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>
20 #include <u-boot/crc.h>
21 /* TODO: can we just include all these headers whether needed or not? */
22 #if defined(CONFIG_CMD_BEDBUG)
23 #include <bedbug/type.h>
30 #include <env_internal.h>
35 #if defined(CONFIG_CMD_KGDB)
41 #ifdef CONFIG_BITBANGMII
47 #include <onenand_uboot.h>
50 #include <status_led.h>
51 #include <stdio_dev.h>
55 #ifdef CONFIG_ADDR_MAP
58 #include <asm/sections.h>
60 #include <linux/compiler.h>
61 #include <linux/err.h>
62 #include <efi_loader.h>
64 #if defined(CONFIG_GPIO_HOG)
68 DECLARE_GLOBAL_DATA_PTR;
70 ulong monitor_flash_len;
72 __weak int board_flash_wp_on(void)
75 * Most flashes can't be detected when write protection is enabled,
76 * so provide a way to let U-Boot gracefully ignore write protected
82 __weak void cpu_secondary_init_r(void)
86 static int initr_secondary_cpu(void)
89 * after non-volatile devices & environment is setup and cpu code have
90 * another round to deal with any initialization that might require
91 * full access to the environment or loading of some image (firmware)
92 * from a non-volatile device
94 /* TODO: maybe define this for all archs? */
95 cpu_secondary_init_r();
100 static int initr_trace(void)
103 trace_init(gd->trace_buff, CONFIG_TRACE_BUFFER_SIZE);
109 static int initr_reloc(void)
111 /* tell others: relocation done */
112 gd->flags |= GD_FLG_RELOC | GD_FLG_FULL_MALLOC_INIT;
119 * Some of these functions are needed purely because the functions they
120 * call return void. If we change them to return 0, these stubs can go away.
122 static int initr_caches(void)
130 __weak int fixup_cpu(void)
135 static int initr_reloc_global_data(void)
138 monitor_flash_len = _end - __image_copy_start;
139 #elif defined(CONFIG_NDS32) || defined(CONFIG_RISCV)
140 monitor_flash_len = (ulong)&_end - (ulong)&_start;
141 #elif !defined(CONFIG_SANDBOX) && !defined(CONFIG_NIOS2)
142 monitor_flash_len = (ulong)&__init_end - gd->relocaddr;
144 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
146 * The gd->cpu pointer is set to an address in flash before relocation.
147 * We need to update it to point to the same CPU entry in RAM.
148 * TODO: why not just add gd->reloc_ofs?
150 gd->arch.cpu += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
153 * If we didn't know the cpu mask & # cores, we can save them of
154 * now rather than 'computing' them constantly
158 #ifdef CONFIG_SYS_RELOC_GD_ENV_ADDR
160 * Relocate the early env_addr pointer unless we know it is not inside
161 * the binary. Some systems need this and for the rest, it doesn't hurt.
163 gd->env_addr += gd->reloc_off;
165 #ifdef CONFIG_OF_EMBED
167 * The fdt_blob needs to be moved to new relocation address
168 * incase of FDT blob is embedded with in image
170 gd->fdt_blob += gd->reloc_off;
172 #ifdef CONFIG_EFI_LOADER
174 * On the ARM architecture gd is mapped to a fixed register (r9 or x18).
175 * As this register may be overwritten by an EFI payload we save it here
176 * and restore it on every callback entered.
180 efi_runtime_relocate(gd->relocaddr, NULL);
186 static int initr_serial(void)
192 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_MIPS)
193 static int initr_trap(void)
196 * Setup trap handlers
198 #if defined(CONFIG_PPC)
199 trap_init(gd->relocaddr);
201 trap_init(CONFIG_SYS_SDRAM_BASE);
207 #ifdef CONFIG_ADDR_MAP
208 static int initr_addr_map(void)
217 static int initr_post_backlog(void)
219 post_output_backlog();
224 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
225 static int initr_unlock_ram_in_cache(void)
227 unlock_ram_in_cache(); /* it's time to unlock D-cache in e500 */
233 static int initr_pci(void)
235 #ifndef CONFIG_DM_PCI
243 static int initr_barrier(void)
246 /* TODO: Can we not use dmb() macros for this? */
252 static int initr_malloc(void)
256 #if CONFIG_VAL(SYS_MALLOC_F_LEN)
257 debug("Pre-reloc malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr,
258 gd->malloc_ptr / 1024);
260 /* The malloc area is immediately below the monitor copy in DRAM */
262 * This value MUST match the value of gd->start_addr_sp in board_f.c:
263 * reserve_noncached().
