/*
 * (C) Copyright 2000-2005
 * Stefan Roese, DENX Software Engineering, sr@denx.de.
 *
 * 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_WALNUT		1	/* ...on a WALNUT board		*/
					/* ...and on a SYCAMORE board	*/

#define CONFIG_BOARD_EARLY_INIT_F 1	/* Call board_early_init_f	*/

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

#define CONFIG_PREBOOT	"echo;" \
	"echo Type \"run flash_nfs\" to mount root filesystem over NFS;" \
	"echo"

#undef	CONFIG_BOOTARGS

#define CONFIG_EXTRA_ENV_SETTINGS					\
	"netdev=eth0\0"							\
	"hostname=walnut\0"						\
	"nfsargs=setenv bootargs root=/dev/nfs rw "			\
		"nfsroot=$(serverip):$(rootpath)\0"			\
	"ramargs=setenv bootargs root=/dev/ram rw\0"			\
	"addip=setenv bootargs $(bootargs) "				\
		"ip=$(ipaddr):$(serverip):$(gatewayip):$(netmask)"	\
		":$(hostname):$(netdev):off panic=1\0"			\
	"addtty=setenv bootargs $(bootargs) console=ttyS0,$(baudrate)\0"\
	"flash_nfs=run nfsargs addip addtty;"				\
		"bootm $(kernel_addr)\0"				\
	"flash_self=run ramargs addip addtty;"				\
		"bootm $(kernel_addr) $(ramdisk_addr)\0"		\
	"net_nfs=tftp 200000 $(bootfile);run nfsargs addip addtty;"	\
		"bootm\0"						\
	"rootpath=/opt/eldk/ppc_4xx\0"					\
	"bootfile=/tftpboot/walnut/uImage\0"				\
	"kernel_addr=fff80000\0"					\
	"ramdisk_addr=fff80000\0"					\
	"load=tftp 100000 /tftpboot/walnut/u-boot.bin\0"		\
	"update=protect off fffc0000 ffffffff;era fffc0000 ffffffff;"	\
		"cp.b 100000 fffc0000 40000;"				\
		"setenv filesize;saveenv\0"				\
	"upd=run load;run update\0"					\
	""
#define CONFIG_BOOTCOMMAND	"run net_nfs"

#if 0
#define CONFIG_BOOTDELAY	-1	/* autoboot disabled		*/
#else
#define CONFIG_BOOTDELAY	5	/* autoboot after 5 seconds	*/
#endif

#define CONFIG_BAUDRATE		115200

#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_ASKENV	| \
				CFG_CMD_DATE	| \
				CFG_CMD_DHCP	| \
				CFG_CMD_DIAG	| \
				CFG_CMD_ELF	| \
				CFG_CMD_I2C	| \
				CFG_CMD_IRQ	| \
				CFG_CMD_MII	| \
				CFG_CMD_NET	| \
				CFG_CMD_NFS	| \
				CFG_CMD_PCI	| \
				CFG_CMD_PING	| \
				CFG_CMD_REGINFO | \
				CFG_CMD_SDRAM	| \
				CFG_CMD_SNTP	)

/* 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	CONFIG_SERIAL_SOFTWARE_FIFO
#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_AUTO_COMPLETE	1	/* add autocompletion support	*/
#define CONFIG_LOOPW		1	/* enable loopw command		*/
#define CONFIG_ZERO_BOOTDELAY_CHECK	/* check for keypress on bootdelay==0 */
#define CONFIG_VERSION_VARIABLE 1	/* include version env variable */

#define CFG_RX_ETH_BUFFER	16	/* use 16 rx buffer on 405 emac */

/*-----------------------------------------------------------------------
 * I2C stuff
 *-----------------------------------------------------------------------
 */
#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 CONFIG_PCI_SCAN_SHOW		/* show pci devices on startup	*/

