2 * Copyright (c) 2011 The Chromium OS Authors.
3 * (C) Copyright 2002-2006
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
7 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
8 * Marius Groeger <mgroeger@sysgo.de>
10 * SPDX-License-Identifier: GPL-2.0+
14 #include <linux/compiler.h>
17 #include <environment.h>
21 #if defined(CONFIG_CMD_IDE)
30 /* TODO: Can we move these into arch/ headers? */
40 #if defined(CONFIG_MP) && (defined(CONFIG_MPC86xx) || defined(CONFIG_E500))
47 #include <status_led.h>
52 #include <linux/errno.h>
54 #include <asm/sections.h>
55 #if defined(CONFIG_X86) || defined(CONFIG_ARC)
56 #include <asm/init_helpers.h>
58 #if defined(CONFIG_X86) || defined(CONFIG_ARC) || defined(CONFIG_XTENSA)
59 #include <asm/relocate.h>
62 #include <linux/compiler.h>
65 * Pointer to initial global data area
67 * Here we initialize it if needed.
69 #ifdef XTRN_DECLARE_GLOBAL_DATA_PTR
70 #undef XTRN_DECLARE_GLOBAL_DATA_PTR
71 #define XTRN_DECLARE_GLOBAL_DATA_PTR /* empty = allocate here */
72 DECLARE_GLOBAL_DATA_PTR = (gd_t *) (CONFIG_SYS_INIT_GD_ADDR);
74 DECLARE_GLOBAL_DATA_PTR;
78 * TODO(sjg@chromium.org): IMO this code should be
79 * refactored to a single function, something like:
81 * void led_set_state(enum led_colour_t colour, int on);
83 /************************************************************************
84 * Coloured LED functionality
85 ************************************************************************
86 * May be supplied by boards if desired
88 __weak void coloured_LED_init(void) {}
89 __weak void red_led_on(void) {}
90 __weak void red_led_off(void) {}
91 __weak void green_led_on(void) {}
92 __weak void green_led_off(void) {}
93 __weak void yellow_led_on(void) {}
94 __weak void yellow_led_off(void) {}
95 __weak void blue_led_on(void) {}
96 __weak void blue_led_off(void) {}
99 * Why is gd allocated a register? Prior to reloc it might be better to
100 * just pass it around to each function in this file?
102 * After reloc one could argue that it is hardly used and doesn't need
103 * to be in a register. Or if it is it should perhaps hold pointers to all
104 * global data for all modules, so that post-reloc we can avoid the massive
105 * literal pool we get on ARM. Or perhaps just encourage each module to use
110 * Could the CONFIG_SPL_BUILD infection become a flag in gd?
113 #if defined(CONFIG_WATCHDOG) || defined(CONFIG_HW_WATCHDOG)
114 static int init_func_watchdog_init(void)
116 # if defined(CONFIG_HW_WATCHDOG) && \
117 (defined(CONFIG_M68K) || defined(CONFIG_MICROBLAZE) || \
118 defined(CONFIG_SH) || defined(CONFIG_AT91SAM9_WATCHDOG) || \
119 defined(CONFIG_DESIGNWARE_WATCHDOG) || \
120 defined(CONFIG_IMX_WATCHDOG))
122 puts(" Watchdog enabled\n");
129 int init_func_watchdog_reset(void)
135 #endif /* CONFIG_WATCHDOG */
137 __weak void board_add_ram_info(int use_default)
139 /* please define platform specific board_add_ram_info() */
142 static int init_baud_rate(void)
