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>
16 #include <u-boot/crc.h>
17 /* TODO: can we just include all these headers whether needed or not? */
18 #if defined(CONFIG_CMD_BEDBUG)
19 #include <bedbug/type.h>
25 #include <env_internal.h>
29 #if defined(CONFIG_CMD_KGDB)
35 #ifdef CONFIG_BITBANGMII
41 #include <onenand_uboot.h>
44 #include <status_led.h>
45 #include <stdio_dev.h>
49 #ifdef CONFIG_ADDR_MAP
52 #include <asm/sections.h>
54 #include <linux/compiler.h>
55 #include <linux/err.h>
56 #include <efi_loader.h>
58 #if defined(CONFIG_GPIO_HOG)
62 DECLARE_GLOBAL_DATA_PTR;
64 ulong monitor_flash_len;
66 __weak int board_flash_wp_on(void)
69 * Most flashes can't be detected when write protection is enabled,
70 * so provide a way to let U-Boot gracefully ignore write protected
76 __weak void cpu_secondary_init_r(void)
80 static int initr_secondary_cpu(void)
83 * after non-volatile devices & environment is setup and cpu code have
84 * another round to deal with any initialization that might require
85 * full access to the environment or loading of some image (firmware)
86 * from a non-volatile device
88 /* TODO: maybe define this for all archs? */
89 cpu_secondary_init_r();
94 static int initr_trace(void)
97 trace_init(gd->trace_buff, CONFIG_TRACE_BUFFER_SIZE);
103 static int initr_reloc(void)
105 /* tell others: relocation done */
106 gd->flags |= GD_FLG_RELOC | GD_FLG_FULL_MALLOC_INIT;
113 * Some of these functions are needed purely because the functions they
114 * call return void. If we change them to return 0, these stubs can go away.
116 static int initr_caches(void)
124 __weak int fixup_cpu(void)
129 static int initr_reloc_global_data(void)
132 monitor_flash_len = _end - __image_copy_start;
133 #elif defined(CONFIG_NDS32) || defined(CONFIG_RISCV)
134 monitor_flash_len = (ulong)&_end - (ulong)&_start;
135 #elif !defined(CONFIG_SANDBOX) && !defined(CONFIG_NIOS2)
136 monitor_flash_len = (ulong)&__init_end - gd->relocaddr;
138 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
140 * The gd->cpu pointer is set to an address in flash before relocation.
141 * We need to update it to point to the same CPU entry in RAM.
142 * TODO: why not just add gd->reloc_ofs?
144 gd->arch.cpu += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
147 * If we didn't know the cpu mask & # cores, we can save them of
148 * now rather than 'computing' them constantly
152 #ifdef CONFIG_SYS_RELOC_GD_ENV_ADDR
154 * Relocate the early env_addr pointer unless we know it is not inside
155 * the binary. Some systems need this and for the rest, it doesn't hurt.
157 gd->env_addr += gd->reloc_off;
159 #ifdef CONFIG_OF_EMBED
161 * The fdt_blob needs to be moved to new relocation address
162 * incase of FDT blob is embedded with in image
164 gd->fdt_blob += gd->reloc_off;
166 #ifdef CONFIG_EFI_LOADER
168 * On the ARM architecture gd is mapped to a fixed register (r9 or x18).
169 * As this register may be overwritten by an EFI payload we save it here
170 * and restore it on every callback entered.
174 efi_runtime_relocate(gd->relocaddr, NULL);
180 static int initr_serial(void)
186 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_MIPS)
187 static int initr_trap(void)
190 * Setup trap handlers
192 #if defined(CONFIG_PPC)
193 trap_init(gd->relocaddr);
195 trap_init(CONFIG_SYS_SDRAM_BASE);
201 #ifdef CONFIG_ADDR_MAP
202 static int initr_addr_map(void)
211 static int initr_post_backlog(void)
213 post_output_backlog();
218 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
219 static int initr_unlock_ram_in_cache(void)
221 unlock_ram_in_cache(); /* it's time to unlock D-cache in e500 */
227 static int initr_pci(void)
229 #ifndef CONFIG_DM_PCI
237 static int initr_barrier(void)
240 /* TODO: Can we not use dmb() macros for this? */
246 static int initr_malloc(void)
250 #if CONFIG_VAL(SYS_MALLOC_F_LEN)
251 debug("Pre-reloc malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr,
252 gd->malloc_ptr / 1024);
254 /* The malloc area is immediately below the monitor copy in DRAM */
256 * This value MUST match the value of gd->start_addr_sp in board_f.c:
257 * reserve_noncached().
