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 <u-boot/crc.h>
25 /* TODO: can we just include all these headers whether needed or not? */
26 #if defined(CONFIG_CMD_BEDBUG)
27 #include <bedbug/type.h>
34 #include <env_internal.h>
39 #if defined(CONFIG_CMD_KGDB)
45 #ifdef CONFIG_BITBANGMII
51 #include <onenand_uboot.h>
54 #include <status_led.h>
55 #include <stdio_dev.h>
59 #ifdef CONFIG_ADDR_MAP
62 #include <asm/sections.h>
64 #include <linux/compiler.h>
65 #include <linux/err.h>
66 #include <efi_loader.h>
68 #if defined(CONFIG_GPIO_HOG)
72 DECLARE_GLOBAL_DATA_PTR;
74 ulong monitor_flash_len;
76 __weak int board_flash_wp_on(void)
79 * Most flashes can't be detected when write protection is enabled,
80 * so provide a way to let U-Boot gracefully ignore write protected
86 __weak void cpu_secondary_init_r(void)
90 static int initr_secondary_cpu(void)
93 * after non-volatile devices & environment is setup and cpu code have
94 * another round to deal with any initialization that might require
95 * full access to the environment or loading of some image (firmware)
96 * from a non-volatile device
98 /* TODO: maybe define this for all archs? */
99 cpu_secondary_init_r();
104 static int initr_trace(void)
107 trace_init(gd->trace_buff, CONFIG_TRACE_BUFFER_SIZE);
113 static int initr_reloc(void)
115 /* tell others: relocation done */
116 gd->flags |= GD_FLG_RELOC | GD_FLG_FULL_MALLOC_INIT;
123 * Some of these functions are needed purely because the functions they
124 * call return void. If we change them to return 0, these stubs can go away.
126 static int initr_caches(void)
134 __weak int fixup_cpu(void)
139 static int initr_reloc_global_data(void)
142 monitor_flash_len = _end - __image_copy_start;
143 #elif defined(CONFIG_NDS32) || defined(CONFIG_RISCV)
144 monitor_flash_len = (ulong)&_end - (ulong)&_start;
145 #elif !defined(CONFIG_SANDBOX) && !defined(CONFIG_NIOS2)
146 monitor_flash_len = (ulong)&__init_end - gd->relocaddr;
148 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
150 * The gd->cpu pointer is set to an address in flash before relocation.
151 * We need to update it to point to the same CPU entry in RAM.
152 * TODO: why not just add gd->reloc_ofs?
154 gd->arch.cpu += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
157 * If we didn't know the cpu mask & # cores, we can save them of
158 * now rather than 'computing' them constantly
162 #ifdef CONFIG_SYS_RELOC_GD_ENV_ADDR
164 * Relocate the early env_addr pointer unless we know it is not inside
165 * the binary. Some systems need this and for the rest, it doesn't hurt.
167 gd->env_addr += gd->reloc_off;
169 #ifdef CONFIG_OF_EMBED
171 * The fdt_blob needs to be moved to new relocation address
172 * incase of FDT blob is embedded with in image
174 gd->fdt_blob += gd->reloc_off;
176 #ifdef CONFIG_EFI_LOADER
178 * On the ARM architecture gd is mapped to a fixed register (r9 or x18).
179 * As this register may be overwritten by an EFI payload we save it here
180 * and restore it on every callback entered.
184 efi_runtime_relocate(gd->relocaddr, NULL);
190 static int initr_serial(void)
196 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_MIPS)
197 static int initr_trap(void)
200 * Setup trap handlers
202 #if defined(CONFIG_PPC)
203 trap_init(gd->relocaddr);
205 trap_init(CONFIG_SYS_SDRAM_BASE);
211 #ifdef CONFIG_ADDR_MAP
212 static int initr_addr_map(void)
221 static int initr_post_backlog(void)
223 post_output_backlog();
228 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
229 static int initr_unlock_ram_in_cache(void)
231 unlock_ram_in_cache(); /* it's time to unlock D-cache in e500 */
237 static int initr_pci(void)
239 if (IS_ENABLED(CONFIG_PCI_INIT_R))
246 static int initr_barrier(void)
249 /* TODO: Can we not use dmb() macros for this? */
255 static int initr_malloc(void)
259 #if CONFIG_VAL(SYS_MALLOC_F_LEN)
260 debug("Pre-reloc malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr,
261 gd->malloc_ptr / 1024);
263 /* The malloc area is immediately below the monitor copy in DRAM */
265 * This value MUST match the value of gd->start_addr_sp in board_f.c:
266 * reserve_noncached().
