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>
21 #include <asm/cache.h>
22 #include <u-boot/crc.h>
23 /* TODO: can we just include all these headers whether needed or not? */
24 #if defined(CONFIG_CMD_BEDBUG)
25 #include <bedbug/type.h>
32 #include <env_internal.h>
37 #if defined(CONFIG_CMD_KGDB)
43 #ifdef CONFIG_BITBANGMII
49 #include <onenand_uboot.h>
52 #include <status_led.h>
53 #include <stdio_dev.h>
57 #ifdef CONFIG_ADDR_MAP
60 #include <asm/sections.h>
62 #include <linux/compiler.h>
63 #include <linux/err.h>
64 #include <efi_loader.h>
66 #if defined(CONFIG_GPIO_HOG)
70 DECLARE_GLOBAL_DATA_PTR;
72 ulong monitor_flash_len;
74 __weak int board_flash_wp_on(void)
77 * Most flashes can't be detected when write protection is enabled,
78 * so provide a way to let U-Boot gracefully ignore write protected
84 __weak void cpu_secondary_init_r(void)
88 static int initr_secondary_cpu(void)
91 * after non-volatile devices & environment is setup and cpu code have
92 * another round to deal with any initialization that might require
93 * full access to the environment or loading of some image (firmware)
94 * from a non-volatile device
96 /* TODO: maybe define this for all archs? */
97 cpu_secondary_init_r();
102 static int initr_trace(void)
105 trace_init(gd->trace_buff, CONFIG_TRACE_BUFFER_SIZE);
111 static int initr_reloc(void)
113 /* tell others: relocation done */
114 gd->flags |= GD_FLG_RELOC | GD_FLG_FULL_MALLOC_INIT;
121 * Some of these functions are needed purely because the functions they
122 * call return void. If we change them to return 0, these stubs can go away.
124 static int initr_caches(void)
132 __weak int fixup_cpu(void)
137 static int initr_reloc_global_data(void)
140 monitor_flash_len = _end - __image_copy_start;
141 #elif defined(CONFIG_NDS32) || defined(CONFIG_RISCV)
142 monitor_flash_len = (ulong)&_end - (ulong)&_start;
143 #elif !defined(CONFIG_SANDBOX) && !defined(CONFIG_NIOS2)
144 monitor_flash_len = (ulong)&__init_end - gd->relocaddr;
146 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
148 * The gd->cpu pointer is set to an address in flash before relocation.
149 * We need to update it to point to the same CPU entry in RAM.
150 * TODO: why not just add gd->reloc_ofs?
152 gd->arch.cpu += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
155 * If we didn't know the cpu mask & # cores, we can save them of
156 * now rather than 'computing' them constantly
160 #ifdef CONFIG_SYS_RELOC_GD_ENV_ADDR
162 * Relocate the early env_addr pointer unless we know it is not inside
163 * the binary. Some systems need this and for the rest, it doesn't hurt.
165 gd->env_addr += gd->reloc_off;
167 #ifdef CONFIG_OF_EMBED
169 * The fdt_blob needs to be moved to new relocation address
170 * incase of FDT blob is embedded with in image
172 gd->fdt_blob += gd->reloc_off;
174 #ifdef CONFIG_EFI_LOADER
176 * On the ARM architecture gd is mapped to a fixed register (r9 or x18).
177 * As this register may be overwritten by an EFI payload we save it here
178 * and restore it on every callback entered.
182 efi_runtime_relocate(gd->relocaddr, NULL);
188 static int initr_serial(void)
194 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_MIPS)
195 static int initr_trap(void)
198 * Setup trap handlers
200 #if defined(CONFIG_PPC)
201 trap_init(gd->relocaddr);
203 trap_init(CONFIG_SYS_SDRAM_BASE);
209 #ifdef CONFIG_ADDR_MAP
210 static int initr_addr_map(void)
219 static int initr_post_backlog(void)
221 post_output_backlog();
226 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
227 static int initr_unlock_ram_in_cache(void)
229 unlock_ram_in_cache(); /* it's time to unlock D-cache in e500 */
235 static int initr_pci(void)
237 if (IS_ENABLED(CONFIG_PCI_INIT_R))
244 static int initr_barrier(void)
247 /* TODO: Can we not use dmb() macros for this? */
253 static int initr_malloc(void)
257 #if CONFIG_VAL(SYS_MALLOC_F_LEN)
258 debug("Pre-reloc malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr,
259 gd->malloc_ptr / 1024);
261 /* The malloc area is immediately below the monitor copy in DRAM */
263 * This value MUST match the value of gd->start_addr_sp in board_f.c:
264 * reserve_noncached().
