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>
16 #include <environment.h>
20 #if defined(CONFIG_CMD_IDE)
28 /* TODO: Can we move these into arch/ headers? */
38 #if defined(CONFIG_MP) && (defined(CONFIG_MPC86xx) || defined(CONFIG_E500))
45 #include <status_led.h>
48 #include <asm/errno.h>
50 #include <asm/sections.h>
51 #if defined(CONFIG_X86) || defined(CONFIG_ARC)
52 #include <asm/init_helpers.h>
53 #include <asm/relocate.h>
56 #include <asm/state.h>
59 #include <linux/compiler.h>
62 * Pointer to initial global data area
64 * Here we initialize it if needed.
66 #ifdef XTRN_DECLARE_GLOBAL_DATA_PTR
67 #undef XTRN_DECLARE_GLOBAL_DATA_PTR
68 #define XTRN_DECLARE_GLOBAL_DATA_PTR /* empty = allocate here */
69 DECLARE_GLOBAL_DATA_PTR = (gd_t *) (CONFIG_SYS_INIT_GD_ADDR);
71 DECLARE_GLOBAL_DATA_PTR;
75 * sjg: IMO this code should be
76 * refactored to a single function, something like:
78 * void led_set_state(enum led_colour_t colour, int on);
80 /************************************************************************
81 * Coloured LED functionality
82 ************************************************************************
83 * May be supplied by boards if desired
85 __weak void coloured_LED_init(void) {}
86 __weak void red_led_on(void) {}
87 __weak void red_led_off(void) {}
88 __weak void green_led_on(void) {}
89 __weak void green_led_off(void) {}
90 __weak void yellow_led_on(void) {}
91 __weak void yellow_led_off(void) {}
92 __weak void blue_led_on(void) {}
93 __weak void blue_led_off(void) {}
96 * Why is gd allocated a register? Prior to reloc it might be better to
97 * just pass it around to each function in this file?
99 * After reloc one could argue that it is hardly used and doesn't need
100 * to be in a register. Or if it is it should perhaps hold pointers to all
101 * global data for all modules, so that post-reloc we can avoid the massive
102 * literal pool we get on ARM. Or perhaps just encourage each module to use
107 * Could the CONFIG_SPL_BUILD infection become a flag in gd?
110 #if defined(CONFIG_WATCHDOG) || defined(CONFIG_HW_WATCHDOG)
111 static int init_func_watchdog_init(void)
113 # if defined(CONFIG_HW_WATCHDOG) && (defined(CONFIG_BLACKFIN) || \
114 defined(CONFIG_M68K) || defined(CONFIG_MICROBLAZE) || \
115 defined(CONFIG_SH) || defined(CONFIG_AT91SAM9_WATCHDOG) || \
116 defined(CONFIG_IMX_WATCHDOG))
119 puts(" Watchdog enabled\n");
125 int init_func_watchdog_reset(void)
131 #endif /* CONFIG_WATCHDOG */
133 __weak void board_add_ram_info(int use_default)
135 /* please define platform specific board_add_ram_info() */
138 static int init_baud_rate(void)
140 gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
144 static int display_text_info(void)
146 #ifndef CONFIG_SANDBOX
147 ulong bss_start, bss_end, text_base;
149 bss_start = (ulong)&__bss_start;
150 bss_end = (ulong)&__bss_end;
152 #ifdef CONFIG_SYS_TEXT_BASE
