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>
65 DECLARE_GLOBAL_DATA_PTR;
67 ulong monitor_flash_len;
69 __weak int board_flash_wp_on(void)
72 * Most flashes can't be detected when write protection is enabled,
73 * so provide a way to let U-Boot gracefully ignore write protected
79 __weak int cpu_secondary_init_r(void)
84 static int initr_trace(void)
87 trace_init(gd->trace_buff, CONFIG_TRACE_BUFFER_SIZE);
93 static int initr_reloc(void)
95 /* tell others: relocation done */
96 gd->flags |= GD_FLG_RELOC | GD_FLG_FULL_MALLOC_INIT;
101 #if defined(CONFIG_ARM) || defined(CONFIG_RISCV)
103 * Some of these functions are needed purely because the functions they
104 * call return void. If we change them to return 0, these stubs can go away.
106 static int initr_caches(void)
114 __weak int fixup_cpu(void)
119 static int initr_reloc_global_data(void)
122 monitor_flash_len = _end - __image_copy_start;
123 #elif defined(CONFIG_RISCV)
124 monitor_flash_len = (ulong)&_end - (ulong)&_start;
125 #elif !defined(CONFIG_SANDBOX) && !defined(CONFIG_NIOS2)
126 monitor_flash_len = (ulong)&__init_end - gd->relocaddr;
128 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
130 * The gd->cpu pointer is set to an address in flash before relocation.
131 * We need to update it to point to the same CPU entry in RAM.
132 * TODO: why not just add gd->reloc_ofs?
134 gd->arch.cpu += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
137 * If we didn't know the cpu mask & # cores, we can save them of
138 * now rather than 'computing' them constantly
142 #ifdef CONFIG_SYS_RELOC_GD_ENV_ADDR
144 * Relocate the early env_addr pointer unless we know it is not inside
145 * the binary. Some systems need this and for the rest, it doesn't hurt.
147 gd->env_addr += gd->reloc_off;
149 #ifdef CONFIG_OF_EMBED
151 * The fdt_blob needs to be moved to new relocation address
152 * incase of FDT blob is embedded with in image
154 gd->fdt_blob += 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_VAL(SYS_MALLOC_F_LEN)
197 debug("Pre-reloc malloc() used %#lx bytes (%ld 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 malloc_start = gd->relocaddr - TOTAL_MALLOC_LEN;
206 mem_malloc_init((ulong)map_sysmem(malloc_start, TOTAL_MALLOC_LEN),
211 static int initr_of_live(void)
213 if (CONFIG_IS_ENABLED(OF_LIVE)) {
216 bootstage_start(BOOTSTAGE_ID_ACCUM_OF_LIVE, "of_live");
217 ret = of_live_build(gd->fdt_blob,
218 (struct device_node **)gd_of_root_ptr());
219 bootstage_accum(BOOTSTAGE_ID_ACCUM_OF_LIVE);
228 static int initr_dm(void)
232 /* Save the pre-reloc driver model and start a new one */
233 gd->dm_root_f = gd->dm_root;
238 bootstage_start(BOOTSTAGE_ID_ACCUM_DM_R, "dm_r");
239 ret = dm_init_and_scan(false);
240 bootstage_accum(BOOTSTAGE_ID_ACCUM_DM_R);
248 static int initr_dm_devices(void)
252 if (IS_ENABLED(CONFIG_TIMER_EARLY)) {
253 ret = dm_timer_init();
258 if (IS_ENABLED(CONFIG_MULTIPLEXER)) {
260 * Initialize the multiplexer controls to their default state.
