1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (c) 2011 The Chromium OS Authors.
4 * (C) Copyright 2002-2006
5 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
8 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
9 * Marius Groeger <mgroeger@sysgo.de>
18 #include <env_internal.h>
32 #include <status_led.h>
38 #ifdef CONFIG_MACH_TYPE
39 #include <asm/mach-types.h>
41 #if defined(CONFIG_MP) && defined(CONFIG_PPC)
45 #include <asm/sections.h>
47 #include <linux/errno.h>
50 * Pointer to initial global data area
52 * Here we initialize it if needed.
54 #ifdef XTRN_DECLARE_GLOBAL_DATA_PTR
55 #undef XTRN_DECLARE_GLOBAL_DATA_PTR
56 #define XTRN_DECLARE_GLOBAL_DATA_PTR /* empty = allocate here */
57 DECLARE_GLOBAL_DATA_PTR = (gd_t *)(CONFIG_SYS_INIT_GD_ADDR);
59 DECLARE_GLOBAL_DATA_PTR;
63 * TODO(sjg@chromium.org): IMO this code should be
64 * refactored to a single function, something like:
66 * void led_set_state(enum led_colour_t colour, int on);
68 /************************************************************************
69 * Coloured LED functionality
70 ************************************************************************
71 * May be supplied by boards if desired
73 __weak void coloured_LED_init(void) {}
74 __weak void red_led_on(void) {}
75 __weak void red_led_off(void) {}
76 __weak void green_led_on(void) {}
77 __weak void green_led_off(void) {}
78 __weak void yellow_led_on(void) {}
79 __weak void yellow_led_off(void) {}
80 __weak void blue_led_on(void) {}
81 __weak void blue_led_off(void) {}
84 * Why is gd allocated a register? Prior to reloc it might be better to
85 * just pass it around to each function in this file?
87 * After reloc one could argue that it is hardly used and doesn't need
88 * to be in a register. Or if it is it should perhaps hold pointers to all
89 * global data for all modules, so that post-reloc we can avoid the massive
90 * literal pool we get on ARM. Or perhaps just encourage each module to use
94 #if defined(CONFIG_WATCHDOG) || defined(CONFIG_HW_WATCHDOG)
95 static int init_func_watchdog_init(void)
97 # if defined(CONFIG_HW_WATCHDOG) && \
98 (defined(CONFIG_M68K) || defined(CONFIG_MICROBLAZE) || \
99 defined(CONFIG_SH) || \
100 defined(CONFIG_DESIGNWARE_WATCHDOG) || \
101 defined(CONFIG_IMX_WATCHDOG))
103 puts(" Watchdog enabled\n");
110 int init_func_watchdog_reset(void)
116 #endif /* CONFIG_WATCHDOG */
118 __weak void board_add_ram_info(int use_default)
120 /* please define platform specific board_add_ram_info() */
123 static int init_baud_rate(void)
125 gd->baudrate = env_get_ulong("baudrate", 10, CONFIG_BAUDRATE);
129 static int display_text_info(void)
131 #if !defined(CONFIG_SANDBOX) && !defined(CONFIG_EFI_APP)
132 ulong bss_start, bss_end, text_base;
134 bss_start = (ulong)&__bss_start;
135 bss_end = (ulong)&__bss_end;
137 #ifdef CONFIG_SYS_TEXT_BASE
138 text_base = CONFIG_SYS_TEXT_BASE;
140 text_base = CONFIG_SYS_MONITOR_BASE;
143 debug("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
144 text_base, bss_start, bss_end);
150 #ifdef CONFIG_SYSRESET
151 static int print_resetinfo(void)
157 ret = uclass_first_device_err(UCLASS_SYSRESET, &dev);
159 debug("%s: No sysreset device found (error: %d)\n",
161 /* Not all boards have sysreset drivers available during early
162 * boot, so don't fail if one can't be found.