144 gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
148 static int display_text_info(void)
150 #if !defined(CONFIG_SANDBOX) && !defined(CONFIG_EFI_APP)
151 ulong bss_start, bss_end, text_base;
153 bss_start = (ulong)&__bss_start;
154 bss_end = (ulong)&__bss_end;
156 #ifdef CONFIG_SYS_TEXT_BASE
157 text_base = CONFIG_SYS_TEXT_BASE;
159 text_base = CONFIG_SYS_MONITOR_BASE;
162 debug("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
163 text_base, bss_start, bss_end);
166 #ifdef CONFIG_USE_IRQ
167 debug("IRQ Stack: %08lx\n", IRQ_STACK_START);
168 debug("FIQ Stack: %08lx\n", FIQ_STACK_START);
174 static int announce_dram_init(void)
180 #if defined(CONFIG_MIPS) || defined(CONFIG_PPC) || defined(CONFIG_M68K)
181 static int init_func_ram(void)
187 static int show_dram_config(void)
189 unsigned long long size;
191 #ifdef CONFIG_NR_DRAM_BANKS
194 debug("\nRAM Configuration:\n");
195 for (i = size = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
196 size += gd->bd->bi_dram[i].size;
197 debug("Bank #%d: %llx ", i,
198 (unsigned long long)(gd->bd->bi_dram[i].start));
200 print_size(gd->bd->bi_dram[i].size, "\n");
208 print_size(size, "");
209 board_add_ram_info(0);
215 __weak void dram_init_banksize(void)
217 #if defined(CONFIG_NR_DRAM_BANKS) && defined(CONFIG_SYS_SDRAM_BASE)
218 gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
219 gd->bd->bi_dram[0].size = get_effective_memsize();
223 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C)
224 static int init_func_i2c(void)
227 #ifdef CONFIG_SYS_I2C
230 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
237 #if defined(CONFIG_HARD_SPI)
238 static int init_func_spi(void)
248 static int zero_global_data(void)
250 memset((void *)gd, '\0', sizeof(gd_t));
255 static int setup_mon_len(void)
257 #if defined(__ARM__) || defined(__MICROBLAZE__)
258 gd->mon_len = (ulong)&__bss_end - (ulong)_start;
259 #elif defined(CONFIG_SANDBOX) || defined(CONFIG_EFI_APP)
260 gd->mon_len = (ulong)&_end - (ulong)_init;
261 #elif defined(CONFIG_NIOS2) || defined(CONFIG_XTENSA)
262 gd->mon_len = CONFIG_SYS_MONITOR_LEN;
263 #elif defined(CONFIG_NDS32) || defined(CONFIG_SH)
264 gd->mon_len = (ulong)(&__bss_end) - (ulong)(&_start);
265 #elif defined(CONFIG_SYS_MONITOR_BASE)
266 /* TODO: use (ulong)&__bss_end - (ulong)&__text_start; ? */
267 gd->mon_len = (ulong)&__bss_end - CONFIG_SYS_MONITOR_BASE;
272 __weak int arch_cpu_init(void)
277 __weak int mach_cpu_init(void)
282 /* Get the top of usable RAM */
283 __weak ulong board_get_usable_ram_top(ulong total_size)
285 #ifdef CONFIG_SYS_SDRAM_BASE
287 * Detect whether we have so much RAM that it goes past the end of our
288 * 32-bit address space. If so, clip the usable RAM so it doesn't.
290 if (gd->ram_top < CONFIG_SYS_SDRAM_BASE)
292 * Will wrap back to top of 32-bit space when reservations
300 static int setup_dest_addr(void)
302 debug("Monitor len: %08lX\n", gd->mon_len);
304 * Ram is setup, size stored in gd !!
