u-boot/include/spl.h

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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* (C) Copyright 2012
* Texas Instruments, <www.ti.com>
*/
#ifndef _SPL_H_
#define _SPL_H_
#include <binman_sym.h>
/* Platform-specific defines */
#include <linux/compiler.h>
#include <asm/spl.h>
#include <handoff.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
/*
* u_boot_first_phase() - check if this is the first U-Boot phase
*
* U-Boot has up to three phases: TPL, SPL and U-Boot proper. Depending on the
* build flags we can determine whether the current build is for the first
* phase of U-Boot or not. If there is no SPL, then this is U-Boot proper. If
* there is SPL but no TPL, the the first phase is SPL. If there is TPL, then
* it is the first phase.
*
* @returns true if this is the first phase of U-Boot
*
*/
static inline bool u_boot_first_phase(void)
{
if (IS_ENABLED(CONFIG_TPL)) {
if (IS_ENABLED(CONFIG_TPL_BUILD))
return true;
} else if (IS_ENABLED(CONFIG_SPL)) {
if (IS_ENABLED(CONFIG_SPL_BUILD))
return true;
} else {
return true;
}
return false;
}
enum u_boot_phase {
PHASE_TPL, /* Running in TPL */
PHASE_SPL, /* Running in SPL */
PHASE_BOARD_F, /* Running in U-Boot before relocation */
PHASE_BOARD_R, /* Running in U-Boot after relocation */
};
/**
* spl_phase() - Find out the phase of U-Boot
*
* This can be used to avoid #ifdef logic and use if() instead.
*
* For example, to include code only in TPL, you might do:
*
* #ifdef CONFIG_TPL_BUILD
* ...
* #endif
*
* but with this you can use:
*
* if (spl_phase() == PHASE_TPL) {
* ...
* }
*
* To include code only in SPL, you might do:
*
* #if defined(CONFIG_SPL_BUILD) && !defined(CONFIG_TPL_BUILD)
* ...
* #endif
*
* but with this you can use:
*
* if (spl_phase() == PHASE_SPL) {
* ...
* }
*
* To include code only in U-Boot proper, you might do:
*
* #ifndef CONFIG_SPL_BUILD
* ...
* #endif
*
* but with this you can use:
*
* if (spl_phase() == PHASE_BOARD_F) {
* ...
* }
*
* @return U-Boot phase
*/
static inline enum u_boot_phase spl_phase(void)
{
#ifdef CONFIG_TPL_BUILD
return PHASE_TPL;
#elif CONFIG_SPL_BUILD
return PHASE_SPL;
#else
DECLARE_GLOBAL_DATA_PTR;
if (!(gd->flags & GD_FLG_RELOC))
return PHASE_BOARD_F;
else
return PHASE_BOARD_R;
#endif
}
/* A string name for SPL or TPL */
#ifdef CONFIG_SPL_BUILD
# ifdef CONFIG_TPL_BUILD
# define SPL_TPL_NAME "TPL"
# else
# define SPL_TPL_NAME "SPL"
# endif
# define SPL_TPL_PROMPT SPL_TPL_NAME ": "
#else
# define SPL_TPL_NAME ""
# define SPL_TPL_PROMPT ""
#endif
struct spl_image_info {
const char *name;
u8 os;
uintptr_t load_addr;
uintptr_t entry_point;
#if CONFIG_IS_ENABLED(LOAD_FIT) || CONFIG_IS_ENABLED(LOAD_FIT_FULL)
void *fdt_addr;
#endif
u32 boot_device;
u32 size;
u32 flags;
void *arg;
#ifdef CONFIG_SPL_LEGACY_IMAGE_CRC_CHECK
ulong dcrc_data;
ulong dcrc_length;
ulong dcrc;
#endif
};
/*
* 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);
};
/*
* 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.
*
* Similarly for SPL, so that TPL can jump to SPL.
*/
binman_sym_extern(ulong, u_boot_any, image_pos);
binman_sym_extern(ulong, u_boot_any, size);
binman_sym_extern(ulong, spl, image_pos);
binman_sym_extern(ulong, spl, size);
/**
* spl_get_image_pos() - get the image position of the next phase
*
* This returns the image position to use to load the next phase of U-Boot
*/
ulong spl_get_image_pos(void);
/**
* spl_get_image_size() - get the size of the next phase
*
* This returns the size to use to load the next phase of U-Boot
*/
ulong spl_get_image_size(void);
/**
* spl_load_simple_fit_skip_processing() - Hook to allow skipping the FIT
* image processing during spl_load_simple_fit().
*
* Return true to skip FIT processing, false to preserve the full code flow
* of spl_load_simple_fit().
*/
bool spl_load_simple_fit_skip_processing(void);
/**
* spl_load_simple_fit() - Loads a fit image from a device.
* @spl_image: Image description to set up
* @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_image_info *spl_image,
struct spl_load_info *info, ulong sector, void *fdt);
#define SPL_COPY_PAYLOAD_ONLY 1
#define SPL_FIT_FOUND 2
/**
* spl_load_imx_container() - Loads a imx container image from a device.
* @spl_image: Image description to set up
* @info: Structure containing the information required to load data.
* @sector: Sector number where container image is located in the device
*
* Reads the container image @sector in the device. Loads u-boot image to
* specified load address.
*/
int spl_load_imx_container(struct spl_image_info *spl_image,
struct spl_load_info *info, ulong sector);
/* SPL common functions */
void preloader_console_init(void);
u32 spl_boot_device(void);
u32 spl_boot_mode(const u32 boot_device);
int spl_boot_partition(const u32 boot_device);
void spl_set_bd(void);
/**
* 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.
