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 * See file CREDITS for list of people who contributed to this
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License as
15 * published by the Free Software Foundation; either version 2 of
16 * the License, or (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
30 #include <linux/compiler.h>
32 #include <environment.h>
35 #if defined(CONFIG_CMD_IDE)
42 /* TODO: Can we move these into arch/ headers? */
57 #include <asm/errno.h>
62 #include <asm/sections.h>
64 #include <asm/init_helpers.h>
65 #include <asm/relocate.h>
68 #include <asm/state.h>
70 #include <linux/compiler.h>
73 * Pointer to initial global data area
75 * Here we initialize it if needed.
77 #ifdef XTRN_DECLARE_GLOBAL_DATA_PTR
78 #undef XTRN_DECLARE_GLOBAL_DATA_PTR
79 #define XTRN_DECLARE_GLOBAL_DATA_PTR /* empty = allocate here */
80 DECLARE_GLOBAL_DATA_PTR = (gd_t *) (CONFIG_SYS_INIT_GD_ADDR);
82 DECLARE_GLOBAL_DATA_PTR;
86 * sjg: IMO this code should be
87 * refactored to a single function, something like:
89 * void led_set_state(enum led_colour_t colour, int on);
91 /************************************************************************
92 * Coloured LED functionality
93 ************************************************************************
94 * May be supplied by boards if desired
96 inline void __coloured_LED_init(void) {}
97 void coloured_LED_init(void)
98 __attribute__((weak, alias("__coloured_LED_init")));
99 inline void __red_led_on(void) {}
100 void red_led_on(void) __attribute__((weak, alias("__red_led_on")));
101 inline void __red_led_off(void) {}
102 void red_led_off(void) __attribute__((weak, alias("__red_led_off")));
103 inline void __green_led_on(void) {}
104 void green_led_on(void) __attribute__((weak, alias("__green_led_on")));
105 inline void __green_led_off(void) {}
106 void green_led_off(void) __attribute__((weak, alias("__green_led_off")));
107 inline void __yellow_led_on(void) {}
108 void yellow_led_on(void) __attribute__((weak, alias("__yellow_led_on")));
109 inline void __yellow_led_off(void) {}
110 void yellow_led_off(void) __attribute__((weak, alias("__yellow_led_off")));
111 inline void __blue_led_on(void) {}
112 void blue_led_on(void) __attribute__((weak, alias("__blue_led_on")));
113 inline void __blue_led_off(void) {}
114 void blue_led_off(void) __attribute__((weak, alias("__blue_led_off")));
117 * Why is gd allocated a register? Prior to reloc it might be better to
118 * just pass it around to each function in this file?
120 * After reloc one could argue that it is hardly used and doesn't need
121 * to be in a register. Or if it is it should perhaps hold pointers to all
122 * global data for all modules, so that post-reloc we can avoid the massive
123 * literal pool we get on ARM. Or perhaps just encourage each module to use
128 * Could the CONFIG_SPL_BUILD infection become a flag in gd?
131 #if defined(CONFIG_WATCHDOG)
132 static int init_func_watchdog_init(void)
134 puts(" Watchdog enabled\n");
140 int init_func_watchdog_reset(void)
146 #endif /* CONFIG_WATCHDOG */
148 void __board_add_ram_info(int use_default)
150 /* please define platform specific board_add_ram_info() */
153 void board_add_ram_info(int)
154 __attribute__ ((weak, alias("__board_add_ram_info")));
156 static int init_baud_rate(void)
158 gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
162 static int display_text_info(void)
164 #ifndef CONFIG_SANDBOX
165 ulong bss_start, bss_end;
167 #ifdef CONFIG_SYS_SYM_OFFSETS
168 bss_start = _bss_start_ofs + _TEXT_BASE;
169 bss_end = _bss_end_ofs + _TEXT_BASE;
171 bss_start = (ulong)&__bss_start;
172 bss_end = (ulong)&__bss_end;
174 debug("U-Boot code: %08X -> %08lX BSS: -> %08lX\n",
175 CONFIG_SYS_TEXT_BASE, bss_start, bss_end);
178 #ifdef CONFIG_MODEM_SUPPORT
179 debug("Modem Support enabled\n");
181 #ifdef CONFIG_USE_IRQ
182 debug("IRQ Stack: %08lx\n", IRQ_STACK_START);
183 debug("FIQ Stack: %08lx\n", FIQ_STACK_START);
189 static int announce_dram_init(void)
196 static int init_func_ram(void)
198 #ifdef CONFIG_BOARD_TYPES
199 int board_type = gd->board_type;
201 int board_type = 0; /* use dummy arg */
204 gd->ram_size = initdram(board_type);
206 if (gd->ram_size > 0)
209 puts("*** failed ***\n");
214 static int show_dram_config(void)
218 #ifdef CONFIG_NR_DRAM_BANKS
221 debug("\nRAM Configuration:\n");
222 for (i = size = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
223 size += gd->bd->bi_dram[i].size;
224 debug("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
226 print_size(gd->bd->bi_dram[i].size, "\n");
234 print_size(size, "");
235 board_add_ram_info(0);
241 ulong get_effective_memsize(void)
243 #ifndef CONFIG_VERY_BIG_RAM
246 /* limit stack to what we can reasonable map */
247 return ((gd->ram_size > CONFIG_MAX_MEM_MAPPED) ?
