/* * Copyright (c) 2011 The Chromium OS Authors. * (C) Copyright 2002-2006 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * (C) Copyright 2002 * Sysgo Real-Time Solutions, GmbH * Marius Groeger * * SPDX-License-Identifier: GPL-2.0+ */ #include /* TODO: can we just include all these headers whether needed or not? */ #if defined(CONFIG_CMD_BEDBUG) #include #endif #ifdef CONFIG_HAS_DATAFLASH #include #endif #include #include #include #if defined(CONFIG_CMD_IDE) #include #endif #include #ifdef CONFIG_PS2KBD #include #endif #if defined(CONFIG_CMD_KGDB) #include #endif #include #include #ifdef CONFIG_BITBANGMII #include #endif #include #include #include #include #include #include #include #include #include #ifdef CONFIG_ADDR_MAP #include #endif #include #ifdef CONFIG_X86 #include #endif #include #include #include DECLARE_GLOBAL_DATA_PTR; ulong monitor_flash_len; int __board_flash_wp_on(void) { /* * Most flashes can't be detected when write protection is enabled, * so provide a way to let U-Boot gracefully ignore write protected * devices. */ return 0; } int board_flash_wp_on(void) __attribute__ ((weak, alias("__board_flash_wp_on"))); void __cpu_secondary_init_r(void) { } void cpu_secondary_init_r(void) __attribute__ ((weak, alias("__cpu_secondary_init_r"))); static int initr_secondary_cpu(void) { /* * after non-volatile devices & environment is setup and cpu code have * another round to deal with any initialization that might require * full access to the environment or loading of some image (firmware) * from a non-volatile device */ /* TODO: maybe define this for all archs? */ cpu_secondary_init_r(); return 0; } static int initr_trace(void) { #ifdef CONFIG_TRACE trace_init(gd->trace_buff, CONFIG_TRACE_BUFFER_SIZE); #endif return 0; } static int initr_reloc(void) { gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */ bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r"); return 0; } #ifdef CONFIG_ARM /* * Some of these functions are needed purely because the functions they * call return void. If we change them to return 0, these stubs can go away. */ static int initr_caches(void) { /* Enable caches */ enable_caches(); return 0; } #endif __weak int fixup_cpu(void) { return 0; } static int initr_reloc_global_data(void) { #ifdef __ARM__ monitor_flash_len = _end - __image_copy_start; #elif !defined(CONFIG_SANDBOX) && !defined(CONFIG_NIOS2) monitor_flash_len = (ulong)&__init_end - gd->relocaddr; #endif #if defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx) /* * The gd->cpu pointer is set to an address in flash before relocation. * We need to update it to point to the same CPU entry in RAM. * TODO: why not just add gd->reloc_ofs? */ gd->arch.cpu += gd->relocaddr - CONFIG_SYS_MONITOR_BASE; /* * If we didn't know the cpu mask & # cores, we can save them of * now rather than 'computing' them constantly */ fixup_cpu(); #endif #ifdef CONFIG_SYS_EXTRA_ENV_RELOC /* * Some systems need to relocate the env_addr pointer early because the * location it points to will get invalidated before env_relocate is * called. One example is on systems that might use a L2 or L3 cache * in SRAM mode and initialize that cache from SRAM mode back to being * a cache in cpu_init_r. */ gd->env_addr += gd->relocaddr - CONFIG_SYS_MONITOR_BASE; #endif return 0; } static int initr_serial(void) { serial_initialize(); return 0; } #ifdef CONFIG_PPC static int initr_trap(void) { /* * Setup trap handlers */ trap_init(gd->relocaddr); return 0; } #endif #ifdef CONFIG_ADDR_MAP static int initr_addr_map(void) { init_addr_map(); return 0; } #endif #ifdef CONFIG_LOGBUFFER unsigned long logbuffer_base(void) { return gd->ram_top - LOGBUFF_LEN; } static int initr_logbuffer(void) { logbuff_init_ptrs(); return 0; } #endif #ifdef CONFIG_POST static int initr_post_backlog(void) { post_output_backlog(); return 0; } #endif #ifdef CONFIG_SYS_DELAYED_ICACHE static int initr_icache_enable(void) { return 0; } #endif #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500) static int initr_unlock_ram_in_cache(void) { unlock_ram_in_cache(); /* it's time to unlock D-cache in e500 */ return 0; } #endif #ifdef CONFIG_PCI static int initr_pci(void) { pci_init(); return 0; } #endif #ifdef CONFIG_WINBOND_83C553 static int initr_w83c553f(void) { /* * Initialise the ISA bridge */ initialise_w83c553f(); return 0; } #endif static int initr_barrier(void) { #ifdef CONFIG_PPC /* TODO: Can we not use dmb() macros for this? */ asm("sync ; isync"); #endif return 0; } static int initr_malloc(void) { ulong malloc_start; #ifdef CONFIG_SYS_MALLOC_F_LEN debug("Pre-reloc malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr, gd->malloc_ptr / 1024); #endif /* The malloc area is immediately below the monitor copy in DRAM */ malloc_start = gd->relocaddr - TOTAL_MALLOC_LEN; mem_malloc_init((ulong)map_sysmem(malloc_start, TOTAL_MALLOC_LEN), TOTAL_MALLOC_LEN); return 0; } #ifdef CONFIG_DM static int initr_dm(void) { /* Save the pre-reloc driver model and start a new one */ gd->dm_root_f = gd->dm_root; gd->dm_root = NULL; return dm_init_and_scan(false); } #endif __weak int power_init_board(void) { return 0; } static int initr_announce(void) { debug("Now running in RAM - U-Boot at: %08lx\n", gd->relocaddr); return 0; } #if !defined(CONFIG_SYS_NO_FLASH) static int initr_flash(void) { ulong flash_size = 0; bd_t *bd = gd->bd; int ok; puts("Flash: "); if (board_flash_wp_on()) { printf("Uninitialized - Write Protect On\n"); /* Since WP is on, we can't find real size. Set to 0 */ ok = 1; } else { flash_size = flash_init(); ok = flash_size > 0; } if (!ok) { puts("*** failed ***\n"); #ifdef CONFIG_PPC /* Why does PPC do this? */ hang(); #endif return -1; } print_size(flash_size, ""); #ifdef CONFIG_SYS_FLASH_CHECKSUM /* * Compute and print flash CRC if flashchecksum is set to 'y' * * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX */ if (getenv_yesno("flashchecksum") == 1) { printf(" CRC: %08X", crc32(0, (const unsigned char *) CONFIG_SYS_FLASH_BASE, flash_size)); } #endif /* CONFIG_SYS_FLASH_CHECKSUM */ putc('\n'); /* update start of FLASH memory */ #ifdef CONFIG_SYS_FLASH_BASE bd->bi_flashstart = CONFIG_SYS_FLASH_BASE; #endif /* size of FLASH memory (final value) */ bd->bi_flashsize = flash_size; #if defined(CONFIG_SYS_UPDATE_FLASH_SIZE) /* Make a update of the Memctrl. */ update_flash_size(flash_size); #endif #if defined(CONFIG_OXC) || defined(CONFIG_RMU) /* flash mapped at end of memory map */ bd->bi_flashoffset = CONFIG_SYS_TEXT_BASE + flash_size; #elif CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE bd->bi_flashoffset = monitor_flash_len; /* reserved area for monitor */ #endif return 0; } #endif #ifdef CONFIG_PPC static int initr_spi(void) { /* PPC does this here */ #ifdef CONFIG_SPI #if !defined(CONFIG_ENV_IS_IN_EEPROM) spi_init_f(); #endif spi_init_r(); #endif return 0; } #endif #ifdef CONFIG_CMD_NAND /* go init the NAND */ int initr_nand(void) { puts("NAND: "); nand_init(); return 0; } #endif #if