2 * Copyright (c) 2011 The Chromium OS Authors.
3 * (C) Copyright 2002-2006
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
7 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
8 * Marius Groeger <mgroeger@sysgo.de>
10 * SPDX-License-Identifier: GPL-2.0+
15 /* TODO: can we just include all these headers whether needed or not? */
16 #if defined(CONFIG_CMD_BEDBUG)
17 #include <bedbug/type.h>
22 #include <environment.h>
26 #if defined(CONFIG_CMD_KGDB)
31 #ifdef CONFIG_BITBANGMII
37 #include <onenand_uboot.h>
41 #include <stdio_dev.h>
45 #ifdef CONFIG_ADDR_MAP
48 #include <asm/sections.h>
50 #include <linux/compiler.h>
51 #include <linux/err.h>
52 #include <efi_loader.h>
54 DECLARE_GLOBAL_DATA_PTR;
56 ulong monitor_flash_len;
58 __weak int board_flash_wp_on(void)
61 * Most flashes can't be detected when write protection is enabled,
62 * so provide a way to let U-Boot gracefully ignore write protected
68 __weak void cpu_secondary_init_r(void)
72 static int initr_secondary_cpu(void)
75 * after non-volatile devices & environment is setup and cpu code have
76 * another round to deal with any initialization that might require
77 * full access to the environment or loading of some image (firmware)
78 * from a non-volatile device
80 /* TODO: maybe define this for all archs? */
81 cpu_secondary_init_r();
86 static int initr_trace(void)
89 trace_init(gd->trace_buff, CONFIG_TRACE_BUFFER_SIZE);
95 static int initr_reloc(void)
97 /* tell others: relocation done */
98 gd->flags |= GD_FLG_RELOC | GD_FLG_FULL_MALLOC_INIT;
105 * Some of these functions are needed purely because the functions they
106 * call return void. If we change them to return 0, these stubs can go away.
108 static int initr_caches(void)
116 __weak int fixup_cpu(void)
121 static int initr_reloc_global_data(void)
124 monitor_flash_len = _end - __image_copy_start;
125 #elif defined(CONFIG_NDS32) || defined(CONFIG_RISCV)
126 monitor_flash_len = (ulong)&_end - (ulong)&_start;
127 #elif !defined(CONFIG_SANDBOX) && !defined(CONFIG_NIOS2)
128 monitor_flash_len = (ulong)&__init_end - gd->relocaddr;
130 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
132 * The gd->cpu pointer is set to an address in flash before relocation.
133 * We need to update it to point to the same CPU entry in RAM.
134 * TODO: why not just add gd->reloc_ofs?
136 gd->arch.cpu += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
139 * If we didn't know the cpu mask & # cores, we can save them of
140 * now rather than 'computing' them constantly
144 #ifdef CONFIG_SYS_EXTRA_ENV_RELOC
146 * Some systems need to relocate the env_addr pointer early because the
147 * location it points to will get invalidated before env_relocate is
148 * called. One example is on systems that might use a L2 or L3 cache
149 * in SRAM mode and initialize that cache from SRAM mode back to being
150 * a cache in cpu_init_r.
152 gd->env_addr += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
154 #ifdef CONFIG_OF_EMBED
156 * The fdt_blob needs to be moved to new relocation address
157 * incase of FDT blob is embedded with in image
159 gd->fdt_blob += gd->reloc_off;
161 #ifdef CONFIG_EFI_LOADER
162 efi_runtime_relocate(gd->relocaddr, NULL);
168 static int initr_serial(void)
174 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_MIPS)
175 static int initr_trap(void)
178 * Setup trap handlers
180 #if defined(CONFIG_PPC)
181 trap_init(gd->relocaddr);
183 trap_init(CONFIG_SYS_SDRAM_BASE);
189 #ifdef CONFIG_ADDR_MAP
190 static int initr_addr_map(void)
199 static int initr_post_backlog(void)
201 post_output_backlog();
206 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
207 static int initr_unlock_ram_in_cache(void)
209 unlock_ram_in_cache(); /* it's time to unlock D-cache in e500 */
215 static int initr_pci(void)
217 #ifndef CONFIG_DM_PCI
225 static int initr_barrier(void)
228 /* TODO: Can we not use dmb() macros for this? */
234 static int initr_malloc(void)
238 #if CONFIG_VAL(SYS_MALLOC_F_LEN)
239 debug("Pre-reloc malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr,
240 gd->malloc_ptr / 1024);
242 /* The malloc area is immediately below the monitor copy in DRAM */
243 malloc_start = gd->relocaddr - TOTAL_MALLOC_LEN;
244 mem_malloc_init((ulong)map_sysmem(malloc_start, TOTAL_MALLOC_LEN),
249 static int initr_console_record(void)
251 #if defined(CONFIG_CONSOLE_RECORD)
252 return console_record_init();
258 #ifdef CONFIG_SYS_NONCACHED_MEMORY
259 static int initr_noncached(void)
266 #ifdef CONFIG_OF_LIVE
