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 DECLARE_GLOBAL_DATA_PTR;
61 ulong monitor_flash_len;
63 __weak int board_flash_wp_on(void)
66 * Most flashes can't be detected when write protection is enabled,
67 * so provide a way to let U-Boot gracefully ignore write protected
73 __weak void cpu_secondary_init_r(void)
77 static int initr_secondary_cpu(void)
80 * after non-volatile devices & environment is setup and cpu code have
81 * another round to deal with any initialization that might require
82 * full access to the environment or loading of some image (firmware)
83 * from a non-volatile device
85 /* TODO: maybe define this for all archs? */
86 cpu_secondary_init_r();
91 static int initr_trace(void)
94 trace_init(gd->trace_buff, CONFIG_TRACE_BUFFER_SIZE);
100 static int initr_reloc(void)
102 /* tell others: relocation done */
103 gd->flags |= GD_FLG_RELOC | GD_FLG_FULL_MALLOC_INIT;
104 bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
111 * Some of these functions are needed purely because the functions they
112 * call return void. If we change them to return 0, these stubs can go away.
114 static int initr_caches(void)
122 __weak int fixup_cpu(void)
127 static int initr_reloc_global_data(void)
130 monitor_flash_len = _end - __image_copy_start;
131 #elif !defined(CONFIG_SANDBOX) && !defined(CONFIG_NIOS2)
132 monitor_flash_len = (ulong)&__init_end - gd->relocaddr;
134 #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
136 * The gd->cpu pointer is set to an address in flash before relocation.
137 * We need to update it to point to the same CPU entry in RAM.
138 * TODO: why not just add gd->reloc_ofs?
140 gd->arch.cpu += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
143 * If we didn't know the cpu mask & # cores, we can save them of
144 * now rather than 'computing' them constantly
148 #ifdef CONFIG_SYS_EXTRA_ENV_RELOC
150 * Some systems need to relocate the env_addr pointer early because the
151 * location it points to will get invalidated before env_relocate is
152 * called. One example is on systems that might use a L2 or L3 cache
153 * in SRAM mode and initialize that cache from SRAM mode back to being
154 * a cache in cpu_init_r.
156 gd->env_addr += gd->relocaddr - CONFIG_SYS_MONITOR_BASE;
161 static int initr_serial(void)
168 static int initr_trap(void)
171 * Setup trap handlers
173 trap_init(gd->relocaddr);
179 #ifdef CONFIG_ADDR_MAP
180 static int initr_addr_map(void)
188 #ifdef CONFIG_LOGBUFFER
189 unsigned long logbuffer_base(void)
191 return gd->ram_top - LOGBUFF_LEN;
194 static int initr_logbuffer(void)
202 static int initr_post_backlog(void)
204 post_output_backlog();
209 #ifdef CONFIG_SYS_DELAYED_ICACHE
210 static int initr_icache_enable(void)
216 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
217 static int initr_unlock_ram_in_cache(void)
219 unlock_ram_in_cache(); /* it's time to unlock D-cache in e500 */
225 static int initr_pci(void)
233 #ifdef CONFIG_WINBOND_83C553
234 static int initr_w83c553f(void)
237 * Initialise the ISA bridge
239 initialise_w83c553f();
244 static int initr_barrier(void)
247 /* TODO: Can we not use dmb() macros for this? */
253 static int initr_malloc(void)
257 #ifdef CONFIG_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 */
262 malloc_start = gd->relocaddr - TOTAL_MALLOC_LEN;
263 mem_malloc_init((ulong)map_sysmem(malloc_start, TOTAL_MALLOC_LEN),
