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>
21 #include <environment.h>
25 #if defined(CONFIG_CMD_KGDB)
30 #ifdef CONFIG_BITBANGMII
36 #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 DECLARE_GLOBAL_DATA_PTR;
55 ulong monitor_flash_len;
57 __weak int board_flash_wp_on(void)
60 * Most flashes can't be detected when write protection is enabled,
61 * so provide a way to let U-Boot gracefully ignore write protected
67 __weak void cpu_secondary_init_r(void)
71 static int initr_secondary_cpu(void)
74 * after non-volatile devices & environment is setup and cpu code have
75 * another round to deal with any initialization that might require
76 * full access to the environment or loading of some image (firmware)
77 * from a non-volatile device
79 /* TODO: maybe define this for all archs? */
80 cpu_secondary_init_r();
85 static int initr_trace(void)
88 trace_init(gd->trace_buff, CONFIG_TRACE_BUFFER_SIZE);
94 static int initr_reloc(void)
96 /* tell others: relocation done */
97 gd->flags |= GD_FLG_RELOC | GD_FLG_FULL_MALLOC_INIT;
104 * Some of these functions are needed purely because the functions they
105 * call return void. If we change them to return 0, these stubs can go away.
107 static int initr_caches(void)
115 __weak int fixup_cpu(void)
120 static int initr_reloc_global_data(void)
123 monitor_flash_len = _end - __image_copy_start;
124 #elif defined(CONFIG_NDS32) || defined(CONFIG_RISCV)
125 monitor_flash_len = (ulong)&_end - (ulong)&_start;
126 #elif !defined(CONFIG_SANDBOX) && !defined(CONFIG_NIOS2)
127 monitor_flash_len = (ulong)&__init_end - gd->relocaddr;
129 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
131 * The gd->cpu pointer is set to an address in flash before relocation.
132 * We need to update it to point to the same CPU entry in RAM.
133 * TODO: why not just add gd->reloc_ofs?
135 gd->arch.cpu += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
138 * If we didn't know the cpu mask & # cores, we can save them of
139 * now rather than 'computing' them constantly
143 #if !defined(CONFIG_ENV_ADDR) || defined(ENV_IS_EMBEDDED)
145 * Relocate the early env_addr pointer unless we know it is not inside
146 * the binary. Some systems need this and for the rest, it doesn't hurt.
148 gd->env_addr += gd->reloc_off;
150 #ifdef CONFIG_OF_EMBED
152 * The fdt_blob needs to be moved to new relocation address
153 * incase of FDT blob is embedded with in image
155 gd->fdt_blob += gd->reloc_off;
157 #ifdef CONFIG_EFI_LOADER
158 efi_runtime_relocate(gd->relocaddr, NULL);
164 static int initr_serial(void)
170 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_MIPS)
171 static int initr_trap(void)
174 * Setup trap handlers
176 #if defined(CONFIG_PPC)
177 trap_init(gd->relocaddr);
179 trap_init(CONFIG_SYS_SDRAM_BASE);
185 #ifdef CONFIG_ADDR_MAP
186 static int initr_addr_map(void)
195 static int initr_post_backlog(void)
197 post_output_backlog();
202 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
203 static int initr_unlock_ram_in_cache(void)
205 unlock_ram_in_cache(); /* it's time to unlock D-cache in e500 */
211 static int initr_pci(void)
213 #ifndef CONFIG_DM_PCI
221 static int initr_barrier(void)
224 /* TODO: Can we not use dmb() macros for this? */
230 static int initr_malloc(void)
234 #if CONFIG_VAL(SYS_MALLOC_F_LEN)
235 debug("Pre-reloc malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr,
236 gd->malloc_ptr / 1024);