defined(CONFIG_CMD_ONENAND) /* go init the NAND */ int initr_onenand(void) { puts("NAND: "); onenand_init(); return 0; } #endif #ifdef CONFIG_GENERIC_MMC int initr_mmc(void) { puts("MMC: "); mmc_initialize(gd->bd); return 0; } #endif #ifdef CONFIG_HAS_DATAFLASH int initr_dataflash(void) { AT91F_DataflashInit(); dataflash_print_info(); return 0; } #endif /* * Tell if it's OK to load the environment early in boot. * * If CONFIG_OF_CONFIG is defined, we'll check with the FDT to see * if this is OK (defaulting to saying it's OK). * * NOTE: Loading the environment early can be a bad idea if security is * important, since no verification is done on the environment. * * @return 0 if environment should not be loaded, !=0 if it is ok to load */ static int should_load_env(void) { #ifdef CONFIG_OF_CONTROL return fdtdec_get_config_int(gd->fdt_blob, "load-environment", 1); #elif defined CONFIG_DELAY_ENVIRONMENT return 0; #else return 1; #endif } static int initr_env(void) { /* initialize environment */ if (should_load_env()) env_relocate(); else set_default_env(NULL); /* Initialize from environment */ load_addr = getenv_ulong("loadaddr", 16, load_addr); #if defined(CONFIG_SYS_EXTBDINFO) #if defined(CONFIG_405GP) || defined(CONFIG_405EP) #if defined(CONFIG_I2CFAST) /* * set bi_iic_fast for linux taking environment variable * "i2cfast" into account */ { char *s = getenv("i2cfast"); if (s && ((*s == 'y') || (*s == 'Y'))) { gd->bd->bi_iic_fast[0] = 1; gd->bd->bi_iic_fast[1] = 1; } } #endif /* CONFIG_I2CFAST */ #endif /* CONFIG_405GP, CONFIG_405EP */ #endif /* CONFIG_SYS_EXTBDINFO */ return 0; } #ifdef CONFIG_HERMES static int initr_hermes(void) { if ((gd->board_type >> 16) == 2) gd->bd->bi_ethspeed = gd->board_type & 0xFFFF; else gd->bd->bi_ethspeed = 0xFFFF; return 0; } static int initr_hermes_start(void) { if (gd->bd->bi_ethspeed != 0xFFFF) hermes_start_lxt980((int) gd->bd->bi_ethspeed); return 0; } #endif #ifdef CONFIG_SC3 /* TODO: with new initcalls, move this into the driver */ extern void sc3_read_eeprom(void); static int initr_sc3_read_eeprom(void) { sc3_read_eeprom(); return 0; } #endif static int initr_jumptable(void) { jumptable_init(); return 0; } #if defined(CONFIG_API) static int initr_api(void) { /* Initialize API */ api_init(); return 0; } #endif #ifdef CONFIG_DISPLAY_BOARDINFO_LATE static int show_model_r(void) { /* Put this here so it appears on the LCD, now it is ready */ # ifdef CONFIG_OF_CONTROL const char *model; model = (char *)fdt_getprop(gd->fdt_blob, 0, "model", NULL); printf("Model: %s\n", model ? model : ""); # else checkboard(); # endif return 0; } #endif /* enable exceptions */ #ifdef CONFIG_ARM static int initr_enable_interrupts(void) { enable_interrupts(); return 0; } #endif #ifdef CONFIG_CMD_NET static int initr_ethaddr(void) { bd_t *bd = gd->bd; /* kept around for legacy kernels only ... ignore the next section */ eth_getenv_enetaddr("ethaddr", bd->bi_enetaddr); #ifdef CONFIG_HAS_ETH1 eth_getenv_enetaddr("eth1addr", bd->bi_enet1addr); #endif #ifdef CONFIG_HAS_ETH2 eth_getenv_enetaddr("eth2addr", bd->bi_enet2addr); #endif #ifdef CONFIG_HAS_ETH3 eth_getenv_enetaddr("eth3addr", bd->bi_enet3addr); #endif #ifdef CONFIG_HAS_ETH4 eth_getenv_enetaddr("eth4addr", bd->bi_enet4addr); #endif #ifdef CONFIG_HAS_ETH5 eth_getenv_enetaddr("eth5addr", bd->bi_enet5addr); #endif return 0; } #endif /* CONFIG_CMD_NET */ #ifdef CONFIG_CMD_KGDB static int initr_kgdb(void) { puts("KGDB: "); kgdb_init(); return 0; } #endif #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT) static int initr_status_led(void) { status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING); return 0; } #endif #if defined(CONFIG_CMD_SCSI) static int initr_scsi(void) { puts("SCSI: "); scsi_init(); return 0; } #endif #if defined(CONFIG_CMD_DOC) static int initr_doc(void) { puts("DOC: "); doc_init(); return 0; } #endif #ifdef CONFIG_BITBANGMII static int initr_bbmii(void) { bb_miiphy_init(); return 0; } #endif #ifdef CONFIG_CMD_NET static int initr_net(void) { puts("Net: "); eth_initialize(gd->bd); #if defined(CONFIG_RESET_PHY_R) debug("Reset Ethernet PHY\n"); reset_phy(); #endif return 0; } #endif #ifdef CONFIG_POST static int initr_post(void) { post_run(NULL, POST_RAM | post_bootmode_get(0)); return 0; } #endif #if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_CMD_IDE) static int initr_pcmcia(void) { puts("PCMCIA:"); pcmcia_init(); return 0; } #endif #if defined(CONFIG_CMD_IDE) static int initr_ide(void) { #ifdef CONFIG_IDE_8xx_PCCARD puts("PCMCIA:"); #else puts("IDE: "); #endif #if defined(CONFIG_START_IDE) if (board_start_ide()) ide_init(); #else ide_init(); #endif return 0; } #endif #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER) /* * Export available size of memory for Linux, taking into account the * protected RAM at top of memory */ int initr_mem(void) { ulong pram = 0; char memsz[32]; # ifdef CONFIG_PRAM pram = getenv_ulong("pram", 10, CONFIG_PRAM); # endif # if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR) /* Also take the logbuffer into account (pram is in kB) */ pram += (LOGBUFF_LEN + LOGBUFF_OVERHEAD) / 1024; # endif sprintf(memsz, "%ldk", (gd->ram_size / 1024) - pram); setenv("mem", memsz); return 0; } #endif #ifdef CONFIG_CMD_BEDBUG static int initr_bedbug(void) { bedbug_init(); return 0; } #endif #ifdef CONFIG_PS2KBD static int initr_kbd(void) { puts("PS/2: "); kbd_init(); return 0; } #endif static int run_main_loop(void) { #ifdef CONFIG_SANDBOX sandbox_main_loop_init(); #endif /* main_loop() can return to retry autoboot, if so just run it again */ for (;;) main_loop(); return 0; } /* * Over time we hope to remove these functions with code fragments and * stub funtcions, and instead call the relevant function directly. * * We also hope to remove most of the driver-related init and do it if/when * the driver is later used. * * TODO: perhaps reset the watchdog in the initcall function after each call? */ init_fnc_t init_sequence_r[] = { initr_trace, initr_reloc, /* TODO: could x86/PPC have this also perhaps? */ #ifdef CONFIG_ARM initr_caches, #endif initr_reloc_global_data, #if defined(CONFIG_SYS_INIT_RAM_LOCK) && defined(CONFIG_E500) initr_unlock_ram_in_cache, #endif initr_barrier, initr_malloc, bootstage_relocate, #ifdef CONFIG_DM initr_dm, #endif #ifdef CONFIG_ARM board_init, /* Setup chipselects */ #endif /* * TODO: printing of the clock inforamtion of the board is now * implemented as part of bdinfo command. Currently only support for * davinci SOC's is added. Remove this check once all the board * implement this. */ #ifdef CONFIG_CLOCKS set_cpu_clk_info, /* Setup clock information */ #endif stdio_init_tables, initr_serial, initr_announce, INIT_FUNC_WATCHDOG_RESET #ifdef CONFIG_PPC initr_trap, #endif #ifdef CONFIG_ADDR_MAP initr_addr_map, #endif #if defined(CONFIG_BOARD_EARLY_INIT_R) board_early_init_r, #endif INIT_FUNC_WATCHDOG_RESET #ifdef CONFIG_LOGBUFFER initr_logbuffer, #endif #ifdef CONFIG_POST initr_post_backlog, #endif