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>
18 #include <u-boot/crc.h>
19 /* TODO: can we just include all these headers whether needed or not? */
20 #if defined(CONFIG_CMD_BEDBUG)
21 #include <bedbug/type.h>
28 #include <env_internal.h>
33 #if defined(CONFIG_CMD_KGDB)
39 #ifdef CONFIG_BITBANGMII
45 #include <onenand_uboot.h>
48 #include <status_led.h>
49 #include <stdio_dev.h>
53 #ifdef CONFIG_ADDR_MAP
56 #include <asm/sections.h>
58 #include <linux/compiler.h>
59 #include <linux/err.h>
60 #include <efi_loader.h>
62 #if defined(CONFIG_GPIO_HOG)
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 void cpu_secondary_init_r(void)
84 static int initr_secondary_cpu(void)
87 * after non-volatile devices & environment is setup and cpu code have
88 * another round to deal with any initialization that might require
89 * full access to the environment or loading of some image (firmware)
90 * from a non-volatile device
92 /* TODO: maybe define this for all archs? */
93 cpu_secondary_init_r();
98 static int initr_trace(void)
101 trace_init(gd->trace_buff, CONFIG_TRACE_BUFFER_SIZE);
107 static int initr_reloc(void)
109 /* tell others: relocation done */
110 gd->flags |= GD_FLG_RELOC | GD_FLG_FULL_MALLOC_INIT;
117 * Some of these functions are needed purely because the functions they
118 * call return void. If we change them to return 0, these stubs can go away.
120 static int initr_caches(void)
128 __weak int fixup_cpu(void)
133 static int initr_reloc_global_data(void)
136 monitor_flash_len = _end - __image_copy_start;
137 #elif defined(CONFIG_NDS32) || defined(CONFIG_RISCV)
138 monitor_flash_len = (ulong)&_end - (ulong)&_start;
139 #elif !defined(CONFIG_SANDBOX) && !defined(CONFIG_NIOS2)
140 monitor_flash_len = (ulong)&__init_end - gd->relocaddr;
142 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
144 * The gd->cpu pointer is set to an address in flash before relocation.
145 * We need to update it to point to the same CPU entry in RAM.
146 * TODO: why not just add gd->reloc_ofs?
148 gd->arch.cpu += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
151 * If we didn't know the cpu mask & # cores, we can save them of
152 * now rather than 'computing' them constantly
156 #ifdef CONFIG_SYS_RELOC_GD_ENV_ADDR
158 * Relocate the early env_addr pointer unless we know it is not inside
159 * the binary. Some systems need this and for the rest, it doesn't hurt.
161 gd->env_addr += gd->reloc_off;
163 #ifdef CONFIG_OF_EMBED
165 * The fdt_blob needs to be moved to new relocation address
166 * incase of FDT blob is embedded with in image
168 gd->fdt_blob += gd->reloc_off;
170 #ifdef CONFIG_EFI_LOADER
172 * On the ARM architecture gd is mapped to a fixed register (r9 or x18).
173 * As this register may be overwritten by an EFI payload we save it here
174 * and restore it on every callback entered.
178 efi_runtime_relocate(gd->relocaddr, NULL);
184 static int initr_serial(void)
190 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_MIPS)
191 static int initr_trap(void)
194 * Setup trap handlers
196 #if defined(CONFIG_PPC)
197 trap_init(gd->relocaddr);
199 trap_init(CONFIG_SYS_SDRAM_BASE);
205 #ifdef CONFIG_ADDR_MAP
206 static int initr_addr_map(void)
215 static int initr_post_backlog(void)
217 post_output_backlog();
222 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
223 static int initr_unlock_ram_in_cache(void)
225 unlock_ram_in_cache(); /* it's time to unlock D-cache in e500 */
231 static int initr_pci(void)
233 #ifndef CONFIG_DM_PCI
241 static int initr_barrier(void)
244 /* TODO: Can we not use dmb() macros for this? */
250 static int initr_malloc(void)
254 #if CONFIG_VAL(SYS_MALLOC_F_LEN)
255 debug("Pre-reloc malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr,
256 gd->malloc_ptr / 1024);
258 /* The malloc area is immediately below the monitor copy in DRAM */
260 * This value MUST match the value of gd->start_addr_sp in board_f.c:
261 * reserve_noncached().
