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)
171 static int initr_trap(void)
174 * Setup trap handlers
176 trap_init(gd->relocaddr);
182 #ifdef CONFIG_ADDR_MAP
183 static int initr_addr_map(void)
191 #ifdef CONFIG_LOGBUFFER
192 unsigned long logbuffer_base(void)
194 return gd->ram_top - LOGBUFF_LEN;
197 static int initr_logbuffer(void)
205 static int initr_post_backlog(void)
207 post_output_backlog();
212 #ifdef CONFIG_SYS_DELAYED_ICACHE
213 static int initr_icache_enable(void)
219 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
220 static int initr_unlock_ram_in_cache(void)
222 unlock_ram_in_cache(); /* it's time to unlock D-cache in e500 */
228 static int initr_pci(void)
236 #ifdef CONFIG_WINBOND_83C553
237 static int initr_w83c553f(void)
240 * Initialise the ISA bridge
242 initialise_w83c553f();
247 static int initr_barrier(void)
250 /* TODO: Can we not use dmb() macros for this? */
256 static int initr_malloc(void)
260 #ifdef CONFIG_SYS_MALLOC_F_LEN
261 debug("Pre-reloc malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr,
262 gd->malloc_ptr / 1024);
264 /* The malloc area is immediately below the monitor copy in DRAM */
265 malloc_start = gd->relocaddr - TOTAL_MALLOC_LEN;
266 mem_malloc_init((ulong)map_sysmem(malloc_start, TOTAL_MALLOC_LEN),
271 #ifdef CONFIG_SYS_NONCACHED_MEMORY
272 static int initr_noncached(void)
280 static int initr_dm(void)
282 /* Save the pre-reloc driver model and start a new one */
283 gd->dm_root_f = gd->dm_root;
285 return dm_init_and_scan(false);
289 __weak int power_init_board(void)
294 static int initr_announce(void)
296 debug("Now running in RAM - U-Boot at: %08lx\n", gd->relocaddr);
300 #ifdef CONFIG_NEEDS_MANUAL_RELOC
301 static int initr_manual_reloc_cmdtable(void)
303 fixup_cmdtable(ll_entry_start(cmd_tbl_t, cmd),
304 ll_entry_count(cmd_tbl_t, cmd));
309 #if !defined(CONFIG_SYS_NO_FLASH)
310 static int initr_flash(void)
312 ulong flash_size = 0;
317 if (board_flash_wp_on())
318 printf("Uninitialized - Write Protect On\n");
320 flash_size = flash_init();
322 print_size(flash_size, "");
323 #ifdef CONFIG_SYS_FLASH_CHECKSUM
325 * Compute and print flash CRC if flashchecksum is set to 'y'
327 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
329 if (getenv_yesno("flashchecksum") == 1) {
330 printf(" CRC: %08X", crc32(0,
331 (const unsigned char *) CONFIG_SYS_FLASH_BASE,
334 #endif /* CONFIG_SYS_FLASH_CHECKSUM */
337 /* update start of FLASH memory */
338 #ifdef CONFIG_SYS_FLASH_BASE
339 bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
341 /* size of FLASH memory (final value) */
342 bd->bi_flashsize = flash_size;
344 #if defined(CONFIG_SYS_UPDATE_FLASH_SIZE)
345 /* Make a update of the Memctrl. */
346 update_flash_size(flash_size);
350 #if defined(CONFIG_OXC) || defined(CONFIG_RMU)
351 /* flash mapped at end of memory map */
352 bd->bi_flashoffset = CONFIG_SYS_TEXT_BASE + flash_size;
353 #elif CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
354 bd->bi_flashoffset = monitor_flash_len; /* reserved area for monitor */
360 #if defined(CONFIG_PPC) && !defined(CONFIG_DM_SPI)
361 static int initr_spi(void)
363 /* PPC does this here */
365 #if !defined(CONFIG_ENV_IS_IN_EEPROM)
374 #ifdef CONFIG_CMD_NAND
375 /* go init the NAND */
376 static int initr_nand(void)
384 #if defined(CONFIG_CMD_ONENAND)
385 /* go init the NAND */
386 static int initr_onenand(void)
394 #ifdef CONFIG_GENERIC_MMC
395 static int initr_mmc(void)
398 mmc_initialize(gd->bd);
403 #ifdef CONFIG_HAS_DATAFLASH
404 static int initr_dataflash(void)
406 AT91F_DataflashInit();
407 dataflash_print_info();
413 * Tell if it's OK to load the environment early in boot.
415 * If CONFIG_OF_CONFIG is defined, we'll check with the FDT to see
416 * if this is OK (defaulting to saying it's OK).
418 * NOTE: Loading the environment early can be a bad idea if security is
419 * important, since no verification is done on the environment.
