ebony.h

AT91RM9200的完整启动代码：包括loader, boot及U-boot三部分均已编译通过！欢迎下载使用！

/*
 * (C) Copyright 2002 Scott McNutt <[e-mail]>
 *
 * 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
 */

/************************************************************************
 * board/config_EBONY.h - configuration for IBM 440GP Ref (Ebony)
 ***********************************************************************/

#ifndef __CONFIG_H
#define __CONFIG_H

/*-----------------------------------------------------------------------
 * High Level Configuration Options
 *----------------------------------------------------------------------*/
#define CONFIG_EBONY		1	    /* Board is ebony		*/
#define CONFIG_4xx		1	    /* ... PPC4xx family	*/
#define CONFIG_BOARD_PRE_INIT	1	    /* Call board_pre_init	*/
#undef	CFG_DRAM_TEST			    /* Disable-takes long time! */
#define CONFIG_SYS_CLK_FREQ	33333333    /* external freq to pll	*/

/*-----------------------------------------------------------------------
 * Base addresses -- Note these are effective addresses where the
 * actual resources get mapped (not physical addresses)
 *----------------------------------------------------------------------*/
#define CFG_SDRAM_BASE	    0x00000000	    /* _must_ be 0		*/
#define CFG_FLASH_BASE	    0xff800000	    /* start of FLASH		*/
#define CFG_MONITOR_BASE    0xfff80000	    /* start of monitor		*/
#define CFG_PCI_MEMBASE	    0x80000000	    /* mapped pci memory	*/
#define CFG_PERIPHERAL_BASE 0xe0000000	    /* internal peripherals	*/
#define CFG_ISRAM_BASE	    0xc0000000	    /* internal SRAM		*/
#define CFG_PCI_BASE	    0xd0000000	    /* internal PCI regs	*/

#define CFG_FPGA_BASE	    (CFG_PERIPHERAL_BASE + 0x08300000)
#define CFG_NVRAM_BASE_ADDR (CFG_PERIPHERAL_BASE + 0x08000000)

/*-----------------------------------------------------------------------
 * Initial RAM & stack pointer (placed in internal SRAM)
 *----------------------------------------------------------------------*/
#define CFG_INIT_RAM_ADDR   CFG_ISRAM_BASE  /* Initial RAM address	*/
#define CFG_INIT_RAM_END    0x2000	    /* End of used area in RAM	*/
#define CFG_GBL_DATA_SIZE  128		    /* num bytes initial data	*/

#define CFG_GBL_DATA_OFFSET	(CFG_INIT_RAM_END - CFG_GBL_DATA_SIZE)
#define CFG_INIT_SP_OFFSET	CFG_GBL_DATA_OFFSET

#define CFG_MONITOR_LEN	    (256 * 1024)    /* Reserve 256 kB for Mon	*/
#define CFG_MALLOC_LEN	    (128 * 1024)    /* Reserve 128 kB for malloc*/

/*-----------------------------------------------------------------------
 * Serial Port
 *----------------------------------------------------------------------*/
#undef	CONFIG_SERIAL_SOFTWARE_FIFO
#define CFG_EXT_SERIAL_CLOCK	(1843200 * 6)	/* Ext clk @ 11.059 MHz */
#define CONFIG_BAUDRATE		9600

#define CFG_BAUDRATE_TABLE  \
    {300, 600, 1200, 2400, 4800, 9600, 19200, 38400}

/*-----------------------------------------------------------------------
 * NVRAM/RTC
 *
 * NOTE: Upper 8 bytes of NVRAM is where the RTC registers are located.
 * The DS1743 code assumes this condition (i.e. -- it assumes the base
 * address for the RTC registers is:
 *
 *	CFG_NVRAM_BASE_ADDR + CFG_NVRAM_SIZE
 *
 *----------------------------------------------------------------------*/
#define CFG_NVRAM_SIZE	    (0x2000 - 8)    /* NVRAM size(8k)- RTC regs */
#define CONFIG_RTC_DS174x	1		    /* DS1743 RTC		*/

/*-----------------------------------------------------------------------
 * FLASH related
 *----------------------------------------------------------------------*/
#define CFG_MAX_FLASH_BANKS	3		    /* number of banks	    */
#define CFG_MAX_FLASH_SECT	32		    /* sectors per device   */

#undef	CFG_FLASH_CHECKSUM
#define CFG_FLASH_ERASE_TOUT	120000	/* Timeout for Flash Erase (in ms)	*/
#define CFG_FLASH_WRITE_TOUT	500	/* Timeout for Flash Write (in ms)	*/

/*-----------------------------------------------------------------------
 * DDR SDRAM
 *----------------------------------------------------------------------*/
#define CONFIG_SPD_EEPROM               /* Use SPD EEPROM for setup     */
#define SPD_EEPROM_ADDRESS {0x53,0x52}  /* SPD i2c spd addresses        */

