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>
20 #ifdef CONFIG_HAS_DATAFLASH
21 #include <dataflash.h>
24 #include <environment.h>
26 #if defined(CONFIG_CMD_IDE)
33 #if defined(CONFIG_CMD_KGDB)
39 #ifdef CONFIG_BITBANGMII
44 #include <onenand_uboot.h>
48 #include <stdio_dev.h>
52 #ifdef CONFIG_CMD_AMBAPP
55 #ifdef CONFIG_ADDR_MAP
58 #include <asm/sections.h>
60 #include <asm/init_helpers.h>
63 #include <linux/compiler.h>
64 #include <linux/err.h>
66 #include <asm/arch/mmu.h>
69 DECLARE_GLOBAL_DATA_PTR;
71 #if defined(CONFIG_SPARC)
72 extern int prom_init(void);
75 ulong monitor_flash_len;
77 __weak int board_flash_wp_on(void)
80 * Most flashes can't be detected when write protection is enabled,
81 * so provide a way to let U-Boot gracefully ignore write protected
87 __weak void cpu_secondary_init_r(void)
91 static int initr_secondary_cpu(void)
94 * after non-volatile devices & environment is setup and cpu code have
95 * another round to deal with any initialization that might require
96 * full access to the environment or loading of some image (firmware)
97 * from a non-volatile device
99 /* TODO: maybe define this for all archs? */
100 cpu_secondary_init_r();
105 static int initr_trace(void)
108 trace_init(gd->trace_buff, CONFIG_TRACE_BUFFER_SIZE);
114 static int initr_reloc(void)
116 /* tell others: relocation done */
117 gd->flags |= GD_FLG_RELOC | GD_FLG_FULL_MALLOC_INIT;
124 * Some of these functions are needed purely because the functions they
125 * call return void. If we change them to return 0, these stubs can go away.
127 static int initr_caches(void)
135 __weak int fixup_cpu(void)
140 static int initr_reloc_global_data(void)
143 monitor_flash_len = _end - __image_copy_start;
144 #elif defined(CONFIG_NDS32)
145 monitor_flash_len = (ulong)&_end - (ulong)&_start;
146 #elif !defined(CONFIG_SANDBOX) && !defined(CONFIG_NIOS2)
147 monitor_flash_len = (ulong)&__init_end - gd->relocaddr;
149 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
151 * The gd->cpu pointer is set to an address in flash before relocation.
152 * We need to update it to point to the same CPU entry in RAM.
153 * TODO: why not just add gd->reloc_ofs?
155 gd->arch.cpu += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
158 * If we didn't know the cpu mask & # cores, we can save them of
159 * now rather than 'computing' them constantly
163 #ifdef CONFIG_SYS_EXTRA_ENV_RELOC
165 * Some systems need to relocate the env_addr pointer early because the
166 * location it points to will get invalidated before env_relocate is
167 * called. One example is on systems that might use a L2 or L3 cache
168 * in SRAM mode and initialize that cache from SRAM mode back to being
169 * a cache in cpu_init_r.
