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+
14 /* TODO: can we just include all these headers whether needed or not? */
15 #if defined(CONFIG_CMD_BEDBUG)
16 #include <bedbug/type.h>
18 #ifdef CONFIG_HAS_DATAFLASH
19 #include <dataflash.h>
22 #include <environment.h>
24 #if defined(CONFIG_CMD_IDE)
31 #if defined(CONFIG_CMD_KGDB)
36 #ifdef CONFIG_BITBANGMII
41 #include <onenand_uboot.h>
45 #include <stdio_dev.h>
48 #ifdef CONFIG_ADDR_MAP
51 #include <asm/sections.h>
53 #include <asm/init_helpers.h>
56 #include <linux/compiler.h>
57 #include <linux/err.h>
59 #include <asm/arch/mmu.h>
62 DECLARE_GLOBAL_DATA_PTR;
64 ulong monitor_flash_len;
66 __weak int board_flash_wp_on(void)
69 * Most flashes can't be detected when write protection is enabled,
70 * so provide a way to let U-Boot gracefully ignore write protected
76 __weak void cpu_secondary_init_r(void)
80 static int initr_secondary_cpu(void)
83 * after non-volatile devices & environment is setup and cpu code have
84 * another round to deal with any initialization that might require
85 * full access to the environment or loading of some image (firmware)
86 * from a non-volatile device
88 /* TODO: maybe define this for all archs? */
89 cpu_secondary_init_r();
94 static int initr_trace(void)
97 trace_init(gd->trace_buff, CONFIG_TRACE_BUFFER_SIZE);
103 static int initr_reloc(void)
105 /* tell others: relocation done */
106 gd->flags |= GD_FLG_RELOC | GD_FLG_FULL_MALLOC_INIT;
107 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
114 * Some of these functions are needed purely because the functions they
115 * call return void. If we change them to return 0, these stubs can go away.
117 static int initr_caches(void)
125 __weak int fixup_cpu(void)
130 static int initr_reloc_global_data(void)
133 monitor_flash_len = _end - __image_copy_start;
134 #elif !defined(CONFIG_SANDBOX) && !defined(CONFIG_NIOS2)
135 monitor_flash_len = (ulong)&__init_end - gd->relocaddr;
137 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
139 * The gd->cpu pointer is set to an address in flash before relocation.
140 * We need to update it to point to the same CPU entry in RAM.
141 * TODO: why not just add gd->reloc_ofs?
143 gd->arch.cpu += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
146 * If we didn't know the cpu mask & # cores, we can save them of
147 * now rather than 'computing' them constantly
151 #ifdef CONFIG_SYS_EXTRA_ENV_RELOC
153 * Some systems need to relocate the env_addr pointer early because the
154 * location it points to will get invalidated before env_relocate is
155 * called. One example is on systems that might use a L2 or L3 cache
156 * in SRAM mode and initialize that cache from SRAM mode back to being
157 * a cache in cpu_init_r.
159 gd->env_addr += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
164 static int initr_serial(void)
170 #if defined(CONFIG_PPC) || defined(CONFIG_M68K)
171 static int initr_trap(void)
174 * Setup trap handlers
176 #if defined(CONFIG_PPC)
177 trap_init(gd->relocaddr);
179 trap_init(CONFIG_SYS_SDRAM_BASE);
185 #ifdef CONFIG_ADDR_MAP
186 static int initr_addr_map(void)
194 #ifdef CONFIG_LOGBUFFER
195 unsigned long logbuffer_base(void)
197 return gd->ram_top - LOGBUFF_LEN;
200 static int initr_logbuffer(void)
208 static int initr_post_backlog(void)
210 post_output_backlog();
