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
25 * u_boot_first_phase() - check if this is the first U-Boot phase
27 * U-Boot has up to three phases: TPL, SPL and U-Boot proper. Depending on the
28 * build flags we can determine whether the current build is for the first
29 * phase of U-Boot or not. If there is no SPL, then this is U-Boot proper. If
30 * there is SPL but no TPL, the the first phase is SPL. If there is TPL, then
31 * it is the first phase.
33 * @returns true if this is the first phase of U-Boot
36 static inline bool u_boot_first_phase(void)
38 if (IS_ENABLED(CONFIG_TPL)) {
39 if (IS_ENABLED(CONFIG_TPL_BUILD))
41 } else if (IS_ENABLED(CONFIG_SPL)) {
42 if (IS_ENABLED(CONFIG_SPL_BUILD))
51 struct spl_image_info {
55 uintptr_t entry_point;
56 #if CONFIG_IS_ENABLED(LOAD_FIT)
66 * Information required to load data from a device
68 * @dev: Pointer to the device, e.g. struct mmc *
69 * @priv: Private data for the device
70 * @bl_len: Block length for reading in bytes
71 * @filename: Name of the fit image file.
72 * @read: Function to call to read from the device
74 struct spl_load_info {
79 ulong (*read)(struct spl_load_info *load, ulong sector, ulong count,
84 * We need to know the position of U-Boot in memory so we can jump to it. We
85 * allow any U-Boot binary to be used (u-boot.bin, u-boot-nodtb.bin,
86 * u-boot.img), hence the '_any'. These is no checking here that the correct
87 * image is found. For * example if u-boot.img is used we don't check that
88 * spl_parse_image_header() can parse a valid header.
90 binman_sym_extern(ulong, u_boot_any, image_pos);
93 * spl_load_simple_fit() - Loads a fit image from a device.
94 * @spl_image: Image description to set up
95 * @info: Structure containing the information required to load data.
96 * @sector: Sector number where FIT image is located in the device
97 * @fdt: Pointer to the copied FIT header.
99 * Reads the FIT image @sector in the device. Loads u-boot image to
100 * specified load address and copies the dtb to end of u-boot image.
101 * Returns 0 on success.
103 int spl_load_simple_fit(struct spl_image_info *spl_image,
104 struct spl_load_info *info, ulong sector, void *fdt);
106 #define SPL_COPY_PAYLOAD_ONLY 1
108 /* SPL common functions */
109 void preloader_console_init(void);
110 u32 spl_boot_device(void);
111 u32 spl_boot_mode(const u32 boot_device);
112 int spl_boot_partition(const u32 boot_device);
113 void spl_set_bd(void);
116 * spl_set_header_raw_uboot() - Set up a standard SPL image structure
118 * This sets up the given spl_image which the standard values obtained from
119 * config options: CONFIG_SYS_MONITOR_LEN, CONFIG_SYS_UBOOT_START,
120 * CONFIG_SYS_TEXT_BASE.
122 * @spl_image: Image description to set up
124 void spl_set_header_raw_uboot(struct spl_image_info *spl_image);
127 * spl_parse_image_header() - parse the image header and set up info
129 * This parses the legacy image header information at @header and sets up
130 * @spl_image according to what is found. If no image header is found, then
131 * a raw image or bootz is assumed. If CONFIG_SPL_PANIC_ON_RAW_IMAGE is
132 * enabled, then this causes a panic. If CONFIG_SPL_RAW_IMAGE_SUPPORT is not
133 * enabled then U-Boot gives up. Otherwise U-Boot sets up the image using
134 * spl_set_header_raw_uboot(), or possibly the bootz header.
136 * @spl_image: Image description to set up
137 * @header image header to parse
138 * @return 0 if a header was correctly parsed, -ve on error
140 int spl_parse_image_header(struct spl_image_info *spl_image,
141 const struct image_header *header);
143 void spl_board_prepare_for_linux(void);
144 void spl_board_prepare_for_boot(void);
145 int spl_board_ubi_load_image(u32 boot_device);
148 * jump_to_image_linux() - Jump to a Linux kernel from SPL
150 * This jumps into a Linux kernel using the information in @spl_image.
152 * @spl_image: Image description to set up
154 void __noreturn jump_to_image_linux(struct spl_image_info *spl_image);
157 * spl_start_uboot() - Check if SPL should start the kernel or U-Boot
159 * This is called by the various SPL loaders to determine whether the board
160 * wants to load the kernel or U-Boot. This function should be provided by
163 * @return 0 if SPL should start the kernel, 1 if U-Boot must be started
165 int spl_start_uboot(void);
168 * spl_display_print() - Display a board-specific message in SPL
170 * If CONFIG_SPL_DISPLAY_PRINT is enabled, U-Boot will call this function
171 * immediately after displaying the SPL console banner ("U-Boot SPL ...").
172 * This function should be provided by the board.
174 void spl_display_print(void);
177 * struct spl_boot_device - Describes a boot device used by SPL
179 * @boot_device: A number indicating the BOOT_DEVICE type. There are various
180 * BOOT_DEVICE... #defines and enums in U-Boot and they are not consistently
182 * @boot_device_name: Named boot device, or NULL if none.
184 * Note: Additional fields can be added here, bearing in mind that SPL is
185 * size-sensitive and common fields will be present on all boards. This
186 * struct can also be used to return additional information about the load
187 * process if that becomes useful.
