1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (c) 2011 The Chromium OS Authors.
4 * (C) Copyright 2002-2006
8 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
15 #include <u-boot/crc.h>
16 /* TODO: can we just include all these headers whether needed or not? */
17 #if defined(CONFIG_CMD_BEDBUG)
18 #include <bedbug/type.h>
24 #include <env_internal.h>
28 #if defined(CONFIG_CMD_KGDB)
33 #ifdef CONFIG_BITBANGMII
39 #include <onenand_uboot.h>
42 #include <status_led.h>
43 #include <stdio_dev.h>
47 #ifdef CONFIG_ADDR_MAP
50 #include <asm/sections.h>
52 #include <linux/compiler.h>
53 #include <linux/err.h>
54 #include <efi_loader.h>
56 #if defined(CONFIG_GPIO_HOG)
60 DECLARE_GLOBAL_DATA_PTR;
62 ulong monitor_flash_len;
64 __weak int board_flash_wp_on(void)
67 * Most flashes can't be detected when write protection is enabled,
68 * so provide a way to let U-Boot gracefully ignore write protected
74 __weak void cpu_secondary_init_r(void)
78 static int initr_secondary_cpu(void)
81 * after non-volatile devices & environment is setup and cpu code have
82 * another round to deal with any initialization that might require
83 * full access to the environment or loading of some image (firmware)
84 * from a non-volatile device
86 /* TODO: maybe define this for all archs? */
87 cpu_secondary_init_r();
92 static int initr_trace(void)
95 trace_init(gd->trace_buff, CONFIG_TRACE_BUFFER_SIZE);
101 static int initr_reloc(void)
103 /* tell others: relocation done */
104 gd->flags |= GD_FLG_RELOC | GD_FLG_FULL_MALLOC_INIT;
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_NDS32) || defined(CONFIG_RISCV)
132 monitor_flash_len = (ulong)&_end - (ulong)&_start;
133 #elif !defined(CONFIG_SANDBOX) && !defined(CONFIG_NIOS2)
134 monitor_flash_len = (ulong)&__init_end - gd->relocaddr;
136 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
138 * The gd->cpu pointer is set to an address in flash before relocation.
139 * We need to update it to point to the same CPU entry in RAM.
140 * TODO: why not just add gd->reloc_ofs?
142 gd->arch.cpu += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
145 * If we didn't know the cpu mask & # cores, we can save them of
146 * now rather than 'computing' them constantly
150 #ifdef CONFIG_SYS_RELOC_GD_ENV_ADDR
152 * Relocate the early env_addr pointer unless we know it is not inside
153 * the binary. Some systems need this and for the rest, it doesn't hurt.
155 gd->env_addr += gd->reloc_off;
157 #ifdef CONFIG_OF_EMBED
159 * The fdt_blob needs to be moved to new relocation address
160 * incase of FDT blob is embedded with in image
162 gd->fdt_blob += gd->reloc_off;
164 #ifdef CONFIG_EFI_LOADER
166 * On the ARM architecture gd is mapped to a fixed register (r9 or x18).
167 * As this register may be overwritten by an EFI payload we save it here
168 * and restore it on every callback entered.
172 efi_runtime_relocate(gd->relocaddr, NULL);
178 static int initr_serial(void)
184 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_MIPS)
185 static int initr_trap(void)
188 * Setup trap handlers
190 #if defined(CONFIG_PPC)
191 trap_init(gd->relocaddr);
193 trap_init(CONFIG_SYS_SDRAM_BASE);
199 #ifdef CONFIG_ADDR_MAP
200 static int initr_addr_map(void)
209 static int initr_post_backlog(void)
211 post_output_backlog();
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)
227 #ifndef CONFIG_DM_PCI
235 static int initr_barrier(void)
238 /* TODO: Can we not use dmb() macros for this? */
244 static int initr_malloc(void)
248 #if CONFIG_VAL(SYS_MALLOC_F_LEN)
249 debug("Pre-reloc malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr,
250 gd->malloc_ptr / 1024);
252 /* The malloc area is immediately below the monitor copy in DRAM */
254 * This value MUST match the value of gd->start_addr_sp in board_f.c:
255 * reserve_noncached().
