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 /* 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>
39 #include <stdio_dev.h>
43 #ifdef CONFIG_ADDR_MAP
46 #include <asm/sections.h>
48 #include <linux/compiler.h>
49 #include <linux/err.h>
50 #include <efi_loader.h>
52 DECLARE_GLOBAL_DATA_PTR;
54 ulong monitor_flash_len;
56 __weak int board_flash_wp_on(void)
59 * Most flashes can't be detected when write protection is enabled,
60 * so provide a way to let U-Boot gracefully ignore write protected
66 __weak void cpu_secondary_init_r(void)
70 static int initr_secondary_cpu(void)
73 * after non-volatile devices & environment is setup and cpu code have
74 * another round to deal with any initialization that might require
75 * full access to the environment or loading of some image (firmware)
76 * from a non-volatile device
78 /* TODO: maybe define this for all archs? */
79 cpu_secondary_init_r();
84 static int initr_trace(void)
87 trace_init(gd->trace_buff, CONFIG_TRACE_BUFFER_SIZE);
93 static int initr_reloc(void)
95 /* tell others: relocation done */
96 gd->flags |= GD_FLG_RELOC | GD_FLG_FULL_MALLOC_INIT;
103 * Some of these functions are needed purely because the functions they
104 * call return void. If we change them to return 0, these stubs can go away.
106 static int initr_caches(void)
114 __weak int fixup_cpu(void)
119 static int initr_reloc_global_data(void)
122 monitor_flash_len = _end - __image_copy_start;
123 #elif defined(CONFIG_NDS32) || defined(CONFIG_RISCV)
124 monitor_flash_len = (ulong)&_end - (ulong)&_start;
125 #elif !defined(CONFIG_SANDBOX) && !defined(CONFIG_NIOS2)
126 monitor_flash_len = (ulong)&__init_end - gd->relocaddr;
128 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
130 * The gd->cpu pointer is set to an address in flash before relocation.
131 * We need to update it to point to the same CPU entry in RAM.
132 * TODO: why not just add gd->reloc_ofs?
134 gd->arch.cpu += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
137 * If we didn't know the cpu mask & # cores, we can save them of
138 * now rather than 'computing' them constantly
142 #if !defined(CONFIG_ENV_ADDR) || defined(ENV_IS_EMBEDDED)
144 * Relocate the early env_addr pointer unless we know it is not inside
145 * the binary. Some systems need this and for the rest, it doesn't hurt.
147 gd->env_addr += gd->reloc_off;
149 #ifdef CONFIG_OF_EMBED
151 * The fdt_blob needs to be moved to new relocation address
152 * incase of FDT blob is embedded with in image
154 gd->fdt_blob += gd->reloc_off;
156 #ifdef CONFIG_EFI_LOADER
158 * On the ARM architecture gd is mapped to a fixed register (r9 or x18).
159 * As this register may be overwritten by an EFI payload we save it here
160 * and restore it on every callback entered.
164 efi_runtime_relocate(gd->relocaddr, NULL);
170 static int initr_serial(void)
176 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_MIPS)
177 static int initr_trap(void)
180 * Setup trap handlers
182 #if defined(CONFIG_PPC)
183 trap_init(gd->relocaddr);
185 trap_init(CONFIG_SYS_SDRAM_BASE);
191 #ifdef CONFIG_ADDR_MAP
192 static int initr_addr_map(void)
201 static int initr_post_backlog(void)
203 post_output_backlog();
208 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
209 static int initr_unlock_ram_in_cache(void)
211 unlock_ram_in_cache(); /* it's time to unlock D-cache in e500 */
217 static int initr_pci(void)
219 #ifndef CONFIG_DM_PCI
227 static int initr_barrier(void)