269 static int initr_dm(void)
271 /* Save the pre-reloc driver model and start a new one */
272 gd->dm_root_f = gd->dm_root;
274 return dm_init_and_scan(false);
278 __weak int power_init_board(void)
283 static int initr_announce(void)
285 debug("Now running in RAM - U-Boot at: %08lx\n", gd->relocaddr);
289 #if !defined(CONFIG_SYS_NO_FLASH)
290 static int initr_flash(void)
292 ulong flash_size = 0;
298 if (board_flash_wp_on()) {
299 printf("Uninitialized - Write Protect On\n");
300 /* Since WP is on, we can't find real size. Set to 0 */
303 flash_size = flash_init();
307 puts("*** failed ***\n");
309 /* Why does PPC do this? */
314 print_size(flash_size, "");
315 #ifdef CONFIG_SYS_FLASH_CHECKSUM
317 * Compute and print flash CRC if flashchecksum is set to 'y'
319 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
321 if (getenv_yesno("flashchecksum") == 1) {
322 printf(" CRC: %08X", crc32(0,
323 (const unsigned char *) CONFIG_SYS_FLASH_BASE,
326 #endif /* CONFIG_SYS_FLASH_CHECKSUM */
329 /* update start of FLASH memory */
330 #ifdef CONFIG_SYS_FLASH_BASE
331 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
333 /* size of FLASH memory (final value) */
334 bd->bi_flashsize = flash_size;
336 #if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
337 /* Make a update of the Memctrl. */
338 update_flash_size(flash_size);
342 #if defined(CONFIG_OXC) || defined(CONFIG_RMU)
343 /* flash mapped at end of memory map */
344 bd->bi_flashoffset = CONFIG_SYS_TEXT_BASE + flash_size;
345 #elif CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
346 bd->bi_flashoffset = monitor_flash_len; /* reserved area for monitor */
352 #if defined(CONFIG_PPC) && !defined(CONFIG_DM_SPI)
353 static int initr_spi(void)
355 /* PPC does this here */
357 #if !defined(CONFIG_ENV_IS_IN_EEPROM)
366 #ifdef CONFIG_CMD_NAND
367 /* go init the NAND */
368 static int initr_nand(void)
376 #if defined(CONFIG_CMD_ONENAND)
377 /* go init the NAND */
378 static int initr_onenand(void)
386 #ifdef CONFIG_GENERIC_MMC
387 static int initr_mmc(void)
390 mmc_initialize(gd->bd);
395 #ifdef CONFIG_HAS_DATAFLASH
396 static int initr_dataflash(void)
398 AT91F_DataflashInit();
399 dataflash_print_info();
405 * Tell if it's OK to load the environment early in boot.
407 * If CONFIG_OF_CONFIG is defined, we'll check with the FDT to see
408 * if this is OK (defaulting to saying it's OK).
410 * NOTE: Loading the environment early can be a bad idea if security is
411 * important, since no verification is done on the environment.
413 * @return 0 if environment should not be loaded, !=0 if it is ok to load
415 static int should_load_env(void)
417 #ifdef CONFIG_OF_CONTROL
418 return fdtdec_get_config_int(gd->fdt_blob, "load-environment", 1);
419 #elif defined CONFIG_DELAY_ENVIRONMENT
426 static int initr_env(void)
428 /* initialize environment */
429 if (should_load_env())
432 set_default_env(NULL);
434 /* Initialize from environment */
435 load_addr = getenv_ulong("loadaddr", 16, load_addr);
436 #if defined(CONFIG_SYS_EXTBDINFO)
437 #if defined(CONFIG_405GP) || defined(CONFIG_405EP)
438 #if defined(CONFIG_I2CFAST)
440 * set bi_iic_fast for linux taking environment variable
441 * "i2cfast" into account
444 char *s = getenv("i2cfast");
446 if (s && ((*s == 'y') || (*s == 'Y'))) {
447 gd->bd->bi_iic_fast[0] = 1;
448 gd->bd->bi_iic_fast[1] = 1;
