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 /* TODO: can we just include all these headers whether needed or not? */
15 #if defined(CONFIG_CMD_BEDBUG)
16 #include <bedbug/type.h>
18 #ifdef CONFIG_HAS_DATAFLASH
19 #include <dataflash.h>
22 #include <environment.h>
24 #if defined(CONFIG_CMD_IDE)
31 #if defined(CONFIG_CMD_KGDB)
36 #ifdef CONFIG_BITBANGMII
41 #include <onenand_uboot.h>
45 #include <stdio_dev.h>
48 #ifdef CONFIG_ADDR_MAP
51 #include <asm/sections.h>
53 #include <asm/init_helpers.h>
56 #include <linux/compiler.h>
57 #include <linux/err.h>
59 DECLARE_GLOBAL_DATA_PTR;
61 ulong monitor_flash_len;
63 int __board_flash_wp_on(void)
66 * Most flashes can't be detected when write protection is enabled,
67 * so provide a way to let U-Boot gracefully ignore write protected
73 int board_flash_wp_on(void)
74 __attribute__ ((weak, alias("__board_flash_wp_on")));
76 void __cpu_secondary_init_r(void)
80 void cpu_secondary_init_r(void)
81 __attribute__ ((weak, alias("__cpu_secondary_init_r")));
83 static int initr_secondary_cpu(void)
86 * after non-volatile devices & environment is setup and cpu code have
87 * another round to deal with any initialization that might require
88 * full access to the environment or loading of some image (firmware)
89 * from a non-volatile device
91 /* TODO: maybe define this for all archs? */
92 cpu_secondary_init_r();
97 static int initr_trace(void)
100 trace_init(gd->trace_buff, CONFIG_TRACE_BUFFER_SIZE);
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)
135 monitor_flash_len = _end - __image_copy_start;
136 #elif !defined(CONFIG_SANDBOX)
137 monitor_flash_len = (ulong)&__init_end - gd->relocaddr;
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->relocaddr - 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->relocaddr - CONFIG_SYS_MONITOR_BASE;
166 static int initr_serial(void)
173 static int initr_trap(void)
176 * Setup trap handlers
178 trap_init(gd->relocaddr);
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 #ifdef CONFIG_SYS_MALLOC_F_LEN
263 debug("Pre-reloc malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr,
264 gd->malloc_ptr / 1024);
266 /* The malloc area is immediately below the monitor copy in DRAM */
267 malloc_start = gd->relocaddr - TOTAL_MALLOC_LEN;
268 mem_malloc_init((ulong)map_sysmem(malloc_start, TOTAL_MALLOC_LEN),
274 static int initr_dm(void)
280 debug("dm_init() failed: %d\n", ret);
283 ret = dm_scan_platdata(false);
285 debug("dm_scan_platdata() failed: %d\n", ret);
288 #ifdef CONFIG_OF_CONTROL
289 ret = dm_scan_fdt(gd->fdt_blob, false);
291 debug("dm_scan_fdt() failed: %d\n", ret);
300 __weak int power_init_board(void)
305 static int initr_announce(void)
307 debug("Now running in RAM - U-Boot at: %08lx\n", gd->relocaddr);
311 #if !defined(CONFIG_SYS_NO_FLASH)
312 static int initr_flash(void)
314 ulong flash_size = 0;
320 if (board_flash_wp_on()) {
321 printf("Uninitialized - Write Protect On\n");
322 /* Since WP is on, we can't find real size. Set to 0 */
325 flash_size = flash_init();
329 puts("*** failed ***\n");
331 /* Why does PPC do this? */
336 print_size(flash_size, "");