421 * @return 0 if environment should not be loaded, !=0 if it is ok to load
423 static int should_load_env(void)
425 #ifdef CONFIG_OF_CONTROL
426 return fdtdec_get_config_int(gd->fdt_blob, "load-environment", 1);
427 #elif defined CONFIG_DELAY_ENVIRONMENT
434 static int initr_env(void)
436 /* initialize environment */
437 if (should_load_env())
440 set_default_env(NULL);
442 /* Initialize from environment */
443 load_addr = getenv_ulong("loadaddr", 16, load_addr);
444 #if defined(CONFIG_SYS_EXTBDINFO)
445 #if defined(CONFIG_405GP) || defined(CONFIG_405EP)
446 #if defined(CONFIG_I2CFAST)
448 * set bi_iic_fast for linux taking environment variable
449 * "i2cfast" into account
452 char *s = getenv("i2cfast");
454 if (s && ((*s == 'y') || (*s == 'Y'))) {
455 gd->bd->bi_iic_fast[0] = 1;
456 gd->bd->bi_iic_fast[1] = 1;
459 #endif /* CONFIG_I2CFAST */
460 #endif /* CONFIG_405GP, CONFIG_405EP */
461 #endif /* CONFIG_SYS_EXTBDINFO */
465 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
466 static int initr_malloc_bootparams(void)
468 gd->bd->bi_boot_params = (ulong)malloc(CONFIG_SYS_BOOTPARAMS_LEN);
469 if (!gd->bd->bi_boot_params) {
470 puts("WARNING: Cannot allocate space for boot parameters\n");
478 /* TODO: with new initcalls, move this into the driver */
479 extern void sc3_read_eeprom(void);
481 static int initr_sc3_read_eeprom(void)
488 static int initr_jumptable(void)
494 #if defined(CONFIG_API)
495 static int initr_api(void)
503 /* enable exceptions */
504 #if defined(CONFIG_ARM) || defined(CONFIG_AVR32)
505 static int initr_enable_interrupts(void)
512 #ifdef CONFIG_CMD_NET
513 static int initr_ethaddr(void)
517 /* kept around for legacy kernels only ... ignore the next section */
518 eth_getenv_enetaddr("ethaddr", bd->bi_enetaddr);
519 #ifdef CONFIG_HAS_ETH1
520 eth_getenv_enetaddr("eth1addr", bd->bi_enet1addr);
522 #ifdef CONFIG_HAS_ETH2
523 eth_getenv_enetaddr("eth2addr", bd->bi_enet2addr);
525 #ifdef CONFIG_HAS_ETH3
526 eth_getenv_enetaddr("eth3addr", bd->bi_enet3addr);
528 #ifdef CONFIG_HAS_ETH4
529 eth_getenv_enetaddr("eth4addr", bd->bi_enet4addr);
531 #ifdef CONFIG_HAS_ETH5
532 eth_getenv_enetaddr("eth5addr", bd->bi_enet5addr);
536 #endif /* CONFIG_CMD_NET */
538 #ifdef CONFIG_CMD_KGDB
539 static int initr_kgdb(void)
547 #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
548 static int initr_status_led(void)
550 status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING);
556 #if defined(CONFIG_CMD_SCSI)
557 static int initr_scsi(void)
566 #if defined(CONFIG_CMD_DOC)
567 static int initr_doc(void)
575 #ifdef CONFIG_BITBANGMII
576 static int initr_bbmii(void)
583 #ifdef CONFIG_CMD_NET
584 static int initr_net(void)
587 eth_initialize(gd->bd);
588 #if defined(CONFIG_RESET_PHY_R)
589 debug("Reset Ethernet PHY\n");
597 static int initr_post(void)
599 post_run(NULL, POST_RAM | post_bootmode_get(0));
604 #if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_CMD_IDE)
605 static int initr_pcmcia(void)
613 #if defined(CONFIG_CMD_IDE)
614 static int initr_ide(void)
616 #ifdef CONFIG_IDE_8xx_PCCARD
621 #if defined(CONFIG_START_IDE)
622 if (board_start_ide())
631 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
633 * Export available size of memory for Linux, taking into account the
634 * protected RAM at top of memory
642 pram = getenv_ulong("pram", 10, CONFIG_PRAM);
644 # if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR)
645 /* Also take the logbuffer into account (pram is in kB) */
646 pram += (LOGBUFF_LEN + LOGBUFF_OVERHEAD) / 1024;
648 sprintf(memsz, "%ldk", (long int) ((gd->ram_size / 1024) - pram));
649 setenv("mem", memsz);
655 #ifdef CONFIG_CMD_BEDBUG
656 static int initr_bedbug(void)
665 static int initr_kbd(void)
673 static int run_main_loop(void)
675 #ifdef CONFIG_SANDBOX
676 sandbox_main_loop_init();
678 /* main_loop() can return to retry autoboot, if so just run it again */
685 * Over time we hope to remove these functions with code fragments and
686 * stub funtcions, and instead call the relevant function directly.
688 * We also hope to remove most of the driver-related init and do it if/when
689 * the driver is later used.
691 * TODO: perhaps reset the watchdog in the initcall function after each call?