215 #ifdef CONFIG_SYS_DELAYED_ICACHE
216 static int initr_icache_enable(void)
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 */
231 static int initr_pci(void)
239 #ifdef CONFIG_WINBOND_83C553
240 static int initr_w83c553f(void)
243 * Initialise the ISA bridge
245 initialise_w83c553f();
250 static int initr_barrier(void)
253 /* TODO: Can we not use dmb() macros for this? */
259 static int initr_malloc(void)
263 #ifdef CONFIG_SYS_MALLOC_F_LEN
264 debug("Pre-reloc malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr,
265 gd->malloc_ptr / 1024);
267 /* The malloc area is immediately below the monitor copy in DRAM */
268 malloc_start = gd->relocaddr - TOTAL_MALLOC_LEN;
269 mem_malloc_init((ulong)map_sysmem(malloc_start, TOTAL_MALLOC_LEN),
274 #ifdef CONFIG_SYS_NONCACHED_MEMORY
275 static int initr_noncached(void)
283 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;
288 return dm_init_and_scan(false);
292 __weak int power_init_board(void)
297 static int initr_announce(void)
299 debug("Now running in RAM - U-Boot at: %08lx\n", gd->relocaddr);
303 #ifdef CONFIG_NEEDS_MANUAL_RELOC
304 static int initr_manual_reloc_cmdtable(void)
306 fixup_cmdtable(ll_entry_start(cmd_tbl_t, cmd),
307 ll_entry_count(cmd_tbl_t, cmd));
312 #if !defined(CONFIG_SYS_NO_FLASH)
313 static int initr_flash(void)
315 ulong flash_size = 0;
320 if (board_flash_wp_on())
321 printf("Uninitialized - Write Protect On\n");
323 flash_size = flash_init();
325 print_size(flash_size, "");
326 #ifdef CONFIG_SYS_FLASH_CHECKSUM
328 * Compute and print flash CRC if flashchecksum is set to 'y'
330 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
332 if (getenv_yesno("flashchecksum") == 1) {
333 printf(" CRC: %08X", crc32(0,
334 (const unsigned char *) CONFIG_SYS_FLASH_BASE,
337 #endif /* CONFIG_SYS_FLASH_CHECKSUM */
340 /* update start of FLASH memory */
341 #ifdef CONFIG_SYS_FLASH_BASE
342 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
344 /* size of FLASH memory (final value) */
345 bd->bi_flashsize = flash_size;
347 #if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
348 /* Make a update of the Memctrl. */
349 update_flash_size(flash_size);
353 #if defined(CONFIG_OXC) || defined(CONFIG_RMU)
354 /* flash mapped at end of memory map */
355 bd->bi_flashoffset = CONFIG_SYS_TEXT_BASE + flash_size;
356 #elif CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
357 bd->bi_flashoffset = monitor_flash_len; /* reserved area for monitor */
363 #if defined(CONFIG_PPC) && !defined(CONFIG_DM_SPI)
364 static int initr_spi(void)
366 /* PPC does this here */
368 #if !defined(CONFIG_ENV_IS_IN_EEPROM)
377 #ifdef CONFIG_CMD_NAND
378 /* go init the NAND */
379 static int initr_nand(void)
387 #if defined(CONFIG_CMD_ONENAND)
388 /* go init the NAND */
389 static int initr_onenand(void)
397 #ifdef CONFIG_GENERIC_MMC
398 static int initr_mmc(void)
401 mmc_initialize(gd->bd);
406 #ifdef CONFIG_HAS_DATAFLASH
407 static int initr_dataflash(void)
409 AT91F_DataflashInit();
410 dataflash_print_info();
416 * Tell if it's OK to load the environment early in boot.
418 * If CONFIG_OF_CONFIG is defined, we'll check with the FDT to see
419 * if this is OK (defaulting to saying it's OK).
421 * NOTE: Loading the environment early can be a bad idea if security is
422 * important, since no verification is done on the environment.