171 gd->env_addr += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
173 #ifdef CONFIG_OF_EMBED
175 * The fdt_blob needs to be moved to new relocation address
176 * incase of FDT blob is embedded with in image
178 gd->fdt_blob += gd->reloc_off;
184 static int initr_serial(void)
190 #if defined(CONFIG_PPC) || defined(CONFIG_M68K)
191 static int initr_trap(void)
194 * Setup trap handlers
196 #if defined(CONFIG_PPC)
197 trap_init(gd->relocaddr);
199 trap_init(CONFIG_SYS_SDRAM_BASE);
205 #ifdef CONFIG_ADDR_MAP
206 static int initr_addr_map(void)
214 #ifdef CONFIG_LOGBUFFER
215 unsigned long logbuffer_base(void)
217 return gd->ram_top - LOGBUFF_LEN;
220 static int initr_logbuffer(void)
228 static int initr_post_backlog(void)
230 post_output_backlog();
235 #ifdef CONFIG_SYS_DELAYED_ICACHE
236 static int initr_icache_enable(void)
242 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
243 static int initr_unlock_ram_in_cache(void)
245 unlock_ram_in_cache(); /* it's time to unlock D-cache in e500 */
251 static int initr_pci(void)
253 #ifndef CONFIG_DM_PCI
261 #ifdef CONFIG_WINBOND_83C553
262 static int initr_w83c553f(void)
265 * Initialise the ISA bridge
267 initialise_w83c553f();
272 static int initr_barrier(void)
275 /* TODO: Can we not use dmb() macros for this? */
281 static int initr_malloc(void)
285 #ifdef CONFIG_SYS_MALLOC_F_LEN
286 debug("Pre-reloc malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr,
287 gd->malloc_ptr / 1024);
289 /* The malloc area is immediately below the monitor copy in DRAM */
290 malloc_start = gd->relocaddr - TOTAL_MALLOC_LEN;
291 mem_malloc_init((ulong)map_sysmem(malloc_start, TOTAL_MALLOC_LEN),
296 static int initr_console_record(void)
298 #if defined(CONFIG_CONSOLE_RECORD)
299 return console_record_init();
305 #ifdef CONFIG_SYS_NONCACHED_MEMORY
306 static int initr_noncached(void)
314 static int initr_dm(void)
318 /* Save the pre-reloc driver model and start a new one */
319 gd->dm_root_f = gd->dm_root;
321 ret = dm_init_and_scan(false);
324 #ifdef CONFIG_TIMER_EARLY
326 ret = dm_timer_init();
335 static int initr_bootstage(void)
337 /* We cannot do this before initr_dm() */
338 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
343 __weak int power_init_board(void)
348 static int initr_announce(void)
350 debug("Now running in RAM - U-Boot at: %08lx\n", gd->relocaddr);
354 #ifdef CONFIG_NEEDS_MANUAL_RELOC
355 static int initr_manual_reloc_cmdtable(void)
357 fixup_cmdtable(ll_entry_start(cmd_tbl_t, cmd),
358 ll_entry_count(cmd_tbl_t, cmd));
363 #if !defined(CONFIG_SYS_NO_FLASH)
364 static int initr_flash(void)
366 ulong flash_size = 0;
371 if (board_flash_wp_on())
372 printf("Uninitialized - Write Protect On\n");
374 flash_size = flash_init();
376 print_size(flash_size, "");
377 #ifdef CONFIG_SYS_FLASH_CHECKSUM
379 * Compute and print flash CRC if flashchecksum is set to 'y'
381 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
383 if (getenv_yesno("flashchecksum") == 1) {
384 printf(" CRC: %08X", crc32(0,
385 (const unsigned char *) CONFIG_SYS_FLASH_BASE,
388 #endif /* CONFIG_SYS_FLASH_CHECKSUM */
391 /* update start of FLASH memory */
392 #ifdef CONFIG_SYS_FLASH_BASE
393 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
395 /* size of FLASH memory (final value) */
396 bd->bi_flashsize = flash_size;
398 #if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
399 /* Make a update of the Memctrl. */
400 update_flash_size(flash_size);
404 #if defined(CONFIG_OXC) || defined(CONFIG_RMU)
405 /* flash mapped at end of memory map */
406 bd->bi_flashoffset = CONFIG_SYS_TEXT_BASE + flash_size;
407 #elif CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
408 bd->bi_flashoffset = monitor_flash_len; /* reserved area for monitor */
414 #if defined(CONFIG_PPC) && !defined(CONFIG_DM_SPI)
415 static int initr_spi(void)
417 /* PPC does this here */
419 #if !defined(CONFIG_ENV_IS_IN_EEPROM)
428 #ifdef CONFIG_CMD_NAND
429 /* go init the NAND */
430 static int initr_nand(void)
438 #if defined(CONFIG_CMD_ONENAND)
439 /* go init the NAND */
440 static int initr_onenand(void)
448 #ifdef CONFIG_GENERIC_MMC
449 static int initr_mmc(void)
452 mmc_initialize(gd->bd);
457 #ifdef CONFIG_HAS_DATAFLASH
458 static int initr_dataflash(void)
460 AT91F_DataflashInit();
461 dataflash_print_info();
467 * Tell if it's OK to load the environment early in boot.
