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)
30 #include <init_helpers.h>
34 #if defined(CONFIG_CMD_KGDB)
40 #ifdef CONFIG_BITBANGMII
45 #include <onenand_uboot.h>
49 #include <stdio_dev.h>
53 #ifdef CONFIG_ADDR_MAP
56 #include <asm/sections.h>
58 #include <linux/compiler.h>
59 #include <linux/err.h>
61 #include <asm/arch/mmu.h>
63 #include <efi_loader.h>
65 DECLARE_GLOBAL_DATA_PTR;
67 ulong monitor_flash_len;
69 __weak int board_flash_wp_on(void)
72 * Most flashes can't be detected when write protection is enabled,
73 * so provide a way to let U-Boot gracefully ignore write protected
79 __weak void cpu_secondary_init_r(void)
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 /* tell others: relocation done */
109 gd->flags |= GD_FLG_RELOC | GD_FLG_FULL_MALLOC_INIT;
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_NDS32)
137 monitor_flash_len = (ulong)&_end - (ulong)&_start;
138 #elif !defined(CONFIG_SANDBOX) && !defined(CONFIG_NIOS2)
139 monitor_flash_len = (ulong)&__init_end - gd->relocaddr;
141 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
143 * The gd->cpu pointer is set to an address in flash before relocation.
144 * We need to update it to point to the same CPU entry in RAM.
145 * TODO: why not just add gd->reloc_ofs?
147 gd->arch.cpu += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
150 * If we didn't know the cpu mask & # cores, we can save them of
151 * now rather than 'computing' them constantly
155 #ifdef CONFIG_SYS_EXTRA_ENV_RELOC
157 * Some systems need to relocate the env_addr pointer early because the
158 * location it points to will get invalidated before env_relocate is
159 * called. One example is on systems that might use a L2 or L3 cache
160 * in SRAM mode and initialize that cache from SRAM mode back to being
161 * a cache in cpu_init_r.
163 gd->env_addr += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
165 #ifdef CONFIG_OF_EMBED
167 * The fdt_blob needs to be moved to new relocation address
168 * incase of FDT blob is embedded with in image
170 gd->fdt_blob += gd->reloc_off;
172 #ifdef CONFIG_EFI_LOADER
173 efi_runtime_relocate(gd->relocaddr, NULL);
179 static int initr_serial(void)
185 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_MIPS)
186 static int initr_trap(void)
189 * Setup trap handlers
191 #if defined(CONFIG_PPC)
192 trap_init(gd->relocaddr);
194 trap_init(CONFIG_SYS_SDRAM_BASE);
200 #ifdef CONFIG_ADDR_MAP
201 static int initr_addr_map(void)
209 #ifdef CONFIG_LOGBUFFER
210 unsigned long logbuffer_base(void)
212 return gd->ram_top - LOGBUFF_LEN;
215 static int initr_logbuffer(void)
223 static int initr_post_backlog(void)
225 post_output_backlog();
230 #ifdef CONFIG_SYS_DELAYED_ICACHE
231 static int initr_icache_enable(void)
237 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
238 static int initr_unlock_ram_in_cache(void)
240 unlock_ram_in_cache(); /* it's time to unlock D-cache in e500 */
246 static int initr_pci(void)
248 #ifndef CONFIG_DM_PCI
256 static int initr_barrier(void)
259 /* TODO: Can we not use dmb() macros for this? */
265 static int initr_malloc(void)
269 #ifdef CONFIG_SYS_MALLOC_F_LEN
270 debug("Pre-reloc malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr,
271 gd->malloc_ptr / 1024);
273 /* The malloc area is immediately below the monitor copy in DRAM */
274 malloc_start = gd->relocaddr - TOTAL_MALLOC_LEN;
275 mem_malloc_init((ulong)map_sysmem(malloc_start, TOTAL_MALLOC_LEN),
280 static int initr_console_record(void)
282 #if defined(CONFIG_CONSOLE_RECORD)
283 return console_record_init();
