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 /* 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>
40 #include <stdio_dev.h>
44 #ifdef CONFIG_ADDR_MAP
47 #include <asm/sections.h>
49 #include <linux/compiler.h>
50 #include <linux/err.h>
51 #include <efi_loader.h>
53 DECLARE_GLOBAL_DATA_PTR;
55 ulong monitor_flash_len;
57 __weak int board_flash_wp_on(void)
60 * Most flashes can't be detected when write protection is enabled,
61 * so provide a way to let U-Boot gracefully ignore write protected
67 __weak void cpu_secondary_init_r(void)
71 static int initr_secondary_cpu(void)
74 * after non-volatile devices & environment is setup and cpu code have
75 * another round to deal with any initialization that might require
76 * full access to the environment or loading of some image (firmware)
77 * from a non-volatile device
79 /* TODO: maybe define this for all archs? */
80 cpu_secondary_init_r();
85 static int initr_trace(void)
88 trace_init(gd->trace_buff, CONFIG_TRACE_BUFFER_SIZE);
94 static int initr_reloc(void)
96 /* tell others: relocation done */
97 gd->flags |= GD_FLG_RELOC | GD_FLG_FULL_MALLOC_INIT;
104 * Some of these functions are needed purely because the functions they
105 * call return void. If we change them to return 0, these stubs can go away.
107 static int initr_caches(void)
115 __weak int fixup_cpu(void)
120 static int initr_reloc_global_data(void)
123 monitor_flash_len = _end - __image_copy_start;
124 #elif defined(CONFIG_NDS32) || defined(CONFIG_RISCV)
125 monitor_flash_len = (ulong)&_end - (ulong)&_start;
126 #elif !defined(CONFIG_SANDBOX) && !defined(CONFIG_NIOS2)
127 monitor_flash_len = (ulong)&__init_end - gd->relocaddr;
129 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
131 * The gd->cpu pointer is set to an address in flash before relocation.
132 * We need to update it to point to the same CPU entry in RAM.
133 * TODO: why not just add gd->reloc_ofs?
135 gd->arch.cpu += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
138 * If we didn't know the cpu mask & # cores, we can save them of
139 * now rather than 'computing' them constantly
143 #ifdef CONFIG_SYS_EXTRA_ENV_RELOC
145 * Some systems need to relocate the env_addr pointer early because the
146 * location it points to will get invalidated before env_relocate is
147 * called. One example is on systems that might use a L2 or L3 cache
148 * in SRAM mode and initialize that cache from SRAM mode back to being
149 * a cache in cpu_init_r.
151 gd->env_addr += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
153 #ifdef CONFIG_OF_EMBED
155 * The fdt_blob needs to be moved to new relocation address
156 * incase of FDT blob is embedded with in image
158 gd->fdt_blob += gd->reloc_off;
160 #ifdef CONFIG_EFI_LOADER
161 efi_runtime_relocate(gd->relocaddr, NULL);
167 static int initr_serial(void)
173 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_MIPS)
174 static int initr_trap(void)
177 * Setup trap handlers
179 #if defined(CONFIG_PPC)
180 trap_init(gd->relocaddr);
182 trap_init(CONFIG_SYS_SDRAM_BASE);
188 #ifdef CONFIG_ADDR_MAP
189 static int initr_addr_map(void)
198 static int initr_post_backlog(void)
200 post_output_backlog();
205 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
206 static int initr_unlock_ram_in_cache(void)
208 unlock_ram_in_cache(); /* it's time to unlock D-cache in e500 */
214 static int initr_pci(void)
216 #ifndef CONFIG_DM_PCI
224 static int initr_barrier(void)
227 /* TODO: Can we not use dmb() macros for this? */
233 static int initr_malloc(void)
237 #if CONFIG_VAL(SYS_MALLOC_F_LEN)
238 debug("Pre-reloc malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr,
239 gd->malloc_ptr / 1024);
241 /* The malloc area is immediately below the monitor copy in DRAM */
242 malloc_start = gd->relocaddr - TOTAL_MALLOC_LEN;
243 mem_malloc_init((ulong)map_sysmem(malloc_start, TOTAL_MALLOC_LEN),
248 static int initr_console_record(void)
250 #if defined(CONFIG_CONSOLE_RECORD)
251 return console_record_init();
257 #ifdef CONFIG_SYS_NONCACHED_MEMORY
258 static int initr_noncached(void)
265 #ifdef CONFIG_OF_LIVE
266 static int initr_of_live(void)
270 bootstage_start(BOOTSTAGE_ID_ACCUM_OF_LIVE, "of_live");
