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>
26 /* TODO: can we just include all these headers whether needed or not? */
27 #if defined(CONFIG_CMD_BEDBUG)
28 #include <bedbug/type.h>
35 #include <env_internal.h>
40 #if defined(CONFIG_CMD_KGDB)
46 #ifdef CONFIG_BITBANGMII
53 #include <onenand_uboot.h>
57 #include <status_led.h>
58 #include <stdio_dev.h>
65 #ifdef CONFIG_ADDR_MAP
68 #include <asm/sections.h>
70 #include <dm/ofnode.h>
71 #include <linux/compiler.h>
72 #include <linux/err.h>
73 #include <efi_loader.h>
75 #if defined(CONFIG_GPIO_HOG)
78 #ifdef CONFIG_EFI_SETUP_EARLY
79 #include <efi_loader.h>
82 DECLARE_GLOBAL_DATA_PTR;
84 ulong monitor_flash_len;
86 __weak int board_flash_wp_on(void)
89 * Most flashes can't be detected when write protection is enabled,
90 * so provide a way to let U-Boot gracefully ignore write protected
96 __weak int cpu_secondary_init_r(void)
101 static int initr_trace(void)
104 trace_init(gd->trace_buff, CONFIG_TRACE_BUFFER_SIZE);
110 static int initr_reloc(void)
112 /* tell others: relocation done */
113 gd->flags |= GD_FLG_RELOC | GD_FLG_FULL_MALLOC_INIT;
118 #if defined(CONFIG_ARM) || defined(CONFIG_RISCV)
120 * Some of these functions are needed purely because the functions they
121 * call return void. If we change them to return 0, these stubs can go away.
123 static int initr_caches(void)
131 __weak int fixup_cpu(void)
136 static int initr_reloc_global_data(void)
139 monitor_flash_len = _end - __image_copy_start;
140 #elif defined(CONFIG_NDS32) || defined(CONFIG_RISCV)
141 monitor_flash_len = (ulong)&_end - (ulong)&_start;
142 #elif !defined(CONFIG_SANDBOX) && !defined(CONFIG_NIOS2)
143 monitor_flash_len = (ulong)&__init_end - gd->relocaddr;
145 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
147 * The gd->cpu pointer is set to an address in flash before relocation.
148 * We need to update it to point to the same CPU entry in RAM.
149 * TODO: why not just add gd->reloc_ofs?
151 gd->arch.cpu += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
154 * If we didn't know the cpu mask & # cores, we can save them of
155 * now rather than 'computing' them constantly
159 #ifdef CONFIG_SYS_RELOC_GD_ENV_ADDR
161 * Relocate the early env_addr pointer unless we know it is not inside
162 * the binary. Some systems need this and for the rest, it doesn't hurt.
164 gd->env_addr += gd->reloc_off;
166 #ifdef CONFIG_OF_EMBED
168 * The fdt_blob needs to be moved to new relocation address
169 * incase of FDT blob is embedded with in image
171 gd->fdt_blob += gd->reloc_off;
173 #ifdef CONFIG_EFI_LOADER
175 * On the ARM architecture gd is mapped to a fixed register (r9 or x18).
176 * As this register may be overwritten by an EFI payload we save it here
177 * and restore it on every callback entered.
181 efi_runtime_relocate(gd->relocaddr, NULL);
187 __weak int arch_initr_trap(void)
192 #ifdef CONFIG_ADDR_MAP
193 static int initr_addr_map(void)
201 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
202 static int initr_unlock_ram_in_cache(void)
204 unlock_ram_in_cache(); /* it's time to unlock D-cache in e500 */
209 static int initr_barrier(void)
212 /* TODO: Can we not use dmb() macros for this? */
218 static int initr_malloc(void)
222 #if CONFIG_VAL(SYS_MALLOC_F_LEN)
223 debug("Pre-reloc malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr,
224 gd->malloc_ptr / 1024);
226 /* The malloc area is immediately below the monitor copy in DRAM */
228 * This value MUST match the value of gd->start_addr_sp in board_f.c:
229 * reserve_noncached().