265 malloc_start = gd->relocaddr - TOTAL_MALLOC_LEN;
266 mem_malloc_init((ulong)map_sysmem(malloc_start, TOTAL_MALLOC_LEN),
271 static int initr_console_record(void)
273 #if defined(CONFIG_CONSOLE_RECORD)
274 return console_record_init();
280 #ifdef CONFIG_SYS_NONCACHED_MEMORY
281 static int initr_noncached(void)
288 #ifdef CONFIG_OF_LIVE
289 static int initr_of_live(void)
293 bootstage_start(BOOTSTAGE_ID_ACCUM_OF_LIVE, "of_live");
294 ret = of_live_build(gd->fdt_blob, (struct device_node **)&gd->of_root);
295 bootstage_accum(BOOTSTAGE_ID_ACCUM_OF_LIVE);
304 static int initr_dm(void)
308 /* Save the pre-reloc driver model and start a new one */
309 gd->dm_root_f = gd->dm_root;
314 bootstage_start(BOOTSTATE_ID_ACCUM_DM_R, "dm_r");
315 ret = dm_init_and_scan(false);
316 bootstage_accum(BOOTSTATE_ID_ACCUM_DM_R);
324 static int initr_dm_devices(void)
328 if (IS_ENABLED(CONFIG_TIMER_EARLY)) {
329 ret = dm_timer_init();
337 static int initr_bootstage(void)
339 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
344 __weak int power_init_board(void)
349 static int initr_announce(void)
351 debug("Now running in RAM - U-Boot at: %08lx\n", gd->relocaddr);
355 #ifdef CONFIG_NEEDS_MANUAL_RELOC
356 static int initr_manual_reloc_cmdtable(void)
358 fixup_cmdtable(ll_entry_start(cmd_tbl_t, cmd),
359 ll_entry_count(cmd_tbl_t, cmd));
364 static int initr_binman(void)
366 if (!CONFIG_IS_ENABLED(BINMAN_FDT))
369 return binman_init();
372 #if defined(CONFIG_MTD_NOR_FLASH)
373 static int initr_flash(void)
375 ulong flash_size = 0;
380 if (board_flash_wp_on())
381 printf("Uninitialized - Write Protect On\n");
383 flash_size = flash_init();
385 print_size(flash_size, "");
386 #ifdef CONFIG_SYS_FLASH_CHECKSUM
388 * Compute and print flash CRC if flashchecksum is set to 'y'
390 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
392 if (env_get_yesno("flashchecksum") == 1) {
393 const uchar *flash_base = (const uchar *)CONFIG_SYS_FLASH_BASE;
395 printf(" CRC: %08X", crc32(0,
399 #endif /* CONFIG_SYS_FLASH_CHECKSUM */
402 /* update start of FLASH memory */
403 #ifdef CONFIG_SYS_FLASH_BASE
404 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
406 /* size of FLASH memory (final value) */
407 bd->bi_flashsize = flash_size;
409 #if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
410 /* Make a update of the Memctrl. */
411 update_flash_size(flash_size);
414 #if defined(CONFIG_OXC) || defined(CONFIG_RMU)
415 /* flash mapped at end of memory map */
416 bd->bi_flashoffset = CONFIG_SYS_TEXT_BASE + flash_size;
417 #elif CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
418 bd->bi_flashoffset = monitor_flash_len; /* reserved area for monitor */
424 #ifdef CONFIG_CMD_NAND
425 /* go init the NAND */
426 static int initr_nand(void)
430 printf("%lu MiB\n", nand_size() / 1024);
435 #if defined(CONFIG_CMD_ONENAND)
436 /* go init the NAND */
437 static int initr_onenand(void)
446 static int initr_mmc(void)
449 mmc_initialize(gd->bd);
455 * Tell if it's OK to load the environment early in boot.
457 * If CONFIG_OF_CONTROL is defined, we'll check with the FDT to see
458 * if this is OK (defaulting to saying it's OK).
460 * NOTE: Loading the environment early can be a bad idea if security is
461 * important, since no verification is done on the environment.
