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 gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
103 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
110 * Some of these functions are needed purely because the functions they
111 * call return void. If we change them to return 0, these stubs can go away.
113 static int initr_caches(void)
121 __weak int fixup_cpu(void)
126 static int initr_reloc_global_data(void)
129 monitor_flash_len = _end - __image_copy_start;
130 #elif !defined(CONFIG_SANDBOX) && !defined(CONFIG_NIOS2)
131 monitor_flash_len = (ulong)&__init_end - gd->relocaddr;
133 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
135 * The gd->cpu pointer is set to an address in flash before relocation.
136 * We need to update it to point to the same CPU entry in RAM.
137 * TODO: why not just add gd->reloc_ofs?
139 gd->arch.cpu += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
142 * If we didn't know the cpu mask & # cores, we can save them of
143 * now rather than 'computing' them constantly
147 #ifdef CONFIG_SYS_EXTRA_ENV_RELOC
149 * Some systems need to relocate the env_addr pointer early because the
150 * location it points to will get invalidated before env_relocate is
151 * called. One example is on systems that might use a L2 or L3 cache
152 * in SRAM mode and initialize that cache from SRAM mode back to being
153 * a cache in cpu_init_r.
155 gd->env_addr += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
160 static int initr_serial(void)
167 static int initr_trap(void)
170 * Setup trap handlers
172 trap_init(gd->relocaddr);
178 #ifdef CONFIG_ADDR_MAP
179 static int initr_addr_map(void)
187 #ifdef CONFIG_LOGBUFFER
188 unsigned long logbuffer_base(void)
190 return gd->ram_top - LOGBUFF_LEN;
193 static int initr_logbuffer(void)
201 static int initr_post_backlog(void)
203 post_output_backlog();
208 #ifdef CONFIG_SYS_DELAYED_ICACHE
209 static int initr_icache_enable(void)
215 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
216 static int initr_unlock_ram_in_cache(void)
218 unlock_ram_in_cache(); /* it's time to unlock D-cache in e500 */
224 static int initr_pci(void)
232 #ifdef CONFIG_WINBOND_83C553
233 static int initr_w83c553f(void)
236 * Initialise the ISA bridge
238 initialise_w83c553f();
243 static int initr_barrier(void)
246 /* TODO: Can we not use dmb() macros for this? */
252 static int initr_malloc(void)
256 #ifdef CONFIG_SYS_MALLOC_F_LEN
257 debug("Pre-reloc malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr,
258 gd->malloc_ptr / 1024);
260 /* The malloc area is immediately below the monitor copy in DRAM */
261 malloc_start = gd->relocaddr - TOTAL_MALLOC_LEN;
262 mem_malloc_init((ulong)map_sysmem(malloc_start, TOTAL_MALLOC_LEN),
268 static int initr_dm(void)
270 /* Save the pre-reloc driver model and start a new one */
271 gd->dm_root_f = gd->dm_root;
273 return dm_init_and_scan(false);
277 __weak int power_init_board(void)
282 static int initr_announce(void)
284 debug("Now running in RAM - U-Boot at: %08lx\n", gd->relocaddr);
288 #if !defined(CONFIG_SYS_NO_FLASH)
289 static int initr_flash(void)
291 ulong flash_size = 0;
297 if (board_flash_wp_on()) {
298 printf("Uninitialized - Write Protect On\n");
