1 /*
2 * (C) Copyright 2010
3 * Texas Instruments, <www.ti.com>
4 *
5 * Aneesh V <aneesh@ti.com>
6 *
7 * SPDX-License-Identifier: GPL-2.0+
8 */
9
10 #include <common.h>
11 #include <dm.h>
12 #include <spl.h>
13 #include <asm/sections.h>
14 #include <asm/u-boot.h>
15 #include <nand.h>
16 #include <fat.h>
17 #include <version.h>
18 #include <image.h>
19 #include <malloc.h>
20 #include <mp_boot.h>
21 #include <dm/root.h>
22 #include <linux/compiler.h>
23 #include <fdt_support.h>
24
25 DECLARE_GLOBAL_DATA_PTR;
26
27 #ifndef CONFIG_SYS_UBOOT_START
28 #define CONFIG_SYS_UBOOT_START CONFIG_SYS_TEXT_BASE
29 #endif
30 #ifndef CONFIG_SYS_MONITOR_LEN
31 /* Unknown U-Boot size, let's assume it will not be more than 200 KB */
32 #define CONFIG_SYS_MONITOR_LEN (200 * 1024)
33 #endif
34
35 u32 *boot_params_ptr = NULL;
36
37 /* Define board data structure */
38 static bd_t bdata __attribute__ ((section(".data")));
39
40 /*
41 * Board-specific Platform code can reimplement show_boot_progress () if needed
42 */
show_boot_progress(int val)43 __weak void show_boot_progress(int val) {}
44
45 /*
46 * Default function to determine if u-boot or the OS should
47 * be started. This implementation always returns 1.
48 *
49 * Please implement your own board specific funcion to do this.
50 *
51 * RETURN
52 * 0 to not start u-boot
53 * positive if u-boot should start
54 */
55 #ifdef CONFIG_SPL_OS_BOOT
spl_start_uboot(void)56 __weak int spl_start_uboot(void)
57 {
58 puts("SPL: Please implement spl_start_uboot() for your board\n");
59 puts("SPL: Direct Linux boot not active!\n");
60 return 1;
61 }
62
63 /* weak default platform specific function to initialize
64 * dram banks
65 */
dram_init_banksize(void)66 __weak int dram_init_banksize(void)
67 {
68 return 0;
69 }
70
71 /*
72 * Weak default function for arch specific zImage check. Return zero
73 * and fill start and end address if image is recognized.
74 */
bootz_setup(ulong image,ulong * start,ulong * end)75 int __weak bootz_setup(ulong image, ulong *start, ulong *end)
76 {
77 return 1;
78 }
79 #endif
80
81 /* Weak default function for arch/board-specific fixups to the spl_image_info */
spl_perform_fixups(struct spl_image_info * spl_image)82 void __weak spl_perform_fixups(struct spl_image_info *spl_image)
83 {
84 }
85
86 /* Get the next stage process */
spl_next_stage(struct spl_image_info * spl)87 __weak void spl_next_stage(struct spl_image_info *spl)
88 {
89 spl->next_stage = SPL_NEXT_STAGE_UBOOT;
90 }
91
92 /* Weak default function for arch/board-specific preppare before jumping */
spl_board_prepare_for_jump(struct spl_image_info * spl_image)93 int __weak spl_board_prepare_for_jump(struct spl_image_info *spl_image)
94 {
95 return 0;
96 }
97
98 /* Fix storages, like iomux */
spl_board_storages_fixup(struct spl_image_loader * loader)99 __weak void spl_board_storages_fixup(struct spl_image_loader *loader)
100 {
101 /* Nothing to do! */
102 }
103
spl_fixup_fdt(void)104 void spl_fixup_fdt(void)
105 {
106 #if defined(CONFIG_SPL_OF_LIBFDT) && defined(CONFIG_SYS_SPL_ARGS_ADDR)
107 void *fdt_blob = (void *)CONFIG_SYS_SPL_ARGS_ADDR;
108 int err;
109
110 err = fdt_check_header(fdt_blob);
111 if (err < 0) {
112 printf("fdt_root: %s\n", fdt_strerror(err));
113 return;
114 }
115
116 /* fixup the memory dt node */
117 err = fdt_shrink_to_minimum(fdt_blob, 0);
118 if (err == 0) {
119 printf("spl: fdt_shrink_to_minimum err - %d\n", err);
120 return;
121 }
122
123 err = arch_fixup_fdt(fdt_blob);
124 if (err) {
125 printf("spl: arch_fixup_fdt err - %d\n", err);
126 return;
127 }
128 #endif
129 }
130
131 /*
132 * Weak default function for board specific cleanup/preparation before
133 * Linux boot. Some boards/platforms might not need it, so just provide
134 * an empty stub here.
