1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (c) 2011 The Chromium OS Authors.
4 * (C) Copyright 2002-2006
8 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
14 #include <bootstage.h>
15 #include <clock_legacy.h>
20 #include <display_options.h>
23 #include <env_internal.h>
39 #include <status_led.h>
46 #include <asm/cache.h>
47 #include <asm/global_data.h>
49 #include <asm/sections.h>
51 #include <linux/errno.h>
52 #include <linux/log2.h>
54 DECLARE_GLOBAL_DATA_PTR;
58 * refactored to a single function, something like:
60 * void led_set_state(enum led_colour_t colour, int on);
62 /************************************************************************
63 * Coloured LED functionality
64 ************************************************************************
65 * May be supplied by boards if desired
67 __weak void coloured_LED_init(void) {}
68 __weak void red_led_on(void) {}
69 __weak void red_led_off(void) {}
70 __weak void green_led_on(void) {}
71 __weak void green_led_off(void) {}
72 __weak void yellow_led_on(void) {}
73 __weak void yellow_led_off(void) {}
74 __weak void blue_led_on(void) {}
75 __weak void blue_led_off(void) {}
78 * Why is gd allocated a register? Prior to reloc it might be better to
79 * just pass it around to each function in this file?
81 * After reloc one could argue that it is hardly used and doesn't need
82 * to be in a register. Or if it is it should perhaps hold pointers to all
83 * global data for all modules, so that post-reloc we can avoid the massive
84 * literal pool we get on ARM. Or perhaps just encourage each module to use
88 #if defined(CONFIG_WATCHDOG) || defined(CONFIG_HW_WATCHDOG)
89 static int init_func_watchdog_init(void)
91 # if defined(CONFIG_HW_WATCHDOG) && \
92 (defined(CONFIG_M68K) || defined(CONFIG_MICROBLAZE) || \
93 defined(CONFIG_SH) || \
94 defined(CONFIG_DESIGNWARE_WATCHDOG) || \
95 defined(CONFIG_IMX_WATCHDOG))
97 puts(" Watchdog enabled\n");
104 int init_func_watchdog_reset(void)
110 #endif /* CONFIG_WATCHDOG */
112 __weak void board_add_ram_info(int use_default)
114 /* please define platform specific board_add_ram_info() */
117 static int init_baud_rate(void)
119 gd->baudrate = env_get_ulong("baudrate", 10, CONFIG_BAUDRATE);
123 static int display_text_info(void)
125 #if !defined(CONFIG_SANDBOX) && !defined(CONFIG_EFI_APP)
126 ulong bss_start, bss_end, text_base;
128 bss_start = (ulong)__bss_start;
129 bss_end = (ulong)__bss_end;
131 #ifdef CONFIG_TEXT_BASE
132 text_base = CONFIG_TEXT_BASE;
134 text_base = CONFIG_SYS_MONITOR_BASE;
137 debug("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
138 text_base, bss_start, bss_end);
144 #ifdef CONFIG_SYSRESET
145 static int print_resetinfo(void)
149 bool status_printed = false;
153 * Not all boards have sysreset drivers available during early
154 * boot, so don't fail if one can't be found.
156 for (ret = uclass_first_device_check(UCLASS_SYSRESET, &dev); dev;
157 ret = uclass_next_device_check(&dev)) {
159 debug("%s: %s sysreset device (error: %d)\n",
160 __func__, dev->name, ret);
164 if (!sysreset_get_status(dev, status, sizeof(status))) {
165 printf("%s%s", status_printed ? " " : "", status);
166 status_printed = true;
176 #if defined(CONFIG_DISPLAY_CPUINFO) && CONFIG_IS_ENABLED(CPU)
177 static int print_cpuinfo(void)
183 dev = cpu_get_current_dev();
185 debug("%s: Could not get CPU device\n",
190 ret = cpu_get_desc(dev, desc, sizeof(desc));
192 debug("%s: Could not get CPU description (err = %d)\n",
197 printf("CPU: %s\n", desc);
203 static int announce_dram_init(void)
210 * From input size calculate its nearest rounded unit scale (multiply of 2^10)
211 * and value in calculated unit scale multiplied by 10 (as fractional fixed
212 * point number with one decimal digit), which is human natural format,
213 * same what uses print_size() function for displaying. Mathematically it is:
214 * round_nearest(val * 2^scale) = size * 10; where: 10 <= val < 10240.