248 CONFIG_MAX_MEM_MAPPED : gd->ram_size);
252 void __dram_init_banksize(void)
254 #if defined(CONFIG_NR_DRAM_BANKS) && defined(CONFIG_SYS_SDRAM_BASE)
255 gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
256 gd->bd->bi_dram[0].size = get_effective_memsize();
260 void dram_init_banksize(void)
261 __attribute__((weak, alias("__dram_init_banksize")));
263 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
264 static int init_func_i2c(void)
267 i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
273 #if defined(CONFIG_HARD_SPI)
274 static int init_func_spi(void)
284 static int zero_global_data(void)
286 memset((void *)gd, '\0', sizeof(gd_t));
291 static int setup_mon_len(void)
293 #ifdef CONFIG_SYS_SYM_OFFSETS
294 gd->mon_len = _bss_end_ofs;
295 #elif defined(CONFIG_SANDBOX)
296 gd->mon_len = (ulong)&_end - (ulong)_init;
298 /* TODO: use (ulong)&__bss_end - (ulong)&__text_start; ? */
299 gd->mon_len = (ulong)&__bss_end - CONFIG_SYS_MONITOR_BASE;
304 __weak int arch_cpu_init(void)
309 #ifdef CONFIG_OF_HOSTFILE
311 #define CHECK(x) err = (x); if (err) goto failed;
313 /* Create an empty device tree blob */
314 static int make_empty_fdt(void *fdt)
318 CHECK(fdt_create(fdt, 256));
319 CHECK(fdt_finish_reservemap(fdt));
320 CHECK(fdt_begin_node(fdt, ""));
321 CHECK(fdt_end_node(fdt));
322 CHECK(fdt_finish(fdt));
326 printf("Unable to create empty FDT: %s\n", fdt_strerror(err));
330 static int read_fdt_from_file(void)
332 struct sandbox_state *state = state_get_current();
337 blob = map_sysmem(CONFIG_SYS_FDT_LOAD_ADDR, 0);
338 if (!state->fdt_fname) {
339 err = make_empty_fdt(blob);
344 err = fs_set_blk_dev("host", NULL, FS_TYPE_SANDBOX);
347 size = fs_read(state->fdt_fname, CONFIG_SYS_FDT_LOAD_ADDR, 0, 0);
358 #ifdef CONFIG_SANDBOX
359 static int setup_ram_buf(void)
361 gd->arch.ram_buf = os_malloc(CONFIG_SYS_SDRAM_SIZE);
362 assert(gd->arch.ram_buf);
363 gd->ram_size = CONFIG_SYS_SDRAM_SIZE;
369 static int setup_fdt(void)
371 #ifdef CONFIG_OF_EMBED
372 /* Get a pointer to the FDT */
373 gd->fdt_blob = _binary_dt_dtb_start;
374 #elif defined CONFIG_OF_SEPARATE
375 /* FDT is at end of image */
376 # ifdef CONFIG_SYS_SYM_OFFSETS
377 gd->fdt_blob = (void *)(_end_ofs + CONFIG_SYS_TEXT_BASE);
379 gd->fdt_blob = (ulong *)&_end;
381 #elif defined(CONFIG_OF_HOSTFILE)
382 if (read_fdt_from_file()) {
383 puts("Failed to read control FDT\n");
387 /* Allow the early environment to override the fdt address */
388 gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
389 (uintptr_t)gd->fdt_blob);
393 /* Get the top of usable RAM */
394 __weak ulong board_get_usable_ram_top(ulong total_size)
399 static int setup_dest_addr(void)
401 debug("Monitor len: %08lX\n", gd->mon_len);
403 * Ram is setup, size stored in gd !!