167 if (!sysreset_get_status(dev, status, sizeof(status)))
168 printf("%s", status);
174 #if defined(CONFIG_DISPLAY_CPUINFO) && CONFIG_IS_ENABLED(CPU)
175 static int print_cpuinfo(void)
181 ret = uclass_first_device_err(UCLASS_CPU, &dev);
183 debug("%s: Could not get CPU device (err = %d)\n",
188 ret = cpu_get_desc(dev, desc, sizeof(desc));
190 debug("%s: Could not get CPU description (err = %d)\n",
195 printf("CPU: %s\n", desc);
201 static int announce_dram_init(void)
207 static int show_dram_config(void)
209 unsigned long long size;
211 #ifdef CONFIG_NR_DRAM_BANKS
214 debug("\nRAM Configuration:\n");
215 for (i = size = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
216 size += gd->bd->bi_dram[i].size;
217 debug("Bank #%d: %llx ", i,
218 (unsigned long long)(gd->bd->bi_dram[i].start));
220 print_size(gd->bd->bi_dram[i].size, "\n");
228 print_size(size, "");
229 board_add_ram_info(0);
235 __weak int dram_init_banksize(void)
237 #if defined(CONFIG_NR_DRAM_BANKS) && defined(CONFIG_SYS_SDRAM_BASE)
238 gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
239 gd->bd->bi_dram[0].size = get_effective_memsize();
245 #if defined(CONFIG_SYS_I2C)
246 static int init_func_i2c(void)
249 #ifdef CONFIG_SYS_I2C
252 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
259 #if defined(CONFIG_VID)
260 __weak int init_func_vid(void)
266 static int setup_mon_len(void)
268 #if defined(__ARM__) || defined(__MICROBLAZE__)
269 gd->mon_len = (ulong)&__bss_end - (ulong)_start;
270 #elif defined(CONFIG_SANDBOX) || defined(CONFIG_EFI_APP)
271 gd->mon_len = (ulong)&_end - (ulong)_init;
272 #elif defined(CONFIG_NIOS2) || defined(CONFIG_XTENSA)
273 gd->mon_len = CONFIG_SYS_MONITOR_LEN;
274 #elif defined(CONFIG_NDS32) || defined(CONFIG_SH) || defined(CONFIG_RISCV)
275 gd->mon_len = (ulong)(&__bss_end) - (ulong)(&_start);
276 #elif defined(CONFIG_SYS_MONITOR_BASE)
277 /* TODO: use (ulong)&__bss_end - (ulong)&__text_start; ? */
278 gd->mon_len = (ulong)&__bss_end - CONFIG_SYS_MONITOR_BASE;
283 static int setup_spl_handoff(void)
285 #if CONFIG_IS_ENABLED(HANDOFF)
286 gd->spl_handoff = bloblist_find(BLOBLISTT_SPL_HANDOFF,
287 sizeof(struct spl_handoff));
288 debug("Found SPL hand-off info %p\n", gd->spl_handoff);
294 __weak int arch_cpu_init(void)
299 __weak int mach_cpu_init(void)
304 /* Get the top of usable RAM */
305 __weak ulong board_get_usable_ram_top(ulong total_size)
307 #ifdef CONFIG_SYS_SDRAM_BASE
309 * Detect whether we have so much RAM that it goes past the end of our
310 * 32-bit address space. If so, clip the usable RAM so it doesn't.
312 if (gd->ram_top < CONFIG_SYS_SDRAM_BASE)
314 * Will wrap back to top of 32-bit space when reservations
322 static int setup_dest_addr(void)
324 debug("Monitor len: %08lX\n", gd->mon_len);
326 * Ram is setup, size stored in gd !!