306 debug("Ram size: %08lX\n", (ulong)gd->ram_size);
307 #if defined(CONFIG_SYS_MEM_TOP_HIDE)
309 * Subtract specified amount of memory to hide so that it won't
310 * get "touched" at all by U-Boot. By fixing up gd->ram_size
311 * the Linux kernel should now get passed the now "corrected"
312 * memory size and won't touch it either. This should work
313 * for arch/ppc and arch/powerpc. Only Linux board ports in
314 * arch/powerpc with bootwrapper support, that recalculate the
315 * memory size from the SDRAM controller setup will have to
318 gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
320 #ifdef CONFIG_SYS_SDRAM_BASE
321 gd->ram_top = CONFIG_SYS_SDRAM_BASE;
323 gd->ram_top += get_effective_memsize();
324 gd->ram_top = board_get_usable_ram_top(gd->mon_len);
325 gd->relocaddr = gd->ram_top;
326 debug("Ram top: %08lX\n", (ulong)gd->ram_top);
327 #if defined(CONFIG_MP) && (defined(CONFIG_MPC86xx) || defined(CONFIG_E500))
329 * We need to make sure the location we intend to put secondary core
330 * boot code is reserved and not used by any part of u-boot
332 if (gd->relocaddr > determine_mp_bootpg(NULL)) {
333 gd->relocaddr = determine_mp_bootpg(NULL);
334 debug("Reserving MP boot page to %08lx\n", gd->relocaddr);
340 #if defined(CONFIG_LOGBUFFER)
341 static int reserve_logbuffer(void)
343 #ifndef CONFIG_ALT_LB_ADDR
344 /* reserve kernel log buffer */
345 gd->relocaddr -= LOGBUFF_RESERVE;
346 debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN,
355 /* reserve protected RAM */
356 static int reserve_pram(void)
360 reg = getenv_ulong("pram", 10, CONFIG_PRAM);
361 gd->relocaddr -= (reg << 10); /* size is in kB */
362 debug("Reserving %ldk for protected RAM at %08lx\n", reg,
366 #endif /* CONFIG_PRAM */
368 /* Round memory pointer down to next 4 kB limit */
369 static int reserve_round_4k(void)
371 gd->relocaddr &= ~(4096 - 1);
376 static int reserve_mmu(void)
378 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
379 /* reserve TLB table */
380 gd->arch.tlb_size = PGTABLE_SIZE;
381 gd->relocaddr -= gd->arch.tlb_size;
383 /* round down to next 64 kB limit */
384 gd->relocaddr &= ~(0x10000 - 1);
386 gd->arch.tlb_addr = gd->relocaddr;
387 debug("TLB table from %08lx to %08lx\n", gd->arch.tlb_addr,
388 gd->arch.tlb_addr + gd->arch.tlb_size);
390 #ifdef CONFIG_SYS_MEM_RESERVE_SECURE
392 * Record allocated tlb_addr in case gd->tlb_addr to be overwritten
393 * with location within secure ram.
395 gd->arch.tlb_allocated = gd->arch.tlb_addr;
403 static int reserve_video(void)
405 #ifdef CONFIG_DM_VIDEO
409 addr = gd->relocaddr;
410 ret = video_reserve(&addr);
413 gd->relocaddr = addr;
414 #elif defined(CONFIG_LCD)
415 # ifdef CONFIG_FB_ADDR
416 gd->fb_base = CONFIG_FB_ADDR;
418 /* reserve memory for LCD display (always full pages) */
419 gd->relocaddr = lcd_setmem(gd->relocaddr);
420 gd->fb_base = gd->relocaddr;
421 # endif /* CONFIG_FB_ADDR */
422 #elif defined(CONFIG_VIDEO) && \
423 (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) && \
424 !defined(CONFIG_ARM) && !defined(CONFIG_X86) && \
425 !defined(CONFIG_M68K)
426 /* reserve memory for video display (always full pages) */
427 gd->relocaddr = video_setmem(gd->relocaddr);
428 gd->fb_base = gd->relocaddr;
