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>
63 #ifdef CONFIG_ADDR_MAP
66 #include <asm/sections.h>
68 #include <asm/init_helpers.h>
70 #include <linux/compiler.h>
72 DECLARE_GLOBAL_DATA_PTR;
74 ulong monitor_flash_len;
76 int __board_flash_wp_on(void)
79 * Most flashes can't be detected when write protection is enabled,
80 * so provide a way to let U-Boot gracefully ignore write protected
86 int board_flash_wp_on(void)
87 __attribute__ ((weak, alias("__board_flash_wp_on")));
89 void __cpu_secondary_init_r(void)
93 void cpu_secondary_init_r(void)
94 __attribute__ ((weak, alias("__cpu_secondary_init_r")));
96 static int initr_secondary_cpu(void)
99 * after non-volatile devices & environment is setup and cpu code have
100 * another round to deal with any initialization that might require
101 * full access to the environment or loading of some image (firmware)
102 * from a non-volatile device
104 /* TODO: maybe define this for all archs? */
105 cpu_secondary_init_r();
110 static int initr_trace(void)
113 trace_init(gd->trace_buff, CONFIG_TRACE_BUFFER_SIZE);
119 static int initr_reloc(void)
121 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
122 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
129 * Some of these functions are needed purely because the functions they
130 * call return void. If we change them to return 0, these stubs can go away.
132 static int initr_caches(void)
140 __weak int fixup_cpu(void)
145 static int initr_reloc_global_data(void)
147 #ifdef CONFIG_SYS_SYM_OFFSETS
148 monitor_flash_len = _end_ofs;
149 #elif !defined(CONFIG_SANDBOX)
150 monitor_flash_len = (ulong)&__init_end - gd->relocaddr;
152 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
154 * The gd->cpu pointer is set to an address in flash before relocation.
155 * We need to update it to point to the same CPU entry in RAM.
156 * TODO: why not just add gd->reloc_ofs?
158 gd->arch.cpu += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
161 * If we didn't know the cpu mask & # cores, we can save them of
162 * now rather than 'computing' them constantly
166 #ifdef CONFIG_SYS_EXTRA_ENV_RELOC
168 * Some systems need to relocate the env_addr pointer early because the
169 * location it points to will get invalidated before env_relocate is
170 * called. One example is on systems that might use a L2 or L3 cache
171 * in SRAM mode and initialize that cache from SRAM mode back to being
172 * a cache in cpu_init_r.
174 gd->env_addr += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
179 static int initr_serial(void)
186 static int initr_trap(void)
189 * Setup trap handlers
191 trap_init(gd->relocaddr);
197 #ifdef CONFIG_ADDR_MAP
198 static int initr_addr_map(void)
206 #ifdef CONFIG_LOGBUFFER
207 unsigned long logbuffer_base(void)
209 return gd->ram_top - LOGBUFF_LEN;
212 static int initr_logbuffer(void)
220 static int initr_post_backlog(void)
222 post_output_backlog();
227 #ifdef CONFIG_SYS_DELAYED_ICACHE
228 static int initr_icache_enable(void)
234 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
235 static int initr_unlock_ram_in_cache(void)
237 unlock_ram_in_cache(); /* it's time to unlock D-cache in e500 */
243 static int initr_pci(void)
251 #ifdef CONFIG_WINBOND_83C553
252 static int initr_w83c553f(void)
255 * Initialise the ISA bridge
257 initialise_w83c553f();
262 static int initr_barrier(void)
265 /* TODO: Can we not use dmb() macros for this? */
271 static int initr_malloc(void)
275 /* The malloc area is immediately below the monitor copy in DRAM */