337 #ifdef CONFIG_SYS_FLASH_CHECKSUM
339 * Compute and print flash CRC if flashchecksum is set to 'y'
341 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
343 if (getenv_yesno("flashchecksum") == 1) {
344 printf(" CRC: %08X", crc32(0,
345 (const unsigned char *) CONFIG_SYS_FLASH_BASE,
348 #endif /* CONFIG_SYS_FLASH_CHECKSUM */
351 /* update start of FLASH memory */
352 #ifdef CONFIG_SYS_FLASH_BASE
353 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
355 /* size of FLASH memory (final value) */
356 bd->bi_flashsize = flash_size;
358 #if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
359 /* Make a update of the Memctrl. */
360 update_flash_size(flash_size);
364 #if defined(CONFIG_OXC) || defined(CONFIG_RMU)
365 /* flash mapped at end of memory map */
366 bd->bi_flashoffset = CONFIG_SYS_TEXT_BASE + flash_size;
367 #elif CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
368 bd->bi_flashoffset = monitor_flash_len; /* reserved area for monitor */
375 static int initr_spi(void)
377 /* PPC does this here */
379 #if !defined(CONFIG_ENV_IS_IN_EEPROM)
388 #ifdef CONFIG_CMD_NAND
389 /* go init the NAND */
398 #if defined(CONFIG_CMD_ONENAND)
399 /* go init the NAND */
400 int initr_onenand(void)
408 #ifdef CONFIG_GENERIC_MMC
412 mmc_initialize(gd->bd);
417 #ifdef CONFIG_HAS_DATAFLASH
418 int initr_dataflash(void)
420 AT91F_DataflashInit();
421 dataflash_print_info();
427 * Tell if it's OK to load the environment early in boot.
429 * If CONFIG_OF_CONFIG is defined, we'll check with the FDT to see
430 * if this is OK (defaulting to saying it's OK).
432 * NOTE: Loading the environment early can be a bad idea if security is
433 * important, since no verification is done on the environment.
435 * @return 0 if environment should not be loaded, !=0 if it is ok to load
437 static int should_load_env(void)
439 #ifdef CONFIG_OF_CONTROL
440 return fdtdec_get_config_int(gd->fdt_blob, "load-environment", 1);
441 #elif defined CONFIG_DELAY_ENVIRONMENT
448 static int initr_env(void)
450 /* initialize environment */
451 if (should_load_env())
454 set_default_env(NULL);
456 /* Initialize from environment */
457 load_addr = getenv_ulong("loadaddr", 16, load_addr);
458 #if defined(CONFIG_SYS_EXTBDINFO)
459 #if defined(CONFIG_405GP) || defined(CONFIG_405EP)
460 #if defined(CONFIG_I2CFAST)
462 * set bi_iic_fast for linux taking environment variable
463 * "i2cfast" into account
466 char *s = getenv("i2cfast");
468 if (s && ((*s == 'y') || (*s == 'Y'))) {
469 gd->bd->bi_iic_fast[0] = 1;
470 gd->bd->bi_iic_fast[1] = 1;
473 #endif /* CONFIG_I2CFAST */
474 #endif /* CONFIG_405GP, CONFIG_405EP */
475 #endif /* CONFIG_SYS_EXTBDINFO */
480 static int initr_hermes(void)
482 if ((gd->board_type >> 16) == 2)
483 gd->bd->bi_ethspeed = gd->board_type & 0xFFFF;
485 gd->bd->bi_ethspeed = 0xFFFF;
489 static int initr_hermes_start(void)
491 if (gd->bd->bi_ethspeed != 0xFFFF)
492 hermes_start_lxt980((int) gd->bd->bi_ethspeed);
498 /* TODO: with new initcalls, move this into the driver */
499 extern void sc3_read_eeprom(void);
501 static int initr_sc3_read_eeprom(void)