#define CFG_PCI_SUBSYS_VENDORID 0x10e8	/* AMCC */
#define CFG_PCI_SUBSYS_DEVICEID 0xcafe	/* Whatever */
#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	*/

/*-----------------------------------------------------------------------
 * 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_LEN		(256 * 1024)	/* Reserve 256 kB for Monitor	*/
#define CFG_MALLOC_LEN		(128 * 1024)	/* Reserve 128 kB for malloc()	*/
#define CFG_MONITOR_BASE	(-CFG_MONITOR_LEN)

/*
 * Define here the location of the environment variables (FLASH or NVRAM).
 * Note: DENX encourages to use redundant environment in FLASH. NVRAM is only
 *	 supported for backward compatibility.
 */
#if 1
#define CFG_ENV_IS_IN_FLASH	1	/* use FLASH for environment vars	*/
#else
#define CFG_ENV_IS_IN_NVRAM	1	/* use NVRAM for environment vars	*/
#endif

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

#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)	*/

#define CFG_FLASH_EMPTY_INFO		/* print 'E' for empty sector on flinfo */

#define CFG_FLASH_ADDR0		0x5555
#define CFG_FLASH_ADDR1		0x2aaa
#define CFG_FLASH_WORD_SIZE	unsigned char

#ifdef CFG_ENV_IS_IN_FLASH
#define CFG_ENV_SECT_SIZE	0x10000		/* size of one complete sector	*/
#define CFG_ENV_ADDR		(CFG_MONITOR_BASE-CFG_ENV_SECT_SIZE)
#define CFG_ENV_SIZE		0x4000	/* Total Size of Environment Sector	*/

/* Address and size of Redundant Environment Sector	*/
#define CFG_ENV_ADDR_REDUND	(CFG_ENV_ADDR-CFG_ENV_SECT_SIZE)
#define CFG_ENV_SIZE_REDUND	(CFG_ENV_SIZE)
#endif /* CFG_ENV_IS_IN_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		16384	/* For IBM 405 CPUs, older 405 ppc's	*/
					/* have only 8kB, 16kB is save here	*/
#define CFG_CACHELINE_SIZE	32	/* ...			*/
#if (CONFIG_COMMANDS & CFG_CMD_KGDB)
#define CFG_CACHELINE_SHIFT	5	/* log base 2 of the above value	*/
#endif

/*-----------------------------------------------------------------------
 * External Bus Controller (EBC) Setup
 */

/* Memory Bank 0 (Flash Bank 0) initialization					*/
#define CFG_EBC_PB0AP		0x9B015480
#define CFG_EBC_PB0CR		0xFFF18000  /* BAS=0xFFF,BS=1MB,BU=R/W,BW=8bit	*/

#define CFG_EBC_PB1AP		0x02815480
#define CFG_EBC_PB1CR		0xF0018000  /* BAS=0xF00,BS=1MB,BU=R/W,BW=8bit	*/

#define CFG_EBC_PB2AP		0x04815A80
#define CFG_EBC_PB2CR		0xF0118000  /* BAS=0xF01,BS=1MB,BU=R/W,BW=8bit	*/

#define CFG_EBC_PB3AP		0x01815280
#define CFG_EBC_PB3CR		0xF0218000  /* BAS=0xF02,BS=1MB,BU=R/W,BW=8bit	*/

#define CFG_EBC_PB7AP		0x01815280
#define CFG_EBC_PB7CR		0xF0318000  /* BAS=0xF03,BS=1MB,BU=R/W,BW=8bit	*/

/*-----------------------------------------------------------------------
 * External peripheral base address
 *-----------------------------------------------------------------------
 */
#define CFG_KEY_REG_BASE_ADDR	0xF0100000
#define CFG_IR_REG_BASE_ADDR	0xF0200000
#define CFG_FPGA_REG_BASE_ADDR	0xF0300000

/*-----------------------------------------------------------------------
 * Definitions for initial stack pointer and data area
 */
#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 */