153 text_base = CONFIG_SYS_TEXT_BASE;
155 text_base = CONFIG_SYS_MONITOR_BASE;
158 debug("U-Boot code: %08lX -> %08lX BSS: -> %08lX\n",
159 text_base, bss_start, bss_end);
162 #ifdef CONFIG_MODEM_SUPPORT
163 debug("Modem Support enabled\n");
165 #ifdef CONFIG_USE_IRQ
166 debug("IRQ Stack: %08lx\n", IRQ_STACK_START);
167 debug("FIQ Stack: %08lx\n", FIQ_STACK_START);
173 static int announce_dram_init(void)
179 #if defined(CONFIG_MIPS) || defined(CONFIG_PPC) || defined(CONFIG_M68K)
180 static int init_func_ram(void)
182 #ifdef CONFIG_BOARD_TYPES
183 int board_type = gd->board_type;
185 int board_type = 0; /* use dummy arg */
188 gd->ram_size = initdram(board_type);
190 if (gd->ram_size > 0)
193 puts("*** failed ***\n");
198 static int show_dram_config(void)
200 unsigned long long size;
202 #ifdef CONFIG_NR_DRAM_BANKS
205 debug("\nRAM Configuration:\n");
206 for (i = size = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
207 size += gd->bd->bi_dram[i].size;
208 debug("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
210 print_size(gd->bd->bi_dram[i].size, "\n");
218 print_size(size, "");
219 board_add_ram_info(0);
225 __weak void dram_init_banksize(void)
227 #if defined(CONFIG_NR_DRAM_BANKS) && defined(CONFIG_SYS_SDRAM_BASE)
228 gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
229 gd->bd->bi_dram[0].size = get_effective_memsize();
233 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C)
234 static int init_func_i2c(void)
237 #ifdef CONFIG_SYS_I2C
240 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
247 #if defined(CONFIG_HARD_SPI)
248 static int init_func_spi(void)
258 static int zero_global_data(void)
260 memset((void *)gd, '\0', sizeof(gd_t));
265 static int setup_mon_len(void)
267 #if defined(__ARM__) || defined(__MICROBLAZE__)
268 gd->mon_len = (ulong)&__bss_end - (ulong)_start;
269 #elif defined(CONFIG_SANDBOX)
270 gd->mon_len = (ulong)&_end - (ulong)_init;
271 #elif defined(CONFIG_BLACKFIN) || defined(CONFIG_NIOS2)
272 gd->mon_len = CONFIG_SYS_MONITOR_LEN;
274 /* TODO: use (ulong)&__bss_end - (ulong)&__text_start; ? */
275 gd->mon_len = (ulong)&__bss_end - CONFIG_SYS_MONITOR_BASE;
280 __weak int arch_cpu_init(void)
285 #ifdef CONFIG_SANDBOX
286 static int setup_ram_buf(void)
288 struct sandbox_state *state = state_get_current();
290 gd->arch.ram_buf = state->ram_buf;
291 gd->ram_size = state->ram_size;
297 /* Get the top of usable RAM */
298 __weak ulong board_get_usable_ram_top(ulong total_size)
300 #ifdef CONFIG_SYS_SDRAM_BASE
302 * Detect whether we have so much RAM it goes past the end of our
303 * 32-bit address space. If so, clip the usable RAM so it doesn't.
305 if (gd->ram_top < CONFIG_SYS_SDRAM_BASE)
307 * Will wrap back to top of 32-bit space when reservations
315 static int setup_dest_addr(void)
317 debug("Monitor len: %08lX\n", gd->mon_len);
319 * Ram is setup, size stored in gd !!
