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>
19 #if defined(CONFIG_CMD_IDE)
26 /* TODO: Can we move these into arch/ headers? */
42 #include <asm/errno.h>
47 #include <asm/sections.h>
49 #include <asm/init_helpers.h>
50 #include <asm/relocate.h>
53 #include <asm/state.h>
55 #include <linux/compiler.h>
58 * Pointer to initial global data area
60 * Here we initialize it if needed.
62 #ifdef XTRN_DECLARE_GLOBAL_DATA_PTR
63 #undef XTRN_DECLARE_GLOBAL_DATA_PTR
64 #define XTRN_DECLARE_GLOBAL_DATA_PTR /* empty = allocate here */
65 DECLARE_GLOBAL_DATA_PTR = (gd_t *) (CONFIG_SYS_INIT_GD_ADDR);
67 DECLARE_GLOBAL_DATA_PTR;
71 * sjg: IMO this code should be
72 * refactored to a single function, something like:
74 * void led_set_state(enum led_colour_t colour, int on);
76 /************************************************************************
77 * Coloured LED functionality
78 ************************************************************************
79 * May be supplied by boards if desired
81 inline void __coloured_LED_init(void) {}
82 void coloured_LED_init(void)
83 __attribute__((weak, alias("__coloured_LED_init")));
84 inline void __red_led_on(void) {}
85 void red_led_on(void) __attribute__((weak, alias("__red_led_on")));
86 inline void __red_led_off(void) {}
87 void red_led_off(void) __attribute__((weak, alias("__red_led_off")));
88 inline void __green_led_on(void) {}
89 void green_led_on(void) __attribute__((weak, alias("__green_led_on")));
90 inline void __green_led_off(void) {}
91 void green_led_off(void) __attribute__((weak, alias("__green_led_off")));
92 inline void __yellow_led_on(void) {}
93 void yellow_led_on(void) __attribute__((weak, alias("__yellow_led_on")));
94 inline void __yellow_led_off(void) {}
95 void yellow_led_off(void) __attribute__((weak, alias("__yellow_led_off")));
96 inline void __blue_led_on(void) {}
97 void blue_led_on(void) __attribute__((weak, alias("__blue_led_on")));
98 inline void __blue_led_off(void) {}
99 void blue_led_off(void) __attribute__((weak, alias("__blue_led_off")));
102 * Why is gd allocated a register? Prior to reloc it might be better to
103 * just pass it around to each function in this file?
105 * After reloc one could argue that it is hardly used and doesn't need
106 * to be in a register. Or if it is it should perhaps hold pointers to all
107 * global data for all modules, so that post-reloc we can avoid the massive
108 * literal pool we get on ARM. Or perhaps just encourage each module to use
113 * Could the CONFIG_SPL_BUILD infection become a flag in gd?
116 #if defined(CONFIG_WATCHDOG)
117 static int init_func_watchdog_init(void)
119 puts(" Watchdog enabled\n");
125 int init_func_watchdog_reset(void)
131 #endif /* CONFIG_WATCHDOG */
133 void __board_add_ram_info(int use_default)
135 /* please define platform specific board_add_ram_info() */
138 void board_add_ram_info(int)
139 __attribute__ ((weak, alias("__board_add_ram_info")));
141 static int init_baud_rate(void)
143 gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
147 static int display_text_info(void)
149 #ifndef CONFIG_SANDBOX
150 ulong bss_start, bss_end;
152 bss_start = (ulong)&__bss_start;
153 bss_end = (ulong)&__bss_end;