451 #endif /* CONFIG_I2CFAST */
452 #endif /* CONFIG_405GP, CONFIG_405EP */
453 #endif /* CONFIG_SYS_EXTBDINFO */
458 /* TODO: with new initcalls, move this into the driver */
459 extern void sc3_read_eeprom(void);
461 static int initr_sc3_read_eeprom(void)
468 static int initr_jumptable(void)
474 #if defined(CONFIG_API)
475 static int initr_api(void)
483 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
484 static int show_model_r(void)
486 /* Put this here so it appears on the LCD, now it is ready */
487 # ifdef CONFIG_OF_CONTROL
490 model = (char *)fdt_getprop(gd->fdt_blob, 0, "model", NULL);
491 printf("Model: %s\n", model ? model : "<unknown>");
499 /* enable exceptions */
501 static int initr_enable_interrupts(void)
508 #ifdef CONFIG_CMD_NET
509 static int initr_ethaddr(void)
513 /* kept around for legacy kernels only ... ignore the next section */
514 eth_getenv_enetaddr("ethaddr", bd->bi_enetaddr);
515 #ifdef CONFIG_HAS_ETH1
516 eth_getenv_enetaddr("eth1addr", bd->bi_enet1addr);
518 #ifdef CONFIG_HAS_ETH2
519 eth_getenv_enetaddr("eth2addr", bd->bi_enet2addr);
521 #ifdef CONFIG_HAS_ETH3
522 eth_getenv_enetaddr("eth3addr", bd->bi_enet3addr);
524 #ifdef CONFIG_HAS_ETH4
525 eth_getenv_enetaddr("eth4addr", bd->bi_enet4addr);
527 #ifdef CONFIG_HAS_ETH5
528 eth_getenv_enetaddr("eth5addr", bd->bi_enet5addr);
532 #endif /* CONFIG_CMD_NET */
534 #ifdef CONFIG_CMD_KGDB
535 static int initr_kgdb(void)
543 #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
544 static int initr_status_led(void)
546 status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING);
552 #if defined(CONFIG_CMD_SCSI)
553 static int initr_scsi(void)
562 #if defined(CONFIG_CMD_DOC)
563 static int initr_doc(void)
571 #ifdef CONFIG_BITBANGMII
572 static int initr_bbmii(void)
579 #ifdef CONFIG_CMD_NET
580 static int initr_net(void)
583 eth_initialize(gd->bd);
584 #if defined(CONFIG_RESET_PHY_R)
585 debug("Reset Ethernet PHY\n");
593 static int initr_post(void)
595 post_run(NULL, POST_RAM | post_bootmode_get(0));
600 #if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_CMD_IDE)
601 static int initr_pcmcia(void)
609 #if defined(CONFIG_CMD_IDE)
610 static int initr_ide(void)
612 #ifdef CONFIG_IDE_8xx_PCCARD
617 #if defined(CONFIG_START_IDE)
618 if (board_start_ide())
627 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
629 * Export available size of memory for Linux, taking into account the
630 * protected RAM at top of memory
638 pram = getenv_ulong("pram", 10, CONFIG_PRAM);
640 # if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR)
641 /* Also take the logbuffer into account (pram is in kB) */
642 pram += (LOGBUFF_LEN + LOGBUFF_OVERHEAD) / 1024;
644 sprintf(memsz, "%ldk", (long int) ((gd->ram_size / 1024) - pram));
645 setenv("mem", memsz);
651 #ifdef CONFIG_CMD_BEDBUG
652 static int initr_bedbug(void)
661 static int initr_kbd(void)
669 static int run_main_loop(void)
671 #ifdef CONFIG_SANDBOX
672 sandbox_main_loop_init();
674 /* main_loop() can return to retry autoboot, if so just run it again */
681 * Over time we hope to remove these functions with code fragments and
682 * stub funtcions, and instead call the relevant function directly.
684 * We also hope to remove most of the driver-related init and do it if/when
685 * the driver is later used.
687 * TODO: perhaps reset the watchdog in the initcall function after each call?
