1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (c) 2011 The Chromium OS Authors.
4 * (C) Copyright 2002-2006
8 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
14 #include <u-boot/crc.h>
15 /* TODO: can we just include all these headers whether needed or not? */
16 #if defined(CONFIG_CMD_BEDBUG)
17 #include <bedbug/type.h>
23 #include <env_internal.h>
27 #if defined(CONFIG_CMD_KGDB)
32 #ifdef CONFIG_BITBANGMII
38 #include <onenand_uboot.h>
41 #include <status_led.h>
42 #include <stdio_dev.h>
46 #ifdef CONFIG_ADDR_MAP
49 #include <asm/sections.h>
51 #include <linux/compiler.h>
52 #include <linux/err.h>
53 #include <efi_loader.h>
55 #if defined(CONFIG_GPIO_HOG)
59 DECLARE_GLOBAL_DATA_PTR;
61 ulong monitor_flash_len;
63 __weak int board_flash_wp_on(void)
66 * Most flashes can't be detected when write protection is enabled,
67 * so provide a way to let U-Boot gracefully ignore write protected
73 __weak void cpu_secondary_init_r(void)
77 static int initr_secondary_cpu(void)
80 * after non-volatile devices & environment is setup and cpu code have
81 * another round to deal with any initialization that might require
82 * full access to the environment or loading of some image (firmware)
83 * from a non-volatile device
85 /* TODO: maybe define this for all archs? */
86 cpu_secondary_init_r();
91 static int initr_trace(void)
94 trace_init(gd->trace_buff, CONFIG_TRACE_BUFFER_SIZE);
100 static int initr_reloc(void)
102 /* tell others: relocation done */
103 gd->flags |= GD_FLG_RELOC | GD_FLG_FULL_MALLOC_INIT;
110 * Some of these functions are needed purely because the functions they
111 * call return void. If we change them to return 0, these stubs can go away.
113 static int initr_caches(void)
121 __weak int fixup_cpu(void)
126 static int initr_reloc_global_data(void)
129 monitor_flash_len = _end - __image_copy_start;
130 #elif defined(CONFIG_NDS32) || defined(CONFIG_RISCV)
131 monitor_flash_len = (ulong)&_end - (ulong)&_start;
132 #elif !defined(CONFIG_SANDBOX) && !defined(CONFIG_NIOS2)
133 monitor_flash_len = (ulong)&__init_end - gd->relocaddr;
135 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
137 * The gd->cpu pointer is set to an address in flash before relocation.
138 * We need to update it to point to the same CPU entry in RAM.
139 * TODO: why not just add gd->reloc_ofs?
141 gd->arch.cpu += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
144 * If we didn't know the cpu mask & # cores, we can save them of
145 * now rather than 'computing' them constantly
149 #ifdef CONFIG_SYS_RELOC_GD_ENV_ADDR
151 * Relocate the early env_addr pointer unless we know it is not inside
152 * the binary. Some systems need this and for the rest, it doesn't hurt.
154 gd->env_addr += gd->reloc_off;
156 #ifdef CONFIG_OF_EMBED
158 * The fdt_blob needs to be moved to new relocation address
159 * incase of FDT blob is embedded with in image
161 gd->fdt_blob += gd->reloc_off;
163 #ifdef CONFIG_EFI_LOADER
165 * On the ARM architecture gd is mapped to a fixed register (r9 or x18).
166 * As this register may be overwritten by an EFI payload we save it here
167 * and restore it on every callback entered.
171 efi_runtime_relocate(gd->relocaddr, NULL);
177 static int initr_serial(void)
183 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_MIPS)
184 static int initr_trap(void)
187 * Setup trap handlers
189 #if defined(CONFIG_PPC)
190 trap_init(gd->relocaddr);
192 trap_init(CONFIG_SYS_SDRAM_BASE);
198 #ifdef CONFIG_ADDR_MAP
199 static int initr_addr_map(void)
208 static int initr_post_backlog(void)
210 post_output_backlog();
215 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
216 static int initr_unlock_ram_in_cache(void)
218 unlock_ram_in_cache(); /* it's time to unlock D-cache in e500 */
224 static int initr_pci(void)
226 #ifndef CONFIG_DM_PCI
234 static int initr_barrier(void)
237 /* TODO: Can we not use dmb() macros for this? */
243 static int initr_malloc(void)
247 #if CONFIG_VAL(SYS_MALLOC_F_LEN)
248 debug("Pre-reloc malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr,
249 gd->malloc_ptr / 1024);
251 /* The malloc area is immediately below the monitor copy in DRAM */
253 * This value MUST match the value of gd->start_addr_sp in board_f.c:
254 * reserve_noncached().
