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>
16 #include <environment.h>
27 #include <status_led.h>
33 #ifdef CONFIG_MACH_TYPE
34 #include <asm/mach-types.h>
36 #if defined(CONFIG_MP) && defined(CONFIG_PPC)
40 #include <asm/sections.h>
42 #include <linux/errno.h>
45 * Pointer to initial global data area
47 * Here we initialize it if needed.
49 #ifdef XTRN_DECLARE_GLOBAL_DATA_PTR
50 #undef XTRN_DECLARE_GLOBAL_DATA_PTR
51 #define XTRN_DECLARE_GLOBAL_DATA_PTR /* empty = allocate here */
52 DECLARE_GLOBAL_DATA_PTR = (gd_t *)(CONFIG_SYS_INIT_GD_ADDR);
54 DECLARE_GLOBAL_DATA_PTR;
58 * TODO(sjg@chromium.org): IMO this code should be
59 * refactored to a single function, something like:
61 * void led_set_state(enum led_colour_t colour, int on);
63 /************************************************************************
64 * Coloured LED functionality
65 ************************************************************************
66 * May be supplied by boards if desired
68 __weak void coloured_LED_init(void) {}
69 __weak void red_led_on(void) {}
70 __weak void red_led_off(void) {}
71 __weak void green_led_on(void) {}
72 __weak void green_led_off(void) {}
73 __weak void yellow_led_on(void) {}
74 __weak void yellow_led_off(void) {}
75 __weak void blue_led_on(void) {}
76 __weak void blue_led_off(void) {}
79 * Why is gd allocated a register? Prior to reloc it might be better to
80 * just pass it around to each function in this file?
82 * After reloc one could argue that it is hardly used and doesn't need
83 * to be in a register. Or if it is it should perhaps hold pointers to all
84 * global data for all modules, so that post-reloc we can avoid the massive
85 * literal pool we get on ARM. Or perhaps just encourage each module to use
89 #if defined(CONFIG_WATCHDOG) || defined(CONFIG_HW_WATCHDOG)
90 static int init_func_watchdog_init(void)
92 # if defined(CONFIG_HW_WATCHDOG) && \
93 (defined(CONFIG_M68K) || defined(CONFIG_MICROBLAZE) || \
94 defined(CONFIG_SH) || defined(CONFIG_AT91SAM9_WATCHDOG) || \
95 defined(CONFIG_DESIGNWARE_WATCHDOG) || \
96 defined(CONFIG_IMX_WATCHDOG))
98 puts(" Watchdog enabled\n");
105 int init_func_watchdog_reset(void)
111 #endif /* CONFIG_WATCHDOG */
113 __weak void board_add_ram_info(int use_default)
115 /* please define platform specific board_add_ram_info() */
118 static int init_baud_rate(void)
120 gd->baudrate = env_get_ulong("baudrate", 10, CONFIG_BAUDRATE);
124 static int display_text_info(void)
126 #if !defined(CONFIG_SANDBOX) && !defined(CONFIG_EFI_APP)
127 ulong bss_start, bss_end, text_base;
129 bss_start = (ulong)&__bss_start;
130 bss_end = (ulong)&__bss_end;
132 #ifdef CONFIG_SYS_TEXT_BASE
133 text_base = CONFIG_SYS_TEXT_BASE;
135 text_base = CONFIG_SYS_MONITOR_BASE;
138 debug("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
139 text_base, bss_start, bss_end);
145 #ifdef CONFIG_SYSRESET
146 static int print_resetinfo(void)
152 ret = uclass_first_device_err(UCLASS_SYSRESET, &dev);
154 debug("%s: No sysreset device found (error: %d)\n",
156 /* Not all boards have sysreset drivers available during early
157 * boot, so don't fail if one can't be found.