238 /* The malloc area is immediately below the monitor copy in DRAM */
239 malloc_start = gd->relocaddr - TOTAL_MALLOC_LEN;
240 mem_malloc_init((ulong)map_sysmem(malloc_start, TOTAL_MALLOC_LEN),
245 static int initr_console_record(void)
247 #if defined(CONFIG_CONSOLE_RECORD)
248 return console_record_init();
254 #ifdef CONFIG_SYS_NONCACHED_MEMORY
255 static int initr_noncached(void)
262 #ifdef CONFIG_OF_LIVE
263 static int initr_of_live(void)
267 bootstage_start(BOOTSTAGE_ID_ACCUM_OF_LIVE, "of_live");
268 ret = of_live_build(gd->fdt_blob, (struct device_node **)&gd->of_root);
269 bootstage_accum(BOOTSTAGE_ID_ACCUM_OF_LIVE);
278 static int initr_dm(void)
282 /* Save the pre-reloc driver model and start a new one */
283 gd->dm_root_f = gd->dm_root;
288 bootstage_start(BOOTSTATE_ID_ACCUM_DM_R, "dm_r");
289 ret = dm_init_and_scan(false);
290 bootstage_accum(BOOTSTATE_ID_ACCUM_DM_R);
293 #ifdef CONFIG_TIMER_EARLY
294 ret = dm_timer_init();
303 static int initr_bootstage(void)
305 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
310 __weak int power_init_board(void)
315 static int initr_announce(void)
317 debug("Now running in RAM - U-Boot at: %08lx\n", gd->relocaddr);
321 #ifdef CONFIG_NEEDS_MANUAL_RELOC
322 static int initr_manual_reloc_cmdtable(void)
324 fixup_cmdtable(ll_entry_start(cmd_tbl_t, cmd),
325 ll_entry_count(cmd_tbl_t, cmd));
330 #if defined(CONFIG_MTD_NOR_FLASH)
331 static int initr_flash(void)
333 ulong flash_size = 0;
338 if (board_flash_wp_on())
339 printf("Uninitialized - Write Protect On\n");
341 flash_size = flash_init();
343 print_size(flash_size, "");
344 #ifdef CONFIG_SYS_FLASH_CHECKSUM
346 * Compute and print flash CRC if flashchecksum is set to 'y'
348 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
350 if (env_get_yesno("flashchecksum") == 1) {
351 const uchar *flash_base = (const uchar *)CONFIG_SYS_FLASH_BASE;
353 printf(" CRC: %08X", crc32(0,
357 #endif /* CONFIG_SYS_FLASH_CHECKSUM */
360 /* update start of FLASH memory */
361 #ifdef CONFIG_SYS_FLASH_BASE
362 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
364 /* size of FLASH memory (final value) */
365 bd->bi_flashsize = flash_size;
367 #if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
368 /* Make a update of the Memctrl. */
369 update_flash_size(flash_size);
372 #if defined(CONFIG_OXC) || defined(CONFIG_RMU)
373 /* flash mapped at end of memory map */
374 bd->bi_flashoffset = CONFIG_SYS_TEXT_BASE + flash_size;
375 #elif CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
376 bd->bi_flashoffset = monitor_flash_len; /* reserved area for monitor */
382 #if defined(CONFIG_PPC) && !defined(CONFIG_DM_SPI)
383 static int initr_spi(void)
385 /* MPC8xx does this here */
386 #ifdef CONFIG_MPC8XX_SPI
387 #if !defined(CONFIG_ENV_IS_IN_EEPROM)
396 #ifdef CONFIG_CMD_NAND
397 /* go init the NAND */
398 static int initr_nand(void)
402 printf("%lu MiB\n", nand_size() / 1024);
407 #if defined(CONFIG_CMD_ONENAND)
408 /* go init the NAND */
409 static int initr_onenand(void)
418 static int initr_mmc(void)
421 mmc_initialize(gd->bd);
427 * Tell if it's OK to load the environment early in boot.
429 * If CONFIG_OF_CONTROL is defined, we'll check with the FDT to see
430 * if this is OK (defaulting to saying it's OK).
432 * NOTE: Loading the environment early can be a bad idea if security is
433 * important, since no verification is done on the environment.
