1 /* SPDX-License-Identifier: GPL-2.0+ */
4 * Texas Instruments, <www.ti.com>
9 #include <binman_sym.h>
11 /* Platform-specific defines */
12 #include <linux/compiler.h>
15 /* Value in r0 indicates we booted from U-Boot */
16 #define UBOOT_NOT_LOADED_FROM_SPL 0x13578642
19 #define MMCSD_MODE_UNDEFINED 0
20 #define MMCSD_MODE_RAW 1
21 #define MMCSD_MODE_FS 2
22 #define MMCSD_MODE_EMMCBOOT 3
24 struct spl_image_info {
28 uintptr_t entry_point;
29 #if CONFIG_IS_ENABLED(LOAD_FIT)
39 * Information required to load data from a device
41 * @dev: Pointer to the device, e.g. struct mmc *
42 * @priv: Private data for the device
43 * @bl_len: Block length for reading in bytes
44 * @filename: Name of the fit image file.
45 * @read: Function to call to read from the device
47 struct spl_load_info {
52 ulong (*read)(struct spl_load_info *load, ulong sector, ulong count,
57 * We need to know the position of U-Boot in memory so we can jump to it. We
58 * allow any U-Boot binary to be used (u-boot.bin, u-boot-nodtb.bin,
59 * u-boot.img), hence the '_any'. These is no checking here that the correct
60 * image is found. For * example if u-boot.img is used we don't check that
61 * spl_parse_image_header() can parse a valid header.
63 binman_sym_extern(ulong, u_boot_any, image_pos);
66 * spl_load_simple_fit() - Loads a fit image from a device.
67 * @spl_image: Image description to set up
68 * @info: Structure containing the information required to load data.
69 * @sector: Sector number where FIT image is located in the device
70 * @fdt: Pointer to the copied FIT header.
72 * Reads the FIT image @sector in the device. Loads u-boot image to
73 * specified load address and copies the dtb to end of u-boot image.
74 * Returns 0 on success.
76 int spl_load_simple_fit(struct spl_image_info *spl_image,
77 struct spl_load_info *info, ulong sector, void *fdt);
79 #define SPL_COPY_PAYLOAD_ONLY 1
81 /* SPL common functions */
82 void preloader_console_init(void);
83 u32 spl_boot_device(void);
84 u32 spl_boot_mode(const u32 boot_device);
85 int spl_boot_partition(const u32 boot_device);
86 void spl_set_bd(void);
89 * spl_set_header_raw_uboot() - Set up a standard SPL image structure
91 * This sets up the given spl_image which the standard values obtained from
92 * config options: CONFIG_SYS_MONITOR_LEN, CONFIG_SYS_UBOOT_START,
93 * CONFIG_SYS_TEXT_BASE.
95 * @spl_image: Image description to set up
97 void spl_set_header_raw_uboot(struct spl_image_info *spl_image);
100 * spl_parse_image_header() - parse the image header and set up info
102 * This parses the legacy image header information at @header and sets up
103 * @spl_image according to what is found. If no image header is found, then
104 * a raw image or bootz is assumed. If CONFIG_SPL_PANIC_ON_RAW_IMAGE is
105 * enabled, then this causes a panic. If CONFIG_SPL_RAW_IMAGE_SUPPORT is not
106 * enabled then U-Boot gives up. Otherwise U-Boot sets up the image using
107 * spl_set_header_raw_uboot(), or possibly the bootz header.
109 * @spl_image: Image description to set up
110 * @header image header to parse
111 * @return 0 if a header was correctly parsed, -ve on error
113 int spl_parse_image_header(struct spl_image_info *spl_image,
114 const struct image_header *header);
116 void spl_board_prepare_for_linux(void);
117 void spl_board_prepare_for_boot(void);
118 int spl_board_ubi_load_image(u32 boot_device);
121 * jump_to_image_linux() - Jump to a Linux kernel from SPL
123 * This jumps into a Linux kernel using the information in @spl_image.
125 * @spl_image: Image description to set up
127 void __noreturn jump_to_image_linux(struct spl_image_info *spl_image);
130 * spl_start_uboot() - Check if SPL should start the kernel or U-Boot
132 * This is called by the various SPL loaders to determine whether the board
133 * wants to load the kernel or U-Boot. This function should be provided by
136 * @return 0 if SPL should start the kernel, 1 if U-Boot must be started
138 int spl_start_uboot(void);
141 * spl_display_print() - Display a board-specific message in SPL
143 * If CONFIG_SPL_DISPLAY_PRINT is enabled, U-Boot will call this function
144 * immediately after displaying the SPL console banner ("U-Boot SPL ...").
145 * This function should be provided by the board.
147 void spl_display_print(void);
150 * struct spl_boot_device - Describes a boot device used by SPL
152 * @boot_device: A number indicating the BOOT_DEVICE type. There are various
153 * BOOT_DEVICE... #defines and enums in U-Boot and they are not consistently
155 * @boot_device_name: Named boot device, or NULL if none.
157 * Note: Additional fields can be added here, bearing in mind that SPL is
158 * size-sensitive and common fields will be present on all boards. This
159 * struct can also be used to return additional information about the load
160 * process if that becomes useful.