405 debug("Ram size: %08lX\n", (ulong)gd->ram_size);
406 #if defined(CONFIG_SYS_MEM_TOP_HIDE)
408 * Subtract specified amount of memory to hide so that it won't
409 * get "touched" at all by U-Boot. By fixing up gd->ram_size
410 * the Linux kernel should now get passed the now "corrected"
411 * memory size and won't touch it either. This should work
412 * for arch/ppc and arch/powerpc. Only Linux board ports in
413 * arch/powerpc with bootwrapper support, that recalculate the
414 * memory size from the SDRAM controller setup will have to
417 gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
419 #ifdef CONFIG_SYS_SDRAM_BASE
420 gd->ram_top = CONFIG_SYS_SDRAM_BASE;
422 gd->ram_top += get_effective_memsize();
423 gd->ram_top = board_get_usable_ram_top(gd->mon_len);
424 gd->relocaddr = gd->ram_top;
425 debug("Ram top: %08lX\n", (ulong)gd->ram_top);
426 #if defined(CONFIG_MP) && (defined(CONFIG_MPC86xx) || defined(CONFIG_E500))
428 * We need to make sure the location we intend to put secondary core
429 * boot code is reserved and not used by any part of u-boot
431 if (gd->relocaddr > determine_mp_bootpg(NULL)) {
432 gd->relocaddr = determine_mp_bootpg(NULL);
433 debug("Reserving MP boot page to %08lx\n", gd->relocaddr);
439 #if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR)
440 static int reserve_logbuffer(void)
442 /* reserve kernel log buffer */
443 gd->relocaddr -= LOGBUFF_RESERVE;
444 debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN,
451 /* reserve protected RAM */
452 static int reserve_pram(void)
456 reg = getenv_ulong("pram", 10, CONFIG_PRAM);
457 gd->relocaddr -= (reg << 10); /* size is in kB */
458 debug("Reserving %ldk for protected RAM at %08lx\n", reg,
462 #endif /* CONFIG_PRAM */
464 /* Round memory pointer down to next 4 kB limit */
465 static int reserve_round_4k(void)
467 gd->relocaddr &= ~(4096 - 1);
471 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) && \
473 static int reserve_mmu(void)
475 /* reserve TLB table */
476 gd->arch.tlb_size = 4096 * 4;
477 gd->relocaddr -= gd->arch.tlb_size;
479 /* round down to next 64 kB limit */
480 gd->relocaddr &= ~(0x10000 - 1);
482 gd->arch.tlb_addr = gd->relocaddr;
483 debug("TLB table from %08lx to %08lx\n", gd->arch.tlb_addr,
484 gd->arch.tlb_addr + gd->arch.tlb_size);
490 static int reserve_lcd(void)
492 #ifdef CONFIG_FB_ADDR
493 gd->fb_base = CONFIG_FB_ADDR;
495 /* reserve memory for LCD display (always full pages) */
496 gd->relocaddr = lcd_setmem(gd->relocaddr);
497 gd->fb_base = gd->relocaddr;
498 #endif /* CONFIG_FB_ADDR */
501 #endif /* CONFIG_LCD */
503 #if defined(CONFIG_VIDEO) && (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) \
504 && !defined(CONFIG_ARM) && !defined(CONFIG_X86)
505 static int reserve_video(void)
507 /* reserve memory for video display (always full pages) */
508 gd->relocaddr = video_setmem(gd->relocaddr);
509 gd->fb_base = gd->relocaddr;
515 static int reserve_uboot(void)
518 * reserve memory for U-Boot code, data & bss
519 * round down to next 4 kB limit
521 gd->relocaddr -= gd->mon_len;
522 gd->relocaddr &= ~(4096 - 1);
524 /* round down to next 64 kB limit so that IVPR stays aligned */
525 gd->relocaddr &= ~(65536 - 1);
528 debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10,
531 gd->start_addr_sp = gd->relocaddr;
536 #ifndef CONFIG_SPL_BUILD
537 /* reserve memory for malloc() area */
538 static int reserve_malloc(void)
540 gd->start_addr_sp = gd->start_addr_sp - TOTAL_MALLOC_LEN;
541 debug("Reserving %dk for malloc() at: %08lx\n",
542 TOTAL_MALLOC_LEN >> 10, gd->start_addr_sp);
546 /* (permanently) allocate a Board Info struct */
547 static int reserve_board(void)
549 gd->start_addr_sp -= sizeof(bd_t);
550 gd->bd = (bd_t *)map_sysmem(gd->start_addr_sp, sizeof(bd_t));
551 memset(gd->bd, '\0', sizeof(bd_t));
552 debug("Reserving %zu Bytes for Board Info at: %08lx\n",
553 sizeof(bd_t), gd->start_addr_sp);
558 static int setup_machine(void)
560 #ifdef CONFIG_MACH_TYPE
561 gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
566 static int reserve_global_data(void)
568 gd->start_addr_sp -= sizeof(gd_t);
569 gd->new_gd = (gd_t *)map_sysmem(gd->start_addr_sp, sizeof(gd_t));
570 debug("Reserving %zu Bytes for Global Data at: %08lx\n",
571 sizeof(gd_t), gd->start_addr_sp);
575 static int reserve_fdt(void)
578 * If the device tree is sitting immediate above our image then we
579 * must relocate it. If it is embedded in the data section, then it
580 * will be relocated with other data.
