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 /* TODO: can we just include all these headers whether needed or not? */
15 #if defined(CONFIG_CMD_BEDBUG)
16 #include <bedbug/type.h>
22 #include <env_internal.h>
26 #if defined(CONFIG_CMD_KGDB)
31 #ifdef CONFIG_BITBANGMII
37 #include <onenand_uboot.h>
40 #include <stdio_dev.h>
44 #ifdef CONFIG_ADDR_MAP
47 #include <asm/sections.h>
49 #include <linux/compiler.h>
50 #include <linux/err.h>
51 #include <efi_loader.h>
53 #if defined(CONFIG_GPIO_HOG)
57 DECLARE_GLOBAL_DATA_PTR;
59 ulong monitor_flash_len;
61 __weak int board_flash_wp_on(void)
64 * Most flashes can't be detected when write protection is enabled,
65 * so provide a way to let U-Boot gracefully ignore write protected
71 __weak void cpu_secondary_init_r(void)
75 static int initr_secondary_cpu(void)
78 * after non-volatile devices & environment is setup and cpu code have
79 * another round to deal with any initialization that might require
80 * full access to the environment or loading of some image (firmware)
81 * from a non-volatile device
83 /* TODO: maybe define this for all archs? */
84 cpu_secondary_init_r();
89 static int initr_trace(void)
92 trace_init(gd->trace_buff, CONFIG_TRACE_BUFFER_SIZE);
98 static int initr_reloc(void)
100 /* tell others: relocation done */
101 gd->flags |= GD_FLG_RELOC | GD_FLG_FULL_MALLOC_INIT;
108 * Some of these functions are needed purely because the functions they
109 * call return void. If we change them to return 0, these stubs can go away.
111 static int initr_caches(void)
119 __weak int fixup_cpu(void)
124 static int initr_reloc_global_data(void)
127 monitor_flash_len = _end - __image_copy_start;
128 #elif defined(CONFIG_NDS32) || defined(CONFIG_RISCV)
129 monitor_flash_len = (ulong)&_end - (ulong)&_start;
130 #elif !defined(CONFIG_SANDBOX) && !defined(CONFIG_NIOS2)
131 monitor_flash_len = (ulong)&__init_end - gd->relocaddr;
133 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
135 * The gd->cpu pointer is set to an address in flash before relocation.
136 * We need to update it to point to the same CPU entry in RAM.
137 * TODO: why not just add gd->reloc_ofs?
139 gd->arch.cpu += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
142 * If we didn't know the cpu mask & # cores, we can save them of
143 * now rather than 'computing' them constantly
147 #if !defined(CONFIG_ENV_ADDR) || defined(ENV_IS_EMBEDDED)
149 * Relocate the early env_addr pointer unless we know it is not inside
150 * the binary. Some systems need this and for the rest, it doesn't hurt.
152 gd->env_addr += gd->reloc_off;
154 #ifdef CONFIG_OF_EMBED
156 * The fdt_blob needs to be moved to new relocation address
157 * incase of FDT blob is embedded with in image
159 gd->fdt_blob += gd->reloc_off;
161 #ifdef CONFIG_EFI_LOADER
163 * On the ARM architecture gd is mapped to a fixed register (r9 or x18).
164 * As this register may be overwritten by an EFI payload we save it here
165 * and restore it on every callback entered.
