3 * Texas Instruments, <www.ti.com>
5 * Aneesh V <aneesh@ti.com>
7 * SPDX-License-Identifier: GPL-2.0+
12 #include <asm/u-boot.h>
19 #include <linux/compiler.h>
20 #include <fdt_support.h>
22 DECLARE_GLOBAL_DATA_PTR;
24 #ifndef CONFIG_SYS_UBOOT_START
25 #define CONFIG_SYS_UBOOT_START CONFIG_SYS_TEXT_BASE
27 #ifndef CONFIG_SYS_MONITOR_LEN
28 /* Unknown U-Boot size, let's assume it will not be more than 200 KB */
29 #define CONFIG_SYS_MONITOR_LEN (200 * 1024)
32 u32 *boot_params_ptr = NULL;
34 /* Define board data structure */
35 static bd_t bdata __attribute__ ((section(".data")));
38 * Board-specific Platform code can reimplement show_boot_progress () if needed
40 __weak void show_boot_progress(int val) {}
43 * Default function to determine if u-boot or the OS should
44 * be started. This implementation always returns 1.
46 * Please implement your own board specific funcion to do this.
49 * 0 to not start u-boot
50 * positive if u-boot should start
52 #ifdef CONFIG_SPL_OS_BOOT
53 __weak int spl_start_uboot(void)
55 puts("SPL: Please implement spl_start_uboot() for your board\n");
56 puts("SPL: Direct Linux boot not active!\n");
60 /* weak default platform specific function to initialize
63 __weak int dram_init_banksize(void)
69 * Weak default function for arch specific zImage check. Return zero
70 * and fill start and end address if image is recognized.
72 int __weak bootz_setup(ulong image, ulong *start, ulong *end)
78 void spl_fixup_fdt(void)
80 #if defined(CONFIG_SPL_OF_LIBFDT) && defined(CONFIG_SYS_SPL_ARGS_ADDR)
81 void *fdt_blob = (void *)CONFIG_SYS_SPL_ARGS_ADDR;
84 err = fdt_check_header(fdt_blob);
86 printf("fdt_root: %s\n", fdt_strerror(err));
90 /* fixup the memory dt node */
91 err = fdt_shrink_to_minimum(fdt_blob, 0);
93 printf("spl: fdt_shrink_to_minimum err - %d\n", err);
97 err = arch_fixup_fdt(fdt_blob);
99 printf("spl: arch_fixup_fdt err - %d\n", err);
106 * Weak default function for board specific cleanup/preparation before
107 * Linux boot. Some boards/platforms might not need it, so just provide
108 * an empty stub here.
110 __weak void spl_board_prepare_for_linux(void)
115 __weak void spl_board_prepare_for_boot(void)
120 void spl_set_header_raw_uboot(struct spl_image_info *spl_image)
122 spl_image->size = CONFIG_SYS_MONITOR_LEN;
123 spl_image->entry_point = CONFIG_SYS_UBOOT_START;
124 #ifdef CONFIG_CPU_V7M
125 spl_image->entry_point |= 0x1;
127 spl_image->load_addr = CONFIG_SYS_TEXT_BASE;
128 spl_image->os = IH_OS_U_BOOT;
129 spl_image->name = "U-Boot";
132 int spl_parse_image_header(struct spl_image_info *spl_image,
133 const struct image_header *header)
135 if (image_get_magic(header) == IH_MAGIC) {
136 #ifdef CONFIG_SPL_LEGACY_IMAGE_SUPPORT
137 u32 header_size = sizeof(struct image_header);
139 if (spl_image->flags & SPL_COPY_PAYLOAD_ONLY) {
141 * On some system (e.g. powerpc), the load-address and
142 * entry-point is located at address 0. We can't load
143 * to 0-0x40. So skip header in this case.
145 spl_image->load_addr = image_get_load(header);
146 spl_image->entry_point = image_get_ep(header);
147 spl_image->size = image_get_data_size(header);
149 spl_image->entry_point = image_get_load(header);
150 /* Load including the header */
151 spl_image->load_addr = spl_image->entry_point -
153 spl_image->size = image_get_data_size(header) +
156 spl_image->os = image_get_os(header);
157 spl_image->name = image_get_name(header);
158 debug("spl: payload image: %.*s load addr: 0x%lx size: %d\n",
159 (int)sizeof(spl_image->name), spl_image->name,
160 spl_image->load_addr, spl_image->size);
162 /* LEGACY image not supported */
163 debug("Legacy boot image support not enabled, proceeding to other boot methods");
167 #ifdef CONFIG_SPL_PANIC_ON_RAW_IMAGE
169 * CONFIG_SPL_PANIC_ON_RAW_IMAGE is defined when the
170 * code which loads images in SPL cannot guarantee that
171 * absolutely all read errors will be reported.
