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Diffstat (limited to 'arch/microblaze/lib/board.c')
| -rw-r--r-- | arch/microblaze/lib/board.c | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/arch/microblaze/lib/board.c b/arch/microblaze/lib/board.c new file mode 100644 index 0000000..bb40243 --- /dev/null +++ b/arch/microblaze/lib/board.c @@ -0,0 +1,197 @@ +/* + * (C) Copyright 2007 Michal Simek + * (C) Copyright 2004 Atmark Techno, Inc. + * + * Michal SIMEK <monstr@monstr.eu> + * Yasushi SHOJI <yashi@atmark-techno.com> + * + * 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 <version.h> +#include <watchdog.h> +#include <stdio_dev.h> +#include <serial.h> +#include <net.h> +#include <linux/compiler.h> +#include <asm/processor.h> +#include <asm/microblaze_intc.h> +#include <fdtdec.h> + +DECLARE_GLOBAL_DATA_PTR; + +/* + * 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". + */ +typedef int (init_fnc_t) (void); + +init_fnc_t *init_sequence[] = { + env_init, +#ifdef CONFIG_OF_CONTROL + fdtdec_check_fdt, +#endif + serial_init, + console_init_f, + interrupts_init, +#ifdef CONFIG_XILINX_TB_WATCHDOG + hw_watchdog_init, +#endif + timer_init, + NULL, +}; + +unsigned long monitor_flash_len; + +void board_init_f(ulong not_used) +{ + bd_t *bd; + init_fnc_t **init_fnc_ptr; + gd = (gd_t *)(CONFIG_SYS_SDRAM_BASE + CONFIG_SYS_GBL_DATA_OFFSET); + bd = (bd_t *)(CONFIG_SYS_SDRAM_BASE + CONFIG_SYS_GBL_DATA_OFFSET + - GENERATED_BD_INFO_SIZE); +#if defined(CONFIG_CMD_FLASH) + ulong flash_size = 0; +#endif + asm ("nop"); /* FIXME gd is not initialize - wait */ + memset((void *)gd, 0, GENERATED_GBL_DATA_SIZE); + memset((void *)bd, 0, GENERATED_BD_INFO_SIZE); + gd->bd = bd; + gd->baudrate = CONFIG_BAUDRATE; + bd->bi_baudrate = CONFIG_BAUDRATE; + bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; + bd->bi_memsize = CONFIG_SYS_SDRAM_SIZE; + gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */ + + monitor_flash_len = __end - __text_start; + +#ifdef CONFIG_OF_EMBED + /* Get a pointer to the FDT */ + gd->fdt_blob = _binary_dt_dtb_start; +#elif defined CONFIG_OF_SEPARATE + /* FDT is at end of image */ + gd->fdt_blob = (void *)__end; +#endif + /* Allow the early environment to override the fdt address */ + gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16, + (uintptr_t)gd->fdt_blob); + + /* + * The Malloc area is immediately below the monitor copy in DRAM + * aka CONFIG_SYS_MONITOR_BASE - Note there is no need for reloc_off + * as our monitory code is run from SDRAM + */ + mem_malloc_init(CONFIG_SYS_MALLOC_BASE, CONFIG_SYS_MALLOC_LEN); + + serial_initialize(); + + for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) { + WATCHDOG_RESET(); + if ((*init_fnc_ptr) () != 0) + hang(); + } + +#ifdef CONFIG_OF_CONTROL + /* For now, put this check after the console is ready */ + if (fdtdec_prepare_fdt()) + panic("** No FDT - please see doc/README.fdt-control"); + else + printf("DTB: 0x%x\n", (u32)gd->fdt_blob); +#endif + + puts("SDRAM :\n"); + printf("\t\tIcache:%s\n", icache_status() ? "ON" : "OFF"); + printf("\t\tDcache:%s\n", dcache_status() ? "ON" : "OFF"); + printf("\tU-Boot Start:0x%08x\n", CONFIG_SYS_TEXT_BASE); + +#if defined(CONFIG_CMD_FLASH) + puts("Flash: "); + bd->bi_flashstart = CONFIG_SYS_FLASH_BASE; + flash_size = flash_init(); + if (bd->bi_flashstart && flash_size > 0) { +# ifdef CONFIG_SYS_FLASH_CHECKSUM + print_size(flash_size, ""); + /* + * 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 u8 *)bd->bi_flashstart, + flash_size) + ); + } + putc('\n'); +# else /* !CONFIG_SYS_FLASH_CHECKSUM */ + print_size(flash_size, "\n"); +# endif /* CONFIG_SYS_FLASH_CHECKSUM */ + bd->bi_flashsize = flash_size; + bd->bi_flashoffset = bd->bi_flashstart + flash_size; + } else { + puts("Flash init FAILED"); + bd->bi_flashstart = 0; + bd->bi_flashsize = 0; + bd->bi_flashoffset = 0; + } +#endif + + /* relocate environment function pointers etc. */ + env_relocate(); + + /* Initialize stdio devices */ + stdio_init(); + + /* Initialize the jump table for applications */ + jumptable_init(); + + /* Initialize the console (after the relocation and devices init) */ + console_init_r(); + + board_init(); + + /* Initialize from environment */ + load_addr = getenv_ulong("loadaddr", 16, load_addr); + +#if defined(CONFIG_CMD_NET) + printf("Net: "); + eth_initialize(gd->bd); + + uchar enetaddr[6]; + eth_getenv_enetaddr("ethaddr", enetaddr); + printf("MAC: %pM\n", enetaddr); +#endif + + /* main_loop */ + for (;;) { + WATCHDOG_RESET(); + main_loop(); + } +} |