135 */
spl_board_prepare_for_linux(void)136 __weak void spl_board_prepare_for_linux(void)
137 {
138 /* Nothing to do! */
139 }
140
spl_board_prepare_for_boot(void)141 __weak void spl_board_prepare_for_boot(void)
142 {
143 /* Nothing to do! */
144 }
145
spl_set_header_raw_uboot(struct spl_image_info * spl_image)146 void spl_set_header_raw_uboot(struct spl_image_info *spl_image)
147 {
148 spl_image->size = CONFIG_SYS_MONITOR_LEN;
149 spl_image->entry_point = CONFIG_SYS_UBOOT_START;
150 spl_image->load_addr = CONFIG_SYS_TEXT_BASE;
151 spl_image->os = IH_OS_U_BOOT;
152 spl_image->name = "U-Boot";
153 }
154
spl_parse_image_header(struct spl_image_info * spl_image,const struct image_header * header)155 int spl_parse_image_header(struct spl_image_info *spl_image,
156 const struct image_header *header)
157 {
158 if (image_get_magic(header) == IH_MAGIC) {
159 #ifdef CONFIG_SPL_LEGACY_IMAGE_SUPPORT
160 u32 header_size = sizeof(struct image_header);
161
162 if (spl_image->flags & SPL_COPY_PAYLOAD_ONLY) {
163 /*
164 * On some system (e.g. powerpc), the load-address and
165 * entry-point is located at address 0. We can't load
166 * to 0-0x40. So skip header in this case.
167 */
168 spl_image->load_addr = image_get_load(header);
169 spl_image->entry_point = image_get_ep(header);
170 spl_image->size = image_get_data_size(header);
171 } else {
172 spl_image->entry_point = image_get_load(header);
173 /* Load including the header */
174 spl_image->load_addr = spl_image->entry_point -
175 header_size;
176 spl_image->size = image_get_data_size(header) +
177 header_size;
178 }
179 spl_image->os = image_get_os(header);
180 spl_image->name = image_get_name(header);
181 debug("spl: payload image: %.*s load addr: 0x%lx size: %d\n",
182 IH_NMLEN, spl_image->name,
183 spl_image->load_addr, spl_image->size);
184 #else
185 /* LEGACY image not supported */
186 debug("Legacy boot image support not enabled, proceeding to other boot methods\n");
187 return -EINVAL;
188 #endif
189 } else {
190 #ifdef CONFIG_SPL_PANIC_ON_RAW_IMAGE
191 /*
192 * CONFIG_SPL_PANIC_ON_RAW_IMAGE is defined when the
193 * code which loads images in SPL cannot guarantee that
194 * absolutely all read errors will be reported.
195 * An example is the LPC32XX MLC NAND driver, which
196 * will consider that a completely unreadable NAND block
197 * is bad, and thus should be skipped silently.