434 static int reserve_trace(void)
437 gd->relocaddr -= CONFIG_TRACE_BUFFER_SIZE;
438 gd->trace_buff = map_sysmem(gd->relocaddr, CONFIG_TRACE_BUFFER_SIZE);
439 debug("Reserving %dk for trace data at: %08lx\n",
440 CONFIG_TRACE_BUFFER_SIZE >> 10, gd->relocaddr);
446 static int reserve_uboot(void)
449 * reserve memory for U-Boot code, data & bss
450 * round down to next 4 kB limit
452 gd->relocaddr -= gd->mon_len;
453 gd->relocaddr &= ~(4096 - 1);
455 /* round down to next 64 kB limit so that IVPR stays aligned */
456 gd->relocaddr &= ~(65536 - 1);
459 debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10,
462 gd->start_addr_sp = gd->relocaddr;
467 #ifndef CONFIG_SPL_BUILD
468 /* reserve memory for malloc() area */
469 static int reserve_malloc(void)
471 gd->start_addr_sp = gd->start_addr_sp - TOTAL_MALLOC_LEN;
472 debug("Reserving %dk for malloc() at: %08lx\n",
473 TOTAL_MALLOC_LEN >> 10, gd->start_addr_sp);
477 /* (permanently) allocate a Board Info struct */
478 static int reserve_board(void)
481 gd->start_addr_sp -= sizeof(bd_t);
482 gd->bd = (bd_t *)map_sysmem(gd->start_addr_sp, sizeof(bd_t));
483 memset(gd->bd, '\0', sizeof(bd_t));
484 debug("Reserving %zu Bytes for Board Info at: %08lx\n",
485 sizeof(bd_t), gd->start_addr_sp);
491 static int setup_machine(void)
493 #ifdef CONFIG_MACH_TYPE
494 gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
499 static int reserve_global_data(void)
501 gd->start_addr_sp -= sizeof(gd_t);
502 gd->new_gd = (gd_t *)map_sysmem(gd->start_addr_sp, sizeof(gd_t));
503 debug("Reserving %zu Bytes for Global Data at: %08lx\n",
504 sizeof(gd_t), gd->start_addr_sp);
508 static int reserve_fdt(void)
510 #ifndef CONFIG_OF_EMBED
512 * If the device tree is sitting immediately above our image then we
513 * must relocate it. If it is embedded in the data section, then it
514 * will be relocated with other data.
517 gd->fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
519 gd->start_addr_sp -= gd->fdt_size;
520 gd->new_fdt = map_sysmem(gd->start_addr_sp, gd->fdt_size);
521 debug("Reserving %lu Bytes for FDT at: %08lx\n",
522 gd->fdt_size, gd->start_addr_sp);
529 int arch_reserve_stacks(void)
534 static int reserve_stacks(void)
536 /* make stack pointer 16-byte aligned */
537 gd->start_addr_sp -= 16;
538 gd->start_addr_sp &= ~0xf;
541 * let the architecture-specific code tailor gd->start_addr_sp and
544 return arch_reserve_stacks();
547 static int display_new_sp(void)
549 debug("New Stack Pointer is: %08lx\n", gd->start_addr_sp);
554 #if defined(CONFIG_M68K) || defined(CONFIG_MIPS) || defined(CONFIG_PPC) || \
556 static int setup_board_part1(void)
561 * Save local variables to board info struct
563 bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; /* start of memory */
564 bd->bi_memsize = gd->ram_size; /* size in bytes */
566 #ifdef CONFIG_SYS_SRAM_BASE
567 bd->bi_sramstart = CONFIG_SYS_SRAM_BASE; /* start of SRAM */
568 bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE; /* size of SRAM */
571 #if defined(CONFIG_8xx) || defined(CONFIG_MPC8260) || defined(CONFIG_5xx) || \
572 defined(CONFIG_E500) || defined(CONFIG_MPC86xx)
573 bd->bi_immr_base = CONFIG_SYS_IMMR; /* base of IMMR register */
575 #if defined(CONFIG_MPC5xxx) || defined(CONFIG_M68K)