*
* @spl_image: Image description to set up
*/
void spl_set_header_raw_uboot(struct spl_image_info *spl_image);
/**
* 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
* enabled, then this causes a panic. If CONFIG_SPL_RAW_IMAGE_SUPPORT is not
* 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);
void spl_board_prepare_for_linux(void);
void spl_board_prepare_for_boot(void);
int spl_board_ubi_load_image(u32 boot_device);
int spl_board_boot_device(u32 boot_device);
/**
* 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
*/
void __noreturn jump_to_image_linux(struct spl_image_info *spl_image);
/**
* 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
*/
int spl_start_uboot(void);
/**
* 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.
*/
void spl_display_print(void);
/**
* 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;
};
/**
* Holds information about a way of loading an SPL image
*
* @name: User-friendly name for this method (e.g. "MMC")
* @boot_device: Boot device that this loader supports
* @load_image: Function to call to load image
*/
struct spl_image_loader {
#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
const char *name;
#endif
uint boot_device;
/**
* load_image() - Load an SPL image
*
* @spl_image: place to put image information
* @bootdev: describes the boot device to load from
*/
int (*load_image)(struct spl_image_info *spl_image,
struct spl_boot_device *bootdev);
};
/* Declare an SPL image loader */
#define SPL_LOAD_IMAGE(__name) \
ll_entry_declare(struct spl_image_loader, __name, spl_image_loader)
/*
* _priority is the priority of this method, 0 meaning it will be the top
* choice for this device, 9 meaning it is the bottom choice.
* _boot_device is the BOOT_DEVICE_... value
* _method is the load_image function to call
*/
#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
#define SPL_LOAD_IMAGE_METHOD(_name, _priority, _boot_device, _method) \
SPL_LOAD_IMAGE(_boot_device ## _priority ## _method) = { \
.name = _name, \
.boot_device = _boot_device, \
.load_image = _method, \
}
#else
#define SPL_LOAD_IMAGE_METHOD(_name, _priority, _boot_device, _method) \
SPL_LOAD_IMAGE(_boot_device ## _priority ## _method) = { \
.boot_device = _boot_device, \
.load_image = _method, \
}
#endif
/* SPL FAT image functions */
int spl_load_image_fat(struct spl_image_info *spl_image,
struct blk_desc *block_dev, int partition,
const char *filename);
int spl_load_image_fat_os(struct spl_image_info *spl_image,
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 spl_image_info *spl_image,
struct blk_desc *block_dev, int partition,
const char *filename);
int spl_load_image_ext_os(struct spl_image_info *spl_image,
struct blk_desc *block_dev, int partition);
/**
* spl_early_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.
*
* 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.
*
* 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);
/**
* 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);
int spl_mmc_load_image(struct spl_image_info *spl_image,
struct spl_boot_device *bootdev);
/**
* spl_mmc_load() - Load an image file from MMC/SD media
*
* @param spl_image Image data filled in by loading process
* @param bootdev Describes which device to load from
* @param filename Name of file to load (in FS mode)
* @param raw_part Partition to load from (in RAW mode)
* @param raw_sect Sector to load from (in RAW mode)
*
* @return 0 on success, otherwise error code
*/
int spl_mmc_load(struct spl_image_info *spl_image,
struct spl_boot_device *bootdev,
const char *filename,
int raw_part,
unsigned long raw_sect);
int spl_ymodem_load_image(struct spl_image_info *spl_image,
struct spl_boot_device *bootdev);
/**
* spl_invoke_atf - boot using an ARM trusted firmware image
*/
void spl_invoke_atf(struct spl_image_info *spl_image);
/**
* bl2_plat_get_bl31_params() - prepare params for bl31.
* @bl32_entry address of BL32 executable (secure)
* @bl33_entry address of BL33 executable (non secure)
* @fdt_addr address of Flat Device Tree
*
* This function assigns a pointer to the memory that the platform has kept
* aside to pass platform specific and trusted firmware related information
* to BL31. This memory is allocated by allocating memory to
* bl2_to_bl31_params_mem structure which is a superset of all the
* structure whose information is passed to BL31
* NOTE: This function should be called only once and should be done
* before generating params to BL31
*
* @return bl31 params structure pointer
*/
struct bl31_params *bl2_plat_get_bl31_params(uintptr_t bl32_entry,
uintptr_t bl33_entry,
uintptr_t fdt_addr);
/**
* spl_optee_entry - entry function for optee
*
* args defind in op-tee project
* https://github.com/OP-TEE/optee_os/
* core/arch/arm/kernel/generic_entry_a32.S
* @arg0: pagestore
* @arg1: (ARMv7 standard bootarg #1)
* @arg2: device tree address, (ARMv7 standard bootarg #2)
* @arg3: non-secure entry address (ARMv7 bootarg #0)
*/
void spl_optee_entry(void *arg0, void *arg1, void *arg2, void *arg3);
/**
* spl_invoke_opensbi - boot using a RISC-V OpenSBI image
*/
void spl_invoke_opensbi(struct spl_image_info *spl_image);
/**
* 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'.
*/
int board_return_to_bootrom(struct spl_image_info *spl_image,
struct spl_boot_device *bootdev);
/**
* board_spl_fit_post_load - allow process images after loading finished
*
*/
void board_spl_fit_post_load(ulong load_addr, size_t length);
/**
* board_spl_fit_size_align - specific size align before processing payload
*
*/
ulong board_spl_fit_size_align(ulong size);
/**
* spl_perform_fixups() - arch/board-specific callback before processing
* the boot-payload
*/
void spl_perform_fixups(struct spl_image_info *spl_image);
/*
* spl_get_load_buffer() - get buffer for loading partial image data
*
* Returns memory area which can be populated by partial image data,
* ie. uImage or fitImage header.
*/
struct image_header *spl_get_load_buffer(ssize_t offset, size_t size);
#endif