276 malloc_start = gd->relocaddr - TOTAL_MALLOC_LEN;
277 mem_malloc_init((ulong)map_sysmem(malloc_start, TOTAL_MALLOC_LEN),
282 __weak int power_init_board(void)
287 static int initr_announce(void)
289 debug("Now running in RAM - U-Boot at: %08lx\n", gd->relocaddr);
293 #if !defined(CONFIG_SYS_NO_FLASH)
294 static int initr_flash(void)
296 ulong flash_size = 0;
302 if (board_flash_wp_on()) {
303 printf("Uninitialized - Write Protect On\n");
304 /* Since WP is on, we can't find real size. Set to 0 */
307 flash_size = flash_init();
311 puts("*** failed ***\n");
313 /* Why does PPC do this? */
318 print_size(flash_size, "");
319 #ifdef CONFIG_SYS_FLASH_CHECKSUM
321 * Compute and print flash CRC if flashchecksum is set to 'y'
323 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
325 if (getenv_yesno("flashchecksum") == 1) {
326 printf(" CRC: %08X", crc32(0,
327 (const unsigned char *) CONFIG_SYS_FLASH_BASE,
330 #endif /* CONFIG_SYS_FLASH_CHECKSUM */
333 /* update start of FLASH memory */
334 #ifdef CONFIG_SYS_FLASH_BASE
335 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
337 /* size of FLASH memory (final value) */
338 bd->bi_flashsize = flash_size;
340 #if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
341 /* Make a update of the Memctrl. */
342 update_flash_size(flash_size);
346 #if defined(CONFIG_OXC) || defined(CONFIG_RMU)
347 /* flash mapped at end of memory map */
348 bd->bi_flashoffset = CONFIG_SYS_TEXT_BASE + flash_size;
349 #elif CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
350 bd->bi_flashoffset = monitor_flash_len; /* reserved area for monitor */
357 static int initr_spi(void)
359 /* PPC does this here */
361 #if !defined(CONFIG_ENV_IS_IN_EEPROM)
370 #ifdef CONFIG_CMD_NAND
371 /* go init the NAND */
380 #if defined(CONFIG_CMD_ONENAND)
381 /* go init the NAND */
382 int initr_onenand(void)
390 #ifdef CONFIG_GENERIC_MMC
394 mmc_initialize(gd->bd);
399 #ifdef CONFIG_HAS_DATAFLASH
400 int initr_dataflash(void)
402 AT91F_DataflashInit();
403 dataflash_print_info();
409 * Tell if it's OK to load the environment early in boot.
411 * If CONFIG_OF_CONFIG is defined, we'll check with the FDT to see
412 * if this is OK (defaulting to saying it's OK).
414 * NOTE: Loading the environment early can be a bad idea if security is
415 * important, since no verification is done on the environment.
417 * @return 0 if environment should not be loaded, !=0 if it is ok to load
419 static int should_load_env(void)
421 #ifdef CONFIG_OF_CONTROL
422 return fdtdec_get_config_int(gd->fdt_blob, "load-environment", 1);
423 #elif defined CONFIG_DELAY_ENVIRONMENT
430 static int initr_env(void)
432 /* initialize environment */
433 if (should_load_env())
436 set_default_env(NULL);
438 /* Initialize from environment */
439 load_addr = getenv_ulong("loadaddr", 16, load_addr);
440 #if defined(CONFIG_SYS_EXTBDINFO)
441 #if defined(CONFIG_405GP) || defined(CONFIG_405EP)
442 #if defined(CONFIG_I2CFAST)
444 * set bi_iic_fast for linux taking environment variable
445 * "i2cfast" into account
448 char *s = getenv("i2cfast");
450 if (s && ((*s == 'y') || (*s == 'Y'))) {
451 gd->bd->bi_iic_fast[0] = 1;
452 gd->bd->bi_iic_fast[1] = 1;
455 #endif /* CONFIG_I2CFAST */
456 #endif /* CONFIG_405GP, CONFIG_405EP */
457 #endif /* CONFIG_SYS_EXTBDINFO */
462 static int initr_hermes(void)
464 if ((gd->board_type >> 16) == 2)
465 gd->bd->bi_ethspeed = gd->board_type & 0xFFFF;
467 gd->bd->bi_ethspeed = 0xFFFF;
471 static int initr_hermes_start(void)
473 if (gd->bd->bi_ethspeed != 0xFFFF)
474 hermes_start_lxt980((int) gd->bd->bi_ethspeed);