289 #ifdef CONFIG_SYS_NONCACHED_MEMORY
290 static int initr_noncached(void)
298 static int initr_dm(void)
302 /* Save the pre-reloc driver model and start a new one */
303 gd->dm_root_f = gd->dm_root;
308 ret = dm_init_and_scan(false);
311 #ifdef CONFIG_TIMER_EARLY
312 ret = dm_timer_init();
321 static int initr_bootstage(void)
323 /* We cannot do this before initr_dm() */
324 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
329 __weak int power_init_board(void)
334 static int initr_announce(void)
336 debug("Now running in RAM - U-Boot at: %08lx\n", gd->relocaddr);
340 #ifdef CONFIG_NEEDS_MANUAL_RELOC
341 static int initr_manual_reloc_cmdtable(void)
343 fixup_cmdtable(ll_entry_start(cmd_tbl_t, cmd),
344 ll_entry_count(cmd_tbl_t, cmd));
349 #if defined(CONFIG_MTD_NOR_FLASH)
350 static int initr_flash(void)
352 ulong flash_size = 0;
357 if (board_flash_wp_on())
358 printf("Uninitialized - Write Protect On\n");
360 flash_size = flash_init();
362 print_size(flash_size, "");
363 #ifdef CONFIG_SYS_FLASH_CHECKSUM
365 * Compute and print flash CRC if flashchecksum is set to 'y'
367 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
369 if (getenv_yesno("flashchecksum") == 1) {
370 printf(" CRC: %08X", crc32(0,
371 (const unsigned char *) CONFIG_SYS_FLASH_BASE,
374 #endif /* CONFIG_SYS_FLASH_CHECKSUM */
377 /* update start of FLASH memory */
378 #ifdef CONFIG_SYS_FLASH_BASE
379 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
381 /* size of FLASH memory (final value) */
382 bd->bi_flashsize = flash_size;
384 #if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
385 /* Make a update of the Memctrl. */
386 update_flash_size(flash_size);
390 #if defined(CONFIG_OXC) || defined(CONFIG_RMU)
391 /* flash mapped at end of memory map */
392 bd->bi_flashoffset = CONFIG_SYS_TEXT_BASE + flash_size;
393 #elif CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
394 bd->bi_flashoffset = monitor_flash_len; /* reserved area for monitor */
400 #if defined(CONFIG_PPC) && !defined(CONFIG_DM_SPI)
401 static int initr_spi(void)
403 /* PPC does this here */
405 #if !defined(CONFIG_ENV_IS_IN_EEPROM)
414 #ifdef CONFIG_CMD_NAND
415 /* go init the NAND */
416 static int initr_nand(void)
420 printf("%lu MiB\n", nand_size() / 1024);
425 #if defined(CONFIG_CMD_ONENAND)
426 /* go init the NAND */
427 static int initr_onenand(void)
435 #ifdef CONFIG_GENERIC_MMC
436 static int initr_mmc(void)
439 mmc_initialize(gd->bd);
444 #ifdef CONFIG_HAS_DATAFLASH
445 static int initr_dataflash(void)
447 AT91F_DataflashInit();
448 dataflash_print_info();
454 * Tell if it's OK to load the environment early in boot.
456 * If CONFIG_OF_CONTROL is defined, we'll check with the FDT to see
457 * if this is OK (defaulting to saying it's OK).
459 * NOTE: Loading the environment early can be a bad idea if security is
460 * important, since no verification is done on the environment.
462 * @return 0 if environment should not be loaded, !=0 if it is ok to load
464 static int should_load_env(void)
466 #ifdef CONFIG_OF_CONTROL
467 return fdtdec_get_config_int(gd->fdt_blob, "load-environment", 1);
468 #elif defined CONFIG_DELAY_ENVIRONMENT
475 static int initr_env(void)
477 /* initialize environment */
478 if (should_load_env())
481 set_default_env(NULL);
482 #ifdef CONFIG_OF_CONTROL
483 setenv_addr("fdtcontroladdr", gd->fdt_blob);
486 /* Initialize from environment */
487 load_addr = getenv_ulong("loadaddr", 16, load_addr);
488 #if defined(CONFIG_SYS_EXTBDINFO)
489 #if defined(CONFIG_405GP) || defined(CONFIG_405EP)
490 #if defined(CONFIG_I2CFAST)