198 */
199 panic("** no mkimage signature but raw image not supported");
200 #endif
201
202 #ifdef CONFIG_SPL_OS_BOOT
203 ulong start, end;
204
205 if (!bootz_setup((ulong)header, &start, &end)) {
206 spl_image->name = "Linux";
207 spl_image->os = IH_OS_LINUX;
208 spl_image->load_addr = CONFIG_SYS_LOAD_ADDR;
209 spl_image->entry_point = CONFIG_SYS_LOAD_ADDR;
210 spl_image->size = end - start;
211 debug("spl: payload zImage, load addr: 0x%lx size: %d\n",
212 spl_image->load_addr, spl_image->size);
213 return 0;
214 }
215 #endif
216
217 #ifdef CONFIG_SPL_RAW_IMAGE_SUPPORT
218 /* Signature not found - assume u-boot.bin */
219 debug("mkimage signature not found - ih_magic = %x\n",
220 header->ih_magic);
221 spl_set_header_raw_uboot(spl_image);
222 #else
223 /* RAW image not supported, proceed to other boot methods. */
224 debug("Raw boot image support not enabled, proceeding to other boot methods\n");
225 return -EINVAL;
226 #endif
227 }
228
229 return 0;
230 }
231
jump_to_image_no_args(struct spl_image_info * spl_image)232 __weak void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
233 {
234 typedef void __noreturn (*image_entry_noargs_t)(void);
235
236 image_entry_noargs_t image_entry =
237 (image_entry_noargs_t)spl_image->entry_point;
238
239 debug("image entry point: 0x%lX\n", spl_image->entry_point);
240 image_entry();
241 }
242
243 /*
244 * 64-bit: No special operation.
245 *
246 * 32-bit: Initial gd->bd->bi_dram[] to active dcache attr of memory.
247 * Assuming 256MB is enough for SPL(MMU still maps 4GB size).
248 */
249 #ifndef CONFIG_SPL_SYS_DCACHE_OFF
spl_dcache_enable(void)250 static int spl_dcache_enable(void)
251 {
252 bool free_bd = false;
253
254 #ifndef CONFIG_ARM64
255 if (!gd->bd) {
256 gd->bd = calloc(1, sizeof(bd_t));
257 if (!gd->bd) {
258 debug("spl: no bd_t memory\n");
259 return -ENOMEM;
260 }
261 gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
262 gd->bd->bi_dram[0].size = SZ_256M;
263 free_bd = true;
264 }
265 #endif
266 /* TLB memory should be SZ_16K base align and 4KB end align */
267 gd->arch.tlb_size = PGTABLE_SIZE;
268 gd->arch.tlb_addr = (ulong)memalign(SZ_16K, ALIGN(PGTABLE_SIZE, SZ_4K));
269 if (!gd->arch.tlb_addr) {
270 debug("spl: no TLB memory\n");
271 return -ENOMEM;
272 }
273
274 dcache_enable();
275 if (free_bd)
276 free(gd->bd);
277
278 return 0;
279 }
280 #endif
281
spl_common_init(bool setup_malloc)282 static int spl_common_init(bool setup_malloc)
283 {
284 int ret;
285
286 debug("spl_early_init()\n");
287
288 #if CONFIG_VAL(SYS_MALLOC_F_LEN)
289 if (setup_malloc) {
290 #ifdef CONFIG_MALLOC_F_ADDR
291 gd->malloc_base = CONFIG_MALLOC_F_ADDR;
292 #endif
293 gd->malloc_limit = CONFIG_VAL(SYS_MALLOC_F_LEN);
294 gd->malloc_ptr = 0;
295 }
296 #endif
297
298 /*
299 * setup D-cache as early as possible after malloc setup
300 * I-cache has been setup at early assembly code by default.