230 /* TODO: Can we not use dmb() macros for this? */
236 static int initr_malloc(void)
240 #if CONFIG_VAL(SYS_MALLOC_F_LEN)
241 debug("Pre-reloc malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr,
242 gd->malloc_ptr / 1024);
244 /* The malloc area is immediately below the monitor copy in DRAM */
245 malloc_start = gd->relocaddr - TOTAL_MALLOC_LEN;
246 mem_malloc_init((ulong)map_sysmem(malloc_start, TOTAL_MALLOC_LEN),
251 static int initr_console_record(void)
253 #if defined(CONFIG_CONSOLE_RECORD)
254 return console_record_init();
260 #ifdef CONFIG_SYS_NONCACHED_MEMORY
261 static int initr_noncached(void)
268 #ifdef CONFIG_OF_LIVE
269 static int initr_of_live(void)
273 bootstage_start(BOOTSTAGE_ID_ACCUM_OF_LIVE, "of_live");
274 ret = of_live_build(gd->fdt_blob, (struct device_node **)&gd->of_root);
275 bootstage_accum(BOOTSTAGE_ID_ACCUM_OF_LIVE);
284 static int initr_dm(void)
288 /* Save the pre-reloc driver model and start a new one */
289 gd->dm_root_f = gd->dm_root;
294 bootstage_start(BOOTSTATE_ID_ACCUM_DM_R, "dm_r");
295 ret = dm_init_and_scan(false);
296 bootstage_accum(BOOTSTATE_ID_ACCUM_DM_R);
299 #ifdef CONFIG_TIMER_EARLY
300 ret = dm_timer_init();
309 static int initr_bootstage(void)
311 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
316 __weak int power_init_board(void)
321 static int initr_announce(void)
323 debug("Now running in RAM - U-Boot at: %08lx\n", gd->relocaddr);
327 #ifdef CONFIG_NEEDS_MANUAL_RELOC
328 static int initr_manual_reloc_cmdtable(void)
330 fixup_cmdtable(ll_entry_start(cmd_tbl_t, cmd),
331 ll_entry_count(cmd_tbl_t, cmd));
336 #if defined(CONFIG_MTD_NOR_FLASH)
337 static int initr_flash(void)
339 ulong flash_size = 0;
344 if (board_flash_wp_on())
345 printf("Uninitialized - Write Protect On\n");
347 flash_size = flash_init();
349 print_size(flash_size, "");
350 #ifdef CONFIG_SYS_FLASH_CHECKSUM
352 * Compute and print flash CRC if flashchecksum is set to 'y'
354 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
356 if (env_get_yesno("flashchecksum") == 1) {
357 const uchar *flash_base = (const uchar *)CONFIG_SYS_FLASH_BASE;
359 printf(" CRC: %08X", crc32(0,
363 #endif /* CONFIG_SYS_FLASH_CHECKSUM */
366 /* update start of FLASH memory */
367 #ifdef CONFIG_SYS_FLASH_BASE
368 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
370 /* size of FLASH memory (final value) */
371 bd->bi_flashsize = flash_size;
373 #if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
374 /* Make a update of the Memctrl. */
375 update_flash_size(flash_size);
378 #if defined(CONFIG_OXC) || defined(CONFIG_RMU)
379 /* flash mapped at end of memory map */
380 bd->bi_flashoffset = CONFIG_SYS_TEXT_BASE + flash_size;
381 #elif CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
382 bd->bi_flashoffset = monitor_flash_len; /* reserved area for monitor */
388 #ifdef CONFIG_CMD_NAND
389 /* go init the NAND */
390 static int initr_nand(void)
394 printf("%lu MiB\n", nand_size() / 1024);
399 #if defined(CONFIG_CMD_ONENAND)
400 /* go init the NAND */
401 static int initr_onenand(void)
410 static int initr_mmc(void)
413 mmc_initialize(gd->bd);
419 * Tell if it's OK to load the environment early in boot.
421 * If CONFIG_OF_CONTROL is defined, we'll check with the FDT to see
422 * if this is OK (defaulting to saying it's OK).
424 * NOTE: Loading the environment early can be a bad idea if security is
425 * important, since no verification is done on the environment.