480 /* TODO: with new initcalls, move this into the driver */
481 extern void sc3_read_eeprom(void);
483 static int initr_sc3_read_eeprom(void)
490 static int initr_jumptable(void)
496 #if defined(CONFIG_API)
497 static int initr_api(void)
505 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
506 static int show_model_r(void)
508 /* Put this here so it appears on the LCD, now it is ready */
509 # ifdef CONFIG_OF_CONTROL
512 model = (char *)fdt_getprop(gd->fdt_blob, 0, "model", NULL);
513 printf("Model: %s\n", model ? model : "<unknown>");
520 /* enable exceptions */
522 static int initr_enable_interrupts(void)
529 #ifdef CONFIG_CMD_NET
530 static int initr_ethaddr(void)
534 /* kept around for legacy kernels only ... ignore the next section */
535 eth_getenv_enetaddr("ethaddr", bd->bi_enetaddr);
536 #ifdef CONFIG_HAS_ETH1
537 eth_getenv_enetaddr("eth1addr", bd->bi_enet1addr);
539 #ifdef CONFIG_HAS_ETH2
540 eth_getenv_enetaddr("eth2addr", bd->bi_enet2addr);
542 #ifdef CONFIG_HAS_ETH3
543 eth_getenv_enetaddr("eth3addr", bd->bi_enet3addr);
545 #ifdef CONFIG_HAS_ETH4
546 eth_getenv_enetaddr("eth4addr", bd->bi_enet4addr);
548 #ifdef CONFIG_HAS_ETH5
549 eth_getenv_enetaddr("eth5addr", bd->bi_enet5addr);
553 #endif /* CONFIG_CMD_NET */
555 #ifdef CONFIG_CMD_KGDB
556 static int initr_kgdb(void)
564 #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
565 static int initr_status_led(void)
567 status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING);
573 #if defined(CONFIG_CMD_SCSI)
574 static int initr_scsi(void)
576 /* Not supported properly on ARM yet */
584 #endif /* CONFIG_CMD_NET */
586 #if defined(CONFIG_CMD_DOC)
587 static int initr_doc(void)
594 #ifdef CONFIG_BITBANGMII
595 static int initr_bbmii(void)
602 #ifdef CONFIG_CMD_NET
603 static int initr_net(void)
606 eth_initialize(gd->bd);
607 #if defined(CONFIG_RESET_PHY_R)
608 debug("Reset Ethernet PHY\n");
616 static int initr_post(void)
618 post_run(NULL, POST_RAM | post_bootmode_get(0));
623 #if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_CMD_IDE)
624 static int initr_pcmcia(void)
632 #if defined(CONFIG_CMD_IDE)
633 static int initr_ide(void)
635 #ifdef CONFIG_IDE_8xx_PCCARD
640 #if defined(CONFIG_START_IDE)
641 if (board_start_ide())
650 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
652 * Export available size of memory for Linux, taking into account the
653 * protected RAM at top of memory
661 pram = getenv_ulong("pram", 10, CONFIG_PRAM);
663 # if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR)
664 /* Also take the logbuffer into account (pram is in kB) */
665 pram += (LOGBUFF_LEN + LOGBUFF_OVERHEAD) / 1024;
667 sprintf(memsz, "%ldk", (gd->ram_size / 1024) - pram);
668 setenv("mem", memsz);
674 #ifdef CONFIG_CMD_BEDBUG
675 static int initr_bedbug(void)
684 static int initr_kbd(void)
692 #ifdef CONFIG_MODEM_SUPPORT
693 static int initr_modem(void)
695 /* TODO: with new initcalls, move this into the driver */
696 extern int do_mdm_init;
698 do_mdm_init = gd->do_mdm_init;
703 static int run_main_loop(void)
705 #ifdef CONFIG_SANDBOX
706 sandbox_main_loop_init();
708 /* main_loop() can return to retry autoboot, if so just run it again */
715 * Over time we hope to remove these functions with code fragments and
716 * stub funtcions, and instead call the relevant function directly.
718 * We also hope to remove most of the driver-related init and do it if/when
719 * the driver is later used.
721 * TODO: perhaps reset the watchdog in the initcall function after each call?