301 */
302 #ifndef CONFIG_SPL_SYS_DCACHE_OFF
303 ret = spl_dcache_enable();
304 if (ret) {
305 debug("spl_dcache_enable() return error %d\n", ret);
306 return ret;
307 }
308 #endif
309 ret = bootstage_init(true);
310 if (ret) {
311 debug("%s: Failed to set up bootstage: ret=%d\n", __func__,
312 ret);
313 return ret;
314 }
315 bootstage_mark_name(BOOTSTAGE_ID_START_SPL, "spl");
316 if (CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)) {
317 ret = fdtdec_setup();
318 if (ret) {
319 debug("fdtdec_setup() returned error %d\n", ret);
320 return ret;
321 }
322 }
323 if (CONFIG_IS_ENABLED(DM)) {
324 bootstage_start(BOOTSTATE_ID_ACCUM_DM_SPL, "dm_spl");
325 /* With CONFIG_SPL_OF_PLATDATA, bring in all devices */
326 ret = dm_init_and_scan(!CONFIG_IS_ENABLED(OF_PLATDATA));
327 bootstage_accum(BOOTSTATE_ID_ACCUM_DM_SPL);
328 if (ret) {
329 debug("dm_init_and_scan() returned error %d\n", ret);
330 return ret;
331 }
332 }
333
334 return 0;
335 }
336
337 #if !defined(CONFIG_SPL_SKIP_RELOCATE) && !defined(CONFIG_TPL_BUILD)
spl_setup_relocate(void)338 static void spl_setup_relocate(void)
339 {
340 gd->relocaddr = CONFIG_SPL_RELOC_TEXT_BASE;
341 gd->new_gd = (gd_t *)gd;
342 gd->start_addr_sp = gd->relocaddr;
343 gd->fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
344
345 gd->start_addr_sp -= gd->fdt_size;
346 gd->new_fdt = (void *)gd->start_addr_sp;
347 memcpy(gd->new_fdt, gd->fdt_blob, gd->fdt_size);
348 gd->fdt_blob = gd->new_fdt;
349
350 gd->reloc_off = gd->relocaddr - (unsigned long)__image_copy_start;
351 }
352 #else
spl_setup_relocate(void)353 static void spl_setup_relocate(void)
354 {
355
356 }
357 #endif
358
spl_set_bd(void)359 void spl_set_bd(void)
360 {
361 if (!gd->bd)
362 gd->bd = &bdata;
363 }
364
spl_early_init(void)365 int spl_early_init(void)
366 {
367 int ret;
368
369 ret = spl_common_init(true);
370 if (ret)
371 return ret;
372 gd->flags |= GD_FLG_SPL_EARLY_INIT;
373
374 spl_setup_relocate();
375
376 return 0;
377 }
378
spl_init(void)379 int spl_init(void)
380 {
381 int ret;
382 bool setup_malloc = !(IS_ENABLED(CONFIG_SPL_STACK_R) &&
383 IS_ENABLED(CONFIG_SPL_SYS_MALLOC_SIMPLE));
384
385 if (!(gd->flags & GD_FLG_SPL_EARLY_INIT)) {
386 ret = spl_common_init(setup_malloc);
387 if (ret)
388 return ret;
389 }
390 gd->flags |= GD_FLG_SPL_INIT;
391
392 return 0;
393 }
394
395 #ifndef BOOT_DEVICE_NONE
396 #define BOOT_DEVICE_NONE 0xdeadbeef
397 #endif
398
board_boot_order(u32 * spl_boot_list)399 __weak void board_boot_order(u32 *spl_boot_list)
400 {
401 spl_boot_list[0] = spl_boot_device();
402 }
403
spl_ll_find_loader(uint boot_device)404 static struct spl_image_loader *spl_ll_find_loader(uint boot_device)
405 {
406 struct spl_image_loader *drv =
407 ll_entry_start(struct spl_image_loader, spl_image_loader);
408 const int n_ents =
409 ll_entry_count(struct spl_image_loader, spl_image_loader);
410 struct spl_image_loader *entry;
411
412 for (entry = drv; entry != drv + n_ents; entry++) {
413 if (boot_device == entry->boot_device)
414 return entry;
415 }
416
417 /* Not found */
418 return NULL;
419 }
420
spl_load_image(struct spl_image_info * spl_image,struct spl_image_loader * loader)421 static int spl_load_image(struct spl_image_info *spl_image,
422 struct spl_image_loader *loader)
423 {
424 struct spl_boot_device bootdev;
425
426 bootdev.boot_device = loader->boot_device;
427 bootdev.boot_device_name = NULL;
428
429 return loader->load_image(spl_image, &bootdev);
430 }
431
432 /**
