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 #include <bootstage.h>
23 #include <asm/cache.h>
24 #include <u-boot/crc.h>
25 /* TODO: can we just include all these headers whether needed or not? */
26 #if defined(CONFIG_CMD_BEDBUG)
27 #include <bedbug/type.h>
34 #include <env_internal.h>
39 #if defined(CONFIG_CMD_KGDB)
45 #ifdef CONFIG_BITBANGMII
51 #include <onenand_uboot.h>
54 #include <status_led.h>
55 #include <stdio_dev.h>
59 #ifdef CONFIG_ADDR_MAP
62 #include <asm/sections.h>
64 #include <linux/compiler.h>
65 #include <linux/err.h>
66 #include <efi_loader.h>
68 #if defined(CONFIG_GPIO_HOG)
72 DECLARE_GLOBAL_DATA_PTR;
74 ulong monitor_flash_len;
76 __weak int board_flash_wp_on(void)
79 * Most flashes can't be detected when write protection is enabled,
80 * so provide a way to let U-Boot gracefully ignore write protected
86 __weak void cpu_secondary_init_r(void)
90 static int initr_secondary_cpu(void)
93 * after non-volatile devices & environment is setup and cpu code have
94 * another round to deal with any initialization that might require
95 * full access to the environment or loading of some image (firmware)
96 * from a non-volatile device
98 /* TODO: maybe define this for all archs? */
99 cpu_secondary_init_r();
104 static int initr_trace(void)
107 trace_init(gd->trace_buff, CONFIG_TRACE_BUFFER_SIZE);
113 static int initr_reloc(void)
115 /* tell others: relocation done */
116 gd->flags |= GD_FLG_RELOC | GD_FLG_FULL_MALLOC_INIT;
123 * Some of these functions are needed purely because the functions they
124 * call return void. If we change them to return 0, these stubs can go away.
126 static int initr_caches(void)
134 __weak int fixup_cpu(void)
139 static int initr_reloc_global_data(void)
142 monitor_flash_len = _end - __image_copy_start;
143 #elif defined(CONFIG_NDS32) || defined(CONFIG_RISCV)
144 monitor_flash_len = (ulong)&_end - (ulong)&_start;
145 #elif !defined(CONFIG_SANDBOX) && !defined(CONFIG_NIOS2)
146 monitor_flash_len = (ulong)&__init_end - gd->relocaddr;
148 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
150 * The gd->cpu pointer is set to an address in flash before relocation.
151 * We need to update it to point to the same CPU entry in RAM.
152 * TODO: why not just add gd->reloc_ofs?
154 gd->arch.cpu += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
157 * If we didn't know the cpu mask & # cores, we can save them of
158 * now rather than 'computing' them constantly
162 #ifdef CONFIG_SYS_RELOC_GD_ENV_ADDR
164 * Relocate the early env_addr pointer unless we know it is not inside
165 * the binary. Some systems need this and for the rest, it doesn't hurt.
167 gd->env_addr += gd->reloc_off;
169 #ifdef CONFIG_OF_EMBED
171 * The fdt_blob needs to be moved to new relocation address
172 * incase of FDT blob is embedded with in image
174 gd->fdt_blob += gd->reloc_off;
176 #ifdef CONFIG_EFI_LOADER
178 * On the ARM architecture gd is mapped to a fixed register (r9 or x18).
179 * As this register may be overwritten by an EFI payload we save it here
180 * and restore it on every callback entered.
184 efi_runtime_relocate(gd->relocaddr, NULL);
190 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_MIPS)
191 static int initr_trap(void)
194 * Setup trap handlers
196 #if defined(CONFIG_PPC)
197 trap_init(gd->relocaddr);
199 trap_init(CONFIG_SYS_SDRAM_BASE);
205 #ifdef CONFIG_ADDR_MAP
206 static int initr_addr_map(void)
215 static int initr_post_backlog(void)
217 post_output_backlog();
222 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
223 static int initr_unlock_ram_in_cache(void)
225 unlock_ram_in_cache(); /* it's time to unlock D-cache in e500 */
230 #ifdef CONFIG_PCI_ENDPOINT
231 static int initr_pci_ep(void)
240 static int initr_pci(void)
242 if (IS_ENABLED(CONFIG_PCI_INIT_R))
249 static int initr_barrier(void)
252 /* TODO: Can we not use dmb() macros for this? */
258 static int initr_malloc(void)
262 #if CONFIG_VAL(SYS_MALLOC_F_LEN)
263 debug("Pre-reloc malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr,
264 gd->malloc_ptr / 1024);
266 /* The malloc area is immediately below the monitor copy in DRAM */
268 * This value MUST match the value of gd->start_addr_sp in board_f.c:
269 * reserve_noncached().
