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>
23 #include <asm/cache.h>
24 #include <asm/global_data.h>
25 #include <u-boot/crc.h>
31 #include <env_internal.h>
45 #include <onenand_uboot.h>
49 #include <status_led.h>
50 #include <stdio_dev.h>
55 #include <asm/sections.h>
57 #include <dm/ofnode.h>
58 #include <linux/compiler.h>
59 #include <linux/err.h>
60 #include <efi_loader.h>
62 #include <asm-generic/gpio.h>
63 #include <efi_loader.h>
66 DECLARE_GLOBAL_DATA_PTR;
68 ulong monitor_flash_len;
70 __weak int board_flash_wp_on(void)
73 * Most flashes can't be detected when write protection is enabled,
74 * so provide a way to let U-Boot gracefully ignore write protected
80 __weak int cpu_secondary_init_r(void)
85 static int initr_trace(void)
88 trace_init(gd->trace_buff, CONFIG_TRACE_BUFFER_SIZE);
94 static int initr_reloc(void)
96 /* tell others: relocation done */
97 gd->flags |= GD_FLG_RELOC | GD_FLG_FULL_MALLOC_INIT;
102 #if defined(CONFIG_ARM) || defined(CONFIG_RISCV)
104 * Some of these functions are needed purely because the functions they
105 * call return void. If we change them to return 0, these stubs can go away.
107 static int initr_caches(void)
115 __weak int fixup_cpu(void)
120 static int initr_reloc_global_data(void)
123 monitor_flash_len = _end - __image_copy_start;
124 #elif defined(CONFIG_RISCV)
125 monitor_flash_len = (ulong)&_end - (ulong)&_start;
126 #elif !defined(CONFIG_SANDBOX) && !defined(CONFIG_NIOS2)
127 monitor_flash_len = (ulong)&__init_end - gd->relocaddr;
129 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
131 * The gd->cpu pointer is set to an address in flash before relocation.
132 * We need to update it to point to the same CPU entry in RAM.
133 * TODO: why not just add gd->reloc_ofs?
135 gd->arch.cpu += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
138 * If we didn't know the cpu mask & # cores, we can save them of
139 * now rather than 'computing' them constantly
143 #ifdef CONFIG_SYS_RELOC_GD_ENV_ADDR
145 * Relocate the early env_addr pointer unless we know it is not inside
146 * the binary. Some systems need this and for the rest, it doesn't hurt.
148 gd->env_addr += gd->reloc_off;
150 #ifdef CONFIG_OF_EMBED
152 * The fdt_blob needs to be moved to new relocation address
153 * incase of FDT blob is embedded with in image
155 gd->fdt_blob += gd->reloc_off;
157 #ifdef CONFIG_EFI_LOADER
159 * On the ARM architecture gd is mapped to a fixed register (r9 or x18).
160 * As this register may be overwritten by an EFI payload we save it here
161 * and restore it on every callback entered.
165 efi_runtime_relocate(gd->relocaddr, NULL);
171 __weak int arch_initr_trap(void)
176 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
177 static int initr_unlock_ram_in_cache(void)
179 unlock_ram_in_cache(); /* it's time to unlock D-cache in e500 */
184 static int initr_barrier(void)
187 /* TODO: Can we not use dmb() macros for this? */
193 static int initr_malloc(void)
197 #if CONFIG_VAL(SYS_MALLOC_F_LEN)
198 debug("Pre-reloc malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr,
199 gd->malloc_ptr / 1024);
201 /* The malloc area is immediately below the monitor copy in DRAM */
203 * This value MUST match the value of gd->start_addr_sp in board_f.c:
204 * reserve_noncached().
206 malloc_start = gd->relocaddr - TOTAL_MALLOC_LEN;
207 mem_malloc_init((ulong)map_sysmem(malloc_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)
233 /* Save the pre-reloc driver model and start a new one */
234 gd->dm_root_f = gd->dm_root;
239 bootstage_start(BOOTSTAGE_ID_ACCUM_DM_R, "dm_r");
240 ret = dm_init_and_scan(false);
241 bootstage_accum(BOOTSTAGE_ID_ACCUM_DM_R);
249 static int initr_dm_devices(void)
253 if (IS_ENABLED(CONFIG_TIMER_EARLY)) {
254 ret = dm_timer_init();
259 if (IS_ENABLED(CONFIG_MULTIPLEXER)) {
261 * Initialize the multiplexer controls to their default state.
