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>
17 #include <environment.h>
30 #include <status_led.h>
36 #ifdef CONFIG_MACH_TYPE
37 #include <asm/mach-types.h>
39 #if defined(CONFIG_MP) && defined(CONFIG_PPC)
43 #include <asm/sections.h>
45 #include <linux/errno.h>
48 * Pointer to initial global data area
50 * Here we initialize it if needed.
52 #ifdef XTRN_DECLARE_GLOBAL_DATA_PTR
53 #undef XTRN_DECLARE_GLOBAL_DATA_PTR
54 #define XTRN_DECLARE_GLOBAL_DATA_PTR /* empty = allocate here */
55 DECLARE_GLOBAL_DATA_PTR = (gd_t *)(CONFIG_SYS_INIT_GD_ADDR);
57 DECLARE_GLOBAL_DATA_PTR;
61 * TODO(sjg@chromium.org): IMO this code should be
62 * refactored to a single function, something like:
64 * void led_set_state(enum led_colour_t colour, int on);
66 /************************************************************************
67 * Coloured LED functionality
68 ************************************************************************
69 * May be supplied by boards if desired
71 __weak void coloured_LED_init(void) {}
72 __weak void red_led_on(void) {}
73 __weak void red_led_off(void) {}
74 __weak void green_led_on(void) {}
75 __weak void green_led_off(void) {}
76 __weak void yellow_led_on(void) {}
77 __weak void yellow_led_off(void) {}
78 __weak void blue_led_on(void) {}
79 __weak void blue_led_off(void) {}
82 * Why is gd allocated a register? Prior to reloc it might be better to
83 * just pass it around to each function in this file?
85 * After reloc one could argue that it is hardly used and doesn't need
86 * to be in a register. Or if it is it should perhaps hold pointers to all
87 * global data for all modules, so that post-reloc we can avoid the massive
88 * literal pool we get on ARM. Or perhaps just encourage each module to use
92 #if defined(CONFIG_WATCHDOG) || defined(CONFIG_HW_WATCHDOG)
93 static int init_func_watchdog_init(void)
95 # if defined(CONFIG_HW_WATCHDOG) && \
96 (defined(CONFIG_M68K) || defined(CONFIG_MICROBLAZE) || \
97 defined(CONFIG_SH) || \
98 defined(CONFIG_DESIGNWARE_WATCHDOG) || \
99 defined(CONFIG_IMX_WATCHDOG))
101 puts(" Watchdog enabled\n");
108 int init_func_watchdog_reset(void)
114 #endif /* CONFIG_WATCHDOG */
116 __weak void board_add_ram_info(int use_default)
118 /* please define platform specific board_add_ram_info() */
121 static int init_baud_rate(void)
123 gd->baudrate = env_get_ulong("baudrate", 10, CONFIG_BAUDRATE);
127 static int display_text_info(void)
129 #if !defined(CONFIG_SANDBOX) && !defined(CONFIG_EFI_APP)
130 ulong bss_start, bss_end, text_base;
132 bss_start = (ulong)&__bss_start;
133 bss_end = (ulong)&__bss_end;
135 #ifdef CONFIG_SYS_TEXT_BASE
136 text_base = CONFIG_SYS_TEXT_BASE;
138 text_base = CONFIG_SYS_MONITOR_BASE;
141 debug("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
142 text_base, bss_start, bss_end);
148 #ifdef CONFIG_SYSRESET
149 static int print_resetinfo(void)
155 ret = uclass_first_device_err(UCLASS_SYSRESET, &dev);
157 debug("%s: No sysreset device found (error: %d)\n",
159 /* Not all boards have sysreset drivers available during early
160 * boot, so don't fail if one can't be found.