427 * @return 0 if environment should not be loaded, !=0 if it is ok to load
429 static int should_load_env(void)
431 #ifdef CONFIG_OF_CONTROL
432 return fdtdec_get_config_int(gd->fdt_blob, "load-environment", 1);
433 #elif defined CONFIG_DELAY_ENVIRONMENT
440 static int initr_env(void)
442 /* initialize environment */
443 if (should_load_env())
446 set_default_env(NULL, 0);
447 #ifdef CONFIG_OF_CONTROL
448 env_set_hex("fdtcontroladdr",
449 (unsigned long)map_to_sysmem(gd->fdt_blob));
452 /* Initialize from environment */
453 load_addr = env_get_ulong("loadaddr", 16, load_addr);
458 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
459 static int initr_malloc_bootparams(void)
461 gd->bd->bi_boot_params = (ulong)malloc(CONFIG_SYS_BOOTPARAMS_LEN);
462 if (!gd->bd->bi_boot_params) {
463 puts("WARNING: Cannot allocate space for boot parameters\n");
470 static int initr_jumptable(void)
476 #if defined(CONFIG_API)
477 static int initr_api(void)
485 /* enable exceptions */
487 static int initr_enable_interrupts(void)
494 #ifdef CONFIG_CMD_NET
495 static int initr_ethaddr(void)
499 /* kept around for legacy kernels only ... ignore the next section */
500 eth_env_get_enetaddr("ethaddr", bd->bi_enetaddr);
501 #ifdef CONFIG_HAS_ETH1
502 eth_env_get_enetaddr("eth1addr", bd->bi_enet1addr);
504 #ifdef CONFIG_HAS_ETH2
505 eth_env_get_enetaddr("eth2addr", bd->bi_enet2addr);
507 #ifdef CONFIG_HAS_ETH3
508 eth_env_get_enetaddr("eth3addr", bd->bi_enet3addr);
510 #ifdef CONFIG_HAS_ETH4
511 eth_env_get_enetaddr("eth4addr", bd->bi_enet4addr);
513 #ifdef CONFIG_HAS_ETH5
514 eth_env_get_enetaddr("eth5addr", bd->bi_enet5addr);
518 #endif /* CONFIG_CMD_NET */
520 #ifdef CONFIG_CMD_KGDB
521 static int initr_kgdb(void)
529 #if defined(CONFIG_LED_STATUS)
530 static int initr_status_led(void)
532 #if defined(CONFIG_LED_STATUS_BOOT)
533 status_led_set(CONFIG_LED_STATUS_BOOT, CONFIG_LED_STATUS_BLINKING);
541 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
542 static int initr_scsi(void)
552 #ifdef CONFIG_BITBANGMII
553 static int initr_bbmii(void)
560 #ifdef CONFIG_CMD_NET
561 static int initr_net(void)
565 #if defined(CONFIG_RESET_PHY_R)
566 debug("Reset Ethernet PHY\n");
574 static int initr_post(void)
576 post_run(NULL, POST_RAM | post_bootmode_get(0));
581 #if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_IDE)
582 static int initr_pcmcia(void)
590 #if defined(CONFIG_IDE) && !defined(CONFIG_BLK)
591 static int initr_ide(void)
594 #if defined(CONFIG_START_IDE)
595 if (board_start_ide())
604 #if defined(CONFIG_PRAM)
606 * Export available size of memory for Linux, taking into account the
607 * protected RAM at top of memory
614 pram = env_get_ulong("pram", 10, CONFIG_PRAM);
615 sprintf(memsz, "%ldk", (long int)((gd->ram_size / 1024) - pram));
616 env_set("mem", memsz);
622 #ifdef CONFIG_CMD_BEDBUG
623 static int initr_bedbug(void)
631 static int run_main_loop(void)
633 #ifdef CONFIG_SANDBOX
634 sandbox_main_loop_init();
636 /* main_loop() can return to retry autoboot, if so just run it again */
643 * We hope to remove most of the driver-related init and do it if/when
644 * the driver is later used.
646 * TODO: perhaps reset the watchdog in the initcall function after each call?
648 static init_fnc_t init_sequence_r[] = {
651 /* TODO: could x86/PPC have this also perhaps? */
654 /* Note: For Freescale LS2 SoCs, new MMU table is created in DDR.