262 * This must be done early as other drivers may unknowingly
273 static int initr_bootstage(void)
275 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
280 __weak int power_init_board(void)
285 static int initr_announce(void)
287 debug("Now running in RAM - U-Boot at: %08lx\n", gd->relocaddr);
291 #ifdef CONFIG_NEEDS_MANUAL_RELOC
292 static int initr_manual_reloc_cmdtable(void)
294 fixup_cmdtable(ll_entry_start(struct cmd_tbl, cmd),
295 ll_entry_count(struct cmd_tbl, cmd));
300 static int initr_binman(void)
304 if (!CONFIG_IS_ENABLED(BINMAN_FDT))
309 printf("binman_init failed:%d\n", ret);
314 #if defined(CONFIG_MTD_NOR_FLASH)
315 __weak int is_flash_available(void)
320 static int initr_flash(void)
322 ulong flash_size = 0;
323 struct bd_info *bd = gd->bd;
325 if (!is_flash_available())
330 if (board_flash_wp_on())
331 printf("Uninitialized - Write Protect On\n");
333 flash_size = flash_init();
335 print_size(flash_size, "");
336 #ifdef CONFIG_SYS_FLASH_CHECKSUM
338 * Compute and print flash CRC if flashchecksum is set to 'y'
340 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
342 if (env_get_yesno("flashchecksum") == 1) {
343 const uchar *flash_base = (const uchar *)CONFIG_SYS_FLASH_BASE;
345 printf(" CRC: %08X", crc32(0,
349 #endif /* CONFIG_SYS_FLASH_CHECKSUM */
352 /* update start of FLASH memory */
353 #ifdef CONFIG_SYS_FLASH_BASE
354 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
356 /* size of FLASH memory (final value) */
357 bd->bi_flashsize = flash_size;
359 #if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
360 /* Make a update of the Memctrl. */
361 update_flash_size(flash_size);
364 #if defined(CONFIG_OXC) || defined(CONFIG_RMU)
365 /* flash mapped at end of memory map */
366 bd->bi_flashoffset = CONFIG_SYS_TEXT_BASE + flash_size;
367 #elif CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
368 bd->bi_flashoffset = monitor_flash_len; /* reserved area for monitor */
374 #ifdef CONFIG_CMD_NAND
375 /* go init the NAND */
376 static int initr_nand(void)
380 printf("%lu MiB\n", nand_size() / 1024);
385 #if defined(CONFIG_CMD_ONENAND)
386 /* go init the NAND */
387 static int initr_onenand(void)
396 static int initr_mmc(void)
399 mmc_initialize(gd->bd);
404 #ifdef CONFIG_PVBLOCK
405 static int initr_pvblock(void)
414 * Tell if it's OK to load the environment early in boot.
416 * If CONFIG_OF_CONTROL is defined, we'll check with the FDT to see
417 * if this is OK (defaulting to saying it's OK).
419 * NOTE: Loading the environment early can be a bad idea if security is
420 * important, since no verification is done on the environment.