165 if (!sysreset_get_status(dev, status, sizeof(status)))
166 printf("%s", status);
172 #if defined(CONFIG_DISPLAY_CPUINFO) && CONFIG_IS_ENABLED(CPU)
173 static int print_cpuinfo(void)
179 ret = uclass_first_device_err(UCLASS_CPU, &dev);
181 debug("%s: Could not get CPU device (err = %d)\n",
186 ret = cpu_get_desc(dev, desc, sizeof(desc));
188 debug("%s: Could not get CPU description (err = %d)\n",
193 printf("CPU: %s\n", desc);
199 static int announce_dram_init(void)
205 static int show_dram_config(void)
207 unsigned long long size;
209 #ifdef CONFIG_NR_DRAM_BANKS
212 debug("\nRAM Configuration:\n");
213 for (i = size = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
214 size += gd->bd->bi_dram[i].size;
215 debug("Bank #%d: %llx ", i,
216 (unsigned long long)(gd->bd->bi_dram[i].start));
218 print_size(gd->bd->bi_dram[i].size, "\n");
226 print_size(size, "");
227 board_add_ram_info(0);
233 __weak int dram_init_banksize(void)
235 #if defined(CONFIG_NR_DRAM_BANKS) && defined(CONFIG_SYS_SDRAM_BASE)
236 gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
237 gd->bd->bi_dram[0].size = get_effective_memsize();
243 #if defined(CONFIG_SYS_I2C)
244 static int init_func_i2c(void)
247 #ifdef CONFIG_SYS_I2C
250 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
257 #if defined(CONFIG_VID)
258 __weak int init_func_vid(void)
264 static int setup_mon_len(void)
266 #if defined(__ARM__) || defined(__MICROBLAZE__)
267 gd->mon_len = (ulong)&__bss_end - (ulong)_start;
268 #elif defined(CONFIG_SANDBOX) || defined(CONFIG_EFI_APP)
269 gd->mon_len = (ulong)&_end - (ulong)_init;
270 #elif defined(CONFIG_NIOS2) || defined(CONFIG_XTENSA)
271 gd->mon_len = CONFIG_SYS_MONITOR_LEN;
272 #elif defined(CONFIG_NDS32) || defined(CONFIG_SH) || defined(CONFIG_RISCV)
273 gd->mon_len = (ulong)(&__bss_end) - (ulong)(&_start);
274 #elif defined(CONFIG_SYS_MONITOR_BASE)
275 /* TODO: use (ulong)&__bss_end - (ulong)&__text_start; ? */
276 gd->mon_len = (ulong)&__bss_end - CONFIG_SYS_MONITOR_BASE;
281 static int setup_spl_handoff(void)
283 #if CONFIG_IS_ENABLED(HANDOFF)
284 gd->spl_handoff = bloblist_find(BLOBLISTT_SPL_HANDOFF,
285 sizeof(struct spl_handoff));
286 debug("Found SPL hand-off info %p\n", gd->spl_handoff);
292 __weak int arch_cpu_init(void)
297 __weak int mach_cpu_init(void)
302 /* Get the top of usable RAM */
303 __weak ulong board_get_usable_ram_top(ulong total_size)
305 #ifdef CONFIG_SYS_SDRAM_BASE
307 * Detect whether we have so much RAM that it goes past the end of our
308 * 32-bit address space. If so, clip the usable RAM so it doesn't.
310 if (gd->ram_top < CONFIG_SYS_SDRAM_BASE)
312 * Will wrap back to top of 32-bit space when reservations
320 static int setup_dest_addr(void)
322 debug("Monitor len: %08lX\n", gd->mon_len);
324 * Ram is setup, size stored in gd !!