256 malloc_start = gd->relocaddr - TOTAL_MALLOC_LEN;
257 mem_malloc_init((ulong)map_sysmem(malloc_start, TOTAL_MALLOC_LEN),
262 static int initr_console_record(void)
264 #if defined(CONFIG_CONSOLE_RECORD)
265 return console_record_init();
271 #ifdef CONFIG_SYS_NONCACHED_MEMORY
272 static int initr_noncached(void)
279 #ifdef CONFIG_OF_LIVE
280 static int initr_of_live(void)
284 bootstage_start(BOOTSTAGE_ID_ACCUM_OF_LIVE, "of_live");
285 ret = of_live_build(gd->fdt_blob, (struct device_node **)&gd->of_root);
286 bootstage_accum(BOOTSTAGE_ID_ACCUM_OF_LIVE);
295 static int initr_dm(void)
299 /* Save the pre-reloc driver model and start a new one */
300 gd->dm_root_f = gd->dm_root;
305 bootstage_start(BOOTSTATE_ID_ACCUM_DM_R, "dm_r");
306 ret = dm_init_and_scan(false);
307 bootstage_accum(BOOTSTATE_ID_ACCUM_DM_R);
310 #ifdef CONFIG_TIMER_EARLY
311 ret = dm_timer_init();
320 static int initr_bootstage(void)
322 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
327 __weak int power_init_board(void)
332 static int initr_announce(void)
334 debug("Now running in RAM - U-Boot at: %08lx\n", gd->relocaddr);
338 #ifdef CONFIG_NEEDS_MANUAL_RELOC
339 static int initr_manual_reloc_cmdtable(void)
341 fixup_cmdtable(ll_entry_start(cmd_tbl_t, cmd),
342 ll_entry_count(cmd_tbl_t, cmd));
347 #if defined(CONFIG_MTD_NOR_FLASH)
348 static int initr_flash(void)
350 ulong flash_size = 0;
355 if (board_flash_wp_on())
356 printf("Uninitialized - Write Protect On\n");
358 flash_size = flash_init();
360 print_size(flash_size, "");
361 #ifdef CONFIG_SYS_FLASH_CHECKSUM
363 * Compute and print flash CRC if flashchecksum is set to 'y'
365 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
367 if (env_get_yesno("flashchecksum") == 1) {
368 const uchar *flash_base = (const uchar *)CONFIG_SYS_FLASH_BASE;
370 printf(" CRC: %08X", crc32(0,
374 #endif /* CONFIG_SYS_FLASH_CHECKSUM */
377 /* update start of FLASH memory */
378 #ifdef CONFIG_SYS_FLASH_BASE
379 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
381 /* size of FLASH memory (final value) */
382 bd->bi_flashsize = flash_size;
384 #if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
385 /* Make a update of the Memctrl. */
386 update_flash_size(flash_size);
389 #if defined(CONFIG_OXC) || defined(CONFIG_RMU)
390 /* flash mapped at end of memory map */
391 bd->bi_flashoffset = CONFIG_SYS_TEXT_BASE + flash_size;
392 #elif CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
393 bd->bi_flashoffset = monitor_flash_len; /* reserved area for monitor */
399 #ifdef CONFIG_CMD_NAND
400 /* go init the NAND */
401 static int initr_nand(void)
405 printf("%lu MiB\n", nand_size() / 1024);
410 #if defined(CONFIG_CMD_ONENAND)
411 /* go init the NAND */
412 static int initr_onenand(void)
421 static int initr_mmc(void)
424 mmc_initialize(gd->bd);
430 * Tell if it's OK to load the environment early in boot.
432 * If CONFIG_OF_CONTROL is defined, we'll check with the FDT to see
433 * if this is OK (defaulting to saying it's OK).
435 * NOTE: Loading the environment early can be a bad idea if security is
436 * important, since no verification is done on the environment.
