1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (c) 2011 The Chromium OS Authors.
4 * (C) Copyright 2002-2006
5 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
8 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
9 * Marius Groeger <mgroeger@sysgo.de>
14 /* TODO: can we just include all these headers whether needed or not? */
15 #if defined(CONFIG_CMD_BEDBUG)
16 #include <bedbug/type.h>
21 #include <environment.h>
25 #if defined(CONFIG_CMD_KGDB)
30 #ifdef CONFIG_BITBANGMII
36 #include <onenand_uboot.h>
39 #include <stdio_dev.h>
43 #ifdef CONFIG_ADDR_MAP
46 #include <asm/sections.h>
48 #include <linux/compiler.h>
49 #include <linux/err.h>
50 #include <efi_loader.h>
52 #if defined(CONFIG_GPIO_HOG)
56 DECLARE_GLOBAL_DATA_PTR;
58 ulong monitor_flash_len;
60 __weak int board_flash_wp_on(void)
63 * Most flashes can't be detected when write protection is enabled,
64 * so provide a way to let U-Boot gracefully ignore write protected
70 __weak void cpu_secondary_init_r(void)
74 static int initr_secondary_cpu(void)
77 * after non-volatile devices & environment is setup and cpu code have
78 * another round to deal with any initialization that might require
79 * full access to the environment or loading of some image (firmware)
80 * from a non-volatile device
82 /* TODO: maybe define this for all archs? */
83 cpu_secondary_init_r();
88 static int initr_trace(void)
91 trace_init(gd->trace_buff, CONFIG_TRACE_BUFFER_SIZE);
97 static int initr_reloc(void)
99 /* tell others: relocation done */
100 gd->flags |= GD_FLG_RELOC | GD_FLG_FULL_MALLOC_INIT;
107 * Some of these functions are needed purely because the functions they
108 * call return void. If we change them to return 0, these stubs can go away.
110 static int initr_caches(void)
118 __weak int fixup_cpu(void)
123 static int initr_reloc_global_data(void)
126 monitor_flash_len = _end - __image_copy_start;
127 #elif defined(CONFIG_NDS32) || defined(CONFIG_RISCV)
128 monitor_flash_len = (ulong)&_end - (ulong)&_start;
129 #elif !defined(CONFIG_SANDBOX) && !defined(CONFIG_NIOS2)
130 monitor_flash_len = (ulong)&__init_end - gd->relocaddr;
132 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
134 * The gd->cpu pointer is set to an address in flash before relocation.
135 * We need to update it to point to the same CPU entry in RAM.
136 * TODO: why not just add gd->reloc_ofs?
138 gd->arch.cpu += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
141 * If we didn't know the cpu mask & # cores, we can save them of
142 * now rather than 'computing' them constantly
146 #if !defined(CONFIG_ENV_ADDR) || defined(ENV_IS_EMBEDDED)
148 * Relocate the early env_addr pointer unless we know it is not inside
149 * the binary. Some systems need this and for the rest, it doesn't hurt.
151 gd->env_addr += gd->reloc_off;
153 #ifdef CONFIG_OF_EMBED
155 * The fdt_blob needs to be moved to new relocation address
156 * incase of FDT blob is embedded with in image
158 gd->fdt_blob += gd->reloc_off;
160 #ifdef CONFIG_EFI_LOADER
162 * On the ARM architecture gd is mapped to a fixed register (r9 or x18).
163 * As this register may be overwritten by an EFI payload we save it here
164 * and restore it on every callback entered.
