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
27 #include <asm/cache.h>
28 #include <asm/global_data.h>
29 #include <u-boot/crc.h>
35 #include <env_internal.h>
49 #include <onenand_uboot.h>
53 #include <status_led.h>
54 #include <stdio_dev.h>
59 #include <asm/sections.h>
61 #include <dm/ofnode.h>
62 #include <linux/compiler.h>
63 #include <linux/err.h>
64 #include <efi_loader.h>
66 #include <asm-generic/gpio.h>
67 #include <efi_loader.h>
70 DECLARE_GLOBAL_DATA_PTR;
72 ulong monitor_flash_len;
74 __weak int board_flash_wp_on(void)
77 * Most flashes can't be detected when write protection is enabled,
78 * so provide a way to let U-Boot gracefully ignore write protected
84 __weak int cpu_secondary_init_r(void)
89 static int initr_trace(void)
92 trace_init(gd->trace_buff, CONFIG_TRACE_BUFFER_SIZE);
98 static int initr_reloc(void)
100 /* tell others: relocation done */
101 gd->flags |= GD_FLG_RELOC | GD_FLG_FULL_MALLOC_INIT;
106 #if defined(CONFIG_ARM) || defined(CONFIG_RISCV)
108 * Some of these functions are needed purely because the functions they
109 * call return void. If we change them to return 0, these stubs can go away.
111 static int initr_caches(void)
119 __weak int fixup_cpu(void)
124 static int initr_reloc_global_data(void)
127 monitor_flash_len = _end - __image_copy_start;
128 #elif defined(CONFIG_RISCV)
129 monitor_flash_len = (ulong)_end - (ulong)_start;
130 #elif !defined(CONFIG_SANDBOX) && !defined(CONFIG_NIOS2)
131 monitor_flash_len = (ulong)__init_end - gd->relocaddr;
133 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
135 * The gd->cpu pointer is set to an address in flash before relocation.
136 * We need to update it to point to the same CPU entry in RAM.
137 * TODO: why not just add gd->reloc_ofs?
139 gd->arch.cpu += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
142 * If we didn't know the cpu mask & # cores, we can save them of
143 * now rather than 'computing' them constantly
147 #ifdef CONFIG_SYS_RELOC_GD_ENV_ADDR
149 * Relocate the early env_addr pointer unless we know it is not inside
150 * the binary. Some systems need this and for the rest, it doesn't hurt.
152 gd->env_addr += gd->reloc_off;
155 * The fdt_blob needs to be moved to new relocation address
156 * incase of FDT blob is embedded with in image
158 if (IS_ENABLED(CONFIG_OF_EMBED) && IS_ENABLED(CONFIG_NEEDS_MANUAL_RELOC))
159 gd->fdt_blob += gd->reloc_off;
161 #ifdef CONFIG_EFI_LOADER
163 * On the ARM architecture gd is mapped to a fixed register (r9 or x18).
164 * As this register may be overwritten by an EFI payload we save it here
165 * and restore it on every callback entered.
169 efi_runtime_relocate(gd->relocaddr, NULL);
175 __weak int arch_initr_trap(void)
180 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
181 static int initr_unlock_ram_in_cache(void)
183 unlock_ram_in_cache(); /* it's time to unlock D-cache in e500 */
188 static int initr_barrier(void)
191 /* TODO: Can we not use dmb() macros for this? */
197 static int initr_malloc(void)
201 #if CONFIG_VAL(SYS_MALLOC_F_LEN)
202 debug("Pre-reloc malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr,
203 gd->malloc_ptr / 1024);
205 /* The malloc area is immediately below the monitor copy in DRAM */
207 * This value MUST match the value of gd->start_addr_sp in board_f.c:
208 * reserve_noncached().
210 start = gd->relocaddr - TOTAL_MALLOC_LEN;
211 gd_set_malloc_start(start);
212 mem_malloc_init((ulong)map_sysmem(start, TOTAL_MALLOC_LEN),
217 static int initr_of_live(void)
219 if (CONFIG_IS_ENABLED(OF_LIVE)) {
222 bootstage_start(BOOTSTAGE_ID_ACCUM_OF_LIVE, "of_live");
223 ret = of_live_build(gd->fdt_blob,
224 (struct device_node **)gd_of_root_ptr());
225 bootstage_accum(BOOTSTAGE_ID_ACCUM_OF_LIVE);
234 static int initr_dm(void)
240 /* Save the pre-reloc driver model and start a new one */
241 gd->dm_root_f = gd->dm_root;
246 bootstage_start(BOOTSTAGE_ID_ACCUM_DM_R, "dm_r");
247 ret = dm_init_and_scan(false);
248 bootstage_accum(BOOTSTAGE_ID_ACCUM_DM_R);
256 static int initr_dm_devices(void)
260 if (IS_ENABLED(CONFIG_TIMER_EARLY)) {
261 ret = dm_timer_init();
266 if (IS_ENABLED(CONFIG_MULTIPLEXER)) {
268 * Initialize the multiplexer controls to their default state.