326 debug("Ram size: %08lX\n", (ulong)gd->ram_size);
327 #if defined(CONFIG_SYS_MEM_TOP_HIDE)
329 * Subtract specified amount of memory to hide so that it won't
330 * get "touched" at all by U-Boot. By fixing up gd->ram_size
331 * the Linux kernel should now get passed the now "corrected"
332 * memory size and won't touch it either. This should work
333 * for arch/ppc and arch/powerpc. Only Linux board ports in
334 * arch/powerpc with bootwrapper support, that recalculate the
335 * memory size from the SDRAM controller setup will have to
338 gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
340 #ifdef CONFIG_SYS_SDRAM_BASE
341 gd->ram_base = CONFIG_SYS_SDRAM_BASE;
343 gd->ram_top = gd->ram_base + get_effective_memsize();
344 gd->ram_top = board_get_usable_ram_top(gd->mon_len);
345 gd->relocaddr = gd->ram_top;
346 debug("Ram top: %08lX\n", (ulong)gd->ram_top);
347 #if defined(CONFIG_MP) && (defined(CONFIG_MPC86xx) || defined(CONFIG_E500))
349 * We need to make sure the location we intend to put secondary core
350 * boot code is reserved and not used by any part of u-boot
352 if (gd->relocaddr > determine_mp_bootpg(NULL)) {
353 gd->relocaddr = determine_mp_bootpg(NULL);
354 debug("Reserving MP boot page to %08lx\n", gd->relocaddr);
361 /* reserve protected RAM */
362 static int reserve_pram(void)
366 reg = env_get_ulong("pram", 10, CONFIG_PRAM);
367 gd->relocaddr -= (reg << 10); /* size is in kB */
368 debug("Reserving %ldk for protected RAM at %08lx\n", reg,
372 #endif /* CONFIG_PRAM */
374 /* Round memory pointer down to next 4 kB limit */
375 static int reserve_round_4k(void)
377 gd->relocaddr &= ~(4096 - 1);
382 __weak int reserve_mmu(void)
384 #if !(CONFIG_IS_ENABLED(SYS_ICACHE_OFF) && CONFIG_IS_ENABLED(SYS_DCACHE_OFF))
385 /* reserve TLB table */
386 gd->arch.tlb_size = PGTABLE_SIZE;
387 gd->relocaddr -= gd->arch.tlb_size;
389 /* round down to next 64 kB limit */
390 gd->relocaddr &= ~(0x10000 - 1);
392 gd->arch.tlb_addr = gd->relocaddr;
393 debug("TLB table from %08lx to %08lx\n", gd->arch.tlb_addr,
394 gd->arch.tlb_addr + gd->arch.tlb_size);
396 #ifdef CONFIG_SYS_MEM_RESERVE_SECURE
398 * Record allocated tlb_addr in case gd->tlb_addr to be overwritten
399 * with location within secure ram.
401 gd->arch.tlb_allocated = gd->arch.tlb_addr;
409 static int reserve_video(void)
411 #ifdef CONFIG_DM_VIDEO
415 addr = gd->relocaddr;
416 ret = video_reserve(&addr);
419 gd->relocaddr = addr;
420 #elif defined(CONFIG_LCD)
421 # ifdef CONFIG_FB_ADDR
422 gd->fb_base = CONFIG_FB_ADDR;
424 /* reserve memory for LCD display (always full pages) */
425 gd->relocaddr = lcd_setmem(gd->relocaddr);
426 gd->fb_base = gd->relocaddr;
427 # endif /* CONFIG_FB_ADDR */
428 #elif defined(CONFIG_VIDEO) && \
429 (!defined(CONFIG_PPC)) && \
430 !defined(CONFIG_ARM) && !defined(CONFIG_X86) && \
431 !defined(CONFIG_M68K)
432 /* reserve memory for video display (always full pages) */
433 gd->relocaddr = video_setmem(gd->relocaddr);
434 gd->fb_base = gd->relocaddr;
440 static int reserve_trace(void)
443 gd->relocaddr -= CONFIG_TRACE_BUFFER_SIZE;
444 gd->trace_buff = map_sysmem(gd->relocaddr, CONFIG_TRACE_BUFFER_SIZE);
445 debug("Reserving %dk for trace data at: %08lx\n",
446 CONFIG_TRACE_BUFFER_SIZE >> 10, gd->relocaddr);