469 * If CONFIG_OF_CONTROL is defined, we'll check with the FDT to see
470 * if this is OK (defaulting to saying it's OK).
472 * NOTE: Loading the environment early can be a bad idea if security is
473 * important, since no verification is done on the environment.
475 * @return 0 if environment should not be loaded, !=0 if it is ok to load
477 static int should_load_env(void)
479 #ifdef CONFIG_OF_CONTROL
480 return fdtdec_get_config_int(gd->fdt_blob, "load-environment", 1);
481 #elif defined CONFIG_DELAY_ENVIRONMENT
488 static int initr_env(void)
490 /* initialize environment */
491 if (should_load_env())
494 set_default_env(NULL);
495 #ifdef CONFIG_OF_CONTROL
496 setenv_addr("fdtcontroladdr", gd->fdt_blob);
499 /* Initialize from environment */
500 load_addr = getenv_ulong("loadaddr", 16, load_addr);
501 #if defined(CONFIG_SYS_EXTBDINFO)
502 #if defined(CONFIG_405GP) || defined(CONFIG_405EP)
503 #if defined(CONFIG_I2CFAST)
505 * set bi_iic_fast for linux taking environment variable
506 * "i2cfast" into account
509 char *s = getenv("i2cfast");
511 if (s && ((*s == 'y') || (*s == 'Y'))) {
512 gd->bd->bi_iic_fast[0] = 1;
513 gd->bd->bi_iic_fast[1] = 1;
516 #endif /* CONFIG_I2CFAST */
517 #endif /* CONFIG_405GP, CONFIG_405EP */
518 #endif /* CONFIG_SYS_EXTBDINFO */
522 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
523 static int initr_malloc_bootparams(void)
525 gd->bd->bi_boot_params = (ulong)malloc(CONFIG_SYS_BOOTPARAMS_LEN);
526 if (!gd->bd->bi_boot_params) {
527 puts("WARNING: Cannot allocate space for boot parameters\n");
534 static int initr_jumptable(void)
540 #if defined(CONFIG_API)
541 static int initr_api(void)
549 /* enable exceptions */
550 #if defined(CONFIG_ARM) || defined(CONFIG_AVR32)
551 static int initr_enable_interrupts(void)
558 #ifdef CONFIG_CMD_NET
559 static int initr_ethaddr(void)
563 /* kept around for legacy kernels only ... ignore the next section */
564 eth_getenv_enetaddr("ethaddr", bd->bi_enetaddr);
565 #ifdef CONFIG_HAS_ETH1
566 eth_getenv_enetaddr("eth1addr", bd->bi_enet1addr);
568 #ifdef CONFIG_HAS_ETH2
569 eth_getenv_enetaddr("eth2addr", bd->bi_enet2addr);
571 #ifdef CONFIG_HAS_ETH3
572 eth_getenv_enetaddr("eth3addr", bd->bi_enet3addr);
574 #ifdef CONFIG_HAS_ETH4
575 eth_getenv_enetaddr("eth4addr", bd->bi_enet4addr);
577 #ifdef CONFIG_HAS_ETH5
578 eth_getenv_enetaddr("eth5addr", bd->bi_enet5addr);
582 #endif /* CONFIG_CMD_NET */
584 #ifdef CONFIG_CMD_KGDB
585 static int initr_kgdb(void)
593 #if defined(CONFIG_STATUS_LED)
594 static int initr_status_led(void)
596 #if defined(STATUS_LED_BOOT)
597 status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING);
605 #if defined(CONFIG_CMD_AMBAPP) && defined(CONFIG_SYS_AMBAPP_PRINT_ON_STARTUP)
606 extern int do_ambapp_print(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
608 static int initr_ambapp_print(void)
611 do_ambapp_print(NULL, 0, 0, NULL);
617 #if defined(CONFIG_CMD_SCSI)
618 static int initr_scsi(void)
627 #if defined(CONFIG_CMD_DOC)
628 static int initr_doc(void)
636 #ifdef CONFIG_BITBANGMII