266 malloc_start = gd->relocaddr - TOTAL_MALLOC_LEN;
267 mem_malloc_init((ulong)map_sysmem(malloc_start, TOTAL_MALLOC_LEN),
272 static int initr_console_record(void)
274 #if defined(CONFIG_CONSOLE_RECORD)
275 return console_record_init();
281 #ifdef CONFIG_SYS_NONCACHED_MEMORY
282 static int initr_noncached(void)
289 #ifdef CONFIG_OF_LIVE
290 static int initr_of_live(void)
294 bootstage_start(BOOTSTAGE_ID_ACCUM_OF_LIVE, "of_live");
295 ret = of_live_build(gd->fdt_blob, (struct device_node **)&gd->of_root);
296 bootstage_accum(BOOTSTAGE_ID_ACCUM_OF_LIVE);
305 static int initr_dm(void)
309 /* Save the pre-reloc driver model and start a new one */
310 gd->dm_root_f = gd->dm_root;
315 bootstage_start(BOOTSTAGE_ID_ACCUM_DM_R, "dm_r");
316 ret = dm_init_and_scan(false);
317 bootstage_accum(BOOTSTAGE_ID_ACCUM_DM_R);
325 static int initr_dm_devices(void)
329 if (IS_ENABLED(CONFIG_TIMER_EARLY)) {
330 ret = dm_timer_init();
338 static int initr_bootstage(void)
340 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
345 __weak int power_init_board(void)
350 static int initr_announce(void)
352 debug("Now running in RAM - U-Boot at: %08lx\n", gd->relocaddr);
356 #ifdef CONFIG_NEEDS_MANUAL_RELOC
357 static int initr_manual_reloc_cmdtable(void)
359 fixup_cmdtable(ll_entry_start(cmd_tbl_t, cmd),
360 ll_entry_count(cmd_tbl_t, cmd));
365 static int initr_binman(void)
367 if (!CONFIG_IS_ENABLED(BINMAN_FDT))
370 return binman_init();
373 #if defined(CONFIG_MTD_NOR_FLASH)
374 static int initr_flash(void)
376 ulong flash_size = 0;
381 if (board_flash_wp_on())
382 printf("Uninitialized - Write Protect On\n");
384 flash_size = flash_init();
386 print_size(flash_size, "");
387 #ifdef CONFIG_SYS_FLASH_CHECKSUM
389 * Compute and print flash CRC if flashchecksum is set to 'y'
391 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
393 if (env_get_yesno("flashchecksum") == 1) {
394 const uchar *flash_base = (const uchar *)CONFIG_SYS_FLASH_BASE;
396 printf(" CRC: %08X", crc32(0,
400 #endif /* CONFIG_SYS_FLASH_CHECKSUM */
403 /* update start of FLASH memory */
404 #ifdef CONFIG_SYS_FLASH_BASE
405 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
407 /* size of FLASH memory (final value) */
408 bd->bi_flashsize = flash_size;
410 #if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
411 /* Make a update of the Memctrl. */
412 update_flash_size(flash_size);
415 #if defined(CONFIG_OXC) || defined(CONFIG_RMU)
416 /* flash mapped at end of memory map */
417 bd->bi_flashoffset = CONFIG_SYS_TEXT_BASE + flash_size;
418 #elif CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
419 bd->bi_flashoffset = monitor_flash_len; /* reserved area for monitor */
425 #ifdef CONFIG_CMD_NAND
426 /* go init the NAND */
427 static int initr_nand(void)
431 printf("%lu MiB\n", nand_size() / 1024);
436 #if defined(CONFIG_CMD_ONENAND)
437 /* go init the NAND */
438 static int initr_onenand(void)
447 static int initr_mmc(void)
450 mmc_initialize(gd->bd);
456 * Tell if it's OK to load the environment early in boot.
458 * If CONFIG_OF_CONTROL is defined, we'll check with the FDT to see
459 * if this is OK (defaulting to saying it's OK).
461 * NOTE: Loading the environment early can be a bad idea if security is
462 * important, since no verification is done on the environment.