576 bd->bi_mbar_base = CONFIG_SYS_MBAR; /* base of internal registers */
578 #if defined(CONFIG_MPC83xx)
579 bd->bi_immrbar = CONFIG_SYS_IMMR;
586 #if defined(CONFIG_PPC) || defined(CONFIG_M68K)
587 static int setup_board_part2(void)
591 bd->bi_intfreq = gd->cpu_clk; /* Internal Freq, in Hz */
592 bd->bi_busfreq = gd->bus_clk; /* Bus Freq, in Hz */
593 #if defined(CONFIG_CPM2)
594 bd->bi_cpmfreq = gd->arch.cpm_clk;
595 bd->bi_brgfreq = gd->arch.brg_clk;
596 bd->bi_sccfreq = gd->arch.scc_clk;
597 bd->bi_vco = gd->arch.vco_out;
598 #endif /* CONFIG_CPM2 */
599 #if defined(CONFIG_MPC512X)
600 bd->bi_ipsfreq = gd->arch.ips_clk;
601 #endif /* CONFIG_MPC512X */
602 #if defined(CONFIG_MPC5xxx)
603 bd->bi_ipbfreq = gd->arch.ipb_clk;
604 bd->bi_pcifreq = gd->pci_clk;
605 #endif /* CONFIG_MPC5xxx */
606 #if defined(CONFIG_M68K) && defined(CONFIG_PCI)
607 bd->bi_pcifreq = gd->pci_clk;
609 #if defined(CONFIG_EXTRA_CLOCK)
610 bd->bi_inpfreq = gd->arch.inp_clk; /* input Freq in Hz */
611 bd->bi_vcofreq = gd->arch.vco_clk; /* vco Freq in Hz */
612 bd->bi_flbfreq = gd->arch.flb_clk; /* flexbus Freq in Hz */
619 #ifdef CONFIG_SYS_EXTBDINFO
620 static int setup_board_extra(void)
624 strncpy((char *) bd->bi_s_version, "1.2", sizeof(bd->bi_s_version));
625 strncpy((char *) bd->bi_r_version, U_BOOT_VERSION,
626 sizeof(bd->bi_r_version));
628 bd->bi_procfreq = gd->cpu_clk; /* Processor Speed, In Hz */
629 bd->bi_plb_busfreq = gd->bus_clk;
630 #if defined(CONFIG_405GP) || defined(CONFIG_405EP) || \
631 defined(CONFIG_440EP) || defined(CONFIG_440GR) || \
632 defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
633 bd->bi_pci_busfreq = get_PCI_freq();
634 bd->bi_opbfreq = get_OPB_freq();
635 #elif defined(CONFIG_XILINX_405)
636 bd->bi_pci_busfreq = get_PCI_freq();
644 static int init_post(void)
646 post_bootmode_init();
647 post_run(NULL, POST_ROM | post_bootmode_get(0));
653 static int setup_dram_config(void)
655 /* Ram is board specific, so move it to board code ... */
656 dram_init_banksize();
661 static int reloc_fdt(void)
663 #ifndef CONFIG_OF_EMBED
664 if (gd->flags & GD_FLG_SKIP_RELOC)
667 memcpy(gd->new_fdt, gd->fdt_blob, gd->fdt_size);
668 gd->fdt_blob = gd->new_fdt;
675 static int setup_reloc(void)
677 if (gd->flags & GD_FLG_SKIP_RELOC) {
678 debug("Skipping relocation due to flag\n");
682 #ifdef CONFIG_SYS_TEXT_BASE
683 gd->reloc_off = gd->relocaddr - CONFIG_SYS_TEXT_BASE;
686 * On all ColdFire arch cpu, monitor code starts always
687 * just after the default vector table location, so at 0x400
689 gd->reloc_off = gd->relocaddr - (CONFIG_SYS_TEXT_BASE + 0x400);
692 memcpy(gd->new_gd, (char *)gd, sizeof(gd_t));
694 debug("Relocation Offset is: %08lx\n", gd->reloc_off);
695 debug("Relocating to %08lx, new gd at %08lx, sp at %08lx\n",
696 gd->relocaddr, (ulong)map_to_sysmem(gd->new_gd),
702 #ifdef CONFIG_OF_BOARD_FIXUP
703 static int fix_fdt(void)
705 return board_fix_fdt((void *)gd->fdt_blob);
709 /* ARM calls relocate_code from its crt0.S */
710 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) && \
711 !CONFIG_IS_ENABLED(X86_64)
713 static int jump_to_copy(void)
715 if (gd->flags & GD_FLG_SKIP_RELOC)
718 * x86 is special, but in a nice way. It uses a trampoline which
719 * enables the dcache if possible.