268 malloc_start = gd->relocaddr - TOTAL_MALLOC_LEN;
269 mem_malloc_init((ulong)map_sysmem(malloc_start, TOTAL_MALLOC_LEN),
274 static int initr_console_record(void)
276 #if defined(CONFIG_CONSOLE_RECORD)
277 return console_record_init();
283 #ifdef CONFIG_SYS_NONCACHED_MEMORY
284 static int initr_noncached(void)
291 #ifdef CONFIG_OF_LIVE
292 static int initr_of_live(void)
296 bootstage_start(BOOTSTAGE_ID_ACCUM_OF_LIVE, "of_live");
297 ret = of_live_build(gd->fdt_blob, (struct device_node **)&gd->of_root);
298 bootstage_accum(BOOTSTAGE_ID_ACCUM_OF_LIVE);
307 static int initr_dm(void)
311 /* Save the pre-reloc driver model and start a new one */
312 gd->dm_root_f = gd->dm_root;
317 bootstage_start(BOOTSTAGE_ID_ACCUM_DM_R, "dm_r");
318 ret = dm_init_and_scan(false);
319 bootstage_accum(BOOTSTAGE_ID_ACCUM_DM_R);
327 static int initr_dm_devices(void)
331 if (IS_ENABLED(CONFIG_TIMER_EARLY)) {
332 ret = dm_timer_init();
340 static int initr_bootstage(void)
342 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
347 __weak int power_init_board(void)
352 static int initr_announce(void)
354 debug("Now running in RAM - U-Boot at: %08lx\n", gd->relocaddr);
358 #ifdef CONFIG_NEEDS_MANUAL_RELOC
359 static int initr_manual_reloc_cmdtable(void)
361 fixup_cmdtable(ll_entry_start(struct cmd_tbl, cmd),
362 ll_entry_count(struct cmd_tbl, cmd));
367 static int initr_binman(void)
369 if (!CONFIG_IS_ENABLED(BINMAN_FDT))
372 return binman_init();
375 #if defined(CONFIG_MTD_NOR_FLASH)
376 __weak int is_flash_available(void)
381 static int initr_flash(void)
383 ulong flash_size = 0;
386 if (!is_flash_available())
391 if (board_flash_wp_on())
392 printf("Uninitialized - Write Protect On\n");
394 flash_size = flash_init();
396 print_size(flash_size, "");
397 #ifdef CONFIG_SYS_FLASH_CHECKSUM
399 * Compute and print flash CRC if flashchecksum is set to 'y'
401 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
403 if (env_get_yesno("flashchecksum") == 1) {
404 const uchar *flash_base = (const uchar *)CONFIG_SYS_FLASH_BASE;
406 printf(" CRC: %08X", crc32(0,
410 #endif /* CONFIG_SYS_FLASH_CHECKSUM */
413 /* update start of FLASH memory */
414 #ifdef CONFIG_SYS_FLASH_BASE
415 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
417 /* size of FLASH memory (final value) */
418 bd->bi_flashsize = flash_size;
420 #if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
421 /* Make a update of the Memctrl. */
422 update_flash_size(flash_size);
425 #if defined(CONFIG_OXC) || defined(CONFIG_RMU)
426 /* flash mapped at end of memory map */
427 bd->bi_flashoffset = CONFIG_SYS_TEXT_BASE + flash_size;
428 #elif CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
429 bd->bi_flashoffset = monitor_flash_len; /* reserved area for monitor */
435 #ifdef CONFIG_CMD_NAND
436 /* go init the NAND */
437 static int initr_nand(void)
441 printf("%lu MiB\n", nand_size() / 1024);
446 #if defined(CONFIG_CMD_ONENAND)
447 /* go init the NAND */
448 static int initr_onenand(void)
457 static int initr_mmc(void)
460 mmc_initialize(gd->bd);
466 * Tell if it's OK to load the environment early in boot.
468 * If CONFIG_OF_CONTROL is defined, we'll check with the FDT to see
469 * if this is OK (defaulting to saying it's OK).