155 debug("U-Boot code: %08X -> %08lX BSS: -> %08lX\n",
156 CONFIG_SYS_TEXT_BASE, bss_start, bss_end);
159 #ifdef CONFIG_MODEM_SUPPORT
160 debug("Modem Support enabled\n");
162 #ifdef CONFIG_USE_IRQ
163 debug("IRQ Stack: %08lx\n", IRQ_STACK_START);
164 debug("FIQ Stack: %08lx\n", FIQ_STACK_START);
170 static int announce_dram_init(void)
176 #if defined(CONFIG_MIPS) || defined(CONFIG_PPC)
177 static int init_func_ram(void)
179 #ifdef CONFIG_BOARD_TYPES
180 int board_type = gd->board_type;
182 int board_type = 0; /* use dummy arg */
185 gd->ram_size = initdram(board_type);
187 if (gd->ram_size > 0)
190 puts("*** failed ***\n");
195 static int show_dram_config(void)
197 unsigned long long size;
199 #ifdef CONFIG_NR_DRAM_BANKS
202 debug("\nRAM Configuration:\n");
203 for (i = size = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
204 size += gd->bd->bi_dram[i].size;
205 debug("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
207 print_size(gd->bd->bi_dram[i].size, "\n");
215 print_size(size, "");
216 board_add_ram_info(0);
222 void __dram_init_banksize(void)
224 #if defined(CONFIG_NR_DRAM_BANKS) && defined(CONFIG_SYS_SDRAM_BASE)
225 gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
226 gd->bd->bi_dram[0].size = get_effective_memsize();
230 void dram_init_banksize(void)
231 __attribute__((weak, alias("__dram_init_banksize")));
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)
268 gd->mon_len = (ulong)&__bss_end - (ulong)_start;
269 #elif defined(CONFIG_SANDBOX)
270 gd->mon_len = (ulong)&_end - (ulong)_init;
272 /* TODO: use (ulong)&__bss_end - (ulong)&__text_start; ? */
273 gd->mon_len = (ulong)&__bss_end - CONFIG_SYS_MONITOR_BASE;
278 __weak int arch_cpu_init(void)
283 #ifdef CONFIG_OF_HOSTFILE
285 static int read_fdt_from_file(void)
287 struct sandbox_state *state = state_get_current();
288 const char *fname = state->fdt_fname;
294 blob = map_sysmem(CONFIG_SYS_FDT_LOAD_ADDR, 0);
295 if (!state->fdt_fname) {
296 err = fdt_create_empty_tree(blob, 256);
299 printf("Unable to create empty FDT: %s\n", fdt_strerror(err));
303 size = os_get_filesize(fname);
305 printf("Failed to file FDT file '%s'\n", fname);
308 fd = os_open(fname, OS_O_RDONLY);
310 printf("Failed to open FDT file '%s'\n", fname);
313 if (os_read(fd, blob, size) != size) {
326 #ifdef CONFIG_SANDBOX
327 static int setup_ram_buf(void)
329 struct sandbox_state *state = state_get_current();
331 gd->arch.ram_buf = state->ram_buf;
332 gd->ram_size = state->ram_size;
338 static int setup_fdt(void)
340 #ifdef CONFIG_OF_EMBED
341 /* Get a pointer to the FDT */
342 gd->fdt_blob = __dtb_dt_begin;
343 #elif defined CONFIG_OF_SEPARATE
344 /* FDT is at end of image */
345 gd->fdt_blob = (ulong *)&_end;
346 #elif defined(CONFIG_OF_HOSTFILE)
347 if (read_fdt_from_file()) {
348 puts("Failed to read control FDT\n");
352 /* Allow the early environment to override the fdt address */
353 gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
354 (uintptr_t)gd->fdt_blob);
358 /* Get the top of usable RAM */
359 __weak ulong board_get_usable_ram_top(ulong total_size)
364 static int setup_dest_addr(void)
366 debug("Monitor len: %08lX\n", gd->mon_len);
368 * Ram is setup, size stored in gd !!
