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>
19 #ifdef CONFIG_HAS_DATAFLASH
20 #include <dataflash.h>
23 #include <environment.h>
25 #if defined(CONFIG_CMD_IDE)
32 #if defined(CONFIG_CMD_KGDB)
38 #ifdef CONFIG_BITBANGMII
43 #include <onenand_uboot.h>
47 #include <stdio_dev.h>
50 #ifdef CONFIG_CMD_AMBAPP
53 #ifdef CONFIG_ADDR_MAP
56 #include <asm/sections.h>
58 #include <asm/init_helpers.h>
61 #include <linux/compiler.h>
62 #include <linux/err.h>
64 #include <asm/arch/mmu.h>
67 DECLARE_GLOBAL_DATA_PTR;
69 #if defined(CONFIG_SPARC)
70 extern int prom_init(void);
73 ulong monitor_flash_len;
75 __weak int board_flash_wp_on(void)
78 * Most flashes can't be detected when write protection is enabled,
79 * so provide a way to let U-Boot gracefully ignore write protected
85 __weak void cpu_secondary_init_r(void)
89 static int initr_secondary_cpu(void)
92 * after non-volatile devices & environment is setup and cpu code have
93 * another round to deal with any initialization that might require
94 * full access to the environment or loading of some image (firmware)
95 * from a non-volatile device
97 /* TODO: maybe define this for all archs? */
98 cpu_secondary_init_r();
103 static int initr_trace(void)
106 trace_init(gd->trace_buff, CONFIG_TRACE_BUFFER_SIZE);
112 static int initr_reloc(void)
114 /* tell others: relocation done */
115 gd->flags |= GD_FLG_RELOC | GD_FLG_FULL_MALLOC_INIT;
122 * Some of these functions are needed purely because the functions they
123 * call return void. If we change them to return 0, these stubs can go away.
125 static int initr_caches(void)
133 __weak int fixup_cpu(void)
138 static int initr_reloc_global_data(void)
141 monitor_flash_len = _end - __image_copy_start;
142 #elif defined(CONFIG_NDS32)
143 monitor_flash_len = (ulong)&_end - (ulong)&_start;
144 #elif !defined(CONFIG_SANDBOX) && !defined(CONFIG_NIOS2)
145 monitor_flash_len = (ulong)&__init_end - gd->relocaddr;
147 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
149 * The gd->cpu pointer is set to an address in flash before relocation.
150 * We need to update it to point to the same CPU entry in RAM.
151 * TODO: why not just add gd->reloc_ofs?
153 gd->arch.cpu += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
156 * If we didn't know the cpu mask & # cores, we can save them of
157 * now rather than 'computing' them constantly
161 #ifdef CONFIG_SYS_EXTRA_ENV_RELOC
163 * Some systems need to relocate the env_addr pointer early because the
164 * location it points to will get invalidated before env_relocate is
165 * called. One example is on systems that might use a L2 or L3 cache
166 * in SRAM mode and initialize that cache from SRAM mode back to being
167 * a cache in cpu_init_r.
169 gd->env_addr += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
174 static int initr_serial(void)
180 #if defined(CONFIG_PPC) || defined(CONFIG_M68K)
181 static int initr_trap(void)
184 * Setup trap handlers
186 #if defined(CONFIG_PPC)
187 trap_init(gd->relocaddr);
189 trap_init(CONFIG_SYS_SDRAM_BASE);
195 #ifdef CONFIG_ADDR_MAP
196 static int initr_addr_map(void)
204 #ifdef CONFIG_LOGBUFFER
205 unsigned long logbuffer_base(void)
207 return gd->ram_top - LOGBUFF_LEN;
210 static int initr_logbuffer(void)
218 static int initr_post_backlog(void)
220 post_output_backlog();
225 #ifdef CONFIG_SYS_DELAYED_ICACHE
226 static int initr_icache_enable(void)
232 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
233 static int initr_unlock_ram_in_cache(void)
235 unlock_ram_in_cache(); /* it's time to unlock D-cache in e500 */
241 static int initr_pci(void)
243 #ifndef CONFIG_DM_PCI
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 #ifdef CONFIG_SYS_MALLOC_F_LEN
276 debug("Pre-reloc malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr,
277 gd->malloc_ptr / 1024);
