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 __weak 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 __weak void cpu_secondary_init_r(void)
77 static int initr_secondary_cpu(void)
80 * after non-volatile devices & environment is setup and cpu code have
81 * another round to deal with any initialization that might require
82 * full access to the environment or loading of some image (firmware)
83 * from a non-volatile device
85 /* TODO: maybe define this for all archs? */
86 cpu_secondary_init_r();
91 static int initr_trace(void)
94 trace_init(gd->trace_buff, CONFIG_TRACE_BUFFER_SIZE);
100 static int initr_reloc(void)
102 /* tell others: relocation done */
103 gd->flags |= GD_FLG_RELOC | GD_FLG_FULL_MALLOC_INIT;
104 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
111 * Some of these functions are needed purely because the functions they
112 * call return void. If we change them to return 0, these stubs can go away.
114 static int initr_caches(void)
122 __weak int fixup_cpu(void)
127 static int initr_reloc_global_data(void)
130 monitor_flash_len = _end - __image_copy_start;
131 #elif !defined(CONFIG_SANDBOX) && !defined(CONFIG_NIOS2)
132 monitor_flash_len = (ulong)&__init_end - gd->relocaddr;
134 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
136 * The gd->cpu pointer is set to an address in flash before relocation.
137 * We need to update it to point to the same CPU entry in RAM.
138 * TODO: why not just add gd->reloc_ofs?
140 gd->arch.cpu += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
143 * If we didn't know the cpu mask & # cores, we can save them of
144 * now rather than 'computing' them constantly
148 #ifdef CONFIG_SYS_EXTRA_ENV_RELOC
150 * Some systems need to relocate the env_addr pointer early because the
151 * location it points to will get invalidated before env_relocate is
152 * called. One example is on systems that might use a L2 or L3 cache
153 * in SRAM mode and initialize that cache from SRAM mode back to being
154 * a cache in cpu_init_r.
156 gd->env_addr += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
161 static int initr_serial(void)
168 static int initr_trap(void)
171 * Setup trap handlers
173 trap_init(gd->relocaddr);
179 #ifdef CONFIG_ADDR_MAP
180 static int initr_addr_map(void)
188 #ifdef CONFIG_LOGBUFFER
189 unsigned long logbuffer_base(void)
191 return gd->ram_top - LOGBUFF_LEN;
194 static int initr_logbuffer(void)
202 static int initr_post_backlog(void)
204 post_output_backlog();
209 #ifdef CONFIG_SYS_DELAYED_ICACHE
210 static int initr_icache_enable(void)
216 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
217 static int initr_unlock_ram_in_cache(void)
219 unlock_ram_in_cache(); /* it's time to unlock D-cache in e500 */
225 static int initr_pci(void)
233 #ifdef CONFIG_WINBOND_83C553
234 static int initr_w83c553f(void)
237 * Initialise the ISA bridge
239 initialise_w83c553f();
244 static int initr_barrier(void)
247 /* TODO: Can we not use dmb() macros for this? */
253 static int initr_malloc(void)
257 #ifdef CONFIG_SYS_MALLOC_F_LEN
258 debug("Pre-reloc malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr,
259 gd->malloc_ptr / 1024);
261 /* The malloc area is immediately below the monitor copy in DRAM */
262 malloc_start = gd->relocaddr - TOTAL_MALLOC_LEN;
