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 /* TODO: can we just include all these headers whether needed or not? */
31 #if defined(CONFIG_CMD_BEDBUG)
32 #include <bedbug/type.h>
34 #ifdef CONFIG_HAS_DATAFLASH
35 #include <dataflash.h>
37 #include <environment.h>
39 #if defined(CONFIG_CMD_IDE)
46 #if defined(CONFIG_CMD_KGDB)
51 #ifdef CONFIG_BITBANGMII
56 #include <onenand_uboot.h>
60 #include <stdio_dev.h>
62 #ifdef CONFIG_ADDR_MAP
65 #include <asm/sections.h>
66 #include <linux/compiler.h>
68 DECLARE_GLOBAL_DATA_PTR;
70 ulong monitor_flash_len;
72 int __board_flash_wp_on(void)
75 * Most flashes can't be detected when write protection is enabled,
76 * so provide a way to let U-Boot gracefully ignore write protected
82 int board_flash_wp_on(void)
83 __attribute__ ((weak, alias("__board_flash_wp_on")));
85 void __cpu_secondary_init_r(void)
89 void cpu_secondary_init_r(void)
90 __attribute__ ((weak, alias("__cpu_secondary_init_r")));
92 static int initr_secondary_cpu(void)
95 * after non-volatile devices & environment is setup and cpu code have
96 * another round to deal with any initialization that might require
97 * full access to the environment or loading of some image (firmware)
98 * from a non-volatile device
100 /* TODO: maybe define this for all archs? */
101 cpu_secondary_init_r();
106 static int initr_reloc(void)
108 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
109 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
116 * Some of these functions are needed purely because the functions they
117 * call return void. If we change them to return 0, these stubs can go away.
119 static int initr_caches(void)
127 __weak int fixup_cpu(void)
132 static int initr_reloc_global_data(void)
134 #ifdef CONFIG_SYS_SYM_OFFSETS
135 monitor_flash_len = _end_ofs;
137 monitor_flash_len = (ulong)&__init_end - gd->dest_addr;
139 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
141 * The gd->cpu pointer is set to an address in flash before relocation.
142 * We need to update it to point to the same CPU entry in RAM.
143 * TODO: why not just add gd->reloc_ofs?
145 gd->arch.cpu += gd->dest_addr - CONFIG_SYS_MONITOR_BASE;
148 * If we didn't know the cpu mask & # cores, we can save them of
149 * now rather than 'computing' them constantly
153 #ifdef CONFIG_SYS_EXTRA_ENV_RELOC
155 * Some systems need to relocate the env_addr pointer early because the
156 * location it points to will get invalidated before env_relocate is
157 * called. One example is on systems that might use a L2 or L3 cache
158 * in SRAM mode and initialize that cache from SRAM mode back to being
159 * a cache in cpu_init_r.
161 gd->env_addr += gd->dest_addr - CONFIG_SYS_MONITOR_BASE;
166 static int initr_serial(void)
173 static int initr_trap(void)
176 * Setup trap handlers
178 trap_init(gd->dest_addr);
184 #ifdef CONFIG_ADDR_MAP
185 static int initr_addr_map(void)
193 #ifdef CONFIG_LOGBUFFER
194 unsigned long logbuffer_base(void)
196 return gd->ram_top - LOGBUFF_LEN;
199 static int initr_logbuffer(void)
207 static int initr_post_backlog(void)
209 post_output_backlog();
214 #ifdef CONFIG_SYS_DELAYED_ICACHE
215 static int initr_icache_enable(void)
221 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
222 static int initr_unlock_ram_in_cache(void)
224 unlock_ram_in_cache(); /* it's time to unlock D-cache in e500 */
230 static int initr_pci(void)
238 #ifdef CONFIG_WINBOND_83C553
239 static int initr_w83c553f(void)
242 * Initialise the ISA bridge
244 initialise_w83c553f();