216 * For example for size=87654321 we calculate scale=20 and val=836 which means
217 * that input has natural human format 83.6 M (mega = 2^20).
219 #define compute_size_scale_val(size, scale, val) do { \
220 scale = ilog2(size) / 10 * 10; \
221 val = (10 * size + ((1ULL << scale) >> 1)) >> scale; \
222 if (val == 10240) { val = 10; scale += 10; } \
226 * Check if the sizes in their natural units written in decimal format with
227 * one fraction number are same.
229 static int sizes_near(unsigned long long size1, unsigned long long size2)
231 unsigned int size1_scale, size1_val, size2_scale, size2_val;
233 compute_size_scale_val(size1, size1_scale, size1_val);
234 compute_size_scale_val(size2, size2_scale, size2_val);
236 return size1_scale == size2_scale && size1_val == size2_val;
239 static int show_dram_config(void)
241 unsigned long long size;
244 debug("\nRAM Configuration:\n");
245 for (i = size = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
246 size += gd->bd->bi_dram[i].size;
247 debug("Bank #%d: %llx ", i,
248 (unsigned long long)(gd->bd->bi_dram[i].start));
250 print_size(gd->bd->bi_dram[i].size, "\n");
255 print_size(gd->ram_size, "");
256 if (!sizes_near(gd->ram_size, size)) {
257 printf(" (effective ");
258 print_size(size, ")");
260 board_add_ram_info(0);
266 __weak int dram_init_banksize(void)
268 gd->bd->bi_dram[0].start = gd->ram_base;
269 gd->bd->bi_dram[0].size = get_effective_memsize();
274 #if CONFIG_IS_ENABLED(SYS_I2C_LEGACY)
275 static int init_func_i2c(void)
284 static int setup_mon_len(void)
286 #if defined(CONFIG_ARCH_NEXELL)
287 gd->mon_len = (ulong)__bss_end - (ulong)__image_copy_start;
288 #elif defined(__ARM__) || defined(__MICROBLAZE__)
289 gd->mon_len = (ulong)__bss_end - (ulong)_start;
290 #elif defined(CONFIG_SANDBOX) && !defined(__riscv)
291 gd->mon_len = (ulong)_end - (ulong)_init;
292 #elif defined(CONFIG_SANDBOX)
293 /* gcc does not provide _init in crti.o on RISC-V */
295 #elif defined(CONFIG_EFI_APP)
296 gd->mon_len = (ulong)_end - (ulong)_init;
297 #elif defined(CONFIG_NIOS2) || defined(CONFIG_XTENSA)
298 gd->mon_len = CONFIG_SYS_MONITOR_LEN;
299 #elif defined(CONFIG_SH) || defined(CONFIG_RISCV)
300 gd->mon_len = (ulong)(__bss_end) - (ulong)(_start);
301 #elif defined(CONFIG_SYS_MONITOR_BASE)
302 /* TODO: use (ulong)__bss_end - (ulong)__text_start; ? */
303 gd->mon_len = (ulong)__bss_end - CONFIG_SYS_MONITOR_BASE;
308 __weak int arch_cpu_init(void)
313 __weak int mach_cpu_init(void)
318 /* Get the top of usable RAM */
319 __weak phys_addr_t board_get_usable_ram_top(phys_size_t total_size)
321 #if defined(CFG_SYS_SDRAM_BASE) && CFG_SYS_SDRAM_BASE > 0
323 * Detect whether we have so much RAM that it goes past the end of our
324 * 32-bit address space. If so, clip the usable RAM so it doesn't.
326 if (gd->ram_top < CFG_SYS_SDRAM_BASE)
328 * Will wrap back to top of 32-bit space when reservations
336 __weak int arch_setup_dest_addr(void)
341 static int setup_dest_addr(void)
343 debug("Monitor len: %08x\n", gd->mon_len);
345 * Ram is setup, size stored in gd !!