721 * For now, other archs use relocate_code(), which is implemented
722 * similarly for all archs. When we do generic relocation, hopefully
723 * we can make all archs enable the dcache prior to relocation.
725 #if defined(CONFIG_X86) || defined(CONFIG_ARC)
727 * SDRAM and console are now initialised. The final stack can now
728 * be setup in SDRAM. Code execution will continue in Flash, but
729 * with the stack in SDRAM and Global Data in temporary memory
732 arch_setup_gd(gd->new_gd);
733 board_init_f_r_trampoline(gd->start_addr_sp);
735 relocate_code(gd->start_addr_sp, gd->new_gd, gd->relocaddr);
742 /* Record the board_init_f() bootstage (after arch_cpu_init()) */
743 static int mark_bootstage(void)
745 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f");
750 static int initf_console_record(void)
752 #if defined(CONFIG_CONSOLE_RECORD) && defined(CONFIG_SYS_MALLOC_F_LEN)
753 return console_record_init();
759 static int initf_dm(void)
761 #if defined(CONFIG_DM) && defined(CONFIG_SYS_MALLOC_F_LEN)
764 ret = dm_init_and_scan(true);
768 #ifdef CONFIG_TIMER_EARLY
769 ret = dm_timer_init();
777 /* Architecture-specific memory reservation */
778 __weak int reserve_arch(void)
783 __weak int arch_cpu_init_dm(void)
788 static const init_fnc_t init_sequence_f[] = {
790 #ifdef CONFIG_OF_CONTROL
797 initf_console_record,
798 #if defined(CONFIG_HAVE_FSP)
801 arch_cpu_init, /* basic arch cpu dependent setup */
802 mach_cpu_init, /* SoC/machine dependent CPU setup */
805 mark_bootstage, /* need timer, go after init dm */
806 #if defined(CONFIG_BOARD_EARLY_INIT_F)
809 #if defined(CONFIG_PPC) || defined(CONFIG_SYS_FSL_CLK) || defined(CONFIG_M68K)
810 /* get CPU and bus clocks according to the environment variable */
811 get_clocks, /* get CPU and bus clocks (etc.) */
813 timer_init, /* initialize timer */
814 #if defined(CONFIG_BOARD_POSTCLK_INIT)
817 env_init, /* initialize environment */
818 init_baud_rate, /* initialze baudrate settings */
819 serial_init, /* serial communications setup */
820 console_init_f, /* stage 1 init of console */
821 display_options, /* say that we are here */
822 display_text_info, /* show debugging info if required */
823 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_SH) || \
827 #if defined(CONFIG_DISPLAY_CPUINFO)
828 print_cpuinfo, /* display cpu info (and speed) */
830 #if defined(CONFIG_DISPLAY_BOARDINFO)
833 INIT_FUNC_WATCHDOG_INIT
834 #if defined(CONFIG_MISC_INIT_F)
837 INIT_FUNC_WATCHDOG_RESET
838 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C)
841 #if defined(CONFIG_HARD_SPI)
845 /* TODO: unify all these dram functions? */
846 #if defined(CONFIG_ARM) || defined(CONFIG_X86) || defined(CONFIG_NDS32) || \
847 defined(CONFIG_MICROBLAZE) || defined(CONFIG_AVR32) || \
849 dram_init, /* configure available RAM banks */
851 #if defined(CONFIG_MIPS) || defined(CONFIG_PPC) || defined(CONFIG_M68K)
857 INIT_FUNC_WATCHDOG_RESET
858 #if defined(CONFIG_SYS_DRAM_TEST)
860 #endif /* CONFIG_SYS_DRAM_TEST */
861 INIT_FUNC_WATCHDOG_RESET
866 INIT_FUNC_WATCHDOG_RESET
868 * Now that we have DRAM mapped and working, we can
869 * relocate the code and continue running from DRAM.