723 init_fnc_t init_sequence_r[] = {
726 /* TODO: could x86/PPC have this also perhaps? */
729 board_init, /* Setup chipselects */
732 * TODO: printing of the clock inforamtion of the board is now
733 * implemented as part of bdinfo command. Currently only support for
734 * davinci SOC's is added. Remove this check once all the board
738 set_cpu_clk_info, /* Setup clock information */
740 initr_reloc_global_data,
743 INIT_FUNC_WATCHDOG_RESET
747 #ifdef CONFIG_ADDR_MAP
750 #if defined(CONFIG_BOARD_EARLY_INIT_R)
753 INIT_FUNC_WATCHDOG_RESET
754 #ifdef CONFIG_LOGBUFFER
760 INIT_FUNC_WATCHDOG_RESET
761 #ifdef CONFIG_SYS_DELAYED_ICACHE
764 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
765 initr_unlock_ram_in_cache,
767 #if defined(CONFIG_PCI) && defined(CONFIG_SYS_EARLY_PCI_INIT)
769 * Do early PCI configuration _before_ the flash gets initialised,
770 * because PCU ressources are crucial for flash access on some boards.
774 #ifdef CONFIG_WINBOND_83C553
780 #ifdef CONFIG_ARCH_EARLY_INIT_R
784 #ifndef CONFIG_SYS_NO_FLASH
787 INIT_FUNC_WATCHDOG_RESET
788 #if defined(CONFIG_PPC) || defined(CONFIG_X86)
789 /* initialize higher level parts of CPU like time base and timers */
795 #if defined(CONFIG_X86) && defined(CONFIG_SPI)
798 #ifdef CONFIG_CMD_NAND
801 #ifdef CONFIG_CMD_ONENAND
804 #ifdef CONFIG_GENERIC_MMC
807 #ifdef CONFIG_HAS_DATAFLASH
811 INIT_FUNC_WATCHDOG_RESET
814 initr_sc3_read_eeprom,
819 #if defined(CONFIG_ID_EEPROM) || defined(CONFIG_SYS_I2C_MAC_OFFSET)
820 mac_read_from_eeprom,
822 INIT_FUNC_WATCHDOG_RESET
823 #if defined(CONFIG_PCI) && !defined(CONFIG_SYS_EARLY_PCI_INIT)
825 * Do pci configuration
834 console_init_r, /* fully init console as a device */
835 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
838 #ifdef CONFIG_ARCH_MISC_INIT
839 arch_misc_init, /* miscellaneous arch-dependent init */
841 #ifdef CONFIG_MISC_INIT_R
842 misc_init_r, /* miscellaneous platform-dependent init */
847 INIT_FUNC_WATCHDOG_RESET
848 #ifdef CONFIG_CMD_KGDB
855 #if defined(CONFIG_ARM) || defined(CONFIG_x86)
856 initr_enable_interrupts,
859 timer_init, /* initialize timer */
861 #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
864 /* PPC has a udelay(20) here dating from 2002. Why? */
865 #ifdef CONFIG_CMD_NET
868 #ifdef CONFIG_BOARD_LATE_INIT
871 #ifdef CONFIG_CMD_SCSI
872 INIT_FUNC_WATCHDOG_RESET
875 #ifdef CONFIG_CMD_DOC
876 INIT_FUNC_WATCHDOG_RESET
879 #ifdef CONFIG_BITBANGMII
882 #ifdef CONFIG_CMD_NET
883 INIT_FUNC_WATCHDOG_RESET
889 #if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_CMD_IDE)
892 #if defined(CONFIG_CMD_IDE)
895 #ifdef CONFIG_LAST_STAGE_INIT
896 INIT_FUNC_WATCHDOG_RESET
898 * Some parts can be only initialized if all others (like
899 * Interrupts) are up and running (i.e. the PC-style ISA
904 #ifdef CONFIG_CMD_BEDBUG
905 INIT_FUNC_WATCHDOG_RESET
908 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
914 #ifdef CONFIG_MODEM_SUPPORT
920 void board_init_r(gd_t *new_gd, ulong dest_addr)
925 if (initcall_run_list(init_sequence_r))
928 /* NOTREACHED - run_main_loop() does not return */