162 if (!sysreset_get_status(dev, status, sizeof(status)))
163 printf("%s", status);
169 #if defined(CONFIG_DISPLAY_CPUINFO) && CONFIG_IS_ENABLED(CPU)
170 static int print_cpuinfo(void)
176 ret = uclass_first_device_err(UCLASS_CPU, &dev);
178 debug("%s: Could not get CPU device (err = %d)\n",
183 ret = cpu_get_desc(dev, desc, sizeof(desc));
185 debug("%s: Could not get CPU description (err = %d)\n",
190 printf("CPU: %s\n", desc);
196 static int announce_dram_init(void)
202 static int show_dram_config(void)
204 unsigned long long size;
206 #ifdef CONFIG_NR_DRAM_BANKS
209 debug("\nRAM Configuration:\n");
210 for (i = size = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
211 size += gd->bd->bi_dram[i].size;
212 debug("Bank #%d: %llx ", i,
213 (unsigned long long)(gd->bd->bi_dram[i].start));
215 print_size(gd->bd->bi_dram[i].size, "\n");
223 print_size(size, "");
224 board_add_ram_info(0);
230 __weak int dram_init_banksize(void)
232 #if defined(CONFIG_NR_DRAM_BANKS) && defined(CONFIG_SYS_SDRAM_BASE)
233 gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
234 gd->bd->bi_dram[0].size = get_effective_memsize();
240 #if defined(CONFIG_SYS_I2C)
241 static int init_func_i2c(void)
244 #ifdef CONFIG_SYS_I2C
247 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
254 #if defined(CONFIG_VID)
255 __weak int init_func_vid(void)
261 #if defined(CONFIG_HARD_SPI)
262 static int init_func_spi(void)
271 static int setup_mon_len(void)
273 #if defined(__ARM__) || defined(__MICROBLAZE__)
274 gd->mon_len = (ulong)&__bss_end - (ulong)_start;
275 #elif defined(CONFIG_SANDBOX) || defined(CONFIG_EFI_APP)
276 gd->mon_len = (ulong)&_end - (ulong)_init;
277 #elif defined(CONFIG_NIOS2) || defined(CONFIG_XTENSA)
278 gd->mon_len = CONFIG_SYS_MONITOR_LEN;
279 #elif defined(CONFIG_NDS32) || defined(CONFIG_SH) || defined(CONFIG_RISCV)
280 gd->mon_len = (ulong)(&__bss_end) - (ulong)(&_start);
281 #elif defined(CONFIG_SYS_MONITOR_BASE)
282 /* TODO: use (ulong)&__bss_end - (ulong)&__text_start; ? */
283 gd->mon_len = (ulong)&__bss_end - CONFIG_SYS_MONITOR_BASE;
288 __weak int arch_cpu_init(void)
293 __weak int mach_cpu_init(void)
298 /* Get the top of usable RAM */
299 __weak ulong board_get_usable_ram_top(ulong total_size)
301 #ifdef CONFIG_SYS_SDRAM_BASE
303 * Detect whether we have so much RAM that it goes past the end of our
304 * 32-bit address space. If so, clip the usable RAM so it doesn't.
306 if (gd->ram_top < CONFIG_SYS_SDRAM_BASE)
308 * Will wrap back to top of 32-bit space when reservations
316 static int setup_dest_addr(void)
318 debug("Monitor len: %08lX\n", gd->mon_len);
320 * Ram is setup, size stored in gd !!
322 debug("Ram size: %08lX\n", (ulong)gd->ram_size);
323 #if defined(CONFIG_SYS_MEM_TOP_HIDE)
325 * Subtract specified amount of memory to hide so that it won't
326 * get "touched" at all by U-Boot. By fixing up gd->ram_size
327 * the Linux kernel should now get passed the now "corrected"
328 * memory size and won't touch it either. This should work
329 * for arch/ppc and arch/powerpc. Only Linux board ports in
330 * arch/powerpc with bootwrapper support, that recalculate the
331 * memory size from the SDRAM controller setup will have to
334 gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
336 #ifdef CONFIG_SYS_SDRAM_BASE
337 gd->ram_base = CONFIG_SYS_SDRAM_BASE;
339 gd->ram_top = gd->ram_base + get_effective_memsize();
340 gd->ram_top = board_get_usable_ram_top(gd->mon_len);
341 gd->relocaddr = gd->ram_top;
342 debug("Ram top: %08lX\n", (ulong)gd->ram_top);
343 #if defined(CONFIG_MP) && (defined(CONFIG_MPC86xx) || defined(CONFIG_E500))
345 * We need to make sure the location we intend to put secondary core
346 * boot code is reserved and not used by any part of u-boot
348 if (gd->relocaddr > determine_mp_bootpg(NULL)) {
349 gd->relocaddr = determine_mp_bootpg(NULL);
350 debug("Reserving MP boot page to %08lx\n", gd->relocaddr);
357 /* reserve protected RAM */
358 static int reserve_pram(void)
362 reg = env_get_ulong("pram", 10, CONFIG_PRAM);
363 gd->relocaddr -= (reg << 10); /* size is in kB */
364 debug("Reserving %ldk for protected RAM at %08lx\n", reg,
368 #endif /* CONFIG_PRAM */
370 /* Round memory pointer down to next 4 kB limit */
371 static int reserve_round_4k(void)
373 gd->relocaddr &= ~(4096 - 1);
378 __weak int reserve_mmu(void)
380 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
381 /* reserve TLB table */
382 gd->arch.tlb_size = PGTABLE_SIZE;
383 gd->relocaddr -= gd->arch.tlb_size;
385 /* round down to next 64 kB limit */
386 gd->relocaddr &= ~(0x10000 - 1);
388 gd->arch.tlb_addr = gd->relocaddr;
389 debug("TLB table from %08lx to %08lx\n", gd->arch.tlb_addr,
390 gd->arch.tlb_addr + gd->arch.tlb_size);
392 #ifdef CONFIG_SYS_MEM_RESERVE_SECURE
394 * Record allocated tlb_addr in case gd->tlb_addr to be overwritten
395 * with location within secure ram.