583 gd->fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
585 gd->start_addr_sp -= gd->fdt_size;
586 gd->new_fdt = map_sysmem(gd->start_addr_sp, gd->fdt_size);
587 debug("Reserving %lu Bytes for FDT at: %08lx\n",
588 gd->fdt_size, gd->start_addr_sp);
594 static int reserve_stacks(void)
596 #ifdef CONFIG_SPL_BUILD
598 gd->start_addr_sp -= 128; /* leave 32 words for abort-stack */
599 gd->irq_sp = gd->start_addr_sp;
606 /* setup stack pointer for exceptions */
607 gd->start_addr_sp -= 16;
608 gd->start_addr_sp &= ~0xf;
609 gd->irq_sp = gd->start_addr_sp;
612 * Handle architecture-specific things here
613 * TODO(sjg@chromium.org): Perhaps create arch_reserve_stack()
614 * to handle this and put in arch/xxx/lib/stack.c
617 # ifdef CONFIG_USE_IRQ
618 gd->start_addr_sp -= (CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ);
619 debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
620 CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ, gd->start_addr_sp);
622 /* 8-byte alignment for ARM ABI compliance */
623 gd->start_addr_sp &= ~0x07;
625 /* leave 3 words for abort-stack, plus 1 for alignment */
626 gd->start_addr_sp -= 16;
627 # elif defined(CONFIG_PPC)
628 /* Clear initial stack frame */
629 s = (ulong *) gd->start_addr_sp;
630 *s = 0; /* Terminate back chain */
631 *++s = 0; /* NULL return address */
632 # endif /* Architecture specific code */
638 static int display_new_sp(void)
640 debug("New Stack Pointer is: %08lx\n", gd->start_addr_sp);
646 static int setup_board_part1(void)
651 * Save local variables to board info struct
654 bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; /* start of memory */
655 bd->bi_memsize = gd->ram_size; /* size in bytes */
657 #ifdef CONFIG_SYS_SRAM_BASE
658 bd->bi_sramstart = CONFIG_SYS_SRAM_BASE; /* start of SRAM */
659 bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE; /* size of SRAM */
662 #if defined(CONFIG_8xx) || defined(CONFIG_8260) || defined(CONFIG_5xx) || \
663 defined(CONFIG_E500) || defined(CONFIG_MPC86xx)
664 bd->bi_immr_base = CONFIG_SYS_IMMR; /* base of IMMR register */
666 #if defined(CONFIG_MPC5xxx)
667 bd->bi_mbar_base = CONFIG_SYS_MBAR; /* base of internal registers */
669 #if defined(CONFIG_MPC83xx)
670 bd->bi_immrbar = CONFIG_SYS_IMMR;
676 static int setup_board_part2(void)
680 bd->bi_intfreq = gd->cpu_clk; /* Internal Freq, in Hz */
681 bd->bi_busfreq = gd->bus_clk; /* Bus Freq, in Hz */
682 #if defined(CONFIG_CPM2)
683 bd->bi_cpmfreq = gd->arch.cpm_clk;
684 bd->bi_brgfreq = gd->arch.brg_clk;
685 bd->bi_sccfreq = gd->arch.scc_clk;
686 bd->bi_vco = gd->arch.vco_out;
687 #endif /* CONFIG_CPM2 */
688 #if defined(CONFIG_MPC512X)
689 bd->bi_ipsfreq = gd->arch.ips_clk;
690 #endif /* CONFIG_MPC512X */
691 #if defined(CONFIG_MPC5xxx)
692 bd->bi_ipbfreq = gd->arch.ipb_clk;
693 bd->bi_pcifreq = gd->pci_clk;
694 #endif /* CONFIG_MPC5xxx */
700 #ifdef CONFIG_SYS_EXTBDINFO
701 static int setup_board_extra(void)
705 strncpy((char *) bd->bi_s_version, "1.2", sizeof(bd->bi_s_version));
706 strncpy((char *) bd->bi_r_version, U_BOOT_VERSION,
707 sizeof(bd->bi_r_version));
709 bd->bi_procfreq = gd->cpu_clk; /* Processor Speed, In Hz */
710 bd->bi_plb_busfreq = gd->bus_clk;
711 #if defined(CONFIG_405GP) || defined(CONFIG_405EP) || \
712 defined(CONFIG_440EP) || defined(CONFIG_440GR) || \