347 debug("Ram size: %08llX\n", (unsigned long long)gd->ram_size);
348 #if CONFIG_VAL(SYS_MEM_TOP_HIDE)
350 * Subtract specified amount of memory to hide so that it won't
351 * get "touched" at all by U-Boot. By fixing up gd->ram_size
352 * the Linux kernel should now get passed the now "corrected"
353 * memory size and won't touch it either. This should work
354 * for arch/ppc and arch/powerpc. Only Linux board ports in
355 * arch/powerpc with bootwrapper support, that recalculate the
356 * memory size from the SDRAM controller setup will have to
359 gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
361 #ifdef CFG_SYS_SDRAM_BASE
362 gd->ram_base = CFG_SYS_SDRAM_BASE;
364 gd->ram_top = gd->ram_base + get_effective_memsize();
365 gd->ram_top = board_get_usable_ram_top(gd->mon_len);
366 gd->relocaddr = gd->ram_top;
367 debug("Ram top: %08llX\n", (unsigned long long)gd->ram_top);
369 return arch_setup_dest_addr();
373 /* reserve protected RAM */
374 static int reserve_pram(void)
378 reg = env_get_ulong("pram", 10, CFG_PRAM);
379 gd->relocaddr -= (reg << 10); /* size is in kB */
380 debug("Reserving %ldk for protected RAM at %08lx\n", reg,
384 #endif /* CFG_PRAM */
386 /* Round memory pointer down to next 4 kB limit */
387 static int reserve_round_4k(void)
389 gd->relocaddr &= ~(4096 - 1);
393 __weak int arch_reserve_mmu(void)
398 static int reserve_video_from_videoblob(void)
400 if (IS_ENABLED(CONFIG_SPL_VIDEO_HANDOFF) && xpl_phase() > PHASE_SPL) {
401 struct video_handoff *ho;
404 ho = bloblist_find(BLOBLISTT_U_BOOT_VIDEO, sizeof(*ho));
406 return log_msg_ret("Missing video bloblist", -ENOENT);
408 ret = video_reserve_from_bloblist(ho);
410 return log_msg_ret("Invalid Video handoff info", ret);
412 /* Sanity check fb from blob is before current relocaddr */
413 if (likely(gd->relocaddr > (unsigned long)ho->fb))
414 gd->relocaddr = ho->fb;
421 * Check if any bloblist received specifying reserved areas from previous stage and adjust
422 * gd->relocaddr accordingly, so that we start reserving after pre-reserved areas
423 * from previous stage.
426 * IT is recommended that all bloblists from previous stage are reserved from ram_top
427 * as next stage will simply start reserving further regions after them.
429 static int setup_relocaddr_from_bloblist(void)
431 reserve_video_from_videoblob();
436 static int reserve_video(void)
438 if (CONFIG_IS_ENABLED(VIDEO)) {
442 addr = gd->relocaddr;
443 ret = video_reserve(&addr);
446 debug("Reserving %luk for video at: %08lx\n",
447 ((unsigned long)gd->relocaddr - addr) >> 10, addr);
448 gd->relocaddr = addr;
454 static int reserve_trace(void)
457 gd->relocaddr -= CONFIG_TRACE_BUFFER_SIZE;
458 gd->trace_buff = map_sysmem(gd->relocaddr, CONFIG_TRACE_BUFFER_SIZE);
459 debug("Reserving %luk for trace data at: %08lx\n",
460 (unsigned long)CONFIG_TRACE_BUFFER_SIZE >> 10, gd->relocaddr);
466 static int reserve_uboot(void)
468 if (!(gd->flags & GD_FLG_SKIP_RELOC)) {
470 * reserve memory for U-Boot code, data & bss
471 * round down to next 4 kB limit
473 gd->relocaddr -= gd->mon_len;
474 gd->relocaddr &= ~(4096 - 1);
475 #if defined(CONFIG_E500) || defined(CONFIG_MIPS)
476 /* round down to next 64 kB limit so that IVPR stays aligned */