257 malloc_start = gd->relocaddr - TOTAL_MALLOC_LEN;
258 mem_malloc_init((ulong)map_sysmem(malloc_start, TOTAL_MALLOC_LEN),
263 static int initr_console_record(void)
265 #if defined(CONFIG_CONSOLE_RECORD)
266 return console_record_init();
272 #ifdef CONFIG_SYS_NONCACHED_MEMORY
273 static int initr_noncached(void)
280 #ifdef CONFIG_OF_LIVE
281 static int initr_of_live(void)
285 bootstage_start(BOOTSTAGE_ID_ACCUM_OF_LIVE, "of_live");
286 ret = of_live_build(gd->fdt_blob, (struct device_node **)&gd->of_root);
287 bootstage_accum(BOOTSTAGE_ID_ACCUM_OF_LIVE);
296 static int initr_dm(void)
300 /* Save the pre-reloc driver model and start a new one */
301 gd->dm_root_f = gd->dm_root;
306 bootstage_start(BOOTSTATE_ID_ACCUM_DM_R, "dm_r");
307 ret = dm_init_and_scan(false);
308 bootstage_accum(BOOTSTATE_ID_ACCUM_DM_R);
311 #ifdef CONFIG_TIMER_EARLY
312 ret = dm_timer_init();
321 static int initr_bootstage(void)
323 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
328 __weak int power_init_board(void)
333 static int initr_announce(void)
335 debug("Now running in RAM - U-Boot at: %08lx\n", gd->relocaddr);
339 #ifdef CONFIG_NEEDS_MANUAL_RELOC
340 static int initr_manual_reloc_cmdtable(void)
342 fixup_cmdtable(ll_entry_start(cmd_tbl_t, cmd),
343 ll_entry_count(cmd_tbl_t, cmd));
348 #if defined(CONFIG_MTD_NOR_FLASH)
349 static int initr_flash(void)
351 ulong flash_size = 0;
356 if (board_flash_wp_on())
357 printf("Uninitialized - Write Protect On\n");
359 flash_size = flash_init();
361 print_size(flash_size, "");
362 #ifdef CONFIG_SYS_FLASH_CHECKSUM
364 * Compute and print flash CRC if flashchecksum is set to 'y'
366 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
368 if (env_get_yesno("flashchecksum") == 1) {
369 const uchar *flash_base = (const uchar *)CONFIG_SYS_FLASH_BASE;
371 printf(" CRC: %08X", crc32(0,
375 #endif /* CONFIG_SYS_FLASH_CHECKSUM */
378 /* update start of FLASH memory */
379 #ifdef CONFIG_SYS_FLASH_BASE
380 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
382 /* size of FLASH memory (final value) */
383 bd->bi_flashsize = flash_size;
385 #if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
386 /* Make a update of the Memctrl. */
387 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 #ifdef CONFIG_CMD_NAND
401 /* go init the NAND */
402 static int initr_nand(void)
406 printf("%lu MiB\n", nand_size() / 1024);
411 #if defined(CONFIG_CMD_ONENAND)
412 /* go init the NAND */
413 static int initr_onenand(void)
422 static int initr_mmc(void)
425 mmc_initialize(gd->bd);
431 * Tell if it's OK to load the environment early in boot.
433 * If CONFIG_OF_CONTROL is defined, we'll check with the FDT to see
434 * if this is OK (defaulting to saying it's OK).
436 * NOTE: Loading the environment early can be a bad idea if security is
437 * important, since no verification is done on the environment.