452 static int reserve_uboot(void)
454 if (!(gd->flags & GD_FLG_SKIP_RELOC)) {
456 * reserve memory for U-Boot code, data & bss
457 * round down to next 4 kB limit
459 gd->relocaddr -= gd->mon_len;
460 gd->relocaddr &= ~(4096 - 1);
461 #if defined(CONFIG_E500) || defined(CONFIG_MIPS)
462 /* round down to next 64 kB limit so that IVPR stays aligned */
463 gd->relocaddr &= ~(65536 - 1);
466 debug("Reserving %ldk for U-Boot at: %08lx\n",
467 gd->mon_len >> 10, gd->relocaddr);
470 gd->start_addr_sp = gd->relocaddr;
475 /* reserve memory for malloc() area */
476 static int reserve_malloc(void)
478 gd->start_addr_sp = gd->start_addr_sp - TOTAL_MALLOC_LEN;
479 debug("Reserving %dk for malloc() at: %08lx\n",
480 TOTAL_MALLOC_LEN >> 10, gd->start_addr_sp);
484 /* (permanently) allocate a Board Info struct */
485 static int reserve_board(void)
488 gd->start_addr_sp -= sizeof(bd_t);
489 gd->bd = (bd_t *)map_sysmem(gd->start_addr_sp, sizeof(bd_t));
490 memset(gd->bd, '\0', sizeof(bd_t));
491 debug("Reserving %zu Bytes for Board Info at: %08lx\n",
492 sizeof(bd_t), gd->start_addr_sp);
497 static int setup_machine(void)
499 #ifdef CONFIG_MACH_TYPE
500 gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
505 static int reserve_global_data(void)
507 gd->start_addr_sp -= sizeof(gd_t);
508 gd->new_gd = (gd_t *)map_sysmem(gd->start_addr_sp, sizeof(gd_t));
509 debug("Reserving %zu Bytes for Global Data at: %08lx\n",
510 sizeof(gd_t), gd->start_addr_sp);
514 static int reserve_fdt(void)
516 #ifndef CONFIG_OF_EMBED
518 * If the device tree is sitting immediately above our image then we
519 * must relocate it. If it is embedded in the data section, then it
520 * will be relocated with other data.
523 gd->fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
525 gd->start_addr_sp -= gd->fdt_size;
526 gd->new_fdt = map_sysmem(gd->start_addr_sp, gd->fdt_size);
527 debug("Reserving %lu Bytes for FDT at: %08lx\n",
528 gd->fdt_size, gd->start_addr_sp);
535 static int reserve_bootstage(void)
537 #ifdef CONFIG_BOOTSTAGE
538 int size = bootstage_get_size();
540 gd->start_addr_sp -= size;
541 gd->new_bootstage = map_sysmem(gd->start_addr_sp, size);
542 debug("Reserving %#x Bytes for bootstage at: %08lx\n", size,
549 __weak int arch_reserve_stacks(void)
554 static int reserve_stacks(void)
556 /* make stack pointer 16-byte aligned */
557 gd->start_addr_sp -= 16;
558 gd->start_addr_sp &= ~0xf;
561 * let the architecture-specific code tailor gd->start_addr_sp and
564 return arch_reserve_stacks();
567 static int reserve_bloblist(void)
569 #ifdef CONFIG_BLOBLIST
570 gd->start_addr_sp -= CONFIG_BLOBLIST_SIZE;
571 gd->new_bloblist = map_sysmem(gd->start_addr_sp, CONFIG_BLOBLIST_SIZE);
577 static int display_new_sp(void)
579 debug("New Stack Pointer is: %08lx\n", gd->start_addr_sp);
584 #if defined(CONFIG_M68K) || defined(CONFIG_MIPS) || defined(CONFIG_PPC) || \
586 static int setup_board_part1(void)
591 * Save local variables to board info struct
593 bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; /* start of memory */
594 bd->bi_memsize = gd->ram_size; /* size in bytes */
596 #ifdef CONFIG_SYS_SRAM_BASE
597 bd->bi_sramstart = CONFIG_SYS_SRAM_BASE; /* start of SRAM */
598 bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE; /* size of SRAM */