477 gd->relocaddr &= ~(65536 - 1);
480 debug("Reserving %dk for U-Boot at: %08lx\n",
481 gd->mon_len >> 10, gd->relocaddr);
484 gd->start_addr_sp = gd->relocaddr;
490 * reserve after start_addr_sp the requested size and make the stack pointer
491 * 16-byte aligned, this alignment is needed for cast on the reserved memory
492 * ref = x86_64 ABI: https://reviews.llvm.org/D30049: 16 bytes
493 * = ARMv8 Instruction Set Overview: quad word, 16 bytes
495 static unsigned long reserve_stack_aligned(size_t size)
497 return ALIGN_DOWN(gd->start_addr_sp - size, 16);
500 #ifdef CONFIG_SYS_NONCACHED_MEMORY
501 static int reserve_noncached(void)
504 * The value of gd->start_addr_sp must match the value of
505 * mem_malloc_start calculated in board_r.c:initr_malloc(), which is
506 * passed to dlmalloc.c:mem_malloc_init() and then used by
507 * cache.c:noncached_init()
509 * These calculations must match the code in cache.c:noncached_init()
511 gd->start_addr_sp = ALIGN(gd->start_addr_sp, MMU_SECTION_SIZE) -
513 gd->start_addr_sp -= ALIGN(CONFIG_SYS_NONCACHED_MEMORY,
515 debug("Reserving %dM for noncached_alloc() at: %08lx\n",
516 CONFIG_SYS_NONCACHED_MEMORY >> 20, gd->start_addr_sp);
522 /* reserve memory for malloc() area */
523 static int reserve_malloc(void)
525 gd->start_addr_sp = reserve_stack_aligned(TOTAL_MALLOC_LEN);
526 debug("Reserving %dk for malloc() at: %08lx\n",
527 TOTAL_MALLOC_LEN >> 10, gd->start_addr_sp);
528 #ifdef CONFIG_SYS_NONCACHED_MEMORY
535 /* (permanently) allocate a Board Info struct */
536 static int reserve_board(void)
539 gd->start_addr_sp = reserve_stack_aligned(sizeof(struct bd_info));
540 gd->bd = (struct bd_info *)map_sysmem(gd->start_addr_sp,
541 sizeof(struct bd_info));
542 memset(gd->bd, '\0', sizeof(struct bd_info));
543 debug("Reserving %zu Bytes for Board Info at: %08lx\n",
544 sizeof(struct bd_info), gd->start_addr_sp);
549 static int reserve_global_data(void)
551 gd->start_addr_sp = reserve_stack_aligned(sizeof(gd_t));
552 gd->new_gd = (gd_t *)map_sysmem(gd->start_addr_sp, sizeof(gd_t));
553 debug("Reserving %zu Bytes for Global Data at: %08lx\n",
554 sizeof(gd_t), gd->start_addr_sp);
558 static int reserve_fdt(void)
560 if (!IS_ENABLED(CONFIG_OF_EMBED)) {
562 * If the device tree is sitting immediately above our image
563 * then we must relocate it. If it is embedded in the data
564 * section, then it will be relocated with other data.
567 gd->boardf->fdt_size =
568 ALIGN(fdt_totalsize(gd->fdt_blob), 32);
570 gd->start_addr_sp = reserve_stack_aligned(
571 gd->boardf->fdt_size);
572 gd->boardf->new_fdt = map_sysmem(gd->start_addr_sp,
573 gd->boardf->fdt_size);
574 debug("Reserving %lu Bytes for FDT at: %08lx\n",
575 gd->boardf->fdt_size, gd->start_addr_sp);
582 static int reserve_bootstage(void)
584 #ifdef CONFIG_BOOTSTAGE
585 int size = bootstage_get_size(true);
587 gd->start_addr_sp = reserve_stack_aligned(size);
588 gd->boardf->new_bootstage = map_sysmem(gd->start_addr_sp, size);
589 debug("Reserving %#x Bytes for bootstage at: %08lx\n", size,
596 __weak int arch_reserve_stacks(void)
601 static int reserve_stacks(void)
603 /* make stack pointer 16-byte aligned */
604 gd->start_addr_sp = reserve_stack_aligned(16);
607 * let the architecture-specific code tailor gd->start_addr_sp and
