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 #ifdef CONFIG_MTD_NOR_FLASH
25 #include <asm/cache.h>
26 #include <asm/global_data.h>
27 #include <u-boot/crc.h>
33 #include <env_internal.h>
47 #include <onenand_uboot.h>
51 #include <status_led.h>
52 #include <stdio_dev.h>
57 #include <asm/sections.h>
59 #include <dm/ofnode.h>
60 #include <linux/compiler.h>
61 #include <linux/err.h>
62 #include <efi_loader.h>
64 #include <asm-generic/gpio.h>
65 #include <efi_loader.h>
68 DECLARE_GLOBAL_DATA_PTR;
70 ulong monitor_flash_len;
72 __weak int board_flash_wp_on(void)
75 * Most flashes can't be detected when write protection is enabled,
76 * so provide a way to let U-Boot gracefully ignore write protected
82 __weak int cpu_secondary_init_r(void)
87 static int initr_trace(void)
90 trace_init(gd->trace_buff, CONFIG_TRACE_BUFFER_SIZE);
96 static int initr_reloc(void)
98 /* tell others: relocation done */
99 gd->flags |= GD_FLG_RELOC | GD_FLG_FULL_MALLOC_INIT;
104 #if defined(CONFIG_ARM) || defined(CONFIG_RISCV)
106 * Some of these functions are needed purely because the functions they
107 * call return void. If we change them to return 0, these stubs can go away.
109 static int initr_caches(void)
117 __weak int fixup_cpu(void)
122 static int initr_reloc_global_data(void)
125 monitor_flash_len = _end - __image_copy_start;
126 #elif defined(CONFIG_RISCV)
127 monitor_flash_len = (ulong)&_end - (ulong)&_start;
128 #elif !defined(CONFIG_SANDBOX) && !defined(CONFIG_NIOS2)
129 monitor_flash_len = (ulong)&__init_end - gd->relocaddr;
131 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
133 * The gd->cpu pointer is set to an address in flash before relocation.
134 * We need to update it to point to the same CPU entry in RAM.
135 * TODO: why not just add gd->reloc_ofs?
137 gd->arch.cpu += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
140 * If we didn't know the cpu mask & # cores, we can save them of
141 * now rather than 'computing' them constantly
145 #ifdef CONFIG_SYS_RELOC_GD_ENV_ADDR
147 * Relocate the early env_addr pointer unless we know it is not inside
148 * the binary. Some systems need this and for the rest, it doesn't hurt.
150 gd->env_addr += gd->reloc_off;
152 #ifdef CONFIG_OF_EMBED
154 * The fdt_blob needs to be moved to new relocation address
155 * incase of FDT blob is embedded with in image
157 gd->fdt_blob += gd->reloc_off;
159 #ifdef CONFIG_EFI_LOADER
161 * On the ARM architecture gd is mapped to a fixed register (r9 or x18).
162 * As this register may be overwritten by an EFI payload we save it here
163 * and restore it on every callback entered.
167 efi_runtime_relocate(gd->relocaddr, NULL);
173 __weak int arch_initr_trap(void)
178 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
179 static int initr_unlock_ram_in_cache(void)
181 unlock_ram_in_cache(); /* it's time to unlock D-cache in e500 */
186 static int initr_barrier(void)
189 /* TODO: Can we not use dmb() macros for this? */
195 static int initr_malloc(void)
199 #if CONFIG_VAL(SYS_MALLOC_F_LEN)
200 debug("Pre-reloc malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr,
201 gd->malloc_ptr / 1024);
203 /* The malloc area is immediately below the monitor copy in DRAM */
205 * This value MUST match the value of gd->start_addr_sp in board_f.c:
206 * reserve_noncached().