162 struct spl_boot_device {
164 const char *boot_device_name;
168 * Holds information about a way of loading an SPL image
170 * @name: User-friendly name for this method (e.g. "MMC")
171 * @boot_device: Boot device that this loader supports
172 * @load_image: Function to call to load image
174 struct spl_image_loader {
175 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
180 * load_image() - Load an SPL image
182 * @spl_image: place to put image information
183 * @bootdev: describes the boot device to load from
185 int (*load_image)(struct spl_image_info *spl_image,
186 struct spl_boot_device *bootdev);
189 /* Declare an SPL image loader */
190 #define SPL_LOAD_IMAGE(__name) \
191 ll_entry_declare(struct spl_image_loader, __name, spl_image_loader)
194 * _priority is the priority of this method, 0 meaning it will be the top
195 * choice for this device, 9 meaning it is the bottom choice.
196 * _boot_device is the BOOT_DEVICE_... value
197 * _method is the load_image function to call
199 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
200 #define SPL_LOAD_IMAGE_METHOD(_name, _priority, _boot_device, _method) \
201 SPL_LOAD_IMAGE(_method ## _priority ## _boot_device) = { \
203 .boot_device = _boot_device, \
204 .load_image = _method, \
207 #define SPL_LOAD_IMAGE_METHOD(_name, _priority, _boot_device, _method) \
208 SPL_LOAD_IMAGE(_method ## _priority ## _boot_device) = { \
209 .boot_device = _boot_device, \
210 .load_image = _method, \
214 /* SPL FAT image functions */
215 int spl_load_image_fat(struct spl_image_info *spl_image,
216 struct blk_desc *block_dev, int partition,
217 const char *filename);
218 int spl_load_image_fat_os(struct spl_image_info *spl_image,
219 struct blk_desc *block_dev, int partition);
221 void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image);
223 /* SPL EXT image functions */
224 int spl_load_image_ext(struct spl_image_info *spl_image,
225 struct blk_desc *block_dev, int partition,
226 const char *filename);
227 int spl_load_image_ext_os(struct spl_image_info *spl_image,
228 struct blk_desc *block_dev, int partition);
231 * spl_early_init() - Set up device tree and driver model in SPL if enabled
233 * Call this function in board_init_f() if you want to use device tree and
234 * driver model early, before board_init_r() is called.
236 * If this is not called, then driver model will be inactive in SPL's
237 * board_init_f(), and no device tree will be available.
239 int spl_early_init(void);
242 * spl_init() - Set up device tree and driver model in SPL if enabled
244 * You can optionally call spl_early_init(), then optionally call spl_init().
245 * This function will be called from board_init_r() if not called earlier.
247 * Both spl_early_init() and spl_init() perform a similar function except that
248 * the latter will not set up the malloc() area if
249 * CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN is enabled, since it is assumed to
250 * already be done by a calll to spl_relocate_stack_gd() before board_init_r()
253 * This function will be called from board_init_r() if not called earlier.
255 * If this is not called, then driver model will be inactive in SPL's
256 * board_init_f(), and no device tree will be available.
260 #ifdef CONFIG_SPL_BOARD_INIT
261 void spl_board_init(void);
265 * spl_was_boot_source() - check if U-Boot booted from SPL
267 * This will normally be true, but if U-Boot jumps to second U-Boot, it will
268 * be false. This should be implemented by board-specific code.
270 * @return true if U-Boot booted from SPL, else false
272 bool spl_was_boot_source(void);
275 * spl_dfu_cmd- run dfu command with chosen mmc device interface
276 * @param usb_index - usb controller number
277 * @param mmc_dev - mmc device nubmer
279 * @return 0 on success, otherwise error code
281 int spl_dfu_cmd(int usbctrl, char *dfu_alt_info, char *interface, char *devstr);
283 int spl_mmc_load_image(struct spl_image_info *spl_image,
284 struct spl_boot_device *bootdev);
287 * spl_invoke_atf - boot using an ARM trusted firmware image
289 void spl_invoke_atf(struct spl_image_info *spl_image);
292 * spl_optee_entry - entry function for optee
294 * args defind in op-tee project
295 * https://github.com/OP-TEE/optee_os/
296 * core/arch/arm/kernel/generic_entry_a32.S
298 * @arg1: (ARMv7 standard bootarg #1)
299 * @arg2: device tree address, (ARMv7 standard bootarg #2)
300 * @arg3: non-secure entry address (ARMv7 bootarg #0)
302 void spl_optee_entry(void *arg0, void *arg1, void *arg2, void *arg3);
305 * board_return_to_bootrom - allow for boards to continue with the boot ROM
307 * If a board (e.g. the Rockchip RK3368 boards) provide some
308 * supporting functionality for SPL in their boot ROM and the SPL
309 * stage wants to return to the ROM code to continue booting, boards
310 * can implement 'board_return_to_bootrom'.
312 void board_return_to_bootrom(void);
315 * spl_perform_fixups() - arch/board-specific callback before processing
318 void spl_perform_fixups(struct spl_image_info *spl_image);
321 * spl_get_load_buffer() - get buffer for loading partial image data
323 * Returns memory area which can be populated by partial image data,
324 * ie. uImage or fitImage header.
326 struct image_header *spl_get_load_buffer(ssize_t offset, size_t size);