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include/spl.h
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/* * (C) Copyright 2012 * Texas Instruments, <www.ti.com> * |
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* SPDX-License-Identifier: GPL-2.0+ |
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*/ #ifndef _SPL_H_ #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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/* Value in r0 indicates we booted from U-Boot */ #define UBOOT_NOT_LOADED_FROM_SPL 0x13578642 |
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/* Boot type */ #define MMCSD_MODE_UNDEFINED 0 #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 { const char *name; u8 os; |
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uintptr_t load_addr; uintptr_t entry_point; |
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#if CONFIG_IS_ENABLED(LOAD_FIT) void *fdt_addr; #endif |
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u32 size; |
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u32 flags; |
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void *arg; |
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#ifdef CONFIG_DUAL_BOOTLOADER uint64_t rbindex; #endif |
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}; |
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/* * 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 |
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* @filename: Name of the fit image file. |
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* @read: Function to call to read from the device */ struct spl_load_info { void *dev; void *priv; 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, void *buf); }; |
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/* * We need to know the position of U-Boot in memory so we can jump to it. We * allow any U-Boot binary to be used (u-boot.bin, u-boot-nodtb.bin, * u-boot.img), hence the '_any'. These is no checking here that the correct * image is found. For * example if u-boot.img is used we don't check that * spl_parse_image_header() can parse a valid header. */ binman_sym_extern(ulong, u_boot_any, pos); |
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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. * @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. */ |
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int spl_load_simple_fit(struct spl_image_info *spl_image, 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 */ void preloader_console_init(void); u32 spl_boot_device(void); |
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u32 spl_boot_mode(const u32 boot_device); |
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void spl_set_bd(void); |
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/** * spl_set_header_raw_uboot() - Set up a standard SPL image structure * * This sets up the given spl_image which the standard values obtained from * config options: CONFIG_SYS_MONITOR_LEN, CONFIG_SYS_UBOOT_START, * CONFIG_SYS_TEXT_BASE. * |
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* @spl_image: Image description to set up |
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*/ void spl_set_header_raw_uboot(struct spl_image_info *spl_image); |
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/** * spl_set_header_raw_atf() - Set up a standard SPL image structure for ATF * * This sets up the given spl_image which the standard values obtained from * config options: CONFIG_SYS_MONITOR_LEN, CONFIG_SYS_UBOOT_START, * CONFIG_SYS_TEXT_BASE. * * @spl_image: Image description to set up */ void spl_set_header_raw_atf(struct spl_image_info *spl_image); |
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/** * spl_parse_image_header() - parse the image header and set up info * * This parses the legacy image header information at @header and sets up * @spl_image according to what is found. If no image header is found, then * 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 * spl_set_header_raw_uboot(), or possibly the bootz header. * * @spl_image: Image description to set up * @header image header to parse * @return 0 if a header was correctly parsed, -ve on error */ int spl_parse_image_header(struct spl_image_info *spl_image, 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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/** * jump_to_image_linux() - Jump to a Linux kernel from SPL * * This jumps into a Linux kernel using the information in @spl_image. * * @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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/** * spl_start_uboot() - Check if SPL should start the kernel or U-Boot * * This is called by the various SPL loaders to determine whether the board * wants to load the kernel or U-Boot. This function should be provided by * the board. * * @return 0 if SPL should start the kernel, 1 if U-Boot must be started */ |
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int spl_start_uboot(void); |
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/** * spl_display_print() - Display a board-specific message in SPL * * If CONFIG_SPL_DISPLAY_PRINT is enabled, U-Boot will call this function * immediately after displaying the SPL console banner ("U-Boot SPL ..."). * This function should be provided by the board. */ |
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void spl_display_print(void); |
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/** * struct spl_boot_device - Describes a boot device used by SPL * * @boot_device: A number indicating the BOOT_DEVICE type. There are various * BOOT_DEVICE... #defines and enums in U-Boot and they are not consistently * numbered. * @boot_device_name: Named boot device, or NULL if none. * * Note: Additional fields can be added here, bearing in mind that SPL is * size-sensitive and common fields will be present on all boards. This * struct can also be used to return additional information about the load * process if that becomes useful. */ struct spl_boot_device { uint boot_device; const char *boot_device_name; }; |
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/** * Holds information about a way of loading an SPL image * |
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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 * @load_image: Function to call to load image */ struct spl_image_loader { |
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#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT const char *name; #endif |
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uint boot_device; /** * load_image() - Load an SPL image * |
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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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int (*load_image)(struct spl_image_info *spl_image, struct spl_boot_device *bootdev); |
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}; /* Declare an SPL image loader */ #define SPL_LOAD_IMAGE(__name) \ ll_entry_declare(struct spl_image_loader, __name, spl_image_loader) /* |
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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 * _method is the load_image function to call |
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*/ |
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#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT #define SPL_LOAD_IMAGE_METHOD(_name, _priority, _boot_device, _method) \ SPL_LOAD_IMAGE(_method ## _priority ## _boot_device) = { \ .name = _name, \ .boot_device = _boot_device, \ .load_image = _method, \ } #else #define SPL_LOAD_IMAGE_METHOD(_name, _priority, _boot_device, _method) \ |
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SPL_LOAD_IMAGE(_method ## _priority ## _boot_device) = { \ .boot_device = _boot_device, \ .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, 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, 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, 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, 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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* * 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. * * 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_early_init(void); /** * spl_init() - Set up device tree and driver model in SPL if enabled * * You can optionally call spl_early_init(), then optionally call spl_init(). * This function will be called from board_init_r() if not called earlier. * * Both spl_early_init() and spl_init() perform a similar function except that * the latter will not set up the malloc() area if * CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN is enabled, since it is assumed to * already be done by a calll to spl_relocate_stack_gd() before board_init_r() * is reached. * * This function will be called from board_init_r() if not called earlier. |
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* * 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); |
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#ifdef CONFIG_SPL_BOARD_INIT void spl_board_init(void); #endif |
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/** * 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); |
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/** * spl_dfu_cmd- run dfu command with chosen mmc device interface * @param usb_index - usb controller number * @param mmc_dev - mmc device nubmer * * @return 0 on success, otherwise error code */ 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, struct spl_boot_device *bootdev); |
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/** * spl_invoke_atf - boot using an ARM trusted firmware image */ void spl_invoke_atf(struct spl_image_info *spl_image); |
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/** * board_return_to_bootrom - allow for boards to continue with the boot ROM * * If a board (e.g. the Rockchip RK3368 boards) provide some * supporting functionality for SPL in their boot ROM and the SPL * stage wants to return to the ROM code to continue booting, boards * can implement 'board_return_to_bootrom'. */ void board_return_to_bootrom(void); |
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#endif |