INIT_FUNC_WATCHDOG_RESET #ifdef CONFIG_SYS_DELAYED_ICACHE initr_icache_enable, #endif #if defined(CONFIG_PCI) && defined(CONFIG_SYS_EARLY_PCI_INIT) /* * Do early PCI configuration _before_ the flash gets initialised, * because PCU ressources are crucial for flash access on some boards. */ initr_pci, #endif #ifdef CONFIG_WINBOND_83C553 initr_w83c553f, #endif #ifdef CONFIG_ARCH_EARLY_INIT_R arch_early_init_r, #endif power_init_board, #ifndef CONFIG_SYS_NO_FLASH initr_flash, #endif INIT_FUNC_WATCHDOG_RESET #if defined(CONFIG_PPC) || defined(CONFIG_X86) /* initialize higher level parts of CPU like time base and timers */ cpu_init_r, #endif #ifdef CONFIG_PPC initr_spi, #endif #if defined(CONFIG_X86) && defined(CONFIG_SPI) init_func_spi, #endif #ifdef CONFIG_CMD_NAND initr_nand, #endif #ifdef CONFIG_CMD_ONENAND initr_onenand, #endif #ifdef CONFIG_GENERIC_MMC initr_mmc, #endif #ifdef CONFIG_HAS_DATAFLASH initr_dataflash, #endif initr_env, INIT_FUNC_WATCHDOG_RESET initr_secondary_cpu, #ifdef CONFIG_SC3 initr_sc3_read_eeprom, #endif #ifdef CONFIG_HERMES initr_hermes, #endif #if defined(CONFIG_ID_EEPROM) || defined(CONFIG_SYS_I2C_MAC_OFFSET) mac_read_from_eeprom, #endif INIT_FUNC_WATCHDOG_RESET #if defined(CONFIG_PCI) && !defined(CONFIG_SYS_EARLY_PCI_INIT) /* * Do pci configuration */ initr_pci, #endif stdio_add_devices, initr_jumptable, #ifdef CONFIG_API initr_api, #endif console_init_r, /* fully init console as a device */ #ifdef CONFIG_DISPLAY_BOARDINFO_LATE show_model_r, #endif #ifdef CONFIG_ARCH_MISC_INIT arch_misc_init, /* miscellaneous arch-dependent init */ #endif #ifdef CONFIG_MISC_INIT_R misc_init_r, /* miscellaneous platform-dependent init */ #endif #ifdef CONFIG_HERMES initr_hermes_start, #endif INIT_FUNC_WATCHDOG_RESET #ifdef CONFIG_CMD_KGDB initr_kgdb, #endif #ifdef CONFIG_X86 board_early_init_r, #endif interrupt_init, #if defined(CONFIG_ARM) || defined(CONFIG_x86) initr_enable_interrupts, #endif #ifdef CONFIG_X86 timer_init, /* initialize timer */ #endif #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT) initr_status_led, #endif /* PPC has a udelay(20) here dating from 2002. Why? */ #ifdef CONFIG_CMD_NET initr_ethaddr, #endif #ifdef CONFIG_BOARD_LATE_INIT board_late_init, #endif #ifdef CONFIG_CMD_SCSI INIT_FUNC_WATCHDOG_RESET initr_scsi, #endif #ifdef CONFIG_CMD_DOC INIT_FUNC_WATCHDOG_RESET initr_doc, #endif #ifdef CONFIG_BITBANGMII initr_bbmii, #endif #ifdef CONFIG_CMD_NET INIT_FUNC_WATCHDOG_RESET initr_net, #endif #ifdef CONFIG_POST initr_post, #endif #if defined(CONFIG_CMD_PCMCIA) && !defined(CONFIG_CMD_IDE) initr_pcmcia, #endif #if defined(CONFIG_CMD_IDE) initr_ide, #endif #ifdef CONFIG_LAST_STAGE_INIT INIT_FUNC_WATCHDOG_RESET /* * Some parts can be only initialized if all others (like * Interrupts) are up and running (i.e. the PC-style ISA * keyboard). */ last_stage_init, #endif #ifdef CONFIG_CMD_BEDBUG INIT_FUNC_WATCHDOG_RESET initr_bedbug, #endif #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER) initr_mem, #endif #ifdef CONFIG_PS2KBD initr_kbd, #endif run_main_loop, }; void board_init_r(gd_t *new_gd, ulong dest_addr) { #ifdef CONFIG_NEEDS_MANUAL_RELOC int i; #endif #if !defined(CONFIG_X86) && !defined(CONFIG_ARM) && !defined(CONFIG_ARM64) gd = new_gd; #endif #ifdef CONFIG_NEEDS_MANUAL_RELOC for (i = 0; i < ARRAY_SIZE(init_sequence_r); i++) init_sequence_r[i] += gd->reloc_off; #endif if (initcall_run_list(init_sequence_r)) hang(); /* NOTREACHED - run_main_loop() does not return */ hang(); }