172 * An example is the LPC32XX MLC NAND driver, which
173 * will consider that a completely unreadable NAND block
174 * is bad, and thus should be skipped silently.
176 panic("** no mkimage signature but raw image not supported");
179 #ifdef CONFIG_SPL_OS_BOOT
182 if (!bootz_setup((ulong)header, &start, &end)) {
183 spl_image->name = "Linux";
184 spl_image->os = IH_OS_LINUX;
185 spl_image->load_addr = CONFIG_SYS_LOAD_ADDR;
186 spl_image->entry_point = CONFIG_SYS_LOAD_ADDR;
187 spl_image->size = end - start;
188 debug("spl: payload zImage, load addr: 0x%lx size: %d\n",
189 spl_image->load_addr, spl_image->size);
194 #ifdef CONFIG_SPL_RAW_IMAGE_SUPPORT
195 /* Signature not found - assume u-boot.bin */
196 debug("mkimage signature not found - ih_magic = %x\n",
198 spl_set_header_raw_uboot(spl_image);
200 /* RAW image not supported, proceed to other boot methods. */
201 debug("Raw boot image support not enabled, proceeding to other boot methods");
209 __weak void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
211 typedef void __noreturn (*image_entry_noargs_t)(void);
213 image_entry_noargs_t image_entry =
214 (image_entry_noargs_t)spl_image->entry_point;
216 debug("image entry point: 0x%lX\n", spl_image->entry_point);
220 static int spl_common_init(bool setup_malloc)
224 debug("spl_early_init()\n");
226 #if defined(CONFIG_SYS_MALLOC_F_LEN)
228 #ifdef CONFIG_MALLOC_F_ADDR
229 gd->malloc_base = CONFIG_MALLOC_F_ADDR;
231 gd->malloc_limit = CONFIG_SYS_MALLOC_F_LEN;
235 if (CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)) {
236 ret = fdtdec_setup();
238 debug("fdtdec_setup() returned error %d\n", ret);
242 if (IS_ENABLED(CONFIG_SPL_DM)) {
243 /* With CONFIG_SPL_OF_PLATDATA, bring in all devices */
244 ret = dm_init_and_scan(!CONFIG_IS_ENABLED(OF_PLATDATA));
246 debug("dm_init_and_scan() returned error %d\n", ret);
254 int spl_early_init(void)
258 ret = spl_common_init(true);
261 gd->flags |= GD_FLG_SPL_EARLY_INIT;
269 bool setup_malloc = !(IS_ENABLED(CONFIG_SPL_STACK_R) &&
270 IS_ENABLED(CONFIG_SPL_SYS_MALLOC_SIMPLE));
272 if (!(gd->flags & GD_FLG_SPL_EARLY_INIT)) {
273 ret = spl_common_init(setup_malloc);
277 gd->flags |= GD_FLG_SPL_INIT;
282 #ifndef BOOT_DEVICE_NONE
283 #define BOOT_DEVICE_NONE 0xdeadbeef
286 __weak void board_boot_order(u32 *spl_boot_list)
288 spl_boot_list[0] = spl_boot_device();
291 static struct spl_image_loader *spl_ll_find_loader(uint boot_device)
293 struct spl_image_loader *drv =
294 ll_entry_start(struct spl_image_loader, spl_image_loader);
296 ll_entry_count(struct spl_image_loader, spl_image_loader);
297 struct spl_image_loader *entry;
299 for (entry = drv; entry != drv + n_ents; entry++) {
300 if (boot_device == entry->boot_device)
308 static int spl_load_image(struct spl_image_info *spl_image,
309 struct spl_image_loader *loader)
311 struct spl_boot_device bootdev;
313 bootdev.boot_device = loader->boot_device;
314 bootdev.boot_device_name = NULL;
316 return loader->load_image(spl_image, &bootdev);
320 * boot_from_devices() - Try loading an booting U-Boot from a list of devices
322 * @spl_image: Place to put the image details if successful
323 * @spl_boot_list: List of boot devices to try
324 * @count: Number of elements in spl_boot_list
325 * @return 0 if OK, -ve on error
327 static int boot_from_devices(struct spl_image_info *spl_image,
328 u32 spl_boot_list[], int count)
332 for (i = 0; i < count && spl_boot_list[i] != BOOT_DEVICE_NONE; i++) {
333 struct spl_image_loader *loader;
335 loader = spl_ll_find_loader(spl_boot_list[i]);
336 #if defined(CONFIG_SPL_SERIAL_SUPPORT) && defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
338 printf("Trying to boot from %s\n", loader->name);
340 puts("SPL: Unsupported Boot Device!\n");
342 if (loader && !spl_load_image(spl_image, loader))
349 void board_init_r(gd_t *dummy1, ulong dummy2)
351 u32 spl_boot_list[] = {
358 struct spl_image_info spl_image;
360 debug(">>spl:board_init_r()\n");
362 #ifdef CONFIG_SPL_OS_BOOT
363 dram_init_banksize();
366 #if defined(CONFIG_SYS_SPL_MALLOC_START)
367 mem_malloc_init(CONFIG_SYS_SPL_MALLOC_START,
368 CONFIG_SYS_SPL_MALLOC_SIZE);
369 gd->flags |= GD_FLG_FULL_MALLOC_INIT;
371 if (!(gd->flags & GD_FLG_SPL_INIT)) {
377 * timer_init() does not exist on PPC systems. The timer is initialized
378 * and enabled (decrementer) in interrupt_init() here.