259 malloc_start = gd->relocaddr - TOTAL_MALLOC_LEN;
260 mem_malloc_init((ulong)map_sysmem(malloc_start, TOTAL_MALLOC_LEN),
265 static int initr_console_record(void)
267 #if defined(CONFIG_CONSOLE_RECORD)
268 return console_record_init();
274 #ifdef CONFIG_SYS_NONCACHED_MEMORY
275 static int initr_noncached(void)
282 #ifdef CONFIG_OF_LIVE
283 static int initr_of_live(void)
287 bootstage_start(BOOTSTAGE_ID_ACCUM_OF_LIVE, "of_live");
288 ret = of_live_build(gd->fdt_blob, (struct device_node **)&gd->of_root);
289 bootstage_accum(BOOTSTAGE_ID_ACCUM_OF_LIVE);
298 static int initr_dm(void)
302 /* Save the pre-reloc driver model and start a new one */
303 gd->dm_root_f = gd->dm_root;
308 bootstage_start(BOOTSTATE_ID_ACCUM_DM_R, "dm_r");
309 ret = dm_init_and_scan(false);
310 bootstage_accum(BOOTSTATE_ID_ACCUM_DM_R);
313 #ifdef CONFIG_TIMER_EARLY
314 ret = dm_timer_init();
323 static int initr_bootstage(void)
325 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
330 __weak int power_init_board(void)
335 static int initr_announce(void)
337 debug("Now running in RAM - U-Boot at: %08lx\n", gd->relocaddr);
341 #ifdef CONFIG_NEEDS_MANUAL_RELOC
342 static int initr_manual_reloc_cmdtable(void)
344 fixup_cmdtable(ll_entry_start(cmd_tbl_t, cmd),
345 ll_entry_count(cmd_tbl_t, cmd));
350 #if defined(CONFIG_MTD_NOR_FLASH)
351 static int initr_flash(void)
353 ulong flash_size = 0;
358 if (board_flash_wp_on())
359 printf("Uninitialized - Write Protect On\n");
361 flash_size = flash_init();
363 print_size(flash_size, "");
364 #ifdef CONFIG_SYS_FLASH_CHECKSUM
366 * Compute and print flash CRC if flashchecksum is set to 'y'
368 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
370 if (env_get_yesno("flashchecksum") == 1) {
371 const uchar *flash_base = (const uchar *)CONFIG_SYS_FLASH_BASE;
373 printf(" CRC: %08X", crc32(0,
377 #endif /* CONFIG_SYS_FLASH_CHECKSUM */
380 /* update start of FLASH memory */
381 #ifdef CONFIG_SYS_FLASH_BASE
382 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
384 /* size of FLASH memory (final value) */
385 bd->bi_flashsize = flash_size;
387 #if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
388 /* Make a update of the Memctrl. */
389 update_flash_size(flash_size);
392 #if defined(CONFIG_OXC) || defined(CONFIG_RMU)
393 /* flash mapped at end of memory map */
394 bd->bi_flashoffset = CONFIG_SYS_TEXT_BASE + flash_size;
395 #elif CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
396 bd->bi_flashoffset = monitor_flash_len; /* reserved area for monitor */
402 #ifdef CONFIG_CMD_NAND
403 /* go init the NAND */
404 static int initr_nand(void)
408 printf("%lu MiB\n", nand_size() / 1024);
413 #if defined(CONFIG_CMD_ONENAND)
414 /* go init the NAND */
415 static int initr_onenand(void)
424 static int initr_mmc(void)
427 mmc_initialize(gd->bd);
433 * Tell if it's OK to load the environment early in boot.
435 * If CONFIG_OF_CONTROL is defined, we'll check with the FDT to see
436 * if this is OK (defaulting to saying it's OK).
438 * NOTE: Loading the environment early can be a bad idea if security is
439 * important, since no verification is done on the environment.