438 * @return 0 if environment should not be loaded, !=0 if it is ok to load
440 static int should_load_env(void)
442 #ifdef CONFIG_OF_CONTROL
443 return fdtdec_get_config_int(gd->fdt_blob, "load-environment", 1);
444 #elif defined CONFIG_DELAY_ENVIRONMENT
451 static int initr_env(void)
453 /* initialize environment */
454 if (should_load_env())
457 env_set_default(NULL, 0);
458 #ifdef CONFIG_OF_CONTROL
459 env_set_hex("fdtcontroladdr",
460 (unsigned long)map_to_sysmem(gd->fdt_blob));
463 /* Initialize from environment */
464 load_addr = env_get_ulong("loadaddr", 16, load_addr);
469 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
470 static int initr_malloc_bootparams(void)
472 gd->bd->bi_boot_params = (ulong)malloc(CONFIG_SYS_BOOTPARAMS_LEN);
473 if (!gd->bd->bi_boot_params) {
474 puts("WARNING: Cannot allocate space for boot parameters\n");
481 static int initr_jumptable(void)
487 #if defined(CONFIG_API)
488 static int initr_api(void)
496 /* enable exceptions */
498 static int initr_enable_interrupts(void)
505 #ifdef CONFIG_CMD_NET
506 static int initr_ethaddr(void)
510 /* kept around for legacy kernels only ... ignore the next section */
511 eth_env_get_enetaddr("ethaddr", bd->bi_enetaddr);
512 #ifdef CONFIG_HAS_ETH1
513 eth_env_get_enetaddr("eth1addr", bd->bi_enet1addr);
515 #ifdef CONFIG_HAS_ETH2
516 eth_env_get_enetaddr("eth2addr", bd->bi_enet2addr);
518 #ifdef CONFIG_HAS_ETH3
519 eth_env_get_enetaddr("eth3addr", bd->bi_enet3addr);
521 #ifdef CONFIG_HAS_ETH4
522 eth_env_get_enetaddr("eth4addr", bd->bi_enet4addr);
524 #ifdef CONFIG_HAS_ETH5
525 eth_env_get_enetaddr("eth5addr", bd->bi_enet5addr);
529 #endif /* CONFIG_CMD_NET */
531 #ifdef CONFIG_CMD_KGDB
532 static int initr_kgdb(void)
540 #if defined(CONFIG_LED_STATUS)
541 static int initr_status_led(void)
543 #if defined(CONFIG_LED_STATUS_BOOT)
544 status_led_set(CONFIG_LED_STATUS_BOOT, CONFIG_LED_STATUS_BLINKING);
552 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
553 static int initr_scsi(void)
563 #ifdef CONFIG_BITBANGMII
564 static int initr_bbmii(void)
571 #ifdef CONFIG_CMD_NET
572 static int initr_net(void)
576 #if defined(CONFIG_RESET_PHY_R)
577 debug("Reset Ethernet PHY\n");
585 static int initr_post(void)
587 post_run(NULL, POST_RAM | post_bootmode_get(0));
592 #if defined(CONFIG_IDE) && !defined(CONFIG_BLK)
593 static int initr_ide(void)
596 #if defined(CONFIG_START_IDE)
597 if (board_start_ide())
606 #if defined(CONFIG_PRAM)
608 * Export available size of memory for Linux, taking into account the
609 * protected RAM at top of memory
616 pram = env_get_ulong("pram", 10, CONFIG_PRAM);
617 sprintf(memsz, "%ldk", (long int)((gd->ram_size / 1024) - pram));
618 env_set("mem", memsz);
624 #ifdef CONFIG_CMD_BEDBUG
625 static int initr_bedbug(void)
633 static int run_main_loop(void)
635 #ifdef CONFIG_SANDBOX
636 sandbox_main_loop_init();
638 /* main_loop() can return to retry autoboot, if so just run it again */
645 * We hope to remove most of the driver-related init and do it if/when
646 * the driver is later used.
648 * TODO: perhaps reset the watchdog in the initcall function after each call?
650 static init_fnc_t init_sequence_r[] = {
653 /* TODO: could x86/PPC have this also perhaps? */
656 /* Note: For Freescale LS2 SoCs, new MMU table is created in DDR.
