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 #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 (CONFIG_IS_ENABLED(OF_EMBED) && CONFIG_IS_ENABLED(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 malloc_start = gd->relocaddr - TOTAL_MALLOC_LEN;
211 mem_malloc_init((ulong)map_sysmem(malloc_start, TOTAL_MALLOC_LEN),
216 static int initr_of_live(void)
218 if (CONFIG_IS_ENABLED(OF_LIVE)) {
221 bootstage_start(BOOTSTAGE_ID_ACCUM_OF_LIVE, "of_live");
222 ret = of_live_build(gd->fdt_blob,
223 (struct device_node **)gd_of_root_ptr());
224 bootstage_accum(BOOTSTAGE_ID_ACCUM_OF_LIVE);
233 static int initr_dm(void)
239 /* Save the pre-reloc driver model and start a new one */
240 gd->dm_root_f = gd->dm_root;
245 bootstage_start(BOOTSTAGE_ID_ACCUM_DM_R, "dm_r");
246 ret = dm_init_and_scan(false);
247 bootstage_accum(BOOTSTAGE_ID_ACCUM_DM_R);
255 static int initr_dm_devices(void)
259 if (IS_ENABLED(CONFIG_TIMER_EARLY)) {
260 ret = dm_timer_init();
265 if (IS_ENABLED(CONFIG_MULTIPLEXER)) {
267 * Initialize the multiplexer controls to their default state.
268 * This must be done early as other drivers may unknowingly
279 static int initr_bootstage(void)
281 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
286 __weak int power_init_board(void)
291 static int initr_announce(void)
293 debug("Now running in RAM - U-Boot at: %08lx\n", gd->relocaddr);
297 #ifdef CONFIG_NEEDS_MANUAL_RELOC
298 static int initr_manual_reloc_cmdtable(void)
300 fixup_cmdtable(ll_entry_start(struct cmd_tbl, cmd),
301 ll_entry_count(struct cmd_tbl, cmd));
306 static int initr_binman(void)
310 if (!CONFIG_IS_ENABLED(BINMAN_FDT))
315 printf("binman_init failed:%d\n", ret);
320 #if defined(CONFIG_MTD_NOR_FLASH)
321 __weak int is_flash_available(void)
326 static int initr_flash(void)
328 ulong flash_size = 0;
329 struct bd_info *bd = gd->bd;
331 if (!is_flash_available())
336 if (board_flash_wp_on())
337 printf("Uninitialized - Write Protect On\n");
339 flash_size = flash_init();
341 print_size(flash_size, "");
342 #ifdef CONFIG_SYS_FLASH_CHECKSUM
344 * Compute and print flash CRC if flashchecksum is set to 'y'
346 * NOTE: Maybe we should add some schedule()? XXX
348 if (env_get_yesno("flashchecksum") == 1) {
349 const uchar *flash_base = (const uchar *)CONFIG_SYS_FLASH_BASE;
351 printf(" CRC: %08X", crc32(0,
355 #endif /* CONFIG_SYS_FLASH_CHECKSUM */
358 /* update start of FLASH memory */
359 #ifdef CONFIG_SYS_FLASH_BASE
360 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
362 /* size of FLASH memory (final value) */
363 bd->bi_flashsize = flash_size;
365 #if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
366 /* Make a update of the Memctrl. */
367 update_flash_size(flash_size);
370 #if defined(CONFIG_OXC) || defined(CONFIG_RMU)
371 /* flash mapped at end of memory map */
372 bd->bi_flashoffset = CONFIG_TEXT_BASE + flash_size;
373 #elif CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
374 bd->bi_flashoffset = monitor_flash_len; /* reserved area for monitor */
380 #ifdef CONFIG_CMD_NAND
381 /* go init the NAND */
382 static int initr_nand(void)
386 printf("%lu MiB\n", nand_size() / 1024);
391 #if defined(CONFIG_CMD_ONENAND)
392 /* go init the NAND */
393 static int initr_onenand(void)
402 static int initr_mmc(void)
405 mmc_initialize(gd->bd);
410 #ifdef CONFIG_PVBLOCK
411 static int initr_pvblock(void)
420 * Tell if it's OK to load the environment early in boot.
422 * If CONFIG_OF_CONTROL is defined, we'll check with the FDT to see
423 * if this is OK (defaulting to saying it's OK).
425 * NOTE: Loading the environment early can be a bad idea if security is
426 * important, since no verification is done on the environment.