189 struct spl_boot_device {
191 const char *boot_device_name;
195 * Holds information about a way of loading an SPL image
197 * @name: User-friendly name for this method (e.g. "MMC")
198 * @boot_device: Boot device that this loader supports
199 * @load_image: Function to call to load image
201 struct spl_image_loader {
202 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
207 * load_image() - Load an SPL image
209 * @spl_image: place to put image information
210 * @bootdev: describes the boot device to load from
212 int (*load_image)(struct spl_image_info *spl_image,
213 struct spl_boot_device *bootdev);
216 /* Declare an SPL image loader */
217 #define SPL_LOAD_IMAGE(__name) \
218 ll_entry_declare(struct spl_image_loader, __name, spl_image_loader)
221 * _priority is the priority of this method, 0 meaning it will be the top
222 * choice for this device, 9 meaning it is the bottom choice.
223 * _boot_device is the BOOT_DEVICE_... value
224 * _method is the load_image function to call
226 #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
227 #define SPL_LOAD_IMAGE_METHOD(_name, _priority, _boot_device, _method) \
228 SPL_LOAD_IMAGE(_method ## _priority ## _boot_device) = { \
230 .boot_device = _boot_device, \
231 .load_image = _method, \
234 #define SPL_LOAD_IMAGE_METHOD(_name, _priority, _boot_device, _method) \
235 SPL_LOAD_IMAGE(_method ## _priority ## _boot_device) = { \
236 .boot_device = _boot_device, \
237 .load_image = _method, \
241 /* SPL FAT image functions */
242 int spl_load_image_fat(struct spl_image_info *spl_image,
243 struct blk_desc *block_dev, int partition,
244 const char *filename);
245 int spl_load_image_fat_os(struct spl_image_info *spl_image,
246 struct blk_desc *block_dev, int partition);
248 void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image);
250 /* SPL EXT image functions */
251 int spl_load_image_ext(struct spl_image_info *spl_image,
252 struct blk_desc *block_dev, int partition,
253 const char *filename);
254 int spl_load_image_ext_os(struct spl_image_info *spl_image,
255 struct blk_desc *block_dev, int partition);
258 * spl_early_init() - Set up device tree and driver model in SPL if enabled
260 * Call this function in board_init_f() if you want to use device tree and
261 * driver model early, before board_init_r() is called.
263 * If this is not called, then driver model will be inactive in SPL's
264 * board_init_f(), and no device tree will be available.
266 int spl_early_init(void);
269 * spl_init() - Set up device tree and driver model in SPL if enabled
271 * You can optionally call spl_early_init(), then optionally call spl_init().
272 * This function will be called from board_init_r() if not called earlier.
274 * Both spl_early_init() and spl_init() perform a similar function except that
275 * the latter will not set up the malloc() area if
276 * CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN is enabled, since it is assumed to
277 * already be done by a calll to spl_relocate_stack_gd() before board_init_r()
280 * This function will be called from board_init_r() if not called earlier.
282 * If this is not called, then driver model will be inactive in SPL's
283 * board_init_f(), and no device tree will be available.
287 #ifdef CONFIG_SPL_BOARD_INIT
288 void spl_board_init(void);
292 * spl_was_boot_source() - check if U-Boot booted from SPL
294 * This will normally be true, but if U-Boot jumps to second U-Boot, it will
295 * be false. This should be implemented by board-specific code.
297 * @return true if U-Boot booted from SPL, else false
299 bool spl_was_boot_source(void);
302 * spl_dfu_cmd- run dfu command with chosen mmc device interface
303 * @param usb_index - usb controller number
304 * @param mmc_dev - mmc device nubmer
306 * @return 0 on success, otherwise error code
308 int spl_dfu_cmd(int usbctrl, char *dfu_alt_info, char *interface, char *devstr);
310 int spl_mmc_load_image(struct spl_image_info *spl_image,
311 struct spl_boot_device *bootdev);
314 * spl_invoke_atf - boot using an ARM trusted firmware image
316 void spl_invoke_atf(struct spl_image_info *spl_image);
319 * spl_optee_entry - entry function for optee
321 * args defind in op-tee project
322 * https://github.com/OP-TEE/optee_os/
323 * core/arch/arm/kernel/generic_entry_a32.S
325 * @arg1: (ARMv7 standard bootarg #1)
326 * @arg2: device tree address, (ARMv7 standard bootarg #2)
327 * @arg3: non-secure entry address (ARMv7 bootarg #0)
329 void spl_optee_entry(void *arg0, void *arg1, void *arg2, void *arg3);
332 * board_return_to_bootrom - allow for boards to continue with the boot ROM
334 * If a board (e.g. the Rockchip RK3368 boards) provide some
335 * supporting functionality for SPL in their boot ROM and the SPL
336 * stage wants to return to the ROM code to continue booting, boards
337 * can implement 'board_return_to_bootrom'.
339 void board_return_to_bootrom(void);
342 * spl_perform_fixups() - arch/board-specific callback before processing
345 void spl_perform_fixups(struct spl_image_info *spl_image);
348 * spl_get_load_buffer() - get buffer for loading partial image data
350 * Returns memory area which can be populated by partial image data,
351 * ie. uImage or fitImage header.
353 struct image_header *spl_get_load_buffer(ssize_t offset, size_t size);