/*-----------------------------------------------------------------------
 * I2C
 *----------------------------------------------------------------------*/
#define CONFIG_HARD_I2C		1	    /* I2C with hardware support	*/
#undef	CONFIG_SOFT_I2C			    /* I2C bit-banged		*/
#define CFG_I2C_SPEED		400000	/* I2C speed and slave address	*/
#define CFG_I2C_SLAVE		0x7F
#define CFG_I2C_NOPROBES    {0x69}  /* Don't probe these addrs */


/*-----------------------------------------------------------------------
 * Environment
 *----------------------------------------------------------------------*/
#define CFG_ENV_IS_IN_NVRAM	1	    /* Environment uses NVRAM	*/
#undef	CFG_ENV_IS_IN_FLASH		    /* ... not in flash		*/
#undef	CFG_ENV_IS_IN_EEPROM		    /* ... not in EEPROM	*/

#define CFG_ENV_SIZE		0x1000	    /* Size of Environment vars */
#define CFG_ENV_ADDR		\
	(CFG_NVRAM_BASE_ADDR+CFG_NVRAM_SIZE-CFG_ENV_SIZE)

#define CONFIG_BOOTARGS		"root=/dev/hda1 "
#define CONFIG_BOOTCOMMAND	"bootm ffc00000"    /* autoboot command */
#define CONFIG_BOOTDELAY	-1		    /* disable autoboot */
#define CONFIG_BAUDRATE		9600

#define CONFIG_LOADS_ECHO	1	/* echo on for serial download	*/
#define CFG_LOADS_BAUD_CHANGE	1	/* allow baudrate change	*/

#define CONFIG_MII		1	/* MII PHY management		*/
#define CONFIG_PHY_ADDR		8	/* PHY address			*/


#define CONFIG_COMMANDS	       (CONFIG_CMD_DFL	| \
				CFG_CMD_PCI	| \
				CFG_CMD_IRQ	| \
				CFG_CMD_I2C	| \
				CFG_CMD_KGDB	| \
				CFG_CMD_DHCP	| \
				CFG_CMD_DATE	| \
				CFG_CMD_BEDBUG	| \
				CFG_CMD_ELF	)

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

#undef CONFIG_WATCHDOG			/* watchdog disabled		*/

/*
 * Miscellaneous configurable options
 */
#define CFG_LONGHELP			/* undef to save memory		*/
#define CFG_PROMPT	"=> "		/* Monitor Command Prompt	*/
#if (CONFIG_COMMANDS & CFG_CMD_KGDB)
#define CFG_CBSIZE	1024		/* Console I/O Buffer Size	*/
#else
#define CFG_CBSIZE	256		/* Console I/O Buffer Size	*/
#endif
#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	0x0400000	/* memtest works on	*/
#define CFG_MEMTEST_END		0x0C00000	/* 4 ... 12 MB in DRAM	*/

#define CFG_LOAD_ADDR		0x100000	/* default load address */
#define CFG_EXTBDINFO		1	/* To use extended board_into (bd_t) */

#define CFG_HZ		1000		/* decrementer freq: 1 ms ticks */


/*-----------------------------------------------------------------------
 * PCI stuff
 *-----------------------------------------------------------------------
 */
/* General PCI */
#define CONFIG_PCI			            /* include pci support	        */
#define CONFIG_PCI_PNP			        /* do pci plug-and-play         */
#define CONFIG_PCI_SCAN_SHOW            /* show pci devices on startup  */
#define CFG_PCI_TARGBASE    0x80000000  /* PCIaddr mapped to CFG_PCI_MEMBASE */

/* Board-specific PCI */
#define CFG_PCI_PRE_INIT                /* enable board pci_pre_init()  */
#define CFG_PCI_TARGET_INIT	            /* let board init pci target    */

#define CFG_PCI_SUBSYS_VENDORID 0x1014  /* IBM */
#define CFG_PCI_SUBSYS_DEVICEID 0xcafe  /* Whatever */

/*
 * For booting Linux, the board info and command line data
 * have to be in the first 8 MB of memory, since this is
 * the maximum mapped by the Linux kernel during initialization.
 */
#define CFG_BOOTMAPSZ		(8 << 20)	/* Initial Memory map for Linux */
/*-----------------------------------------------------------------------
 * Cache Configuration
 */
#define CFG_DCACHE_SIZE		8192	/* For IBM 405 CPUs			*/
#define CFG_CACHELINE_SIZE	32	/* ...			*/
#if (CONFIG_COMMANDS & CFG_CMD_KGDB)
#define CFG_CACHELINE_SHIFT	5	/* log base 2 of the above value	*/
#endif

/*
 * Internal Definitions
 *
 * Boot Flags
 */
#define BOOTFLAG_COLD	0x01		/* Normal Power-On: Boot from FLASH	*/
#define BOOTFLAG_WARM	0x02		/* Software reboot			*/

#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
#endif	/* __CONFIG_H */