169 efi_runtime_relocate(gd->relocaddr, NULL);
175 static int initr_serial(void)
181 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_MIPS)
182 static int initr_trap(void)
185 * Setup trap handlers
187 #if defined(CONFIG_PPC)
188 trap_init(gd->relocaddr);
190 trap_init(CONFIG_SYS_SDRAM_BASE);
196 #ifdef CONFIG_ADDR_MAP
197 static int initr_addr_map(void)
206 static int initr_post_backlog(void)
208 post_output_backlog();
213 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
214 static int initr_unlock_ram_in_cache(void)
216 unlock_ram_in_cache(); /* it's time to unlock D-cache in e500 */
222 static int initr_pci(void)
224 #ifndef CONFIG_DM_PCI
232 static int initr_barrier(void)
235 /* TODO: Can we not use dmb() macros for this? */
241 static int initr_malloc(void)
245 #if CONFIG_VAL(SYS_MALLOC_F_LEN)
246 debug("Pre-reloc malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr,
247 gd->malloc_ptr / 1024);
249 /* The malloc area is immediately below the monitor copy in DRAM */
250 malloc_start = gd->relocaddr - TOTAL_MALLOC_LEN;
251 mem_malloc_init((ulong)map_sysmem(malloc_start, TOTAL_MALLOC_LEN),
256 static int initr_console_record(void)
258 #if defined(CONFIG_CONSOLE_RECORD)
259 return console_record_init();
265 #ifdef CONFIG_SYS_NONCACHED_MEMORY
266 static int initr_noncached(void)
273 #ifdef CONFIG_OF_LIVE
274 static int initr_of_live(void)
278 bootstage_start(BOOTSTAGE_ID_ACCUM_OF_LIVE, "of_live");
279 ret = of_live_build(gd->fdt_blob, (struct device_node **)&gd->of_root);
280 bootstage_accum(BOOTSTAGE_ID_ACCUM_OF_LIVE);
289 static int initr_dm(void)
293 /* Save the pre-reloc driver model and start a new one */
294 gd->dm_root_f = gd->dm_root;
299 bootstage_start(BOOTSTATE_ID_ACCUM_DM_R, "dm_r");
300 ret = dm_init_and_scan(false);
301 bootstage_accum(BOOTSTATE_ID_ACCUM_DM_R);
304 #ifdef CONFIG_TIMER_EARLY
305 ret = dm_timer_init();
314 static int initr_bootstage(void)
316 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
321 __weak int power_init_board(void)
326 static int initr_announce(void)
328 debug("Now running in RAM - U-Boot at: %08lx\n", gd->relocaddr);
332 #ifdef CONFIG_NEEDS_MANUAL_RELOC
333 static int initr_manual_reloc_cmdtable(void)
335 fixup_cmdtable(ll_entry_start(cmd_tbl_t, cmd),
336 ll_entry_count(cmd_tbl_t, cmd));
341 #if defined(CONFIG_MTD_NOR_FLASH)
342 static int initr_flash(void)
344 ulong flash_size = 0;
349 if (board_flash_wp_on())
350 printf("Uninitialized - Write Protect On\n");
352 flash_size = flash_init();
354 print_size(flash_size, "");
355 #ifdef CONFIG_SYS_FLASH_CHECKSUM
357 * Compute and print flash CRC if flashchecksum is set to 'y'
359 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
361 if (env_get_yesno("flashchecksum") == 1) {
362 const uchar *flash_base = (const uchar *)CONFIG_SYS_FLASH_BASE;
364 printf(" CRC: %08X", crc32(0,
368 #endif /* CONFIG_SYS_FLASH_CHECKSUM */
371 /* update start of FLASH memory */
372 #ifdef CONFIG_SYS_FLASH_BASE
373 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
375 /* size of FLASH memory (final value) */
376 bd->bi_flashsize = flash_size;
378 #if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
379 /* Make a update of the Memctrl. */
380 update_flash_size(flash_size);
383 #if defined(CONFIG_OXC) || defined(CONFIG_RMU)
384 /* flash mapped at end of memory map */
385 bd->bi_flashoffset = CONFIG_SYS_TEXT_BASE + flash_size;
386 #elif CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
387 bd->bi_flashoffset = monitor_flash_len; /* reserved area for monitor */
393 #ifdef CONFIG_CMD_NAND
394 /* go init the NAND */
395 static int initr_nand(void)
399 printf("%lu MiB\n", nand_size() / 1024);
404 #if defined(CONFIG_CMD_ONENAND)
405 /* go init the NAND */
406 static int initr_onenand(void)
415 static int initr_mmc(void)
418 mmc_initialize(gd->bd);
424 * Tell if it's OK to load the environment early in boot.
426 * If CONFIG_OF_CONTROL is defined, we'll check with the FDT to see
427 * if this is OK (defaulting to saying it's OK).
429 * NOTE: Loading the environment early can be a bad idea if security is
430 * important, since no verification is done on the environment.