424 * @return 0 if environment should not be loaded, !=0 if it is ok to load
426 static int should_load_env(void)
428 #ifdef CONFIG_OF_CONTROL
429 return fdtdec_get_config_int(gd->fdt_blob, "load-environment", 1);
430 #elif defined CONFIG_DELAY_ENVIRONMENT
437 static int initr_env(void)
439 /* initialize environment */
440 if (should_load_env())
443 set_default_env(NULL);
445 /* Initialize from environment */
446 load_addr = getenv_ulong("loadaddr", 16, load_addr);
447 #if defined(CONFIG_SYS_EXTBDINFO)
448 #if defined(CONFIG_405GP) || defined(CONFIG_405EP)
449 #if defined(CONFIG_I2CFAST)
451 * set bi_iic_fast for linux taking environment variable
452 * "i2cfast" into account
455 char *s = getenv("i2cfast");
457 if (s && ((*s == 'y') || (*s == 'Y'))) {
458 gd->bd->bi_iic_fast[0] = 1;
459 gd->bd->bi_iic_fast[1] = 1;
462 #endif /* CONFIG_I2CFAST */
463 #endif /* CONFIG_405GP, CONFIG_405EP */
464 #endif /* CONFIG_SYS_EXTBDINFO */
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");
481 /* TODO: with new initcalls, move this into the driver */
482 extern void sc3_read_eeprom(void);
484 static int initr_sc3_read_eeprom(void)
491 static int initr_jumptable(void)
497 #if defined(CONFIG_API)
498 static int initr_api(void)
506 /* enable exceptions */
507 #if defined(CONFIG_ARM) || defined(CONFIG_AVR32)
508 static int initr_enable_interrupts(void)
515 #ifdef CONFIG_CMD_NET
516 static int initr_ethaddr(void)
520 /* kept around for legacy kernels only ... ignore the next section */
521 eth_getenv_enetaddr("ethaddr", bd->bi_enetaddr);
522 #ifdef CONFIG_HAS_ETH1
523 eth_getenv_enetaddr("eth1addr", bd->bi_enet1addr);
525 #ifdef CONFIG_HAS_ETH2
526 eth_getenv_enetaddr("eth2addr", bd->bi_enet2addr);
528 #ifdef CONFIG_HAS_ETH3
529 eth_getenv_enetaddr("eth3addr", bd->bi_enet3addr);
531 #ifdef CONFIG_HAS_ETH4
532 eth_getenv_enetaddr("eth4addr", bd->bi_enet4addr);
534 #ifdef CONFIG_HAS_ETH5
535 eth_getenv_enetaddr("eth5addr", bd->bi_enet5addr);
539 #endif /* CONFIG_CMD_NET */
541 #ifdef CONFIG_CMD_KGDB
542 static int initr_kgdb(void)
550 #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
551 static int initr_status_led(void)
553 status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING);
559 #if defined(CONFIG_CMD_SCSI)
560 static int initr_scsi(void)
569 #if defined(CONFIG_CMD_DOC)
570 static int initr_doc(void)
578 #ifdef CONFIG_BITBANGMII
579 static int initr_bbmii(void)
586 #ifdef CONFIG_CMD_NET
587 static int initr_net(void)
590 eth_initialize(gd->bd);
591 #if defined(CONFIG_RESET_PHY_R)
592 debug("Reset Ethernet PHY\n");
600 static int initr_post(void)
602 post_run(NULL, POST_RAM | post_bootmode_get(0));
607 #if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_CMD_IDE)
608 static int initr_pcmcia(void)
616 #if defined(CONFIG_CMD_IDE)
617 static int initr_ide(void)
619 #ifdef CONFIG_IDE_8xx_PCCARD
624 #if defined(CONFIG_START_IDE)
625 if (board_start_ide())
634 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
636 * Export available size of memory for Linux, taking into account the
637 * protected RAM at top of memory
645 pram = getenv_ulong("pram", 10, CONFIG_PRAM);
647 # if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR)
648 /* Also take the logbuffer into account (pram is in kB) */
649 pram += (LOGBUFF_LEN + LOGBUFF_OVERHEAD) / 1024;
651 sprintf(memsz, "%ldk", (long int) ((gd->ram_size / 1024) - pram));
652 setenv("mem", memsz);
658 #ifdef CONFIG_CMD_BEDBUG
659 static int initr_bedbug(void)
668 static int initr_kbd(void)
676 static int run_main_loop(void)
678 #ifdef CONFIG_SANDBOX
679 sandbox_main_loop_init();
681 /* main_loop() can return to retry autoboot, if so just run it again */
688 * Over time we hope to remove these functions with code fragments and
689 * stub funtcions, and instead call the relevant function directly.
691 * We also hope to remove most of the driver-related init and do it if/when
692 * the driver is later used.
694 * TODO: perhaps reset the watchdog in the initcall function after each call?