249 static int initr_barrier(void)
252 /* TODO: Can we not use dmb() macros for this? */
258 static int initr_malloc(void)
262 /* The malloc area is immediately below the monitor copy in DRAM */
263 malloc_start = gd->dest_addr - TOTAL_MALLOC_LEN;
264 mem_malloc_init(malloc_start, TOTAL_MALLOC_LEN);
268 __weak int power_init_board(void)
273 static int initr_announce(void)
275 debug("Now running in RAM - U-Boot at: %08lx\n", gd->dest_addr);
279 #if !defined(CONFIG_SYS_NO_FLASH)
280 static int initr_flash(void)
282 ulong flash_size = 0;
288 if (board_flash_wp_on()) {
289 printf("Uninitialized - Write Protect On\n");
290 /* Since WP is on, we can't find real size. Set to 0 */
293 flash_size = flash_init();
297 puts("*** failed ***\n");
299 /* Why does PPC do this? */
304 print_size(flash_size, "");
305 #ifdef CONFIG_SYS_FLASH_CHECKSUM
307 * Compute and print flash CRC if flashchecksum is set to 'y'
309 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
311 if (getenv_yesno("flashchecksum") == 1) {
312 printf(" CRC: %08X", crc32(0,
313 (const unsigned char *) CONFIG_SYS_FLASH_BASE,
316 #endif /* CONFIG_SYS_FLASH_CHECKSUM */
319 /* update start of FLASH memory */
320 #ifdef CONFIG_SYS_FLASH_BASE
321 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
323 /* size of FLASH memory (final value) */
324 bd->bi_flashsize = flash_size;
326 #if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
327 /* Make a update of the Memctrl. */
328 update_flash_size(flash_size);
332 #if defined(CONFIG_OXC) || defined(CONFIG_RMU)
333 /* flash mapped at end of memory map */
334 bd->bi_flashoffset = CONFIG_SYS_TEXT_BASE + flash_size;
335 #elif CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
336 bd->bi_flashoffset = monitor_flash_len; /* reserved area for monitor */
343 static int initr_spi(void)
345 /* PPC does this here */
347 #if !defined(CONFIG_ENV_IS_IN_EEPROM)
356 #ifdef CONFIG_CMD_NAND
357 /* go init the NAND */
366 #if defined(CONFIG_CMD_ONENAND)
367 /* go init the NAND */
368 int initr_onenand(void)
376 #ifdef CONFIG_GENERIC_MMC
380 mmc_initialize(gd->bd);
385 #ifdef CONFIG_HAS_DATAFLASH
386 int initr_dataflash(void)
388 AT91F_DataflashInit();
389 dataflash_print_info();
395 * Tell if it's OK to load the environment early in boot.
397 * If CONFIG_OF_CONFIG is defined, we'll check with the FDT to see
398 * if this is OK (defaulting to saying it's OK).
400 * NOTE: Loading the environment early can be a bad idea if security is
401 * important, since no verification is done on the environment.
403 * @return 0 if environment should not be loaded, !=0 if it is ok to load
405 static int should_load_env(void)
407 #ifdef CONFIG_OF_CONTROL
408 return fdtdec_get_config_int(gd->fdt_blob, "load-environment", 1);
409 #elif defined CONFIG_DELAY_ENVIRONMENT
416 static int initr_env(void)
418 /* initialize environment */
419 if (should_load_env())
422 set_default_env(NULL);
424 /* Initialize from environment */
425 load_addr = getenv_ulong("loadaddr", 16, load_addr);
426 #if defined(CONFIG_SYS_EXTBDINFO)
427 #if defined(CONFIG_405GP) || defined(CONFIG_405EP)
428 #if defined(CONFIG_I2CFAST)
430 * set bi_iic_fast for linux taking environment variable
431 * "i2cfast" into account
434 char *s = getenv("i2cfast");
436 if (s && ((*s == 'y') || (*s == 'Y'))) {
437 gd->bd->bi_iic_fast[0] = 1;
438 gd->bd->bi_iic_fast[1] = 1;
441 #endif /* CONFIG_I2CFAST */
442 #endif /* CONFIG_405GP, CONFIG_405EP */
443 #endif /* CONFIG_SYS_EXTBDINFO */
448 static int initr_hermes(void)