433 * boot_from_devices() - Try loading an booting U-Boot from a list of devices
434 *
435 * @spl_image: Place to put the image details if successful
436 * @spl_boot_list: List of boot devices to try
437 * @count: Number of elements in spl_boot_list
438 * @return 0 if OK, -ve on error
439 */
boot_from_devices(struct spl_image_info * spl_image,u32 spl_boot_list[],int count)440 static int boot_from_devices(struct spl_image_info *spl_image,
441 u32 spl_boot_list[], int count)
442 {
443 int i;
444
445 for (i = 0; i < count && spl_boot_list[i] != BOOT_DEVICE_NONE; i++) {
446 struct spl_image_loader *loader;
447
448 loader = spl_ll_find_loader(spl_boot_list[i]);
449 #if defined(CONFIG_SPL_SERIAL_SUPPORT) && defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
450 if (loader)
451 printf("Trying to boot from %s\n", loader->name);
452 else
453 puts("SPL: Unsupported Boot Device!\n");
454 #endif
455 if (loader && !spl_load_image(spl_image, loader)) {
456 spl_image->boot_device = spl_boot_list[i];
457 return 0;
458 }
459
460 spl_board_storages_fixup(loader);
461 }
462
463 return -ENODEV;
464 }
465
466 #if defined(CONFIG_DM) && !defined(CONFIG_SPL_SKIP_RELOCATE) && !defined(CONFIG_TPL_BUILD)
spl_initr_dm(void)467 static int spl_initr_dm(void)
468 {
469 int ret;
470
471 /* Save the pre-reloc driver model and start a new one */
472 gd->dm_root_f = gd->dm_root;
473 gd->dm_root = NULL;
474 bootstage_start(BOOTSTATE_ID_ACCUM_DM_R, "dm_r");
475 ret = dm_init_and_scan(false);
476 bootstage_accum(BOOTSTATE_ID_ACCUM_DM_R);
477 if (ret)
478 return ret;
479
480 #if defined(CONFIG_TIMER)
481 gd->timer = NULL;
482 #endif
483 serial_init();
484
485 return 0;
486 }
487 #else
spl_initr_dm(void)488 static int spl_initr_dm(void)
489 {
490 return 0;
491 }
492 #endif
493
494 #if defined(CONFIG_SPL_KERNEL_BOOT) && !defined(CONFIG_ARM64)
boot_jump_linux(struct spl_image_info * spl_image)495 static void boot_jump_linux(struct spl_image_info *spl_image)
496 {
497 void (*kernel_entry)(int zero, int arch, ulong params);
498
499 printf("Jumping to %s(0x%08lx)\n", "Kernel",
500 (ulong)spl_image->entry_point_os);
501 spl_cleanup_before_jump(spl_image);
502 kernel_entry = (void (*)(int, int, ulong))spl_image->entry_point_os;
503 kernel_entry(0, 0, (ulong)spl_image->fdt_addr);
504 }
505 #endif
506
board_init_r(gd_t * dummy1,ulong dummy2)507 void board_init_r(gd_t *dummy1, ulong dummy2)
508 {
509 u32 spl_boot_list[] = {
510 BOOT_DEVICE_NONE,
511 BOOT_DEVICE_NONE,
512 BOOT_DEVICE_NONE,
513 BOOT_DEVICE_NONE,
514 BOOT_DEVICE_NONE,
515 };
516 struct spl_image_info spl_image;
517
518 debug(">>spl:board_init_r()\n");
519
520 spl_initr_dm();
521
522 spl_set_bd();
523
524 #ifdef CONFIG_SPL_OS_BOOT
525 dram_init_banksize();
526 #endif
527
528 #if defined(CONFIG_SYS_SPL_MALLOC_START)
529 mem_malloc_init(CONFIG_SYS_SPL_MALLOC_START,
530 CONFIG_SYS_SPL_MALLOC_SIZE);
531 gd->flags |= GD_FLG_FULL_MALLOC_INIT;
532 #endif
533 if (!(gd->flags & GD_FLG_SPL_INIT)) {
534 if (spl_init())
535 hang();
536 }
537 #if !defined(CONFIG_PPC) && !defined(CONFIG_ARCH_MX6)
538 /*
539 * timer_init() does not exist on PPC systems. The timer is initialized
540 * and enabled (decrementer) in interrupt_init() here.
541 */
542 timer_init();
543 #endif
544
545 #if CONFIG_IS_ENABLED(BOARD_INIT)
546 spl_board_init();
547 #endif
548
549 memset(&spl_image, '\0', sizeof(spl_image));
550
551 #ifdef CONFIG_MP_BOOT
552 mpb_init_x(0);
553 #endif
554
555 #if CONFIG_IS_ENABLED(ATF)
556 /*
557 * Bl32 ep is optional, initial it as an invalid value.