263 malloc_start = gd->relocaddr - TOTAL_MALLOC_LEN;
264 mem_malloc_init((ulong)map_sysmem(malloc_start, TOTAL_MALLOC_LEN),
269 static int initr_console_record(void)
271 #if defined(CONFIG_CONSOLE_RECORD)
272 return console_record_init();
278 #ifdef CONFIG_SYS_NONCACHED_MEMORY
279 static int initr_noncached(void)
286 #ifdef CONFIG_OF_LIVE
287 static int initr_of_live(void)
291 bootstage_start(BOOTSTAGE_ID_ACCUM_OF_LIVE, "of_live");
292 ret = of_live_build(gd->fdt_blob, (struct device_node **)&gd->of_root);
293 bootstage_accum(BOOTSTAGE_ID_ACCUM_OF_LIVE);
302 static int initr_dm(void)
306 /* Save the pre-reloc driver model and start a new one */
307 gd->dm_root_f = gd->dm_root;
312 bootstage_start(BOOTSTATE_ID_ACCUM_DM_R, "dm_r");
313 ret = dm_init_and_scan(false);
314 bootstage_accum(BOOTSTATE_ID_ACCUM_DM_R);
322 static int initr_dm_devices(void)
326 if (IS_ENABLED(CONFIG_TIMER_EARLY)) {
327 ret = dm_timer_init();
335 static int initr_bootstage(void)
337 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
342 __weak int power_init_board(void)
347 static int initr_announce(void)
349 debug("Now running in RAM - U-Boot at: %08lx\n", gd->relocaddr);
353 #ifdef CONFIG_NEEDS_MANUAL_RELOC
354 static int initr_manual_reloc_cmdtable(void)
356 fixup_cmdtable(ll_entry_start(cmd_tbl_t, cmd),
357 ll_entry_count(cmd_tbl_t, cmd));
362 static int initr_binman(void)
364 if (!CONFIG_IS_ENABLED(BINMAN_FDT))
367 return binman_init();
370 #if defined(CONFIG_MTD_NOR_FLASH)
371 static int initr_flash(void)
373 ulong flash_size = 0;
378 if (board_flash_wp_on())
379 printf("Uninitialized - Write Protect On\n");
381 flash_size = flash_init();
383 print_size(flash_size, "");
384 #ifdef CONFIG_SYS_FLASH_CHECKSUM
386 * Compute and print flash CRC if flashchecksum is set to 'y'
388 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
390 if (env_get_yesno("flashchecksum") == 1) {
391 const uchar *flash_base = (const uchar *)CONFIG_SYS_FLASH_BASE;
393 printf(" CRC: %08X", crc32(0,
397 #endif /* CONFIG_SYS_FLASH_CHECKSUM */
400 /* update start of FLASH memory */
401 #ifdef CONFIG_SYS_FLASH_BASE
402 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
404 /* size of FLASH memory (final value) */
405 bd->bi_flashsize = flash_size;
407 #if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
408 /* Make a update of the Memctrl. */
409 update_flash_size(flash_size);
412 #if defined(CONFIG_OXC) || defined(CONFIG_RMU)
413 /* flash mapped at end of memory map */
414 bd->bi_flashoffset = CONFIG_SYS_TEXT_BASE + flash_size;
415 #elif CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
416 bd->bi_flashoffset = monitor_flash_len; /* reserved area for monitor */
422 #ifdef CONFIG_CMD_NAND
423 /* go init the NAND */
424 static int initr_nand(void)
428 printf("%lu MiB\n", nand_size() / 1024);
433 #if defined(CONFIG_CMD_ONENAND)
434 /* go init the NAND */
435 static int initr_onenand(void)
444 static int initr_mmc(void)
447 mmc_initialize(gd->bd);
453 * Tell if it's OK to load the environment early in boot.
455 * If CONFIG_OF_CONTROL is defined, we'll check with the FDT to see
456 * if this is OK (defaulting to saying it's OK).
458 * NOTE: Loading the environment early can be a bad idea if security is
459 * important, since no verification is done on the environment.