269 * This must be done early as other drivers may unknowingly
280 static int initr_bootstage(void)
282 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
287 __weak int power_init_board(void)
292 static int initr_announce(void)
294 debug("Now running in RAM - U-Boot at: %08lx\n", gd->relocaddr);
298 #ifdef CONFIG_NEEDS_MANUAL_RELOC
299 static int initr_manual_reloc_cmdtable(void)
301 fixup_cmdtable(ll_entry_start(struct cmd_tbl, cmd),
302 ll_entry_count(struct cmd_tbl, cmd));
307 static int initr_binman(void)
311 if (!CONFIG_IS_ENABLED(BINMAN_FDT))
316 printf("binman_init failed:%d\n", ret);
321 #if defined(CONFIG_MTD_NOR_FLASH)
322 __weak int is_flash_available(void)
327 static int initr_flash(void)
329 ulong flash_size = 0;
330 struct bd_info *bd = gd->bd;
332 if (!is_flash_available())
337 if (board_flash_wp_on())
338 printf("Uninitialized - Write Protect On\n");
340 flash_size = flash_init();
342 print_size(flash_size, "");
343 #ifdef CONFIG_SYS_FLASH_CHECKSUM
345 * Compute and print flash CRC if flashchecksum is set to 'y'
347 * NOTE: Maybe we should add some schedule()? XXX
349 if (env_get_yesno("flashchecksum") == 1) {
350 const uchar *flash_base = (const uchar *)CFG_SYS_FLASH_BASE;
352 printf(" CRC: %08X", crc32(0,
356 #endif /* CONFIG_SYS_FLASH_CHECKSUM */
359 /* update start of FLASH memory */
360 #ifdef CFG_SYS_FLASH_BASE
361 bd->bi_flashstart = CFG_SYS_FLASH_BASE;
363 /* size of FLASH memory (final value) */
364 bd->bi_flashsize = flash_size;
366 #if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
367 /* Make a update of the Memctrl. */
368 update_flash_size(flash_size);
371 #if defined(CONFIG_OXC) || defined(CONFIG_RMU)
372 /* flash mapped at end of memory map */
373 bd->bi_flashoffset = CONFIG_TEXT_BASE + flash_size;
374 #elif CONFIG_SYS_MONITOR_BASE == CFG_SYS_FLASH_BASE
375 bd->bi_flashoffset = monitor_flash_len; /* reserved area for monitor */
381 #ifdef CONFIG_CMD_NAND
382 /* go init the NAND */
383 static int initr_nand(void)
387 printf("%lu MiB\n", nand_size() / 1024);
392 #if defined(CONFIG_CMD_ONENAND)
393 /* go init the NAND */
394 static int initr_onenand(void)
403 static int initr_mmc(void)
406 mmc_initialize(gd->bd);
411 #ifdef CONFIG_PVBLOCK
412 static int initr_pvblock(void)
421 * Tell if it's OK to load the environment early in boot.
423 * If CONFIG_OF_CONTROL is defined, we'll check with the FDT to see
424 * if this is OK (defaulting to saying it's OK).
426 * NOTE: Loading the environment early can be a bad idea if security is
427 * important, since no verification is done on the environment.