428 * Return: 0 if environment should not be loaded, !=0 if it is ok to load
430 static int should_load_env(void)
432 if (IS_ENABLED(CONFIG_OF_CONTROL))
433 return ofnode_conf_read_int("load-environment", 1);
435 if (IS_ENABLED(CONFIG_DELAY_ENVIRONMENT))
441 static int initr_env(void)
443 /* initialize environment */
444 if (should_load_env())
447 env_set_default(NULL, 0);
451 if (IS_ENABLED(CONFIG_OF_CONTROL))
452 env_set_hex("fdtcontroladdr",
453 (unsigned long)map_to_sysmem(gd->fdt_blob));
455 #if (CONFIG_IS_ENABLED(SAVE_PREV_BL_INITRAMFS_START_ADDR) || \
456 CONFIG_IS_ENABLED(SAVE_PREV_BL_FDT_ADDR))
460 /* Initialize from environment */
461 image_load_addr = env_get_ulong("loadaddr", 16, image_load_addr);
466 #ifdef CONFIG_SYS_MALLOC_BOOTPARAMS
467 static int initr_malloc_bootparams(void)
469 gd->bd->bi_boot_params = (ulong)malloc(CONFIG_SYS_BOOTPARAMS_LEN);
470 if (!gd->bd->bi_boot_params) {
471 puts("WARNING: Cannot allocate space for boot parameters\n");
478 #if defined(CONFIG_LED_STATUS)
479 static int initr_status_led(void)
481 #if defined(CONFIG_LED_STATUS_BOOT)
482 status_led_set(CONFIG_LED_STATUS_BOOT, CONFIG_LED_STATUS_BLINKING);
490 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
491 static int initr_scsi(void)
501 #ifdef CONFIG_CMD_NET
502 static int initr_net(void)
506 #if defined(CONFIG_RESET_PHY_R)
507 debug("Reset Ethernet PHY\n");
515 static int initr_post(void)
517 post_run(NULL, POST_RAM | post_bootmode_get(0));
522 #if defined(CONFIG_IDE) && !defined(CONFIG_BLK)
523 static int initr_ide(void)
526 #if defined(CONFIG_START_IDE)
527 if (board_start_ide())
536 #if defined(CONFIG_PRAM)
538 * Export available size of memory for Linux, taking into account the
539 * protected RAM at top of memory
546 pram = env_get_ulong("pram", 10, CONFIG_PRAM);
547 sprintf(memsz, "%ldk", (long int)((gd->ram_size / 1024) - pram));
548 env_set("mem", memsz);
554 static int dm_announce(void)
559 if (IS_ENABLED(CONFIG_DM)) {
560 dm_get_stats(&device_count, &uclass_count);
561 printf("Core: %d devices, %d uclasses", device_count,
563 if (CONFIG_IS_ENABLED(OF_REAL))
564 printf(", devicetree: %s", fdtdec_get_srcname());
566 if (IS_ENABLED(CONFIG_OF_HAS_PRIOR_STAGE) &&
567 (gd->fdt_src == FDTSRC_SEPARATE ||
568 gd->fdt_src == FDTSRC_EMBED)) {
569 printf("Warning: Unexpected devicetree source (not from a prior stage)");
570 printf("Warning: U-Boot may not function properly\n");
577 static int run_main_loop(void)
579 #ifdef CONFIG_SANDBOX
580 sandbox_main_loop_init();
582 /* main_loop() can return to retry autoboot, if so just run it again */
589 * We hope to remove most of the driver-related init and do it if/when
590 * the driver is later used.
592 * TODO: perhaps reset the watchdog in the initcall function after each call?
594 static init_fnc_t init_sequence_r[] = {
598 /* TODO: could x86/PPC have this also perhaps? */
599 #if defined(CONFIG_ARM) || defined(CONFIG_RISCV)
601 /* Note: For Freescale LS2 SoCs, new MMU table is created in DDR.