321 debug("Ram size: %08lX\n", (ulong)gd->ram_size);
322 #if defined(CONFIG_SYS_MEM_TOP_HIDE)
324 * Subtract specified amount of memory to hide so that it won't
325 * get "touched" at all by U-Boot. By fixing up gd->ram_size
326 * the Linux kernel should now get passed the now "corrected"
327 * memory size and won't touch it either. This should work
328 * for arch/ppc and arch/powerpc. Only Linux board ports in
329 * arch/powerpc with bootwrapper support, that recalculate the
330 * memory size from the SDRAM controller setup will have to
333 gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
335 #ifdef CONFIG_SYS_SDRAM_BASE
336 gd->ram_top = CONFIG_SYS_SDRAM_BASE;
338 gd->ram_top += get_effective_memsize();
339 gd->ram_top = board_get_usable_ram_top(gd->mon_len);
340 gd->relocaddr = gd->ram_top;
341 debug("Ram top: %08lX\n", (ulong)gd->ram_top);
342 #if defined(CONFIG_MP) && (defined(CONFIG_MPC86xx) || defined(CONFIG_E500))
344 * We need to make sure the location we intend to put secondary core
345 * boot code is reserved and not used by any part of u-boot
347 if (gd->relocaddr > determine_mp_bootpg(NULL)) {
348 gd->relocaddr = determine_mp_bootpg(NULL);
349 debug("Reserving MP boot page to %08lx\n", gd->relocaddr);
355 #if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR)
356 static int reserve_logbuffer(void)
358 /* reserve kernel log buffer */
359 gd->relocaddr -= LOGBUFF_RESERVE;
360 debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN,
367 /* reserve protected RAM */
368 static int reserve_pram(void)
372 reg = getenv_ulong("pram", 10, CONFIG_PRAM);
373 gd->relocaddr -= (reg << 10); /* size is in kB */
374 debug("Reserving %ldk for protected RAM at %08lx\n", reg,
378 #endif /* CONFIG_PRAM */
380 /* Round memory pointer down to next 4 kB limit */
381 static int reserve_round_4k(void)
383 gd->relocaddr &= ~(4096 - 1);
387 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) && \
389 static int reserve_mmu(void)
391 /* reserve TLB table */
392 gd->arch.tlb_size = PGTABLE_SIZE;
393 gd->relocaddr -= gd->arch.tlb_size;
395 /* round down to next 64 kB limit */
396 gd->relocaddr &= ~(0x10000 - 1);
398 gd->arch.tlb_addr = gd->relocaddr;
399 debug("TLB table from %08lx to %08lx\n", gd->arch.tlb_addr,
400 gd->arch.tlb_addr + gd->arch.tlb_size);
406 static int reserve_lcd(void)
408 #ifdef CONFIG_FB_ADDR
409 gd->fb_base = CONFIG_FB_ADDR;
411 /* reserve memory for LCD display (always full pages) */
412 gd->relocaddr = lcd_setmem(gd->relocaddr);
413 gd->fb_base = gd->relocaddr;
414 #endif /* CONFIG_FB_ADDR */
417 #endif /* CONFIG_LCD */
419 static int reserve_trace(void)
422 gd->relocaddr -= CONFIG_TRACE_BUFFER_SIZE;
423 gd->trace_buff = map_sysmem(gd->relocaddr, CONFIG_TRACE_BUFFER_SIZE);
424 debug("Reserving %dk for trace data at: %08lx\n",
425 CONFIG_TRACE_BUFFER_SIZE >> 10, gd->relocaddr);
431 #if defined(CONFIG_VIDEO) && (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) && \
432 !defined(CONFIG_ARM) && !defined(CONFIG_X86) && \
433 !defined(CONFIG_BLACKFIN) && !defined(CONFIG_M68K)
434 static int reserve_video(void)