231 malloc_start = gd->relocaddr - TOTAL_MALLOC_LEN;
232 mem_malloc_init((ulong)map_sysmem(malloc_start, TOTAL_MALLOC_LEN),
237 static int initr_of_live(void)
239 if (CONFIG_IS_ENABLED(OF_LIVE)) {
242 bootstage_start(BOOTSTAGE_ID_ACCUM_OF_LIVE, "of_live");
243 ret = of_live_build(gd->fdt_blob,
244 (struct device_node **)gd_of_root_ptr());
245 bootstage_accum(BOOTSTAGE_ID_ACCUM_OF_LIVE);
254 static int initr_dm(void)
258 /* Save the pre-reloc driver model and start a new one */
259 gd->dm_root_f = gd->dm_root;
264 bootstage_start(BOOTSTAGE_ID_ACCUM_DM_R, "dm_r");
265 ret = dm_init_and_scan(false);
266 bootstage_accum(BOOTSTAGE_ID_ACCUM_DM_R);
274 static int initr_dm_devices(void)
278 if (IS_ENABLED(CONFIG_TIMER_EARLY)) {
279 ret = dm_timer_init();
284 if (IS_ENABLED(CONFIG_MULTIPLEXER)) {
286 * Initialize the multiplexer controls to their default state.
287 * This must be done early as other drivers may unknowingly
298 static int initr_bootstage(void)
300 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
305 __weak int power_init_board(void)
310 static int initr_announce(void)
312 debug("Now running in RAM - U-Boot at: %08lx\n", gd->relocaddr);
316 #ifdef CONFIG_NEEDS_MANUAL_RELOC
317 static int initr_manual_reloc_cmdtable(void)
319 fixup_cmdtable(ll_entry_start(struct cmd_tbl, cmd),
320 ll_entry_count(struct cmd_tbl, cmd));
325 static int initr_binman(void)
329 if (!CONFIG_IS_ENABLED(BINMAN_FDT))
334 printf("binman_init failed:%d\n", ret);
339 #if defined(CONFIG_MTD_NOR_FLASH)
340 __weak int is_flash_available(void)
345 static int initr_flash(void)
347 ulong flash_size = 0;
348 struct bd_info *bd = gd->bd;
350 if (!is_flash_available())
355 if (board_flash_wp_on())
356 printf("Uninitialized - Write Protect On\n");
358 flash_size = flash_init();
360 print_size(flash_size, "");
361 #ifdef CONFIG_SYS_FLASH_CHECKSUM
363 * Compute and print flash CRC if flashchecksum is set to 'y'
365 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
367 if (env_get_yesno("flashchecksum") == 1) {
368 const uchar *flash_base = (const uchar *)CONFIG_SYS_FLASH_BASE;
370 printf(" CRC: %08X", crc32(0,
374 #endif /* CONFIG_SYS_FLASH_CHECKSUM */
377 /* update start of FLASH memory */
378 #ifdef CONFIG_SYS_FLASH_BASE
379 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
381 /* size of FLASH memory (final value) */
382 bd->bi_flashsize = flash_size;
384 #if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
385 /* Make a update of the Memctrl. */
386 update_flash_size(flash_size);
389 #if defined(CONFIG_OXC) || defined(CONFIG_RMU)
390 /* flash mapped at end of memory map */
391 bd->bi_flashoffset = CONFIG_SYS_TEXT_BASE + flash_size;
392 #elif CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
393 bd->bi_flashoffset = monitor_flash_len; /* reserved area for monitor */
399 #ifdef CONFIG_CMD_NAND
400 /* go init the NAND */
401 static int initr_nand(void)
405 printf("%lu MiB\n", nand_size() / 1024);
410 #if defined(CONFIG_CMD_ONENAND)
411 /* go init the NAND */
412 static int initr_onenand(void)
421 static int initr_mmc(void)
424 mmc_initialize(gd->bd);
429 #ifdef CONFIG_PVBLOCK
430 static int initr_pvblock(void)
439 * Tell if it's OK to load the environment early in boot.
441 * If CONFIG_OF_CONTROL is defined, we'll check with the FDT to see
442 * if this is OK (defaulting to saying it's OK).
444 * NOTE: Loading the environment early can be a bad idea if security is
445 * important, since no verification is done on the environment.
