config_impa7.h

ARM的bootloader代码.rar

/*
 * (C) Copyright 2000
 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
 * Marius Groeger <[e-mail]>
 *
 * Configuation settings for the implementa impA7 board.
 *
 * 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
 */

#ifndef __CONFIG_H
#define __CONFIG_H

/*
 * If we are developing, we might want to start armboot from ram
 * so we MUST NOT initialize critical regs like mem-timing ...
 */
#define CONFIG_INIT_CRITICAL            /* undef for developing */

/*
 * High Level Configuration Options
 * (easy to change)
 */
#define CONFIG_ARM7		1	/* This is a ARM7 CPU	*/
#define CONFIG_IMPA7		1	/* on an impA7 Board      */
#define CONFIG_ARM_THUMB	1	/* this is an ARM720TDMI */
#define CONFIG_ARM7_REVD	1 	/* enable ARM720 REV.D Workarounds */

#undef CONFIG_USE_IRQ			/* don't need them anymore */

/*
 * Size of malloc() pool
 */
#define CONFIG_MALLOC_SIZE	(CFG_ENV_SIZE + 128*1024)

/*
 * Hardware drivers
 */
#define CONFIG_DRIVER_CS8900	1	/* we have a CS8900 on-board */
#define CS8900_BASE		0x20000000
#define CS8900_BUS32		1

/*
 * select serial console configuration
 */
#define CONFIG_SERIAL1		1	/* we use Serial line 1 */

/* allow to overwrite serial and ethaddr */
#define CONFIG_ENV_OVERWRITE

#define CONFIG_BAUDRATE		9600

#define CONFIG_BOOTP_MASK       (CONFIG_BOOTP_DEFAULT|CONFIG_BOOTP_BOOTFILESIZE)

#define CONFIG_COMMANDS		(CONFIG_CMD_DFL | CFG_CMD_JFFS2)

/* this must be included AFTER the definition of CONFIG_COMMANDS (if any) */
#include <cmd_confdefs.h>

#define CONFIG_BOOTDELAY	3
#define CONFIG_BOOTARGS    	"devfs=mount root=ramfs console=ttyS0,9600"
//#define CONFIG_ETHADDR	08:00:3e:26:0a:5a
//#define CONFIG_NETMASK        255.255.0.0
//#define CONFIG_IPADDR		172.22.2.128
//#define CONFIG_SERVERIP	172.22.2.126
//#define CONFIG_BOOTFILE	"impa7"
#define CONFIG_BOOTCOMMAND	"bootp;bootm"

#if (CONFIG_COMMANDS & CFG_CMD_KGDB)
#define CONFIG_KGDB_BAUDRATE	230400		/* speed to run kgdb serial port */
#define CONFIG_KGDB_SER_INDEX	2		/* which serial port to use */
#endif

/*
 * Miscellaneous configurable options
 */
#define	CFG_LONGHELP				/* undef to save memory		*/
#define	CFG_PROMPT		"impA7 # "		/* Monitor Command Prompt	*/
#define	CFG_CBSIZE		256		/* Console I/O Buffer Size	*/
#define	CFG_PBSIZE (CFG_CBSIZE+sizeof(CFG_PROMPT)+16) /* Print Buffer Size */
#define	CFG_MAXARGS		16		/* max number of command args	*/
#define CFG_BARGSIZE		CFG_CBSIZE	/* Boot Argument Buffer Size	*/

#define CFG_MEMTEST_START	0xc0400000	/* memtest works on	*/
#define CFG_MEMTEST_END		0xc0800000	/* 4 ... 8 MB in DRAM	*/

#undef  CFG_CLKS_IN_HZ		/* everything, incl board info, in Hz */

#define	CFG_LOAD_ADDR		0xc1000000	/* default load address	*/

#define	CFG_HZ			2000		/* decrementer freq: 2 kHz */

						/* valid baudrates */
#define CFG_BAUDRATE_TABLE	{ 9600, 19200, 38400, 57600, 115200 }

#ifndef __ASSEMBLY__
/*-----------------------------------------------------------------------
 * Board specific extension for bd_info
 *
 * This structure is embedded in the global bd_info (bd_t) structure
 * and can be used by the board specific code (eg board/...)
 */

struct bd_info_ext
{
    /* helper variable for board environment handling
     *
     * env_crc_valid == 0    =>   uninitialised
     * env_crc_valid  > 0    =>   environment crc in flash is valid
     * env_crc_valid  < 0    =>   environment crc in flash is invalid
     */
     int	env_crc_valid;
};
#endif

/*-----------------------------------------------------------------------
 * Stack sizes
 *
 * The stack sizes are set up in start.S using the settings below
 */
#define CONFIG_STACKSIZE	(128*1024)	/* regular stack */
#ifdef CONFIG_USE_IRQ
#define CONFIG_STACKSIZE_IRQ	(4*1024)	/* IRQ stack */
#define CONFIG_STACKSIZE_FIQ	(4*1024)	/* FIQ stack */
#endif

/*-----------------------------------------------------------------------
 * Physical Memory Map
 */
#define CONFIG_NR_DRAM_BANKS	2	   /* we have 2 banks of DRAM */
#define PHYS_SDRAM_1		0xc0000000 /* SDRAM Bank #1 */
#define PHYS_SDRAM_1_SIZE	0x00800000 /* 8 MB */
#define PHYS_SDRAM_2		0xc1000000 /* SDRAM Bank #2 */
#define PHYS_SDRAM_2_SIZE	0x00800000 /* 8 MB */

#define PHYS_FLASH_1		0x00000000 /* Flash Bank #1 */
#define PHYS_FLASH_2		0x10000000 /* Flash Bank #2 */
#define PHYS_FLASH_SIZE		0x00800000 /* 16 MB */

#define CFG_FLASH_BASE		PHYS_FLASH_1

/*-----------------------------------------------------------------------
 * FLASH and environment organization
 */
#define CFG_MAX_FLASH_BANKS	2	/* max number of memory banks		*/
#define CFG_MAX_FLASH_SECT	71	/* max number of sectors on one chip	*/

/* timeout values are in ticks */
#define CFG_FLASH_ERASE_TOUT	(2*CFG_HZ) /* Timeout for Flash Erase */
#define CFG_FLASH_WRITE_TOUT	(2*CFG_HZ) /* Timeout for Flash Write */

#define CFG_ENV_ADDR		(PHYS_FLASH_1 + 0x1C000)	/* Addr of Environment Sector	*/
#define CFG_ENV_SIZE		0x4000	/* Total Size of Environment Sector	*/

/* Flash banks JFFS2 should use */
#define CFG_JFFS2_FIRST_BANK    0
#define CFG_JFFS2_FIRST_SECTOR	8
#define CFG_JFFS2_NUM_BANKS     2

#endif	/* __CONFIG_H */