261 * This must be done early as other drivers may unknowingly
272 static int initr_bootstage(void)
274 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
279 __weak int power_init_board(void)
284 static int initr_announce(void)
286 debug("Now running in RAM - U-Boot at: %08lx\n", gd->relocaddr);
290 #ifdef CONFIG_NEEDS_MANUAL_RELOC
291 static int initr_manual_reloc_cmdtable(void)
293 fixup_cmdtable(ll_entry_start(struct cmd_tbl, cmd),
294 ll_entry_count(struct cmd_tbl, cmd));
299 static int initr_binman(void)
303 if (!CONFIG_IS_ENABLED(BINMAN_FDT))
308 printf("binman_init failed:%d\n", ret);
313 #if defined(CONFIG_MTD_NOR_FLASH)
314 __weak int is_flash_available(void)
319 static int initr_flash(void)
321 ulong flash_size = 0;
322 struct bd_info *bd = gd->bd;
324 if (!is_flash_available())
329 if (board_flash_wp_on())
330 printf("Uninitialized - Write Protect On\n");
332 flash_size = flash_init();
334 print_size(flash_size, "");
335 #ifdef CONFIG_SYS_FLASH_CHECKSUM
337 * Compute and print flash CRC if flashchecksum is set to 'y'
339 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
341 if (env_get_yesno("flashchecksum") == 1) {
342 const uchar *flash_base = (const uchar *)CONFIG_SYS_FLASH_BASE;
344 printf(" CRC: %08X", crc32(0,
348 #endif /* CONFIG_SYS_FLASH_CHECKSUM */
351 /* update start of FLASH memory */
352 #ifdef CONFIG_SYS_FLASH_BASE
353 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
355 /* size of FLASH memory (final value) */
356 bd->bi_flashsize = flash_size;
358 #if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
359 /* Make a update of the Memctrl. */
360 update_flash_size(flash_size);
363 #if defined(CONFIG_OXC) || defined(CONFIG_RMU)
364 /* flash mapped at end of memory map */
365 bd->bi_flashoffset = CONFIG_SYS_TEXT_BASE + flash_size;
366 #elif CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
367 bd->bi_flashoffset = monitor_flash_len; /* reserved area for monitor */
373 #ifdef CONFIG_CMD_NAND
374 /* go init the NAND */
375 static int initr_nand(void)
379 printf("%lu MiB\n", nand_size() / 1024);
384 #if defined(CONFIG_CMD_ONENAND)
385 /* go init the NAND */
386 static int initr_onenand(void)
395 static int initr_mmc(void)
398 mmc_initialize(gd->bd);
403 #ifdef CONFIG_PVBLOCK
404 static int initr_pvblock(void)
413 * Tell if it's OK to load the environment early in boot.
415 * If CONFIG_OF_CONTROL is defined, we'll check with the FDT to see
416 * if this is OK (defaulting to saying it's OK).
418 * NOTE: Loading the environment early can be a bad idea if security is
419 * important, since no verification is done on the environment.
421 * Return: 0 if environment should not be loaded, !=0 if it is ok to load
423 static int should_load_env(void)
425 if (IS_ENABLED(CONFIG_OF_CONTROL))
426 return ofnode_conf_read_int("load-environment", 1);
428 if (IS_ENABLED(CONFIG_DELAY_ENVIRONMENT))
434 static int initr_env(void)
436 /* initialize environment */
437 if (should_load_env())
440 env_set_default(NULL, 0);
444 if (IS_ENABLED(CONFIG_OF_CONTROL))
445 env_set_hex("fdtcontroladdr",
446 (unsigned long)map_to_sysmem(gd->fdt_blob));
448 #if (CONFIG_IS_ENABLED(SAVE_PREV_BL_INITRAMFS_START_ADDR) || \
449 CONFIG_IS_ENABLED(SAVE_PREV_BL_FDT_ADDR))
453 /* Initialize from environment */
454 image_load_addr = env_get_ulong("loadaddr", 16, image_load_addr);
459 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
460 static int initr_malloc_bootparams(void)
462 gd->bd->bi_boot_params = (ulong)malloc(CONFIG_SYS_BOOTPARAMS_LEN);
463 if (!gd->bd->bi_boot_params) {
464 puts("WARNING: Cannot allocate space for boot parameters\n");
471 #ifdef CONFIG_CMD_NET
472 static int initr_ethaddr(void)