435 * @return 0 if environment should not be loaded, !=0 if it is ok to load
437 static int should_load_env(void)
439 #ifdef CONFIG_OF_CONTROL
440 return fdtdec_get_config_int(gd->fdt_blob, "load-environment", 1);
441 #elif defined CONFIG_DELAY_ENVIRONMENT
448 static int initr_env(void)
450 /* initialize environment */
451 if (should_load_env())
454 set_default_env(NULL, 0);
455 #ifdef CONFIG_OF_CONTROL
456 env_set_addr("fdtcontroladdr", gd->fdt_blob);
459 /* Initialize from environment */
460 load_addr = env_get_ulong("loadaddr", 16, load_addr);
465 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
466 static int initr_malloc_bootparams(void)
468 gd->bd->bi_boot_params = (ulong)malloc(CONFIG_SYS_BOOTPARAMS_LEN);
469 if (!gd->bd->bi_boot_params) {
470 puts("WARNING: Cannot allocate space for boot parameters\n");
477 static int initr_jumptable(void)
483 #if defined(CONFIG_API)
484 static int initr_api(void)
492 /* enable exceptions */
494 static int initr_enable_interrupts(void)
501 #ifdef CONFIG_CMD_NET
502 static int initr_ethaddr(void)
506 /* kept around for legacy kernels only ... ignore the next section */
507 eth_env_get_enetaddr("ethaddr", bd->bi_enetaddr);
508 #ifdef CONFIG_HAS_ETH1
509 eth_env_get_enetaddr("eth1addr", bd->bi_enet1addr);
511 #ifdef CONFIG_HAS_ETH2
512 eth_env_get_enetaddr("eth2addr", bd->bi_enet2addr);
514 #ifdef CONFIG_HAS_ETH3
515 eth_env_get_enetaddr("eth3addr", bd->bi_enet3addr);
517 #ifdef CONFIG_HAS_ETH4
518 eth_env_get_enetaddr("eth4addr", bd->bi_enet4addr);
520 #ifdef CONFIG_HAS_ETH5
521 eth_env_get_enetaddr("eth5addr", bd->bi_enet5addr);
525 #endif /* CONFIG_CMD_NET */
527 #ifdef CONFIG_CMD_KGDB
528 static int initr_kgdb(void)
536 #if defined(CONFIG_LED_STATUS)
537 static int initr_status_led(void)
539 #if defined(CONFIG_LED_STATUS_BOOT)
540 status_led_set(CONFIG_LED_STATUS_BOOT, CONFIG_LED_STATUS_BLINKING);
548 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
549 static int initr_scsi(void)
559 #ifdef CONFIG_BITBANGMII
560 static int initr_bbmii(void)
567 #ifdef CONFIG_CMD_NET
568 static int initr_net(void)
572 #if defined(CONFIG_RESET_PHY_R)
573 debug("Reset Ethernet PHY\n");
581 static int initr_post(void)
583 post_run(NULL, POST_RAM | post_bootmode_get(0));
588 #if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_IDE)
589 static int initr_pcmcia(void)
597 #if defined(CONFIG_IDE) && !defined(CONFIG_BLK)
598 static int initr_ide(void)
601 #if defined(CONFIG_START_IDE)
602 if (board_start_ide())
611 #if defined(CONFIG_PRAM)
613 * Export available size of memory for Linux, taking into account the
614 * protected RAM at top of memory
621 pram = env_get_ulong("pram", 10, CONFIG_PRAM);
622 sprintf(memsz, "%ldk", (long int)((gd->ram_size / 1024) - pram));
623 env_set("mem", memsz);
629 #ifdef CONFIG_CMD_BEDBUG
630 static int initr_bedbug(void)
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 * Over time we hope to remove these functions with code fragments and
651 * stub functions, and instead call the relevant function directly.
653 * We also hope to remove most of the driver-related init and do it if/when
654 * the driver is later used.
656 * TODO: perhaps reset the watchdog in the initcall function after each call?
658 static init_fnc_t init_sequence_r[] = {
661 /* TODO: could x86/PPC have this also perhaps? */
664 /* Note: For Freescale LS2 SoCs, new MMU table is created in DDR.