463 * @return 0 if environment should not be loaded, !=0 if it is ok to load
465 static int should_load_env(void)
467 #ifdef CONFIG_OF_CONTROL
468 return fdtdec_get_config_int(gd->fdt_blob, "load-environment", 1);
469 #elif defined CONFIG_DELAY_ENVIRONMENT
476 static int initr_env(void)
478 /* initialize environment */
479 if (should_load_env())
482 env_set_default(NULL, 0);
483 #ifdef CONFIG_OF_CONTROL
484 env_set_hex("fdtcontroladdr",
485 (unsigned long)map_to_sysmem(gd->fdt_blob));
488 /* Initialize from environment */
489 image_load_addr = env_get_ulong("loadaddr", 16, image_load_addr);
494 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
495 static int initr_malloc_bootparams(void)
497 gd->bd->bi_boot_params = (ulong)malloc(CONFIG_SYS_BOOTPARAMS_LEN);
498 if (!gd->bd->bi_boot_params) {
499 puts("WARNING: Cannot allocate space for boot parameters\n");
506 static int initr_jumptable(void)
512 #if defined(CONFIG_API)
513 static int initr_api(void)
521 /* enable exceptions */
523 static int initr_enable_interrupts(void)
530 #ifdef CONFIG_CMD_NET
531 static int initr_ethaddr(void)
535 /* kept around for legacy kernels only ... ignore the next section */
536 eth_env_get_enetaddr("ethaddr", bd->bi_enetaddr);
537 #ifdef CONFIG_HAS_ETH1
538 eth_env_get_enetaddr("eth1addr", bd->bi_enet1addr);
540 #ifdef CONFIG_HAS_ETH2
541 eth_env_get_enetaddr("eth2addr", bd->bi_enet2addr);
543 #ifdef CONFIG_HAS_ETH3
544 eth_env_get_enetaddr("eth3addr", bd->bi_enet3addr);
546 #ifdef CONFIG_HAS_ETH4
547 eth_env_get_enetaddr("eth4addr", bd->bi_enet4addr);
549 #ifdef CONFIG_HAS_ETH5
550 eth_env_get_enetaddr("eth5addr", bd->bi_enet5addr);
554 #endif /* CONFIG_CMD_NET */
556 #ifdef CONFIG_CMD_KGDB
557 static int initr_kgdb(void)
565 #if defined(CONFIG_LED_STATUS)
566 static int initr_status_led(void)
568 #if defined(CONFIG_LED_STATUS_BOOT)
569 status_led_set(CONFIG_LED_STATUS_BOOT, CONFIG_LED_STATUS_BLINKING);
577 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
578 static int initr_scsi(void)
588 #ifdef CONFIG_BITBANGMII
589 static int initr_bbmii(void)
596 #ifdef CONFIG_CMD_NET
597 static int initr_net(void)
601 #if defined(CONFIG_RESET_PHY_R)
602 debug("Reset Ethernet PHY\n");
610 static int initr_post(void)
612 post_run(NULL, POST_RAM | post_bootmode_get(0));
617 #if defined(CONFIG_IDE) && !defined(CONFIG_BLK)
618 static int initr_ide(void)
621 #if defined(CONFIG_START_IDE)
622 if (board_start_ide())
631 #if defined(CONFIG_PRAM)
633 * Export available size of memory for Linux, taking into account the
634 * protected RAM at top of memory
641 pram = env_get_ulong("pram", 10, CONFIG_PRAM);
642 sprintf(memsz, "%ldk", (long int)((gd->ram_size / 1024) - pram));
643 env_set("mem", memsz);
649 #ifdef CONFIG_CMD_BEDBUG
650 static int initr_bedbug(void)
658 static int run_main_loop(void)
660 #ifdef CONFIG_SANDBOX
661 sandbox_main_loop_init();
663 /* main_loop() can return to retry autoboot, if so just run it again */
670 * We hope to remove most of the driver-related init and do it if/when
671 * the driver is later used.
673 * TODO: perhaps reset the watchdog in the initcall function after each call?
675 static init_fnc_t init_sequence_r[] = {
678 /* TODO: could x86/PPC have this also perhaps? */
681 /* Note: For Freescale LS2 SoCs, new MMU table is created in DDR.