436 /* reserve memory for video display (always full pages) */
437 gd->relocaddr = video_setmem(gd->relocaddr);
438 gd->fb_base = gd->relocaddr;
444 static int reserve_uboot(void)
447 * reserve memory for U-Boot code, data & bss
448 * round down to next 4 kB limit
450 gd->relocaddr -= gd->mon_len;
451 gd->relocaddr &= ~(4096 - 1);
453 /* round down to next 64 kB limit so that IVPR stays aligned */
454 gd->relocaddr &= ~(65536 - 1);
457 debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10,
460 gd->start_addr_sp = gd->relocaddr;
465 #ifndef CONFIG_SPL_BUILD
466 /* reserve memory for malloc() area */
467 static int reserve_malloc(void)
469 gd->start_addr_sp = gd->start_addr_sp - TOTAL_MALLOC_LEN;
470 debug("Reserving %dk for malloc() at: %08lx\n",
471 TOTAL_MALLOC_LEN >> 10, gd->start_addr_sp);
475 /* (permanently) allocate a Board Info struct */
476 static int reserve_board(void)
479 gd->start_addr_sp -= sizeof(bd_t);
480 gd->bd = (bd_t *)map_sysmem(gd->start_addr_sp, sizeof(bd_t));
481 memset(gd->bd, '\0', sizeof(bd_t));
482 debug("Reserving %zu Bytes for Board Info at: %08lx\n",
483 sizeof(bd_t), gd->start_addr_sp);
489 static int setup_machine(void)
491 #ifdef CONFIG_MACH_TYPE
492 gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
497 static int reserve_global_data(void)
499 gd->start_addr_sp -= sizeof(gd_t);
500 gd->new_gd = (gd_t *)map_sysmem(gd->start_addr_sp, sizeof(gd_t));
501 debug("Reserving %zu Bytes for Global Data at: %08lx\n",
502 sizeof(gd_t), gd->start_addr_sp);
506 static int reserve_fdt(void)
509 * If the device tree is sitting immediate above our image then we
510 * must relocate it. If it is embedded in the data section, then it
511 * will be relocated with other data.
514 gd->fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
516 gd->start_addr_sp -= gd->fdt_size;
517 gd->new_fdt = map_sysmem(gd->start_addr_sp, gd->fdt_size);
518 debug("Reserving %lu Bytes for FDT at: %08lx\n",
519 gd->fdt_size, gd->start_addr_sp);
525 int arch_reserve_stacks(void)
530 static int reserve_stacks(void)
532 /* make stack pointer 16-byte aligned */
533 gd->start_addr_sp -= 16;
534 gd->start_addr_sp &= ~0xf;
537 * let the architecture specific code tailor gd->start_addr_sp and
540 return arch_reserve_stacks();
543 static int display_new_sp(void)
545 debug("New Stack Pointer is: %08lx\n", gd->start_addr_sp);
550 #if defined(CONFIG_PPC) || defined(CONFIG_M68K)
551 static int setup_board_part1(void)
556 * Save local variables to board info struct
559 bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; /* start of memory */
560 bd->bi_memsize = gd->ram_size; /* size in bytes */
562 #ifdef CONFIG_SYS_SRAM_BASE
563 bd->bi_sramstart = CONFIG_SYS_SRAM_BASE; /* start of SRAM */
564 bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE; /* size of SRAM */
567 #if defined(CONFIG_8xx) || defined(CONFIG_MPC8260) || defined(CONFIG_5xx) || \
568 defined(CONFIG_E500) || defined(CONFIG_MPC86xx)
569 bd->bi_immr_base = CONFIG_SYS_IMMR; /* base of IMMR register */
571 #if defined(CONFIG_MPC5xxx) || defined(CONFIG_M68K)