471 * NOTE: Loading the environment early can be a bad idea if security is
472 * important, since no verification is done on the environment.
474 * @return 0 if environment should not be loaded, !=0 if it is ok to load
476 static int should_load_env(void)
478 if (IS_ENABLED(CONFIG_OF_CONTROL))
479 return fdtdec_get_config_int(gd->fdt_blob,
480 "load-environment", 1);
482 if (IS_ENABLED(CONFIG_DELAY_ENVIRONMENT))
488 static int initr_env(void)
490 /* initialize environment */
491 if (should_load_env())
494 env_set_default(NULL, 0);
496 if (IS_ENABLED(CONFIG_OF_CONTROL))
497 env_set_hex("fdtcontroladdr",
498 (unsigned long)map_to_sysmem(gd->fdt_blob));
500 /* Initialize from environment */
501 image_load_addr = env_get_ulong("loadaddr", 16, image_load_addr);
506 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
507 static int initr_malloc_bootparams(void)
509 gd->bd->bi_boot_params = (ulong)malloc(CONFIG_SYS_BOOTPARAMS_LEN);
510 if (!gd->bd->bi_boot_params) {
511 puts("WARNING: Cannot allocate space for boot parameters\n");
518 static int initr_jumptable(void)
524 #if defined(CONFIG_API)
525 static int initr_api(void)
533 #ifdef CONFIG_CMD_NET
534 static int initr_ethaddr(void)
538 /* kept around for legacy kernels only ... ignore the next section */
539 eth_env_get_enetaddr("ethaddr", bd->bi_enetaddr);
543 #endif /* CONFIG_CMD_NET */
545 #ifdef CONFIG_CMD_KGDB
546 static int initr_kgdb(void)
554 #if defined(CONFIG_LED_STATUS)
555 static int initr_status_led(void)
557 #if defined(CONFIG_LED_STATUS_BOOT)
558 status_led_set(CONFIG_LED_STATUS_BOOT, CONFIG_LED_STATUS_BLINKING);
566 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
567 static int initr_scsi(void)
577 #ifdef CONFIG_BITBANGMII
578 static int initr_bbmii(void)
585 #ifdef CONFIG_CMD_NET
586 static int initr_net(void)
590 #if defined(CONFIG_RESET_PHY_R)
591 debug("Reset Ethernet PHY\n");
599 static int initr_post(void)
601 post_run(NULL, POST_RAM | post_bootmode_get(0));
606 #if defined(CONFIG_IDE) && !defined(CONFIG_BLK)
607 static int initr_ide(void)
610 #if defined(CONFIG_START_IDE)
611 if (board_start_ide())
620 #if defined(CONFIG_PRAM)
622 * Export available size of memory for Linux, taking into account the
623 * protected RAM at top of memory
630 pram = env_get_ulong("pram", 10, CONFIG_PRAM);
631 sprintf(memsz, "%ldk", (long int)((gd->ram_size / 1024) - pram));
632 env_set("mem", memsz);
638 static int run_main_loop(void)
640 #ifdef CONFIG_SANDBOX
641 sandbox_main_loop_init();
643 /* main_loop() can return to retry autoboot, if so just run it again */
650 * We hope to remove most of the driver-related init and do it if/when
651 * the driver is later used.
653 * TODO: perhaps reset the watchdog in the initcall function after each call?
655 static init_fnc_t init_sequence_r[] = {
658 /* TODO: could x86/PPC have this also perhaps? */
661 /* Note: For Freescale LS2 SoCs, new MMU table is created in DDR.