267 static int initr_of_live(void)
271 bootstage_start(BOOTSTAGE_ID_ACCUM_OF_LIVE, "of_live");
272 ret = of_live_build(gd->fdt_blob, (struct device_node **)&gd->of_root);
273 bootstage_accum(BOOTSTAGE_ID_ACCUM_OF_LIVE);
282 static int initr_dm(void)
286 /* Save the pre-reloc driver model and start a new one */
287 gd->dm_root_f = gd->dm_root;
292 bootstage_start(BOOTSTATE_ID_ACCUM_DM_R, "dm_r");
293 ret = dm_init_and_scan(false);
294 bootstage_accum(BOOTSTATE_ID_ACCUM_DM_R);
297 #ifdef CONFIG_TIMER_EARLY
298 ret = dm_timer_init();
307 static int initr_bootstage(void)
309 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
314 __weak int power_init_board(void)
319 static int initr_announce(void)
321 debug("Now running in RAM - U-Boot at: %08lx\n", gd->relocaddr);
325 #ifdef CONFIG_NEEDS_MANUAL_RELOC
326 static int initr_manual_reloc_cmdtable(void)
328 fixup_cmdtable(ll_entry_start(cmd_tbl_t, cmd),
329 ll_entry_count(cmd_tbl_t, cmd));
334 #if defined(CONFIG_MTD_NOR_FLASH)
335 static int initr_flash(void)
337 ulong flash_size = 0;
342 if (board_flash_wp_on())
343 printf("Uninitialized - Write Protect On\n");
345 flash_size = flash_init();
347 print_size(flash_size, "");
348 #ifdef CONFIG_SYS_FLASH_CHECKSUM
350 * Compute and print flash CRC if flashchecksum is set to 'y'
352 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
354 if (env_get_yesno("flashchecksum") == 1) {
355 const uchar *flash_base = (const uchar *)CONFIG_SYS_FLASH_BASE;
357 printf(" CRC: %08X", crc32(0,
361 #endif /* CONFIG_SYS_FLASH_CHECKSUM */
364 /* update start of FLASH memory */
365 #ifdef CONFIG_SYS_FLASH_BASE
366 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
368 /* size of FLASH memory (final value) */
369 bd->bi_flashsize = flash_size;
371 #if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
372 /* Make a update of the Memctrl. */
373 update_flash_size(flash_size);
376 #if defined(CONFIG_OXC) || defined(CONFIG_RMU)
377 /* flash mapped at end of memory map */
378 bd->bi_flashoffset = CONFIG_SYS_TEXT_BASE + flash_size;
379 #elif CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
380 bd->bi_flashoffset = monitor_flash_len; /* reserved area for monitor */
386 #if defined(CONFIG_PPC) && !defined(CONFIG_DM_SPI)
387 static int initr_spi(void)
389 /* PPC does this here */
391 #if !defined(CONFIG_ENV_IS_IN_EEPROM)
400 #ifdef CONFIG_CMD_NAND
401 /* go init the NAND */
402 static int initr_nand(void)
406 printf("%lu MiB\n", nand_size() / 1024);
411 #if defined(CONFIG_CMD_ONENAND)
412 /* go init the NAND */
413 static int initr_onenand(void)
422 static int initr_mmc(void)
425 mmc_initialize(gd->bd);
431 * Tell if it's OK to load the environment early in boot.
433 * If CONFIG_OF_CONTROL is defined, we'll check with the FDT to see
434 * if this is OK (defaulting to saying it's OK).
436 * NOTE: Loading the environment early can be a bad idea if security is
437 * important, since no verification is done on the environment.
439 * @return 0 if environment should not be loaded, !=0 if it is ok to load
441 static int should_load_env(void)
443 #ifdef CONFIG_OF_CONTROL
444 return fdtdec_get_config_int(gd->fdt_blob, "load-environment", 1);
445 #elif defined CONFIG_DELAY_ENVIRONMENT
452 static int initr_env(void)
454 /* initialize environment */
455 if (should_load_env())
458 set_default_env(NULL);
459 #ifdef CONFIG_OF_CONTROL
460 env_set_addr("fdtcontroladdr", 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)
562 #ifdef CONFIG_BITBANGMII
563 static int initr_bbmii(void)
570 #ifdef CONFIG_CMD_NET
571 static int initr_net(void)
575 #if defined(CONFIG_RESET_PHY_R)
576 debug("Reset Ethernet PHY\n");
584 static int initr_post(void)
586 post_run(NULL, POST_RAM | post_bootmode_get(0));
591 #if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_IDE)
592 static int initr_pcmcia(void)
600 #if defined(CONFIG_IDE)
601 static int initr_ide(void)
604 #if defined(CONFIG_START_IDE)
605 if (board_start_ide())
614 #if defined(CONFIG_PRAM)
616 * Export available size of memory for Linux, taking into account the
617 * protected RAM at top of memory
624 pram = env_get_ulong("pram", 10, CONFIG_PRAM);
625 sprintf(memsz, "%ldk", (long int)((gd->ram_size / 1024) - pram));
626 env_set("mem", memsz);
632 #ifdef CONFIG_CMD_BEDBUG
633 static int initr_bedbug(void)
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 * Over time we hope to remove these functions with code fragments and
654 * stub functions, and instead call the relevant function directly.