279 /* The malloc area is immediately below the monitor copy in DRAM */
280 malloc_start = gd->relocaddr - TOTAL_MALLOC_LEN;
281 mem_malloc_init((ulong)map_sysmem(malloc_start, TOTAL_MALLOC_LEN),
286 static int initr_console_record(void)
288 #if defined(CONFIG_CONSOLE_RECORD)
289 return console_record_init();
295 #ifdef CONFIG_SYS_NONCACHED_MEMORY
296 static int initr_noncached(void)
304 static int initr_dm(void)
306 /* Save the pre-reloc driver model and start a new one */
307 gd->dm_root_f = gd->dm_root;
312 return dm_init_and_scan(false);
316 static int initr_bootstage(void)
318 /* We cannot do this before initr_dm() */
319 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
324 __weak int power_init_board(void)
329 static int initr_announce(void)
331 debug("Now running in RAM - U-Boot at: %08lx\n", gd->relocaddr);
335 #ifdef CONFIG_NEEDS_MANUAL_RELOC
336 static int initr_manual_reloc_cmdtable(void)
338 fixup_cmdtable(ll_entry_start(cmd_tbl_t, cmd),
339 ll_entry_count(cmd_tbl_t, cmd));
344 #if !defined(CONFIG_SYS_NO_FLASH)
345 static int initr_flash(void)
347 ulong flash_size = 0;
352 if (board_flash_wp_on())
353 printf("Uninitialized - Write Protect On\n");
355 flash_size = flash_init();
357 print_size(flash_size, "");
358 #ifdef CONFIG_SYS_FLASH_CHECKSUM
360 * Compute and print flash CRC if flashchecksum is set to 'y'
362 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
364 if (getenv_yesno("flashchecksum") == 1) {
365 printf(" CRC: %08X", crc32(0,
366 (const unsigned char *) CONFIG_SYS_FLASH_BASE,
369 #endif /* CONFIG_SYS_FLASH_CHECKSUM */
372 /* update start of FLASH memory */
373 #ifdef CONFIG_SYS_FLASH_BASE
374 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
376 /* size of FLASH memory (final value) */
377 bd->bi_flashsize = flash_size;
379 #if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
380 /* Make a update of the Memctrl. */
381 update_flash_size(flash_size);
385 #if defined(CONFIG_OXC) || defined(CONFIG_RMU)
386 /* flash mapped at end of memory map */
387 bd->bi_flashoffset = CONFIG_SYS_TEXT_BASE + flash_size;
388 #elif CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
389 bd->bi_flashoffset = monitor_flash_len; /* reserved area for monitor */
395 #if defined(CONFIG_PPC) && !defined(CONFIG_DM_SPI)
396 static int initr_spi(void)
398 /* PPC does this here */
400 #if !defined(CONFIG_ENV_IS_IN_EEPROM)
409 #ifdef CONFIG_CMD_NAND
410 /* go init the NAND */
411 static int initr_nand(void)
419 #if defined(CONFIG_CMD_ONENAND)
420 /* go init the NAND */
421 static int initr_onenand(void)
429 #ifdef CONFIG_GENERIC_MMC
430 static int initr_mmc(void)
433 mmc_initialize(gd->bd);
438 #ifdef CONFIG_HAS_DATAFLASH
439 static int initr_dataflash(void)
441 AT91F_DataflashInit();
442 dataflash_print_info();
448 * Tell if it's OK to load the environment early in boot.
450 * If CONFIG_OF_CONFIG is defined, we'll check with the FDT to see
451 * if this is OK (defaulting to saying it's OK).
453 * NOTE: Loading the environment early can be a bad idea if security is
454 * important, since no verification is done on the environment.
456 * @return 0 if environment should not be loaded, !=0 if it is ok to load
458 static int should_load_env(void)
460 #ifdef CONFIG_OF_CONTROL
461 return fdtdec_get_config_int(gd->fdt_blob, "load-environment", 1);
462 #elif defined CONFIG_DELAY_ENVIRONMENT
469 static int initr_env(void)
471 /* initialize environment */
472 if (should_load_env())
475 set_default_env(NULL);
476 #ifdef CONFIG_OF_CONTROL
477 setenv_addr("fdtcontroladdr", gd->fdt_blob);
480 /* Initialize from environment */
481 load_addr = getenv_ulong("loadaddr", 16, load_addr);
482 #if defined(CONFIG_SYS_EXTBDINFO)
483 #if defined(CONFIG_405GP) || defined(CONFIG_405EP)
484 #if defined(CONFIG_I2CFAST)
486 * set bi_iic_fast for linux taking environment variable