713 defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
714 bd->bi_pci_busfreq = get_PCI_freq();
715 bd->bi_opbfreq = get_OPB_freq();
716 #elif defined(CONFIG_XILINX_405)
717 bd->bi_pci_busfreq = get_PCI_freq();
725 static int init_post(void)
727 post_bootmode_init();
728 post_run(NULL, POST_ROM | post_bootmode_get(0));
734 static int setup_baud_rate(void)
736 /* Ick, can we get rid of this line? */
737 gd->bd->bi_baudrate = gd->baudrate;
742 static int setup_dram_config(void)
744 /* Ram is board specific, so move it to board code ... */
745 dram_init_banksize();
750 static int reloc_fdt(void)
753 memcpy(gd->new_fdt, gd->fdt_blob, gd->fdt_size);
754 gd->fdt_blob = gd->new_fdt;
760 static int setup_reloc(void)
762 gd->reloc_off = gd->relocaddr - CONFIG_SYS_TEXT_BASE;
763 memcpy(gd->new_gd, (char *)gd, sizeof(gd_t));
765 debug("Relocation Offset is: %08lx\n", gd->reloc_off);
766 debug("Relocating to %08lx, new gd at %08lx, sp at %08lx\n",
767 gd->relocaddr, (ulong)map_to_sysmem(gd->new_gd),
773 /* ARM calls relocate_code from its crt0.S */
774 #if !defined(CONFIG_ARM)
776 static int jump_to_copy(void)
779 * x86 is special, but in a nice way. It uses a trampoline which
780 * enables the dcache if possible.
782 * For now, other archs use relocate_code(), which is implemented
783 * similarly for all archs. When we do generic relocation, hopefully
784 * we can make all archs enable the dcache prior to relocation.
788 * SDRAM and console are now initialised. The final stack can now
789 * be setup in SDRAM. Code execution will continue in Flash, but
790 * with the stack in SDRAM and Global Data in temporary memory
793 board_init_f_r_trampoline(gd->start_addr_sp);
794 #elif defined(CONFIG_SANDBOX)
795 board_init_r(gd->new_gd, 0);
797 relocate_code(gd->start_addr_sp, gd->new_gd, gd->relocaddr);
804 /* Record the board_init_f() bootstage (after arch_cpu_init()) */
805 static int mark_bootstage(void)
807 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f");
812 static init_fnc_t init_sequence_f[] = {
813 #if !defined(CONFIG_CPM2) && !defined(CONFIG_MPC512X) && \
814 !defined(CONFIG_MPC83xx) && !defined(CONFIG_MPC85xx) && \
815 !defined(CONFIG_MPC86xx) && !defined(CONFIG_X86)
818 #ifdef CONFIG_SANDBOX
823 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
824 /* TODO: can this go into arch_cpu_init()? */
827 arch_cpu_init, /* basic arch cpu dependent setup */
829 cpu_init_f, /* TODO(sjg@chromium.org): remove */
830 # ifdef CONFIG_OF_CONTROL
831 find_fdt, /* TODO(sjg@chromium.org): remove */
835 #ifdef CONFIG_OF_CONTROL
838 #if defined(CONFIG_BOARD_EARLY_INIT_F)
841 /* TODO: can any of this go into arch_cpu_init()? */
842 #if defined(CONFIG_PPC) && !defined(CONFIG_8xx_CPUCLK_DEFAULT)
843 get_clocks, /* get CPU and bus clocks (etc.) */
844 #if defined(CONFIG_TQM8xxL) && !defined(CONFIG_TQM866M) \
845 && !defined(CONFIG_TQM885D)
846 adjust_sdram_tbs_8xx,
848 /* TODO: can we rename this to timer_init()? */
852 timer_init, /* initialize timer */
854 #ifdef CONFIG_SYS_ALLOC_DPRAM
855 #if !defined(CONFIG_CPM2)
859 #if defined(CONFIG_BOARD_POSTCLK_INIT)
862 #ifdef CONFIG_FSL_ESDHC
865 env_init, /* initialize environment */
866 #if defined(CONFIG_8xx_CPUCLK_DEFAULT)
867 /* get CPU and bus clocks according to the environment variable */
869 /* adjust sdram refresh rate according to the new clock */