689 init_fnc_t init_sequence_r[] = {
692 /* TODO: could x86/PPC have this also perhaps? */
696 initr_reloc_global_data,
697 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
698 initr_unlock_ram_in_cache,
707 board_init, /* Setup chipselects */
710 * TODO: printing of the clock inforamtion of the board is now
711 * implemented as part of bdinfo command. Currently only support for
712 * davinci SOC's is added. Remove this check once all the board
716 set_cpu_clk_info, /* Setup clock information */
721 INIT_FUNC_WATCHDOG_RESET
725 #ifdef CONFIG_ADDR_MAP
728 #if defined(CONFIG_BOARD_EARLY_INIT_R)
731 INIT_FUNC_WATCHDOG_RESET
732 #ifdef CONFIG_LOGBUFFER
738 INIT_FUNC_WATCHDOG_RESET
739 #ifdef CONFIG_SYS_DELAYED_ICACHE
742 #if defined(CONFIG_PCI) && defined(CONFIG_SYS_EARLY_PCI_INIT)
744 * Do early PCI configuration _before_ the flash gets initialised,
745 * because PCU ressources are crucial for flash access on some boards.
749 #ifdef CONFIG_WINBOND_83C553
752 #ifdef CONFIG_ARCH_EARLY_INIT_R
756 #ifndef CONFIG_SYS_NO_FLASH
759 INIT_FUNC_WATCHDOG_RESET
760 #if defined(CONFIG_PPC)
761 /* initialize higher level parts of CPU like time base and timers */
767 #if defined(CONFIG_X86) && defined(CONFIG_SPI)
770 #ifdef CONFIG_CMD_NAND
773 #ifdef CONFIG_CMD_ONENAND
776 #ifdef CONFIG_GENERIC_MMC
779 #ifdef CONFIG_HAS_DATAFLASH
783 INIT_FUNC_WATCHDOG_RESET
786 initr_sc3_read_eeprom,
788 #if defined(CONFIG_ID_EEPROM) || defined(CONFIG_SYS_I2C_MAC_OFFSET)
789 mac_read_from_eeprom,
791 INIT_FUNC_WATCHDOG_RESET
792 #if defined(CONFIG_PCI) && !defined(CONFIG_SYS_EARLY_PCI_INIT)
794 * Do pci configuration
803 console_init_r, /* fully init console as a device */
804 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
807 #ifdef CONFIG_ARCH_MISC_INIT
808 arch_misc_init, /* miscellaneous arch-dependent init */
810 #ifdef CONFIG_MISC_INIT_R
811 misc_init_r, /* miscellaneous platform-dependent init */
813 INIT_FUNC_WATCHDOG_RESET
814 #ifdef CONFIG_CMD_KGDB
818 #if defined(CONFIG_ARM)
819 initr_enable_interrupts,
822 timer_init, /* initialize timer */
824 #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
827 /* PPC has a udelay(20) here dating from 2002. Why? */
828 #ifdef CONFIG_CMD_NET
831 #ifdef CONFIG_BOARD_LATE_INIT
834 #ifdef CONFIG_CMD_SCSI
835 INIT_FUNC_WATCHDOG_RESET
838 #ifdef CONFIG_CMD_DOC
839 INIT_FUNC_WATCHDOG_RESET
842 #ifdef CONFIG_BITBANGMII
845 #ifdef CONFIG_CMD_NET
846 INIT_FUNC_WATCHDOG_RESET
852 #if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_CMD_IDE)
855 #if defined(CONFIG_CMD_IDE)
858 #ifdef CONFIG_LAST_STAGE_INIT
859 INIT_FUNC_WATCHDOG_RESET
861 * Some parts can be only initialized if all others (like
862 * Interrupts) are up and running (i.e. the PC-style ISA
867 #ifdef CONFIG_CMD_BEDBUG
868 INIT_FUNC_WATCHDOG_RESET
871 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
880 void board_init_r(gd_t *new_gd, ulong dest_addr)
882 #ifdef CONFIG_NEEDS_MANUAL_RELOC
886 #if !defined(CONFIG_X86) && !defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
890 #ifdef CONFIG_NEEDS_MANUAL_RELOC
891 for (i = 0; i < ARRAY_SIZE(init_sequence_r); i++)
892 init_sequence_r[i] += gd->reloc_off;
895 if (initcall_run_list(init_sequence_r))
898 /* NOTREACHED - run_main_loop() does not return */