572 bd->bi_mbar_base = CONFIG_SYS_MBAR; /* base of internal registers */
574 #if defined(CONFIG_MPC83xx)
575 bd->bi_immrbar = CONFIG_SYS_IMMR;
581 static int setup_board_part2(void)
585 bd->bi_intfreq = gd->cpu_clk; /* Internal Freq, in Hz */
586 bd->bi_busfreq = gd->bus_clk; /* Bus Freq, in Hz */
587 #if defined(CONFIG_CPM2)
588 bd->bi_cpmfreq = gd->arch.cpm_clk;
589 bd->bi_brgfreq = gd->arch.brg_clk;
590 bd->bi_sccfreq = gd->arch.scc_clk;
591 bd->bi_vco = gd->arch.vco_out;
592 #endif /* CONFIG_CPM2 */
593 #if defined(CONFIG_MPC512X)
594 bd->bi_ipsfreq = gd->arch.ips_clk;
595 #endif /* CONFIG_MPC512X */
596 #if defined(CONFIG_MPC5xxx)
597 bd->bi_ipbfreq = gd->arch.ipb_clk;
598 bd->bi_pcifreq = gd->pci_clk;
599 #endif /* CONFIG_MPC5xxx */
600 #if defined(CONFIG_M68K) && defined(CONFIG_PCI)
601 bd->bi_pcifreq = gd->pci_clk;
603 #if defined(CONFIG_EXTRA_CLOCK)
604 bd->bi_inpfreq = gd->arch.inp_clk; /* input Freq in Hz */
605 bd->bi_vcofreq = gd->arch.vco_clk; /* vco Freq in Hz */
606 bd->bi_flbfreq = gd->arch.flb_clk; /* flexbus Freq in Hz */
613 #ifdef CONFIG_SYS_EXTBDINFO
614 static int setup_board_extra(void)
618 strncpy((char *) bd->bi_s_version, "1.2", sizeof(bd->bi_s_version));
619 strncpy((char *) bd->bi_r_version, U_BOOT_VERSION,
620 sizeof(bd->bi_r_version));
622 bd->bi_procfreq = gd->cpu_clk; /* Processor Speed, In Hz */
623 bd->bi_plb_busfreq = gd->bus_clk;
624 #if defined(CONFIG_405GP) || defined(CONFIG_405EP) || \
625 defined(CONFIG_440EP) || defined(CONFIG_440GR) || \
626 defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
627 bd->bi_pci_busfreq = get_PCI_freq();
628 bd->bi_opbfreq = get_OPB_freq();
629 #elif defined(CONFIG_XILINX_405)
630 bd->bi_pci_busfreq = get_PCI_freq();
638 static int init_post(void)
640 post_bootmode_init();
641 post_run(NULL, POST_ROM | post_bootmode_get(0));
647 static int setup_dram_config(void)
649 /* Ram is board specific, so move it to board code ... */
650 dram_init_banksize();
655 static int reloc_fdt(void)
658 memcpy(gd->new_fdt, gd->fdt_blob, gd->fdt_size);
659 gd->fdt_blob = gd->new_fdt;
665 static int setup_reloc(void)
667 #ifdef CONFIG_SYS_TEXT_BASE
668 gd->reloc_off = gd->relocaddr - CONFIG_SYS_TEXT_BASE;
671 * On all ColdFire arch cpu, monitor code starts always
672 * just after the default vector table location, so at 0x400
674 gd->reloc_off = gd->relocaddr - (CONFIG_SYS_TEXT_BASE + 0x400);
677 memcpy(gd->new_gd, (char *)gd, sizeof(gd_t));
679 debug("Relocation Offset is: %08lx\n", gd->reloc_off);
680 debug("Relocating to %08lx, new gd at %08lx, sp at %08lx\n",
681 gd->relocaddr, (ulong)map_to_sysmem(gd->new_gd),
687 /* ARM calls relocate_code from its crt0.S */
688 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX)
690 static int jump_to_copy(void)
693 * x86 is special, but in a nice way. It uses a trampoline which
694 * enables the dcache if possible.
696 * For now, other archs use relocate_code(), which is implemented
697 * similarly for all archs. When we do generic relocation, hopefully
698 * we can make all archs enable the dcache prior to relocation.