665 * A temporary mapping of IFC high region is since removed,
666 * so environmental variables in NOR flash is not available
667 * until board_init() is called below to remap IFC to high
671 initr_reloc_global_data,
672 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
673 initr_unlock_ram_in_cache,
678 initr_bootstage, /* Needs malloc() but has its own timer */
679 initr_console_record,
680 #ifdef CONFIG_SYS_NONCACHED_MEMORY
684 #ifdef CONFIG_OF_LIVE
690 #if defined(CONFIG_ARM) || defined(CONFIG_NDS32) || defined(CONFIG_RISCV) || \
691 defined(CONFIG_SANDBOX)
692 board_init, /* Setup chipselects */
695 * TODO: printing of the clock inforamtion of the board is now
696 * implemented as part of bdinfo command. Currently only support for
697 * davinci SOC's is added. Remove this check once all the board
701 set_cpu_clk_info, /* Setup clock information */
703 #ifdef CONFIG_EFI_LOADER
709 INIT_FUNC_WATCHDOG_RESET
710 #ifdef CONFIG_NEEDS_MANUAL_RELOC
711 initr_manual_reloc_cmdtable,
713 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_MIPS)
716 #ifdef CONFIG_ADDR_MAP
719 #if defined(CONFIG_BOARD_EARLY_INIT_R)
722 INIT_FUNC_WATCHDOG_RESET
726 INIT_FUNC_WATCHDOG_RESET
727 #if defined(CONFIG_PCI) && defined(CONFIG_SYS_EARLY_PCI_INIT)
729 * Do early PCI configuration _before_ the flash gets initialised,
730 * because PCU resources are crucial for flash access on some boards.
734 #ifdef CONFIG_ARCH_EARLY_INIT_R
738 #ifdef CONFIG_MTD_NOR_FLASH
741 INIT_FUNC_WATCHDOG_RESET
742 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_X86)
743 /* initialize higher level parts of CPU like time base and timers */
749 #ifdef CONFIG_CMD_NAND
752 #ifdef CONFIG_CMD_ONENAND
759 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
760 initr_malloc_bootparams,
762 INIT_FUNC_WATCHDOG_RESET
764 #if defined(CONFIG_ID_EEPROM) || defined(CONFIG_SYS_I2C_MAC_OFFSET)
765 mac_read_from_eeprom,
767 INIT_FUNC_WATCHDOG_RESET
768 #if defined(CONFIG_PCI) && !defined(CONFIG_SYS_EARLY_PCI_INIT)
770 * Do pci configuration
779 console_init_r, /* fully init console as a device */
780 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
784 #ifdef CONFIG_ARCH_MISC_INIT
785 arch_misc_init, /* miscellaneous arch-dependent init */
787 #ifdef CONFIG_MISC_INIT_R
788 misc_init_r, /* miscellaneous platform-dependent init */
790 INIT_FUNC_WATCHDOG_RESET
791 #ifdef CONFIG_CMD_KGDB
796 initr_enable_interrupts,
798 #if defined(CONFIG_MICROBLAZE) || defined(CONFIG_M68K)
799 timer_init, /* initialize timer */
801 #if defined(CONFIG_LED_STATUS)
804 /* PPC has a udelay(20) here dating from 2002. Why? */
805 #ifdef CONFIG_CMD_NET
808 #ifdef CONFIG_BOARD_LATE_INIT
811 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
812 INIT_FUNC_WATCHDOG_RESET
815 #ifdef CONFIG_BITBANGMII
818 #ifdef CONFIG_CMD_NET
819 INIT_FUNC_WATCHDOG_RESET
825 #if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_IDE)
828 #if defined(CONFIG_IDE) && !defined(CONFIG_BLK)
831 #ifdef CONFIG_LAST_STAGE_INIT
832 INIT_FUNC_WATCHDOG_RESET
834 * Some parts can be only initialized if all others (like
835 * Interrupts) are up and running (i.e. the PC-style ISA
840 #ifdef CONFIG_CMD_BEDBUG
841 INIT_FUNC_WATCHDOG_RESET
844 #if defined(CONFIG_PRAM)
850 void board_init_r(gd_t *new_gd, ulong dest_addr)
853 * Set up the new global data pointer. So far only x86 does this
855 * TODO(sjg@chromium.org): Consider doing this for all archs, or
856 * dropping the new_gd parameter.
858 #if CONFIG_IS_ENABLED(X86_64)
859 arch_setup_gd(new_gd);
862 #ifdef CONFIG_NEEDS_MANUAL_RELOC
866 #if !defined(CONFIG_X86) && !defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
869 gd->flags &= ~GD_FLG_LOG_READY;
871 #ifdef CONFIG_NEEDS_MANUAL_RELOC
872 for (i = 0; i < ARRAY_SIZE(init_sequence_r); i++)
873 init_sequence_r[i] += gd->reloc_off;
876 if (initcall_run_list(init_sequence_r))
879 /* NOTREACHED - run_main_loop() does not return */