cmc_pu2.h

U-Boot1.1.2是最为常用的嵌入式系统Bootloader

/*
 * Gary Jennejohn <[e-mail]>
 *
 * Configuration settings for the CMC PU2 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 */

/* ARM asynchronous clock */
#define AT91C_MAIN_CLOCK	207360000	/* from 18.432 MHz crystal (18432000 / 4 * 45) */
#define AT91C_MASTER_CLOCK	69120000	/* peripheral clock (AT91C_MASTER_CLOCK / 3) */

#define AT91_SLOW_CLOCK		32768	/* slow clock */

#define CONFIG_AT91RM9200DK	1	/* on an AT91RM9200DK Board	 */
#define CONFIG_CMC_PU2		1	/* on an CMC_PU2 Board	 */
#undef CONFIG_USE_IRQ			/* we don't need IRQ/FIQ stuff */
#define CONFIG_CMDLINE_TAG	1	/* enable passing of ATAGs	*/
#define CONFIG_SETUP_MEMORY_TAGS 1
#define CONFIG_INITRD_TAG	1

/* define this to include the functionality of boot.bin in u-boot */
#define CONFIG_BOOTBINFUNC

/* just to make sure */
#ifndef CONFIG_BOOTBINFUNC
#define CONFIG_BOOTBINFUNC
#endif

/*
 * Size of malloc() pool
 */
#define CFG_MALLOC_LEN	(CFG_ENV_SIZE + 128*1024)
#define CFG_GBL_DATA_SIZE	128	/* size in bytes reserved for initial data */

#define CONFIG_BAUDRATE		9600

#define CFG_AT91C_BRGR_DIVISOR	450	/* hardcode so no __divsi3 : AT91C_MASTER_CLOCK /(baudrate * 16) */

/*
 * Hardware drivers
 */

/* define one of these to choose the DBGU, USART0  or USART1 as console */
#undef CONFIG_DBGU
#define CONFIG_USART0
#undef CONFIG_USART1

#undef	CONFIG_HWFLOW			/* don't include RTS/CTS flow control support	*/

#undef	CONFIG_MODEM_SUPPORT		/* disable modem initialization stuff */

#define CONFIG_HARD_I2C

#ifdef CONFIG_HARD_I2C
#define CFG_I2C_SPEED		0	/* not used */
#define CFG_I2C_SLAVE		0	/* not used */
#define CONFIG_RTC_RS5C372A		/* RICOH I2C RTC */
#define CFG_I2C_RTC_ADDR	0x32
#define CFG_I2C_EEPROM_ADDR	0x50
#define CFG_I2C_EEPROM_ADDR_LEN 1
#define CFG_I2C_EEPROM_ADDR_OVERFLOW
#endif
/* still about 20 kB free with this defined */
#define CFG_LONGHELP

#define CONFIG_BOOTDELAY      3

#ifdef CONFIG_HARD_I2C
#define CONFIG_COMMANDS		\
		       ((CONFIG_CMD_DFL	| \
			CFG_CMD_I2C	| \
			CFG_CMD_DATE	| \
			CFG_CMD_EEPROM	| \
			CFG_CMD_DHCP )	& \
		      ~(CFG_CMD_FPGA | CFG_CMD_MISC) )
#else
#define CONFIG_COMMANDS		\
		       ((CONFIG_CMD_DFL	| \
			CFG_CMD_DHCP )	& \
		      ~(CFG_CMD_FPGA | CFG_CMD_MISC) )
#define CONFIG_TIMESTAMP
#endif
#define CFG_LONGHELP

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

#define AT91_SMART_MEDIA_ALE	(1 << 22)	/* our ALE is AD22 */
#define AT91_SMART_MEDIA_CLE	(1 << 21)	/* our CLE is AD21 */

#define CONFIG_NR_DRAM_BANKS	1
#define PHYS_SDRAM		0x20000000
#define PHYS_SDRAM_SIZE		0x1000000 	/* 16 megs */

#define CFG_MEMTEST_START		PHYS_SDRAM
#define CFG_MEMTEST_END			CFG_MEMTEST_START + PHYS_SDRAM_SIZE - 262144

#define CONFIG_DRIVER_ETHER
#define CONFIG_NET_RETRY_COUNT		20
#define CONFIG_AT91C_USE_RMII

#define CONFIG_HAS_DATAFLASH		1
#define CFG_SPI_WRITE_TOUT		(5*CFG_HZ)
#define CFG_MAX_DATAFLASH_BANKS		2
#define CFG_MAX_DATAFLASH_PAGES		16384
#define CFG_DATAFLASH_LOGIC_ADDR_CS0	0xC0000000	/* Logical adress for CS0 */
#define CFG_DATAFLASH_LOGIC_ADDR_CS3	0xD0000000	/* Logical adress for CS3 */

#define PHYS_FLASH_1			0x10000000
#define PHYS_FLASH_SIZE			0x800000  /* 8 megs main flash */
#define CFG_FLASH_BASE			PHYS_FLASH_1
#define CFG_MONITOR_BASE		CFG_FLASH_BASE
#define CFG_MAX_FLASH_BANKS		1
#define CFG_MAX_FLASH_SECT		256
#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_IS_IN_FLASH		1
#define CFG_ENV_OFFSET			0x20000		/* after u-boot.bin */
#define CFG_ENV_SECT_SIZE		(64 << 10)	/* sectors are 64 kB */
#define CFG_ENV_SIZE			(16 << 10)	/* Use only 16 kB */

#define CFG_LOAD_ADDR		0x21000000  /* default load address */

#define CFG_BAUDRATE_TABLE	{ 115200, 57600, 38400, 19200, 9600 }

#define CFG_PROMPT		"=> "		/* Monitor Command Prompt */
#define CFG_CBSIZE		256		/* Console I/O Buffer Size */
#define CFG_MAXARGS		32		/* max number of command args */
#define CFG_PBSIZE		(CFG_CBSIZE+sizeof(CFG_PROMPT)+16) /* Print Buffer Size */

#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	/* __ASSEMBLY__ */

#define CFG_HZ 1000
#define CFG_HZ_CLOCK AT91C_MASTER_CLOCK/2	/* AT91C_TC0_CMR is implicitly set to */
					/* AT91C_TC_TIMER_DIV1_CLOCK */

#define CONFIG_STACKSIZE	(32*1024)	/* regular stack */

#ifdef CONFIG_USE_IRQ
#error CONFIG_USE_IRQ not supported
#endif

#endif	/* __CONFIG_H */