328 debug("Ram size: %08lX\n", (ulong)gd->ram_size);
329 #if defined(CONFIG_SYS_MEM_TOP_HIDE)
331 * Subtract specified amount of memory to hide so that it won't
332 * get "touched" at all by U-Boot. By fixing up gd->ram_size
333 * the Linux kernel should now get passed the now "corrected"
334 * memory size and won't touch it either. This should work
335 * for arch/ppc and arch/powerpc. Only Linux board ports in
336 * arch/powerpc with bootwrapper support, that recalculate the
337 * memory size from the SDRAM controller setup will have to
340 gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
342 #ifdef CONFIG_SYS_SDRAM_BASE
343 gd->ram_base = CONFIG_SYS_SDRAM_BASE;
345 gd->ram_top = gd->ram_base + get_effective_memsize();
346 gd->ram_top = board_get_usable_ram_top(gd->mon_len);
347 gd->relocaddr = gd->ram_top;
348 debug("Ram top: %08lX\n", (ulong)gd->ram_top);
349 #if defined(CONFIG_MP) && (defined(CONFIG_MPC86xx) || defined(CONFIG_E500))
351 * We need to make sure the location we intend to put secondary core
352 * boot code is reserved and not used by any part of u-boot
354 if (gd->relocaddr > determine_mp_bootpg(NULL)) {
355 gd->relocaddr = determine_mp_bootpg(NULL);
356 debug("Reserving MP boot page to %08lx\n", gd->relocaddr);
363 /* reserve protected RAM */
364 static int reserve_pram(void)
368 reg = env_get_ulong("pram", 10, CONFIG_PRAM);
369 gd->relocaddr -= (reg << 10); /* size is in kB */
370 debug("Reserving %ldk for protected RAM at %08lx\n", reg,
374 #endif /* CONFIG_PRAM */
376 /* Round memory pointer down to next 4 kB limit */
377 static int reserve_round_4k(void)
379 gd->relocaddr &= ~(4096 - 1);
384 __weak int reserve_mmu(void)
386 #if !(CONFIG_IS_ENABLED(SYS_ICACHE_OFF) && CONFIG_IS_ENABLED(SYS_DCACHE_OFF))
387 /* reserve TLB table */
388 gd->arch.tlb_size = PGTABLE_SIZE;
389 gd->relocaddr -= gd->arch.tlb_size;
391 /* round down to next 64 kB limit */
392 gd->relocaddr &= ~(0x10000 - 1);
394 gd->arch.tlb_addr = gd->relocaddr;
395 debug("TLB table from %08lx to %08lx\n", gd->arch.tlb_addr,
396 gd->arch.tlb_addr + gd->arch.tlb_size);
398 #ifdef CONFIG_SYS_MEM_RESERVE_SECURE
400 * Record allocated tlb_addr in case gd->tlb_addr to be overwritten
401 * with location within secure ram.
403 gd->arch.tlb_allocated = gd->arch.tlb_addr;
411 static int reserve_video(void)
413 #ifdef CONFIG_DM_VIDEO
417 addr = gd->relocaddr;
418 ret = video_reserve(&addr);
421 gd->relocaddr = addr;
422 #elif defined(CONFIG_LCD)
423 # ifdef CONFIG_FB_ADDR
424 gd->fb_base = CONFIG_FB_ADDR;
426 /* reserve memory for LCD display (always full pages) */
427 gd->relocaddr = lcd_setmem(gd->relocaddr);
428 gd->fb_base = gd->relocaddr;
429 # endif /* CONFIG_FB_ADDR */
435 static int reserve_trace(void)
438 gd->relocaddr -= CONFIG_TRACE_BUFFER_SIZE;
439 gd->trace_buff = map_sysmem(gd->relocaddr, CONFIG_TRACE_BUFFER_SIZE);
440 debug("Reserving %luk for trace data at: %08lx\n",
441 (unsigned long)CONFIG_TRACE_BUFFER_SIZE >> 10, gd->relocaddr);
447 static int reserve_uboot(void)
449 if (!(gd->flags & GD_FLG_SKIP_RELOC)) {
451 * reserve memory for U-Boot code, data & bss
452 * round down to next 4 kB limit
454 gd->relocaddr -= gd->mon_len;