693 init_fnc_t init_sequence_r[] = {
696 /* TODO: could x86/PPC have this also perhaps? */
700 initr_reloc_global_data,
701 #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500)
702 initr_unlock_ram_in_cache,
706 #ifdef CONFIG_SYS_NONCACHED_MEMORY
714 board_init, /* Setup chipselects */
717 * TODO: printing of the clock inforamtion of the board is now
718 * implemented as part of bdinfo command. Currently only support for
719 * davinci SOC's is added. Remove this check once all the board
723 set_cpu_clk_info, /* Setup clock information */
728 INIT_FUNC_WATCHDOG_RESET
729 #ifdef CONFIG_NEEDS_MANUAL_RELOC
730 initr_manual_reloc_cmdtable,
735 #ifdef CONFIG_ADDR_MAP
738 #if defined(CONFIG_BOARD_EARLY_INIT_R)
741 INIT_FUNC_WATCHDOG_RESET
742 #ifdef CONFIG_LOGBUFFER
748 INIT_FUNC_WATCHDOG_RESET
749 #ifdef CONFIG_SYS_DELAYED_ICACHE
752 #if defined(CONFIG_PCI) && defined(CONFIG_SYS_EARLY_PCI_INIT)
754 * Do early PCI configuration _before_ the flash gets initialised,
755 * because PCU ressources are crucial for flash access on some boards.
759 #ifdef CONFIG_WINBOND_83C553
762 #ifdef CONFIG_ARCH_EARLY_INIT_R
766 #ifndef CONFIG_SYS_NO_FLASH
769 INIT_FUNC_WATCHDOG_RESET
770 #if defined(CONFIG_PPC)
771 /* initialize higher level parts of CPU like time base and timers */
777 #if defined(CONFIG_X86) && defined(CONFIG_SPI)
780 #ifdef CONFIG_CMD_NAND
783 #ifdef CONFIG_CMD_ONENAND
786 #ifdef CONFIG_GENERIC_MMC
789 #ifdef CONFIG_HAS_DATAFLASH
793 #ifdef CONFIG_SYS_BOOTPARAMS_LEN
794 initr_malloc_bootparams,
796 INIT_FUNC_WATCHDOG_RESET
799 initr_sc3_read_eeprom,
801 #if defined(CONFIG_ID_EEPROM) || defined(CONFIG_SYS_I2C_MAC_OFFSET)
802 mac_read_from_eeprom,
804 INIT_FUNC_WATCHDOG_RESET
805 #if defined(CONFIG_PCI) && !defined(CONFIG_SYS_EARLY_PCI_INIT)
807 * Do pci configuration
816 console_init_r, /* fully init console as a device */
817 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
820 #ifdef CONFIG_ARCH_MISC_INIT
821 arch_misc_init, /* miscellaneous arch-dependent init */
823 #ifdef CONFIG_MISC_INIT_R
824 misc_init_r, /* miscellaneous platform-dependent init */
826 INIT_FUNC_WATCHDOG_RESET
827 #ifdef CONFIG_CMD_KGDB
831 #if defined(CONFIG_ARM) || defined(CONFIG_AVR32)
832 initr_enable_interrupts,
834 #if defined(CONFIG_X86) || defined(CONFIG_MICROBLAZE) || defined(CONFIG_AVR32)
835 timer_init, /* initialize timer */
837 #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
840 /* PPC has a udelay(20) here dating from 2002. Why? */
841 #ifdef CONFIG_CMD_NET
844 #ifdef CONFIG_BOARD_LATE_INIT
847 #ifdef CONFIG_CMD_SCSI
848 INIT_FUNC_WATCHDOG_RESET
851 #ifdef CONFIG_CMD_DOC
852 INIT_FUNC_WATCHDOG_RESET
855 #ifdef CONFIG_BITBANGMII
858 #ifdef CONFIG_CMD_NET
859 INIT_FUNC_WATCHDOG_RESET
865 #if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_CMD_IDE)
868 #if defined(CONFIG_CMD_IDE)
871 #ifdef CONFIG_LAST_STAGE_INIT
872 INIT_FUNC_WATCHDOG_RESET
874 * Some parts can be only initialized if all others (like
875 * Interrupts) are up and running (i.e. the PC-style ISA
880 #ifdef CONFIG_CMD_BEDBUG
881 INIT_FUNC_WATCHDOG_RESET
884 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
893 void board_init_r(gd_t *new_gd, ulong dest_addr)
895 #ifdef CONFIG_NEEDS_MANUAL_RELOC
900 mmu_init_r(dest_addr);
903 #if !defined(CONFIG_X86) && !defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
907 #ifdef CONFIG_NEEDS_MANUAL_RELOC
908 for (i = 0; i < ARRAY_SIZE(init_sequence_r); i++)
909 init_sequence_r[i] += gd->reloc_off;
912 if (initcall_run_list(init_sequence_r))
915 /* NOTREACHED - run_main_loop() does not return */