474 struct bd_info *bd = gd->bd;
476 /* kept around for legacy kernels only ... ignore the next section */
477 eth_env_get_enetaddr("ethaddr", bd->bi_enetaddr);
481 #endif /* CONFIG_CMD_NET */
483 #if defined(CONFIG_LED_STATUS)
484 static int initr_status_led(void)
486 #if defined(CONFIG_LED_STATUS_BOOT)
487 status_led_set(CONFIG_LED_STATUS_BOOT, CONFIG_LED_STATUS_BLINKING);
495 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
496 static int initr_scsi(void)
506 #ifdef CONFIG_CMD_NET
507 static int initr_net(void)
511 #if defined(CONFIG_RESET_PHY_R)
512 debug("Reset Ethernet PHY\n");
520 static int initr_post(void)
522 post_run(NULL, POST_RAM | post_bootmode_get(0));
527 #if defined(CONFIG_IDE) && !defined(CONFIG_BLK)
528 static int initr_ide(void)
531 #if defined(CONFIG_START_IDE)
532 if (board_start_ide())
541 #if defined(CONFIG_PRAM)
543 * Export available size of memory for Linux, taking into account the
544 * protected RAM at top of memory
551 pram = env_get_ulong("pram", 10, CONFIG_PRAM);
552 sprintf(memsz, "%ldk", (long int)((gd->ram_size / 1024) - pram));
553 env_set("mem", memsz);
559 static int dm_announce(void)
564 if (IS_ENABLED(CONFIG_DM)) {
565 dm_get_stats(&device_count, &uclass_count);
566 printf("Core: %d devices, %d uclasses", device_count,
568 if (CONFIG_IS_ENABLED(OF_REAL))
569 printf(", devicetree: %s", fdtdec_get_srcname());
571 if (IS_ENABLED(CONFIG_OF_HAS_PRIOR_STAGE) &&
572 (gd->fdt_src == FDTSRC_SEPARATE ||
573 gd->fdt_src == FDTSRC_EMBED)) {
574 printf("Warning: Unexpected devicetree source (not from a prior stage)");
575 printf("Warning: U-Boot may not function properly\n");
582 static int run_main_loop(void)
584 #ifdef CONFIG_SANDBOX
585 sandbox_main_loop_init();
587 /* main_loop() can return to retry autoboot, if so just run it again */
594 * We hope to remove most of the driver-related init and do it if/when
595 * the driver is later used.
597 * TODO: perhaps reset the watchdog in the initcall function after each call?
599 static init_fnc_t init_sequence_r[] = {
603 /* TODO: could x86/PPC have this also perhaps? */
604 #if defined(CONFIG_ARM) || defined(CONFIG_RISCV)
606 /* Note: For Freescale LS2 SoCs, new MMU table is created in DDR.
607 * A temporary mapping of IFC high region is since removed,
608 * so environmental variables in NOR flash is not available
609 * until board_init() is called below to remap IFC to high
613 initr_reloc_global_data,
614 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
615 initr_unlock_ram_in_cache,
620 initr_bootstage, /* Needs malloc() but has its own timer */
621 #if defined(CONFIG_CONSOLE_RECORD)
624 #ifdef CONFIG_SYS_NONCACHED_MEMORY
631 #ifdef CONFIG_ADDR_MAP
634 #if defined(CONFIG_ARM) || defined(CONFIG_RISCV) || defined(CONFIG_SANDBOX)
635 board_init, /* Setup chipselects */
638 * TODO: printing of the clock inforamtion of the board is now
639 * implemented as part of bdinfo command. Currently only support for
640 * davinci SOC's is added. Remove this check once all the board
644 set_cpu_clk_info, /* Setup clock information */
646 #ifdef CONFIG_EFI_LOADER
650 #ifdef CONFIG_FSP_VERSION2
658 #if CONFIG_IS_ENABLED(WDT)
661 INIT_FUNC_WATCHDOG_RESET
662 #if defined(CONFIG_NEEDS_MANUAL_RELOC) && defined(CONFIG_BLOCK_CACHE)
665 #ifdef CONFIG_NEEDS_MANUAL_RELOC
666 initr_manual_reloc_cmdtable,
669 #if defined(CONFIG_BOARD_EARLY_INIT_R)
672 INIT_FUNC_WATCHDOG_RESET
676 INIT_FUNC_WATCHDOG_RESET
677 #if defined(CONFIG_PCI_INIT_R) && defined(CONFIG_SYS_EARLY_PCI_INIT)
679 * Do early PCI configuration _before_ the flash gets initialised,
680 * because PCU resources are crucial for flash access on some boards.