455 gd->relocaddr &= ~(4096 - 1);
456 #if defined(CONFIG_E500) || defined(CONFIG_MIPS)
457 /* round down to next 64 kB limit so that IVPR stays aligned */
458 gd->relocaddr &= ~(65536 - 1);
461 debug("Reserving %ldk for U-Boot at: %08lx\n",
462 gd->mon_len >> 10, gd->relocaddr);
465 gd->start_addr_sp = gd->relocaddr;
470 /* reserve memory for malloc() area */
471 static int reserve_malloc(void)
473 gd->start_addr_sp = gd->start_addr_sp - TOTAL_MALLOC_LEN;
474 debug("Reserving %dk for malloc() at: %08lx\n",
475 TOTAL_MALLOC_LEN >> 10, gd->start_addr_sp);
479 /* (permanently) allocate a Board Info struct */
480 static int reserve_board(void)
483 gd->start_addr_sp -= sizeof(bd_t);
484 gd->bd = (bd_t *)map_sysmem(gd->start_addr_sp, sizeof(bd_t));
485 memset(gd->bd, '\0', sizeof(bd_t));
486 debug("Reserving %zu Bytes for Board Info at: %08lx\n",
487 sizeof(bd_t), gd->start_addr_sp);
492 static int setup_machine(void)
494 #ifdef CONFIG_MACH_TYPE
495 gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
500 static int reserve_global_data(void)
502 gd->start_addr_sp -= sizeof(gd_t);
503 gd->new_gd = (gd_t *)map_sysmem(gd->start_addr_sp, sizeof(gd_t));
504 debug("Reserving %zu Bytes for Global Data at: %08lx\n",
505 sizeof(gd_t), gd->start_addr_sp);
509 static int reserve_fdt(void)
511 #ifndef CONFIG_OF_EMBED
513 * If the device tree is sitting immediately above our image then we
514 * must relocate it. If it is embedded in the data section, then it
515 * will be relocated with other data.
518 gd->fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
520 gd->start_addr_sp -= gd->fdt_size;
521 gd->new_fdt = map_sysmem(gd->start_addr_sp, gd->fdt_size);
522 debug("Reserving %lu Bytes for FDT at: %08lx\n",
523 gd->fdt_size, gd->start_addr_sp);
530 static int reserve_bootstage(void)
532 #ifdef CONFIG_BOOTSTAGE
533 int size = bootstage_get_size();
535 gd->start_addr_sp -= size;
536 gd->new_bootstage = map_sysmem(gd->start_addr_sp, size);
537 debug("Reserving %#x Bytes for bootstage at: %08lx\n", size,
544 __weak int arch_reserve_stacks(void)
549 static int reserve_stacks(void)
551 /* make stack pointer 16-byte aligned */
552 gd->start_addr_sp -= 16;
553 gd->start_addr_sp &= ~0xf;
556 * let the architecture-specific code tailor gd->start_addr_sp and
559 return arch_reserve_stacks();
562 static int reserve_bloblist(void)
564 #ifdef CONFIG_BLOBLIST
565 gd->start_addr_sp -= CONFIG_BLOBLIST_SIZE;
566 gd->new_bloblist = map_sysmem(gd->start_addr_sp, CONFIG_BLOBLIST_SIZE);
572 static int display_new_sp(void)
574 debug("New Stack Pointer is: %08lx\n", gd->start_addr_sp);
579 #if defined(CONFIG_M68K) || defined(CONFIG_MIPS) || defined(CONFIG_PPC) || \
581 static int setup_board_part1(void)
586 * Save local variables to board info struct
588 bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; /* start of memory */
589 bd->bi_memsize = gd->ram_size; /* size in bytes */
591 #ifdef CONFIG_SYS_SRAM_BASE
592 bd->bi_sramstart = CONFIG_SYS_SRAM_BASE; /* start of SRAM */
593 bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE; /* size of SRAM */
596 #if defined(CONFIG_E500) || defined(CONFIG_MPC86xx)