696 init_fnc_t init_sequence_r[] = {
699 /* TODO: could x86/PPC have this also perhaps? */
703 initr_reloc_global_data,
704 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
705 initr_unlock_ram_in_cache,
709 #ifdef CONFIG_SYS_NONCACHED_MEMORY
717 board_init, /* Setup chipselects */
720 * TODO: printing of the clock inforamtion of the board is now
721 * implemented as part of bdinfo command. Currently only support for
722 * davinci SOC's is added. Remove this check once all the board
726 set_cpu_clk_info, /* Setup clock information */
731 INIT_FUNC_WATCHDOG_RESET
732 #ifdef CONFIG_NEEDS_MANUAL_RELOC
733 initr_manual_reloc_cmdtable,
735 #if defined(CONFIG_PPC) || defined(CONFIG_M68K)
738 #ifdef CONFIG_ADDR_MAP
741 #if defined(CONFIG_BOARD_EARLY_INIT_R)
744 INIT_FUNC_WATCHDOG_RESET
745 #ifdef CONFIG_LOGBUFFER
751 INIT_FUNC_WATCHDOG_RESET
752 #ifdef CONFIG_SYS_DELAYED_ICACHE
755 #if defined(CONFIG_PCI) && defined(CONFIG_SYS_EARLY_PCI_INIT)
757 * Do early PCI configuration _before_ the flash gets initialised,
758 * because PCU ressources are crucial for flash access on some boards.
762 #ifdef CONFIG_WINBOND_83C553
765 #ifdef CONFIG_ARCH_EARLY_INIT_R
769 #ifndef CONFIG_SYS_NO_FLASH
772 INIT_FUNC_WATCHDOG_RESET
773 #if defined(CONFIG_PPC) || defined(CONFIG_M68K)
774 /* initialize higher level parts of CPU like time base and timers */
780 #if defined(CONFIG_X86) && defined(CONFIG_SPI)
783 #ifdef CONFIG_CMD_NAND
786 #ifdef CONFIG_CMD_ONENAND
789 #ifdef CONFIG_GENERIC_MMC
792 #ifdef CONFIG_HAS_DATAFLASH
796 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
797 initr_malloc_bootparams,
799 INIT_FUNC_WATCHDOG_RESET
802 initr_sc3_read_eeprom,
804 #if defined(CONFIG_ID_EEPROM) || defined(CONFIG_SYS_I2C_MAC_OFFSET)
805 mac_read_from_eeprom,
807 INIT_FUNC_WATCHDOG_RESET
808 #if defined(CONFIG_PCI) && !defined(CONFIG_SYS_EARLY_PCI_INIT)
810 * Do pci configuration
819 console_init_r, /* fully init console as a device */
820 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
823 #ifdef CONFIG_ARCH_MISC_INIT
824 arch_misc_init, /* miscellaneous arch-dependent init */
826 #ifdef CONFIG_MISC_INIT_R
827 misc_init_r, /* miscellaneous platform-dependent init */
829 INIT_FUNC_WATCHDOG_RESET
830 #ifdef CONFIG_CMD_KGDB
834 #if defined(CONFIG_ARM) || defined(CONFIG_AVR32)
835 initr_enable_interrupts,
837 #if defined(CONFIG_X86) || defined(CONFIG_MICROBLAZE) || defined(CONFIG_AVR32) \
838 || defined(CONFIG_M68K)
839 timer_init, /* initialize timer */
841 #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
844 /* PPC has a udelay(20) here dating from 2002. Why? */
845 #ifdef CONFIG_CMD_NET
848 #ifdef CONFIG_BOARD_LATE_INIT
851 #ifdef CONFIG_CMD_SCSI
852 INIT_FUNC_WATCHDOG_RESET
855 #ifdef CONFIG_CMD_DOC
856 INIT_FUNC_WATCHDOG_RESET
859 #ifdef CONFIG_BITBANGMII
862 #ifdef CONFIG_CMD_NET
863 INIT_FUNC_WATCHDOG_RESET
869 #if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_CMD_IDE)
872 #if defined(CONFIG_CMD_IDE)
875 #ifdef CONFIG_LAST_STAGE_INIT
876 INIT_FUNC_WATCHDOG_RESET
878 * Some parts can be only initialized if all others (like
879 * Interrupts) are up and running (i.e. the PC-style ISA
884 #ifdef CONFIG_CMD_BEDBUG
885 INIT_FUNC_WATCHDOG_RESET
888 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
897 void board_init_r(gd_t *new_gd, ulong dest_addr)
899 #ifdef CONFIG_NEEDS_MANUAL_RELOC
904 mmu_init_r(dest_addr);
907 #if !defined(CONFIG_X86) && !defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
911 #ifdef CONFIG_NEEDS_MANUAL_RELOC
912 for (i = 0; i < ARRAY_SIZE(init_sequence_r); i++)
913 init_sequence_r[i] += gd->reloc_off;
916 if (initcall_run_list(init_sequence_r))
919 /* NOTREACHED - run_main_loop() does not return */