447 * @return 0 if environment should not be loaded, !=0 if it is ok to load
449 static int should_load_env(void)
451 if (IS_ENABLED(CONFIG_OF_CONTROL))
452 return ofnode_conf_read_int("load-environment", 1);
454 if (IS_ENABLED(CONFIG_DELAY_ENVIRONMENT))
460 static int initr_env(void)
462 /* initialize environment */
463 if (should_load_env())
466 env_set_default(NULL, 0);
470 if (IS_ENABLED(CONFIG_OF_CONTROL))
471 env_set_hex("fdtcontroladdr",
472 (unsigned long)map_to_sysmem(gd->fdt_blob));
474 /* Initialize from environment */
475 image_load_addr = env_get_ulong("loadaddr", 16, image_load_addr);
480 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
481 static int initr_malloc_bootparams(void)
483 gd->bd->bi_boot_params = (ulong)malloc(CONFIG_SYS_BOOTPARAMS_LEN);
484 if (!gd->bd->bi_boot_params) {
485 puts("WARNING: Cannot allocate space for boot parameters\n");
492 #ifdef CONFIG_CMD_NET
493 static int initr_ethaddr(void)
495 struct bd_info *bd = gd->bd;
497 /* kept around for legacy kernels only ... ignore the next section */
498 eth_env_get_enetaddr("ethaddr", bd->bi_enetaddr);
502 #endif /* CONFIG_CMD_NET */
504 #ifdef CONFIG_CMD_KGDB
505 static int initr_kgdb(void)
513 #if defined(CONFIG_LED_STATUS)
514 static int initr_status_led(void)
516 #if defined(CONFIG_LED_STATUS_BOOT)
517 status_led_set(CONFIG_LED_STATUS_BOOT, CONFIG_LED_STATUS_BLINKING);
525 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
526 static int initr_scsi(void)
536 #ifdef CONFIG_CMD_NET
537 static int initr_net(void)
541 #if defined(CONFIG_RESET_PHY_R)
542 debug("Reset Ethernet PHY\n");
550 static int initr_post(void)
552 post_run(NULL, POST_RAM | post_bootmode_get(0));
557 #if defined(CONFIG_IDE) && !defined(CONFIG_BLK)
558 static int initr_ide(void)
561 #if defined(CONFIG_START_IDE)
562 if (board_start_ide())
571 #if defined(CONFIG_PRAM)
573 * Export available size of memory for Linux, taking into account the
574 * protected RAM at top of memory
581 pram = env_get_ulong("pram", 10, CONFIG_PRAM);
582 sprintf(memsz, "%ldk", (long int)((gd->ram_size / 1024) - pram));
583 env_set("mem", memsz);
589 static int dm_announce(void)
594 if (IS_ENABLED(CONFIG_DM)) {
595 dm_get_stats(&device_count, &uclass_count);
596 printf("Core: %d devices, %d uclasses", device_count,
598 if (CONFIG_IS_ENABLED(OF_REAL))
599 printf(", devicetree: %s", fdtdec_get_srcname());
601 if (IS_ENABLED(CONFIG_OF_HAS_PRIOR_STAGE) &&
602 (gd->fdt_src == FDTSRC_SEPARATE ||
603 gd->fdt_src == FDTSRC_EMBED)) {
604 printf("Warning: Unexpected devicetree source (not from a prior stage)");
605 printf("Warning: U-Boot may not function properly\n");
612 static int run_main_loop(void)
614 #ifdef CONFIG_SANDBOX
615 sandbox_main_loop_init();
617 /* main_loop() can return to retry autoboot, if so just run it again */
624 * We hope to remove most of the driver-related init and do it if/when
625 * the driver is later used.
627 * TODO: perhaps reset the watchdog in the initcall function after each call?
629 static init_fnc_t init_sequence_r[] = {
632 /* TODO: could x86/PPC have this also perhaps? */
633 #if defined(CONFIG_ARM) || defined(CONFIG_RISCV)
635 /* Note: For Freescale LS2 SoCs, new MMU table is created in DDR.
636 * A temporary mapping of IFC high region is since removed,
637 * so environmental variables in NOR flash is not available
638 * until board_init() is called below to remap IFC to high
642 initr_reloc_global_data,
643 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
644 initr_unlock_ram_in_cache,
649 initr_bootstage, /* Needs malloc() but has its own timer */
650 #if defined(CONFIG_CONSOLE_RECORD)
653 #ifdef CONFIG_SYS_NONCACHED_MEMORY
660 #ifdef CONFIG_ADDR_MAP
663 #if defined(CONFIG_ARM) || defined(CONFIG_NDS32) || defined(CONFIG_RISCV) || \
664 defined(CONFIG_SANDBOX)
665 board_init, /* Setup chipselects */
668 * TODO: printing of the clock inforamtion of the board is now
669 * implemented as part of bdinfo command. Currently only support for
670 * davinci SOC's is added. Remove this check once all the board
674 set_cpu_clk_info, /* Setup clock information */
676 #ifdef CONFIG_EFI_LOADER
680 #ifdef CONFIG_FSP_VERSION2
688 #if CONFIG_IS_ENABLED(WDT)
691 INIT_FUNC_WATCHDOG_RESET
692 #if defined(CONFIG_NEEDS_MANUAL_RELOC) && defined(CONFIG_BLOCK_CACHE)
695 #ifdef CONFIG_NEEDS_MANUAL_RELOC
696 initr_manual_reloc_cmdtable,
699 #if defined(CONFIG_BOARD_EARLY_INIT_R)
702 INIT_FUNC_WATCHDOG_RESET
706 INIT_FUNC_WATCHDOG_RESET
707 #if defined(CONFIG_PCI_INIT_R) && defined(CONFIG_SYS_EARLY_PCI_INIT)
709 * Do early PCI configuration _before_ the flash gets initialised,
710 * because PCU resources are crucial for flash access on some boards.