610 return arch_reserve_stacks();
613 static int reserve_bloblist(void)
615 #ifdef CONFIG_BLOBLIST
616 /* Align to a 4KB boundary for easier reading of addresses */
617 gd->start_addr_sp = ALIGN_DOWN(gd->start_addr_sp -
618 CONFIG_BLOBLIST_SIZE_RELOC, 0x1000);
619 gd->boardf->new_bloblist = map_sysmem(gd->start_addr_sp,
620 CONFIG_BLOBLIST_SIZE_RELOC);
626 static int display_new_sp(void)
628 debug("New Stack Pointer is: %08lx\n", gd->start_addr_sp);
633 __weak int arch_setup_bdinfo(void)
638 int setup_bdinfo(void)
640 struct bd_info *bd = gd->bd;
642 if (IS_ENABLED(CONFIG_SYS_HAS_SRAM)) {
643 bd->bi_sramstart = CONFIG_SYS_SRAM_BASE; /* start of SRAM */
644 bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE; /* size of SRAM */
647 return arch_setup_bdinfo();
651 static int init_post(void)
653 post_bootmode_init();
654 post_run(NULL, POST_ROM | post_bootmode_get(0));
660 static int reloc_fdt(void)
662 if (!IS_ENABLED(CONFIG_OF_EMBED)) {
663 if (gd->boardf->new_fdt) {
664 memcpy(gd->boardf->new_fdt, gd->fdt_blob,
665 fdt_totalsize(gd->fdt_blob));
666 gd->fdt_blob = gd->boardf->new_fdt;
673 static int reloc_bootstage(void)
675 #ifdef CONFIG_BOOTSTAGE
676 if (gd->flags & GD_FLG_SKIP_RELOC)
678 if (gd->boardf->new_bootstage)
679 bootstage_relocate(gd->boardf->new_bootstage);
685 static int reloc_bloblist(void)
687 #ifdef CONFIG_BLOBLIST
689 * Relocate only if we are supposed to send it
691 if ((gd->flags & GD_FLG_SKIP_RELOC) &&
692 CONFIG_BLOBLIST_SIZE == CONFIG_BLOBLIST_SIZE_RELOC) {
693 debug("Not relocating bloblist\n");
696 if (gd->boardf->new_bloblist) {
697 debug("Copying bloblist from %p to %p, size %x\n",
698 gd->bloblist, gd->boardf->new_bloblist,
699 gd->bloblist->total_size);
700 return bloblist_reloc(gd->boardf->new_bloblist,
701 CONFIG_BLOBLIST_SIZE_RELOC);
708 void mcheck_on_ramrelocation(size_t offset);
709 static int setup_reloc(void)
711 if (!(gd->flags & GD_FLG_SKIP_RELOC)) {
712 #ifdef CONFIG_TEXT_BASE
714 gd->reloc_off = gd->relocaddr - (unsigned long)__image_copy_start;
715 #elif defined(CONFIG_MICROBLAZE)
716 gd->reloc_off = gd->relocaddr - (u32)_start;
717 #elif defined(CONFIG_M68K)
719 * On all ColdFire arch cpu, monitor code starts always
720 * just after the default vector table location, so at 0x400
722 gd->reloc_off = gd->relocaddr - (CONFIG_TEXT_BASE + 0x400);
723 #elif !defined(CONFIG_SANDBOX)
724 gd->reloc_off = gd->relocaddr - CONFIG_TEXT_BASE;
729 memcpy(gd->new_gd, (char *)gd, sizeof(gd_t));
731 if (gd->flags & GD_FLG_SKIP_RELOC) {
732 debug("Skipping relocation due to flag\n");
734 #ifdef MCHECK_HEAP_PROTECTION
735 mcheck_on_ramrelocation(gd->reloc_off);
737 debug("Relocation Offset is: %08lx\n", gd->reloc_off);
738 debug("Relocating to %08lx, new gd at %08lx, sp at %08lx\n",
739 gd->relocaddr, (ulong)map_to_sysmem(gd->new_gd),
746 #ifdef CONFIG_OF_BOARD_FIXUP
747 static int fix_fdt(void)
749 return board_fix_fdt((void *)gd->fdt_blob);
753 /* ARM calls relocate_code from its crt0.S */
754 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX)
756 static int jump_to_copy(void)
758 if (gd->flags & GD_FLG_SKIP_RELOC)
761 * x86 is special, but in a nice way. It uses a trampoline which
762 * enables the dcache if possible.