508 static int initr_jumptable(void)
514 #if defined(CONFIG_API)
515 static int initr_api(void)
523 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
524 static int show_model_r(void)
526 /* Put this here so it appears on the LCD, now it is ready */
527 # ifdef CONFIG_OF_CONTROL
530 model = (char *)fdt_getprop(gd->fdt_blob, 0, "model", NULL);
531 printf("Model: %s\n", model ? model : "<unknown>");
539 /* enable exceptions */
541 static int initr_enable_interrupts(void)
548 #ifdef CONFIG_CMD_NET
549 static int initr_ethaddr(void)
553 /* kept around for legacy kernels only ... ignore the next section */
554 eth_getenv_enetaddr("ethaddr", bd->bi_enetaddr);
555 #ifdef CONFIG_HAS_ETH1
556 eth_getenv_enetaddr("eth1addr", bd->bi_enet1addr);
558 #ifdef CONFIG_HAS_ETH2
559 eth_getenv_enetaddr("eth2addr", bd->bi_enet2addr);
561 #ifdef CONFIG_HAS_ETH3
562 eth_getenv_enetaddr("eth3addr", bd->bi_enet3addr);
564 #ifdef CONFIG_HAS_ETH4
565 eth_getenv_enetaddr("eth4addr", bd->bi_enet4addr);
567 #ifdef CONFIG_HAS_ETH5
568 eth_getenv_enetaddr("eth5addr", bd->bi_enet5addr);
572 #endif /* CONFIG_CMD_NET */
574 #ifdef CONFIG_CMD_KGDB
575 static int initr_kgdb(void)
583 #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
584 static int initr_status_led(void)
586 status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING);
592 #if defined(CONFIG_CMD_SCSI)
593 static int initr_scsi(void)
602 #if defined(CONFIG_CMD_DOC)
603 static int initr_doc(void)
610 #ifdef CONFIG_BITBANGMII
611 static int initr_bbmii(void)
618 #ifdef CONFIG_CMD_NET
619 static int initr_net(void)
622 eth_initialize(gd->bd);
623 #if defined(CONFIG_RESET_PHY_R)
624 debug("Reset Ethernet PHY\n");
632 static int initr_post(void)
634 post_run(NULL, POST_RAM | post_bootmode_get(0));
639 #if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_CMD_IDE)
640 static int initr_pcmcia(void)
648 #if defined(CONFIG_CMD_IDE)
649 static int initr_ide(void)
651 #ifdef CONFIG_IDE_8xx_PCCARD
656 #if defined(CONFIG_START_IDE)
657 if (board_start_ide())
666 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
668 * Export available size of memory for Linux, taking into account the
669 * protected RAM at top of memory
677 pram = getenv_ulong("pram", 10, CONFIG_PRAM);
679 # if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR)
680 /* Also take the logbuffer into account (pram is in kB) */
681 pram += (LOGBUFF_LEN + LOGBUFF_OVERHEAD) / 1024;
683 sprintf(memsz, "%ldk", (gd->ram_size / 1024) - pram);
684 setenv("mem", memsz);
690 #ifdef CONFIG_CMD_BEDBUG
691 static int initr_bedbug(void)
700 static int initr_kbd(void)
708 static int run_main_loop(void)
710 #ifdef CONFIG_SANDBOX
711 sandbox_main_loop_init();
713 /* main_loop() can return to retry autoboot, if so just run it again */
720 * Over time we hope to remove these functions with code fragments and
721 * stub funtcions, and instead call the relevant function directly.
723 * We also hope to remove most of the driver-related init and do it if/when
724 * the driver is later used.
726 * TODO: perhaps reset the watchdog in the initcall function after each call?