370 debug("Ram size: %08lX\n", (ulong)gd->ram_size);
371 #if defined(CONFIG_SYS_MEM_TOP_HIDE)
373 * Subtract specified amount of memory to hide so that it won't
374 * get "touched" at all by U-Boot. By fixing up gd->ram_size
375 * the Linux kernel should now get passed the now "corrected"
376 * memory size and won't touch it either. This should work
377 * for arch/ppc and arch/powerpc. Only Linux board ports in
378 * arch/powerpc with bootwrapper support, that recalculate the
379 * memory size from the SDRAM controller setup will have to
382 gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
384 #ifdef CONFIG_SYS_SDRAM_BASE
385 gd->ram_top = CONFIG_SYS_SDRAM_BASE;
387 gd->ram_top += get_effective_memsize();
388 gd->ram_top = board_get_usable_ram_top(gd->mon_len);
389 gd->relocaddr = gd->ram_top;
390 debug("Ram top: %08lX\n", (ulong)gd->ram_top);
391 #if defined(CONFIG_MP) && (defined(CONFIG_MPC86xx) || defined(CONFIG_E500))
393 * We need to make sure the location we intend to put secondary core
394 * boot code is reserved and not used by any part of u-boot
396 if (gd->relocaddr > determine_mp_bootpg(NULL)) {
397 gd->relocaddr = determine_mp_bootpg(NULL);
398 debug("Reserving MP boot page to %08lx\n", gd->relocaddr);
404 #if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR)
405 static int reserve_logbuffer(void)
407 /* reserve kernel log buffer */
408 gd->relocaddr -= LOGBUFF_RESERVE;
409 debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN,
416 /* reserve protected RAM */
417 static int reserve_pram(void)
421 reg = getenv_ulong("pram", 10, CONFIG_PRAM);
422 gd->relocaddr -= (reg << 10); /* size is in kB */
423 debug("Reserving %ldk for protected RAM at %08lx\n", reg,
427 #endif /* CONFIG_PRAM */
429 /* Round memory pointer down to next 4 kB limit */
430 static int reserve_round_4k(void)
432 gd->relocaddr &= ~(4096 - 1);
436 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) && \
438 static int reserve_mmu(void)
440 /* reserve TLB table */
441 gd->arch.tlb_size = PGTABLE_SIZE;
442 gd->relocaddr -= gd->arch.tlb_size;
444 /* round down to next 64 kB limit */
445 gd->relocaddr &= ~(0x10000 - 1);
447 gd->arch.tlb_addr = gd->relocaddr;
448 debug("TLB table from %08lx to %08lx\n", gd->arch.tlb_addr,
449 gd->arch.tlb_addr + gd->arch.tlb_size);
455 static int reserve_lcd(void)
457 #ifdef CONFIG_FB_ADDR
458 gd->fb_base = CONFIG_FB_ADDR;
460 /* reserve memory for LCD display (always full pages) */
461 gd->relocaddr = lcd_setmem(gd->relocaddr);
462 gd->fb_base = gd->relocaddr;
463 #endif /* CONFIG_FB_ADDR */
466 #endif /* CONFIG_LCD */
468 static int reserve_trace(void)
471 gd->relocaddr -= CONFIG_TRACE_BUFFER_SIZE;
472 gd->trace_buff = map_sysmem(gd->relocaddr, CONFIG_TRACE_BUFFER_SIZE);
473 debug("Reserving %dk for trace data at: %08lx\n",
474 CONFIG_TRACE_BUFFER_SIZE >> 10, gd->relocaddr);
480 #if defined(CONFIG_VIDEO) && (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) \
481 && !defined(CONFIG_ARM) && !defined(CONFIG_X86)
482 static int reserve_video(void)
484 /* reserve memory for video display (always full pages) */
485 gd->relocaddr = video_setmem(gd->relocaddr);
486 gd->fb_base = gd->relocaddr;
492 static int reserve_uboot(void)
495 * reserve memory for U-Boot code, data & bss
496 * round down to next 4 kB limit
498 gd->relocaddr -= gd->mon_len;
499 gd->relocaddr &= ~(4096 - 1);
501 /* round down to next 64 kB limit so that IVPR stays aligned */
502 gd->relocaddr &= ~(65536 - 1);
505 debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10,
508 gd->start_addr_sp = gd->relocaddr;
513 #ifndef CONFIG_SPL_BUILD
514 /* reserve memory for malloc() area */
515 static int reserve_malloc(void)
517 gd->start_addr_sp = gd->start_addr_sp - TOTAL_MALLOC_LEN;
518 debug("Reserving %dk for malloc() at: %08lx\n",
519 TOTAL_MALLOC_LEN >> 10, gd->start_addr_sp);
523 /* (permanently) allocate a Board Info struct */
524 static int reserve_board(void)
526 gd->start_addr_sp -= sizeof(bd_t);
527 gd->bd = (bd_t *)map_sysmem(gd->start_addr_sp, sizeof(bd_t));
528 memset(gd->bd, '\0', sizeof(bd_t));
529 debug("Reserving %zu Bytes for Board Info at: %08lx\n",
530 sizeof(bd_t), gd->start_addr_sp);
535 static int setup_machine(void)
537 #ifdef CONFIG_MACH_TYPE
538 gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
543 static int reserve_global_data(void)
545 gd->start_addr_sp -= sizeof(gd_t);
546 gd->new_gd = (gd_t *)map_sysmem(gd->start_addr_sp, sizeof(gd_t));
547 debug("Reserving %zu Bytes for Global Data at: %08lx\n",
548 sizeof(gd_t), gd->start_addr_sp);
552 static int reserve_fdt(void)
555 * If the device tree is sitting immediate above our image then we
556 * must relocate it. If it is embedded in the data section, then it
557 * will be relocated with other data.
