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>
14 #include <bootstage.h>
17 #include <display_options.h>
19 #ifdef CONFIG_MTD_NOR_FLASH
28 #include <asm/cache.h>
29 #include <asm/global_data.h>
30 #include <u-boot/crc.h>
36 #include <env_internal.h>
51 #include <onenand_uboot.h>
55 #include <status_led.h>
56 #include <stdio_dev.h>
61 #include <asm/sections.h>
63 #include <dm/ofnode.h>
64 #include <linux/compiler.h>
65 #include <linux/err.h>
66 #include <efi_loader.h>
68 #include <asm-generic/gpio.h>
69 #include <efi_loader.h>
72 DECLARE_GLOBAL_DATA_PTR;
74 ulong monitor_flash_len;
76 __weak int board_flash_wp_on(void)
79 * Most flashes can't be detected when write protection is enabled,
80 * so provide a way to let U-Boot gracefully ignore write protected
86 __weak int cpu_secondary_init_r(void)
91 static int initr_trace(void)
94 trace_init(gd->trace_buff, CONFIG_TRACE_BUFFER_SIZE);
100 static int initr_reloc(void)
102 /* tell others: relocation done */
103 gd->flags |= GD_FLG_RELOC | GD_FLG_FULL_MALLOC_INIT;
108 #if defined(CONFIG_ARM) || defined(CONFIG_RISCV)
110 * Some of these functions are needed purely because the functions they
111 * call return void. If we change them to return 0, these stubs can go away.
113 static int initr_caches(void)
121 __weak int fixup_cpu(void)
126 static int initr_reloc_global_data(void)
129 monitor_flash_len = _end - __image_copy_start;
130 #elif defined(CONFIG_RISCV)
131 monitor_flash_len = (ulong)_end - (ulong)_start;
132 #elif !defined(CONFIG_SANDBOX) && !defined(CONFIG_NIOS2)
133 monitor_flash_len = (ulong)__init_end - gd->relocaddr;
135 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
137 * The gd->cpu pointer is set to an address in flash before relocation.
138 * We need to update it to point to the same CPU entry in RAM.
139 * TODO: why not just add gd->reloc_ofs?
141 gd->arch.cpu += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
144 * If we didn't know the cpu mask & # cores, we can save them of
145 * now rather than 'computing' them constantly
149 #ifdef CONFIG_SYS_RELOC_GD_ENV_ADDR
151 * Relocate the early env_addr pointer unless we know it is not inside
152 * the binary. Some systems need this and for the rest, it doesn't hurt.
154 gd->env_addr += gd->reloc_off;
156 #ifdef CONFIG_EFI_LOADER
158 * On the ARM architecture gd is mapped to a fixed register (r9 or x18).
159 * As this register may be overwritten by an EFI payload we save it here
160 * and restore it on every callback entered.
164 efi_runtime_relocate(gd->relocaddr, NULL);
170 __weak int arch_initr_trap(void)
175 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
176 static int initr_unlock_ram_in_cache(void)
178 unlock_ram_in_cache(); /* it's time to unlock D-cache in e500 */
183 static int initr_barrier(void)
186 /* TODO: Can we not use dmb() macros for this? */
192 static int initr_malloc(void)
196 #if CONFIG_IS_ENABLED(SYS_MALLOC_F)
197 debug("Pre-reloc malloc() used %#x bytes (%d KB)\n", gd->malloc_ptr,
198 gd->malloc_ptr / 1024);
200 /* The malloc area is immediately below the monitor copy in DRAM */
202 * This value MUST match the value of gd->start_addr_sp in board_f.c:
203 * reserve_noncached().