682 * A temporary mapping of IFC high region is since removed,
683 * so environmental variables in NOR flash is not available
684 * until board_init() is called below to remap IFC to high
688 initr_reloc_global_data,
689 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
690 initr_unlock_ram_in_cache,
695 initr_bootstage, /* Needs malloc() but has its own timer */
696 initr_console_record,
697 #ifdef CONFIG_SYS_NONCACHED_MEMORY
700 #ifdef CONFIG_OF_LIVE
706 #if defined(CONFIG_ARM) || defined(CONFIG_NDS32) || defined(CONFIG_RISCV) || \
707 defined(CONFIG_SANDBOX)
708 board_init, /* Setup chipselects */
711 * TODO: printing of the clock inforamtion of the board is now
712 * implemented as part of bdinfo command. Currently only support for
713 * davinci SOC's is added. Remove this check once all the board
717 set_cpu_clk_info, /* Setup clock information */
719 #ifdef CONFIG_EFI_LOADER
723 #ifdef CONFIG_FSP_VERSION2
730 #if CONFIG_IS_ENABLED(WDT)
733 INIT_FUNC_WATCHDOG_RESET
734 #ifdef CONFIG_NEEDS_MANUAL_RELOC
735 initr_manual_reloc_cmdtable,
737 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_MIPS)
740 #ifdef CONFIG_ADDR_MAP
743 #if defined(CONFIG_BOARD_EARLY_INIT_R)
746 INIT_FUNC_WATCHDOG_RESET
750 INIT_FUNC_WATCHDOG_RESET
751 #if defined(CONFIG_PCI) && defined(CONFIG_SYS_EARLY_PCI_INIT)
753 * Do early PCI configuration _before_ the flash gets initialised,
754 * because PCU resources are crucial for flash access on some boards.
758 #ifdef CONFIG_ARCH_EARLY_INIT_R
762 #ifdef CONFIG_MTD_NOR_FLASH
765 INIT_FUNC_WATCHDOG_RESET
766 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_X86)
767 /* initialize higher level parts of CPU like time base and timers */
770 #ifdef CONFIG_CMD_NAND
773 #ifdef CONFIG_CMD_ONENAND
780 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
781 initr_malloc_bootparams,
783 INIT_FUNC_WATCHDOG_RESET
785 #if defined(CONFIG_ID_EEPROM) || defined(CONFIG_SYS_I2C_MAC_OFFSET)
786 mac_read_from_eeprom,
788 INIT_FUNC_WATCHDOG_RESET
789 #if defined(CONFIG_PCI) && !defined(CONFIG_SYS_EARLY_PCI_INIT)
791 * Do pci configuration
800 console_init_r, /* fully init console as a device */
801 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
805 #ifdef CONFIG_ARCH_MISC_INIT
806 arch_misc_init, /* miscellaneous arch-dependent init */
808 #ifdef CONFIG_MISC_INIT_R
809 misc_init_r, /* miscellaneous platform-dependent init */
811 INIT_FUNC_WATCHDOG_RESET
812 #ifdef CONFIG_CMD_KGDB
817 initr_enable_interrupts,
819 #if defined(CONFIG_MICROBLAZE) || defined(CONFIG_M68K)
820 timer_init, /* initialize timer */
822 #if defined(CONFIG_LED_STATUS)
825 /* PPC has a udelay(20) here dating from 2002. Why? */
826 #ifdef CONFIG_CMD_NET
829 #if defined(CONFIG_GPIO_HOG)
832 #ifdef CONFIG_BOARD_LATE_INIT
835 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
836 INIT_FUNC_WATCHDOG_RESET
839 #ifdef CONFIG_BITBANGMII
842 #ifdef CONFIG_CMD_NET
843 INIT_FUNC_WATCHDOG_RESET
849 #if defined(CONFIG_IDE) && !defined(CONFIG_BLK)
852 #ifdef CONFIG_LAST_STAGE_INIT
853 INIT_FUNC_WATCHDOG_RESET
855 * Some parts can be only initialized if all others (like
856 * Interrupts) are up and running (i.e. the PC-style ISA
861 #ifdef CONFIG_CMD_BEDBUG
862 INIT_FUNC_WATCHDOG_RESET
865 #if defined(CONFIG_PRAM)
868 #if defined(CONFIG_M68K) && defined(CONFIG_BLOCK_CACHE)
874 void board_init_r(gd_t *new_gd, ulong dest_addr)
877 * Set up the new global data pointer. So far only x86 does this
879 * TODO(sjg@chromium.org): Consider doing this for all archs, or
880 * dropping the new_gd parameter.
882 #if CONFIG_IS_ENABLED(X86_64)
883 arch_setup_gd(new_gd);
886 #ifdef CONFIG_NEEDS_MANUAL_RELOC
890 #if !defined(CONFIG_X86) && !defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
893 gd->flags &= ~GD_FLG_LOG_READY;
895 #ifdef CONFIG_NEEDS_MANUAL_RELOC
896 for (i = 0; i < ARRAY_SIZE(init_sequence_r); i++)
897 init_sequence_r[i] += gd->reloc_off;
900 if (initcall_run_list(init_sequence_r))
903 /* NOTREACHED - run_main_loop() does not return */