299 /* Since WP is on, we can't find real size. Set to 0 */
302 flash_size = flash_init();
306 puts("*** failed ***\n");
308 /* Why does PPC do this? */
313 print_size(flash_size, "");
314 #ifdef CONFIG_SYS_FLASH_CHECKSUM
316 * Compute and print flash CRC if flashchecksum is set to 'y'
318 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
320 if (getenv_yesno("flashchecksum") == 1) {
321 printf(" CRC: %08X", crc32(0,
322 (const unsigned char *) CONFIG_SYS_FLASH_BASE,
325 #endif /* CONFIG_SYS_FLASH_CHECKSUM */
328 /* update start of FLASH memory */
329 #ifdef CONFIG_SYS_FLASH_BASE
330 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
332 /* size of FLASH memory (final value) */
333 bd->bi_flashsize = flash_size;
335 #if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
336 /* Make a update of the Memctrl. */
337 update_flash_size(flash_size);
341 #if defined(CONFIG_OXC) || defined(CONFIG_RMU)
342 /* flash mapped at end of memory map */
343 bd->bi_flashoffset = CONFIG_SYS_TEXT_BASE + flash_size;
344 #elif CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
345 bd->bi_flashoffset = monitor_flash_len; /* reserved area for monitor */
351 #if defined(CONFIG_PPC) && !defined(CONFIG_DM_SPI)
352 static int initr_spi(void)
354 /* PPC does this here */
356 #if !defined(CONFIG_ENV_IS_IN_EEPROM)
365 #ifdef CONFIG_CMD_NAND
366 /* go init the NAND */
367 static int initr_nand(void)
375 #if defined(CONFIG_CMD_ONENAND)
376 /* go init the NAND */
377 static int initr_onenand(void)
385 #ifdef CONFIG_GENERIC_MMC
386 static int initr_mmc(void)
389 mmc_initialize(gd->bd);
394 #ifdef CONFIG_HAS_DATAFLASH
395 static int initr_dataflash(void)
397 AT91F_DataflashInit();
398 dataflash_print_info();
404 * Tell if it's OK to load the environment early in boot.
406 * If CONFIG_OF_CONFIG is defined, we'll check with the FDT to see
407 * if this is OK (defaulting to saying it's OK).
409 * NOTE: Loading the environment early can be a bad idea if security is
410 * important, since no verification is done on the environment.
412 * @return 0 if environment should not be loaded, !=0 if it is ok to load
414 static int should_load_env(void)
416 #ifdef CONFIG_OF_CONTROL
417 return fdtdec_get_config_int(gd->fdt_blob, "load-environment", 1);
418 #elif defined CONFIG_DELAY_ENVIRONMENT
425 static int initr_env(void)
427 /* initialize environment */
428 if (should_load_env())
431 set_default_env(NULL);
433 /* Initialize from environment */
434 load_addr = getenv_ulong("loadaddr", 16, load_addr);
435 #if defined(CONFIG_SYS_EXTBDINFO)
436 #if defined(CONFIG_405GP) || defined(CONFIG_405EP)
437 #if defined(CONFIG_I2CFAST)
439 * set bi_iic_fast for linux taking environment variable
440 * "i2cfast" into account
443 char *s = getenv("i2cfast");
445 if (s && ((*s == 'y') || (*s == 'Y'))) {
446 gd->bd->bi_iic_fast[0] = 1;
447 gd->bd->bi_iic_fast[1] = 1;
450 #endif /* CONFIG_I2CFAST */
451 #endif /* CONFIG_405GP, CONFIG_405EP */
452 #endif /* CONFIG_SYS_EXTBDINFO */
457 static int initr_hermes(void)
459 if ((gd->board_type >> 16) == 2)
460 gd->bd->bi_ethspeed = gd->board_type & 0xFFFF;
462 gd->bd->bi_ethspeed = 0xFFFF;
466 static int initr_hermes_start(void)
468 if (gd->bd->bi_ethspeed != 0xFFFF)
469 hermes_start_lxt980((int) gd->bd->bi_ethspeed);
