diff options
Diffstat (limited to 'lib_blackfin/board.c')
| -rw-r--r-- | lib_blackfin/board.c | 282 |
1 files changed, 282 insertions, 0 deletions
diff --git a/lib_blackfin/board.c b/lib_blackfin/board.c new file mode 100644 index 000000000..55d13fad8 --- /dev/null +++ b/lib_blackfin/board.c @@ -0,0 +1,282 @@ +/* + * 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" + +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) +{ + DECLARE_GLOBAL_DATA_PTR; + + 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) +{ + DECLARE_GLOBAL_DATA_PTR; + 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) +{ + DECLARE_GLOBAL_DATA_PTR; + 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) +{ + DECLARE_GLOBAL_DATA_PTR; + 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 (;;); +} |