461 * @return 0 if environment should not be loaded, !=0 if it is ok to load
463 static int should_load_env(void)
465 #ifdef CONFIG_OF_CONTROL
466 return fdtdec_get_config_int(gd->fdt_blob, "load-environment", 1);
467 #elif defined CONFIG_DELAY_ENVIRONMENT
474 static int initr_env(void)
476 /* initialize environment */
477 if (should_load_env())
480 env_set_default(NULL, 0);
481 #ifdef CONFIG_OF_CONTROL
482 env_set_hex("fdtcontroladdr",
483 (unsigned long)map_to_sysmem(gd->fdt_blob));
486 /* Initialize from environment */
487 image_load_addr = env_get_ulong("loadaddr", 16, image_load_addr);
492 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
493 static int initr_malloc_bootparams(void)
495 gd->bd->bi_boot_params = (ulong)malloc(CONFIG_SYS_BOOTPARAMS_LEN);
496 if (!gd->bd->bi_boot_params) {
497 puts("WARNING: Cannot allocate space for boot parameters\n");
504 static int initr_jumptable(void)
510 #if defined(CONFIG_API)
511 static int initr_api(void)
519 /* enable exceptions */
521 static int initr_enable_interrupts(void)
528 #ifdef CONFIG_CMD_NET
529 static int initr_ethaddr(void)
533 /* kept around for legacy kernels only ... ignore the next section */
534 eth_env_get_enetaddr("ethaddr", bd->bi_enetaddr);
535 #ifdef CONFIG_HAS_ETH1
536 eth_env_get_enetaddr("eth1addr", bd->bi_enet1addr);
538 #ifdef CONFIG_HAS_ETH2
539 eth_env_get_enetaddr("eth2addr", bd->bi_enet2addr);
541 #ifdef CONFIG_HAS_ETH3
542 eth_env_get_enetaddr("eth3addr", bd->bi_enet3addr);
544 #ifdef CONFIG_HAS_ETH4
545 eth_env_get_enetaddr("eth4addr", bd->bi_enet4addr);
547 #ifdef CONFIG_HAS_ETH5
548 eth_env_get_enetaddr("eth5addr", bd->bi_enet5addr);
552 #endif /* CONFIG_CMD_NET */
554 #ifdef CONFIG_CMD_KGDB
555 static int initr_kgdb(void)
563 #if defined(CONFIG_LED_STATUS)
564 static int initr_status_led(void)
566 #if defined(CONFIG_LED_STATUS_BOOT)
567 status_led_set(CONFIG_LED_STATUS_BOOT, CONFIG_LED_STATUS_BLINKING);
575 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
576 static int initr_scsi(void)
586 #ifdef CONFIG_BITBANGMII
587 static int initr_bbmii(void)
594 #ifdef CONFIG_CMD_NET
595 static int initr_net(void)
599 #if defined(CONFIG_RESET_PHY_R)
600 debug("Reset Ethernet PHY\n");
608 static int initr_post(void)
610 post_run(NULL, POST_RAM | post_bootmode_get(0));
615 #if defined(CONFIG_IDE) && !defined(CONFIG_BLK)
616 static int initr_ide(void)
619 #if defined(CONFIG_START_IDE)
620 if (board_start_ide())
629 #if defined(CONFIG_PRAM)
631 * Export available size of memory for Linux, taking into account the
632 * protected RAM at top of memory
639 pram = env_get_ulong("pram", 10, CONFIG_PRAM);
640 sprintf(memsz, "%ldk", (long int)((gd->ram_size / 1024) - pram));
641 env_set("mem", memsz);
647 #ifdef CONFIG_CMD_BEDBUG
648 static int initr_bedbug(void)
656 static int run_main_loop(void)
658 #ifdef CONFIG_SANDBOX
659 sandbox_main_loop_init();
661 /* main_loop() can return to retry autoboot, if so just run it again */
668 * We hope to remove most of the driver-related init and do it if/when
669 * the driver is later used.
671 * TODO: perhaps reset the watchdog in the initcall function after each call?
673 static init_fnc_t init_sequence_r[] = {
676 /* TODO: could x86/PPC have this also perhaps? */
679 /* Note: For Freescale LS2 SoCs, new MMU table is created in DDR.