397 gd->arch.tlb_allocated = gd->arch.tlb_addr;
405 static int reserve_video(void)
407 #ifdef CONFIG_DM_VIDEO
411 addr = gd->relocaddr;
412 ret = video_reserve(&addr);
415 gd->relocaddr = addr;
416 #elif defined(CONFIG_LCD)
417 # ifdef CONFIG_FB_ADDR
418 gd->fb_base = CONFIG_FB_ADDR;
420 /* reserve memory for LCD display (always full pages) */
421 gd->relocaddr = lcd_setmem(gd->relocaddr);
422 gd->fb_base = gd->relocaddr;
423 # endif /* CONFIG_FB_ADDR */
424 #elif defined(CONFIG_VIDEO) && \
425 (!defined(CONFIG_PPC)) && \
426 !defined(CONFIG_ARM) && !defined(CONFIG_X86) && \
427 !defined(CONFIG_M68K)
428 /* reserve memory for video display (always full pages) */
429 gd->relocaddr = video_setmem(gd->relocaddr);
430 gd->fb_base = gd->relocaddr;
436 static int reserve_trace(void)
439 gd->relocaddr -= CONFIG_TRACE_BUFFER_SIZE;
440 gd->trace_buff = map_sysmem(gd->relocaddr, CONFIG_TRACE_BUFFER_SIZE);
441 debug("Reserving %dk for trace data at: %08lx\n",
442 CONFIG_TRACE_BUFFER_SIZE >> 10, gd->relocaddr);
448 static int reserve_uboot(void)
450 if (!(gd->flags & GD_FLG_SKIP_RELOC)) {
452 * reserve memory for U-Boot code, data & bss
453 * round down to next 4 kB limit
455 gd->relocaddr -= gd->mon_len;
456 gd->relocaddr &= ~(4096 - 1);
457 #if defined(CONFIG_E500) || defined(CONFIG_MIPS)
458 /* round down to next 64 kB limit so that IVPR stays aligned */
459 gd->relocaddr &= ~(65536 - 1);
462 debug("Reserving %ldk for U-Boot at: %08lx\n",
463 gd->mon_len >> 10, gd->relocaddr);
466 gd->start_addr_sp = gd->relocaddr;
471 /* reserve memory for malloc() area */
472 static int reserve_malloc(void)
474 gd->start_addr_sp = gd->start_addr_sp - TOTAL_MALLOC_LEN;
475 debug("Reserving %dk for malloc() at: %08lx\n",
476 TOTAL_MALLOC_LEN >> 10, gd->start_addr_sp);
480 /* (permanently) allocate a Board Info struct */
481 static int reserve_board(void)
484 gd->start_addr_sp -= sizeof(bd_t);
485 gd->bd = (bd_t *)map_sysmem(gd->start_addr_sp, sizeof(bd_t));
486 memset(gd->bd, '\0', sizeof(bd_t));
487 debug("Reserving %zu Bytes for Board Info at: %08lx\n",
488 sizeof(bd_t), gd->start_addr_sp);
493 static int setup_machine(void)
495 #ifdef CONFIG_MACH_TYPE
496 gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
501 static int reserve_global_data(void)
503 gd->start_addr_sp -= sizeof(gd_t);
504 gd->new_gd = (gd_t *)map_sysmem(gd->start_addr_sp, sizeof(gd_t));
505 debug("Reserving %zu Bytes for Global Data at: %08lx\n",
506 sizeof(gd_t), gd->start_addr_sp);
510 static int reserve_fdt(void)
512 #ifndef CONFIG_OF_EMBED
514 * If the device tree is sitting immediately above our image then we
515 * must relocate it. If it is embedded in the data section, then it
516 * will be relocated with other data.