602 * A temporary mapping of IFC high region is since removed,
603 * so environmental variables in NOR flash is not available
604 * until board_init() is called below to remap IFC to high
608 initr_reloc_global_data,
609 #if CONFIG_IS_ENABLED(NEEDS_MANUAL_RELOC) && CONFIG_IS_ENABLED(EVENT)
612 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
613 initr_unlock_ram_in_cache,
619 initr_bootstage, /* Needs malloc() but has its own timer */
620 #if defined(CONFIG_CONSOLE_RECORD)
623 #ifdef CONFIG_SYS_NONCACHED_MEMORY
630 #ifdef CONFIG_ADDR_MAP
633 #if defined(CONFIG_ARM) || defined(CONFIG_RISCV) || defined(CONFIG_SANDBOX)
634 board_init, /* Setup chipselects */
637 * TODO: printing of the clock inforamtion of the board is now
638 * implemented as part of bdinfo command. Currently only support for
639 * davinci SOC's is added. Remove this check once all the board
643 set_cpu_clk_info, /* Setup clock information */
645 #ifdef CONFIG_EFI_LOADER
649 #ifdef CONFIG_FSP_VERSION2
657 #if CONFIG_IS_ENABLED(WDT)
660 INIT_FUNC_WATCHDOG_RESET
661 #if defined(CONFIG_NEEDS_MANUAL_RELOC) && defined(CONFIG_BLOCK_CACHE)
664 #ifdef CONFIG_NEEDS_MANUAL_RELOC
665 initr_manual_reloc_cmdtable,
668 #if defined(CONFIG_BOARD_EARLY_INIT_R)
671 INIT_FUNC_WATCHDOG_RESET
675 INIT_FUNC_WATCHDOG_RESET
676 #if defined(CONFIG_PCI_INIT_R) && defined(CONFIG_SYS_EARLY_PCI_INIT)
678 * Do early PCI configuration _before_ the flash gets initialised,
679 * because PCU resources are crucial for flash access on some boards.
683 #ifdef CONFIG_ARCH_EARLY_INIT_R
687 #ifdef CONFIG_MTD_NOR_FLASH
690 INIT_FUNC_WATCHDOG_RESET
691 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_X86)
692 /* initialize higher level parts of CPU like time base and timers */
695 #ifdef CONFIG_EFI_SETUP_EARLY
698 #ifdef CONFIG_CMD_NAND
701 #ifdef CONFIG_CMD_ONENAND
710 #ifdef CONFIG_PVBLOCK
714 #ifdef CONFIG_SYS_MALLOC_BOOTPARAMS
715 initr_malloc_bootparams,
717 INIT_FUNC_WATCHDOG_RESET
718 cpu_secondary_init_r,
719 #if defined(CONFIG_ID_EEPROM)
720 mac_read_from_eeprom,
722 INIT_FUNC_WATCHDOG_RESET
723 #if defined(CONFIG_PCI_INIT_R) && !defined(CONFIG_SYS_EARLY_PCI_INIT)
725 * Do pci configuration
734 console_init_r, /* fully init console as a device */
735 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
739 #ifdef CONFIG_ARCH_MISC_INIT
740 arch_misc_init, /* miscellaneous arch-dependent init */
742 #ifdef CONFIG_MISC_INIT_R
743 misc_init_r, /* miscellaneous platform-dependent init */
745 INIT_FUNC_WATCHDOG_RESET
746 #ifdef CONFIG_CMD_KGDB
750 #if defined(CONFIG_MICROBLAZE) || defined(CONFIG_M68K)
751 timer_init, /* initialize timer */
753 #if defined(CONFIG_LED_STATUS)
756 /* PPC has a udelay(20) here dating from 2002. Why? */
757 #if defined(CONFIG_GPIO_HOG)
760 #ifdef CONFIG_BOARD_LATE_INIT
763 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
764 INIT_FUNC_WATCHDOG_RESET
767 #ifdef CONFIG_BITBANGMII
770 #ifdef CONFIG_PCI_ENDPOINT
773 #ifdef CONFIG_CMD_NET
774 INIT_FUNC_WATCHDOG_RESET
780 #if defined(CONFIG_IDE) && !defined(CONFIG_BLK)
783 #ifdef CONFIG_LAST_STAGE_INIT
784 INIT_FUNC_WATCHDOG_RESET
786 * Some parts can be only initialized if all others (like
787 * Interrupts) are up and running (i.e. the PC-style ISA
792 #if defined(CONFIG_PRAM)
798 void board_init_r(gd_t *new_gd, ulong dest_addr)
801 * Set up the new global data pointer. So far only x86 does this
803 * TODO(sjg@chromium.org): Consider doing this for all archs, or
804 * dropping the new_gd parameter.
806 if (CONFIG_IS_ENABLED(X86_64) && !IS_ENABLED(CONFIG_EFI_APP))
807 arch_setup_gd(new_gd);
809 #if !defined(CONFIG_X86) && !defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
812 gd->flags &= ~GD_FLG_LOG_READY;
814 if (IS_ENABLED(CONFIG_NEEDS_MANUAL_RELOC)) {
815 for (int i = 0; i < ARRAY_SIZE(init_sequence_r); i++)
816 MANUAL_RELOC(init_sequence_r[i]);
819 if (initcall_run_list(init_sequence_r))
822 /* NOTREACHED - run_main_loop() does not return */