560 gd->fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
562 gd->start_addr_sp -= gd->fdt_size;
563 gd->new_fdt = map_sysmem(gd->start_addr_sp, gd->fdt_size);
564 debug("Reserving %lu Bytes for FDT at: %08lx\n",
565 gd->fdt_size, gd->start_addr_sp);
571 static int reserve_stacks(void)
573 #ifdef CONFIG_SPL_BUILD
575 gd->start_addr_sp -= 128; /* leave 32 words for abort-stack */
576 gd->irq_sp = gd->start_addr_sp;
583 /* setup stack pointer for exceptions */
584 gd->start_addr_sp -= 16;
585 gd->start_addr_sp &= ~0xf;
586 gd->irq_sp = gd->start_addr_sp;
589 * Handle architecture-specific things here
590 * TODO(sjg@chromium.org): Perhaps create arch_reserve_stack()
591 * to handle this and put in arch/xxx/lib/stack.c
593 # if defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
594 # ifdef CONFIG_USE_IRQ
595 gd->start_addr_sp -= (CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ);
596 debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
597 CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ, gd->start_addr_sp);
599 /* 8-byte alignment for ARM ABI compliance */
600 gd->start_addr_sp &= ~0x07;
602 /* leave 3 words for abort-stack, plus 1 for alignment */
603 gd->start_addr_sp -= 16;
604 # elif defined(CONFIG_PPC)
605 /* Clear initial stack frame */
606 s = (ulong *) gd->start_addr_sp;
607 *s = 0; /* Terminate back chain */
608 *++s = 0; /* NULL return address */
609 # endif /* Architecture specific code */
615 static int display_new_sp(void)
617 debug("New Stack Pointer is: %08lx\n", gd->start_addr_sp);
623 static int setup_board_part1(void)
628 * Save local variables to board info struct
631 bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; /* start of memory */
632 bd->bi_memsize = gd->ram_size; /* size in bytes */
634 #ifdef CONFIG_SYS_SRAM_BASE
635 bd->bi_sramstart = CONFIG_SYS_SRAM_BASE; /* start of SRAM */
636 bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE; /* size of SRAM */
639 #if defined(CONFIG_8xx) || defined(CONFIG_MPC8260) || defined(CONFIG_5xx) || \
640 defined(CONFIG_E500) || defined(CONFIG_MPC86xx)
641 bd->bi_immr_base = CONFIG_SYS_IMMR; /* base of IMMR register */
643 #if defined(CONFIG_MPC5xxx)
644 bd->bi_mbar_base = CONFIG_SYS_MBAR; /* base of internal registers */
646 #if defined(CONFIG_MPC83xx)
647 bd->bi_immrbar = CONFIG_SYS_IMMR;
653 static int setup_board_part2(void)
657 bd->bi_intfreq = gd->cpu_clk; /* Internal Freq, in Hz */
658 bd->bi_busfreq = gd->bus_clk; /* Bus Freq, in Hz */
659 #if defined(CONFIG_CPM2)
660 bd->bi_cpmfreq = gd->arch.cpm_clk;
661 bd->bi_brgfreq = gd->arch.brg_clk;
662 bd->bi_sccfreq = gd->arch.scc_clk;
663 bd->bi_vco = gd->arch.vco_out;
664 #endif /* CONFIG_CPM2 */
665 #if defined(CONFIG_MPC512X)
666 bd->bi_ipsfreq = gd->arch.ips_clk;
667 #endif /* CONFIG_MPC512X */
668 #if defined(CONFIG_MPC5xxx)
669 bd->bi_ipbfreq = gd->arch.ipb_clk;
670 bd->bi_pcifreq = gd->pci_clk;
671 #endif /* CONFIG_MPC5xxx */
677 #ifdef CONFIG_SYS_EXTBDINFO
678 static int setup_board_extra(void)
682 strncpy((char *) bd->bi_s_version, "1.2", sizeof(bd->bi_s_version));
683 strncpy((char *) bd->bi_r_version, U_BOOT_VERSION,
684 sizeof(bd->bi_r_version));
686 bd->bi_procfreq = gd->cpu_clk; /* Processor Speed, In Hz */
687 bd->bi_plb_busfreq = gd->bus_clk;
688 #if defined(CONFIG_405GP) || defined(CONFIG_405EP) || \
689 defined(CONFIG_440EP) || defined(CONFIG_440GR) || \