637 static int initr_bbmii(void)
644 #ifdef CONFIG_CMD_NET
645 static int initr_net(void)
649 #if defined(CONFIG_RESET_PHY_R)
650 debug("Reset Ethernet PHY\n");
658 static int initr_post(void)
660 post_run(NULL, POST_RAM | post_bootmode_get(0));
665 #if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_CMD_IDE)
666 static int initr_pcmcia(void)
674 #if defined(CONFIG_CMD_IDE)
675 static int initr_ide(void)
677 #ifdef CONFIG_IDE_8xx_PCCARD
682 #if defined(CONFIG_START_IDE)
683 if (board_start_ide())
692 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
694 * Export available size of memory for Linux, taking into account the
695 * protected RAM at top of memory
703 pram = getenv_ulong("pram", 10, CONFIG_PRAM);
705 # if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR)
706 /* Also take the logbuffer into account (pram is in kB) */
707 pram += (LOGBUFF_LEN + LOGBUFF_OVERHEAD) / 1024;
709 sprintf(memsz, "%ldk", (long int) ((gd->ram_size / 1024) - pram));
710 setenv("mem", memsz);
716 #ifdef CONFIG_CMD_BEDBUG
717 static int initr_bedbug(void)
726 static int initr_kbd(void)
734 static int run_main_loop(void)
736 #ifdef CONFIG_SANDBOX
737 sandbox_main_loop_init();
739 /* main_loop() can return to retry autoboot, if so just run it again */
746 * Over time we hope to remove these functions with code fragments and
747 * stub funtcions, and instead call the relevant function directly.
749 * We also hope to remove most of the driver-related init and do it if/when
750 * the driver is later used.
752 * TODO: perhaps reset the watchdog in the initcall function after each call?
754 init_fnc_t init_sequence_r[] = {
757 /* TODO: could x86/PPC have this also perhaps? */
760 /* Note: For Freescale LS2 SoCs, new MMU table is created in DDR.
761 * A temporary mapping of IFC high region is since removed,
762 * so environmental variables in NOR flash is not availble
763 * until board_init() is called below to remap IFC to high
767 initr_reloc_global_data,
768 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
769 initr_unlock_ram_in_cache,
773 initr_console_record,
774 #ifdef CONFIG_SYS_NONCACHED_MEMORY
782 #if defined(CONFIG_ARM) || defined(CONFIG_NDS32)
783 board_init, /* Setup chipselects */
786 * TODO: printing of the clock inforamtion of the board is now
787 * implemented as part of bdinfo command. Currently only support for
788 * davinci SOC's is added. Remove this check once all the board
792 set_cpu_clk_info, /* Setup clock information */
797 INIT_FUNC_WATCHDOG_RESET
798 #ifdef CONFIG_NEEDS_MANUAL_RELOC
799 initr_manual_reloc_cmdtable,
801 #if defined(CONFIG_PPC) || defined(CONFIG_M68K)
804 #ifdef CONFIG_ADDR_MAP
807 #if defined(CONFIG_BOARD_EARLY_INIT_R)
810 INIT_FUNC_WATCHDOG_RESET
811 #ifdef CONFIG_LOGBUFFER
817 INIT_FUNC_WATCHDOG_RESET
818 #ifdef CONFIG_SYS_DELAYED_ICACHE
821 #if defined(CONFIG_PCI) && defined(CONFIG_SYS_EARLY_PCI_INIT)
823 * Do early PCI configuration _before_ the flash gets initialised,
824 * because PCU ressources are crucial for flash access on some boards.