168 efi_runtime_relocate(gd->relocaddr, NULL);
174 static int initr_serial(void)
180 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_MIPS)
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)
205 static int initr_post_backlog(void)
207 post_output_backlog();
212 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
213 static int initr_unlock_ram_in_cache(void)
215 unlock_ram_in_cache(); /* it's time to unlock D-cache in e500 */
221 static int initr_pci(void)
223 #ifndef CONFIG_DM_PCI
231 static int initr_barrier(void)
234 /* TODO: Can we not use dmb() macros for this? */
240 static int initr_malloc(void)
244 #if CONFIG_VAL(SYS_MALLOC_F_LEN)
245 debug("Pre-reloc malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr,
246 gd->malloc_ptr / 1024);
248 /* The malloc area is immediately below the monitor copy in DRAM */
249 malloc_start = gd->relocaddr - TOTAL_MALLOC_LEN;
250 mem_malloc_init((ulong)map_sysmem(malloc_start, TOTAL_MALLOC_LEN),
255 static int initr_console_record(void)
257 #if defined(CONFIG_CONSOLE_RECORD)
258 return console_record_init();
264 #ifdef CONFIG_SYS_NONCACHED_MEMORY
265 static int initr_noncached(void)
272 #ifdef CONFIG_OF_LIVE
273 static int initr_of_live(void)
277 bootstage_start(BOOTSTAGE_ID_ACCUM_OF_LIVE, "of_live");
278 ret = of_live_build(gd->fdt_blob, (struct device_node **)&gd->of_root);
279 bootstage_accum(BOOTSTAGE_ID_ACCUM_OF_LIVE);
288 static int initr_dm(void)
292 /* Save the pre-reloc driver model and start a new one */
293 gd->dm_root_f = gd->dm_root;
298 bootstage_start(BOOTSTATE_ID_ACCUM_DM_R, "dm_r");
299 ret = dm_init_and_scan(false);
300 bootstage_accum(BOOTSTATE_ID_ACCUM_DM_R);
303 #ifdef CONFIG_TIMER_EARLY
304 ret = dm_timer_init();
313 static int initr_bootstage(void)
315 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
320 __weak int power_init_board(void)
325 static int initr_announce(void)
327 debug("Now running in RAM - U-Boot at: %08lx\n", gd->relocaddr);
331 #ifdef CONFIG_NEEDS_MANUAL_RELOC
332 static int initr_manual_reloc_cmdtable(void)
334 fixup_cmdtable(ll_entry_start(cmd_tbl_t, cmd),
335 ll_entry_count(cmd_tbl_t, cmd));
340 #if defined(CONFIG_MTD_NOR_FLASH)
341 static int initr_flash(void)
343 ulong flash_size = 0;
348 if (board_flash_wp_on())
349 printf("Uninitialized - Write Protect On\n");
351 flash_size = flash_init();
353 print_size(flash_size, "");
354 #ifdef CONFIG_SYS_FLASH_CHECKSUM
356 * Compute and print flash CRC if flashchecksum is set to 'y'
358 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
360 if (env_get_yesno("flashchecksum") == 1) {
361 const uchar *flash_base = (const uchar *)CONFIG_SYS_FLASH_BASE;
363 printf(" CRC: %08X", crc32(0,
367 #endif /* CONFIG_SYS_FLASH_CHECKSUM */
370 /* update start of FLASH memory */
371 #ifdef CONFIG_SYS_FLASH_BASE
372 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
374 /* size of FLASH memory (final value) */
375 bd->bi_flashsize = flash_size;
377 #if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
378 /* Make a update of the Memctrl. */
379 update_flash_size(flash_size);
382 #if defined(CONFIG_OXC) || defined(CONFIG_RMU)
383 /* flash mapped at end of memory map */
384 bd->bi_flashoffset = CONFIG_SYS_TEXT_BASE + flash_size;
385 #elif CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
386 bd->bi_flashoffset = monitor_flash_len; /* reserved area for monitor */
392 #ifdef CONFIG_CMD_NAND
393 /* go init the NAND */
394 static int initr_nand(void)
398 printf("%lu MiB\n", nand_size() / 1024);
403 #if defined(CONFIG_CMD_ONENAND)
404 /* go init the NAND */
405 static int initr_onenand(void)
414 static int initr_mmc(void)
417 mmc_initialize(gd->bd);
423 * Tell if it's OK to load the environment early in boot.
425 * If CONFIG_OF_CONTROL is defined, we'll check with the FDT to see
426 * if this is OK (defaulting to saying it's OK).
428 * NOTE: Loading the environment early can be a bad idea if security is
429 * important, since no verification is done on the environment.