429 * Return: 0 if environment should not be loaded, !=0 if it is ok to load
431 static int should_load_env(void)
433 if (IS_ENABLED(CONFIG_OF_CONTROL))
434 return ofnode_conf_read_int("load-environment", 1);
436 if (IS_ENABLED(CONFIG_DELAY_ENVIRONMENT))
442 static int initr_env(void)
444 /* initialize environment */
445 if (should_load_env())
448 env_set_default(NULL, 0);
452 if (IS_ENABLED(CONFIG_OF_CONTROL))
453 env_set_hex("fdtcontroladdr",
454 (unsigned long)map_to_sysmem(gd->fdt_blob));
456 #if (IS_ENABLED(CONFIG_SAVE_PREV_BL_INITRAMFS_START_ADDR) || \
457 IS_ENABLED(CONFIG_SAVE_PREV_BL_FDT_ADDR))
461 /* Initialize from environment */
462 image_load_addr = env_get_ulong("loadaddr", 16, image_load_addr);
467 #ifdef CONFIG_SYS_MALLOC_BOOTPARAMS
468 static int initr_malloc_bootparams(void)
470 gd->bd->bi_boot_params = (ulong)malloc(CONFIG_SYS_BOOTPARAMS_LEN);
471 if (!gd->bd->bi_boot_params) {
472 puts("WARNING: Cannot allocate space for boot parameters\n");
479 #if defined(CONFIG_LED_STATUS)
480 static int initr_status_led(void)
482 #if defined(CONFIG_LED_STATUS_BOOT)
483 status_led_set(CONFIG_LED_STATUS_BOOT, CONFIG_LED_STATUS_BLINKING);
491 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
492 static int initr_scsi(void)
502 #ifdef CONFIG_CMD_NET
503 static int initr_net(void)
507 #if defined(CONFIG_RESET_PHY_R)
508 debug("Reset Ethernet PHY\n");
516 static int initr_post(void)
518 post_run(NULL, POST_RAM | post_bootmode_get(0));
523 #if defined(CFG_PRAM)
525 * Export available size of memory for Linux, taking into account the
526 * protected RAM at top of memory
533 pram = env_get_ulong("pram", 10, CFG_PRAM);
534 sprintf(memsz, "%ldk", (long int)((gd->ram_size / 1024) - pram));
535 env_set("mem", memsz);
541 static int dm_announce(void)
546 if (IS_ENABLED(CONFIG_DM)) {
547 dm_get_stats(&device_count, &uclass_count);
548 printf("Core: %d devices, %d uclasses", device_count,
550 if (CONFIG_IS_ENABLED(OF_REAL))
551 printf(", devicetree: %s", fdtdec_get_srcname());
553 if (IS_ENABLED(CONFIG_OF_HAS_PRIOR_STAGE) &&
554 (gd->fdt_src == FDTSRC_SEPARATE ||
555 gd->fdt_src == FDTSRC_EMBED)) {
556 printf("Warning: Unexpected devicetree source (not from a prior stage)");
557 printf("Warning: U-Boot may not function properly\n");
559 if (IS_ENABLED(CONFIG_OF_TAG_MIGRATE) &&
560 (gd->flags & GD_FLG_OF_TAG_MIGRATE))
562 * U-Boot will silently fail to work after 2023.07 if
563 * there are old tags present
565 printf("Warning: Device tree includes old 'u-boot,dm-' tags: please fix by 2023.07!\n");
571 static int run_main_loop(void)
573 #ifdef CONFIG_SANDBOX
574 sandbox_main_loop_init();
577 event_notify_null(EVT_MAIN_LOOP);
579 /* main_loop() can return to retry autoboot, if so just run it again */
586 * We hope to remove most of the driver-related init and do it if/when
587 * the driver is later used.
589 * TODO: perhaps reset the watchdog in the initcall function after each call?
591 static init_fnc_t init_sequence_r[] = {
595 /* TODO: could x86/PPC have this also perhaps? */
596 #if defined(CONFIG_ARM) || defined(CONFIG_RISCV)
598 /* Note: For Freescale LS2 SoCs, new MMU table is created in DDR.
599 * A temporary mapping of IFC high region is since removed,
600 * so environmental variables in NOR flash is not available
601 * until board_init() is called below to remap IFC to high
605 initr_reloc_global_data,
606 #if IS_ENABLED(CONFIG_NEEDS_MANUAL_RELOC) && CONFIG_IS_ENABLED(EVENT)
609 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
610 initr_unlock_ram_in_cache,
615 initr_bootstage, /* Needs malloc() but has its own timer */
616 #if defined(CONFIG_CONSOLE_RECORD)
619 #ifdef CONFIG_SYS_NONCACHED_MEMORY
626 #ifdef CONFIG_ADDR_MAP
629 #if defined(CONFIG_ARM) || defined(CONFIG_RISCV) || defined(CONFIG_SANDBOX)
630 board_init, /* Setup chipselects */
633 * TODO: printing of the clock inforamtion of the board is now
634 * implemented as part of bdinfo command. Currently only support for
635 * davinci SOC's is added. Remove this check once all the board
639 set_cpu_clk_info, /* Setup clock information */
641 #ifdef CONFIG_EFI_LOADER
645 #ifdef CONFIG_FSP_VERSION2
653 #if CONFIG_IS_ENABLED(WDT)
656 INIT_FUNC_WATCHDOG_RESET
657 #if defined(CONFIG_NEEDS_MANUAL_RELOC) && defined(CONFIG_BLOCK_CACHE)
660 #ifdef CONFIG_NEEDS_MANUAL_RELOC
661 initr_manual_reloc_cmdtable,
664 #if defined(CONFIG_BOARD_EARLY_INIT_R)
667 INIT_FUNC_WATCHDOG_RESET
671 INIT_FUNC_WATCHDOG_RESET
672 #if defined(CONFIG_PCI_INIT_R) && defined(CONFIG_SYS_EARLY_PCI_INIT)
674 * Do early PCI configuration _before_ the flash gets initialised,
675 * because PCU resources are crucial for flash access on some boards.