690 defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
691 bd->bi_pci_busfreq = get_PCI_freq();
692 bd->bi_opbfreq = get_OPB_freq();
693 #elif defined(CONFIG_XILINX_405)
694 bd->bi_pci_busfreq = get_PCI_freq();
702 static int init_post(void)
704 post_bootmode_init();
705 post_run(NULL, POST_ROM | post_bootmode_get(0));
711 static int setup_dram_config(void)
713 /* Ram is board specific, so move it to board code ... */
714 dram_init_banksize();
719 static int reloc_fdt(void)
722 memcpy(gd->new_fdt, gd->fdt_blob, gd->fdt_size);
723 gd->fdt_blob = gd->new_fdt;
729 static int setup_reloc(void)
731 gd->reloc_off = gd->relocaddr - CONFIG_SYS_TEXT_BASE;
732 memcpy(gd->new_gd, (char *)gd, sizeof(gd_t));
734 debug("Relocation Offset is: %08lx\n", gd->reloc_off);
735 debug("Relocating to %08lx, new gd at %08lx, sp at %08lx\n",
736 gd->relocaddr, (ulong)map_to_sysmem(gd->new_gd),
742 /* ARM calls relocate_code from its crt0.S */
743 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX)
745 static int jump_to_copy(void)
748 * x86 is special, but in a nice way. It uses a trampoline which
749 * enables the dcache if possible.
751 * For now, other archs use relocate_code(), which is implemented
752 * similarly for all archs. When we do generic relocation, hopefully
753 * we can make all archs enable the dcache prior to relocation.
757 * SDRAM and console are now initialised. The final stack can now
758 * be setup in SDRAM. Code execution will continue in Flash, but
759 * with the stack in SDRAM and Global Data in temporary memory
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 mark_bootstage(void)
774 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f");
779 static init_fnc_t init_sequence_f[] = {
780 #ifdef CONFIG_SANDBOX
786 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
787 /* TODO: can this go into arch_cpu_init()? */
790 arch_cpu_init, /* basic arch cpu dependent setup */
792 cpu_init_f, /* TODO(sjg@chromium.org): remove */
793 # ifdef CONFIG_OF_CONTROL
794 find_fdt, /* TODO(sjg@chromium.org): remove */
798 #ifdef CONFIG_OF_CONTROL
801 #if defined(CONFIG_BOARD_EARLY_INIT_F)
804 /* TODO: can any of this go into arch_cpu_init()? */
805 #if defined(CONFIG_PPC) && !defined(CONFIG_8xx_CPUCLK_DEFAULT)
806 get_clocks, /* get CPU and bus clocks (etc.) */
807 #if defined(CONFIG_TQM8xxL) && !defined(CONFIG_TQM866M) \
808 && !defined(CONFIG_TQM885D)
809 adjust_sdram_tbs_8xx,
811 /* TODO: can we rename this to timer_init()? */
814 #if defined(CONFIG_ARM) || defined(CONFIG_MIPS)
815 timer_init, /* initialize timer */
817 #ifdef CONFIG_SYS_ALLOC_DPRAM
818 #if !defined(CONFIG_CPM2)
822 #if defined(CONFIG_BOARD_POSTCLK_INIT)
825 #ifdef CONFIG_FSL_ESDHC
828 env_init, /* initialize environment */
829 #if defined(CONFIG_8xx_CPUCLK_DEFAULT)
830 /* get CPU and bus clocks according to the environment variable */
832 /* adjust sdram refresh rate according to the new clock */
836 init_baud_rate, /* initialze baudrate settings */
837 serial_init, /* serial communications setup */
838 console_init_f, /* stage 1 init of console */
839 #ifdef CONFIG_SANDBOX
840 sandbox_early_getopt_check,
842 #ifdef CONFIG_OF_CONTROL
845 display_options, /* say that we are here */
846 display_text_info, /* show debugging info if required */
847 #if defined(CONFIG_MPC8260)
850 #endif /* CONFIG_MPC8260 */
851 #if defined(CONFIG_MPC83xx)