684 #ifdef CONFIG_ARCH_EARLY_INIT_R
688 #ifdef CONFIG_MTD_NOR_FLASH
691 INIT_FUNC_WATCHDOG_RESET
692 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_X86)
693 /* initialize higher level parts of CPU like time base and timers */
696 #ifdef CONFIG_CMD_NAND
699 #ifdef CONFIG_CMD_ONENAND
708 #ifdef CONFIG_PVBLOCK
712 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
713 initr_malloc_bootparams,
715 INIT_FUNC_WATCHDOG_RESET
716 cpu_secondary_init_r,
717 #if defined(CONFIG_ID_EEPROM)
718 mac_read_from_eeprom,
720 INIT_FUNC_WATCHDOG_RESET
721 #if defined(CONFIG_PCI_INIT_R) && !defined(CONFIG_SYS_EARLY_PCI_INIT)
723 * Do pci configuration
732 console_init_r, /* fully init console as a device */
733 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
737 #ifdef CONFIG_ARCH_MISC_INIT
738 arch_misc_init, /* miscellaneous arch-dependent init */
740 #ifdef CONFIG_MISC_INIT_R
741 misc_init_r, /* miscellaneous platform-dependent init */
743 INIT_FUNC_WATCHDOG_RESET
744 #ifdef CONFIG_CMD_KGDB
748 #if defined(CONFIG_MICROBLAZE) || defined(CONFIG_M68K)
749 timer_init, /* initialize timer */
751 #if defined(CONFIG_LED_STATUS)
754 /* PPC has a udelay(20) here dating from 2002. Why? */
755 #ifdef CONFIG_CMD_NET
758 #if defined(CONFIG_GPIO_HOG)
761 #ifdef CONFIG_BOARD_LATE_INIT
764 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
765 INIT_FUNC_WATCHDOG_RESET
768 #ifdef CONFIG_BITBANGMII
771 #ifdef CONFIG_PCI_ENDPOINT
774 #ifdef CONFIG_CMD_NET
775 INIT_FUNC_WATCHDOG_RESET
781 #if defined(CONFIG_IDE) && !defined(CONFIG_BLK)
784 #ifdef CONFIG_LAST_STAGE_INIT
785 INIT_FUNC_WATCHDOG_RESET
787 * Some parts can be only initialized if all others (like
788 * Interrupts) are up and running (i.e. the PC-style ISA
793 #if defined(CONFIG_PRAM)
796 #ifdef CONFIG_EFI_SETUP_EARLY
802 void board_init_r(gd_t *new_gd, ulong dest_addr)
805 * Set up the new global data pointer. So far only x86 does this
807 * TODO(sjg@chromium.org): Consider doing this for all archs, or
808 * dropping the new_gd parameter.
810 if (CONFIG_IS_ENABLED(X86_64) && !IS_ENABLED(CONFIG_EFI_APP))
811 arch_setup_gd(new_gd);
813 #ifdef CONFIG_NEEDS_MANUAL_RELOC
817 #if !defined(CONFIG_X86) && !defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
820 gd->flags &= ~GD_FLG_LOG_READY;
822 #ifdef CONFIG_NEEDS_MANUAL_RELOC
823 for (i = 0; i < ARRAY_SIZE(init_sequence_r); i++)
824 init_sequence_r[i] += gd->reloc_off;
827 if (initcall_run_list(init_sequence_r))
830 /* NOTREACHED - run_main_loop() does not return */