271 malloc_start = gd->relocaddr - TOTAL_MALLOC_LEN;
272 mem_malloc_init((ulong)map_sysmem(malloc_start, TOTAL_MALLOC_LEN),
277 static int initr_console_record(void)
279 #if defined(CONFIG_CONSOLE_RECORD)
280 return console_record_init();
286 #ifdef CONFIG_SYS_NONCACHED_MEMORY
287 static int initr_noncached(void)
294 #ifdef CONFIG_OF_LIVE
295 static int initr_of_live(void)
299 bootstage_start(BOOTSTAGE_ID_ACCUM_OF_LIVE, "of_live");
300 ret = of_live_build(gd->fdt_blob, (struct device_node **)&gd->of_root);
301 bootstage_accum(BOOTSTAGE_ID_ACCUM_OF_LIVE);
310 static int initr_dm(void)
314 /* Save the pre-reloc driver model and start a new one */
315 gd->dm_root_f = gd->dm_root;
320 bootstage_start(BOOTSTAGE_ID_ACCUM_DM_R, "dm_r");
321 ret = dm_init_and_scan(false);
322 bootstage_accum(BOOTSTAGE_ID_ACCUM_DM_R);
330 static int initr_dm_devices(void)
334 if (IS_ENABLED(CONFIG_TIMER_EARLY)) {
335 ret = dm_timer_init();
343 static int initr_bootstage(void)
345 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
350 __weak int power_init_board(void)
355 static int initr_announce(void)
357 debug("Now running in RAM - U-Boot at: %08lx\n", gd->relocaddr);
361 #ifdef CONFIG_NEEDS_MANUAL_RELOC
362 static int initr_manual_reloc_cmdtable(void)
364 fixup_cmdtable(ll_entry_start(struct cmd_tbl, cmd),
365 ll_entry_count(struct cmd_tbl, cmd));
370 static int initr_binman(void)
372 if (!CONFIG_IS_ENABLED(BINMAN_FDT))
375 return binman_init();
378 #if defined(CONFIG_MTD_NOR_FLASH)
379 __weak int is_flash_available(void)
384 static int initr_flash(void)
386 ulong flash_size = 0;
387 struct bd_info *bd = gd->bd;
389 if (!is_flash_available())
394 if (board_flash_wp_on())
395 printf("Uninitialized - Write Protect On\n");
397 flash_size = flash_init();
399 print_size(flash_size, "");
400 #ifdef CONFIG_SYS_FLASH_CHECKSUM
402 * Compute and print flash CRC if flashchecksum is set to 'y'
404 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
406 if (env_get_yesno("flashchecksum") == 1) {
407 const uchar *flash_base = (const uchar *)CONFIG_SYS_FLASH_BASE;
409 printf(" CRC: %08X", crc32(0,
413 #endif /* CONFIG_SYS_FLASH_CHECKSUM */
416 /* update start of FLASH memory */
417 #ifdef CONFIG_SYS_FLASH_BASE
418 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
420 /* size of FLASH memory (final value) */
421 bd->bi_flashsize = flash_size;
423 #if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
424 /* Make a update of the Memctrl. */
425 update_flash_size(flash_size);
428 #if defined(CONFIG_OXC) || defined(CONFIG_RMU)
429 /* flash mapped at end of memory map */
430 bd->bi_flashoffset = CONFIG_SYS_TEXT_BASE + flash_size;
431 #elif CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
432 bd->bi_flashoffset = monitor_flash_len; /* reserved area for monitor */
438 #ifdef CONFIG_CMD_NAND
439 /* go init the NAND */
440 static int initr_nand(void)
444 printf("%lu MiB\n", nand_size() / 1024);
449 #if defined(CONFIG_CMD_ONENAND)
450 /* go init the NAND */
451 static int initr_onenand(void)
460 static int initr_mmc(void)
463 mmc_initialize(gd->bd);
469 * Tell if it's OK to load the environment early in boot.