700 #if defined(CONFIG_X86) || defined(CONFIG_ARC)
702 * SDRAM and console are now initialised. The final stack can now
703 * be setup in SDRAM. Code execution will continue in Flash, but
704 * with the stack in SDRAM and Global Data in temporary memory
707 board_init_f_r_trampoline(gd->start_addr_sp);
709 relocate_code(gd->start_addr_sp, gd->new_gd, gd->relocaddr);
716 /* Record the board_init_f() bootstage (after arch_cpu_init()) */
717 static int mark_bootstage(void)
719 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f");
724 static int initf_malloc(void)
726 #ifdef CONFIG_SYS_MALLOC_F_LEN
727 assert(gd->malloc_base); /* Set up by crt0.S */
728 gd->malloc_limit = gd->malloc_base + CONFIG_SYS_MALLOC_F_LEN;
735 static int initf_dm(void)
737 #if defined(CONFIG_DM) && defined(CONFIG_SYS_MALLOC_F_LEN)
740 ret = dm_init_and_scan(true);
748 /* Architecture-specific memory reservation */
749 __weak int reserve_arch(void)
754 __weak int arch_cpu_init_dm(void)
759 static init_fnc_t init_sequence_f[] = {
760 #ifdef CONFIG_SANDBOX
764 #ifdef CONFIG_OF_CONTROL
771 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
772 /* TODO: can this go into arch_cpu_init()? */
775 arch_cpu_init, /* basic arch cpu dependent setup */
777 #ifdef CONFIG_OF_CONTROL
782 #if defined(CONFIG_BOARD_EARLY_INIT_F)
785 /* TODO: can any of this go into arch_cpu_init()? */
786 #if defined(CONFIG_PPC) && !defined(CONFIG_8xx_CPUCLK_DEFAULT)
787 get_clocks, /* get CPU and bus clocks (etc.) */
788 #if defined(CONFIG_TQM8xxL) && !defined(CONFIG_TQM866M) \
789 && !defined(CONFIG_TQM885D)
790 adjust_sdram_tbs_8xx,
792 /* TODO: can we rename this to timer_init()? */
795 #if defined(CONFIG_ARM) || defined(CONFIG_MIPS) || defined(CONFIG_BLACKFIN)
796 timer_init, /* initialize timer */
798 #ifdef CONFIG_SYS_ALLOC_DPRAM
799 #if !defined(CONFIG_CPM2)
803 #if defined(CONFIG_BOARD_POSTCLK_INIT)
806 #ifdef CONFIG_FSL_ESDHC
812 env_init, /* initialize environment */
813 #if defined(CONFIG_8xx_CPUCLK_DEFAULT)
814 /* get CPU and bus clocks according to the environment variable */
816 /* adjust sdram refresh rate according to the new clock */
820 init_baud_rate, /* initialze baudrate settings */
821 serial_init, /* serial communications setup */
822 console_init_f, /* stage 1 init of console */
823 #ifdef CONFIG_SANDBOX
824 sandbox_early_getopt_check,
826 #ifdef CONFIG_OF_CONTROL
829 display_options, /* say that we are here */
830 display_text_info, /* show debugging info if required */
831 #if defined(CONFIG_MPC8260)
834 #endif /* CONFIG_MPC8260 */
835 #if defined(CONFIG_MPC83xx)
838 #if defined(CONFIG_PPC) || defined(CONFIG_M68K)
841 print_cpuinfo, /* display cpu info (and speed) */
842 #if defined(CONFIG_MPC5xxx)
844 #endif /* CONFIG_MPC5xxx */
845 #if defined(CONFIG_DISPLAY_BOARDINFO)
848 INIT_FUNC_WATCHDOG_INIT
849 #if defined(CONFIG_MISC_INIT_F)
852 INIT_FUNC_WATCHDOG_RESET
853 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C)
856 #if defined(CONFIG_HARD_SPI)
860 /* TODO: unify all these dram functions? */
861 #if defined(CONFIG_ARM) || defined(CONFIG_X86) || defined(CONFIG_MICROBLAZE) || defined(CONFIG_AVR32)
862 dram_init, /* configure available RAM banks */
864 #if defined(CONFIG_MIPS) || defined(CONFIG_PPC) || defined(CONFIG_M68K)
870 INIT_FUNC_WATCHDOG_RESET
871 #if defined(CONFIG_SYS_DRAM_TEST)
873 #endif /* CONFIG_SYS_DRAM_TEST */
874 INIT_FUNC_WATCHDOG_RESET
879 INIT_FUNC_WATCHDOG_RESET
881 * Now that we have DRAM mapped and working, we can
882 * relocate the code and continue running from DRAM.