422 * Return: 0 if environment should not be loaded, !=0 if it is ok to load
424 static int should_load_env(void)
426 if (IS_ENABLED(CONFIG_OF_CONTROL))
427 return ofnode_conf_read_int("load-environment", 1);
429 if (IS_ENABLED(CONFIG_DELAY_ENVIRONMENT))
435 static int initr_env(void)
437 /* initialize environment */
438 if (should_load_env())
441 env_set_default(NULL, 0);
445 if (IS_ENABLED(CONFIG_OF_CONTROL))
446 env_set_hex("fdtcontroladdr",
447 (unsigned long)map_to_sysmem(gd->fdt_blob));
449 #if (CONFIG_IS_ENABLED(SAVE_PREV_BL_INITRAMFS_START_ADDR) || \
450 CONFIG_IS_ENABLED(SAVE_PREV_BL_FDT_ADDR))
454 /* Initialize from environment */
455 image_load_addr = env_get_ulong("loadaddr", 16, image_load_addr);
460 #ifdef CONFIG_SYS_MALLOC_BOOTPARAMS
461 static int initr_malloc_bootparams(void)
463 gd->bd->bi_boot_params = (ulong)malloc(CONFIG_SYS_BOOTPARAMS_LEN);
464 if (!gd->bd->bi_boot_params) {
465 puts("WARNING: Cannot allocate space for boot parameters\n");
472 #ifdef CONFIG_CMD_NET
473 static int initr_ethaddr(void)
475 struct bd_info *bd = gd->bd;
477 /* kept around for legacy kernels only ... ignore the next section */
478 eth_env_get_enetaddr("ethaddr", bd->bi_enetaddr);
482 #endif /* CONFIG_CMD_NET */
484 #if defined(CONFIG_LED_STATUS)
485 static int initr_status_led(void)
487 #if defined(CONFIG_LED_STATUS_BOOT)
488 status_led_set(CONFIG_LED_STATUS_BOOT, CONFIG_LED_STATUS_BLINKING);
496 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
497 static int initr_scsi(void)
507 #ifdef CONFIG_CMD_NET
508 static int initr_net(void)
512 #if defined(CONFIG_RESET_PHY_R)
513 debug("Reset Ethernet PHY\n");
521 static int initr_post(void)
523 post_run(NULL, POST_RAM | post_bootmode_get(0));
528 #if defined(CONFIG_IDE) && !defined(CONFIG_BLK)
529 static int initr_ide(void)
532 #if defined(CONFIG_START_IDE)
533 if (board_start_ide())
542 #if defined(CONFIG_PRAM)
544 * Export available size of memory for Linux, taking into account the
545 * protected RAM at top of memory
552 pram = env_get_ulong("pram", 10, CONFIG_PRAM);
553 sprintf(memsz, "%ldk", (long int)((gd->ram_size / 1024) - pram));
554 env_set("mem", memsz);
560 static int dm_announce(void)
565 if (IS_ENABLED(CONFIG_DM)) {
566 dm_get_stats(&device_count, &uclass_count);
567 printf("Core: %d devices, %d uclasses", device_count,
569 if (CONFIG_IS_ENABLED(OF_REAL))
570 printf(", devicetree: %s", fdtdec_get_srcname());
572 if (IS_ENABLED(CONFIG_OF_HAS_PRIOR_STAGE) &&
573 (gd->fdt_src == FDTSRC_SEPARATE ||
574 gd->fdt_src == FDTSRC_EMBED)) {
575 printf("Warning: Unexpected devicetree source (not from a prior stage)");
576 printf("Warning: U-Boot may not function properly\n");
583 static int run_main_loop(void)
585 #ifdef CONFIG_SANDBOX
586 sandbox_main_loop_init();
588 /* main_loop() can return to retry autoboot, if so just run it again */
595 * We hope to remove most of the driver-related init and do it if/when
596 * the driver is later used.
598 * TODO: perhaps reset the watchdog in the initcall function after each call?
600 static init_fnc_t init_sequence_r[] = {
604 /* TODO: could x86/PPC have this also perhaps? */
605 #if defined(CONFIG_ARM) || defined(CONFIG_RISCV)
607 /* Note: For Freescale LS2 SoCs, new MMU table is created in DDR.
608 * A temporary mapping of IFC high region is since removed,
609 * so environmental variables in NOR flash is not available
610 * until board_init() is called below to remap IFC to high
614 initr_reloc_global_data,
615 #if CONFIG_IS_ENABLED(NEEDS_MANUAL_RELOC) && CONFIG_IS_ENABLED(EVENT)
618 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
619 initr_unlock_ram_in_cache,
624 initr_bootstage, /* Needs malloc() but has its own timer */
625 #if defined(CONFIG_CONSOLE_RECORD)
628 #ifdef CONFIG_SYS_NONCACHED_MEMORY
635 #ifdef CONFIG_ADDR_MAP
638 #if defined(CONFIG_ARM) || defined(CONFIG_RISCV) || defined(CONFIG_SANDBOX)
639 board_init, /* Setup chipselects */
642 * TODO: printing of the clock inforamtion of the board is now
643 * implemented as part of bdinfo command. Currently only support for
644 * davinci SOC's is added. Remove this check once all the board
648 set_cpu_clk_info, /* Setup clock information */
650 #ifdef CONFIG_EFI_LOADER
654 #ifdef CONFIG_FSP_VERSION2
662 #if CONFIG_IS_ENABLED(WDT)
665 INIT_FUNC_WATCHDOG_RESET
666 #if defined(CONFIG_NEEDS_MANUAL_RELOC) && defined(CONFIG_BLOCK_CACHE)
669 #ifdef CONFIG_NEEDS_MANUAL_RELOC
670 initr_manual_reloc_cmdtable,
673 #if defined(CONFIG_BOARD_EARLY_INIT_R)
676 INIT_FUNC_WATCHDOG_RESET
680 INIT_FUNC_WATCHDOG_RESET
681 #if defined(CONFIG_PCI_INIT_R) && defined(CONFIG_SYS_EARLY_PCI_INIT)
683 * Do early PCI configuration _before_ the flash gets initialised,
684 * because PCU resources are crucial for flash access on some boards.
