davinci_sffsdr.h

uboot详细解读可用启动引导LINUX2.6内核

/*
 * Copyright (C) 2007 Sergey Kubushyn <[e-mail]>
 *
 * Copyright (C) 2008 Lyrtech <www.lyrtech.com>
 * Copyright (C) 2008 Philip Balister, OpenSDR <[e-mail]>
 *
 * 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
#include <asm/sizes.h>

/* Board */
#define SFFSDR
#define CFG_NAND_LARGEPAGE
#define CFG_USE_NAND
#define CFG_USE_DSPLINK		/* This is to prevent U-Boot from
				 * powering ON the DSP. */
/* SoC Configuration */
#define CONFIG_ARM926EJS			/* arm926ejs CPU core */
#define CONFIG_SYS_CLK_FREQ	297000000	/* Arm Clock frequency */
#define CFG_TIMERBASE		0x01c21400	/* use timer 0 */
#define CFG_HZ_CLOCK		27000000	/* Timer Input clock freq */
#define CFG_HZ			1000
/* EEPROM definitions for Atmel 24LC64 EEPROM chip */
#define CFG_I2C_EEPROM_ADDR_LEN		2
#define CFG_I2C_EEPROM_ADDR		0x50
#define CFG_EEPROM_PAGE_WRITE_BITS	5
#define CFG_EEPROM_PAGE_WRITE_DELAY_MS	20
/* Memory Info */
#define CFG_MALLOC_LEN		(0x10000 + 256*1024)	/* malloc() len */
#define CFG_GBL_DATA_SIZE	128		/* reserved for initial data */
#define CFG_MEMTEST_START	0x80000000	/* memtest start address */
#define CFG_MEMTEST_END		0x81000000	/* 16MB RAM test */
#define CONFIG_NR_DRAM_BANKS	1		/* we have 1 bank of DRAM */
#define CONFIG_STACKSIZE	(256*1024)	/* regular stack */
#define PHYS_SDRAM_1		0x80000000	/* DDR Start */
#define PHYS_SDRAM_1_SIZE	0x08000000	/* DDR size 128MB */
#define DDR_4BANKS				/* 4-bank DDR2 (128MB) */
/* Serial Driver info */
#define CFG_NS16550
#define CFG_NS16550_SERIAL
#define CFG_NS16550_REG_SIZE	4		/* NS16550 register size */
#define CFG_NS16550_COM1	0x01c20000	/* Base address of UART0 */
#define CFG_NS16550_CLK		27000000	/* Input clock to NS16550 */
#define CONFIG_CONS_INDEX	1		/* use UART0 for console */
#define CONFIG_BAUDRATE		115200		/* Default baud rate */
#define CFG_BAUDRATE_TABLE	{ 9600, 19200, 38400, 57600, 115200 }
/* I2C Configuration */
#define CONFIG_HARD_I2C
#define CONFIG_DRIVER_DAVINCI_I2C
#define CFG_I2C_SPEED		80000	/* 100Kbps won't work, silicon bug */
#define CFG_I2C_SLAVE		10	/* Bogus, master-only in U-Boot */
/* Network & Ethernet Configuration */
#define CONFIG_DRIVER_TI_EMAC
#define CONFIG_MII
#define CONFIG_BOOTP_DEFAULT
#define CONFIG_BOOTP_DNS
#define CONFIG_BOOTP_DNS2
#define CONFIG_BOOTP_SEND_HOSTNAME
#define CONFIG_NET_RETRY_COUNT	10
#define CONFIG_OVERWRITE_ETHADDR_ONCE
/* Flash & Environment */
#undef CFG_ENV_IS_IN_FLASH
#define CFG_NO_FLASH
#define CFG_ENV_IS_IN_NAND		/* U-Boot env in NAND Flash  */
#define CFG_ENV_SECT_SIZE	2048	/* Env sector Size */
#define CFG_ENV_SIZE		SZ_128K
#define CONFIG_SKIP_LOWLEVEL_INIT	/* U-Boot is loaded by a bootloader */
#define CONFIG_SKIP_RELOCATE_UBOOT	/* to a proper address, init done */
#define CFG_NAND_BASE		0x02000000
#define CFG_NAND_HW_ECC
#define CFG_MAX_NAND_DEVICE	1	/* Max number of NAND devices */
#define NAND_MAX_CHIPS		1
#define CFG_ENV_OFFSET		0x0	/* Block 0--not used by bootcode */
/* I2C switch definitions for PCA9543 chip */
#define CFG_I2C_PCA9543_ADDR		0x70
#define CFG_I2C_PCA9543_ADDR_LEN	0	/* Single register. */
#define CFG_I2C_PCA9543_ENABLE_CH0	0x01	/* Enable channel 0. */
/* U-Boot general configuration */
#undef CONFIG_USE_IRQ				/* No IRQ/FIQ in U-Boot */
#define CONFIG_MISC_INIT_R
#define CONFIG_BOOTDELAY	5		/* Autoboot after 5 seconds. */
#define CONFIG_BOOTFILE		"uImage"	/* Boot file name */
#define CFG_PROMPT		"U-Boot > "	/* Monitor Command Prompt */
#define CFG_CBSIZE		1024		/* 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_LOAD_ADDR		0x80700000	/* Default Linux kernel
						 * load address. */
#define CONFIG_VERSION_VARIABLE
#define CONFIG_AUTO_COMPLETE		/* Won't work with hush so far,
					 * may be later */
#define CFG_HUSH_PARSER
#define CFG_PROMPT_HUSH_PS2	"> "
#define CONFIG_CMDLINE_EDITING
#define CFG_LONGHELP
#define CONFIG_CRC32_VERIFY
#define CONFIG_MX_CYCLIC
/* Linux Information */
#define LINUX_BOOT_PARAM_ADDR	0x80000100
#define CONFIG_CMDLINE_TAG
#define CONFIG_SETUP_MEMORY_TAGS
#define CONFIG_BOOTARGS			\
	"mem=56M "			\
	"console=ttyS0,115200n8 "	\
	"root=/dev/nfs rw noinitrd ip=dhcp "	\
	"nfsroot=${serverip}:/nfsroot/sffsdr "	\
	"eth0=${ethaddr}"
#define CONFIG_BOOTCOMMAND	\
	"nand read 87A00000 100000 300000;"	\
	"bootelf 87A00000"
/* U-Boot commands */
#include <config_cmd_default.h>
#define CONFIG_CMD_ASKENV
#define CONFIG_CMD_DHCP
#define CONFIG_CMD_DIAG
#define CONFIG_CMD_I2C
#define CONFIG_CMD_MII
#define CONFIG_CMD_PING
#define CONFIG_CMD_SAVES
#define CONFIG_CMD_NAND
#define CONFIG_CMD_EEPROM
#define CONFIG_CMD_ELF	/* Needed to load Integrity kernel. */
#undef CONFIG_CMD_BDI
#undef CONFIG_CMD_FPGA
#undef CONFIG_CMD_SETGETDCR
#undef CONFIG_CMD_FLASH
#undef CONFIG_CMD_IMLS
/* KGDB support (if any) */
#ifdef CONFIG_CMD_KGDB
#define CONFIG_KGDB_BAUDRATE	115200	/* speed to run kgdb serial port */
#define CONFIG_KGDB_SER_INDEX	1	/* which serial port to use */
#endif
#endif /* __CONFIG_H */