679 #ifdef CONFIG_ARCH_EARLY_INIT_R
683 #ifdef CONFIG_MTD_NOR_FLASH
686 INIT_FUNC_WATCHDOG_RESET
687 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_X86)
688 /* initialize higher level parts of CPU like time base and timers */
691 #ifdef CONFIG_EFI_LOADER
694 #ifdef CONFIG_CMD_NAND
697 #ifdef CONFIG_CMD_ONENAND
706 #ifdef CONFIG_PVBLOCK
710 #ifdef CONFIG_SYS_MALLOC_BOOTPARAMS
711 initr_malloc_bootparams,
713 INIT_FUNC_WATCHDOG_RESET
714 cpu_secondary_init_r,
715 #if defined(CONFIG_ID_EEPROM)
716 mac_read_from_eeprom,
718 INIT_FUNC_WATCHDOG_RESET
719 #if defined(CONFIG_PCI_INIT_R) && !defined(CONFIG_SYS_EARLY_PCI_INIT)
721 * Do pci configuration
730 console_init_r, /* fully init console as a device */
731 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
735 #ifdef CONFIG_ARCH_MISC_INIT
736 arch_misc_init, /* miscellaneous arch-dependent init */
738 #ifdef CONFIG_MISC_INIT_R
739 misc_init_r, /* miscellaneous platform-dependent init */
741 INIT_FUNC_WATCHDOG_RESET
742 #ifdef CONFIG_CMD_KGDB
746 #if defined(CONFIG_MICROBLAZE) || defined(CONFIG_M68K)
747 timer_init, /* initialize timer */
749 #if defined(CONFIG_LED_STATUS)
752 /* PPC has a udelay(20) here dating from 2002. Why? */
753 #ifdef CONFIG_BOARD_LATE_INIT
756 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
757 INIT_FUNC_WATCHDOG_RESET
760 #ifdef CONFIG_BITBANGMII
763 #ifdef CONFIG_PCI_ENDPOINT
766 #ifdef CONFIG_CMD_NET
767 INIT_FUNC_WATCHDOG_RESET
773 #ifdef CONFIG_LAST_STAGE_INIT
774 INIT_FUNC_WATCHDOG_RESET
776 * Some parts can be only initialized if all others (like
777 * Interrupts) are up and running (i.e. the PC-style ISA
782 #if defined(CFG_PRAM)
788 void board_init_r(gd_t *new_gd, ulong dest_addr)
791 * The pre-relocation drivers may be using memory that has now gone
792 * away. Mark serial as unavailable - this will fall back to the debug
795 * Do the same with log drivers since the memory may not be available.
797 gd->flags &= ~(GD_FLG_SERIAL_READY | GD_FLG_LOG_READY);
800 * Set up the new global data pointer. So far only x86 does this
803 * dropping the new_gd parameter.
805 if (CONFIG_IS_ENABLED(X86_64) && !IS_ENABLED(CONFIG_EFI_APP))
806 arch_setup_gd(new_gd);
808 #if !defined(CONFIG_X86) && !defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
811 gd->flags &= ~GD_FLG_LOG_READY;
813 if (IS_ENABLED(CONFIG_NEEDS_MANUAL_RELOC)) {
814 for (int i = 0; i < ARRAY_SIZE(init_sequence_r); i++)
815 MANUAL_RELOC(init_sequence_r[i]);
818 if (initcall_run_list(init_sequence_r))
821 /* NOTREACHED - run_main_loop() does not return */