450 if ((gd->board_type >> 16) == 2)
451 gd->bd->bi_ethspeed = gd->board_type & 0xFFFF;
453 gd->bd->bi_ethspeed = 0xFFFF;
457 static int initr_hermes_start(void)
459 if (gd->bd->bi_ethspeed != 0xFFFF)
460 hermes_start_lxt980((int) gd->bd->bi_ethspeed);
466 /* TODO: with new initcalls, move this into the driver */
467 extern void sc3_read_eeprom(void);
469 static int initr_sc3_read_eeprom(void)
476 static int initr_jumptable(void)
482 #if defined(CONFIG_API)
483 static int initr_api(void)
491 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
492 static int show_model_r(void)
494 /* Put this here so it appears on the LCD, now it is ready */
495 # ifdef CONFIG_OF_CONTROL
498 model = (char *)fdt_getprop(gd->fdt_blob, 0, "model", NULL);
499 printf("Model: %s\n", model ? model : "<unknown>");
506 /* enable exceptions */
507 static int initr_enable_interrupts(void)
513 #ifdef CONFIG_CMD_NET
514 static int initr_ethaddr(void)
518 /* kept around for legacy kernels only ... ignore the next section */
519 eth_getenv_enetaddr("ethaddr", bd->bi_enetaddr);
520 #ifdef CONFIG_HAS_ETH1
521 eth_getenv_enetaddr("eth1addr", bd->bi_enet1addr);
523 #ifdef CONFIG_HAS_ETH2
524 eth_getenv_enetaddr("eth2addr", bd->bi_enet2addr);
526 #ifdef CONFIG_HAS_ETH3
527 eth_getenv_enetaddr("eth3addr", bd->bi_enet3addr);
529 #ifdef CONFIG_HAS_ETH4
530 eth_getenv_enetaddr("eth4addr", bd->bi_enet4addr);
532 #ifdef CONFIG_HAS_ETH5
533 eth_getenv_enetaddr("eth5addr", bd->bi_enet5addr);
537 #endif /* CONFIG_CMD_NET */
539 #ifdef CONFIG_CMD_KGDB
540 static int initr_kgdb(void)
548 #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
549 static int initr_status_led(void)
551 status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING);
557 #if defined(CONFIG_CMD_SCSI)
558 static int initr_scsi(void)
560 /* Not supported properly on ARM yet */
568 #endif /* CONFIG_CMD_NET */
570 #if defined(CONFIG_CMD_DOC)
571 static int initr_doc(void)
578 #ifdef CONFIG_BITBANGMII
579 static int initr_bbmii(void)
586 #ifdef CONFIG_CMD_NET
587 static int initr_net(void)
590 eth_initialize(gd->bd);
591 #if defined(CONFIG_RESET_PHY_R)
592 debug("Reset Ethernet PHY\n");
600 static int initr_post(void)
602 post_run(NULL, POST_RAM | post_bootmode_get(0));
607 #if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_CMD_IDE)
608 static int initr_pcmcia(void)
616 #if defined(CONFIG_CMD_IDE)
617 static int initr_ide(void)
619 #ifdef CONFIG_IDE_8xx_PCCARD
624 #if defined(CONFIG_START_IDE)
625 if (board_start_ide())
634 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
636 * Export available size of memory for Linux, taking into account the
637 * protected RAM at top of memory
645 pram = getenv_ulong("pram", 10, CONFIG_PRAM);
647 # if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR)
648 /* Also take the logbuffer into account (pram is in kB) */
649 pram += (LOGBUFF_LEN + LOGBUFF_OVERHEAD) / 1024;
651 sprintf(memsz, "%ldk", (gd->ram_size / 1024) - pram);
652 setenv("mem", memsz);
658 #ifdef CONFIG_CMD_BEDBUG
659 static int initr_bedbug(void)
668 static int initr_kbd(void)
676 #ifdef CONFIG_MODEM_SUPPORT
677 static int initr_modem(void)
679 /* TODO: with new initcalls, move this into the driver */
680 extern int do_mdm_init;
682 do_mdm_init = gd->do_mdm_init;
687 static int run_main_loop(void)
689 /* main_loop() can return to retry autoboot, if so just run it again */
696 * Over time we hope to remove these functions with code fragments and
697 * stub funtcions, and instead call the relevant function directly.