492 * set bi_iic_fast for linux taking environment variable
493 * "i2cfast" into account
496 char *s = getenv("i2cfast");
498 if (s && ((*s == 'y') || (*s == 'Y'))) {
499 gd->bd->bi_iic_fast[0] = 1;
500 gd->bd->bi_iic_fast[1] = 1;
503 #endif /* CONFIG_I2CFAST */
504 #endif /* CONFIG_405GP, CONFIG_405EP */
505 #endif /* CONFIG_SYS_EXTBDINFO */
509 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
510 static int initr_malloc_bootparams(void)
512 gd->bd->bi_boot_params = (ulong)malloc(CONFIG_SYS_BOOTPARAMS_LEN);
513 if (!gd->bd->bi_boot_params) {
514 puts("WARNING: Cannot allocate space for boot parameters\n");
521 static int initr_jumptable(void)
527 #if defined(CONFIG_API)
528 static int initr_api(void)
536 /* enable exceptions */
537 #if defined(CONFIG_ARM) || defined(CONFIG_AVR32)
538 static int initr_enable_interrupts(void)
545 #ifdef CONFIG_CMD_NET
546 static int initr_ethaddr(void)
550 /* kept around for legacy kernels only ... ignore the next section */
551 eth_getenv_enetaddr("ethaddr", bd->bi_enetaddr);
552 #ifdef CONFIG_HAS_ETH1
553 eth_getenv_enetaddr("eth1addr", bd->bi_enet1addr);
555 #ifdef CONFIG_HAS_ETH2
556 eth_getenv_enetaddr("eth2addr", bd->bi_enet2addr);
558 #ifdef CONFIG_HAS_ETH3
559 eth_getenv_enetaddr("eth3addr", bd->bi_enet3addr);
561 #ifdef CONFIG_HAS_ETH4
562 eth_getenv_enetaddr("eth4addr", bd->bi_enet4addr);
564 #ifdef CONFIG_HAS_ETH5
565 eth_getenv_enetaddr("eth5addr", bd->bi_enet5addr);
569 #endif /* CONFIG_CMD_NET */
571 #ifdef CONFIG_CMD_KGDB
572 static int initr_kgdb(void)
580 #if defined(CONFIG_LED_STATUS)
581 static int initr_status_led(void)
583 #if defined(CONFIG_LED_STATUS_BOOT)
584 status_led_set(CONFIG_LED_STATUS_BOOT, CONFIG_LED_STATUS_BLINKING);
592 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
593 static int initr_scsi(void)
602 #ifdef CONFIG_BITBANGMII
603 static int initr_bbmii(void)
610 #ifdef CONFIG_CMD_NET
611 static int initr_net(void)
615 #if defined(CONFIG_RESET_PHY_R)
616 debug("Reset Ethernet PHY\n");
624 static int initr_post(void)
626 post_run(NULL, POST_RAM | post_bootmode_get(0));
631 #if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_CMD_IDE)
632 static int initr_pcmcia(void)
640 #if defined(CONFIG_CMD_IDE)
641 static int initr_ide(void)
643 #ifdef CONFIG_IDE_8xx_PCCARD
648 #if defined(CONFIG_START_IDE)
649 if (board_start_ide())
658 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
660 * Export available size of memory for Linux, taking into account the
661 * protected RAM at top of memory
669 pram = getenv_ulong("pram", 10, CONFIG_PRAM);
671 # if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR)
672 /* Also take the logbuffer into account (pram is in kB) */
673 pram += (LOGBUFF_LEN + LOGBUFF_OVERHEAD) / 1024;
675 sprintf(memsz, "%ldk", (long int) ((gd->ram_size / 1024) - pram));
676 setenv("mem", memsz);
682 #ifdef CONFIG_CMD_BEDBUG
683 static int initr_bedbug(void)
692 static int initr_kbd(void)
700 static int run_main_loop(void)
702 #ifdef CONFIG_SANDBOX
703 sandbox_main_loop_init();
705 /* main_loop() can return to retry autoboot, if so just run it again */
712 * Over time we hope to remove these functions with code fragments and
713 * stub funtcions, and instead call the relevant function directly.
715 * We also hope to remove most of the driver-related init and do it if/when
716 * the driver is later used.
718 * TODO: perhaps reset the watchdog in the initcall function after each call?
720 static init_fnc_t init_sequence_r[] = {
723 /* TODO: could x86/PPC have this also perhaps? */
726 /* Note: For Freescale LS2 SoCs, new MMU table is created in DDR.