519 gd->fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
521 gd->start_addr_sp -= gd->fdt_size;
522 gd->new_fdt = map_sysmem(gd->start_addr_sp, gd->fdt_size);
523 debug("Reserving %lu Bytes for FDT at: %08lx\n",
524 gd->fdt_size, gd->start_addr_sp);
531 static int reserve_bootstage(void)
533 #ifdef CONFIG_BOOTSTAGE
534 int size = bootstage_get_size();
536 gd->start_addr_sp -= size;
537 gd->new_bootstage = map_sysmem(gd->start_addr_sp, size);
538 debug("Reserving %#x Bytes for bootstage at: %08lx\n", size,
545 __weak int arch_reserve_stacks(void)
550 static int reserve_stacks(void)
552 /* make stack pointer 16-byte aligned */
553 gd->start_addr_sp -= 16;
554 gd->start_addr_sp &= ~0xf;
557 * let the architecture-specific code tailor gd->start_addr_sp and
560 return arch_reserve_stacks();
563 static int display_new_sp(void)
565 debug("New Stack Pointer is: %08lx\n", gd->start_addr_sp);
570 #if defined(CONFIG_M68K) || defined(CONFIG_MIPS) || defined(CONFIG_PPC) || \
572 static int setup_board_part1(void)
577 * Save local variables to board info struct
579 bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; /* start of memory */
580 bd->bi_memsize = gd->ram_size; /* size in bytes */
582 #ifdef CONFIG_SYS_SRAM_BASE
583 bd->bi_sramstart = CONFIG_SYS_SRAM_BASE; /* start of SRAM */
584 bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE; /* size of SRAM */
587 #if defined(CONFIG_E500) || defined(CONFIG_MPC86xx)
588 bd->bi_immr_base = CONFIG_SYS_IMMR; /* base of IMMR register */
590 #if defined(CONFIG_M68K)
591 bd->bi_mbar_base = CONFIG_SYS_MBAR; /* base of internal registers */
593 #if defined(CONFIG_MPC83xx)
594 bd->bi_immrbar = CONFIG_SYS_IMMR;
601 #if defined(CONFIG_PPC) || defined(CONFIG_M68K)
602 static int setup_board_part2(void)
606 bd->bi_intfreq = gd->cpu_clk; /* Internal Freq, in Hz */
607 bd->bi_busfreq = gd->bus_clk; /* Bus Freq, in Hz */
608 #if defined(CONFIG_CPM2)
609 bd->bi_cpmfreq = gd->arch.cpm_clk;
610 bd->bi_brgfreq = gd->arch.brg_clk;
611 bd->bi_sccfreq = gd->arch.scc_clk;
612 bd->bi_vco = gd->arch.vco_out;
613 #endif /* CONFIG_CPM2 */
614 #if defined(CONFIG_M68K) && defined(CONFIG_PCI)
615 bd->bi_pcifreq = gd->pci_clk;
617 #if defined(CONFIG_EXTRA_CLOCK)
618 bd->bi_inpfreq = gd->arch.inp_clk; /* input Freq in Hz */
619 bd->bi_vcofreq = gd->arch.vco_clk; /* vco Freq in Hz */
620 bd->bi_flbfreq = gd->arch.flb_clk; /* flexbus Freq in Hz */
628 static int init_post(void)
630 post_bootmode_init();
631 post_run(NULL, POST_ROM | post_bootmode_get(0));
637 static int reloc_fdt(void)
639 #ifndef CONFIG_OF_EMBED
640 if (gd->flags & GD_FLG_SKIP_RELOC)
643 memcpy(gd->new_fdt, gd->fdt_blob, gd->fdt_size);
644 gd->fdt_blob = gd->new_fdt;
651 static int reloc_bootstage(void)
653 #ifdef CONFIG_BOOTSTAGE
654 if (gd->flags & GD_FLG_SKIP_RELOC)
656 if (gd->new_bootstage) {
657 int size = bootstage_get_size();
659 debug("Copying bootstage from %p to %p, size %x\n",
660 gd->bootstage, gd->new_bootstage, size);
661 memcpy(gd->new_bootstage, gd->bootstage, size);
662 gd->bootstage = gd->new_bootstage;
669 static int setup_reloc(void)
671 if (gd->flags & GD_FLG_SKIP_RELOC) {
672 debug("Skipping relocation due to flag\n");
676 #ifdef CONFIG_SYS_TEXT_BASE
678 gd->reloc_off = gd->relocaddr - (unsigned long)__image_copy_start;
679 #elif defined(CONFIG_M68K)
681 * On all ColdFire arch cpu, monitor code starts always