441 * @return 0 if environment should not be loaded, !=0 if it is ok to load
443 static int should_load_env(void)
445 #ifdef CONFIG_OF_CONTROL
446 return fdtdec_get_config_int(gd->fdt_blob, "load-environment", 1);
447 #elif defined CONFIG_DELAY_ENVIRONMENT
454 static int initr_env(void)
456 /* initialize environment */
457 if (should_load_env())
460 env_set_default(NULL, 0);
461 #ifdef CONFIG_OF_CONTROL
462 env_set_hex("fdtcontroladdr",
463 (unsigned long)map_to_sysmem(gd->fdt_blob));
466 /* Initialize from environment */
467 load_addr = env_get_ulong("loadaddr", 16, load_addr);
472 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
473 static int initr_malloc_bootparams(void)
475 gd->bd->bi_boot_params = (ulong)malloc(CONFIG_SYS_BOOTPARAMS_LEN);
476 if (!gd->bd->bi_boot_params) {
477 puts("WARNING: Cannot allocate space for boot parameters\n");
484 static int initr_jumptable(void)
490 #if defined(CONFIG_API)
491 static int initr_api(void)
499 /* enable exceptions */
501 static int initr_enable_interrupts(void)
508 #ifdef CONFIG_CMD_NET
509 static int initr_ethaddr(void)
513 /* kept around for legacy kernels only ... ignore the next section */
514 eth_env_get_enetaddr("ethaddr", bd->bi_enetaddr);
515 #ifdef CONFIG_HAS_ETH1
516 eth_env_get_enetaddr("eth1addr", bd->bi_enet1addr);
518 #ifdef CONFIG_HAS_ETH2
519 eth_env_get_enetaddr("eth2addr", bd->bi_enet2addr);
521 #ifdef CONFIG_HAS_ETH3
522 eth_env_get_enetaddr("eth3addr", bd->bi_enet3addr);
524 #ifdef CONFIG_HAS_ETH4
525 eth_env_get_enetaddr("eth4addr", bd->bi_enet4addr);
527 #ifdef CONFIG_HAS_ETH5
528 eth_env_get_enetaddr("eth5addr", bd->bi_enet5addr);
532 #endif /* CONFIG_CMD_NET */
534 #ifdef CONFIG_CMD_KGDB
535 static int initr_kgdb(void)
543 #if defined(CONFIG_LED_STATUS)
544 static int initr_status_led(void)
546 #if defined(CONFIG_LED_STATUS_BOOT)
547 status_led_set(CONFIG_LED_STATUS_BOOT, CONFIG_LED_STATUS_BLINKING);
555 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
556 static int initr_scsi(void)
566 #ifdef CONFIG_BITBANGMII
567 static int initr_bbmii(void)
574 #ifdef CONFIG_CMD_NET
575 static int initr_net(void)
579 #if defined(CONFIG_RESET_PHY_R)
580 debug("Reset Ethernet PHY\n");
588 static int initr_post(void)
590 post_run(NULL, POST_RAM | post_bootmode_get(0));
595 #if defined(CONFIG_IDE) && !defined(CONFIG_BLK)
596 static int initr_ide(void)
599 #if defined(CONFIG_START_IDE)
600 if (board_start_ide())
609 #if defined(CONFIG_PRAM)
611 * Export available size of memory for Linux, taking into account the
612 * protected RAM at top of memory
619 pram = env_get_ulong("pram", 10, CONFIG_PRAM);
620 sprintf(memsz, "%ldk", (long int)((gd->ram_size / 1024) - pram));
621 env_set("mem", memsz);
627 #ifdef CONFIG_CMD_BEDBUG
628 static int initr_bedbug(void)
636 static int run_main_loop(void)
638 #ifdef CONFIG_SANDBOX
639 sandbox_main_loop_init();
641 /* main_loop() can return to retry autoboot, if so just run it again */
648 * We hope to remove most of the driver-related init and do it if/when
649 * the driver is later used.
651 * TODO: perhaps reset the watchdog in the initcall function after each call?
653 static init_fnc_t init_sequence_r[] = {
656 /* TODO: could x86/PPC have this also perhaps? */
659 /* Note: For Freescale LS2 SoCs, new MMU table is created in DDR.