205 start = gd->relocaddr - TOTAL_MALLOC_LEN;
206 gd_set_malloc_start(start);
207 mem_malloc_init((ulong)map_sysmem(start, TOTAL_MALLOC_LEN),
212 static int initr_of_live(void)
214 if (CONFIG_IS_ENABLED(OF_LIVE)) {
217 bootstage_start(BOOTSTAGE_ID_ACCUM_OF_LIVE, "of_live");
218 ret = of_live_build(gd->fdt_blob,
219 (struct device_node **)gd_of_root_ptr());
220 bootstage_accum(BOOTSTAGE_ID_ACCUM_OF_LIVE);
229 static int initr_dm(void)
235 /* Drop the pre-reloc driver model and start a new one */
240 bootstage_start(BOOTSTAGE_ID_ACCUM_DM_R, "dm_r");
241 ret = dm_init_and_scan(false);
242 bootstage_accum(BOOTSTAGE_ID_ACCUM_DM_R);
250 static int initr_dm_devices(void)
254 if (IS_ENABLED(CONFIG_TIMER_EARLY)) {
255 ret = dm_timer_init();
260 if (IS_ENABLED(CONFIG_MULTIPLEXER)) {
262 * Initialize the multiplexer controls to their default state.
263 * This must be done early as other drivers may unknowingly
274 static int initr_bootstage(void)
276 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
281 __weak int power_init_board(void)
286 static int initr_announce(void)
288 debug("Now running in RAM - U-Boot at: %08lx\n", gd->relocaddr);
292 static int initr_binman(void)
296 if (!CONFIG_IS_ENABLED(BINMAN_FDT))
301 printf("binman_init failed:%d\n", ret);
306 #if defined(CONFIG_MTD_NOR_FLASH)
307 __weak int is_flash_available(void)
312 static int initr_flash(void)
314 ulong flash_size = 0;
315 struct bd_info *bd = gd->bd;
317 if (!is_flash_available())
322 if (board_flash_wp_on())
323 printf("Uninitialized - Write Protect On\n");
325 flash_size = flash_init();
327 print_size(flash_size, "");
328 #ifdef CONFIG_SYS_FLASH_CHECKSUM
330 * Compute and print flash CRC if flashchecksum is set to 'y'
332 * NOTE: Maybe we should add some schedule()? XXX
334 if (env_get_yesno("flashchecksum") == 1) {
335 const uchar *flash_base = (const uchar *)CFG_SYS_FLASH_BASE;
337 printf(" CRC: %08X", crc32(0,
341 #endif /* CONFIG_SYS_FLASH_CHECKSUM */
344 /* update start of FLASH memory */
345 #ifdef CFG_SYS_FLASH_BASE
346 bd->bi_flashstart = CFG_SYS_FLASH_BASE;
348 /* size of FLASH memory (final value) */
349 bd->bi_flashsize = flash_size;
351 #if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
352 /* Make a update of the Memctrl. */
353 update_flash_size(flash_size);
356 #if defined(CONFIG_OXC) || defined(CONFIG_RMU)
357 /* flash mapped at end of memory map */
358 bd->bi_flashoffset = CONFIG_TEXT_BASE + flash_size;
359 #elif CONFIG_SYS_MONITOR_BASE == CFG_SYS_FLASH_BASE
360 bd->bi_flashoffset = monitor_flash_len; /* reserved area for monitor */
366 #ifdef CONFIG_CMD_NAND
367 /* go init the NAND */
368 static int initr_nand(void)
372 printf("%lu MiB\n", nand_size() / 1024);
377 #if defined(CONFIG_CMD_ONENAND)
378 /* go init the NAND */
379 static int initr_onenand(void)
388 static int initr_mmc(void)
391 mmc_initialize(gd->bd);
396 #ifdef CONFIG_PVBLOCK
397 static int initr_pvblock(void)
406 * Tell if it's OK to load the environment early in boot.
408 * If CONFIG_OF_CONTROL is defined, we'll check with the FDT to see
409 * if this is OK (defaulting to saying it's OK).
411 * NOTE: Loading the environment early can be a bad idea if security is
412 * important, since no verification is done on the environment.