208 malloc_start = gd->relocaddr - TOTAL_MALLOC_LEN;
209 mem_malloc_init((ulong)map_sysmem(malloc_start, TOTAL_MALLOC_LEN),
214 static int initr_of_live(void)
216 if (CONFIG_IS_ENABLED(OF_LIVE)) {
219 bootstage_start(BOOTSTAGE_ID_ACCUM_OF_LIVE, "of_live");
220 ret = of_live_build(gd->fdt_blob,
221 (struct device_node **)gd_of_root_ptr());
222 bootstage_accum(BOOTSTAGE_ID_ACCUM_OF_LIVE);
231 static int initr_dm(void)
235 /* Save the pre-reloc driver model and start a new one */
236 gd->dm_root_f = gd->dm_root;
241 bootstage_start(BOOTSTAGE_ID_ACCUM_DM_R, "dm_r");
242 ret = dm_init_and_scan(false);
243 bootstage_accum(BOOTSTAGE_ID_ACCUM_DM_R);
251 static int initr_dm_devices(void)
255 if (IS_ENABLED(CONFIG_TIMER_EARLY)) {
256 ret = dm_timer_init();
261 if (IS_ENABLED(CONFIG_MULTIPLEXER)) {
263 * Initialize the multiplexer controls to their default state.
264 * This must be done early as other drivers may unknowingly
275 static int initr_bootstage(void)
277 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
282 __weak int power_init_board(void)
287 static int initr_announce(void)
289 debug("Now running in RAM - U-Boot at: %08lx\n", gd->relocaddr);
293 #ifdef CONFIG_NEEDS_MANUAL_RELOC
294 static int initr_manual_reloc_cmdtable(void)
296 fixup_cmdtable(ll_entry_start(struct cmd_tbl, cmd),
297 ll_entry_count(struct cmd_tbl, cmd));
302 static int initr_binman(void)
306 if (!CONFIG_IS_ENABLED(BINMAN_FDT))
311 printf("binman_init failed:%d\n", ret);
316 #if defined(CONFIG_MTD_NOR_FLASH)
317 __weak int is_flash_available(void)
322 static int initr_flash(void)
324 ulong flash_size = 0;
325 struct bd_info *bd = gd->bd;
327 if (!is_flash_available())
332 if (board_flash_wp_on())
333 printf("Uninitialized - Write Protect On\n");
335 flash_size = flash_init();
337 print_size(flash_size, "");
338 #ifdef CONFIG_SYS_FLASH_CHECKSUM
340 * Compute and print flash CRC if flashchecksum is set to 'y'
342 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
344 if (env_get_yesno("flashchecksum") == 1) {
345 const uchar *flash_base = (const uchar *)CONFIG_SYS_FLASH_BASE;
347 printf(" CRC: %08X", crc32(0,
351 #endif /* CONFIG_SYS_FLASH_CHECKSUM */
354 /* update start of FLASH memory */
355 #ifdef CONFIG_SYS_FLASH_BASE
356 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
358 /* size of FLASH memory (final value) */
359 bd->bi_flashsize = flash_size;
361 #if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
362 /* Make a update of the Memctrl. */
363 update_flash_size(flash_size);
366 #if defined(CONFIG_OXC) || defined(CONFIG_RMU)
367 /* flash mapped at end of memory map */
368 bd->bi_flashoffset = CONFIG_SYS_TEXT_BASE + flash_size;
369 #elif CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
370 bd->bi_flashoffset = monitor_flash_len; /* reserved area for monitor */
376 #ifdef CONFIG_CMD_NAND
377 /* go init the NAND */
378 static int initr_nand(void)
382 printf("%lu MiB\n", nand_size() / 1024);
387 #if defined(CONFIG_CMD_ONENAND)
388 /* go init the NAND */
389 static int initr_onenand(void)
398 static int initr_mmc(void)
401 mmc_initialize(gd->bd);
406 #ifdef CONFIG_PVBLOCK
407 static int initr_pvblock(void)
416 * Tell if it's OK to load the environment early in boot.
418 * If CONFIG_OF_CONTROL is defined, we'll check with the FDT to see
419 * if this is OK (defaulting to saying it's OK).
421 * NOTE: Loading the environment early can be a bad idea if security is
422 * important, since no verification is done on the environment.
