walnut405.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 2000, 2001
 * Wolfgang Denk, DENX Software Engineering, [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.h - configuration options, board specific
 */

#ifndef __CONFIG_H
#define __CONFIG_H

/*
 * High Level Configuration Options
 * (easy to change)
 */

#define CONFIG_405GP		1	/* This is a PPC405 CPU		*/
#define CONFIG_4xx		1	/* ...member of PPC4xx family   */
#define CONFIG_WALNUT405	1	/* ...on a WALNUT405 board	*/

#define CONFIG_BOARD_PRE_INIT	1	/* Call board_pre_init	*/

#define CONFIG_SYS_CLK_FREQ     33333333 /* external frequency to pll   */

/*#define CFG_ENV_IS_IN_FLASH     1*/	/* use FLASH for environment vars	*/
#define CFG_ENV_IS_IN_NVRAM	1	/* use NVRAM for environment vars	*/

#ifdef CFG_ENV_IS_IN_NVRAM
#undef CFG_ENV_IS_IN_FLASH
#else
#ifdef CFG_ENV_IS_IN_FLASH
#undef CFG_ENV_IS_IN_NVRAM
#endif
#endif

#define CONFIG_BAUDRATE		9600
#define CONFIG_BOOTDELAY	3	/* autoboot after 3 seconds	*/

#if 1
#define CONFIG_BOOTCOMMAND	"bootm ffc00000" /* autoboot command	*/
#else
#define CONFIG_BOOTCOMMAND	"bootp" /* autoboot command		*/
#endif

/* Size (bytes) of interrupt driven serial port buffer.
 * Set to 0 to use polling instead of interrupts.
 * Setting to 0 will also disable RTS/CTS handshaking.
 */
#if 0
#define CONFIG_SERIAL_SOFTWARE_FIFO 4000
#else
#undef	CONFIG_SERIAL_SOFTWARE_FIFO
#endif

#if 0
#define CONFIG_BOOTARGS		"root=/dev/nfs "                        \
    "ip=192.168.2.176:192.168.2.190:192.168.2.79:255.255.255.0 "        \
    "nfsroot=192.168.2.190:/home/stefan/cpci405/target_ftest4"
#else
#define CONFIG_BOOTARGS		"root=/dev/hda1 "			\
   "ip=192.168.2.176:192.168.2.190:192.168.2.79:255.255.255.0"

#endif

#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		1	/* PHY address			*/

#define CONFIG_RTC_DS174x	1	/* use DS1743 RTC in Walnut	*/

#define CONFIG_COMMANDS	       (CONFIG_CMD_DFL	| \
				CFG_CMD_PCI	| \
				CFG_CMD_IRQ	| \
				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		*/

#define CONFIG_SPD_EEPROM      1       /* use SPD EEPROM for setup    */

/*
 * 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	*/

/*
 * If CFG_EXT_SERIAL_CLOCK, then the UART divisor is 1.
 * If CFG_405_UART_ERRATA_59, then UART divisor is 31.
 * Otherwise, UART divisor is determined by CPU Clock and CFG_BASE_BAUD value.
 * The Linux BASE_BAUD define should match this configuration.
 *    baseBaud = cpuClock/(uartDivisor*16)
 * If CFG_405_UART_ERRATA_59 and 200MHz CPU clock,
 * set Linux BASE_BAUD to 403200.
 */
#undef  CFG_EXT_SERIAL_CLOCK           /* external serial clock */
#undef  CFG_405_UART_ERRATA_59         /* 405GP/CR Rev. D silicon */
#define CFG_BASE_BAUD       691200

/* The following table includes the supported baudrates */
#define CFG_BAUDRATE_TABLE  \
    {300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400}

#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	*/

#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


/*-----------------------------------------------------------------------
 * PCI stuff
 *-----------------------------------------------------------------------
 */
#define PCI_HOST_ADAPTER 0              /* configure ar pci adapter     */
#define PCI_HOST_FORCE  1               /* configure as pci host        */
#define PCI_HOST_AUTO   2               /* detected via arbiter enable  */

#define CONFIG_PCI			/* include pci support	        */
#define CONFIG_PCI_HOST	PCI_HOST_FORCE  /* select pci host function     */
#define CONFIG_PCI_PNP			/* do pci plug-and-play         */
                                        /* resource configuration       */