414 * Return: 0 if environment should not be loaded, !=0 if it is ok to load
416 static int should_load_env(void)
418 if (IS_ENABLED(CONFIG_OF_CONTROL))
419 return ofnode_conf_read_int("load-environment", 1);
421 if (IS_ENABLED(CONFIG_DELAY_ENVIRONMENT))
427 static int initr_env(void)
429 /* initialize environment */
430 if (should_load_env())
433 env_set_default(NULL, 0);
437 if (IS_ENABLED(CONFIG_OF_CONTROL))
438 env_set_hex("fdtcontroladdr",
439 (unsigned long)map_to_sysmem(gd->fdt_blob));
441 #if (IS_ENABLED(CONFIG_SAVE_PREV_BL_INITRAMFS_START_ADDR) || \
442 IS_ENABLED(CONFIG_SAVE_PREV_BL_FDT_ADDR))
446 /* Initialize from environment */
447 image_load_addr = env_get_ulong("loadaddr", 16, image_load_addr);
452 #ifdef CONFIG_SYS_MALLOC_BOOTPARAMS
453 static int initr_malloc_bootparams(void)
455 gd->bd->bi_boot_params = (ulong)malloc(CONFIG_SYS_BOOTPARAMS_LEN);
456 if (!gd->bd->bi_boot_params) {
457 puts("WARNING: Cannot allocate space for boot parameters\n");
464 static int initr_status_led(void)
471 static int initr_boot_led_blink(void)
473 status_led_boot_blink();
480 static int initr_boot_led_on(void)
487 #ifdef CONFIG_CMD_NET
488 static int initr_net(void)
492 #if defined(CONFIG_RESET_PHY_R)
493 debug("Reset Ethernet PHY\n");
501 static int initr_post(void)
503 post_run(NULL, POST_RAM | post_bootmode_get(0));
508 #if defined(CFG_PRAM)
510 * Export available size of memory for Linux, taking into account the
511 * protected RAM at top of memory
518 pram = env_get_ulong("pram", 10, CFG_PRAM);
519 sprintf(memsz, "%ldk", (long int)((gd->ram_size / 1024) - pram));
520 env_set("mem", memsz);
526 static int initr_lmb(void)
528 if (CONFIG_IS_ENABLED(LMB))
534 static int dm_announce(void)
539 if (IS_ENABLED(CONFIG_DM)) {
540 dm_get_stats(&device_count, &uclass_count);
541 printf("Core: %d devices, %d uclasses", device_count,
543 if (CONFIG_IS_ENABLED(OF_REAL))
544 printf(", devicetree: %s", fdtdec_get_srcname());
545 if (CONFIG_IS_ENABLED(UPL))
546 printf(", universal payload active");
548 if (IS_ENABLED(CONFIG_OF_HAS_PRIOR_STAGE) &&
549 (gd->fdt_src == FDTSRC_SEPARATE ||
550 gd->fdt_src == FDTSRC_EMBED)) {
551 printf("Warning: Unexpected devicetree source (not from a prior stage)");
552 printf("Warning: U-Boot may not function properly\n");
554 if (IS_ENABLED(CONFIG_OF_TAG_MIGRATE) &&
555 (gd->flags & GD_FLG_OF_TAG_MIGRATE))
557 * U-Boot will silently fail to work after 2023.07 if
558 * there are old tags present
560 printf("Warning: Device tree includes old 'u-boot,dm-' tags: please fix by 2023.07!\n");
566 static int run_main_loop(void)
568 #ifdef CONFIG_SANDBOX
569 sandbox_main_loop_init();
572 event_notify_null(EVT_MAIN_LOOP);
574 /* main_loop() can return to retry autoboot, if so just run it again */
581 * Over time we hope to remove these functions with code fragments and
582 * stub functions, and instead call the relevant function directly.
584 * We also hope to remove most of the driver-related init and do it if/when
585 * the driver is later used.
587 * TODO: perhaps reset the watchdog in the initcall function after each call?
589 static init_fnc_t init_sequence_r[] = {
593 /* TODO: could x86/PPC have this also perhaps? */
594 #if defined(CONFIG_ARM) || defined(CONFIG_RISCV)
596 /* Note: For Freescale LS2 SoCs, new MMU table is created in DDR.