471 * If CONFIG_OF_CONTROL is defined, we'll check with the FDT to see
472 * if this is OK (defaulting to saying it's OK).
474 * NOTE: Loading the environment early can be a bad idea if security is
475 * important, since no verification is done on the environment.
477 * @return 0 if environment should not be loaded, !=0 if it is ok to load
479 static int should_load_env(void)
481 if (IS_ENABLED(CONFIG_OF_CONTROL))
482 return fdtdec_get_config_int(gd->fdt_blob,
483 "load-environment", 1);
485 if (IS_ENABLED(CONFIG_DELAY_ENVIRONMENT))
491 static int initr_env(void)
493 /* initialize environment */
494 if (should_load_env())
497 env_set_default(NULL, 0);
499 if (IS_ENABLED(CONFIG_OF_CONTROL))
500 env_set_hex("fdtcontroladdr",
501 (unsigned long)map_to_sysmem(gd->fdt_blob));
503 /* Initialize from environment */
504 image_load_addr = env_get_ulong("loadaddr", 16, image_load_addr);
509 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
510 static int initr_malloc_bootparams(void)
512 gd->bd->bi_boot_params = (ulong)malloc(CONFIG_SYS_BOOTPARAMS_LEN);
513 if (!gd->bd->bi_boot_params) {
514 puts("WARNING: Cannot allocate space for boot parameters\n");
521 static int initr_jumptable(void)
527 #if defined(CONFIG_API)
528 static int initr_api(void)
536 #ifdef CONFIG_CMD_NET
537 static int initr_ethaddr(void)
539 struct bd_info *bd = gd->bd;
541 /* kept around for legacy kernels only ... ignore the next section */
542 eth_env_get_enetaddr("ethaddr", bd->bi_enetaddr);
546 #endif /* CONFIG_CMD_NET */
548 #ifdef CONFIG_CMD_KGDB
549 static int initr_kgdb(void)
557 #if defined(CONFIG_LED_STATUS)
558 static int initr_status_led(void)
560 #if defined(CONFIG_LED_STATUS_BOOT)
561 status_led_set(CONFIG_LED_STATUS_BOOT, CONFIG_LED_STATUS_BLINKING);
569 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
570 static int initr_scsi(void)
580 #ifdef CONFIG_BITBANGMII
581 static int initr_bbmii(void)
588 #ifdef CONFIG_CMD_NET
589 static int initr_net(void)
593 #if defined(CONFIG_RESET_PHY_R)
594 debug("Reset Ethernet PHY\n");
602 static int initr_post(void)
604 post_run(NULL, POST_RAM | post_bootmode_get(0));
609 #if defined(CONFIG_IDE) && !defined(CONFIG_BLK)
610 static int initr_ide(void)
613 #if defined(CONFIG_START_IDE)
614 if (board_start_ide())
623 #if defined(CONFIG_PRAM)
625 * Export available size of memory for Linux, taking into account the
626 * protected RAM at top of memory
633 pram = env_get_ulong("pram", 10, CONFIG_PRAM);
634 sprintf(memsz, "%ldk", (long int)((gd->ram_size / 1024) - pram));
635 env_set("mem", memsz);
641 static int run_main_loop(void)
643 #ifdef CONFIG_SANDBOX
644 sandbox_main_loop_init();
646 /* main_loop() can return to retry autoboot, if so just run it again */
653 * We 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
683 #ifdef CONFIG_OF_LIVE
689 #if defined(CONFIG_ARM) || defined(CONFIG_NDS32) || defined(CONFIG_RISCV) || \
690 defined(CONFIG_SANDBOX)
691 board_init, /* Setup chipselects */
694 * TODO: printing of the clock inforamtion of the board is now
695 * implemented as part of bdinfo command. Currently only support for
696 * davinci SOC's is added. Remove this check once all the board
700 set_cpu_clk_info, /* Setup clock information */
702 #ifdef CONFIG_EFI_LOADER
706 #ifdef CONFIG_FSP_VERSION2
713 #if CONFIG_IS_ENABLED(WDT)
716 INIT_FUNC_WATCHDOG_RESET
717 #ifdef CONFIG_NEEDS_MANUAL_RELOC
718 initr_manual_reloc_cmdtable,
720 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_MIPS)
723 #ifdef CONFIG_ADDR_MAP
726 #if defined(CONFIG_BOARD_EARLY_INIT_R)
729 INIT_FUNC_WATCHDOG_RESET
733 INIT_FUNC_WATCHDOG_RESET
734 #if defined(CONFIG_PCI) && defined(CONFIG_SYS_EARLY_PCI_INIT)
736 * Do early PCI configuration _before_ the flash gets initialised,
737 * because PCU resources are crucial for flash access on some boards.