431 * @return 0 if environment should not be loaded, !=0 if it is ok to load
433 static int should_load_env(void)
435 #ifdef CONFIG_OF_CONTROL
436 return fdtdec_get_config_int(gd->fdt_blob, "load-environment", 1);
437 #elif defined CONFIG_DELAY_ENVIRONMENT
444 static int initr_env(void)
446 /* initialize environment */
447 if (should_load_env())
450 set_default_env(NULL, 0);
451 #ifdef CONFIG_OF_CONTROL
452 env_set_hex("fdtcontroladdr",
453 (unsigned long)map_to_sysmem(gd->fdt_blob));
456 /* Initialize from environment */
457 load_addr = env_get_ulong("loadaddr", 16, load_addr);
462 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
463 static int initr_malloc_bootparams(void)
465 gd->bd->bi_boot_params = (ulong)malloc(CONFIG_SYS_BOOTPARAMS_LEN);
466 if (!gd->bd->bi_boot_params) {
467 puts("WARNING: Cannot allocate space for boot parameters\n");
474 static int initr_jumptable(void)
480 #if defined(CONFIG_API)
481 static int initr_api(void)
489 /* enable exceptions */
491 static int initr_enable_interrupts(void)
498 #ifdef CONFIG_CMD_NET
499 static int initr_ethaddr(void)
503 /* kept around for legacy kernels only ... ignore the next section */
504 eth_env_get_enetaddr("ethaddr", bd->bi_enetaddr);
505 #ifdef CONFIG_HAS_ETH1
506 eth_env_get_enetaddr("eth1addr", bd->bi_enet1addr);
508 #ifdef CONFIG_HAS_ETH2
509 eth_env_get_enetaddr("eth2addr", bd->bi_enet2addr);
511 #ifdef CONFIG_HAS_ETH3
512 eth_env_get_enetaddr("eth3addr", bd->bi_enet3addr);
514 #ifdef CONFIG_HAS_ETH4
515 eth_env_get_enetaddr("eth4addr", bd->bi_enet4addr);
517 #ifdef CONFIG_HAS_ETH5
518 eth_env_get_enetaddr("eth5addr", bd->bi_enet5addr);
522 #endif /* CONFIG_CMD_NET */
524 #ifdef CONFIG_CMD_KGDB
525 static int initr_kgdb(void)
533 #if defined(CONFIG_LED_STATUS)
534 static int initr_status_led(void)
536 #if defined(CONFIG_LED_STATUS_BOOT)
537 status_led_set(CONFIG_LED_STATUS_BOOT, CONFIG_LED_STATUS_BLINKING);
545 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
546 static int initr_scsi(void)
556 #ifdef CONFIG_BITBANGMII
557 static int initr_bbmii(void)
564 #ifdef CONFIG_CMD_NET
565 static int initr_net(void)
569 #if defined(CONFIG_RESET_PHY_R)
570 debug("Reset Ethernet PHY\n");
578 static int initr_post(void)
580 post_run(NULL, POST_RAM | post_bootmode_get(0));
585 #if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_IDE)
586 static int initr_pcmcia(void)
594 #if defined(CONFIG_IDE) && !defined(CONFIG_BLK)
595 static int initr_ide(void)
598 #if defined(CONFIG_START_IDE)
599 if (board_start_ide())
608 #if defined(CONFIG_PRAM)
610 * Export available size of memory for Linux, taking into account the
611 * protected RAM at top of memory
618 pram = env_get_ulong("pram", 10, CONFIG_PRAM);
619 sprintf(memsz, "%ldk", (long int)((gd->ram_size / 1024) - pram));
620 env_set("mem", memsz);
626 #ifdef CONFIG_CMD_BEDBUG
627 static int initr_bedbug(void)
635 static int run_main_loop(void)
637 #ifdef CONFIG_SANDBOX
638 sandbox_main_loop_init();
640 /* main_loop() can return to retry autoboot, if so just run it again */
647 * We hope to remove most of the driver-related init and do it if/when
648 * the driver is later used.
650 * TODO: perhaps reset the watchdog in the initcall function after each call?
652 static init_fnc_t init_sequence_r[] = {
655 /* TODO: could x86/PPC have this also perhaps? */
658 /* Note: For Freescale LS2 SoCs, new MMU table is created in DDR.