263 mem_malloc_init((ulong)map_sysmem(malloc_start, TOTAL_MALLOC_LEN),
268 #ifdef CONFIG_SYS_NONCACHED_MEMORY
269 static int initr_noncached(void)
277 static int initr_dm(void)
279 /* Save the pre-reloc driver model and start a new one */
280 gd->dm_root_f = gd->dm_root;
282 return dm_init_and_scan(false);
286 __weak int power_init_board(void)
291 static int initr_announce(void)
293 debug("Now running in RAM - U-Boot at: %08lx\n", gd->relocaddr);
297 #ifdef CONFIG_NEEDS_MANUAL_RELOC
298 static int initr_manual_reloc_cmdtable(void)
300 fixup_cmdtable(ll_entry_start(cmd_tbl_t, cmd),
301 ll_entry_count(cmd_tbl_t, cmd));
306 #if !defined(CONFIG_SYS_NO_FLASH)
307 static int initr_flash(void)
309 ulong flash_size = 0;
314 if (board_flash_wp_on())
315 printf("Uninitialized - Write Protect On\n");
317 flash_size = flash_init();
319 print_size(flash_size, "");
320 #ifdef CONFIG_SYS_FLASH_CHECKSUM
322 * Compute and print flash CRC if flashchecksum is set to 'y'
324 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
326 if (getenv_yesno("flashchecksum") == 1) {
327 printf(" CRC: %08X", crc32(0,
328 (const unsigned char *) CONFIG_SYS_FLASH_BASE,
331 #endif /* CONFIG_SYS_FLASH_CHECKSUM */
334 /* update start of FLASH memory */
335 #ifdef CONFIG_SYS_FLASH_BASE
336 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
338 /* size of FLASH memory (final value) */
339 bd->bi_flashsize = flash_size;
341 #if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
342 /* Make a update of the Memctrl. */
343 update_flash_size(flash_size);
347 #if defined(CONFIG_OXC) || defined(CONFIG_RMU)
348 /* flash mapped at end of memory map */
349 bd->bi_flashoffset = CONFIG_SYS_TEXT_BASE + flash_size;
350 #elif CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
351 bd->bi_flashoffset = monitor_flash_len; /* reserved area for monitor */
357 #if defined(CONFIG_PPC) && !defined(CONFIG_DM_SPI)
358 static int initr_spi(void)
360 /* PPC does this here */
362 #if !defined(CONFIG_ENV_IS_IN_EEPROM)
371 #ifdef CONFIG_CMD_NAND
372 /* go init the NAND */
373 static int initr_nand(void)
381 #if defined(CONFIG_CMD_ONENAND)
382 /* go init the NAND */
383 static int initr_onenand(void)
391 #ifdef CONFIG_GENERIC_MMC
392 static int initr_mmc(void)
395 mmc_initialize(gd->bd);
400 #ifdef CONFIG_HAS_DATAFLASH
401 static int initr_dataflash(void)
403 AT91F_DataflashInit();
404 dataflash_print_info();
410 * Tell if it's OK to load the environment early in boot.
412 * If CONFIG_OF_CONFIG is defined, we'll check with the FDT to see
413 * if this is OK (defaulting to saying it's OK).
415 * NOTE: Loading the environment early can be a bad idea if security is
416 * important, since no verification is done on the environment.
418 * @return 0 if environment should not be loaded, !=0 if it is ok to load
420 static int should_load_env(void)
422 #ifdef CONFIG_OF_CONTROL
423 return fdtdec_get_config_int(gd->fdt_blob, "load-environment", 1);
424 #elif defined CONFIG_DELAY_ENVIRONMENT
431 static int initr_env(void)
433 /* initialize environment */
434 if (should_load_env())
437 set_default_env(NULL);
439 /* Initialize from environment */
440 load_addr = getenv_ulong("loadaddr", 16, load_addr);
441 #if defined(CONFIG_SYS_EXTBDINFO)
442 #if defined(CONFIG_405GP) || defined(CONFIG_405EP)
443 #if defined(CONFIG_I2CFAST)