714 #ifdef CONFIG_ARCH_EARLY_INIT_R
718 #ifdef CONFIG_MTD_NOR_FLASH
721 INIT_FUNC_WATCHDOG_RESET
722 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_X86)
723 /* initialize higher level parts of CPU like time base and timers */
726 #ifdef CONFIG_CMD_NAND
729 #ifdef CONFIG_CMD_ONENAND
738 #ifdef CONFIG_PVBLOCK
742 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
743 initr_malloc_bootparams,
745 INIT_FUNC_WATCHDOG_RESET
746 cpu_secondary_init_r,
747 #if defined(CONFIG_ID_EEPROM)
748 mac_read_from_eeprom,
750 INIT_FUNC_WATCHDOG_RESET
751 #if defined(CONFIG_PCI_INIT_R) && !defined(CONFIG_SYS_EARLY_PCI_INIT)
753 * Do pci configuration
762 console_init_r, /* fully init console as a device */
763 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
767 #ifdef CONFIG_ARCH_MISC_INIT
768 arch_misc_init, /* miscellaneous arch-dependent init */
770 #ifdef CONFIG_MISC_INIT_R
771 misc_init_r, /* miscellaneous platform-dependent init */
773 INIT_FUNC_WATCHDOG_RESET
774 #ifdef CONFIG_CMD_KGDB
778 #if defined(CONFIG_MICROBLAZE) || defined(CONFIG_M68K)
779 timer_init, /* initialize timer */
781 #if defined(CONFIG_LED_STATUS)
784 /* PPC has a udelay(20) here dating from 2002. Why? */
785 #ifdef CONFIG_CMD_NET
788 #if defined(CONFIG_GPIO_HOG)
791 #ifdef CONFIG_BOARD_LATE_INIT
794 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
795 INIT_FUNC_WATCHDOG_RESET
798 #ifdef CONFIG_BITBANGMII
801 #ifdef CONFIG_PCI_ENDPOINT
804 #ifdef CONFIG_CMD_NET
805 INIT_FUNC_WATCHDOG_RESET
811 #if defined(CONFIG_IDE) && !defined(CONFIG_BLK)
814 #ifdef CONFIG_LAST_STAGE_INIT
815 INIT_FUNC_WATCHDOG_RESET
817 * Some parts can be only initialized if all others (like
818 * Interrupts) are up and running (i.e. the PC-style ISA
823 #ifdef CONFIG_CMD_BEDBUG
824 INIT_FUNC_WATCHDOG_RESET
827 #if defined(CONFIG_PRAM)
830 #ifdef CONFIG_EFI_SETUP_EARLY
831 (init_fnc_t)efi_init_obj_list,
836 void board_init_r(gd_t *new_gd, ulong dest_addr)
839 * Set up the new global data pointer. So far only x86 does this
841 * TODO(sjg@chromium.org): Consider doing this for all archs, or
842 * dropping the new_gd parameter.
844 #if CONFIG_IS_ENABLED(X86_64)
845 arch_setup_gd(new_gd);
848 #ifdef CONFIG_NEEDS_MANUAL_RELOC
852 #if !defined(CONFIG_X86) && !defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
855 gd->flags &= ~GD_FLG_LOG_READY;
857 #ifdef CONFIG_NEEDS_MANUAL_RELOC
858 for (i = 0; i < ARRAY_SIZE(init_sequence_r); i++)
859 init_sequence_r[i] += gd->reloc_off;
862 if (initcall_run_list(init_sequence_r))
865 /* NOTREACHED - run_main_loop() does not return */