439 * @return 0 if environment should not be loaded, !=0 if it is ok to load
441 static int should_load_env(void)
443 #ifdef CONFIG_OF_CONTROL
444 return fdtdec_get_config_int(gd->fdt_blob, "load-environment", 1);
445 #elif defined CONFIG_DELAY_ENVIRONMENT
452 static int initr_env(void)
454 /* initialize environment */
455 if (should_load_env())
458 env_set_default(NULL, 0);
459 #ifdef CONFIG_OF_CONTROL
460 env_set_hex("fdtcontroladdr",
461 (unsigned long)map_to_sysmem(gd->fdt_blob));
464 /* Initialize from environment */
465 load_addr = env_get_ulong("loadaddr", 16, load_addr);
470 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
471 static int initr_malloc_bootparams(void)
473 gd->bd->bi_boot_params = (ulong)malloc(CONFIG_SYS_BOOTPARAMS_LEN);
474 if (!gd->bd->bi_boot_params) {
475 puts("WARNING: Cannot allocate space for boot parameters\n");
482 static int initr_jumptable(void)
488 #if defined(CONFIG_API)
489 static int initr_api(void)
497 /* enable exceptions */
499 static int initr_enable_interrupts(void)
506 #ifdef CONFIG_CMD_NET
507 static int initr_ethaddr(void)
511 /* kept around for legacy kernels only ... ignore the next section */
512 eth_env_get_enetaddr("ethaddr", bd->bi_enetaddr);
513 #ifdef CONFIG_HAS_ETH1
514 eth_env_get_enetaddr("eth1addr", bd->bi_enet1addr);
516 #ifdef CONFIG_HAS_ETH2
517 eth_env_get_enetaddr("eth2addr", bd->bi_enet2addr);
519 #ifdef CONFIG_HAS_ETH3
520 eth_env_get_enetaddr("eth3addr", bd->bi_enet3addr);
522 #ifdef CONFIG_HAS_ETH4
523 eth_env_get_enetaddr("eth4addr", bd->bi_enet4addr);
525 #ifdef CONFIG_HAS_ETH5
526 eth_env_get_enetaddr("eth5addr", bd->bi_enet5addr);
530 #endif /* CONFIG_CMD_NET */
532 #ifdef CONFIG_CMD_KGDB
533 static int initr_kgdb(void)
541 #if defined(CONFIG_LED_STATUS)
542 static int initr_status_led(void)
544 #if defined(CONFIG_LED_STATUS_BOOT)
545 status_led_set(CONFIG_LED_STATUS_BOOT, CONFIG_LED_STATUS_BLINKING);
553 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
554 static int initr_scsi(void)
564 #ifdef CONFIG_BITBANGMII
565 static int initr_bbmii(void)
572 #ifdef CONFIG_CMD_NET
573 static int initr_net(void)
577 #if defined(CONFIG_RESET_PHY_R)
578 debug("Reset Ethernet PHY\n");
586 static int initr_post(void)
588 post_run(NULL, POST_RAM | post_bootmode_get(0));
593 #if defined(CONFIG_IDE) && !defined(CONFIG_BLK)
594 static int initr_ide(void)
597 #if defined(CONFIG_START_IDE)
598 if (board_start_ide())
607 #if defined(CONFIG_PRAM)
609 * Export available size of memory for Linux, taking into account the
610 * protected RAM at top of memory
617 pram = env_get_ulong("pram", 10, CONFIG_PRAM);
618 sprintf(memsz, "%ldk", (long int)((gd->ram_size / 1024) - pram));
619 env_set("mem", memsz);
625 #ifdef CONFIG_CMD_BEDBUG
626 static int initr_bedbug(void)
634 static int run_main_loop(void)
636 #ifdef CONFIG_SANDBOX
637 sandbox_main_loop_init();
639 /* main_loop() can return to retry autoboot, if so just run it again */
646 * We hope to remove most of the driver-related init and do it if/when
647 * the driver is later used.
649 * TODO: perhaps reset the watchdog in the initcall function after each call?
651 static init_fnc_t init_sequence_r[] = {
654 /* TODO: could x86/PPC have this also perhaps? */
657 /* Note: For Freescale LS2 SoCs, new MMU table is created in DDR.