445 * set bi_iic_fast for linux taking environment variable
446 * "i2cfast" into account
449 char *s = getenv("i2cfast");
451 if (s && ((*s == 'y') || (*s == 'Y'))) {
452 gd->bd->bi_iic_fast[0] = 1;
453 gd->bd->bi_iic_fast[1] = 1;
456 #endif /* CONFIG_I2CFAST */
457 #endif /* CONFIG_405GP, CONFIG_405EP */
458 #endif /* CONFIG_SYS_EXTBDINFO */
463 /* TODO: with new initcalls, move this into the driver */
464 extern void sc3_read_eeprom(void);
466 static int initr_sc3_read_eeprom(void)
473 static int initr_jumptable(void)
479 #if defined(CONFIG_API)
480 static int initr_api(void)
488 /* enable exceptions */
490 static int initr_enable_interrupts(void)
497 #ifdef CONFIG_CMD_NET
498 static int initr_ethaddr(void)
502 /* kept around for legacy kernels only ... ignore the next section */
503 eth_getenv_enetaddr("ethaddr", bd->bi_enetaddr);
504 #ifdef CONFIG_HAS_ETH1
505 eth_getenv_enetaddr("eth1addr", bd->bi_enet1addr);
507 #ifdef CONFIG_HAS_ETH2
508 eth_getenv_enetaddr("eth2addr", bd->bi_enet2addr);
510 #ifdef CONFIG_HAS_ETH3
511 eth_getenv_enetaddr("eth3addr", bd->bi_enet3addr);
513 #ifdef CONFIG_HAS_ETH4
514 eth_getenv_enetaddr("eth4addr", bd->bi_enet4addr);
516 #ifdef CONFIG_HAS_ETH5
517 eth_getenv_enetaddr("eth5addr", bd->bi_enet5addr);
521 #endif /* CONFIG_CMD_NET */
523 #ifdef CONFIG_CMD_KGDB
524 static int initr_kgdb(void)
532 #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
533 static int initr_status_led(void)
535 status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING);
541 #if defined(CONFIG_CMD_SCSI)
542 static int initr_scsi(void)
551 #if defined(CONFIG_CMD_DOC)
552 static int initr_doc(void)
560 #ifdef CONFIG_BITBANGMII
561 static int initr_bbmii(void)
568 #ifdef CONFIG_CMD_NET
569 static int initr_net(void)
572 eth_initialize(gd->bd);
573 #if defined(CONFIG_RESET_PHY_R)
574 debug("Reset Ethernet PHY\n");
582 static int initr_post(void)
584 post_run(NULL, POST_RAM | post_bootmode_get(0));
589 #if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_CMD_IDE)
590 static int initr_pcmcia(void)
598 #if defined(CONFIG_CMD_IDE)
599 static int initr_ide(void)
601 #ifdef CONFIG_IDE_8xx_PCCARD
606 #if defined(CONFIG_START_IDE)
607 if (board_start_ide())
616 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
618 * Export available size of memory for Linux, taking into account the
619 * protected RAM at top of memory
627 pram = getenv_ulong("pram", 10, CONFIG_PRAM);
629 # if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR)
630 /* Also take the logbuffer into account (pram is in kB) */
631 pram += (LOGBUFF_LEN + LOGBUFF_OVERHEAD) / 1024;
633 sprintf(memsz, "%ldk", (long int) ((gd->ram_size / 1024) - pram));
634 setenv("mem", memsz);
640 #ifdef CONFIG_CMD_BEDBUG
641 static int initr_bedbug(void)
650 static int initr_kbd(void)
658 static int run_main_loop(void)
660 #ifdef CONFIG_SANDBOX
661 sandbox_main_loop_init();
663 /* main_loop() can return to retry autoboot, if so just run it again */
670 * Over time we hope to remove these functions with code fragments and
671 * stub funtcions, and instead call the relevant function directly.
673 * We also hope to remove most of the driver-related init and do it if/when
674 * the driver is later used.
676 * TODO: perhaps reset the watchdog in the initcall function after each call?
