mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-22 01:48:52 +09:00
![Simon Glass](/assets/img/avatar_default.png)
There is no need for this to be in the BSS region. By moving it we can delay use of BSS in SPL. This is useful for machines where the BSS region is not in writeable space. On 64-bit x86, SPL runs from SPI flash and it is easier to eliminate BSS use than link SPL to run with BSS at a particular cache-as-RAM (CAR) address. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Tom Rini <trini@konsulko.com>
238 lines
7.2 KiB
C
238 lines
7.2 KiB
C
/*
|
|
* (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.
|
|
* @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
|
|
|
|
/* SPL common functions */
|
|
void preloader_console_init(void);
|
|
u32 spl_boot_device(void);
|
|
u32 spl_boot_mode(const u32 boot_device);
|
|
|
|
/**
|
|
* 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_ABORT_ON_RAW_IMAGE is
|
|
* 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);
|
|
|
|
/**
|
|
* 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
|
|
* @arg: Argument to pass to Linux (typically a device tree pointer)
|
|
*/
|
|
void __noreturn jump_to_image_linux(struct spl_image_info *spl_image,
|
|
void *arg);
|
|
|
|
/**
|
|
* 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
|
|
*
|
|
* @boot_device: Boot device that this loader supports
|
|
* @load_image: Function to call to load image
|
|
*/
|
|
struct spl_image_loader {
|
|
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
|
|
*/
|
|
#define SPL_LOAD_IMAGE_METHOD(__priority, __boot_device, __method) \
|
|
SPL_LOAD_IMAGE(__method ## __priority ## __boot_device) = { \
|
|
.boot_device = __boot_device, \
|
|
.load_image = __method, \
|
|
}
|
|
|
|
/* 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_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);
|
|
|
|
/**
|
|
* 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);
|
|
|
|
#endif
|