688 #ifdef CONFIG_ARCH_EARLY_INIT_R
692 #ifdef CONFIG_MTD_NOR_FLASH
695 INIT_FUNC_WATCHDOG_RESET
696 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_X86)
697 /* initialize higher level parts of CPU like time base and timers */
700 #ifdef CONFIG_EFI_SETUP_EARLY
703 #ifdef CONFIG_CMD_NAND
706 #ifdef CONFIG_CMD_ONENAND
715 #ifdef CONFIG_PVBLOCK
719 #ifdef CONFIG_SYS_MALLOC_BOOTPARAMS
720 initr_malloc_bootparams,
722 INIT_FUNC_WATCHDOG_RESET
723 cpu_secondary_init_r,
724 #if defined(CONFIG_ID_EEPROM)
725 mac_read_from_eeprom,
727 INIT_FUNC_WATCHDOG_RESET
728 #if defined(CONFIG_PCI_INIT_R) && !defined(CONFIG_SYS_EARLY_PCI_INIT)
730 * Do pci configuration
739 console_init_r, /* fully init console as a device */
740 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
744 #ifdef CONFIG_ARCH_MISC_INIT
745 arch_misc_init, /* miscellaneous arch-dependent init */
747 #ifdef CONFIG_MISC_INIT_R
748 misc_init_r, /* miscellaneous platform-dependent init */
750 INIT_FUNC_WATCHDOG_RESET
751 #ifdef CONFIG_CMD_KGDB
755 #if defined(CONFIG_MICROBLAZE) || defined(CONFIG_M68K)
756 timer_init, /* initialize timer */
758 #if defined(CONFIG_LED_STATUS)
761 /* PPC has a udelay(20) here dating from 2002. Why? */
762 #ifdef CONFIG_CMD_NET
765 #if defined(CONFIG_GPIO_HOG)
768 #ifdef CONFIG_BOARD_LATE_INIT
771 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
772 INIT_FUNC_WATCHDOG_RESET
775 #ifdef CONFIG_BITBANGMII
778 #ifdef CONFIG_PCI_ENDPOINT
781 #ifdef CONFIG_CMD_NET
782 INIT_FUNC_WATCHDOG_RESET
788 #if defined(CONFIG_IDE) && !defined(CONFIG_BLK)
791 #ifdef CONFIG_LAST_STAGE_INIT
792 INIT_FUNC_WATCHDOG_RESET
794 * Some parts can be only initialized if all others (like
795 * Interrupts) are up and running (i.e. the PC-style ISA
800 #if defined(CONFIG_PRAM)
806 void board_init_r(gd_t *new_gd, ulong dest_addr)
809 * Set up the new global data pointer. So far only x86 does this
811 * TODO(sjg@chromium.org): Consider doing this for all archs, or
812 * dropping the new_gd parameter.
814 if (CONFIG_IS_ENABLED(X86_64) && !IS_ENABLED(CONFIG_EFI_APP))
815 arch_setup_gd(new_gd);
817 #if !defined(CONFIG_X86) && !defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
820 gd->flags &= ~GD_FLG_LOG_READY;
822 if (IS_ENABLED(CONFIG_NEEDS_MANUAL_RELOC)) {
823 for (int i = 0; i < ARRAY_SIZE(init_sequence_r); i++)
824 MANUAL_RELOC(init_sequence_r[i]);
827 if (initcall_run_list(init_sequence_r))
830 /* NOTREACHED - run_main_loop() does not return */