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 {
34 * Information required to load data from a device
36 * @dev: Pointer to the device, e.g. struct mmc *
37 * @priv: Private data for the device
38 * @bl_len: Block length for reading in bytes
39 * @filename: Name of the fit image file.
40 * @read: Function to call to read from the device
42 struct spl_load_info {
47 ulong (*read)(struct spl_load_info *load, ulong sector, ulong count,
52 * spl_load_simple_fit() - Loads a fit image from a device.
53 * @spl_image: Image description to set up
54 * @info: Structure containing the information required to load data.
55 * @sector: Sector number where FIT image is located in the device
56 * @fdt: Pointer to the copied FIT header.
58 * Reads the FIT image @sector in the device. Loads u-boot image to
59 * specified load address and copies the dtb to end of u-boot image.
60 * Returns 0 on success.
62 int spl_load_simple_fit(struct spl_image_info *spl_image,
63 struct spl_load_info *info, ulong sector, void *fdt);
65 #define SPL_COPY_PAYLOAD_ONLY 1
67 /* SPL common functions */
68 void preloader_console_init(void);
69 u32 spl_boot_device(void);
70 u32 spl_boot_mode(const u32 boot_device);
71 void spl_set_bd(void);
74 * spl_set_header_raw_uboot() - Set up a standard SPL image structure
76 * This sets up the given spl_image which the standard values obtained from
77 * config options: CONFIG_SYS_MONITOR_LEN, CONFIG_SYS_UBOOT_START,
78 * CONFIG_SYS_TEXT_BASE.
80 * @spl_image: Image description to set up
82 void spl_set_header_raw_uboot(struct spl_image_info *spl_image);
85 * spl_parse_image_header() - parse the image header and set up info
87 * This parses the legacy image header information at @header and sets up
88 * @spl_image according to what is found. If no image header is found, then
89 * a raw image or bootz is assumed. If CONFIG_SPL_PANIC_ON_RAW_IMAGE is
90 * enabled, then this causes a panic. If CONFIG_SPL_RAW_IMAGE_SUPPORT is not
91 * enabled then U-Boot gives up. Otherwise U-Boot sets up the image using
92 * spl_set_header_raw_uboot(), or possibly the bootz header.
94 * @spl_image: Image description to set up
95 * @header image header to parse
96 * @return 0 if a header was correctly parsed, -ve on error
98 int spl_parse_image_header(struct spl_image_info *spl_image,
99 const struct image_header *header);
101 void spl_board_prepare_for_linux(void);
102 void spl_board_prepare_for_boot(void);
103 int spl_board_ubi_load_image(u32 boot_device);
106 * jump_to_image_linux() - Jump to a Linux kernel from SPL
108 * This jumps into a Linux kernel using the information in @spl_image.
110 * @spl_image: Image description to set up
112 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 * @name: User-friendly name for this method (e.g. "MMC")
156 * @boot_device: Boot device that this loader supports
157 * @load_image: Function to call to load image
159 struct spl_image_loader {
160 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
165 * load_image() - Load an SPL image
167 * @spl_image: place to put image information
168 * @bootdev: describes the boot device to load from
170 int (*load_image)(struct spl_image_info *spl_image,
171 struct spl_boot_device *bootdev);
174 /* Declare an SPL image loader */
175 #define SPL_LOAD_IMAGE(__name) \
176 ll_entry_declare(struct spl_image_loader, __name, spl_image_loader)
179 * _priority is the priority of this method, 0 meaning it will be the top
180 * choice for this device, 9 meaning it is the bottom choice.
181 * _boot_device is the BOOT_DEVICE_... value
182 * _method is the load_image function to call
184 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
185 #define SPL_LOAD_IMAGE_METHOD(_name, _priority, _boot_device, _method) \
186 SPL_LOAD_IMAGE(_method ## _priority ## _boot_device) = { \
188 .boot_device = _boot_device, \
189 .load_image = _method, \
192 #define SPL_LOAD_IMAGE_METHOD(_name, _priority, _boot_device, _method) \
193 SPL_LOAD_IMAGE(_method ## _priority ## _boot_device) = { \
194 .boot_device = _boot_device, \
195 .load_image = _method, \
199 /* SPL FAT image functions */
200 int spl_load_image_fat(struct spl_image_info *spl_image,
201 struct blk_desc *block_dev, int partition,
202 const char *filename);
203 int spl_load_image_fat_os(struct spl_image_info *spl_image,
204 struct blk_desc *block_dev, int partition);
206 void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image);
208 /* SPL EXT image functions */
209 int spl_load_image_ext(struct spl_image_info *spl_image,
210 struct blk_desc *block_dev, int partition,
211 const char *filename);
212 int spl_load_image_ext_os(struct spl_image_info *spl_image,
213 struct blk_desc *block_dev, int partition);
216 * spl_early_init() - Set up device tree and driver model in SPL if enabled
218 * Call this function in board_init_f() if you want to use device tree and
219 * driver model early, before board_init_r() is called.
221 * If this is not called, then driver model will be inactive in SPL's
222 * board_init_f(), and no device tree will be available.
224 int spl_early_init(void);
227 * spl_init() - Set up device tree and driver model in SPL if enabled
229 * You can optionally call spl_early_init(), then optionally call spl_init().
230 * This function will be called from board_init_r() if not called earlier.
232 * Both spl_early_init() and spl_init() perform a similar function except that
233 * the latter will not set up the malloc() area if
234 * CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN is enabled, since it is assumed to
235 * already be done by a calll to spl_relocate_stack_gd() before board_init_r()
238 * This function will be called from board_init_r() if not called earlier.
240 * If this is not called, then driver model will be inactive in SPL's
241 * board_init_f(), and no device tree will be available.
245 #ifdef CONFIG_SPL_BOARD_INIT
246 void spl_board_init(void);
250 * spl_was_boot_source() - check if U-Boot booted from SPL
252 * This will normally be true, but if U-Boot jumps to second U-Boot, it will
253 * be false. This should be implemented by board-specific code.
255 * @return true if U-Boot booted from SPL, else false
257 bool spl_was_boot_source(void);
260 * spl_dfu_cmd- run dfu command with chosen mmc device interface
261 * @param usb_index - usb controller number
262 * @param mmc_dev - mmc device nubmer
264 * @return 0 on success, otherwise error code
266 int spl_dfu_cmd(int usbctrl, char *dfu_alt_info, char *interface, char *devstr);
268 int spl_mmc_load_image(struct spl_image_info *spl_image,
269 struct spl_boot_device *bootdev);
271 void bl31_entry(void);
274 * board_return_to_bootrom - allow for boards to continue with the boot ROM
276 * If a board (e.g. the Rockchip RK3368 boards) provide some
277 * supporting functionality for SPL in their boot ROM and the SPL
278 * stage wants to return to the ROM code to continue booting, boards
279 * can implement 'board_return_to_bootrom'.
281 void board_return_to_bootrom(void);