884 * Reserve memory at end of RAM for (top down in that order):
885 * - area that won't get touched by U-Boot and Linux (optional)
886 * - kernel log buffer
890 * - board info struct
893 #if defined(CONFIG_BLACKFIN) || defined(CONFIG_NIOS2)
894 /* Blackfin u-boot monitor should be on top of the ram */
897 #if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR)
904 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) && \
912 /* TODO: Why the dependency on CONFIG_8xx? */
913 #if defined(CONFIG_VIDEO) && (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) && \
914 !defined(CONFIG_ARM) && !defined(CONFIG_X86) && \
915 !defined(CONFIG_BLACKFIN) && !defined(CONFIG_M68K)
918 #if !defined(CONFIG_BLACKFIN) && !defined(CONFIG_NIOS2)
921 #ifndef CONFIG_SPL_BUILD
932 #if defined(CONFIG_PPC) || defined(CONFIG_M68K)
934 INIT_FUNC_WATCHDOG_RESET
938 #ifdef CONFIG_SYS_EXTBDINFO
941 INIT_FUNC_WATCHDOG_RESET
944 #if defined(CONFIG_X86) || defined(CONFIG_ARC)
949 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX)
955 void board_init_f(ulong boot_flags)
957 #ifdef CONFIG_SYS_GENERIC_GLOBAL_DATA
959 * For some archtectures, global data is initialized and used before
960 * calling this function. The data should be preserved. For others,
961 * CONFIG_SYS_GENERIC_GLOBAL_DATA should be defined and use the stack
962 * here to host global data until relocation.
969 * Clear global data before it is accessed at debug print
970 * in initcall_run_list. Otherwise the debug print probably
971 * get the wrong vaule of gd->have_console.
976 gd->flags = boot_flags;
977 gd->have_console = 0;
979 if (initcall_run_list(init_sequence_f))
982 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX)
983 /* NOTREACHED - jump_to_copy() does not return */
988 #if defined(CONFIG_X86) || defined(CONFIG_ARC)
990 * For now this code is only used on x86.
992 * init_sequence_f_r is the list of init functions which are run when
993 * U-Boot is executing from Flash with a semi-limited 'C' environment.
994 * The following limitations must be considered when implementing an
996 * - 'static' variables are read-only
997 * - Global Data (gd->xxx) is read/write
999 * The '_f_r' sequence must, as a minimum, copy U-Boot to RAM (if
1000 * supported). It _should_, if possible, copy global data to RAM and
1001 * initialise the CPU caches (to speed up the relocation process)
1003 * NOTE: At present only x86 uses this route, but it is intended that
1004 * all archs will move to this when generic relocation is implemented.
1006 static init_fnc_t init_sequence_f_r[] = {
1012 void board_init_f_r(void)
1014 if (initcall_run_list(init_sequence_f_r))
1018 * U-Boot has been copied into SDRAM, the BSS has been cleared etc.
1019 * Transfer execution from Flash to RAM by calculating the address
1020 * of the in-RAM copy of board_init_r() and calling it
1022 (board_init_r + gd->reloc_off)((gd_t *)gd, gd->relocaddr);
1024 /* NOTREACHED - board_init_r() does not return */
1027 #endif /* CONFIG_X86 */
1030 ulong board_init_f_mem(ulong top)
1032 /* Leave space for the stack we are running with now */
1035 top -= sizeof(struct global_data);
1036 top = ALIGN(top, 16);
1037 gd = (struct global_data *)top;
1038 memset((void *)gd, '\0', sizeof(*gd));
1040 #ifdef CONFIG_SYS_MALLOC_F_LEN
1041 top -= CONFIG_SYS_MALLOC_F_LEN;
1042 gd->malloc_base = top;
1047 #endif /* !CONFIG_X86 */