682 * just after the default vector table location, so at 0x400
684 gd->reloc_off = gd->relocaddr - (CONFIG_SYS_TEXT_BASE + 0x400);
686 gd->reloc_off = gd->relocaddr - CONFIG_SYS_TEXT_BASE;
689 memcpy(gd->new_gd, (char *)gd, sizeof(gd_t));
691 debug("Relocation Offset is: %08lx\n", gd->reloc_off);
692 debug("Relocating to %08lx, new gd at %08lx, sp at %08lx\n",
693 gd->relocaddr, (ulong)map_to_sysmem(gd->new_gd),
699 #ifdef CONFIG_OF_BOARD_FIXUP
700 static int fix_fdt(void)
702 return board_fix_fdt((void *)gd->fdt_blob);
706 /* ARM calls relocate_code from its crt0.S */
707 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) && \
708 !CONFIG_IS_ENABLED(X86_64)
710 static int jump_to_copy(void)
712 if (gd->flags & GD_FLG_SKIP_RELOC)
715 * x86 is special, but in a nice way. It uses a trampoline which
716 * enables the dcache if possible.
718 * For now, other archs use relocate_code(), which is implemented
719 * similarly for all archs. When we do generic relocation, hopefully
720 * we can make all archs enable the dcache prior to relocation.
722 #if defined(CONFIG_X86) || defined(CONFIG_ARC)
724 * SDRAM and console are now initialised. The final stack can now
725 * be setup in SDRAM. Code execution will continue in Flash, but
726 * with the stack in SDRAM and Global Data in temporary memory
729 arch_setup_gd(gd->new_gd);
730 board_init_f_r_trampoline(gd->start_addr_sp);
732 relocate_code(gd->start_addr_sp, gd->new_gd, gd->relocaddr);
739 /* Record the board_init_f() bootstage (after arch_cpu_init()) */
740 static int initf_bootstage(void)
742 bool from_spl = IS_ENABLED(CONFIG_SPL_BOOTSTAGE) &&
743 IS_ENABLED(CONFIG_BOOTSTAGE_STASH);
746 ret = bootstage_init(!from_spl);
750 const void *stash = map_sysmem(CONFIG_BOOTSTAGE_STASH_ADDR,
751 CONFIG_BOOTSTAGE_STASH_SIZE);
753 ret = bootstage_unstash(stash, CONFIG_BOOTSTAGE_STASH_SIZE);
754 if (ret && ret != -ENOENT) {
755 debug("Failed to unstash bootstage: err=%d\n", ret);
760 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f");
765 static int initf_console_record(void)
767 #if defined(CONFIG_CONSOLE_RECORD) && CONFIG_VAL(SYS_MALLOC_F_LEN)
768 return console_record_init();
774 static int initf_dm(void)
776 #if defined(CONFIG_DM) && CONFIG_VAL(SYS_MALLOC_F_LEN)
779 bootstage_start(BOOTSTATE_ID_ACCUM_DM_F, "dm_f");
780 ret = dm_init_and_scan(true);
781 bootstage_accum(BOOTSTATE_ID_ACCUM_DM_F);
785 #ifdef CONFIG_TIMER_EARLY
786 ret = dm_timer_init();
794 /* Architecture-specific memory reservation */
795 __weak int reserve_arch(void)
800 __weak int arch_cpu_init_dm(void)
805 static const init_fnc_t init_sequence_f[] = {
807 #ifdef CONFIG_OF_CONTROL
815 initf_bootstage, /* uses its own timer, so does not need DM */
816 initf_console_record,
817 #if defined(CONFIG_HAVE_FSP)
820 arch_cpu_init, /* basic arch cpu dependent setup */
821 mach_cpu_init, /* SoC/machine dependent CPU setup */
824 #if defined(CONFIG_BOARD_EARLY_INIT_F)
827 #if defined(CONFIG_PPC) || defined(CONFIG_SYS_FSL_CLK) || defined(CONFIG_M68K)
828 /* get CPU and bus clocks according to the environment variable */
829 get_clocks, /* get CPU and bus clocks (etc.) */
831 #if !defined(CONFIG_M68K)
832 timer_init, /* initialize timer */
834 #if defined(CONFIG_BOARD_POSTCLK_INIT)
837 env_init, /* initialize environment */
838 init_baud_rate, /* initialze baudrate settings */
839 serial_init, /* serial communications setup */
840 console_init_f, /* stage 1 init of console */