432 * @return 0 if environment should not be loaded, !=0 if it is ok to load
434 static int should_load_env(void)
436 #ifdef CONFIG_OF_CONTROL
437 return fdtdec_get_config_int(gd->fdt_blob, "load-environment", 1);
438 #elif defined CONFIG_DELAY_ENVIRONMENT
445 static int initr_env(void)
447 /* initialize environment */
448 if (should_load_env())
451 env_set_default(NULL, 0);
452 #ifdef CONFIG_OF_CONTROL
453 env_set_hex("fdtcontroladdr",
454 (unsigned long)map_to_sysmem(gd->fdt_blob));
457 /* Initialize from environment */
458 load_addr = env_get_ulong("loadaddr", 16, load_addr);
463 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
464 static int initr_malloc_bootparams(void)
466 gd->bd->bi_boot_params = (ulong)malloc(CONFIG_SYS_BOOTPARAMS_LEN);
467 if (!gd->bd->bi_boot_params) {
468 puts("WARNING: Cannot allocate space for boot parameters\n");
475 static int initr_jumptable(void)
481 #if defined(CONFIG_API)
482 static int initr_api(void)
490 /* enable exceptions */
492 static int initr_enable_interrupts(void)
499 #ifdef CONFIG_CMD_NET
500 static int initr_ethaddr(void)
504 /* kept around for legacy kernels only ... ignore the next section */
505 eth_env_get_enetaddr("ethaddr", bd->bi_enetaddr);
506 #ifdef CONFIG_HAS_ETH1
507 eth_env_get_enetaddr("eth1addr", bd->bi_enet1addr);
509 #ifdef CONFIG_HAS_ETH2
510 eth_env_get_enetaddr("eth2addr", bd->bi_enet2addr);
512 #ifdef CONFIG_HAS_ETH3
513 eth_env_get_enetaddr("eth3addr", bd->bi_enet3addr);
515 #ifdef CONFIG_HAS_ETH4
516 eth_env_get_enetaddr("eth4addr", bd->bi_enet4addr);
518 #ifdef CONFIG_HAS_ETH5
519 eth_env_get_enetaddr("eth5addr", bd->bi_enet5addr);
523 #endif /* CONFIG_CMD_NET */
525 #ifdef CONFIG_CMD_KGDB
526 static int initr_kgdb(void)
534 #if defined(CONFIG_LED_STATUS)
535 static int initr_status_led(void)
537 #if defined(CONFIG_LED_STATUS_BOOT)
538 status_led_set(CONFIG_LED_STATUS_BOOT, CONFIG_LED_STATUS_BLINKING);
546 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
547 static int initr_scsi(void)
557 #ifdef CONFIG_BITBANGMII
558 static int initr_bbmii(void)
565 #ifdef CONFIG_CMD_NET
566 static int initr_net(void)
570 #if defined(CONFIG_RESET_PHY_R)
571 debug("Reset Ethernet PHY\n");
579 static int initr_post(void)
581 post_run(NULL, POST_RAM | post_bootmode_get(0));
586 #if defined(CONFIG_IDE) && !defined(CONFIG_BLK)
587 static int initr_ide(void)
590 #if defined(CONFIG_START_IDE)
591 if (board_start_ide())
600 #if defined(CONFIG_PRAM)
602 * Export available size of memory for Linux, taking into account the
603 * protected RAM at top of memory
610 pram = env_get_ulong("pram", 10, CONFIG_PRAM);
611 sprintf(memsz, "%ldk", (long int)((gd->ram_size / 1024) - pram));
612 env_set("mem", memsz);
618 #ifdef CONFIG_CMD_BEDBUG
619 static int initr_bedbug(void)
627 static int run_main_loop(void)
629 #ifdef CONFIG_SANDBOX
630 sandbox_main_loop_init();
632 /* main_loop() can return to retry autoboot, if so just run it again */
639 * We hope to remove most of the driver-related init and do it if/when
640 * the driver is later used.
642 * TODO: perhaps reset the watchdog in the initcall function after each call?
644 static init_fnc_t init_sequence_r[] = {
647 /* TODO: could x86/PPC have this also perhaps? */
650 /* Note: For Freescale LS2 SoCs, new MMU table is created in DDR.