828 #ifdef CONFIG_WINBOND_83C553
831 #ifdef CONFIG_ARCH_EARLY_INIT_R
835 #ifndef CONFIG_SYS_NO_FLASH
838 INIT_FUNC_WATCHDOG_RESET
839 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_X86) || \
840 defined(CONFIG_SPARC)
841 /* initialize higher level parts of CPU like time base and timers */
847 #ifdef CONFIG_CMD_NAND
850 #ifdef CONFIG_CMD_ONENAND
853 #ifdef CONFIG_GENERIC_MMC
856 #ifdef CONFIG_HAS_DATAFLASH
860 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
861 initr_malloc_bootparams,
863 INIT_FUNC_WATCHDOG_RESET
865 #if defined(CONFIG_ID_EEPROM) || defined(CONFIG_SYS_I2C_MAC_OFFSET)
866 mac_read_from_eeprom,
868 INIT_FUNC_WATCHDOG_RESET
869 #if defined(CONFIG_PCI) && !defined(CONFIG_SYS_EARLY_PCI_INIT)
871 * Do pci configuration
880 console_init_r, /* fully init console as a device */
881 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
884 #ifdef CONFIG_ARCH_MISC_INIT
885 arch_misc_init, /* miscellaneous arch-dependent init */
887 #ifdef CONFIG_MISC_INIT_R
888 misc_init_r, /* miscellaneous platform-dependent init */
890 INIT_FUNC_WATCHDOG_RESET
891 #ifdef CONFIG_CMD_KGDB
895 #if defined(CONFIG_ARM) || defined(CONFIG_AVR32)
896 initr_enable_interrupts,
898 #if defined(CONFIG_MICROBLAZE) || defined(CONFIG_AVR32) || defined(CONFIG_M68K)
899 timer_init, /* initialize timer */
901 #if defined(CONFIG_STATUS_LED)
904 /* PPC has a udelay(20) here dating from 2002. Why? */
905 #ifdef CONFIG_CMD_NET
908 #ifdef CONFIG_BOARD_LATE_INIT
911 #if defined(CONFIG_CMD_AMBAPP)
913 #if defined(CONFIG_SYS_AMBAPP_PRINT_ON_STARTUP)
917 #ifdef CONFIG_CMD_SCSI
918 INIT_FUNC_WATCHDOG_RESET
921 #ifdef CONFIG_CMD_DOC
922 INIT_FUNC_WATCHDOG_RESET
925 #ifdef CONFIG_BITBANGMII
928 #ifdef CONFIG_CMD_NET
929 INIT_FUNC_WATCHDOG_RESET
935 #if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_CMD_IDE)
938 #if defined(CONFIG_CMD_IDE)
941 #ifdef CONFIG_LAST_STAGE_INIT
942 INIT_FUNC_WATCHDOG_RESET
944 * Some parts can be only initialized if all others (like
945 * Interrupts) are up and running (i.e. the PC-style ISA
950 #ifdef CONFIG_CMD_BEDBUG
951 INIT_FUNC_WATCHDOG_RESET
954 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
960 #if defined(CONFIG_SPARC)
966 void board_init_r(gd_t *new_gd, ulong dest_addr)
968 #ifdef CONFIG_NEEDS_MANUAL_RELOC
973 mmu_init_r(dest_addr);
976 #if !defined(CONFIG_X86) && !defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
980 #ifdef CONFIG_NEEDS_MANUAL_RELOC
981 for (i = 0; i < ARRAY_SIZE(init_sequence_r); i++)
982 init_sequence_r[i] += gd->reloc_off;
985 if (initcall_run_list(init_sequence_r))
988 /* NOTREACHED - run_main_loop() does not return */