475 /* TODO: with new initcalls, move this into the driver */
476 extern void sc3_read_eeprom(void);
478 static int initr_sc3_read_eeprom(void)
485 static int initr_jumptable(void)
491 #if defined(CONFIG_API)
492 static int initr_api(void)
500 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
501 static int show_model_r(void)
503 /* Put this here so it appears on the LCD, now it is ready */
504 # ifdef CONFIG_OF_CONTROL
507 model = (char *)fdt_getprop(gd->fdt_blob, 0, "model", NULL);
508 printf("Model: %s\n", model ? model : "<unknown>");
516 /* enable exceptions */
518 static int initr_enable_interrupts(void)
525 #ifdef CONFIG_CMD_NET
526 static int initr_ethaddr(void)
530 /* kept around for legacy kernels only ... ignore the next section */
531 eth_getenv_enetaddr("ethaddr", bd->bi_enetaddr);
532 #ifdef CONFIG_HAS_ETH1
533 eth_getenv_enetaddr("eth1addr", bd->bi_enet1addr);
535 #ifdef CONFIG_HAS_ETH2
536 eth_getenv_enetaddr("eth2addr", bd->bi_enet2addr);
538 #ifdef CONFIG_HAS_ETH3
539 eth_getenv_enetaddr("eth3addr", bd->bi_enet3addr);
541 #ifdef CONFIG_HAS_ETH4
542 eth_getenv_enetaddr("eth4addr", bd->bi_enet4addr);
544 #ifdef CONFIG_HAS_ETH5
545 eth_getenv_enetaddr("eth5addr", bd->bi_enet5addr);
549 #endif /* CONFIG_CMD_NET */
551 #ifdef CONFIG_CMD_KGDB
552 static int initr_kgdb(void)
560 #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
561 static int initr_status_led(void)
563 status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING);
569 #if defined(CONFIG_CMD_SCSI)
570 static int initr_scsi(void)
579 #if defined(CONFIG_CMD_DOC)
580 static int initr_doc(void)
588 #ifdef CONFIG_BITBANGMII
589 static int initr_bbmii(void)
596 #ifdef CONFIG_CMD_NET
597 static int initr_net(void)
600 eth_initialize(gd->bd);
601 #if defined(CONFIG_RESET_PHY_R)
602 debug("Reset Ethernet PHY\n");
610 static int initr_post(void)
612 post_run(NULL, POST_RAM | post_bootmode_get(0));
617 #if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_CMD_IDE)
618 static int initr_pcmcia(void)
626 #if defined(CONFIG_CMD_IDE)
627 static int initr_ide(void)
629 #ifdef CONFIG_IDE_8xx_PCCARD
634 #if defined(CONFIG_START_IDE)
635 if (board_start_ide())
644 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
646 * Export available size of memory for Linux, taking into account the
647 * protected RAM at top of memory
655 pram = getenv_ulong("pram", 10, CONFIG_PRAM);
657 # if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR)
658 /* Also take the logbuffer into account (pram is in kB) */
659 pram += (LOGBUFF_LEN + LOGBUFF_OVERHEAD) / 1024;
661 sprintf(memsz, "%ldk", (long int) ((gd->ram_size / 1024) - pram));
662 setenv("mem", memsz);
668 #ifdef CONFIG_CMD_BEDBUG
669 static int initr_bedbug(void)
678 static int initr_kbd(void)
686 static int run_main_loop(void)
688 #ifdef CONFIG_SANDBOX
689 sandbox_main_loop_init();
691 /* main_loop() can return to retry autoboot, if so just run it again */
698 * Over time we hope to remove these functions with code fragments and
699 * stub funtcions, and instead call the relevant function directly.
701 * We also hope to remove most of the driver-related init and do it if/when
702 * the driver is later used.
704 * TODO: perhaps reset the watchdog in the initcall function after each call?