597 bd->bi_immr_base = CONFIG_SYS_IMMR; /* base of IMMR register */
599 #if defined(CONFIG_M68K)
600 bd->bi_mbar_base = CONFIG_SYS_MBAR; /* base of internal registers */
602 #if defined(CONFIG_MPC83xx)
603 bd->bi_immrbar = CONFIG_SYS_IMMR;
610 #if defined(CONFIG_PPC) || defined(CONFIG_M68K)
611 static int setup_board_part2(void)
615 bd->bi_intfreq = gd->cpu_clk; /* Internal Freq, in Hz */
616 bd->bi_busfreq = gd->bus_clk; /* Bus Freq, in Hz */
617 #if defined(CONFIG_CPM2)
618 bd->bi_cpmfreq = gd->arch.cpm_clk;
619 bd->bi_brgfreq = gd->arch.brg_clk;
620 bd->bi_sccfreq = gd->arch.scc_clk;
621 bd->bi_vco = gd->arch.vco_out;
622 #endif /* CONFIG_CPM2 */
623 #if defined(CONFIG_M68K) && defined(CONFIG_PCI)
624 bd->bi_pcifreq = gd->pci_clk;
626 #if defined(CONFIG_EXTRA_CLOCK)
627 bd->bi_inpfreq = gd->arch.inp_clk; /* input Freq in Hz */
628 bd->bi_vcofreq = gd->arch.vco_clk; /* vco Freq in Hz */
629 bd->bi_flbfreq = gd->arch.flb_clk; /* flexbus Freq in Hz */
637 static int init_post(void)
639 post_bootmode_init();
640 post_run(NULL, POST_ROM | post_bootmode_get(0));
646 static int reloc_fdt(void)
648 #ifndef CONFIG_OF_EMBED
649 if (gd->flags & GD_FLG_SKIP_RELOC)
652 memcpy(gd->new_fdt, gd->fdt_blob, gd->fdt_size);
653 gd->fdt_blob = gd->new_fdt;
660 static int reloc_bootstage(void)
662 #ifdef CONFIG_BOOTSTAGE
663 if (gd->flags & GD_FLG_SKIP_RELOC)
665 if (gd->new_bootstage) {
666 int size = bootstage_get_size();
668 debug("Copying bootstage from %p to %p, size %x\n",
669 gd->bootstage, gd->new_bootstage, size);
670 memcpy(gd->new_bootstage, gd->bootstage, size);
671 gd->bootstage = gd->new_bootstage;
678 static int reloc_bloblist(void)
680 #ifdef CONFIG_BLOBLIST
681 if (gd->flags & GD_FLG_SKIP_RELOC)
683 if (gd->new_bloblist) {
684 int size = CONFIG_BLOBLIST_SIZE;
686 debug("Copying bloblist from %p to %p, size %x\n",
687 gd->bloblist, gd->new_bloblist, size);
688 memcpy(gd->new_bloblist, gd->bloblist, size);
689 gd->bloblist = gd->new_bloblist;
696 static int setup_reloc(void)
698 if (gd->flags & GD_FLG_SKIP_RELOC) {
699 debug("Skipping relocation due to flag\n");
703 #ifdef CONFIG_SYS_TEXT_BASE
705 gd->reloc_off = gd->relocaddr - (unsigned long)__image_copy_start;
706 #elif defined(CONFIG_M68K)
708 * On all ColdFire arch cpu, monitor code starts always
709 * just after the default vector table location, so at 0x400
711 gd->reloc_off = gd->relocaddr - (CONFIG_SYS_TEXT_BASE + 0x400);
712 #elif !defined(CONFIG_SANDBOX)
713 gd->reloc_off = gd->relocaddr - CONFIG_SYS_TEXT_BASE;
716 memcpy(gd->new_gd, (char *)gd, sizeof(gd_t));
718 debug("Relocation Offset is: %08lx\n", gd->reloc_off);
719 debug("Relocating to %08lx, new gd at %08lx, sp at %08lx\n",
720 gd->relocaddr, (ulong)map_to_sysmem(gd->new_gd),
726 #ifdef CONFIG_OF_BOARD_FIXUP
727 static int fix_fdt(void)
729 return board_fix_fdt((void *)gd->fdt_blob);
733 /* ARM calls relocate_code from its crt0.S */
734 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) && \
735 !CONFIG_IS_ENABLED(X86_64)
737 static int jump_to_copy(void)
739 if (gd->flags & GD_FLG_SKIP_RELOC)
742 * x86 is special, but in a nice way. It uses a trampoline which
743 * enables the dcache if possible.