597 * A temporary mapping of IFC high region is since removed,
598 * so environmental variables in NOR flash is not available
599 * until board_init() is called below to remap IFC to high
603 initr_reloc_global_data,
604 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
605 initr_unlock_ram_in_cache,
610 initr_bootstage, /* Needs malloc() but has its own timer */
611 #if defined(CONFIG_CONSOLE_RECORD)
614 #ifdef CONFIG_SYS_NONCACHED_MEMORY
621 #ifdef CONFIG_ADDR_MAP
624 #if defined(CONFIG_ARM) || defined(CONFIG_RISCV) || defined(CONFIG_SANDBOX)
625 board_init, /* Setup chipselects */
628 * TODO: printing of the clock inforamtion of the board is now
629 * implemented as part of bdinfo command. Currently only support for
630 * davinci SOC's is added. Remove this check once all the board
634 set_cpu_clk_info, /* Setup clock information */
637 #ifdef CONFIG_EFI_LOADER
641 #ifdef CONFIG_FSP_VERSION2
649 #if CONFIG_IS_ENABLED(WDT)
652 INIT_FUNC_WATCHDOG_RESET
654 #if defined(CONFIG_BOARD_EARLY_INIT_R)
657 INIT_FUNC_WATCHDOG_RESET
661 INIT_FUNC_WATCHDOG_RESET
662 #if defined(CONFIG_PCI_INIT_R) && defined(CONFIG_SYS_EARLY_PCI_INIT)
664 * Do early PCI configuration _before_ the flash gets initialised,
665 * because PCU resources are crucial for flash access on some boards.
669 #ifdef CONFIG_ARCH_EARLY_INIT_R
673 #ifdef CONFIG_MTD_NOR_FLASH
676 INIT_FUNC_WATCHDOG_RESET
677 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_X86)
678 /* initialize higher level parts of CPU like time base and timers */
681 #ifdef CONFIG_EFI_LOADER
684 #ifdef CONFIG_CMD_NAND
687 #ifdef CONFIG_CMD_ONENAND
696 #ifdef CONFIG_PVBLOCK
700 #ifdef CONFIG_SYS_MALLOC_BOOTPARAMS
701 initr_malloc_bootparams,
703 INIT_FUNC_WATCHDOG_RESET
704 cpu_secondary_init_r,
705 #if defined(CONFIG_ID_EEPROM)
706 mac_read_from_eeprom,
708 INITCALL_EVENT(EVT_SETTINGS_R),
709 INIT_FUNC_WATCHDOG_RESET
710 #if defined(CONFIG_PCI_INIT_R) && !defined(CONFIG_SYS_EARLY_PCI_INIT)
712 * Do pci configuration
721 console_init_r, /* fully init console as a device */
722 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
726 #ifdef CONFIG_ARCH_MISC_INIT
727 arch_misc_init, /* miscellaneous arch-dependent init */
729 #ifdef CONFIG_MISC_INIT_R
730 misc_init_r, /* miscellaneous platform-dependent init */
732 INIT_FUNC_WATCHDOG_RESET
733 #ifdef CONFIG_CMD_KGDB
737 #if defined(CONFIG_MICROBLAZE) || defined(CONFIG_M68K)
738 timer_init, /* initialize timer */
741 initr_boot_led_blink,
742 /* PPC has a udelay(20) here dating from 2002. Why? */
743 #ifdef CONFIG_BOARD_LATE_INIT
746 #ifdef CONFIG_BITBANGMII
749 #ifdef CONFIG_PCI_ENDPOINT
752 #ifdef CONFIG_CMD_NET
753 INIT_FUNC_WATCHDOG_RESET
759 INIT_FUNC_WATCHDOG_RESET
760 INITCALL_EVENT(EVT_LAST_STAGE_INIT),
761 #if defined(CFG_PRAM)
768 void board_init_r(gd_t *new_gd, ulong dest_addr)
771 * The pre-relocation drivers may be using memory that has now gone
772 * away. Mark serial as unavailable - this will fall back to the debug
775 * Do the same with log drivers since the memory may not be available.
777 gd->flags &= ~(GD_FLG_SERIAL_READY | GD_FLG_LOG_READY);
780 * Set up the new global data pointer. So far only x86 does this
783 * dropping the new_gd parameter.
785 if (CONFIG_IS_ENABLED(X86_64) && !IS_ENABLED(CONFIG_EFI_APP))
786 arch_setup_gd(new_gd);
788 #if !defined(CONFIG_X86) && !defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
791 gd->flags &= ~GD_FLG_LOG_READY;
793 if (initcall_run_list(init_sequence_r))
796 /* NOTREACHED - run_main_loop() does not return */