3 * Texas Instruments, <www.ti.com>
5 * SPDX-License-Identifier: GPL-2.0+
10 /* Platform-specific defines */
11 #include <linux/compiler.h>
14 /* Value in r0 indicates we booted from U-Boot */
15 #define UBOOT_NOT_LOADED_FROM_SPL 0x13578642
18 #define MMCSD_MODE_UNDEFINED 0
19 #define MMCSD_MODE_RAW 1
20 #define MMCSD_MODE_FS 2
21 #define MMCSD_MODE_EMMCBOOT 3
23 struct spl_image_info {
33 * Information required to load data from a device
35 * @dev: Pointer to the device, e.g. struct mmc *
36 * @priv: Private data for the device
37 * @bl_len: Block length for reading in bytes
38 * @filename: Name of the fit image file.
39 * @read: Function to call to read from the device
41 struct spl_load_info {
46 ulong (*read)(struct spl_load_info *load, ulong sector, ulong count,
51 * spl_load_simple_fit() - Loads a fit image from a device.
52 * @spl_image: Image description to set up
53 * @info: Structure containing the information required to load data.
54 * @sector: Sector number where FIT image is located in the device
55 * @fdt: Pointer to the copied FIT header.
57 * Reads the FIT image @sector in the device. Loads u-boot image to
58 * specified load address and copies the dtb to end of u-boot image.
59 * Returns 0 on success.
61 int spl_load_simple_fit(struct spl_image_info *spl_image,
62 struct spl_load_info *info, ulong sector, void *fdt);
64 #define SPL_COPY_PAYLOAD_ONLY 1
66 /* SPL common functions */
67 void preloader_console_init(void);
68 u32 spl_boot_device(void);
69 u32 spl_boot_mode(const u32 boot_device);
72 * spl_set_header_raw_uboot() - Set up a standard SPL image structure
74 * This sets up the given spl_image which the standard values obtained from
75 * config options: CONFIG_SYS_MONITOR_LEN, CONFIG_SYS_UBOOT_START,
76 * CONFIG_SYS_TEXT_BASE.
78 * @spl_image: Image description to set up
80 void spl_set_header_raw_uboot(struct spl_image_info *spl_image);
83 * spl_parse_image_header() - parse the image header and set up info
85 * This parses the legacy image header information at @header and sets up
86 * @spl_image according to what is found. If no image header is found, then
87 * a raw image or bootz is assumed. If CONFIG_SPL_PANIC_ON_RAW_IMAGE is
88 * enabled, then this causes a panic. If CONFIG_SPL_ABORT_ON_RAW_IMAGE is
89 * enabled then U-Boot gives up. Otherwise U-Boot sets up the image using
90 * spl_set_header_raw_uboot(), or possibly the bootz header.
92 * @spl_image: Image description to set up
93 * @header image header to parse
94 * @return 0 if a header was correctly parsed, -ve on error
96 int spl_parse_image_header(struct spl_image_info *spl_image,
97 const struct image_header *header);
99 void spl_board_prepare_for_linux(void);
100 void spl_board_prepare_for_boot(void);
101 int spl_board_ubi_load_image(u32 boot_device);
104 * jump_to_image_linux() - Jump to a Linux kernel from SPL
106 * This jumps into a Linux kernel using the information in @spl_image.
108 * @spl_image: Image description to set up
109 * @arg: Argument to pass to Linux (typically a device tree pointer)
111 void __noreturn jump_to_image_linux(struct spl_image_info *spl_image,
115 * spl_start_uboot() - Check if SPL should start the kernel or U-Boot
117 * This is called by the various SPL loaders to determine whether the board
118 * wants to load the kernel or U-Boot. This function should be provided by
121 * @return 0 if SPL should start the kernel, 1 if U-Boot must be started
123 int spl_start_uboot(void);
126 * spl_display_print() - Display a board-specific message in SPL
128 * If CONFIG_SPL_DISPLAY_PRINT is enabled, U-Boot will call this function
129 * immediately after displaying the SPL console banner ("U-Boot SPL ...").
130 * This function should be provided by the board.
132 void spl_display_print(void);
135 * struct spl_boot_device - Describes a boot device used by SPL
137 * @boot_device: A number indicating the BOOT_DEVICE type. There are various
138 * BOOT_DEVICE... #defines and enums in U-Boot and they are not consistently
140 * @boot_device_name: Named boot device, or NULL if none.
142 * Note: Additional fields can be added here, bearing in mind that SPL is
143 * size-sensitive and common fields will be present on all boards. This
144 * struct can also be used to return additional information about the load
145 * process if that becomes useful.
147 struct spl_boot_device {
149 const char *boot_device_name;
153 * Holds information about a way of loading an SPL image
155 * @boot_device: Boot device that this loader supports
156 * @load_image: Function to call to load image
158 struct spl_image_loader {
161 * load_image() - Load an SPL image
163 * @spl_image: place to put image information
164 * @bootdev: describes the boot device to load from
166 int (*load_image)(struct spl_image_info *spl_image,
167 struct spl_boot_device *bootdev);
170 /* Declare an SPL image loader */
171 #define SPL_LOAD_IMAGE(__name) \
172 ll_entry_declare(struct spl_image_loader, __name, spl_image_loader)
175 * __priority is the priority of this method, 0 meaning it will be the top
176 * choice for this device, 9 meaning it is the bottom choice.
177 * __boot_device is the BOOT_DEVICE_... value
178 * __method is the load_image function to call
180 #define SPL_LOAD_IMAGE_METHOD(__priority, __boot_device, __method) \
181 SPL_LOAD_IMAGE(__method ## __priority ## __boot_device) = { \
182 .boot_device = __boot_device, \
183 .load_image = __method, \
186 /* SPL FAT image functions */
187 int spl_load_image_fat(struct spl_image_info *spl_image,
188 struct blk_desc *block_dev, int partition,
189 const char *filename);
190 int spl_load_image_fat_os(struct spl_image_info *spl_image,
191 struct blk_desc *block_dev, int partition);
193 void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image);
195 /* SPL EXT image functions */
196 int spl_load_image_ext(struct spl_image_info *spl_image,
197 struct blk_desc *block_dev, int partition,
198 const char *filename);
199 int spl_load_image_ext_os(struct spl_image_info *spl_image,
200 struct blk_desc *block_dev, int partition);
203 * spl_init() - Set up device tree and driver model in SPL if enabled
205 * Call this function in board_init_f() if you want to use device tree and
206 * driver model early, before board_init_r() is called. This function will
207 * be called from board_init_r() if not called earlier.
209 * If this is not called, then driver model will be inactive in SPL's
210 * board_init_f(), and no device tree will be available.
214 #ifdef CONFIG_SPL_BOARD_INIT
215 void spl_board_init(void);
219 * spl_was_boot_source() - check if U-Boot booted from SPL
221 * This will normally be true, but if U-Boot jumps to second U-Boot, it will
222 * be false. This should be implemented by board-specific code.
224 * @return true if U-Boot booted from SPL, else false
226 bool spl_was_boot_source(void);
229 * spl_dfu_cmd- run dfu command with chosen mmc device interface
230 * @param usb_index - usb controller number
231 * @param mmc_dev - mmc device nubmer
233 * @return 0 on success, otherwise error code
235 int spl_dfu_cmd(int usbctrl, char *dfu_alt_info, char *interface, char *devstr);
237 int spl_mmc_load_image(struct spl_image_info *spl_image,
238 struct spl_boot_device *bootdev);