841 display_options, /* say that we are here */
842 display_text_info, /* show debugging info if required */
843 #if defined(CONFIG_PPC) || defined(CONFIG_SH) || defined(CONFIG_X86)
846 #if defined(CONFIG_SYSRESET)
849 #if defined(CONFIG_DISPLAY_CPUINFO)
850 print_cpuinfo, /* display cpu info (and speed) */
852 #if defined(CONFIG_DTB_RESELECT)
855 #if defined(CONFIG_DISPLAY_BOARDINFO)
858 INIT_FUNC_WATCHDOG_INIT
859 #if defined(CONFIG_MISC_INIT_F)
862 INIT_FUNC_WATCHDOG_RESET
863 #if defined(CONFIG_SYS_I2C)
866 #if defined(CONFIG_VID) && !defined(CONFIG_SPL)
869 #if defined(CONFIG_HARD_SPI)
873 dram_init, /* configure available RAM banks */
877 INIT_FUNC_WATCHDOG_RESET
878 #if defined(CONFIG_SYS_DRAM_TEST)
880 #endif /* CONFIG_SYS_DRAM_TEST */
881 INIT_FUNC_WATCHDOG_RESET
886 INIT_FUNC_WATCHDOG_RESET
888 * Now that we have DRAM mapped and working, we can
889 * relocate the code and continue running from DRAM.
891 * Reserve memory at end of RAM for (top down in that order):
892 * - area that won't get touched by U-Boot and Linux (optional)
893 * - kernel log buffer
897 * - board info struct
920 #if defined(CONFIG_M68K) || defined(CONFIG_MIPS) || defined(CONFIG_PPC) || \
924 #if defined(CONFIG_PPC) || defined(CONFIG_M68K)
925 INIT_FUNC_WATCHDOG_RESET
929 #ifdef CONFIG_OF_BOARD_FIXUP
932 INIT_FUNC_WATCHDOG_RESET
936 #if defined(CONFIG_X86) || defined(CONFIG_ARC)
941 #if defined(CONFIG_XTENSA)
944 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) && \
945 !CONFIG_IS_ENABLED(X86_64)
951 void board_init_f(ulong boot_flags)
953 gd->flags = boot_flags;
954 gd->have_console = 0;
956 if (initcall_run_list(init_sequence_f))
959 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) && \
960 !defined(CONFIG_EFI_APP) && !CONFIG_IS_ENABLED(X86_64) && \
962 /* NOTREACHED - jump_to_copy() does not return */
967 #if defined(CONFIG_X86) || defined(CONFIG_ARC)
969 * For now this code is only used on x86.
971 * init_sequence_f_r is the list of init functions which are run when
972 * U-Boot is executing from Flash with a semi-limited 'C' environment.
973 * The following limitations must be considered when implementing an
975 * - 'static' variables are read-only
976 * - Global Data (gd->xxx) is read/write
978 * The '_f_r' sequence must, as a minimum, copy U-Boot to RAM (if
979 * supported). It _should_, if possible, copy global data to RAM and
980 * initialise the CPU caches (to speed up the relocation process)
982 * NOTE: At present only x86 uses this route, but it is intended that
983 * all archs will move to this when generic relocation is implemented.
985 static const init_fnc_t init_sequence_f_r[] = {
986 #if !CONFIG_IS_ENABLED(X86_64)
993 void board_init_f_r(void)
995 if (initcall_run_list(init_sequence_f_r))
999 * The pre-relocation drivers may be using memory that has now gone
1000 * away. Mark serial as unavailable - this will fall back to the debug
1001 * UART if available.
1003 * Do the same with log drivers since the memory may not be available.
1005 gd->flags &= ~(GD_FLG_SERIAL_READY | GD_FLG_LOG_READY);
1011 * U-Boot has been copied into SDRAM, the BSS has been cleared etc.
1012 * Transfer execution from Flash to RAM by calculating the address
1013 * of the in-RAM copy of board_init_r() and calling it
1015 (board_init_r + gd->reloc_off)((gd_t *)gd, gd->relocaddr);
1017 /* NOTREACHED - board_init_r() does not return */
1020 #endif /* CONFIG_X86 */