871 * Reserve memory at end of RAM for (top down in that order):
872 * - area that won't get touched by U-Boot and Linux (optional)
873 * - kernel log buffer
877 * - board info struct
880 #if defined(CONFIG_LOGBUFFER)
893 #ifndef CONFIG_SPL_BUILD
904 #if defined(CONFIG_M68K) || defined(CONFIG_MIPS) || defined(CONFIG_PPC) || \
908 #if defined(CONFIG_PPC) || defined(CONFIG_M68K)
909 INIT_FUNC_WATCHDOG_RESET
913 #ifdef CONFIG_SYS_EXTBDINFO
916 #ifdef CONFIG_OF_BOARD_FIXUP
919 INIT_FUNC_WATCHDOG_RESET
922 #if defined(CONFIG_X86) || defined(CONFIG_ARC)
927 #if defined(CONFIG_XTENSA)
930 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) && \
931 !CONFIG_IS_ENABLED(X86_64)
937 void board_init_f(ulong boot_flags)
939 #ifdef CONFIG_SYS_GENERIC_GLOBAL_DATA
941 * For some architectures, global data is initialized and used before
942 * calling this function. The data should be preserved. For others,
943 * CONFIG_SYS_GENERIC_GLOBAL_DATA should be defined and use the stack
944 * here to host global data until relocation.
951 * Clear global data before it is accessed at debug print
952 * in initcall_run_list. Otherwise the debug print probably
953 * get the wrong value of gd->have_console.
958 gd->flags = boot_flags;
959 gd->have_console = 0;
961 if (initcall_run_list(init_sequence_f))
964 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX) && \
965 !defined(CONFIG_EFI_APP) && !CONFIG_IS_ENABLED(X86_64)
966 /* NOTREACHED - jump_to_copy() does not return */
971 #if defined(CONFIG_X86) || defined(CONFIG_ARC)
973 * For now this code is only used on x86.
975 * init_sequence_f_r is the list of init functions which are run when
976 * U-Boot is executing from Flash with a semi-limited 'C' environment.
977 * The following limitations must be considered when implementing an
979 * - 'static' variables are read-only
980 * - Global Data (gd->xxx) is read/write
982 * The '_f_r' sequence must, as a minimum, copy U-Boot to RAM (if
983 * supported). It _should_, if possible, copy global data to RAM and
984 * initialise the CPU caches (to speed up the relocation process)
986 * NOTE: At present only x86 uses this route, but it is intended that
987 * all archs will move to this when generic relocation is implemented.
989 static const init_fnc_t init_sequence_f_r[] = {
990 #if !CONFIG_IS_ENABLED(X86_64)
997 void board_init_f_r(void)
999 if (initcall_run_list(init_sequence_f_r))
1003 * The pre-relocation drivers may be using memory that has now gone
1004 * away. Mark serial as unavailable - this will fall back to the debug
1005 * UART if available.
1007 gd->flags &= ~GD_FLG_SERIAL_READY;
1010 * U-Boot has been copied into SDRAM, the BSS has been cleared etc.
1011 * Transfer execution from Flash to RAM by calculating the address
1012 * of the in-RAM copy of board_init_r() and calling it
1014 (board_init_r + gd->reloc_off)((gd_t *)gd, gd->relocaddr);
1016 /* NOTREACHED - board_init_r() does not return */
1019 #endif /* CONFIG_X86 */