558 * BL33 ep is mandatory, but initial it as a default value is better.
559 */
560 spl_image.entry_point_bl32 = -1;
561 spl_image.entry_point_bl33 = CONFIG_SYS_TEXT_BASE;
562 #endif
563
564 #if CONFIG_IS_ENABLED(OPTEE)
565 /* default address */
566 spl_image.entry_point_os = CONFIG_SYS_TEXT_BASE;
567 #endif
568
569 #ifdef CONFIG_SYS_SPL_ARGS_ADDR
570 spl_image.arg = (void *)CONFIG_SYS_SPL_ARGS_ADDR;
571 #endif
572 spl_image.boot_device = BOOT_DEVICE_NONE;
573 board_boot_order(spl_boot_list);
574 spl_next_stage(&spl_image);
575 if (boot_from_devices(&spl_image, spl_boot_list,
576 ARRAY_SIZE(spl_boot_list))) {
577 puts("SPL: failed to boot from all boot devices\n");
578 hang();
579 }
580
581 spl_perform_fixups(&spl_image);
582
583 #ifdef CONFIG_MP_BOOT
584 mpb_init_x(2);
585 #endif
586
587 #ifdef CONFIG_CPU_V7M
588 spl_image.entry_point |= 0x1;
589 #endif
590 switch (spl_image.os) {
591 case IH_OS_U_BOOT:
592 debug("Jumping to U-Boot\n");
593 spl_cleanup_before_jump(&spl_image);
594 break;
595 #if CONFIG_IS_ENABLED(ATF)
596 case IH_OS_ARM_TRUSTED_FIRMWARE:
597 printf("Jumping to %s(0x%08lx) via ARM Trusted Firmware(0x%08lx)\n",
598 spl_image.next_stage == SPL_NEXT_STAGE_UBOOT ? "U-Boot" :
599 (spl_image.next_stage == SPL_NEXT_STAGE_KERNEL ? "Kernel" : "Unknown"),
600 (ulong)spl_image.entry_point_bl33,
601 (ulong)spl_image.entry_point);
602 spl_invoke_atf(&spl_image);
603 break;
604 #endif
605 #if CONFIG_IS_ENABLED(OPTEE)
606 case IH_OS_OP_TEE:
607 printf("Jumping to %s(0x%08lx) via OP-TEE(0x%08lx)\n",
608 spl_image.next_stage == SPL_NEXT_STAGE_UBOOT ? "U-Boot" :
609 (spl_image.next_stage == SPL_NEXT_STAGE_KERNEL ? "Kernel" : "Unknown"),
610 (ulong)spl_image.entry_point_os,
611 (ulong)spl_image.entry_point);
612 spl_cleanup_before_jump(&spl_image);
613 spl_optee_entry(NULL, (void *)spl_image.entry_point_os,
614 (void *)spl_image.fdt_addr,
615 (void *)spl_image.entry_point);
616 break;
617 #endif
618 case IH_OS_LINUX:
619 #ifdef CONFIG_SPL_OS_BOOT
620 debug("Jumping to Linux\n");
621 spl_fixup_fdt();
622 spl_board_prepare_for_linux();
623 jump_to_image_linux(&spl_image);
624 #elif defined(CONFIG_SPL_KERNEL_BOOT) && !defined(CONFIG_ARM64)
625 boot_jump_linux(&spl_image);
626 #endif
627 break;
628 default:
629 debug("Unsupported OS image.. Jumping nevertheless..\n");
630 }
631 #if CONFIG_VAL(SYS_MALLOC_F_LEN) && !defined(CONFIG_SYS_SPL_MALLOC_SIZE)
632 debug("SPL malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr,
633 gd->malloc_ptr / 1024);
634 #endif
635
636 debug("loaded - jumping to U-Boot...\n");
637 #ifdef CONFIG_BOOTSTAGE_STASH
638 int ret;
639
640 bootstage_mark_name(BOOTSTAGE_ID_END_SPL, "end_spl");
641 ret = bootstage_stash((void *)CONFIG_BOOTSTAGE_STASH_ADDR,
642 CONFIG_BOOTSTAGE_STASH_SIZE);
643 if (ret)
644 debug("Failed to stash bootstage: err=%d\n", ret);
645 #endif
646
647 printf("Jumping to U-Boot(0x%08lx)\n", spl_image.entry_point);
648 spl_board_prepare_for_boot();
649 jump_to_image_no_args(&spl_image);
650 }
651
652 /*
653 * This requires UART clocks to be enabled. In order for this to work the
654 * caller must ensure that the gd pointer is valid.