487 * "i2cfast" into account
490 char *s = getenv("i2cfast");
492 if (s && ((*s == 'y') || (*s == 'Y'))) {
493 gd->bd->bi_iic_fast[0] = 1;
494 gd->bd->bi_iic_fast[1] = 1;
497 #endif /* CONFIG_I2CFAST */
498 #endif /* CONFIG_405GP, CONFIG_405EP */
499 #endif /* CONFIG_SYS_EXTBDINFO */
503 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
504 static int initr_malloc_bootparams(void)
506 gd->bd->bi_boot_params = (ulong)malloc(CONFIG_SYS_BOOTPARAMS_LEN);
507 if (!gd->bd->bi_boot_params) {
508 puts("WARNING: Cannot allocate space for boot parameters\n");
515 static int initr_jumptable(void)
521 #if defined(CONFIG_API)
522 static int initr_api(void)
530 /* enable exceptions */
531 #if defined(CONFIG_ARM) || defined(CONFIG_AVR32)
532 static int initr_enable_interrupts(void)
539 #ifdef CONFIG_CMD_NET
540 static int initr_ethaddr(void)
544 /* kept around for legacy kernels only ... ignore the next section */
545 eth_getenv_enetaddr("ethaddr", bd->bi_enetaddr);
546 #ifdef CONFIG_HAS_ETH1
547 eth_getenv_enetaddr("eth1addr", bd->bi_enet1addr);
549 #ifdef CONFIG_HAS_ETH2
550 eth_getenv_enetaddr("eth2addr", bd->bi_enet2addr);
552 #ifdef CONFIG_HAS_ETH3
553 eth_getenv_enetaddr("eth3addr", bd->bi_enet3addr);
555 #ifdef CONFIG_HAS_ETH4
556 eth_getenv_enetaddr("eth4addr", bd->bi_enet4addr);
558 #ifdef CONFIG_HAS_ETH5
559 eth_getenv_enetaddr("eth5addr", bd->bi_enet5addr);
563 #endif /* CONFIG_CMD_NET */
565 #ifdef CONFIG_CMD_KGDB
566 static int initr_kgdb(void)
574 #if defined(CONFIG_STATUS_LED)
575 static int initr_status_led(void)
577 #if defined(STATUS_LED_BOOT)
578 status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING);
586 #if defined(CONFIG_CMD_AMBAPP) && defined(CONFIG_SYS_AMBAPP_PRINT_ON_STARTUP)
587 extern int do_ambapp_print(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
589 static int initr_ambapp_print(void)
592 do_ambapp_print(NULL, 0, 0, NULL);
598 #if defined(CONFIG_CMD_SCSI)
599 static int initr_scsi(void)
608 #if defined(CONFIG_CMD_DOC)
609 static int initr_doc(void)
617 #ifdef CONFIG_BITBANGMII
618 static int initr_bbmii(void)
625 #ifdef CONFIG_CMD_NET
626 static int initr_net(void)
630 #if defined(CONFIG_RESET_PHY_R)
631 debug("Reset Ethernet PHY\n");
639 static int initr_post(void)
641 post_run(NULL, POST_RAM | post_bootmode_get(0));
646 #if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_CMD_IDE)
647 static int initr_pcmcia(void)
655 #if defined(CONFIG_CMD_IDE)
656 static int initr_ide(void)
658 #ifdef CONFIG_IDE_8xx_PCCARD
663 #if defined(CONFIG_START_IDE)
664 if (board_start_ide())
673 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
675 * Export available size of memory for Linux, taking into account the
676 * protected RAM at top of memory
684 pram = getenv_ulong("pram", 10, CONFIG_PRAM);
686 # if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR)
687 /* Also take the logbuffer into account (pram is in kB) */
688 pram += (LOGBUFF_LEN + LOGBUFF_OVERHEAD) / 1024;
690 sprintf(memsz, "%ldk", (long int) ((gd->ram_size / 1024) - pram));
691 setenv("mem", memsz);
697 #ifdef CONFIG_CMD_BEDBUG
698 static int initr_bedbug(void)
707 static int initr_kbd(void)
715 static int run_main_loop(void)
717 #ifdef CONFIG_SANDBOX
718 sandbox_main_loop_init();
720 /* main_loop() can return to retry autoboot, if so just run it again */
727 * Over time we hope to remove these functions with code fragments and
728 * stub funtcions, and instead call the relevant function directly.
730 * We also hope to remove most of the driver-related init and do it if/when
731 * the driver is later used.
733 * TODO: perhaps reset the watchdog in the initcall function after each call?
735 init_fnc_t init_sequence_r[] = {
738 /* TODO: could x86/PPC have this also perhaps? */
741 /* Note: For Freescale LS2 SoCs, new MMU table is created in DDR.