659 * A temporary mapping of IFC high region is since removed,
660 * so environmental variables in NOR flash is not available
661 * until board_init() is called below to remap IFC to high
665 initr_reloc_global_data,
666 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
667 initr_unlock_ram_in_cache,
672 initr_bootstage, /* Needs malloc() but has its own timer */
673 initr_console_record,
674 #ifdef CONFIG_SYS_NONCACHED_MEMORY
678 #ifdef CONFIG_OF_LIVE
684 #if defined(CONFIG_ARM) || defined(CONFIG_NDS32) || defined(CONFIG_RISCV) || \
685 defined(CONFIG_SANDBOX)
686 board_init, /* Setup chipselects */
689 * TODO: printing of the clock inforamtion of the board is now
690 * implemented as part of bdinfo command. Currently only support for
691 * davinci SOC's is added. Remove this check once all the board
695 set_cpu_clk_info, /* Setup clock information */
697 #ifdef CONFIG_EFI_LOADER
703 #if CONFIG_IS_ENABLED(WDT)
706 INIT_FUNC_WATCHDOG_RESET
707 #ifdef CONFIG_NEEDS_MANUAL_RELOC
708 initr_manual_reloc_cmdtable,
710 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_MIPS)
713 #ifdef CONFIG_ADDR_MAP
716 #if defined(CONFIG_BOARD_EARLY_INIT_R)
719 INIT_FUNC_WATCHDOG_RESET
723 INIT_FUNC_WATCHDOG_RESET
724 #if defined(CONFIG_PCI) && defined(CONFIG_SYS_EARLY_PCI_INIT)
726 * Do early PCI configuration _before_ the flash gets initialised,
727 * because PCU resources are crucial for flash access on some boards.
731 #ifdef CONFIG_ARCH_EARLY_INIT_R
735 #ifdef CONFIG_MTD_NOR_FLASH
738 INIT_FUNC_WATCHDOG_RESET
739 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_X86)
740 /* initialize higher level parts of CPU like time base and timers */
743 #ifdef CONFIG_CMD_NAND
746 #ifdef CONFIG_CMD_ONENAND
753 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
754 initr_malloc_bootparams,
756 INIT_FUNC_WATCHDOG_RESET
758 #if defined(CONFIG_ID_EEPROM) || defined(CONFIG_SYS_I2C_MAC_OFFSET)
759 mac_read_from_eeprom,
761 INIT_FUNC_WATCHDOG_RESET
762 #if defined(CONFIG_PCI) && !defined(CONFIG_SYS_EARLY_PCI_INIT)
764 * Do pci configuration
773 console_init_r, /* fully init console as a device */
774 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
778 #ifdef CONFIG_ARCH_MISC_INIT
779 arch_misc_init, /* miscellaneous arch-dependent init */
781 #ifdef CONFIG_MISC_INIT_R
782 misc_init_r, /* miscellaneous platform-dependent init */
784 INIT_FUNC_WATCHDOG_RESET
785 #ifdef CONFIG_CMD_KGDB
790 initr_enable_interrupts,
792 #if defined(CONFIG_MICROBLAZE) || defined(CONFIG_M68K)
793 timer_init, /* initialize timer */
795 #if defined(CONFIG_LED_STATUS)
798 /* PPC has a udelay(20) here dating from 2002. Why? */
799 #ifdef CONFIG_CMD_NET
802 #if defined(CONFIG_GPIO_HOG)
805 #ifdef CONFIG_BOARD_LATE_INIT
808 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
809 INIT_FUNC_WATCHDOG_RESET
812 #ifdef CONFIG_BITBANGMII
815 #ifdef CONFIG_CMD_NET
816 INIT_FUNC_WATCHDOG_RESET
822 #if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_IDE)
825 #if defined(CONFIG_IDE) && !defined(CONFIG_BLK)
828 #ifdef CONFIG_LAST_STAGE_INIT
829 INIT_FUNC_WATCHDOG_RESET
831 * Some parts can be only initialized if all others (like
832 * Interrupts) are up and running (i.e. the PC-style ISA
837 #ifdef CONFIG_CMD_BEDBUG
838 INIT_FUNC_WATCHDOG_RESET
841 #if defined(CONFIG_PRAM)
847 void board_init_r(gd_t *new_gd, ulong dest_addr)
850 * Set up the new global data pointer. So far only x86 does this
852 * TODO(sjg@chromium.org): Consider doing this for all archs, or
853 * dropping the new_gd parameter.
855 #if CONFIG_IS_ENABLED(X86_64)
856 arch_setup_gd(new_gd);
859 #ifdef CONFIG_NEEDS_MANUAL_RELOC
863 #if !defined(CONFIG_X86) && !defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
866 gd->flags &= ~GD_FLG_LOG_READY;
868 #ifdef CONFIG_NEEDS_MANUAL_RELOC
869 for (i = 0; i < ARRAY_SIZE(init_sequence_r); i++)
870 init_sequence_r[i] += gd->reloc_off;
873 if (initcall_run_list(init_sequence_r))
876 /* NOTREACHED - run_main_loop() does not return */