680 * A temporary mapping of IFC high region is since removed,
681 * so environmental variables in NOR flash is not available
682 * until board_init() is called below to remap IFC to high
686 initr_reloc_global_data,
687 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
688 initr_unlock_ram_in_cache,
693 initr_bootstage, /* Needs malloc() but has its own timer */
694 initr_console_record,
695 #ifdef CONFIG_SYS_NONCACHED_MEMORY
698 #ifdef CONFIG_OF_LIVE
704 #if defined(CONFIG_ARM) || defined(CONFIG_NDS32) || defined(CONFIG_RISCV) || \
705 defined(CONFIG_SANDBOX)
706 board_init, /* Setup chipselects */
709 * TODO: printing of the clock inforamtion of the board is now
710 * implemented as part of bdinfo command. Currently only support for
711 * davinci SOC's is added. Remove this check once all the board
715 set_cpu_clk_info, /* Setup clock information */
717 #ifdef CONFIG_EFI_LOADER
721 #ifdef CONFIG_FSP_VERSION2
728 #if CONFIG_IS_ENABLED(WDT)
731 INIT_FUNC_WATCHDOG_RESET
732 #ifdef CONFIG_NEEDS_MANUAL_RELOC
733 initr_manual_reloc_cmdtable,
735 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_MIPS)
738 #ifdef CONFIG_ADDR_MAP
741 #if defined(CONFIG_BOARD_EARLY_INIT_R)
744 INIT_FUNC_WATCHDOG_RESET
748 INIT_FUNC_WATCHDOG_RESET
749 #if defined(CONFIG_PCI) && defined(CONFIG_SYS_EARLY_PCI_INIT)
751 * Do early PCI configuration _before_ the flash gets initialised,
752 * because PCU resources are crucial for flash access on some boards.
756 #ifdef CONFIG_ARCH_EARLY_INIT_R
760 #ifdef CONFIG_MTD_NOR_FLASH
763 INIT_FUNC_WATCHDOG_RESET
764 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_X86)
765 /* initialize higher level parts of CPU like time base and timers */
768 #ifdef CONFIG_CMD_NAND
771 #ifdef CONFIG_CMD_ONENAND
778 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
779 initr_malloc_bootparams,
781 INIT_FUNC_WATCHDOG_RESET
783 #if defined(CONFIG_ID_EEPROM) || defined(CONFIG_SYS_I2C_MAC_OFFSET)
784 mac_read_from_eeprom,
786 INIT_FUNC_WATCHDOG_RESET
787 #if defined(CONFIG_PCI) && !defined(CONFIG_SYS_EARLY_PCI_INIT)
789 * Do pci configuration
798 console_init_r, /* fully init console as a device */
799 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
803 #ifdef CONFIG_ARCH_MISC_INIT
804 arch_misc_init, /* miscellaneous arch-dependent init */
806 #ifdef CONFIG_MISC_INIT_R
807 misc_init_r, /* miscellaneous platform-dependent init */
809 INIT_FUNC_WATCHDOG_RESET
810 #ifdef CONFIG_CMD_KGDB
815 initr_enable_interrupts,
817 #if defined(CONFIG_MICROBLAZE) || defined(CONFIG_M68K)
818 timer_init, /* initialize timer */
820 #if defined(CONFIG_LED_STATUS)
823 /* PPC has a udelay(20) here dating from 2002. Why? */
824 #ifdef CONFIG_CMD_NET
827 #if defined(CONFIG_GPIO_HOG)
830 #ifdef CONFIG_BOARD_LATE_INIT
833 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
834 INIT_FUNC_WATCHDOG_RESET
837 #ifdef CONFIG_BITBANGMII
840 #ifdef CONFIG_CMD_NET
841 INIT_FUNC_WATCHDOG_RESET
847 #if defined(CONFIG_IDE) && !defined(CONFIG_BLK)
850 #ifdef CONFIG_LAST_STAGE_INIT
851 INIT_FUNC_WATCHDOG_RESET
853 * Some parts can be only initialized if all others (like
854 * Interrupts) are up and running (i.e. the PC-style ISA
859 #ifdef CONFIG_CMD_BEDBUG
860 INIT_FUNC_WATCHDOG_RESET
863 #if defined(CONFIG_PRAM)
869 void board_init_r(gd_t *new_gd, ulong dest_addr)
872 * Set up the new global data pointer. So far only x86 does this
874 * TODO(sjg@chromium.org): Consider doing this for all archs, or
875 * dropping the new_gd parameter.
877 #if CONFIG_IS_ENABLED(X86_64)
878 arch_setup_gd(new_gd);
881 #ifdef CONFIG_NEEDS_MANUAL_RELOC
885 #if !defined(CONFIG_X86) && !defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
888 gd->flags &= ~GD_FLG_LOG_READY;
890 #ifdef CONFIG_NEEDS_MANUAL_RELOC
891 for (i = 0; i < ARRAY_SIZE(init_sequence_r); i++)
892 init_sequence_r[i] += gd->reloc_off;
895 if (initcall_run_list(init_sequence_r))
898 /* NOTREACHED - run_main_loop() does not return */