655 */
preloader_console_init(void)656 void preloader_console_init(void)
657 {
658 gd->baudrate = CONFIG_BAUDRATE;
659
660 serial_init(); /* serial communications setup */
661
662 gd->have_console = 1;
663
664 puts("\nU-Boot SPL " PLAIN_VERSION " (" U_BOOT_DATE " - " \
665 U_BOOT_TIME ")\n");
666 #ifdef CONFIG_SPL_DISPLAY_PRINT
667 spl_display_print();
668 #endif
669 }
670
671 /**
672 * spl_relocate_stack_gd() - Relocate stack ready for board_init_r() execution
673 *
674 * Sometimes board_init_f() runs with a stack in SRAM but we want to use SDRAM
675 * for the main board_init_r() execution. This is typically because we need
676 * more stack space for things like the MMC sub-system.
677 *
678 * This function calculates the stack position, copies the global_data into
679 * place, sets the new gd (except for ARM, for which setting GD within a C
680 * function may not always work) and returns the new stack position. The
681 * caller is responsible for setting up the sp register and, in the case
682 * of ARM, setting up gd.
683 *
684 * All of this is done using the same layout and alignments as done in
685 * board_init_f_init_reserve() / board_init_f_alloc_reserve().
686 *
687 * @return new stack location, or 0 to use the same stack
688 */
spl_relocate_stack_gd(void)689 ulong spl_relocate_stack_gd(void)
690 {
691 #ifdef CONFIG_SPL_STACK_R
692 gd_t *new_gd;
693 ulong ptr = CONFIG_SPL_STACK_R_ADDR;
694
695 #if defined(CONFIG_SPL_SYS_MALLOC_SIMPLE) && CONFIG_VAL(SYS_MALLOC_F_LEN)
696 if (CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN) {
697 ptr -= CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN;
698 gd->malloc_base = ptr;
699 gd->malloc_limit = CONFIG_SPL_STACK_R_MALLOC_SIMPLE_LEN;
700 gd->malloc_ptr = 0;
701 }
702 #endif
703 /* Get stack position: use 8-byte alignment for ABI compliance */
704 ptr = CONFIG_SPL_STACK_R_ADDR - roundup(sizeof(gd_t),16);
705 new_gd = (gd_t *)ptr;
706 memcpy(new_gd, (void *)gd, sizeof(gd_t));
707 #if CONFIG_IS_ENABLED(DM)
708 dm_fixup_for_gd_move(new_gd);
709 #endif
710 #if !defined(CONFIG_ARM)
711 gd = new_gd;
712 #endif
713 return ptr;
714 #else
715 return 0;
716 #endif
717 }
718
719 /* cleanup before jump to next stage */
spl_cleanup_before_jump(struct spl_image_info * spl_image)720 void spl_cleanup_before_jump(struct spl_image_info *spl_image)
721 {
722 ulong us, tt_us;
723
724 spl_board_prepare_for_jump(spl_image);
725
726 disable_interrupts();
727
728 #ifdef CONFIG_ARM64
729 disable_serror();
730 #else
731 disable_async_abort();
732 #endif
733 /*
734 * Turn off I-cache and invalidate it
735 */
736 icache_disable();
737 invalidate_icache_all();
738
739 /*
740 * Turn off D-cache
741 * dcache_disable() in turn flushes the d-cache and disables MMU
742 */
743 dcache_disable();
744 invalidate_dcache_all();
745
746 dsb();
747 isb();
748
749 us = (get_ticks() - gd->sys_start_tick) / 24UL;
750 tt_us = get_ticks() / (COUNTER_FREQUENCY / 1000000);
751 printf("Total: %ld.%ld/%ld.%ld ms\n\n", us / 1000, us % 1000, tt_us / 1000, tt_us % 1000);
752 }
753