764 * For now, other archs use relocate_code(), which is implemented
765 * similarly for all archs. When we do generic relocation, hopefully
766 * we can make all archs enable the dcache prior to relocation.
768 #if defined(CONFIG_X86) || defined(CONFIG_ARC)
770 * SDRAM and console are now initialised. The final stack can now
771 * be setup in SDRAM. Code execution will continue in Flash, but
772 * with the stack in SDRAM and Global Data in temporary memory
775 arch_setup_gd(gd->new_gd);
776 # if CONFIG_IS_ENABLED(X86_64)
777 board_init_f_r_trampoline64(gd->new_gd, gd->start_addr_sp);
779 board_init_f_r_trampoline(gd->start_addr_sp);
782 relocate_code(gd->start_addr_sp, gd->new_gd, gd->relocaddr);
789 /* Record the board_init_f() bootstage (after arch_cpu_init()) */
790 static int initf_bootstage(void)
792 bool from_spl = IS_ENABLED(CONFIG_SPL_BOOTSTAGE) &&
793 IS_ENABLED(CONFIG_BOOTSTAGE_STASH);
796 ret = bootstage_init(!from_spl);
800 ret = bootstage_unstash_default();
801 if (ret && ret != -ENOENT) {
802 debug("Failed to unstash bootstage: err=%d\n", ret);
807 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f");
812 static int initf_dm(void)
814 #if defined(CONFIG_DM) && CONFIG_IS_ENABLED(SYS_MALLOC_F)
817 bootstage_start(BOOTSTAGE_ID_ACCUM_DM_F, "dm_f");
818 ret = dm_init_and_scan(true);
819 bootstage_accum(BOOTSTAGE_ID_ACCUM_DM_F);
823 if (IS_ENABLED(CONFIG_TIMER_EARLY)) {
824 ret = dm_timer_init();
833 /* Architecture-specific memory reservation */
834 __weak int reserve_arch(void)
839 __weak int checkcpu(void)
844 __weak int clear_bss(void)
849 static int initf_upl(void)
854 if (!IS_ENABLED(CONFIG_UPL_IN) || !(gd->flags & GD_FLG_UPL))
857 upl = malloc(sizeof(struct upl));
859 ret = upl_read_handoff(upl, oftree_default());
861 printf("UPL handoff: read failure (err=%dE)\n", ret);
869 static const init_fnc_t init_sequence_f[] = {
871 #ifdef CONFIG_OF_CONTROL
874 #ifdef CONFIG_TRACE_EARLY
880 initf_bootstage, /* uses its own timer, so does not need DM */
883 #if defined(CONFIG_CONSOLE_RECORD_INIT_F)
886 INITCALL_EVENT(EVT_FSP_INIT_F),
887 arch_cpu_init, /* basic arch cpu dependent setup */
888 mach_cpu_init, /* SoC/machine dependent CPU setup */
890 #if defined(CONFIG_BOARD_EARLY_INIT_F)
893 #if defined(CONFIG_PPC) || defined(CONFIG_SYS_FSL_CLK) || defined(CONFIG_M68K)
894 /* get CPU and bus clocks according to the environment variable */
895 get_clocks, /* get CPU and bus clocks (etc.) */
897 #if !defined(CONFIG_M68K) || (defined(CONFIG_M68K) && !defined(CONFIG_MCFTMR))
898 timer_init, /* initialize timer */
900 #if defined(CONFIG_BOARD_POSTCLK_INIT)
903 env_init, /* initialize environment */
904 init_baud_rate, /* initialze baudrate settings */
905 serial_init, /* serial communications setup */
906 console_init_f, /* stage 1 init of console */
907 display_options, /* say that we are here */
908 display_text_info, /* show debugging info if required */
910 #if defined(CONFIG_SYSRESET)
913 #if defined(CONFIG_DISPLAY_CPUINFO)
914 print_cpuinfo, /* display cpu info (and speed) */
916 #if defined(CONFIG_DTB_RESELECT)
919 #if defined(CONFIG_DISPLAY_BOARDINFO)
922 INIT_FUNC_WATCHDOG_INIT
923 INITCALL_EVENT(EVT_MISC_INIT_F),
924 INIT_FUNC_WATCHDOG_RESET
925 #if CONFIG_IS_ENABLED(SYS_I2C_LEGACY)
929 dram_init, /* configure available RAM banks */
933 INIT_FUNC_WATCHDOG_RESET
934 #if defined(CFG_SYS_DRAM_TEST)
936 #endif /* CFG_SYS_DRAM_TEST */
937 INIT_FUNC_WATCHDOG_RESET
942 INIT_FUNC_WATCHDOG_RESET
944 * Now that we have DRAM mapped and working, we can
945 * relocate the code and continue running from DRAM.
