/* * U-boot - board.c First C file to be called contains init routines * * Copyright (c) 2005 blackfin.uclinux.org * * (C) Copyright 2000-2004 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ #include <common.h> #include <command.h> #include <malloc.h> #include <devices.h> #include <version.h> #include <net.h> #include <environment.h> #include "blackfin_board.h" #include "../drivers/smc91111.h" DECLARE_GLOBAL_DATA_PTR; extern flash_info_t flash_info[]; static void mem_malloc_init(void) { mem_malloc_start = CFG_MALLOC_BASE; mem_malloc_end = (CFG_MALLOC_BASE + CFG_MALLOC_LEN); mem_malloc_brk = mem_malloc_start; memset((void *) mem_malloc_start, 0, mem_malloc_end - mem_malloc_start); } void *sbrk(ptrdiff_t increment) { ulong old = mem_malloc_brk; ulong new = old + increment; if ((new < mem_malloc_start) || (new > mem_malloc_end)) { return (NULL); } mem_malloc_brk = new; return ((void *) old); } static int display_banner(void) { sprintf(version_string, VERSION_STRING_FORMAT, VERSION_STRING); printf("%s\n", version_string); return (0); } static void display_flash_config(ulong size) { puts("FLASH: "); print_size(size, "\n"); return; } static int init_baudrate(void) { uchar tmp[64]; int i = getenv_r("baudrate", tmp, sizeof(tmp)); gd->bd->bi_baudrate = gd->baudrate = (i > 0) ? (int) simple_strtoul(tmp, NULL, 10) : CONFIG_BAUDRATE; return (0); } #ifdef DEBUG static void display_global_data(void) { bd_t *bd; bd = gd->bd; printf("--flags:%x\n", gd->flags); printf("--board_type:%x\n", gd->board_type); printf("--baudrate:%x\n", gd->baudrate); printf("--have_console:%x\n", gd->have_console); printf("--ram_size:%x\n", gd->ram_size); printf("--reloc_off:%x\n", gd->reloc_off); printf("--env_addr:%x\n", gd->env_addr); printf("--env_valid:%x\n", gd->env_valid); printf("--bd:%x %x\n", gd->bd, bd); printf("---bi_baudrate:%x\n", bd->bi_baudrate); printf("---bi_ip_addr:%x\n", bd->bi_ip_addr); printf("---bi_enetaddr:%x %x %x %x %x %x\n", bd->bi_enetaddr[0], bd->bi_enetaddr[1], bd->bi_enetaddr[2], bd->bi_enetaddr[3], bd->bi_enetaddr[4], bd->bi_enetaddr[5]); printf("---bi_arch_number:%x\n", bd->bi_arch_number); printf("---bi_boot_params:%x\n", bd->bi_boot_params); printf("---bi_memstart:%x\n", bd->bi_memstart); printf("---bi_memsize:%x\n", bd->bi_memsize); printf("---bi_flashstart:%x\n", bd->bi_flashstart); printf("---bi_flashsize:%x\n", bd->bi_flashsize); printf("---bi_flashoffset:%x\n", bd->bi_flashoffset); printf("--jt:%x *:%x\n", gd->jt, *(gd->jt)); } #endif /* * All attempts to come up with a "common" initialization sequence * that works for all boards and architectures failed: some of the * requirements are just _too_ different. To get rid of the resulting * mess of board dependend #ifdef'ed code we now make the whole * initialization sequence configurable to the user. * * The requirements for any new initalization function is simple: it * receives a pointer to the "global data" structure as it's only * argument, and returns an integer return code, where 0 means * "continue" and != 0 means "fatal error, hang the system". */ void board_init_f(ulong bootflag) { ulong addr; bd_t *bd; gd = (gd_t *) (CFG_GBL_DATA_ADDR); memset((void *) gd, 0, sizeof(gd_t)); /* Board data initialization */ addr = (CFG_GBL_DATA_ADDR + sizeof(gd_t)); /* Align to 4 byte boundary */ addr &= ~(4 - 1); bd = (bd_t*)addr; gd->bd = bd; memset((void *) bd, 0, sizeof(bd_t)); /* Initialize */ init_IRQ(); env_init(); /* initialize environment */ init_baudrate(); /* initialze baudrate settings */ serial_init(); /* serial communications setup */ console_init_f(); display_banner(); /* say that we are here */ checkboard(); #if defined(CONFIG_RTC_BF533) && (CONFIG_COMMANDS & CFG_CMD_DATE) rtc_init(); #endif timer_init(); printf("Clock: VCO: %lu MHz, Core: %lu MHz, System: %lu MHz\n", \ CONFIG_VCO_HZ/1000000, CONFIG_CCLK_HZ/1000000, CONFIG_SCLK_HZ/1000000); printf("SDRAM: "); print_size(initdram(0), "\n"); board_init_r((gd_t *) gd, 0x20000010); } void board_init_r(gd_t * id, ulong dest_addr) { ulong size; extern void malloc_bin_reloc(void); char *s, *e; bd_t *bd; int i; gd = id; gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */ bd = gd->bd; #if CONFIG_STAMP /* There are some other pointer constants we must deal with */ /* configure available FLASH banks */ size = flash_init(); display_flash_config(size); flash_protect(FLAG_PROTECT_SET, CFG_FLASH_BASE, CFG_FLASH_BASE + 0x1ffff, &flash_info[0]); bd->bi_flashstart = CFG_FLASH_BASE; bd->bi_flashsize = size; bd->bi_flashoffset = 0; #else bd->bi_flashstart = 0; bd->bi_flashsize = 0; bd->bi_flashoffset = 0; #endif /* initialize malloc() area */ mem_malloc_init(); malloc_bin_reloc(); /* relocate environment function pointers etc. */ env_relocate(); /* board MAC address */ s = getenv("ethaddr"); for (i = 0; i < 6; ++i) { bd->bi_enetaddr[i] = s ? simple_strtoul(s, &e, 16) : 0; if (s) s = (*e) ? e + 1 : e; } /* IP Address */ bd->bi_ip_addr = getenv_IPaddr("ipaddr"); /* Initialize devices */ devices_init(); jumptable_init(); /* Initialize the console (after the relocation and devices init) */ console_init_r(); /* Initialize from environment */ if ((s = getenv("loadaddr")) != NULL) { load_addr = simple_strtoul(s, NULL, 16); } #if (CONFIG_COMMANDS & CFG_CMD_NET) if ((s = getenv("bootfile")) != NULL) { copy_filename(BootFile, s, sizeof(BootFile)); } #endif #if defined(CONFIG_MISC_INIT_R) /* miscellaneous platform dependent initialisations */ misc_init_r(); #endif #ifdef CONFIG_DRIVER_SMC91111 #ifdef SHARED_RESOURCES /* Switch to Ethernet */ swap_to(ETHERNET); #endif if ( (SMC_inw(BANK_SELECT) & UPPER_BYTE_MASK) != SMC_IDENT ) { printf("ERROR: Can't find SMC91111 at address %x\n", SMC_BASE_ADDRESS); } else { printf("Net: SMC91111 at 0x%08X\n", SMC_BASE_ADDRESS); } #ifdef SHARED_RESOURCES swap_to(FLASH); #endif #endif #ifdef CONFIG_SOFT_I2C init_func_i2c(); #endif #ifdef DEBUG display_global_data(void); #endif /* main_loop() can return to retry autoboot, if so just run it again. */ for (;;) { main_loop(); } } #ifdef CONFIG_SOFT_I2C static int init_func_i2c (void) { puts ("I2C: "); i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE); puts ("ready\n"); return (0); } #endif void hang(void) { puts("### ERROR ### Please RESET the board ###\n"); for (;;); }