656 * We also hope to remove most of the driver-related init and do it if/when
657 * the driver is later used.
659 * TODO: perhaps reset the watchdog in the initcall function after each call?
661 static init_fnc_t init_sequence_r[] = {
664 /* TODO: could x86/PPC have this also perhaps? */
667 /* Note: For Freescale LS2 SoCs, new MMU table is created in DDR.
668 * A temporary mapping of IFC high region is since removed,
669 * so environmental variables in NOR flash is not available
670 * until board_init() is called below to remap IFC to high
674 initr_reloc_global_data,
675 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
676 initr_unlock_ram_in_cache,
681 initr_bootstage, /* Needs malloc() but has its own timer */
682 initr_console_record,
683 #ifdef CONFIG_SYS_NONCACHED_MEMORY
687 #ifdef CONFIG_OF_LIVE
693 #if defined(CONFIG_ARM) || defined(CONFIG_NDS32) || defined(CONFIG_RISCV)
694 board_init, /* Setup chipselects */
697 * TODO: printing of the clock inforamtion of the board is now
698 * implemented as part of bdinfo command. Currently only support for
699 * davinci SOC's is added. Remove this check once all the board
703 set_cpu_clk_info, /* Setup clock information */
705 #ifdef CONFIG_EFI_LOADER
711 INIT_FUNC_WATCHDOG_RESET
712 #ifdef CONFIG_NEEDS_MANUAL_RELOC
713 initr_manual_reloc_cmdtable,
715 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_MIPS)
718 #ifdef CONFIG_ADDR_MAP
721 #if defined(CONFIG_BOARD_EARLY_INIT_R)
724 INIT_FUNC_WATCHDOG_RESET
728 INIT_FUNC_WATCHDOG_RESET
729 #if defined(CONFIG_PCI) && defined(CONFIG_SYS_EARLY_PCI_INIT)
731 * Do early PCI configuration _before_ the flash gets initialised,
732 * because PCU resources are crucial for flash access on some boards.
736 #ifdef CONFIG_ARCH_EARLY_INIT_R
740 #ifdef CONFIG_MTD_NOR_FLASH
743 INIT_FUNC_WATCHDOG_RESET
744 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_X86)
745 /* initialize higher level parts of CPU like time base and timers */
751 #ifdef CONFIG_CMD_NAND
754 #ifdef CONFIG_CMD_ONENAND
761 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
762 initr_malloc_bootparams,
764 INIT_FUNC_WATCHDOG_RESET
766 #if defined(CONFIG_ID_EEPROM) || defined(CONFIG_SYS_I2C_MAC_OFFSET)
767 mac_read_from_eeprom,
769 INIT_FUNC_WATCHDOG_RESET
770 #if defined(CONFIG_PCI) && !defined(CONFIG_SYS_EARLY_PCI_INIT)
772 * Do pci configuration
781 console_init_r, /* fully init console as a device */
782 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
786 #ifdef CONFIG_ARCH_MISC_INIT
787 arch_misc_init, /* miscellaneous arch-dependent init */
789 #ifdef CONFIG_MISC_INIT_R
790 misc_init_r, /* miscellaneous platform-dependent init */
792 INIT_FUNC_WATCHDOG_RESET
793 #ifdef CONFIG_CMD_KGDB
798 initr_enable_interrupts,
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 #ifdef CONFIG_BOARD_LATE_INIT
813 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
814 INIT_FUNC_WATCHDOG_RESET
817 #ifdef CONFIG_BITBANGMII
820 #ifdef CONFIG_CMD_NET
821 INIT_FUNC_WATCHDOG_RESET
827 #if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_IDE)
830 #if defined(CONFIG_IDE)
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)
852 void board_init_r(gd_t *new_gd, ulong dest_addr)
855 * Set up the new global data pointer. So far only x86 does this
857 * TODO(sjg@chromium.org): Consider doing this for all archs, or
858 * dropping the new_gd parameter.
860 #if CONFIG_IS_ENABLED(X86_64)
861 arch_setup_gd(new_gd);
864 #ifdef CONFIG_NEEDS_MANUAL_RELOC
868 #if !defined(CONFIG_X86) && !defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
871 gd->flags &= ~GD_FLG_LOG_READY;
873 #ifdef CONFIG_NEEDS_MANUAL_RELOC
874 for (i = 0; i < ARRAY_SIZE(init_sequence_r); i++)
875 init_sequence_r[i] += gd->reloc_off;
878 if (initcall_run_list(init_sequence_r))
881 /* NOTREACHED - run_main_loop() does not return */