424 * Return: 0 if environment should not be loaded, !=0 if it is ok to load
426 static int should_load_env(void)
428 if (IS_ENABLED(CONFIG_OF_CONTROL))
429 return ofnode_conf_read_int("load-environment", 1);
431 if (IS_ENABLED(CONFIG_DELAY_ENVIRONMENT))
437 static int initr_env(void)
439 /* initialize environment */
440 if (should_load_env())
443 env_set_default(NULL, 0);
447 if (IS_ENABLED(CONFIG_OF_CONTROL))
448 env_set_hex("fdtcontroladdr",
449 (unsigned long)map_to_sysmem(gd->fdt_blob));
451 #if (CONFIG_IS_ENABLED(SAVE_PREV_BL_INITRAMFS_START_ADDR) || \
452 CONFIG_IS_ENABLED(SAVE_PREV_BL_FDT_ADDR))
456 /* Initialize from environment */
457 image_load_addr = env_get_ulong("loadaddr", 16, image_load_addr);
462 #ifdef CONFIG_SYS_MALLOC_BOOTPARAMS
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 #if defined(CONFIG_LED_STATUS)
475 static int initr_status_led(void)
477 #if defined(CONFIG_LED_STATUS_BOOT)
478 status_led_set(CONFIG_LED_STATUS_BOOT, CONFIG_LED_STATUS_BLINKING);
486 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
487 static int initr_scsi(void)
497 #ifdef CONFIG_CMD_NET
498 static int initr_net(void)
502 #if defined(CONFIG_RESET_PHY_R)
503 debug("Reset Ethernet PHY\n");
511 static int initr_post(void)
513 post_run(NULL, POST_RAM | post_bootmode_get(0));
518 #if defined(CONFIG_IDE) && !defined(CONFIG_BLK)
519 static int initr_ide(void)
522 #if defined(CONFIG_START_IDE)
523 if (board_start_ide())
532 #if defined(CONFIG_PRAM)
534 * Export available size of memory for Linux, taking into account the
535 * protected RAM at top of memory
542 pram = env_get_ulong("pram", 10, CONFIG_PRAM);
543 sprintf(memsz, "%ldk", (long int)((gd->ram_size / 1024) - pram));
544 env_set("mem", memsz);
550 static int dm_announce(void)
555 if (IS_ENABLED(CONFIG_DM)) {
556 dm_get_stats(&device_count, &uclass_count);
557 printf("Core: %d devices, %d uclasses", device_count,
559 if (CONFIG_IS_ENABLED(OF_REAL))
560 printf(", devicetree: %s", fdtdec_get_srcname());
562 if (IS_ENABLED(CONFIG_OF_HAS_PRIOR_STAGE) &&
563 (gd->fdt_src == FDTSRC_SEPARATE ||
564 gd->fdt_src == FDTSRC_EMBED)) {
565 printf("Warning: Unexpected devicetree source (not from a prior stage)");
566 printf("Warning: U-Boot may not function properly\n");
573 static int run_main_loop(void)
575 #ifdef CONFIG_SANDBOX
576 sandbox_main_loop_init();
578 /* main_loop() can return to retry autoboot, if so just run it again */
585 * We hope to remove most of the driver-related init and do it if/when
586 * the driver is later used.
588 * TODO: perhaps reset the watchdog in the initcall function after each call?
590 static init_fnc_t init_sequence_r[] = {
594 /* TODO: could x86/PPC have this also perhaps? */
595 #if defined(CONFIG_ARM) || defined(CONFIG_RISCV)
597 /* Note: For Freescale LS2 SoCs, new MMU table is created in DDR.
598 * A temporary mapping of IFC high region is since removed,
599 * so environmental variables in NOR flash is not available
600 * until board_init() is called below to remap IFC to high
604 initr_reloc_global_data,
605 #if CONFIG_IS_ENABLED(NEEDS_MANUAL_RELOC) && CONFIG_IS_ENABLED(EVENT)
608 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
609 initr_unlock_ram_in_cache,
614 initr_bootstage, /* Needs malloc() but has its own timer */
615 #if defined(CONFIG_CONSOLE_RECORD)
618 #ifdef CONFIG_SYS_NONCACHED_MEMORY
625 #ifdef CONFIG_ADDR_MAP
628 #if defined(CONFIG_ARM) || defined(CONFIG_RISCV) || defined(CONFIG_SANDBOX)
629 board_init, /* Setup chipselects */
632 * TODO: printing of the clock inforamtion of the board is now
633 * implemented as part of bdinfo command. Currently only support for
634 * davinci SOC's is added. Remove this check once all the board
638 set_cpu_clk_info, /* Setup clock information */
640 #ifdef CONFIG_EFI_LOADER
644 #ifdef CONFIG_FSP_VERSION2
652 #if CONFIG_IS_ENABLED(WDT)
655 INIT_FUNC_WATCHDOG_RESET
656 #if defined(CONFIG_NEEDS_MANUAL_RELOC) && defined(CONFIG_BLOCK_CACHE)
659 #ifdef CONFIG_NEEDS_MANUAL_RELOC
660 initr_manual_reloc_cmdtable,
663 #if defined(CONFIG_BOARD_EARLY_INIT_R)
666 INIT_FUNC_WATCHDOG_RESET
670 INIT_FUNC_WATCHDOG_RESET
671 #if defined(CONFIG_PCI_INIT_R) && defined(CONFIG_SYS_EARLY_PCI_INIT)
673 * Do early PCI configuration _before_ the flash gets initialised,
674 * because PCU resources are crucial for flash access on some boards.