745 * For now, other archs use relocate_code(), which is implemented
746 * similarly for all archs. When we do generic relocation, hopefully
747 * we can make all archs enable the dcache prior to relocation.
749 #if defined(CONFIG_X86) || defined(CONFIG_ARC)
751 * SDRAM and console are now initialised. The final stack can now
752 * be setup in SDRAM. Code execution will continue in Flash, but
753 * with the stack in SDRAM and Global Data in temporary memory
756 arch_setup_gd(gd->new_gd);
757 board_init_f_r_trampoline(gd->start_addr_sp);
759 relocate_code(gd->start_addr_sp, gd->new_gd, gd->relocaddr);
766 /* Record the board_init_f() bootstage (after arch_cpu_init()) */
767 static int initf_bootstage(void)
769 bool from_spl = IS_ENABLED(CONFIG_SPL_BOOTSTAGE) &&
770 IS_ENABLED(CONFIG_BOOTSTAGE_STASH);
773 ret = bootstage_init(!from_spl);
777 const void *stash = map_sysmem(CONFIG_BOOTSTAGE_STASH_ADDR,
778 CONFIG_BOOTSTAGE_STASH_SIZE);
780 ret = bootstage_unstash(stash, CONFIG_BOOTSTAGE_STASH_SIZE);
781 if (ret && ret != -ENOENT) {
782 debug("Failed to unstash bootstage: err=%d\n", ret);
787 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f");
792 static int initf_console_record(void)
794 #if defined(CONFIG_CONSOLE_RECORD) && CONFIG_VAL(SYS_MALLOC_F_LEN)
795 return console_record_init();
801 static int initf_dm(void)
803 #if defined(CONFIG_DM) && CONFIG_VAL(SYS_MALLOC_F_LEN)
806 bootstage_start(BOOTSTATE_ID_ACCUM_DM_F, "dm_f");
807 ret = dm_init_and_scan(true);
808 bootstage_accum(BOOTSTATE_ID_ACCUM_DM_F);
812 #ifdef CONFIG_TIMER_EARLY
813 ret = dm_timer_init();
821 /* Architecture-specific memory reservation */
822 __weak int reserve_arch(void)
827 __weak int arch_cpu_init_dm(void)
832 static const init_fnc_t init_sequence_f[] = {
834 #ifdef CONFIG_OF_CONTROL
837 #ifdef CONFIG_TRACE_EARLY
842 initf_bootstage, /* uses its own timer, so does not need DM */
843 #ifdef CONFIG_BLOBLIST
847 initf_console_record,
848 #if defined(CONFIG_HAVE_FSP)
851 arch_cpu_init, /* basic arch cpu dependent setup */
852 mach_cpu_init, /* SoC/machine dependent CPU setup */
855 #if defined(CONFIG_BOARD_EARLY_INIT_F)
858 #if defined(CONFIG_PPC) || defined(CONFIG_SYS_FSL_CLK) || defined(CONFIG_M68K)
859 /* get CPU and bus clocks according to the environment variable */
860 get_clocks, /* get CPU and bus clocks (etc.) */
862 #if !defined(CONFIG_M68K)
863 timer_init, /* initialize timer */
865 #if defined(CONFIG_BOARD_POSTCLK_INIT)
868 env_init, /* initialize environment */
869 init_baud_rate, /* initialze baudrate settings */
870 serial_init, /* serial communications setup */
871 console_init_f, /* stage 1 init of console */
872 display_options, /* say that we are here */
873 display_text_info, /* show debugging info if required */
874 #if defined(CONFIG_PPC) || defined(CONFIG_SH) || defined(CONFIG_X86)
877 #if defined(CONFIG_SYSRESET)
880 #if defined(CONFIG_DISPLAY_CPUINFO)
881 print_cpuinfo, /* display cpu info (and speed) */
883 #if defined(CONFIG_DTB_RESELECT)
886 #if defined(CONFIG_DISPLAY_BOARDINFO)
889 INIT_FUNC_WATCHDOG_INIT
890 #if defined(CONFIG_MISC_INIT_F)
893 INIT_FUNC_WATCHDOG_RESET
894 #if defined(CONFIG_SYS_I2C)
897 #if defined(CONFIG_VID) && !defined(CONFIG_SPL)
901 dram_init, /* configure available RAM banks */
905 INIT_FUNC_WATCHDOG_RESET
906 #if defined(CONFIG_SYS_DRAM_TEST)
908 #endif /* CONFIG_SYS_DRAM_TEST */
909 INIT_FUNC_WATCHDOG_RESET
914 INIT_FUNC_WATCHDOG_RESET
916 * Now that we have DRAM mapped and working, we can
917 * relocate the code and continue running from DRAM.