601 #if defined(CONFIG_E500) || defined(CONFIG_MPC86xx)
602 bd->bi_immr_base = CONFIG_SYS_IMMR; /* base of IMMR register */
604 #if defined(CONFIG_M68K)
605 bd->bi_mbar_base = CONFIG_SYS_MBAR; /* base of internal registers */
607 #if defined(CONFIG_MPC83xx)
608 bd->bi_immrbar = CONFIG_SYS_IMMR;
615 #if defined(CONFIG_PPC) || defined(CONFIG_M68K)
616 static int setup_board_part2(void)
620 bd->bi_intfreq = gd->cpu_clk; /* Internal Freq, in Hz */
621 bd->bi_busfreq = gd->bus_clk; /* Bus Freq, in Hz */
622 #if defined(CONFIG_CPM2)
623 bd->bi_cpmfreq = gd->arch.cpm_clk;
624 bd->bi_brgfreq = gd->arch.brg_clk;
625 bd->bi_sccfreq = gd->arch.scc_clk;
626 bd->bi_vco = gd->arch.vco_out;
627 #endif /* CONFIG_CPM2 */
628 #if defined(CONFIG_M68K) && defined(CONFIG_PCI)
629 bd->bi_pcifreq = gd->pci_clk;
631 #if defined(CONFIG_EXTRA_CLOCK)
632 bd->bi_inpfreq = gd->arch.inp_clk; /* input Freq in Hz */
633 bd->bi_vcofreq = gd->arch.vco_clk; /* vco Freq in Hz */
634 bd->bi_flbfreq = gd->arch.flb_clk; /* flexbus Freq in Hz */
642 static int init_post(void)
644 post_bootmode_init();
645 post_run(NULL, POST_ROM | post_bootmode_get(0));
651 static int reloc_fdt(void)
653 #ifndef CONFIG_OF_EMBED
654 if (gd->flags & GD_FLG_SKIP_RELOC)
657 memcpy(gd->new_fdt, gd->fdt_blob, gd->fdt_size);
658 gd->fdt_blob = gd->new_fdt;
665 static int reloc_bootstage(void)
667 #ifdef CONFIG_BOOTSTAGE
668 if (gd->flags & GD_FLG_SKIP_RELOC)
670 if (gd->new_bootstage) {
671 int size = bootstage_get_size();
673 debug("Copying bootstage from %p to %p, size %x\n",
674 gd->bootstage, gd->new_bootstage, size);
675 memcpy(gd->new_bootstage, gd->bootstage, size);
676 gd->bootstage = gd->new_bootstage;
683 static int reloc_bloblist(void)
685 #ifdef CONFIG_BLOBLIST
686 if (gd->flags & GD_FLG_SKIP_RELOC)
688 if (gd->new_bloblist) {
689 int size = CONFIG_BLOBLIST_SIZE;
691 debug("Copying bloblist from %p to %p, size %x\n",
692 gd->bloblist, gd->new_bloblist, size);
693 memcpy(gd->new_bloblist, gd->bloblist, size);
694 gd->bloblist = gd->new_bloblist;
701 static int setup_reloc(void)
703 if (gd->flags & GD_FLG_SKIP_RELOC) {
704 debug("Skipping relocation due to flag\n");
708 #ifdef CONFIG_SYS_TEXT_BASE
710 gd->reloc_off = gd->relocaddr - (unsigned long)__image_copy_start;
711 #elif defined(CONFIG_M68K)
713 * On all ColdFire arch cpu, monitor code starts always
714 * just after the default vector table location, so at 0x400
716 gd->reloc_off = gd->relocaddr - (CONFIG_SYS_TEXT_BASE + 0x400);
717 #elif !defined(CONFIG_SANDBOX)
718 gd->reloc_off = gd->relocaddr - CONFIG_SYS_TEXT_BASE;
721 memcpy(gd->new_gd, (char *)gd, sizeof(gd_t));
723 debug("Relocation Offset is: %08lx\n", gd->reloc_off);
724 debug("Relocating to %08lx, new gd at %08lx, sp at %08lx\n",
725 gd->relocaddr, (ulong)map_to_sysmem(gd->new_gd),
731 #ifdef CONFIG_OF_BOARD_FIXUP
732 static int fix_fdt(void)
734 return board_fix_fdt((void *)gd->fdt_blob);
738 /* ARM calls relocate_code from its crt0.S */
739 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) && \
740 !CONFIG_IS_ENABLED(X86_64)
742 static int jump_to_copy(void)
744 if (gd->flags & GD_FLG_SKIP_RELOC)
747 * x86 is special, but in a nice way. It uses a trampoline which
748 * enables the dcache if possible.