271 ret = of_live_build(gd->fdt_blob, (struct device_node **)&gd->of_root);
272 bootstage_accum(BOOTSTAGE_ID_ACCUM_OF_LIVE);
281 static int initr_dm(void)
285 /* Save the pre-reloc driver model and start a new one */
286 gd->dm_root_f = gd->dm_root;
291 bootstage_start(BOOTSTATE_ID_ACCUM_DM_R, "dm_r");
292 ret = dm_init_and_scan(false);
293 bootstage_accum(BOOTSTATE_ID_ACCUM_DM_R);
296 #ifdef CONFIG_TIMER_EARLY
297 ret = dm_timer_init();
306 static int initr_bootstage(void)
308 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
313 __weak int power_init_board(void)
318 static int initr_announce(void)
320 debug("Now running in RAM - U-Boot at: %08lx\n", gd->relocaddr);
324 #ifdef CONFIG_NEEDS_MANUAL_RELOC
325 static int initr_manual_reloc_cmdtable(void)
327 fixup_cmdtable(ll_entry_start(cmd_tbl_t, cmd),
328 ll_entry_count(cmd_tbl_t, cmd));
333 #if defined(CONFIG_MTD_NOR_FLASH)
334 static int initr_flash(void)
336 ulong flash_size = 0;
341 if (board_flash_wp_on())
342 printf("Uninitialized - Write Protect On\n");
344 flash_size = flash_init();
346 print_size(flash_size, "");
347 #ifdef CONFIG_SYS_FLASH_CHECKSUM
349 * Compute and print flash CRC if flashchecksum is set to 'y'
351 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
353 if (env_get_yesno("flashchecksum") == 1) {
354 const uchar *flash_base = (const uchar *)CONFIG_SYS_FLASH_BASE;
356 printf(" CRC: %08X", crc32(0,
360 #endif /* CONFIG_SYS_FLASH_CHECKSUM */
363 /* update start of FLASH memory */
364 #ifdef CONFIG_SYS_FLASH_BASE
365 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
367 /* size of FLASH memory (final value) */
368 bd->bi_flashsize = flash_size;
370 #if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
371 /* Make a update of the Memctrl. */
372 update_flash_size(flash_size);
375 #if defined(CONFIG_OXC) || defined(CONFIG_RMU)
376 /* flash mapped at end of memory map */
377 bd->bi_flashoffset = CONFIG_SYS_TEXT_BASE + flash_size;
378 #elif CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
379 bd->bi_flashoffset = monitor_flash_len; /* reserved area for monitor */
385 #if defined(CONFIG_PPC) && !defined(CONFIG_DM_SPI)
386 static int initr_spi(void)
388 /* MPC8xx does this here */
389 #ifdef CONFIG_MPC8XX_SPI
390 #if !defined(CONFIG_ENV_IS_IN_EEPROM)
399 #ifdef CONFIG_CMD_NAND
400 /* go init the NAND */
401 static int initr_nand(void)
405 printf("%lu MiB\n", nand_size() / 1024);
410 #if defined(CONFIG_CMD_ONENAND)
411 /* go init the NAND */
412 static int initr_onenand(void)
421 static int initr_mmc(void)
424 mmc_initialize(gd->bd);
430 * Tell if it's OK to load the environment early in boot.
432 * If CONFIG_OF_CONTROL is defined, we'll check with the FDT to see
433 * if this is OK (defaulting to saying it's OK).
435 * NOTE: Loading the environment early can be a bad idea if security is
436 * important, since no verification is done on the environment.
438 * @return 0 if environment should not be loaded, !=0 if it is ok to load
440 static int should_load_env(void)
442 #ifdef CONFIG_OF_CONTROL
443 return fdtdec_get_config_int(gd->fdt_blob, "load-environment", 1);
444 #elif defined CONFIG_DELAY_ENVIRONMENT
451 static int initr_env(void)
453 /* initialize environment */
454 if (should_load_env())
457 set_default_env(NULL, 0);
458 #ifdef CONFIG_OF_CONTROL
459 env_set_addr("fdtcontroladdr", gd->fdt_blob);
462 /* Initialize from environment */
463 load_addr = env_get_ulong("loadaddr", 16, load_addr);
468 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
469 static int initr_malloc_bootparams(void)
471 gd->bd->bi_boot_params = (ulong)malloc(CONFIG_SYS_BOOTPARAMS_LEN);
472 if (!gd->bd->bi_boot_params) {
473 puts("WARNING: Cannot allocate space for boot parameters\n");
480 static int initr_jumptable(void)
486 #if defined(CONFIG_API)
487 static int initr_api(void)
495 /* enable exceptions */
497 static int initr_enable_interrupts(void)
504 #ifdef CONFIG_CMD_NET
505 static int initr_ethaddr(void)
509 /* kept around for legacy kernels only ... ignore the next section */
510 eth_env_get_enetaddr("ethaddr", bd->bi_enetaddr);
511 #ifdef CONFIG_HAS_ETH1
512 eth_env_get_enetaddr("eth1addr", bd->bi_enet1addr);