662 * A temporary mapping of IFC high region is since removed,
663 * so environmental variables in NOR flash is not available
664 * until board_init() is called below to remap IFC to high
668 initr_reloc_global_data,
669 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
670 initr_unlock_ram_in_cache,
675 initr_bootstage, /* Needs malloc() but has its own timer */
676 initr_console_record,
677 #ifdef CONFIG_SYS_NONCACHED_MEMORY
680 #ifdef CONFIG_OF_LIVE
686 #if defined(CONFIG_ARM) || defined(CONFIG_NDS32) || defined(CONFIG_RISCV) || \
687 defined(CONFIG_SANDBOX)
688 board_init, /* Setup chipselects */
691 * TODO: printing of the clock inforamtion of the board is now
692 * implemented as part of bdinfo command. Currently only support for
693 * davinci SOC's is added. Remove this check once all the board
697 set_cpu_clk_info, /* Setup clock information */
699 #ifdef CONFIG_EFI_LOADER
703 #ifdef CONFIG_FSP_VERSION2
710 #if CONFIG_IS_ENABLED(WDT)
713 INIT_FUNC_WATCHDOG_RESET
714 #ifdef CONFIG_NEEDS_MANUAL_RELOC
715 initr_manual_reloc_cmdtable,
717 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_MIPS)
720 #ifdef CONFIG_ADDR_MAP
723 #if defined(CONFIG_BOARD_EARLY_INIT_R)
726 INIT_FUNC_WATCHDOG_RESET
730 INIT_FUNC_WATCHDOG_RESET
731 #if defined(CONFIG_PCI) && defined(CONFIG_SYS_EARLY_PCI_INIT)
733 * Do early PCI configuration _before_ the flash gets initialised,
734 * because PCU resources are crucial for flash access on some boards.
738 #ifdef CONFIG_ARCH_EARLY_INIT_R
742 #ifdef CONFIG_MTD_NOR_FLASH
745 INIT_FUNC_WATCHDOG_RESET
746 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_X86)
747 /* initialize higher level parts of CPU like time base and timers */
750 #ifdef CONFIG_CMD_NAND
753 #ifdef CONFIG_CMD_ONENAND
760 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
761 initr_malloc_bootparams,
763 INIT_FUNC_WATCHDOG_RESET
765 #if defined(CONFIG_ID_EEPROM) || defined(CONFIG_SYS_I2C_MAC_OFFSET)
766 mac_read_from_eeprom,
768 INIT_FUNC_WATCHDOG_RESET
769 #if defined(CONFIG_PCI) && !defined(CONFIG_SYS_EARLY_PCI_INIT)
771 * Do pci configuration
780 console_init_r, /* fully init console as a device */
781 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
785 #ifdef CONFIG_ARCH_MISC_INIT
786 arch_misc_init, /* miscellaneous arch-dependent init */
788 #ifdef CONFIG_MISC_INIT_R
789 misc_init_r, /* miscellaneous platform-dependent init */
791 INIT_FUNC_WATCHDOG_RESET
792 #ifdef CONFIG_CMD_KGDB
796 #if defined(CONFIG_MICROBLAZE) || defined(CONFIG_M68K)
797 timer_init, /* initialize timer */
799 #if defined(CONFIG_LED_STATUS)
802 /* PPC has a udelay(20) here dating from 2002. Why? */
803 #ifdef CONFIG_CMD_NET
806 #if defined(CONFIG_GPIO_HOG)
809 #ifdef CONFIG_BOARD_LATE_INIT
812 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
813 INIT_FUNC_WATCHDOG_RESET
816 #ifdef CONFIG_BITBANGMII
819 #ifdef CONFIG_CMD_NET
820 INIT_FUNC_WATCHDOG_RESET
826 #if defined(CONFIG_IDE) && !defined(CONFIG_BLK)
829 #ifdef CONFIG_LAST_STAGE_INIT
830 INIT_FUNC_WATCHDOG_RESET
832 * Some parts can be only initialized if all others (like
833 * Interrupts) are up and running (i.e. the PC-style ISA
838 #ifdef CONFIG_CMD_BEDBUG
839 INIT_FUNC_WATCHDOG_RESET
842 #if defined(CONFIG_PRAM)
845 #if defined(CONFIG_M68K) && defined(CONFIG_BLOCK_CACHE)
851 void board_init_r(gd_t *new_gd, ulong dest_addr)
854 * Set up the new global data pointer. So far only x86 does this
856 * TODO(sjg@chromium.org): Consider doing this for all archs, or
857 * dropping the new_gd parameter.
859 #if CONFIG_IS_ENABLED(X86_64)
860 arch_setup_gd(new_gd);
863 #ifdef CONFIG_NEEDS_MANUAL_RELOC
867 #if !defined(CONFIG_X86) && !defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
870 gd->flags &= ~GD_FLG_LOG_READY;
872 #ifdef CONFIG_NEEDS_MANUAL_RELOC
873 for (i = 0; i < ARRAY_SIZE(init_sequence_r); i++)
874 init_sequence_r[i] += gd->reloc_off;
877 if (initcall_run_list(init_sequence_r))
880 /* NOTREACHED - run_main_loop() does not return */