857 print_cpuinfo, /* display cpu info (and speed) */
858 #if defined(CONFIG_MPC5xxx)
860 #endif /* CONFIG_MPC5xxx */
861 #if defined(CONFIG_DISPLAY_BOARDINFO)
862 checkboard, /* display board info */
864 INIT_FUNC_WATCHDOG_INIT
865 #if defined(CONFIG_MISC_INIT_F)
868 INIT_FUNC_WATCHDOG_RESET
869 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SYS_I2C)
872 #if defined(CONFIG_HARD_SPI)
876 dram_init_f, /* configure available RAM banks */
877 calculate_relocation_address,
880 /* TODO: unify all these dram functions? */
882 dram_init, /* configure available RAM banks */
884 #if defined(CONFIG_MIPS) || defined(CONFIG_PPC)
890 INIT_FUNC_WATCHDOG_RESET
891 #if defined(CONFIG_SYS_DRAM_TEST)
893 #endif /* CONFIG_SYS_DRAM_TEST */
894 INIT_FUNC_WATCHDOG_RESET
899 INIT_FUNC_WATCHDOG_RESET
901 * Now that we have DRAM mapped and working, we can
902 * relocate the code and continue running from DRAM.
904 * Reserve memory at end of RAM for (top down in that order):
905 * - area that won't get touched by U-Boot and Linux (optional)
906 * - kernel log buffer
910 * - board info struct
913 #if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR)
920 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) && \
928 /* TODO: Why the dependency on CONFIG_8xx? */
929 #if defined(CONFIG_VIDEO) && (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) \
930 && !defined(CONFIG_ARM) && !defined(CONFIG_X86)
934 #ifndef CONFIG_SPL_BUILD
946 INIT_FUNC_WATCHDOG_RESET
950 #ifdef CONFIG_SYS_EXTBDINFO
953 INIT_FUNC_WATCHDOG_RESET
956 #if !defined(CONFIG_ARM) && !defined(CONFIG_SANDBOX)
962 void board_init_f(ulong boot_flags)
964 #ifdef CONFIG_SYS_GENERIC_GLOBAL_DATA
966 * For some archtectures, global data is initialized and used before
967 * calling this function. The data should be preserved. For others,
968 * CONFIG_SYS_GENERIC_GLOBAL_DATA should be defined and use the stack
969 * here to host global data until relocation.
976 * Clear global data before it is accessed at debug print
977 * in initcall_run_list. Otherwise the debug print probably
978 * get the wrong vaule of gd->have_console.
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 /* NOTREACHED - jump_to_copy() does not return */
997 * For now this code is only used on x86.
999 * init_sequence_f_r is the list of init functions which are run when
1000 * U-Boot is executing from Flash with a semi-limited 'C' environment.
1001 * The following limitations must be considered when implementing an
1003 * - 'static' variables are read-only
1004 * - Global Data (gd->xxx) is read/write
1006 * The '_f_r' sequence must, as a minimum, copy U-Boot to RAM (if
1007 * supported). It _should_, if possible, copy global data to RAM and
1008 * initialise the CPU caches (to speed up the relocation process)
1010 * NOTE: At present only x86 uses this route, but it is intended that
1011 * all archs will move to this when generic relocation is implemented.
1013 static init_fnc_t init_sequence_f_r[] = {
1017 do_elf_reloc_fixups,
1022 void board_init_f_r(void)
1024 if (initcall_run_list(init_sequence_f_r))
1028 * U-Boot has been copied into SDRAM, the BSS has been cleared etc.
1029 * Transfer execution from Flash to RAM by calculating the address
1030 * of the in-RAM copy of board_init_r() and calling it
1032 (board_init_r + gd->reloc_off)(gd, gd->relocaddr);
1034 /* NOTREACHED - board_init_r() does not return */
1037 #endif /* CONFIG_X86 */