699 * We also hope to remove most of the driver-related init and do it if/when
700 * the driver is later used.
702 * TODO: perhaps reset the watchdog in the initcall function after each call?
704 init_fnc_t init_sequence_r[] = {
706 /* TODO: could x86/PPC have this also perhaps? */
709 board_init, /* Setup chipselects */
712 * TODO: printing of the clock inforamtion of the board is now
713 * implemented as part of bdinfo command. Currently only support for
714 * davinci SOC's is added. Remove this check once all the board
718 set_cpu_clk_info, /* Setup clock information */
720 initr_reloc_global_data,
723 INIT_FUNC_WATCHDOG_RESET
727 #ifdef CONFIG_ADDR_MAP
730 #if defined(CONFIG_BOARD_EARLY_INIT_R)
733 INIT_FUNC_WATCHDOG_RESET
734 #ifdef CONFIG_LOGBUFFER
740 INIT_FUNC_WATCHDOG_RESET
741 #ifdef CONFIG_SYS_DELAYED_ICACHE
744 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
745 initr_unlock_ram_in_cache,
747 #if defined(CONFIG_PCI) && defined(CONFIG_SYS_EARLY_PCI_INIT)
749 * Do early PCI configuration _before_ the flash gets initialised,
750 * because PCU ressources are crucial for flash access on some boards.
754 #ifdef CONFIG_WINBOND_83C553
759 #ifdef CONFIG_ARCH_EARLY_INIT_R
763 #ifndef CONFIG_SYS_NO_FLASH
766 INIT_FUNC_WATCHDOG_RESET
768 /* initialize higher level parts of CPU like time base and timers */
772 #ifdef CONFIG_CMD_NAND
775 #ifdef CONFIG_CMD_ONENAND
778 #ifdef CONFIG_GENERIC_MMC
781 #ifdef CONFIG_HAS_DATAFLASH
785 INIT_FUNC_WATCHDOG_RESET
788 initr_sc3_read_eeprom,
793 #if defined(CONFIG_ID_EEPROM) || defined(CONFIG_SYS_I2C_MAC_OFFSET)
794 mac_read_from_eeprom,
796 INIT_FUNC_WATCHDOG_RESET
797 #if defined(CONFIG_PCI) && !defined(CONFIG_SYS_EARLY_PCI_INIT)
799 * Do pci configuration
808 console_init_r, /* fully init console as a device */
809 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
812 #ifdef CONFIG_ARCH_MISC_INIT
813 arch_misc_init, /* miscellaneous arch-dependent init */
815 #ifdef CONFIG_MISC_INIT_R
816 misc_init_r, /* miscellaneous platform-dependent init */
821 INIT_FUNC_WATCHDOG_RESET
822 #ifdef CONFIG_CMD_KGDB
827 initr_enable_interrupts,
829 #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
832 /* PPC has a udelay(20) here dating from 2002. Why? */
833 #ifdef CONFIG_CMD_NET
836 #ifdef CONFIG_BOARD_LATE_INIT
839 #ifdef CONFIG_CMD_SCSI
840 INIT_FUNC_WATCHDOG_RESET
843 #ifdef CONFIG_CMD_DOC
844 INIT_FUNC_WATCHDOG_RESET
847 #ifdef CONFIG_BITBANGMII
850 #ifdef CONFIG_CMD_NET
851 INIT_FUNC_WATCHDOG_RESET
857 #if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_CMD_IDE)
860 #if defined(CONFIG_CMD_IDE)
863 #ifdef CONFIG_LAST_STAGE_INIT
864 INIT_FUNC_WATCHDOG_RESET
866 * Some parts can be only initialized if all others (like
867 * Interrupts) are up and running (i.e. the PC-style ISA
872 #ifdef CONFIG_CMD_BEDBUG
873 INIT_FUNC_WATCHDOG_RESET
876 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
882 #ifdef CONFIG_MODEM_SUPPORT
888 void board_init_r(gd_t *new_gd, ulong dest_addr)
891 if (initcall_run_list(init_sequence_r))
894 /* NOTREACHED - run_main_loop() does not return */