#define CFG_PCI_SUBSYS_VENDORID 0x0000  /* PCI Vendor ID: to-do!!!      */
#define CFG_PCI_SUBSYS_DEVICEID 0x0000  /* PCI Device ID: to-do!!!      */
#define CFG_PCI_PTM1LA  0x00000000      /* point to sdram               */
#define CFG_PCI_PTM1MS  0x80000001      /* 2GB, enable hard-wired to 1  */
#define CFG_PCI_PTM1PCI 0x00000000      /* Host: use this pci address   */
#define CFG_PCI_PTM2LA  0x00000000      /* disabled                     */
#define CFG_PCI_PTM2MS  0x00000000      /* disabled                     */
#define CFG_PCI_PTM2PCI 0x04000000      /* Host: use this pci address   */

/*-----------------------------------------------------------------------
 * External peripheral base address
 *-----------------------------------------------------------------------
 */
#undef  CONFIG_IDE_LED                  /* no led for ide supported     */
#undef  CONFIG_IDE_RESET                /* no reset for ide supported   */

#define	CFG_KEY_REG_BASE_ADDR	0xF0100000
#define	CFG_IR_REG_BASE_ADDR	0xF0200000
#define	CFG_FPGA_REG_BASE_ADDR	0xF0300000

/*-----------------------------------------------------------------------
 * Start addresses for the final memory configuration
 * (Set up by the startup code)
 * Please note that CFG_SDRAM_BASE _must_ start at 0
 */
#define CFG_SDRAM_BASE		0x00000000
#define CFG_FLASH_BASE		0xFFF80000
#define CFG_MONITOR_BASE	CFG_FLASH_BASE
#define CFG_MONITOR_LEN		(256 * 1024)	/* Reserve 256 kB for Monitor	*/
#define CFG_MALLOC_LEN		(128 * 1024)	/* Reserve 128 kB for malloc()	*/

/*
 * 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 */
/*-----------------------------------------------------------------------
 * FLASH organization
 */
#define CFG_MAX_FLASH_BANKS	1	/* max number of memory banks		*/
#define CFG_MAX_FLASH_SECT	256	/* max number of sectors on one chip	*/

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

/* BEG ENVIRONNEMENT FLASH */
#ifdef CFG_ENV_IS_IN_FLASH
#define CFG_ENV_OFFSET		0x00050000 /* Offset of Environment Sector  */
#define	CFG_ENV_SIZE		0x10000	/* Total Size of Environment Sector	*/
#define CFG_ENV_SECT_SIZE	0x10000	/* see README - env sector total size	*/
#endif
/* END ENVIRONNEMENT FLASH */
/*-----------------------------------------------------------------------
 * NVRAM organization
 */
#define CFG_NVRAM_BASE_ADDR	0xf0000000	/* NVRAM base address	*/
#define CFG_NVRAM_SIZE		0x1ff8		/* NVRAM size	*/

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

/*
 * Init Memory Controller:
 *
 * BR0/1 and OR0/1 (FLASH)
 */

#define FLASH_BASE0_PRELIM	CFG_FLASH_BASE	/* FLASH bank #0	*/
#define FLASH_BASE1_PRELIM	0		/* FLASH bank #1	*/


/* Configuration Port location */
#define CONFIG_PORT_ADDR	0xF0000500

/*-----------------------------------------------------------------------
 * Definitions for initial stack pointer and data area (in DPRAM)
 */
#define CFG_INIT_DCACHE_CS      4       /* use cs # 4 for data cache memory    */

#define CFG_INIT_RAM_ADDR       0x40000000  /* inside of SDRAM                     */
#define CFG_INIT_RAM_END        0x2000  /* End of used area in RAM             */
#define CFG_GBL_DATA_SIZE      128  /* size in bytes reserved for initial data */
#define CFG_GBL_DATA_OFFSET    (CFG_INIT_RAM_END - CFG_GBL_DATA_SIZE)
#define CFG_INIT_SP_OFFSET      CFG_GBL_DATA_OFFSET

/*-----------------------------------------------------------------------
 * Definitions for Serial Presence Detect EEPROM address
 * (to get SDRAM settings)
 */
#define SPD_EEPROM_ADDRESS      0x50

/*
 * 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 */