728 init_fnc_t init_sequence_r[] = {
731 /* TODO: could x86/PPC have this also perhaps? */
734 board_init, /* Setup chipselects */
737 * TODO: printing of the clock inforamtion of the board is now
738 * implemented as part of bdinfo command. Currently only support for
739 * davinci SOC's is added. Remove this check once all the board
743 set_cpu_clk_info, /* Setup clock information */
745 initr_reloc_global_data,
748 INIT_FUNC_WATCHDOG_RESET
752 #ifdef CONFIG_ADDR_MAP
755 #if defined(CONFIG_BOARD_EARLY_INIT_R)
758 INIT_FUNC_WATCHDOG_RESET
759 #ifdef CONFIG_LOGBUFFER
765 INIT_FUNC_WATCHDOG_RESET
766 #ifdef CONFIG_SYS_DELAYED_ICACHE
769 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
770 initr_unlock_ram_in_cache,
772 #if defined(CONFIG_PCI) && defined(CONFIG_SYS_EARLY_PCI_INIT)
774 * Do early PCI configuration _before_ the flash gets initialised,
775 * because PCU ressources are crucial for flash access on some boards.
779 #ifdef CONFIG_WINBOND_83C553
788 #ifdef CONFIG_ARCH_EARLY_INIT_R
792 #ifndef CONFIG_SYS_NO_FLASH
795 INIT_FUNC_WATCHDOG_RESET
796 #if defined(CONFIG_PPC) || defined(CONFIG_X86)
797 /* initialize higher level parts of CPU like time base and timers */
803 #if defined(CONFIG_X86) && defined(CONFIG_SPI)
806 #ifdef CONFIG_CMD_NAND
809 #ifdef CONFIG_CMD_ONENAND
812 #ifdef CONFIG_GENERIC_MMC
815 #ifdef CONFIG_HAS_DATAFLASH
819 INIT_FUNC_WATCHDOG_RESET
822 initr_sc3_read_eeprom,
827 #if defined(CONFIG_ID_EEPROM) || defined(CONFIG_SYS_I2C_MAC_OFFSET)
828 mac_read_from_eeprom,
830 INIT_FUNC_WATCHDOG_RESET
831 #if defined(CONFIG_PCI) && !defined(CONFIG_SYS_EARLY_PCI_INIT)
833 * Do pci configuration
842 console_init_r, /* fully init console as a device */
843 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
846 #ifdef CONFIG_ARCH_MISC_INIT
847 arch_misc_init, /* miscellaneous arch-dependent init */
849 #ifdef CONFIG_MISC_INIT_R
850 misc_init_r, /* miscellaneous platform-dependent init */
855 INIT_FUNC_WATCHDOG_RESET
856 #ifdef CONFIG_CMD_KGDB
863 #if defined(CONFIG_ARM) || defined(CONFIG_x86)
864 initr_enable_interrupts,
867 timer_init, /* initialize timer */
869 #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
872 /* PPC has a udelay(20) here dating from 2002. Why? */
873 #ifdef CONFIG_CMD_NET
876 #ifdef CONFIG_BOARD_LATE_INIT
879 #ifdef CONFIG_CMD_SCSI
880 INIT_FUNC_WATCHDOG_RESET
883 #ifdef CONFIG_CMD_DOC
884 INIT_FUNC_WATCHDOG_RESET
887 #ifdef CONFIG_BITBANGMII
890 #ifdef CONFIG_CMD_NET
891 INIT_FUNC_WATCHDOG_RESET
897 #if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_CMD_IDE)
900 #if defined(CONFIG_CMD_IDE)
903 #ifdef CONFIG_LAST_STAGE_INIT
904 INIT_FUNC_WATCHDOG_RESET
906 * Some parts can be only initialized if all others (like
907 * Interrupts) are up and running (i.e. the PC-style ISA
912 #ifdef CONFIG_CMD_BEDBUG
913 INIT_FUNC_WATCHDOG_RESET
916 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
925 void board_init_r(gd_t *new_gd, ulong dest_addr)
927 #ifdef CONFIG_NEEDS_MANUAL_RELOC
935 #ifdef CONFIG_NEEDS_MANUAL_RELOC
936 for (i = 0; i < ARRAY_SIZE(init_sequence_r); i++)
937 init_sequence_r[i] += gd->reloc_off;
940 if (initcall_run_list(init_sequence_r))
943 /* NOTREACHED - run_main_loop() does not return */