383 #ifdef CONFIG_SPL_BOARD_INIT
387 memset(&spl_image, '\0', sizeof(spl_image));
388 #ifdef CONFIG_SYS_SPL_ARGS_ADDR
389 spl_image.arg = (void *)CONFIG_SYS_SPL_ARGS_ADDR;
391 board_boot_order(spl_boot_list);
393 if (boot_from_devices(&spl_image, spl_boot_list,
394 ARRAY_SIZE(spl_boot_list))) {
395 puts("SPL: failed to boot from all boot devices\n");
399 switch (spl_image.os) {
401 debug("Jumping to U-Boot\n");
403 #ifdef CONFIG_SPL_OS_BOOT
405 debug("Jumping to Linux\n");
407 spl_board_prepare_for_linux();
408 jump_to_image_linux(&spl_image);
411 debug("Unsupported OS image.. Jumping nevertheless..\n");
413 #if defined(CONFIG_SYS_MALLOC_F_LEN) && !defined(CONFIG_SYS_SPL_MALLOC_SIZE)
414 debug("SPL malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr,
415 gd->malloc_ptr / 1024);
418 if (IS_ENABLED(CONFIG_SPL_ATF_SUPPORT)) {
419 debug("loaded - jumping to U-Boot via ATF BL31.\n");
423 debug("loaded - jumping to U-Boot...\n");
424 spl_board_prepare_for_boot();
425 jump_to_image_no_args(&spl_image);
429 * This requires UART clocks to be enabled. In order for this to work the
430 * caller must ensure that the gd pointer is valid.
432 void preloader_console_init(void)
434 gd->baudrate = CONFIG_BAUDRATE;
436 serial_init(); /* serial communications setup */
438 gd->have_console = 1;
440 puts("\nU-Boot SPL " PLAIN_VERSION " (" U_BOOT_DATE " - " \
442 #ifdef CONFIG_SPL_DISPLAY_PRINT
448 * spl_relocate_stack_gd() - Relocate stack ready for board_init_r() execution
450 * Sometimes board_init_f() runs with a stack in SRAM but we want to use SDRAM
451 * for the main board_init_r() execution. This is typically because we need
452 * more stack space for things like the MMC sub-system.
454 * This function calculates the stack position, copies the global_data into
455 * place, sets the new gd (except for ARM, for which setting GD within a C
456 * function may not always work) and returns the new stack position. The
457 * caller is responsible for setting up the sp register and, in the case
458 * of ARM, setting up gd.
460 * All of this is done using the same layout and alignments as done in
461 * board_init_f_init_reserve() / board_init_f_alloc_reserve().
463 * @return new stack location, or 0 to use the same stack
465 ulong spl_relocate_stack_gd(void)
467 #ifdef CONFIG_SPL_STACK_R
469 ulong ptr = CONFIG_SPL_STACK_R_ADDR;
471 #ifdef CONFIG_SPL_SYS_MALLOC_SIMPLE
472 if (CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN) {
473 ptr -= CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN;
474 gd->malloc_base = ptr;
475 gd->malloc_limit = CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN;
479 /* Get stack position: use 8-byte alignment for ABI compliance */
480 ptr = CONFIG_SPL_STACK_R_ADDR - roundup(sizeof(gd_t),16);
481 new_gd = (gd_t *)ptr;
482 memcpy(new_gd, (void *)gd, sizeof(gd_t));
483 #if CONFIG_IS_ENABLED(DM)
484 dm_fixup_for_gd_move(new_gd);
486 #if !defined(CONFIG_ARM)