750 * For now, other archs use relocate_code(), which is implemented
751 * similarly for all archs. When we do generic relocation, hopefully
752 * we can make all archs enable the dcache prior to relocation.
754 #if defined(CONFIG_X86) || defined(CONFIG_ARC)
756 * SDRAM and console are now initialised. The final stack can now
757 * be setup in SDRAM. Code execution will continue in Flash, but
758 * with the stack in SDRAM and Global Data in temporary memory
761 arch_setup_gd(gd->new_gd);
762 board_init_f_r_trampoline(gd->start_addr_sp);
764 relocate_code(gd->start_addr_sp, gd->new_gd, gd->relocaddr);
771 /* Record the board_init_f() bootstage (after arch_cpu_init()) */
772 static int initf_bootstage(void)
774 bool from_spl = IS_ENABLED(CONFIG_SPL_BOOTSTAGE) &&
775 IS_ENABLED(CONFIG_BOOTSTAGE_STASH);
778 ret = bootstage_init(!from_spl);
782 const void *stash = map_sysmem(CONFIG_BOOTSTAGE_STASH_ADDR,
783 CONFIG_BOOTSTAGE_STASH_SIZE);
785 ret = bootstage_unstash(stash, CONFIG_BOOTSTAGE_STASH_SIZE);
786 if (ret && ret != -ENOENT) {
787 debug("Failed to unstash bootstage: err=%d\n", ret);
792 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f");
797 static int initf_console_record(void)
799 #if defined(CONFIG_CONSOLE_RECORD) && CONFIG_VAL(SYS_MALLOC_F_LEN)
800 return console_record_init();
806 static int initf_dm(void)
808 #if defined(CONFIG_DM) && CONFIG_VAL(SYS_MALLOC_F_LEN)
811 bootstage_start(BOOTSTATE_ID_ACCUM_DM_F, "dm_f");
812 ret = dm_init_and_scan(true);
813 bootstage_accum(BOOTSTATE_ID_ACCUM_DM_F);
817 #ifdef CONFIG_TIMER_EARLY
818 ret = dm_timer_init();
826 /* Architecture-specific memory reservation */
827 __weak int reserve_arch(void)
832 __weak int arch_cpu_init_dm(void)
837 static const init_fnc_t init_sequence_f[] = {
839 #ifdef CONFIG_OF_CONTROL
847 initf_bootstage, /* uses its own timer, so does not need DM */
848 #ifdef CONFIG_BLOBLIST
852 initf_console_record,
853 #if defined(CONFIG_HAVE_FSP)
856 arch_cpu_init, /* basic arch cpu dependent setup */
857 mach_cpu_init, /* SoC/machine dependent CPU setup */
860 #if defined(CONFIG_BOARD_EARLY_INIT_F)
863 #if defined(CONFIG_PPC) || defined(CONFIG_SYS_FSL_CLK) || defined(CONFIG_M68K)
864 /* get CPU and bus clocks according to the environment variable */
865 get_clocks, /* get CPU and bus clocks (etc.) */
867 #if !defined(CONFIG_M68K)
868 timer_init, /* initialize timer */
870 #if defined(CONFIG_BOARD_POSTCLK_INIT)
873 env_init, /* initialize environment */
874 init_baud_rate, /* initialze baudrate settings */
875 serial_init, /* serial communications setup */
876 console_init_f, /* stage 1 init of console */
877 display_options, /* say that we are here */
878 display_text_info, /* show debugging info if required */
879 #if defined(CONFIG_PPC) || defined(CONFIG_SH) || defined(CONFIG_X86)
882 #if defined(CONFIG_SYSRESET)
885 #if defined(CONFIG_DISPLAY_CPUINFO)
886 print_cpuinfo, /* display cpu info (and speed) */
888 #if defined(CONFIG_DTB_RESELECT)
891 #if defined(CONFIG_DISPLAY_BOARDINFO)
894 INIT_FUNC_WATCHDOG_INIT
895 #if defined(CONFIG_MISC_INIT_F)
898 INIT_FUNC_WATCHDOG_RESET
899 #if defined(CONFIG_SYS_I2C)
902 #if defined(CONFIG_VID) && !defined(CONFIG_SPL)
906 dram_init, /* configure available RAM banks */
910 INIT_FUNC_WATCHDOG_RESET
911 #if defined(CONFIG_SYS_DRAM_TEST)
913 #endif /* CONFIG_SYS_DRAM_TEST */
914 INIT_FUNC_WATCHDOG_RESET
919 INIT_FUNC_WATCHDOG_RESET
921 * Now that we have DRAM mapped and working, we can
922 * relocate the code and continue running from DRAM.