706 init_fnc_t init_sequence_r[] = {
709 /* TODO: could x86/PPC have this also perhaps? */
713 initr_reloc_global_data,
714 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
715 initr_unlock_ram_in_cache,
724 board_init, /* Setup chipselects */
727 * TODO: printing of the clock inforamtion of the board is now
728 * implemented as part of bdinfo command. Currently only support for
729 * davinci SOC's is added. Remove this check once all the board
733 set_cpu_clk_info, /* Setup clock information */
738 INIT_FUNC_WATCHDOG_RESET
742 #ifdef CONFIG_ADDR_MAP
745 #if defined(CONFIG_BOARD_EARLY_INIT_R)
748 INIT_FUNC_WATCHDOG_RESET
749 #ifdef CONFIG_LOGBUFFER
755 INIT_FUNC_WATCHDOG_RESET
756 #ifdef CONFIG_SYS_DELAYED_ICACHE
759 #if defined(CONFIG_PCI) && defined(CONFIG_SYS_EARLY_PCI_INIT)
761 * Do early PCI configuration _before_ the flash gets initialised,
762 * because PCU ressources are crucial for flash access on some boards.
766 #ifdef CONFIG_WINBOND_83C553
769 #ifdef CONFIG_ARCH_EARLY_INIT_R
773 #ifndef CONFIG_SYS_NO_FLASH
776 INIT_FUNC_WATCHDOG_RESET
777 #if defined(CONFIG_PPC) || defined(CONFIG_X86)
778 /* initialize higher level parts of CPU like time base and timers */
784 #if defined(CONFIG_X86) && defined(CONFIG_SPI)
787 #ifdef CONFIG_CMD_NAND
790 #ifdef CONFIG_CMD_ONENAND
793 #ifdef CONFIG_GENERIC_MMC
796 #ifdef CONFIG_HAS_DATAFLASH
800 INIT_FUNC_WATCHDOG_RESET
803 initr_sc3_read_eeprom,
808 #if defined(CONFIG_ID_EEPROM) || defined(CONFIG_SYS_I2C_MAC_OFFSET)
809 mac_read_from_eeprom,
811 INIT_FUNC_WATCHDOG_RESET
812 #if defined(CONFIG_PCI) && !defined(CONFIG_SYS_EARLY_PCI_INIT)
814 * Do pci configuration
823 console_init_r, /* fully init console as a device */
824 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
827 #ifdef CONFIG_ARCH_MISC_INIT
828 arch_misc_init, /* miscellaneous arch-dependent init */
830 #ifdef CONFIG_MISC_INIT_R
831 misc_init_r, /* miscellaneous platform-dependent init */
836 INIT_FUNC_WATCHDOG_RESET
837 #ifdef CONFIG_CMD_KGDB
844 #if defined(CONFIG_ARM) || defined(CONFIG_x86)
845 initr_enable_interrupts,
848 timer_init, /* initialize timer */
850 #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
853 /* PPC has a udelay(20) here dating from 2002. Why? */
854 #ifdef CONFIG_CMD_NET
857 #ifdef CONFIG_BOARD_LATE_INIT
860 #ifdef CONFIG_CMD_SCSI
861 INIT_FUNC_WATCHDOG_RESET
864 #ifdef CONFIG_CMD_DOC
865 INIT_FUNC_WATCHDOG_RESET
868 #ifdef CONFIG_BITBANGMII
871 #ifdef CONFIG_CMD_NET
872 INIT_FUNC_WATCHDOG_RESET
878 #if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_CMD_IDE)
881 #if defined(CONFIG_CMD_IDE)
884 #ifdef CONFIG_LAST_STAGE_INIT
885 INIT_FUNC_WATCHDOG_RESET
887 * Some parts can be only initialized if all others (like
888 * Interrupts) are up and running (i.e. the PC-style ISA
893 #ifdef CONFIG_CMD_BEDBUG
894 INIT_FUNC_WATCHDOG_RESET
897 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
906 void board_init_r(gd_t *new_gd, ulong dest_addr)
908 #ifdef CONFIG_NEEDS_MANUAL_RELOC
912 #if !defined(CONFIG_X86) && !defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
916 #ifdef CONFIG_NEEDS_MANUAL_RELOC
917 for (i = 0; i < ARRAY_SIZE(init_sequence_r); i++)
918 init_sequence_r[i] += gd->reloc_off;
921 if (initcall_run_list(init_sequence_r))
924 /* NOTREACHED - run_main_loop() does not return */