742 * A temporary mapping of IFC high region is since removed,
743 * so environmental variables in NOR flash is not availble
744 * until board_init() is called below to remap IFC to high
748 initr_reloc_global_data,
749 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
750 initr_unlock_ram_in_cache,
754 initr_console_record,
755 #ifdef CONFIG_SYS_NONCACHED_MEMORY
763 #if defined(CONFIG_ARM) || defined(CONFIG_NDS32)
764 board_init, /* Setup chipselects */
767 * TODO: printing of the clock inforamtion of the board is now
768 * implemented as part of bdinfo command. Currently only support for
769 * davinci SOC's is added. Remove this check once all the board
773 set_cpu_clk_info, /* Setup clock information */
778 INIT_FUNC_WATCHDOG_RESET
779 #ifdef CONFIG_NEEDS_MANUAL_RELOC
780 initr_manual_reloc_cmdtable,
782 #if defined(CONFIG_PPC) || defined(CONFIG_M68K)
785 #ifdef CONFIG_ADDR_MAP
788 #if defined(CONFIG_BOARD_EARLY_INIT_R)
791 INIT_FUNC_WATCHDOG_RESET
792 #ifdef CONFIG_LOGBUFFER
798 INIT_FUNC_WATCHDOG_RESET
799 #ifdef CONFIG_SYS_DELAYED_ICACHE
802 #if defined(CONFIG_PCI) && defined(CONFIG_SYS_EARLY_PCI_INIT)
804 * Do early PCI configuration _before_ the flash gets initialised,
805 * because PCU ressources are crucial for flash access on some boards.
809 #ifdef CONFIG_WINBOND_83C553
812 #ifdef CONFIG_ARCH_EARLY_INIT_R
816 #ifndef CONFIG_SYS_NO_FLASH
819 INIT_FUNC_WATCHDOG_RESET
820 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_X86) || \
821 defined(CONFIG_SPARC)
822 /* initialize higher level parts of CPU like time base and timers */
828 #ifdef CONFIG_CMD_NAND
831 #ifdef CONFIG_CMD_ONENAND
834 #ifdef CONFIG_GENERIC_MMC
837 #ifdef CONFIG_HAS_DATAFLASH
841 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
842 initr_malloc_bootparams,
844 INIT_FUNC_WATCHDOG_RESET
846 #if defined(CONFIG_ID_EEPROM) || defined(CONFIG_SYS_I2C_MAC_OFFSET)
847 mac_read_from_eeprom,
849 INIT_FUNC_WATCHDOG_RESET
850 #if defined(CONFIG_PCI) && !defined(CONFIG_SYS_EARLY_PCI_INIT)
852 * Do pci configuration
861 console_init_r, /* fully init console as a device */
862 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
865 #ifdef CONFIG_ARCH_MISC_INIT
866 arch_misc_init, /* miscellaneous arch-dependent init */
868 #ifdef CONFIG_MISC_INIT_R
869 misc_init_r, /* miscellaneous platform-dependent init */
871 INIT_FUNC_WATCHDOG_RESET
872 #ifdef CONFIG_CMD_KGDB
876 #if defined(CONFIG_ARM) || defined(CONFIG_AVR32)
877 initr_enable_interrupts,
879 #if defined(CONFIG_MICROBLAZE) || defined(CONFIG_AVR32) || defined(CONFIG_M68K)
880 timer_init, /* initialize timer */
882 #if defined(CONFIG_STATUS_LED)
885 /* PPC has a udelay(20) here dating from 2002. Why? */
886 #ifdef CONFIG_CMD_NET
889 #ifdef CONFIG_BOARD_LATE_INIT
892 #if defined(CONFIG_CMD_AMBAPP)
894 #if defined(CONFIG_SYS_AMBAPP_PRINT_ON_STARTUP)
898 #ifdef CONFIG_CMD_SCSI
899 INIT_FUNC_WATCHDOG_RESET
902 #ifdef CONFIG_CMD_DOC
903 INIT_FUNC_WATCHDOG_RESET
906 #ifdef CONFIG_BITBANGMII
909 #ifdef CONFIG_CMD_NET
910 INIT_FUNC_WATCHDOG_RESET
916 #if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_CMD_IDE)
919 #if defined(CONFIG_CMD_IDE)
922 #ifdef CONFIG_LAST_STAGE_INIT
923 INIT_FUNC_WATCHDOG_RESET
925 * Some parts can be only initialized if all others (like
926 * Interrupts) are up and running (i.e. the PC-style ISA
931 #ifdef CONFIG_CMD_BEDBUG
932 INIT_FUNC_WATCHDOG_RESET
935 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
941 #if defined(CONFIG_SPARC)
947 void board_init_r(gd_t *new_gd, ulong dest_addr)
949 #ifdef CONFIG_NEEDS_MANUAL_RELOC
954 mmu_init_r(dest_addr);
957 #if !defined(CONFIG_X86) && !defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
961 #ifdef CONFIG_NEEDS_MANUAL_RELOC
962 for (i = 0; i < ARRAY_SIZE(init_sequence_r); i++)
963 init_sequence_r[i] += gd->reloc_off;
966 if (initcall_run_list(init_sequence_r))
969 /* NOTREACHED - run_main_loop() does not return */