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 extern struct spl_image_info spl_image;
68 /* SPL common functions */
69 void preloader_console_init(void);
70 u32 spl_boot_device(void);
71 u32 spl_boot_mode(const u32 boot_device);
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_ABORT_ON_RAW_IMAGE is
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
111 * @arg: Argument to pass to Linux (typically a device tree pointer)
113 void __noreturn jump_to_image_linux(struct spl_image_info *spl_image,
117 * spl_start_uboot() - Check if SPL should start the kernel or U-Boot
119 * This is called by the various SPL loaders to determine whether the board
120 * wants to load the kernel or U-Boot. This function should be provided by
123 * @return 0 if SPL should start the kernel, 1 if U-Boot must be started
125 int spl_start_uboot(void);
128 * spl_display_print() - Display a board-specific message in SPL
130 * If CONFIG_SPL_DISPLAY_PRINT is enabled, U-Boot will call this function
131 * immediately after displaying the SPL console banner ("U-Boot SPL ...").
132 * This function should be provided by the board.
134 void spl_display_print(void);
137 * struct spl_boot_device - Describes a boot device used by SPL
139 * @boot_device: A number indicating the BOOT_DEVICE type. There are various
140 * BOOT_DEVICE... #defines and enums in U-Boot and they are not consistently
142 * @boot_device_name: Named boot device, or NULL if none.
144 * Note: Additional fields can be added here, bearing in mind that SPL is
145 * size-sensitive and common fields will be present on all boards. This
146 * struct can also be used to return additional information about the load
147 * process if that becomes useful.
149 struct spl_boot_device {
151 const char *boot_device_name;
155 * Holds information about a way of loading an SPL image
157 * @boot_device: Boot device that this loader supports
158 * @load_image: Function to call to load image
160 struct spl_image_loader {
163 * load_image() - Load an SPL image
165 * @spl_image: place to put image information
166 * @bootdev: describes the boot device to load from
168 int (*load_image)(struct spl_image_info *spl_image,
169 struct spl_boot_device *bootdev);
172 /* Declare an SPL image loader */
173 #define SPL_LOAD_IMAGE(__name) \
174 ll_entry_declare(struct spl_image_loader, __name, spl_image_loader)
177 * __priority is the priority of this method, 0 meaning it will be the top
178 * choice for this device, 9 meaning it is the bottom choice.
179 * __boot_device is the BOOT_DEVICE_... value
180 * __method is the load_image function to call
182 #define SPL_LOAD_IMAGE_METHOD(__priority, __boot_device, __method) \
183 SPL_LOAD_IMAGE(__method ## __priority ## __boot_device) = { \
184 .boot_device = __boot_device, \
185 .load_image = __method, \
188 /* SPL FAT image functions */
189 int spl_load_image_fat(struct spl_image_info *spl_image,
190 struct blk_desc *block_dev, int partition,
191 const char *filename);
192 int spl_load_image_fat_os(struct spl_image_info *spl_image,
193 struct blk_desc *block_dev, int partition);
195 void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image);
197 /* SPL EXT image functions */
198 int spl_load_image_ext(struct spl_image_info *spl_image,
199 struct blk_desc *block_dev, int partition,
200 const char *filename);
201 int spl_load_image_ext_os(struct spl_image_info *spl_image,
202 struct blk_desc *block_dev, int partition);
205 * spl_init() - Set up device tree and driver model in SPL if enabled
207 * Call this function in board_init_f() if you want to use device tree and
208 * driver model early, before board_init_r() is called. This function will
209 * be called from board_init_r() if not called earlier.
211 * If this is not called, then driver model will be inactive in SPL's
212 * board_init_f(), and no device tree will be available.
216 #ifdef CONFIG_SPL_BOARD_INIT
217 void spl_board_init(void);
221 * spl_was_boot_source() - check if U-Boot booted from SPL
223 * This will normally be true, but if U-Boot jumps to second U-Boot, it will
224 * be false. This should be implemented by board-specific code.
226 * @return true if U-Boot booted from SPL, else false
228 bool spl_was_boot_source(void);
231 * spl_dfu_cmd- run dfu command with chosen mmc device interface
232 * @param usb_index - usb controller number
233 * @param mmc_dev - mmc device nubmer
235 * @return 0 on success, otherwise error code
237 int spl_dfu_cmd(int usbctrl, char *dfu_alt_info, char *interface, char *devstr);