464 * @return 0 if environment should not be loaded, !=0 if it is ok to load
466 static int should_load_env(void)
468 if (IS_ENABLED(CONFIG_OF_CONTROL))
469 return fdtdec_get_config_int(gd->fdt_blob,
470 "load-environment", 1);
472 if (IS_ENABLED(CONFIG_DELAY_ENVIRONMENT))
478 static int initr_env(void)
480 /* initialize environment */
481 if (should_load_env())
484 env_set_default(NULL, 0);
486 if (IS_ENABLED(CONFIG_OF_CONTROL))
487 env_set_hex("fdtcontroladdr",
488 (unsigned long)map_to_sysmem(gd->fdt_blob));
490 /* Initialize from environment */
491 image_load_addr = env_get_ulong("loadaddr", 16, image_load_addr);
496 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
497 static int initr_malloc_bootparams(void)
499 gd->bd->bi_boot_params = (ulong)malloc(CONFIG_SYS_BOOTPARAMS_LEN);
500 if (!gd->bd->bi_boot_params) {
501 puts("WARNING: Cannot allocate space for boot parameters\n");
508 static int initr_jumptable(void)
514 #if defined(CONFIG_API)
515 static int initr_api(void)
523 #ifdef CONFIG_CMD_NET
524 static int initr_ethaddr(void)
528 /* kept around for legacy kernels only ... ignore the next section */
529 eth_env_get_enetaddr("ethaddr", bd->bi_enetaddr);
530 #ifdef CONFIG_HAS_ETH1
531 eth_env_get_enetaddr("eth1addr", bd->bi_enet1addr);
533 #ifdef CONFIG_HAS_ETH2
534 eth_env_get_enetaddr("eth2addr", bd->bi_enet2addr);
536 #ifdef CONFIG_HAS_ETH3
537 eth_env_get_enetaddr("eth3addr", bd->bi_enet3addr);
539 #ifdef CONFIG_HAS_ETH4
540 eth_env_get_enetaddr("eth4addr", bd->bi_enet4addr);
542 #ifdef CONFIG_HAS_ETH5
543 eth_env_get_enetaddr("eth5addr", bd->bi_enet5addr);
547 #endif /* CONFIG_CMD_NET */
549 #ifdef CONFIG_CMD_KGDB
550 static int initr_kgdb(void)
558 #if defined(CONFIG_LED_STATUS)
559 static int initr_status_led(void)
561 #if defined(CONFIG_LED_STATUS_BOOT)
562 status_led_set(CONFIG_LED_STATUS_BOOT, CONFIG_LED_STATUS_BLINKING);
570 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
571 static int initr_scsi(void)
581 #ifdef CONFIG_BITBANGMII
582 static int initr_bbmii(void)
589 #ifdef CONFIG_CMD_NET
590 static int initr_net(void)
594 #if defined(CONFIG_RESET_PHY_R)
595 debug("Reset Ethernet PHY\n");
603 static int initr_post(void)
605 post_run(NULL, POST_RAM | post_bootmode_get(0));
610 #if defined(CONFIG_IDE) && !defined(CONFIG_BLK)
611 static int initr_ide(void)
614 #if defined(CONFIG_START_IDE)
615 if (board_start_ide())
624 #if defined(CONFIG_PRAM)
626 * Export available size of memory for Linux, taking into account the
627 * protected RAM at top of memory
634 pram = env_get_ulong("pram", 10, CONFIG_PRAM);
635 sprintf(memsz, "%ldk", (long int)((gd->ram_size / 1024) - pram));
636 env_set("mem", memsz);
642 static int run_main_loop(void)
644 #ifdef CONFIG_SANDBOX
645 sandbox_main_loop_init();
647 /* main_loop() can return to retry autoboot, if so just run it again */
654 * We hope to remove most of the driver-related init and do it if/when
655 * the driver is later used.
657 * TODO: perhaps reset the watchdog in the initcall function after each call?
659 static init_fnc_t init_sequence_r[] = {
662 /* TODO: could x86/PPC have this also perhaps? */
665 /* Note: For Freescale LS2 SoCs, new MMU table is created in DDR.