658 * A temporary mapping of IFC high region is since removed,
659 * so environmental variables in NOR flash is not available
660 * until board_init() is called below to remap IFC to high
664 initr_reloc_global_data,
665 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
666 initr_unlock_ram_in_cache,
671 initr_bootstage, /* Needs malloc() but has its own timer */
672 initr_console_record,
673 #ifdef CONFIG_SYS_NONCACHED_MEMORY
676 #ifdef CONFIG_OF_LIVE
682 #if defined(CONFIG_ARM) || defined(CONFIG_NDS32) || defined(CONFIG_RISCV) || \
683 defined(CONFIG_SANDBOX)
684 board_init, /* Setup chipselects */
687 * TODO: printing of the clock inforamtion of the board is now
688 * implemented as part of bdinfo command. Currently only support for
689 * davinci SOC's is added. Remove this check once all the board
693 set_cpu_clk_info, /* Setup clock information */
695 #ifdef CONFIG_EFI_LOADER
701 #if CONFIG_IS_ENABLED(WDT)
704 INIT_FUNC_WATCHDOG_RESET
705 #ifdef CONFIG_NEEDS_MANUAL_RELOC
706 initr_manual_reloc_cmdtable,
708 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_MIPS)
711 #ifdef CONFIG_ADDR_MAP
714 #if defined(CONFIG_BOARD_EARLY_INIT_R)
717 INIT_FUNC_WATCHDOG_RESET
721 INIT_FUNC_WATCHDOG_RESET
722 #if defined(CONFIG_PCI) && defined(CONFIG_SYS_EARLY_PCI_INIT)
724 * Do early PCI configuration _before_ the flash gets initialised,
725 * because PCU resources are crucial for flash access on some boards.
729 #ifdef CONFIG_ARCH_EARLY_INIT_R
733 #ifdef CONFIG_MTD_NOR_FLASH
736 INIT_FUNC_WATCHDOG_RESET
737 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_X86)
738 /* initialize higher level parts of CPU like time base and timers */
741 #ifdef CONFIG_CMD_NAND
744 #ifdef CONFIG_CMD_ONENAND
751 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
752 initr_malloc_bootparams,
754 INIT_FUNC_WATCHDOG_RESET
756 #if defined(CONFIG_ID_EEPROM) || defined(CONFIG_SYS_I2C_MAC_OFFSET)
757 mac_read_from_eeprom,
759 INIT_FUNC_WATCHDOG_RESET
760 #if defined(CONFIG_PCI) && !defined(CONFIG_SYS_EARLY_PCI_INIT)
762 * Do pci configuration
771 console_init_r, /* fully init console as a device */
772 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
776 #ifdef CONFIG_ARCH_MISC_INIT
777 arch_misc_init, /* miscellaneous arch-dependent init */
779 #ifdef CONFIG_MISC_INIT_R
780 misc_init_r, /* miscellaneous platform-dependent init */
782 INIT_FUNC_WATCHDOG_RESET
783 #ifdef CONFIG_CMD_KGDB
788 initr_enable_interrupts,
790 #if defined(CONFIG_MICROBLAZE) || defined(CONFIG_M68K)
791 timer_init, /* initialize timer */
793 #if defined(CONFIG_LED_STATUS)
796 /* PPC has a udelay(20) here dating from 2002. Why? */
797 #ifdef CONFIG_CMD_NET
800 #if defined(CONFIG_GPIO_HOG)
803 #ifdef CONFIG_BOARD_LATE_INIT
806 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
807 INIT_FUNC_WATCHDOG_RESET
810 #ifdef CONFIG_BITBANGMII
813 #ifdef CONFIG_CMD_NET
814 INIT_FUNC_WATCHDOG_RESET
820 #if defined(CONFIG_IDE) && !defined(CONFIG_BLK)
823 #ifdef CONFIG_LAST_STAGE_INIT
824 INIT_FUNC_WATCHDOG_RESET
826 * Some parts can be only initialized if all others (like
827 * Interrupts) are up and running (i.e. the PC-style ISA
832 #ifdef CONFIG_CMD_BEDBUG
833 INIT_FUNC_WATCHDOG_RESET
836 #if defined(CONFIG_PRAM)
842 void board_init_r(gd_t *new_gd, ulong dest_addr)
845 * Set up the new global data pointer. So far only x86 does this
848 * dropping the new_gd parameter.
850 #if CONFIG_IS_ENABLED(X86_64)
851 arch_setup_gd(new_gd);
854 #ifdef CONFIG_NEEDS_MANUAL_RELOC
858 #if !defined(CONFIG_X86) && !defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
861 gd->flags &= ~GD_FLG_LOG_READY;
863 #ifdef CONFIG_NEEDS_MANUAL_RELOC
864 for (i = 0; i < ARRAY_SIZE(init_sequence_r); i++)
865 init_sequence_r[i] += gd->reloc_off;
868 if (initcall_run_list(init_sequence_r))
871 /* NOTREACHED - run_main_loop() does not return */