tee project
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* https://github.com/OP-TEE/optee_os/
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* core/arch/arm/kernel/generic_entry_a32.S
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* @arg0: pagestore
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* @arg1: (ARMv7 standard bootarg #1)
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* @arg2: device tree address, (ARMv7 standard bootarg #2)
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* @arg3: non-secure entry address (ARMv7 bootarg #0)
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*/
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void spl_optee_entry(void *arg0, void *arg1, void *arg2, void *arg3);
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/**
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* board_return_to_bootrom - allow for boards to continue with the boot ROM
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*
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* If a board (e.g. the Rockchip RK3368 boards) provide some
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* supporting functionality for SPL in their boot ROM and the SPL
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* stage wants to return to the ROM code to continue booting, boards
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* can implement 'board_return_to_bootrom'.
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*/
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void board_return_to_bootrom(void);
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/**
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* board_spl_fit_post_load - allow process images after loading finished
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*
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*/
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void board_spl_fit_post_load(ulong load_addr, size_t length);
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/**
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* board_spl_fit_size_align - specific size align before processing payload
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*
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*/
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ulong board_spl_fit_size_align(ulong size);
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/**
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* spl_perform_fixups() - arch/board-specific callback before processing
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* the boot-payload
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*/
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void spl_perform_fixups(struct spl_image_info *spl_image);
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/*
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* spl_get_load_buffer() - get buffer for loading partial image data
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*
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* Returns memory area which can be populated by partial image data,
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* ie. uImage or fitImage header.
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*/
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struct image_header *spl_get_load_buffer(ssize_t offset, size_t size);
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#endif
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