727 * A temporary mapping of IFC high region is since removed,
728 * so environmental variables in NOR flash is not availble
729 * until board_init() is called below to remap IFC to high
733 initr_reloc_global_data,
734 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
735 initr_unlock_ram_in_cache,
739 initr_console_record,
740 #ifdef CONFIG_SYS_NONCACHED_MEMORY
748 #if defined(CONFIG_ARM) || defined(CONFIG_NDS32)
749 board_init, /* Setup chipselects */
752 * TODO: printing of the clock inforamtion of the board is now
753 * implemented as part of bdinfo command. Currently only support for
754 * davinci SOC's is added. Remove this check once all the board
758 set_cpu_clk_info, /* Setup clock information */
760 #ifdef CONFIG_EFI_LOADER
766 INIT_FUNC_WATCHDOG_RESET
767 #ifdef CONFIG_NEEDS_MANUAL_RELOC
768 initr_manual_reloc_cmdtable,
770 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_MIPS)
773 #ifdef CONFIG_ADDR_MAP
776 #if defined(CONFIG_BOARD_EARLY_INIT_R)
779 INIT_FUNC_WATCHDOG_RESET
780 #ifdef CONFIG_LOGBUFFER
786 INIT_FUNC_WATCHDOG_RESET
787 #ifdef CONFIG_SYS_DELAYED_ICACHE
790 #if defined(CONFIG_PCI) && defined(CONFIG_SYS_EARLY_PCI_INIT)
792 * Do early PCI configuration _before_ the flash gets initialised,
793 * because PCU ressources are crucial for flash access on some boards.
797 #ifdef CONFIG_ARCH_EARLY_INIT_R
801 #ifdef CONFIG_MTD_NOR_FLASH
804 INIT_FUNC_WATCHDOG_RESET
805 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_X86)
806 /* initialize higher level parts of CPU like time base and timers */
812 #ifdef CONFIG_CMD_NAND
815 #ifdef CONFIG_CMD_ONENAND
818 #ifdef CONFIG_GENERIC_MMC
821 #ifdef CONFIG_HAS_DATAFLASH
825 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
826 initr_malloc_bootparams,
828 INIT_FUNC_WATCHDOG_RESET
830 #if defined(CONFIG_ID_EEPROM) || defined(CONFIG_SYS_I2C_MAC_OFFSET)
831 mac_read_from_eeprom,
833 INIT_FUNC_WATCHDOG_RESET
834 #if defined(CONFIG_PCI) && !defined(CONFIG_SYS_EARLY_PCI_INIT)
836 * Do pci configuration
845 console_init_r, /* fully init console as a device */
846 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
849 #ifdef CONFIG_ARCH_MISC_INIT
850 arch_misc_init, /* miscellaneous arch-dependent init */
852 #ifdef CONFIG_MISC_INIT_R
853 misc_init_r, /* miscellaneous platform-dependent init */
855 INIT_FUNC_WATCHDOG_RESET
856 #ifdef CONFIG_CMD_KGDB
860 #if defined(CONFIG_ARM) || defined(CONFIG_AVR32)
861 initr_enable_interrupts,
863 #if defined(CONFIG_MICROBLAZE) || defined(CONFIG_AVR32) || defined(CONFIG_M68K)
864 timer_init, /* initialize timer */
866 #if defined(CONFIG_LED_STATUS)
869 /* PPC has a udelay(20) here dating from 2002. Why? */
870 #ifdef CONFIG_CMD_NET
873 #ifdef CONFIG_BOARD_LATE_INIT
876 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
877 INIT_FUNC_WATCHDOG_RESET
880 #ifdef CONFIG_BITBANGMII
883 #ifdef CONFIG_CMD_NET
884 INIT_FUNC_WATCHDOG_RESET
890 #if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_CMD_IDE)
893 #if defined(CONFIG_CMD_IDE)
896 #ifdef CONFIG_LAST_STAGE_INIT
897 INIT_FUNC_WATCHDOG_RESET
899 * Some parts can be only initialized if all others (like
900 * Interrupts) are up and running (i.e. the PC-style ISA
905 #ifdef CONFIG_CMD_BEDBUG
906 INIT_FUNC_WATCHDOG_RESET
909 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
918 void board_init_r(gd_t *new_gd, ulong dest_addr)
921 * Set up the new global data pointer. So far only x86 does this
923 * TODO(sjg@chromium.org): Consider doing this for all archs, or
924 * dropping the new_gd parameter.
926 #if CONFIG_IS_ENABLED(X86_64)
927 arch_setup_gd(new_gd);
930 #ifdef CONFIG_NEEDS_MANUAL_RELOC
935 mmu_init_r(dest_addr);
938 #if !defined(CONFIG_X86) && !defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
942 #ifdef CONFIG_NEEDS_MANUAL_RELOC
943 for (i = 0; i < ARRAY_SIZE(init_sequence_r); i++)
944 init_sequence_r[i] += gd->reloc_off;
947 if (initcall_run_list(init_sequence_r))
950 /* NOTREACHED - run_main_loop() does not return */