678 #ifdef CONFIG_ARCH_EARLY_INIT_R
682 #ifdef CONFIG_MTD_NOR_FLASH
685 INIT_FUNC_WATCHDOG_RESET
686 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_X86)
687 /* initialize higher level parts of CPU like time base and timers */
690 #ifdef CONFIG_EFI_SETUP_EARLY
693 #ifdef CONFIG_CMD_NAND
696 #ifdef CONFIG_CMD_ONENAND
705 #ifdef CONFIG_PVBLOCK
709 #ifdef CONFIG_SYS_MALLOC_BOOTPARAMS
710 initr_malloc_bootparams,
712 INIT_FUNC_WATCHDOG_RESET
713 cpu_secondary_init_r,
714 #if defined(CONFIG_ID_EEPROM)
715 mac_read_from_eeprom,
717 INIT_FUNC_WATCHDOG_RESET
718 #if defined(CONFIG_PCI_INIT_R) && !defined(CONFIG_SYS_EARLY_PCI_INIT)
720 * Do pci configuration
729 console_init_r, /* fully init console as a device */
730 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
734 #ifdef CONFIG_ARCH_MISC_INIT
735 arch_misc_init, /* miscellaneous arch-dependent init */
737 #ifdef CONFIG_MISC_INIT_R
738 misc_init_r, /* miscellaneous platform-dependent init */
740 INIT_FUNC_WATCHDOG_RESET
741 #ifdef CONFIG_CMD_KGDB
745 #if defined(CONFIG_MICROBLAZE) || defined(CONFIG_M68K)
746 timer_init, /* initialize timer */
748 #if defined(CONFIG_LED_STATUS)
751 /* PPC has a udelay(20) here dating from 2002. Why? */
752 #if defined(CONFIG_GPIO_HOG)
755 #ifdef CONFIG_BOARD_LATE_INIT
758 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
759 INIT_FUNC_WATCHDOG_RESET
762 #ifdef CONFIG_BITBANGMII
765 #ifdef CONFIG_PCI_ENDPOINT
768 #ifdef CONFIG_CMD_NET
769 INIT_FUNC_WATCHDOG_RESET
775 #if defined(CONFIG_IDE) && !defined(CONFIG_BLK)
778 #ifdef CONFIG_LAST_STAGE_INIT
779 INIT_FUNC_WATCHDOG_RESET
781 * Some parts can be only initialized if all others (like
782 * Interrupts) are up and running (i.e. the PC-style ISA
787 #if defined(CONFIG_PRAM)
793 void board_init_r(gd_t *new_gd, ulong dest_addr)
796 * Set up the new global data pointer. So far only x86 does this
798 * TODO(sjg@chromium.org): Consider doing this for all archs, or
799 * dropping the new_gd parameter.
801 if (CONFIG_IS_ENABLED(X86_64) && !IS_ENABLED(CONFIG_EFI_APP))
802 arch_setup_gd(new_gd);
804 #if !defined(CONFIG_X86) && !defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
807 gd->flags &= ~GD_FLG_LOG_READY;
809 if (IS_ENABLED(CONFIG_NEEDS_MANUAL_RELOC)) {
810 for (int i = 0; i < ARRAY_SIZE(init_sequence_r); i++)
811 MANUAL_RELOC(init_sequence_r[i]);
814 if (initcall_run_list(init_sequence_r))
817 /* NOTREACHED - run_main_loop() does not return */