919 * Reserve memory at end of RAM for (top down in that order):
920 * - area that won't get touched by U-Boot and Linux (optional)
921 * - kernel log buffer
925 * - board info struct
949 #if defined(CONFIG_M68K) || defined(CONFIG_MIPS) || defined(CONFIG_PPC) || \
953 #if defined(CONFIG_PPC) || defined(CONFIG_M68K)
954 INIT_FUNC_WATCHDOG_RESET
958 #ifdef CONFIG_OF_BOARD_FIXUP
961 INIT_FUNC_WATCHDOG_RESET
966 #if defined(CONFIG_X86) || defined(CONFIG_ARC)
971 #if defined(CONFIG_XTENSA)
974 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) && \
975 !CONFIG_IS_ENABLED(X86_64)
981 void board_init_f(ulong boot_flags)
983 gd->flags = boot_flags;
984 gd->have_console = 0;
986 if (initcall_run_list(init_sequence_f))
989 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) && \
990 !defined(CONFIG_EFI_APP) && !CONFIG_IS_ENABLED(X86_64) && \
992 /* NOTREACHED - jump_to_copy() does not return */
997 #if defined(CONFIG_X86) || defined(CONFIG_ARC)
999 * For now this code is only used on x86.
1001 * init_sequence_f_r is the list of init functions which are run when
1002 * U-Boot is executing from Flash with a semi-limited 'C' environment.
1003 * The following limitations must be considered when implementing an
1005 * - 'static' variables are read-only
1006 * - Global Data (gd->xxx) is read/write
1008 * The '_f_r' sequence must, as a minimum, copy U-Boot to RAM (if
1009 * supported). It _should_, if possible, copy global data to RAM and
1010 * initialise the CPU caches (to speed up the relocation process)
1012 * NOTE: At present only x86 uses this route, but it is intended that
1013 * all archs will move to this when generic relocation is implemented.
1015 static const init_fnc_t init_sequence_f_r[] = {
1016 #if !CONFIG_IS_ENABLED(X86_64)
1023 void board_init_f_r(void)
1025 if (initcall_run_list(init_sequence_f_r))
1029 * The pre-relocation drivers may be using memory that has now gone
1030 * away. Mark serial as unavailable - this will fall back to the debug
1031 * UART if available.
1033 * Do the same with log drivers since the memory may not be available.
1035 gd->flags &= ~(GD_FLG_SERIAL_READY | GD_FLG_LOG_READY);
1041 * U-Boot has been copied into SDRAM, the BSS has been cleared etc.
1042 * Transfer execution from Flash to RAM by calculating the address
1043 * of the in-RAM copy of board_init_r() and calling it
1045 (board_init_r + gd->reloc_off)((gd_t *)gd, gd->relocaddr);
1047 /* NOTREACHED - board_init_r() does not return */
1050 #endif /* CONFIG_X86 */