741 #ifdef CONFIG_ARCH_EARLY_INIT_R
745 #ifdef CONFIG_MTD_NOR_FLASH
748 INIT_FUNC_WATCHDOG_RESET
749 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_X86)
750 /* initialize higher level parts of CPU like time base and timers */
753 #ifdef CONFIG_CMD_NAND
756 #ifdef CONFIG_CMD_ONENAND
763 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
764 initr_malloc_bootparams,
766 INIT_FUNC_WATCHDOG_RESET
768 #if defined(CONFIG_ID_EEPROM) || defined(CONFIG_SYS_I2C_MAC_OFFSET)
769 mac_read_from_eeprom,
771 INIT_FUNC_WATCHDOG_RESET
772 #if defined(CONFIG_PCI) && !defined(CONFIG_SYS_EARLY_PCI_INIT)
774 * Do pci configuration
783 console_init_r, /* fully init console as a device */
784 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
788 #ifdef CONFIG_ARCH_MISC_INIT
789 arch_misc_init, /* miscellaneous arch-dependent init */
791 #ifdef CONFIG_MISC_INIT_R
792 misc_init_r, /* miscellaneous platform-dependent init */
794 INIT_FUNC_WATCHDOG_RESET
795 #ifdef CONFIG_CMD_KGDB
799 #if defined(CONFIG_MICROBLAZE) || defined(CONFIG_M68K)
800 timer_init, /* initialize timer */
802 #if defined(CONFIG_LED_STATUS)
805 /* PPC has a udelay(20) here dating from 2002. Why? */
806 #ifdef CONFIG_CMD_NET
809 #if defined(CONFIG_GPIO_HOG)
812 #ifdef CONFIG_BOARD_LATE_INIT
815 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
816 INIT_FUNC_WATCHDOG_RESET
819 #ifdef CONFIG_BITBANGMII
822 #ifdef CONFIG_PCI_ENDPOINT
825 #ifdef CONFIG_CMD_NET
826 INIT_FUNC_WATCHDOG_RESET
832 #if defined(CONFIG_IDE) && !defined(CONFIG_BLK)
835 #ifdef CONFIG_LAST_STAGE_INIT
836 INIT_FUNC_WATCHDOG_RESET
838 * Some parts can be only initialized if all others (like
839 * Interrupts) are up and running (i.e. the PC-style ISA
844 #ifdef CONFIG_CMD_BEDBUG
845 INIT_FUNC_WATCHDOG_RESET
848 #if defined(CONFIG_PRAM)
851 #if defined(CONFIG_NEEDS_MANUAL_RELOC) && defined(CONFIG_BLOCK_CACHE)
857 void board_init_r(gd_t *new_gd, ulong dest_addr)
860 * Set up the new global data pointer. So far only x86 does this
862 * TODO(sjg@chromium.org): Consider doing this for all archs, or
863 * dropping the new_gd parameter.
865 #if CONFIG_IS_ENABLED(X86_64)
866 arch_setup_gd(new_gd);
869 #ifdef CONFIG_NEEDS_MANUAL_RELOC
873 #if !defined(CONFIG_X86) && !defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
876 gd->flags &= ~GD_FLG_LOG_READY;
878 #ifdef CONFIG_NEEDS_MANUAL_RELOC
879 for (i = 0; i < ARRAY_SIZE(init_sequence_r); i++)
880 init_sequence_r[i] += gd->reloc_off;
883 if (initcall_run_list(init_sequence_r))
886 /* NOTREACHED - run_main_loop() does not return */