678 init_fnc_t init_sequence_r[] = {
681 /* TODO: could x86/PPC have this also perhaps? */
685 initr_reloc_global_data,
686 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
687 initr_unlock_ram_in_cache,
691 #ifdef CONFIG_SYS_NONCACHED_MEMORY
699 board_init, /* Setup chipselects */
702 * TODO: printing of the clock inforamtion of the board is now
703 * implemented as part of bdinfo command. Currently only support for
704 * davinci SOC's is added. Remove this check once all the board
708 set_cpu_clk_info, /* Setup clock information */
713 INIT_FUNC_WATCHDOG_RESET
714 #ifdef CONFIG_NEEDS_MANUAL_RELOC
715 initr_manual_reloc_cmdtable,
720 #ifdef CONFIG_ADDR_MAP
723 #if defined(CONFIG_BOARD_EARLY_INIT_R)
726 INIT_FUNC_WATCHDOG_RESET
727 #ifdef CONFIG_LOGBUFFER
733 INIT_FUNC_WATCHDOG_RESET
734 #ifdef CONFIG_SYS_DELAYED_ICACHE
737 #if defined(CONFIG_PCI) && defined(CONFIG_SYS_EARLY_PCI_INIT)
739 * Do early PCI configuration _before_ the flash gets initialised,
740 * because PCU ressources are crucial for flash access on some boards.
744 #ifdef CONFIG_WINBOND_83C553
747 #ifdef CONFIG_ARCH_EARLY_INIT_R
751 #ifndef CONFIG_SYS_NO_FLASH
754 INIT_FUNC_WATCHDOG_RESET
755 #if defined(CONFIG_PPC)
756 /* initialize higher level parts of CPU like time base and timers */
762 #if defined(CONFIG_X86) && defined(CONFIG_SPI)
765 #ifdef CONFIG_CMD_NAND
768 #ifdef CONFIG_CMD_ONENAND
771 #ifdef CONFIG_GENERIC_MMC
774 #ifdef CONFIG_HAS_DATAFLASH
778 INIT_FUNC_WATCHDOG_RESET
781 initr_sc3_read_eeprom,
783 #if defined(CONFIG_ID_EEPROM) || defined(CONFIG_SYS_I2C_MAC_OFFSET)
784 mac_read_from_eeprom,
786 INIT_FUNC_WATCHDOG_RESET
787 #if defined(CONFIG_PCI) && !defined(CONFIG_SYS_EARLY_PCI_INIT)
789 * Do pci configuration
798 console_init_r, /* fully init console as a device */
799 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
802 #ifdef CONFIG_ARCH_MISC_INIT
803 arch_misc_init, /* miscellaneous arch-dependent init */
805 #ifdef CONFIG_MISC_INIT_R
806 misc_init_r, /* miscellaneous platform-dependent init */
808 INIT_FUNC_WATCHDOG_RESET
809 #ifdef CONFIG_CMD_KGDB
813 #if defined(CONFIG_ARM)
814 initr_enable_interrupts,
816 #if defined(CONFIG_X86) || defined(CONFIG_MICROBLAZE)
817 timer_init, /* initialize timer */
819 #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
822 /* PPC has a udelay(20) here dating from 2002. Why? */
823 #ifdef CONFIG_CMD_NET
826 #ifdef CONFIG_BOARD_LATE_INIT
829 #ifdef CONFIG_CMD_SCSI
830 INIT_FUNC_WATCHDOG_RESET
833 #ifdef CONFIG_CMD_DOC
834 INIT_FUNC_WATCHDOG_RESET
837 #ifdef CONFIG_BITBANGMII
840 #ifdef CONFIG_CMD_NET
841 INIT_FUNC_WATCHDOG_RESET
847 #if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_CMD_IDE)
850 #if defined(CONFIG_CMD_IDE)
853 #ifdef CONFIG_LAST_STAGE_INIT
854 INIT_FUNC_WATCHDOG_RESET
856 * Some parts can be only initialized if all others (like
857 * Interrupts) are up and running (i.e. the PC-style ISA
862 #ifdef CONFIG_CMD_BEDBUG
863 INIT_FUNC_WATCHDOG_RESET
866 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
875 void board_init_r(gd_t *new_gd, ulong dest_addr)
877 #ifdef CONFIG_NEEDS_MANUAL_RELOC
881 #if !defined(CONFIG_X86) && !defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
885 #ifdef CONFIG_NEEDS_MANUAL_RELOC
886 for (i = 0; i < ARRAY_SIZE(init_sequence_r); i++)
887 init_sequence_r[i] += gd->reloc_off;
890 if (initcall_run_list(init_sequence_r))
893 /* NOTREACHED - run_main_loop() does not return */