657 * A temporary mapping of IFC high region is since removed,
658 * so environmental variables in NOR flash is not available
659 * until board_init() is called below to remap IFC to high
663 initr_reloc_global_data,
664 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
665 initr_unlock_ram_in_cache,
670 initr_bootstage, /* Needs malloc() but has its own timer */
671 initr_console_record,
672 #ifdef CONFIG_SYS_NONCACHED_MEMORY
675 #ifdef CONFIG_OF_LIVE
681 #if defined(CONFIG_ARM) || defined(CONFIG_NDS32) || defined(CONFIG_RISCV) || \
682 defined(CONFIG_SANDBOX)
683 board_init, /* Setup chipselects */
686 * TODO: printing of the clock inforamtion of the board is now
687 * implemented as part of bdinfo command. Currently only support for
688 * davinci SOC's is added. Remove this check once all the board
692 set_cpu_clk_info, /* Setup clock information */
694 #ifdef CONFIG_EFI_LOADER
700 #if CONFIG_IS_ENABLED(WDT)
703 INIT_FUNC_WATCHDOG_RESET
704 #ifdef CONFIG_NEEDS_MANUAL_RELOC
705 initr_manual_reloc_cmdtable,
707 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_MIPS)
710 #ifdef CONFIG_ADDR_MAP
713 #if defined(CONFIG_BOARD_EARLY_INIT_R)
716 INIT_FUNC_WATCHDOG_RESET
720 INIT_FUNC_WATCHDOG_RESET
721 #if defined(CONFIG_PCI) && defined(CONFIG_SYS_EARLY_PCI_INIT)
723 * Do early PCI configuration _before_ the flash gets initialised,
724 * because PCU resources are crucial for flash access on some boards.
728 #ifdef CONFIG_ARCH_EARLY_INIT_R
732 #ifdef CONFIG_MTD_NOR_FLASH
735 INIT_FUNC_WATCHDOG_RESET
736 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_X86)
737 /* initialize higher level parts of CPU like time base and timers */
740 #ifdef CONFIG_CMD_NAND
743 #ifdef CONFIG_CMD_ONENAND
750 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
751 initr_malloc_bootparams,
753 INIT_FUNC_WATCHDOG_RESET
755 #if defined(CONFIG_ID_EEPROM) || defined(CONFIG_SYS_I2C_MAC_OFFSET)
756 mac_read_from_eeprom,
758 INIT_FUNC_WATCHDOG_RESET
759 #if defined(CONFIG_PCI) && !defined(CONFIG_SYS_EARLY_PCI_INIT)
761 * Do pci configuration
770 console_init_r, /* fully init console as a device */
771 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
775 #ifdef CONFIG_ARCH_MISC_INIT
776 arch_misc_init, /* miscellaneous arch-dependent init */
778 #ifdef CONFIG_MISC_INIT_R
779 misc_init_r, /* miscellaneous platform-dependent init */
781 INIT_FUNC_WATCHDOG_RESET
782 #ifdef CONFIG_CMD_KGDB
787 initr_enable_interrupts,
789 #if defined(CONFIG_MICROBLAZE) || defined(CONFIG_M68K)
790 timer_init, /* initialize timer */
792 #if defined(CONFIG_LED_STATUS)
795 /* PPC has a udelay(20) here dating from 2002. Why? */
796 #ifdef CONFIG_CMD_NET
799 #if defined(CONFIG_GPIO_HOG)
802 #ifdef CONFIG_BOARD_LATE_INIT
805 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
806 INIT_FUNC_WATCHDOG_RESET
809 #ifdef CONFIG_BITBANGMII
812 #ifdef CONFIG_CMD_NET
813 INIT_FUNC_WATCHDOG_RESET
819 #if defined(CONFIG_IDE) && !defined(CONFIG_BLK)
822 #ifdef CONFIG_LAST_STAGE_INIT
823 INIT_FUNC_WATCHDOG_RESET
825 * Some parts can be only initialized if all others (like
826 * Interrupts) are up and running (i.e. the PC-style ISA
831 #ifdef CONFIG_CMD_BEDBUG
832 INIT_FUNC_WATCHDOG_RESET
835 #if defined(CONFIG_PRAM)
841 void board_init_r(gd_t *new_gd, ulong dest_addr)
844 * Set up the new global data pointer. So far only x86 does this
847 * dropping the new_gd parameter.
849 #if CONFIG_IS_ENABLED(X86_64)
850 arch_setup_gd(new_gd);
853 #ifdef CONFIG_NEEDS_MANUAL_RELOC
857 #if !defined(CONFIG_X86) && !defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
860 gd->flags &= ~GD_FLG_LOG_READY;
862 #ifdef CONFIG_NEEDS_MANUAL_RELOC
863 for (i = 0; i < ARRAY_SIZE(init_sequence_r); i++)
864 init_sequence_r[i] += gd->reloc_off;
867 if (initcall_run_list(init_sequence_r))
870 /* NOTREACHED - run_main_loop() does not return */