514 #ifdef CONFIG_HAS_ETH2
515 eth_env_get_enetaddr("eth2addr", bd->bi_enet2addr);
517 #ifdef CONFIG_HAS_ETH3
518 eth_env_get_enetaddr("eth3addr", bd->bi_enet3addr);
520 #ifdef CONFIG_HAS_ETH4
521 eth_env_get_enetaddr("eth4addr", bd->bi_enet4addr);
523 #ifdef CONFIG_HAS_ETH5
524 eth_env_get_enetaddr("eth5addr", bd->bi_enet5addr);
528 #endif /* CONFIG_CMD_NET */
530 #ifdef CONFIG_CMD_KGDB
531 static int initr_kgdb(void)
539 #if defined(CONFIG_LED_STATUS)
540 static int initr_status_led(void)
542 #if defined(CONFIG_LED_STATUS_BOOT)
543 status_led_set(CONFIG_LED_STATUS_BOOT, CONFIG_LED_STATUS_BLINKING);
551 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
552 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) && !defined(CONFIG_BLK)
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 defined(CONFIG_SANDBOX)
695 board_init, /* Setup chipselects */
698 * TODO: printing of the clock inforamtion of the board is now
699 * implemented as part of bdinfo command. Currently only support for
700 * davinci SOC's is added. Remove this check once all the board
704 set_cpu_clk_info, /* Setup clock information */
706 #ifdef CONFIG_EFI_LOADER
712 INIT_FUNC_WATCHDOG_RESET
713 #ifdef CONFIG_NEEDS_MANUAL_RELOC
714 initr_manual_reloc_cmdtable,
716 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_MIPS)
719 #ifdef CONFIG_ADDR_MAP
722 #if defined(CONFIG_BOARD_EARLY_INIT_R)
725 INIT_FUNC_WATCHDOG_RESET
729 INIT_FUNC_WATCHDOG_RESET
730 #if defined(CONFIG_PCI) && defined(CONFIG_SYS_EARLY_PCI_INIT)
732 * Do early PCI configuration _before_ the flash gets initialised,
733 * because PCU resources are crucial for flash access on some boards.
737 #ifdef CONFIG_ARCH_EARLY_INIT_R
741 #ifdef CONFIG_MTD_NOR_FLASH
744 INIT_FUNC_WATCHDOG_RESET
745 #if defined(CONFIG_PPC) || defined(CONFIG_M68K) || defined(CONFIG_X86)
746 /* initialize higher level parts of CPU like time base and timers */
752 #ifdef CONFIG_CMD_NAND
755 #ifdef CONFIG_CMD_ONENAND
762 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
763 initr_malloc_bootparams,
765 INIT_FUNC_WATCHDOG_RESET
767 #if defined(CONFIG_ID_EEPROM) || defined(CONFIG_SYS_I2C_MAC_OFFSET)
768 mac_read_from_eeprom,
770 INIT_FUNC_WATCHDOG_RESET
771 #if defined(CONFIG_PCI) && !defined(CONFIG_SYS_EARLY_PCI_INIT)
773 * Do pci configuration
782 console_init_r, /* fully init console as a device */
783 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
787 #ifdef CONFIG_ARCH_MISC_INIT
788 arch_misc_init, /* miscellaneous arch-dependent init */
790 #ifdef CONFIG_MISC_INIT_R
791 misc_init_r, /* miscellaneous platform-dependent init */
793 INIT_FUNC_WATCHDOG_RESET
794 #ifdef CONFIG_CMD_KGDB
799 initr_enable_interrupts,
801 #if defined(CONFIG_MICROBLAZE) || defined(CONFIG_M68K)
802 timer_init, /* initialize timer */
804 #if defined(CONFIG_LED_STATUS)
807 /* PPC has a udelay(20) here dating from 2002. Why? */
808 #ifdef CONFIG_CMD_NET
811 #ifdef CONFIG_BOARD_LATE_INIT
814 #if defined(CONFIG_SCSI) && !defined(CONFIG_DM_SCSI)
815 INIT_FUNC_WATCHDOG_RESET
818 #ifdef CONFIG_BITBANGMII
821 #ifdef CONFIG_CMD_NET
822 INIT_FUNC_WATCHDOG_RESET
828 #if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_IDE)
831 #if defined(CONFIG_IDE) && !defined(CONFIG_BLK)
834 #ifdef CONFIG_LAST_STAGE_INIT
835 INIT_FUNC_WATCHDOG_RESET
837 * Some parts can be only initialized if all others (like
838 * Interrupts) are up and running (i.e. the PC-style ISA
843 #ifdef CONFIG_CMD_BEDBUG
844 INIT_FUNC_WATCHDOG_RESET
847 #if defined(CONFIG_PRAM)
853 void board_init_r(gd_t *new_gd, ulong dest_addr)
856 * Set up the new global data pointer. So far only x86 does this
858 * TODO(sjg@chromium.org): Consider doing this for all archs, or
859 * dropping the new_gd parameter.
861 #if CONFIG_IS_ENABLED(X86_64)
862 arch_setup_gd(new_gd);
865 #ifdef CONFIG_NEEDS_MANUAL_RELOC
869 #if !defined(CONFIG_X86) && !defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
872 gd->flags &= ~GD_FLG_LOG_READY;
874 #ifdef CONFIG_NEEDS_MANUAL_RELOC
875 for (i = 0; i < ARRAY_SIZE(init_sequence_r); i++)
876 init_sequence_r[i] += gd->reloc_off;
879 if (initcall_run_list(init_sequence_r))
882 /* NOTREACHED - run_main_loop() does not return */