655 * A temporary mapping of IFC high region is since removed,
656 * so environmental variables in NOR flash is not available
657 * until board_init() is called below to remap IFC to high
661 initr_reloc_global_data,
662 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
663 initr_unlock_ram_in_cache,
668 initr_bootstage, /* Needs malloc() but has its own timer */
669 initr_console_record,
670 #ifdef CONFIG_SYS_NONCACHED_MEMORY
674 #ifdef CONFIG_OF_LIVE
680 #if defined(CONFIG_ARM) || defined(CONFIG_NDS32) || defined(CONFIG_RISCV) || \
681 defined(CONFIG_SANDBOX)
682 board_init, /* Setup chipselects */
685 * TODO: printing of the clock inforamtion of the board is now
686 * implemented as part of bdinfo command. Currently only support for
687 * davinci SOC's is added. Remove this check once all the board
691 set_cpu_clk_info, /* Setup clock information */
693 #ifdef CONFIG_EFI_LOADER
699 INIT_FUNC_WATCHDOG_RESET
700 #ifdef CONFIG_NEEDS_MANUAL_RELOC
701 initr_manual_reloc_cmdtable,
703 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_MIPS)
706 #ifdef CONFIG_ADDR_MAP
709 #if defined(CONFIG_BOARD_EARLY_INIT_R)
712 INIT_FUNC_WATCHDOG_RESET
716 INIT_FUNC_WATCHDOG_RESET
717 #if defined(CONFIG_PCI) && defined(CONFIG_SYS_EARLY_PCI_INIT)
719 * Do early PCI configuration _before_ the flash gets initialised,
720 * because PCU resources are crucial for flash access on some boards.
724 #ifdef CONFIG_ARCH_EARLY_INIT_R
728 #ifdef CONFIG_MTD_NOR_FLASH
731 INIT_FUNC_WATCHDOG_RESET
732 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_X86)
733 /* initialize higher level parts of CPU like time base and timers */
736 #ifdef CONFIG_CMD_NAND
739 #ifdef CONFIG_CMD_ONENAND
746 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
747 initr_malloc_bootparams,
749 INIT_FUNC_WATCHDOG_RESET
751 #if defined(CONFIG_ID_EEPROM) || defined(CONFIG_SYS_I2C_MAC_OFFSET)
752 mac_read_from_eeprom,
754 INIT_FUNC_WATCHDOG_RESET
755 #if defined(CONFIG_PCI) && !defined(CONFIG_SYS_EARLY_PCI_INIT)
757 * Do pci configuration
766 console_init_r, /* fully init console as a device */
767 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
771 #ifdef CONFIG_ARCH_MISC_INIT
772 arch_misc_init, /* miscellaneous arch-dependent init */
774 #ifdef CONFIG_MISC_INIT_R
775 misc_init_r, /* miscellaneous platform-dependent init */
777 INIT_FUNC_WATCHDOG_RESET
778 #ifdef CONFIG_CMD_KGDB
783 initr_enable_interrupts,
785 #if defined(CONFIG_MICROBLAZE) || defined(CONFIG_M68K)
786 timer_init, /* initialize timer */
788 #if defined(CONFIG_LED_STATUS)
791 /* PPC has a udelay(20) here dating from 2002. Why? */
792 #ifdef CONFIG_CMD_NET
795 #ifdef CONFIG_BOARD_LATE_INIT
798 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
799 INIT_FUNC_WATCHDOG_RESET
802 #ifdef CONFIG_BITBANGMII
805 #ifdef CONFIG_CMD_NET
806 INIT_FUNC_WATCHDOG_RESET
812 #if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_IDE)
815 #if defined(CONFIG_IDE) && !defined(CONFIG_BLK)
818 #ifdef CONFIG_LAST_STAGE_INIT
819 INIT_FUNC_WATCHDOG_RESET
821 * Some parts can be only initialized if all others (like
822 * Interrupts) are up and running (i.e. the PC-style ISA
827 #ifdef CONFIG_CMD_BEDBUG
828 INIT_FUNC_WATCHDOG_RESET
831 #if defined(CONFIG_PRAM)
837 void board_init_r(gd_t *new_gd, ulong dest_addr)
840 * Set up the new global data pointer. So far only x86 does this
843 * dropping the new_gd parameter.
845 #if CONFIG_IS_ENABLED(X86_64)
846 arch_setup_gd(new_gd);
849 #ifdef CONFIG_NEEDS_MANUAL_RELOC
853 #if !defined(CONFIG_X86) && !defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
856 gd->flags &= ~GD_FLG_LOG_READY;
858 #ifdef CONFIG_NEEDS_MANUAL_RELOC
859 for (i = 0; i < ARRAY_SIZE(init_sequence_r); i++)
860 init_sequence_r[i] += gd->reloc_off;
863 if (initcall_run_list(init_sequence_r))
866 /* NOTREACHED - run_main_loop() does not return */