924 * Reserve memory at end of RAM for (top down in that order):
925 * - area that won't get touched by U-Boot and Linux (optional)
926 * - kernel log buffer
930 * - board info struct
954 #if defined(CONFIG_M68K) || defined(CONFIG_MIPS) || defined(CONFIG_PPC) || \
958 #if defined(CONFIG_PPC) || defined(CONFIG_M68K)
959 INIT_FUNC_WATCHDOG_RESET
963 #ifdef CONFIG_OF_BOARD_FIXUP
966 INIT_FUNC_WATCHDOG_RESET
971 #if defined(CONFIG_X86) || defined(CONFIG_ARC)
976 #if defined(CONFIG_XTENSA)
979 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) && \
980 !CONFIG_IS_ENABLED(X86_64)
986 void board_init_f(ulong boot_flags)
988 gd->flags = boot_flags;
989 gd->have_console = 0;
991 if (initcall_run_list(init_sequence_f))
994 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) && \
995 !defined(CONFIG_EFI_APP) && !CONFIG_IS_ENABLED(X86_64) && \
997 /* NOTREACHED - jump_to_copy() does not return */
1002 #if defined(CONFIG_X86) || defined(CONFIG_ARC)
1004 * For now this code is only used on x86.
1006 * init_sequence_f_r is the list of init functions which are run when
1007 * U-Boot is executing from Flash with a semi-limited 'C' environment.
1008 * The following limitations must be considered when implementing an
1010 * - 'static' variables are read-only
1011 * - Global Data (gd->xxx) is read/write
1013 * The '_f_r' sequence must, as a minimum, copy U-Boot to RAM (if
1014 * supported). It _should_, if possible, copy global data to RAM and
1015 * initialise the CPU caches (to speed up the relocation process)
1017 * NOTE: At present only x86 uses this route, but it is intended that
1018 * all archs will move to this when generic relocation is implemented.
1020 static const init_fnc_t init_sequence_f_r[] = {
1021 #if !CONFIG_IS_ENABLED(X86_64)
1028 void board_init_f_r(void)
1030 if (initcall_run_list(init_sequence_f_r))
1034 * The pre-relocation drivers may be using memory that has now gone
1035 * away. Mark serial as unavailable - this will fall back to the debug
1036 * UART if available.
1038 * Do the same with log drivers since the memory may not be available.
1040 gd->flags &= ~(GD_FLG_SERIAL_READY | GD_FLG_LOG_READY);
1046 * U-Boot has been copied into SDRAM, the BSS has been cleared etc.
1047 * Transfer execution from Flash to RAM by calculating the address
1048 * of the in-RAM copy of board_init_r() and calling it
1050 (board_init_r + gd->reloc_off)((gd_t *)gd, gd->relocaddr);
1052 /* NOTREACHED - board_init_r() does not return */
1055 #endif /* CONFIG_X86 */