651 * A temporary mapping of IFC high region is since removed,
652 * so environmental variables in NOR flash is not available
653 * until board_init() is called below to remap IFC to high
657 initr_reloc_global_data,
658 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
659 initr_unlock_ram_in_cache,
664 initr_bootstage, /* Needs malloc() but has its own timer */
665 initr_console_record,
666 #ifdef CONFIG_SYS_NONCACHED_MEMORY
670 #ifdef CONFIG_OF_LIVE
676 #if defined(CONFIG_ARM) || defined(CONFIG_NDS32) || defined(CONFIG_RISCV) || \
677 defined(CONFIG_SANDBOX)
678 board_init, /* Setup chipselects */
681 * TODO: printing of the clock inforamtion of the board is now
682 * implemented as part of bdinfo command. Currently only support for
683 * davinci SOC's is added. Remove this check once all the board
687 set_cpu_clk_info, /* Setup clock information */
689 #ifdef CONFIG_EFI_LOADER
695 #if CONFIG_IS_ENABLED(WDT)
698 INIT_FUNC_WATCHDOG_RESET
699 #ifdef CONFIG_NEEDS_MANUAL_RELOC
700 initr_manual_reloc_cmdtable,
702 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_MIPS)
705 #ifdef CONFIG_ADDR_MAP
708 #if defined(CONFIG_BOARD_EARLY_INIT_R)
711 INIT_FUNC_WATCHDOG_RESET
715 INIT_FUNC_WATCHDOG_RESET
716 #if defined(CONFIG_PCI) && defined(CONFIG_SYS_EARLY_PCI_INIT)
718 * Do early PCI configuration _before_ the flash gets initialised,
719 * because PCU resources are crucial for flash access on some boards.
723 #ifdef CONFIG_ARCH_EARLY_INIT_R
727 #ifdef CONFIG_MTD_NOR_FLASH
730 INIT_FUNC_WATCHDOG_RESET
731 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_X86)
732 /* initialize higher level parts of CPU like time base and timers */
735 #ifdef CONFIG_CMD_NAND
738 #ifdef CONFIG_CMD_ONENAND
745 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
746 initr_malloc_bootparams,
748 INIT_FUNC_WATCHDOG_RESET
750 #if defined(CONFIG_ID_EEPROM) || defined(CONFIG_SYS_I2C_MAC_OFFSET)
751 mac_read_from_eeprom,
753 INIT_FUNC_WATCHDOG_RESET
754 #if defined(CONFIG_PCI) && !defined(CONFIG_SYS_EARLY_PCI_INIT)
756 * Do pci configuration
765 console_init_r, /* fully init console as a device */
766 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
770 #ifdef CONFIG_ARCH_MISC_INIT
771 arch_misc_init, /* miscellaneous arch-dependent init */
773 #ifdef CONFIG_MISC_INIT_R
774 misc_init_r, /* miscellaneous platform-dependent init */
776 INIT_FUNC_WATCHDOG_RESET
777 #ifdef CONFIG_CMD_KGDB
782 initr_enable_interrupts,
784 #if defined(CONFIG_MICROBLAZE) || defined(CONFIG_M68K)
785 timer_init, /* initialize timer */
787 #if defined(CONFIG_LED_STATUS)
790 /* PPC has a udelay(20) here dating from 2002. Why? */
791 #ifdef CONFIG_CMD_NET
794 #if defined(CONFIG_GPIO_HOG)
797 #ifdef CONFIG_BOARD_LATE_INIT
800 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
801 INIT_FUNC_WATCHDOG_RESET
804 #ifdef CONFIG_BITBANGMII
807 #ifdef CONFIG_CMD_NET
808 INIT_FUNC_WATCHDOG_RESET
814 #if defined(CONFIG_IDE) && !defined(CONFIG_BLK)
817 #ifdef CONFIG_LAST_STAGE_INIT
818 INIT_FUNC_WATCHDOG_RESET
820 * Some parts can be only initialized if all others (like
821 * Interrupts) are up and running (i.e. the PC-style ISA
826 #ifdef CONFIG_CMD_BEDBUG
827 INIT_FUNC_WATCHDOG_RESET
830 #if defined(CONFIG_PRAM)
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 */