666 * A temporary mapping of IFC high region is since removed,
667 * so environmental variables in NOR flash is not available
668 * until board_init() is called below to remap IFC to high
672 initr_reloc_global_data,
673 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
674 initr_unlock_ram_in_cache,
679 initr_bootstage, /* Needs malloc() but has its own timer */
680 initr_console_record,
681 #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
707 #ifdef CONFIG_FSP_VERSION2
714 #if CONFIG_IS_ENABLED(WDT)
717 INIT_FUNC_WATCHDOG_RESET
718 #ifdef CONFIG_NEEDS_MANUAL_RELOC
719 initr_manual_reloc_cmdtable,
721 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_MIPS)
724 #ifdef CONFIG_ADDR_MAP
727 #if defined(CONFIG_BOARD_EARLY_INIT_R)
730 INIT_FUNC_WATCHDOG_RESET
734 INIT_FUNC_WATCHDOG_RESET
735 #if defined(CONFIG_PCI) && defined(CONFIG_SYS_EARLY_PCI_INIT)
737 * Do early PCI configuration _before_ the flash gets initialised,
738 * because PCU resources are crucial for flash access on some boards.
742 #ifdef CONFIG_ARCH_EARLY_INIT_R
746 #ifdef CONFIG_MTD_NOR_FLASH
749 INIT_FUNC_WATCHDOG_RESET
750 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_X86)
751 /* initialize higher level parts of CPU like time base and timers */
754 #ifdef CONFIG_CMD_NAND
757 #ifdef CONFIG_CMD_ONENAND
764 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
765 initr_malloc_bootparams,
767 INIT_FUNC_WATCHDOG_RESET
769 #if defined(CONFIG_ID_EEPROM) || defined(CONFIG_SYS_I2C_MAC_OFFSET)
770 mac_read_from_eeprom,
772 INIT_FUNC_WATCHDOG_RESET
773 #if defined(CONFIG_PCI) && !defined(CONFIG_SYS_EARLY_PCI_INIT)
775 * Do pci configuration
784 console_init_r, /* fully init console as a device */
785 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
789 #ifdef CONFIG_ARCH_MISC_INIT
790 arch_misc_init, /* miscellaneous arch-dependent init */
792 #ifdef CONFIG_MISC_INIT_R
793 misc_init_r, /* miscellaneous platform-dependent init */
795 INIT_FUNC_WATCHDOG_RESET
796 #ifdef CONFIG_CMD_KGDB
800 #if defined(CONFIG_MICROBLAZE) || defined(CONFIG_M68K)
801 timer_init, /* initialize timer */
803 #if defined(CONFIG_LED_STATUS)
806 /* PPC has a udelay(20) here dating from 2002. Why? */
807 #ifdef CONFIG_CMD_NET
810 #if defined(CONFIG_GPIO_HOG)
813 #ifdef CONFIG_BOARD_LATE_INIT
816 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
817 INIT_FUNC_WATCHDOG_RESET
820 #ifdef CONFIG_BITBANGMII
823 #ifdef CONFIG_CMD_NET
824 INIT_FUNC_WATCHDOG_RESET
830 #if defined(CONFIG_IDE) && !defined(CONFIG_BLK)
833 #ifdef CONFIG_LAST_STAGE_INIT
834 INIT_FUNC_WATCHDOG_RESET
836 * Some parts can be only initialized if all others (like
837 * Interrupts) are up and running (i.e. the PC-style ISA
842 #ifdef CONFIG_CMD_BEDBUG
843 INIT_FUNC_WATCHDOG_RESET
846 #if defined(CONFIG_PRAM)
849 #if defined(CONFIG_M68K) && defined(CONFIG_BLOCK_CACHE)
855 void board_init_r(gd_t *new_gd, ulong dest_addr)
858 * Set up the new global data pointer. So far only x86 does this
860 * TODO(sjg@chromium.org): Consider doing this for all archs, or
861 * dropping the new_gd parameter.
863 #if CONFIG_IS_ENABLED(X86_64)
864 arch_setup_gd(new_gd);
867 #ifdef CONFIG_NEEDS_MANUAL_RELOC
871 #if !defined(CONFIG_X86) && !defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
874 gd->flags &= ~GD_FLG_LOG_READY;
876 #ifdef CONFIG_NEEDS_MANUAL_RELOC
877 for (i = 0; i < ARRAY_SIZE(init_sequence_r); i++)
878 init_sequence_r[i] += gd->reloc_off;
881 if (initcall_run_list(init_sequence_r))
884 /* NOTREACHED - run_main_loop() does not return */