873 init_baud_rate, /* initialze baudrate settings */
874 serial_init, /* serial communications setup */
875 console_init_f, /* stage 1 init of console */
876 #ifdef CONFIG_SANDBOX
877 sandbox_early_getopt_check,
879 #ifdef CONFIG_OF_CONTROL
882 display_options, /* say that we are here */
883 display_text_info, /* show debugging info if required */
884 #if defined(CONFIG_8260)
887 #endif /* CONFIG_8260 */
888 #if defined(CONFIG_MPC83xx)
894 #if defined(CONFIG_DISPLAY_CPUINFO)
895 print_cpuinfo, /* display cpu info (and speed) */
897 #if defined(CONFIG_MPC5xxx)
899 #endif /* CONFIG_MPC5xxx */
900 #if defined(CONFIG_DISPLAY_BOARDINFO)
901 checkboard, /* display board info */
903 INIT_FUNC_WATCHDOG_INIT
904 #if defined(CONFIG_MISC_INIT_F)
907 INIT_FUNC_WATCHDOG_RESET
908 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
911 #if defined(CONFIG_HARD_SPI)
915 dram_init_f, /* configure available RAM banks */
916 calculate_relocation_address,
919 /* TODO: unify all these dram functions? */
921 dram_init, /* configure available RAM banks */
929 INIT_FUNC_WATCHDOG_RESET
930 #if defined(CONFIG_SYS_DRAM_TEST)
932 #endif /* CONFIG_SYS_DRAM_TEST */
933 INIT_FUNC_WATCHDOG_RESET
938 INIT_FUNC_WATCHDOG_RESET
940 * Now that we have DRAM mapped and working, we can
941 * relocate the code and continue running from DRAM.
943 * Reserve memory at end of RAM for (top down in that order):
944 * - area that won't get touched by U-Boot and Linux (optional)
945 * - kernel log buffer
949 * - board info struct
952 #if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR)
959 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF)) && \
966 /* TODO: Why the dependency on CONFIG_8xx? */
967 #if defined(CONFIG_VIDEO) && (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) \
968 && !defined(CONFIG_ARM) && !defined(CONFIG_X86)
972 #ifndef CONFIG_SPL_BUILD
984 INIT_FUNC_WATCHDOG_RESET
989 #ifdef CONFIG_SYS_EXTBDINFO
992 INIT_FUNC_WATCHDOG_RESET
1001 void board_init_f(ulong boot_flags)
1009 gd->flags = boot_flags;
1011 if (initcall_run_list(init_sequence_f))
1015 /* NOTREACHED - jump_to_copy() does not return */
1022 * For now this code is only used on x86.
1024 * init_sequence_f_r is the list of init functions which are run when
1025 * U-Boot is executing from Flash with a semi-limited 'C' environment.
1026 * The following limitations must be considered when implementing an
1028 * - 'static' variables are read-only
1029 * - Global Data (gd->xxx) is read/write
1031 * The '_f_r' sequence must, as a minimum, copy U-Boot to RAM (if
1032 * supported). It _should_, if possible, copy global data to RAM and
1033 * initialise the CPU caches (to speed up the relocation process)
1035 * NOTE: At present only x86 uses this route, but it is intended that
1036 * all archs will move to this when generic relocation is implemented.
1038 static init_fnc_t init_sequence_f_r[] = {
1042 do_elf_reloc_fixups,
1047 void board_init_f_r(void)
1049 if (initcall_run_list(init_sequence_f_r))
1053 * U-Boot has been copied into SDRAM, the BSS has been cleared etc.
1054 * Transfer execution from Flash to RAM by calculating the address
1055 * of the in-RAM copy of board_init_r() and calling it
1057 (board_init_r + gd->reloc_off)(gd, gd->relocaddr);
1059 /* NOTREACHED - board_init_r() does not return */
1062 #endif /* CONFIG_X86 */