947 * Reserve memory at end of RAM for (top down in that order):
948 * - area that won't get touched by U-Boot and Linux (optional)
949 * - kernel log buffer
953 * - board info struct
956 #if defined(CONFIG_OF_BOARD_FIXUP) && !defined(CONFIG_OF_INITIAL_DTB_READONLY)
963 setup_relocaddr_from_bloblist,
972 #if defined(CONFIG_OF_BOARD_FIXUP) && defined(CONFIG_OF_INITIAL_DTB_READONLY)
982 INIT_FUNC_WATCHDOG_RESET
985 INIT_FUNC_WATCHDOG_RESET
986 #if !defined(CONFIG_OF_BOARD_FIXUP) || !defined(CONFIG_OF_INITIAL_DTB_READONLY)
992 #if defined(CONFIG_X86) || defined(CONFIG_ARC)
998 * Deregister all cyclic functions before relocation, so that
999 * gd->cyclic_list does not contain any references to pre-relocation
1000 * devices. Drivers will register their cyclic functions anew when the
1001 * devices are probed again.
1003 * This should happen as late as possible so that the window where a
1004 * watchdog device is not serviced is as small as possible.
1006 cyclic_unregister_all,
1007 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX)
1013 void board_init_f(ulong boot_flags)
1015 struct board_f boardf;
1017 gd->flags = boot_flags;
1018 gd->flags &= ~GD_FLG_HAVE_CONSOLE;
1019 gd->boardf = &boardf;
1021 if (initcall_run_list(init_sequence_f))
1024 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) && \
1025 !defined(CONFIG_EFI_APP) && !CONFIG_IS_ENABLED(X86_64) && \
1026 !defined(CONFIG_ARC)
1027 /* NOTREACHED - jump_to_copy() does not return */
1032 #if defined(CONFIG_X86) || defined(CONFIG_ARC)
1034 * For now this code is only used on x86.
1036 * init_sequence_f_r is the list of init functions which are run when
1037 * U-Boot is executing from Flash with a semi-limited 'C' environment.
1038 * The following limitations must be considered when implementing an
1040 * - 'static' variables are read-only
1041 * - Global Data (gd->xxx) is read/write
1043 * The '_f_r' sequence must, as a minimum, copy U-Boot to RAM (if
1044 * supported). It _should_, if possible, copy global data to RAM and
1045 * initialise the CPU caches (to speed up the relocation process)
1047 * NOTE: At present only x86 uses this route, but it is intended that
1048 * all archs will move to this when generic relocation is implemented.
1050 static const init_fnc_t init_sequence_f_r[] = {
1051 #if !CONFIG_IS_ENABLED(X86_64)
1058 void board_init_f_r(void)
1060 if (initcall_run_list(init_sequence_f_r))
1064 * The pre-relocation drivers may be using memory that has now gone
1065 * away. Mark serial as unavailable - this will fall back to the debug
1066 * UART if available.
1068 * Do the same with log drivers since the memory may not be available.
1070 gd->flags &= ~(GD_FLG_SERIAL_READY | GD_FLG_LOG_READY);
1076 * U-Boot has been copied into SDRAM, the BSS has been cleared etc.
1077 * Transfer execution from Flash to RAM by calculating the address
1078 * of the in-RAM copy of board_init_r() and calling it
1080 (board_init_r + gd->reloc_off)((gd_t *)gd, gd->relocaddr);
1082 /* NOTREACHED - board_init_r() does not return */
1085 #endif /* CONFIG_X86 */