660 * A temporary mapping of IFC high region is since removed,
661 * so environmental variables in NOR flash is not available
662 * until board_init() is called below to remap IFC to high
666 initr_reloc_global_data,
667 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
668 initr_unlock_ram_in_cache,
673 initr_bootstage, /* Needs malloc() but has its own timer */
674 initr_console_record,
675 #ifdef CONFIG_SYS_NONCACHED_MEMORY
678 #ifdef CONFIG_OF_LIVE
684 #if defined(CONFIG_ARM) || defined(CONFIG_NDS32) || defined(CONFIG_RISCV) || \
685 defined(CONFIG_SANDBOX)
686 board_init, /* Setup chipselects */
689 * TODO: printing of the clock inforamtion of the board is now
690 * implemented as part of bdinfo command. Currently only support for
691 * davinci SOC's is added. Remove this check once all the board
695 set_cpu_clk_info, /* Setup clock information */
697 #ifdef CONFIG_EFI_LOADER
703 #if CONFIG_IS_ENABLED(WDT)
706 INIT_FUNC_WATCHDOG_RESET
707 #ifdef CONFIG_NEEDS_MANUAL_RELOC
708 initr_manual_reloc_cmdtable,
710 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_MIPS)
713 #ifdef CONFIG_ADDR_MAP
716 #if defined(CONFIG_BOARD_EARLY_INIT_R)
719 INIT_FUNC_WATCHDOG_RESET
723 INIT_FUNC_WATCHDOG_RESET
724 #if defined(CONFIG_PCI) && defined(CONFIG_SYS_EARLY_PCI_INIT)
726 * Do early PCI configuration _before_ the flash gets initialised,
727 * because PCU resources are crucial for flash access on some boards.
731 #ifdef CONFIG_ARCH_EARLY_INIT_R
735 #ifdef CONFIG_MTD_NOR_FLASH
738 INIT_FUNC_WATCHDOG_RESET
739 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_X86)
740 /* initialize higher level parts of CPU like time base and timers */
743 #ifdef CONFIG_CMD_NAND
746 #ifdef CONFIG_CMD_ONENAND
753 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
754 initr_malloc_bootparams,
756 INIT_FUNC_WATCHDOG_RESET
758 #if defined(CONFIG_ID_EEPROM) || defined(CONFIG_SYS_I2C_MAC_OFFSET)
759 mac_read_from_eeprom,
761 INIT_FUNC_WATCHDOG_RESET
762 #if defined(CONFIG_PCI) && !defined(CONFIG_SYS_EARLY_PCI_INIT)
764 * Do pci configuration
773 console_init_r, /* fully init console as a device */
774 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
778 #ifdef CONFIG_ARCH_MISC_INIT
779 arch_misc_init, /* miscellaneous arch-dependent init */
781 #ifdef CONFIG_MISC_INIT_R
782 misc_init_r, /* miscellaneous platform-dependent init */
784 INIT_FUNC_WATCHDOG_RESET
785 #ifdef CONFIG_CMD_KGDB
790 initr_enable_interrupts,
792 #if defined(CONFIG_MICROBLAZE) || defined(CONFIG_M68K)
793 timer_init, /* initialize timer */
795 #if defined(CONFIG_LED_STATUS)
798 /* PPC has a udelay(20) here dating from 2002. Why? */
799 #ifdef CONFIG_CMD_NET
802 #if defined(CONFIG_GPIO_HOG)
805 #ifdef CONFIG_BOARD_LATE_INIT
808 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
809 INIT_FUNC_WATCHDOG_RESET
812 #ifdef CONFIG_BITBANGMII
815 #ifdef CONFIG_CMD_NET
816 INIT_FUNC_WATCHDOG_RESET
822 #if defined(CONFIG_IDE) && !defined(CONFIG_BLK)
825 #ifdef CONFIG_LAST_STAGE_INIT
826 INIT_FUNC_WATCHDOG_RESET
828 * Some parts can be only initialized if all others (like
829 * Interrupts) are up and running (i.e. the PC-style ISA
834 #ifdef CONFIG_CMD_BEDBUG
835 INIT_FUNC_WATCHDOG_RESET
838 #if defined(CONFIG_PRAM)
844 void board_init_r(gd_t *new_gd, ulong dest_addr)
847 * Set up the new global data pointer. So far only x86 does this
849 * TODO(sjg@chromium.org): Consider doing this for all archs, or
850 * dropping the new_gd parameter.
852 #if CONFIG_IS_ENABLED(X86_64)
853 arch_setup_gd(new_gd);
856 #ifdef CONFIG_NEEDS_MANUAL_RELOC
860 #if !defined(CONFIG_X86) && !defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
863 gd->flags &= ~GD_FLG_LOG_READY;
865 #ifdef CONFIG_NEEDS_MANUAL_RELOC
866 for (i = 0; i < ARRAY_SIZE(init_sequence_r); i++)
867 init_sequence_r[i] += gd->reloc_off;
870 if (initcall_run_list(init_sequence_r))
873 /* NOTREACHED - run_main_loop() does not return */