/* * shannon.h: SHANNON specific defines * * Copyright (C) 2001  Erik Mouw (J.A.K.Mouw@its.tudelft.nl) * * $Id: shannon.h,v 1.1.1.1 2005/09/24 12:57:38 dingbaohua Exp $ * * 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 * */#ident "$Id: shannon.h,v 1.1.1.1 2005/09/24 12:57:38 dingbaohua Exp $"#ifndef BLOB_ARCH_SHANNON_H#define BLOB_ARCH_SHANNON_H/* boot CPU speed */#define CPU_SPEED		CPU_CORE_SPEED_191mhz/* serial port */#define USE_SERIAL3#define TERMINAL_SPEED baud_115200/* GPIO for the LED */#define LED_GPIO		(0x00040000) /* GPIO 18, codec (ucb1300) reset *//* to connect this up, you'll need an LED and a resistor (100ohm - 1k will probably do) * *             o o o  =\ =o o o o            o o    ___________ \ *           33| |  \   \ |//|               | |  1////-33 \ \ \ |/--\o *           --+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-- |||| --+-+-+-+-+-+-+ *           | : : : : : : : : : : : : : : : : : | |||| | : : : : : : : *           --+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-- |||| --+-+-+-+-+-+-+ * <-- front 34o o o o o|o o   J601  o|||||||| o  2|||| 34o J600o|o|o|o       back --> *             |       /   /\       /\o|o|o|o|     ||||   |      | | | *                         ||       || *                         ||       || *                       GPIO18     GND * * This is supposed to be ascii art of the daughter board rotated 90 degrees clockwise. * An LED and resistor should be connected between the two vias indicated by GPIO18 and * GND. These vias are on either side of the J601 silk label. The circuit should be connected * as shown below (other interpretations sholud work as well). * * *                        |\ | *    GPIO18 o---/\/\/\---| >|---------o GND  *                        |/ | * *                 R1      D1 * * * A little excessive description maybe, but I don't want anyone blowing up their tux :) * *//* Shannon memory layout is a bit precious because we want to be able * to load blob at the correct location for both 8 and 32MB * SODIMMs. We assume that the following amount of memory is at least * available in both situations: * * 1MB @ 0xc0000000 * 1MB @ 0xc8000000 * 4MB @ 0xd0000000 * 4MB @ 0xd8000000 * *//* the base address were blob-rest is loaded by the first stage loader */#define BLOB_ABS_BASE_ADDR	(0xc8000400)/* where do various parts live in RAM */#define BLOB_RAM_BASE		(0xc0120000)#define KERNEL_RAM_BASE		(0xc0008000)#define PARAM_RAM_BASE		(0xc8040000)#define RAMDISK_RAM_BASE	(0xd0000000)/* and where do they live in flash */#define BLOB_FLASH_BASE		(0x00000000)#define BLOB_FLASH_LEN		(64 * 1024)#define PARAM_FLASH_BASE	(BLOB_FLASH_BASE + BLOB_FLASH_LEN)#define PARAM_FLASH_LEN		(64 * 1024)#define KERNEL_FLASH_BASE	(PARAM_FLASH_BASE + PARAM_FLASH_LEN)#define KERNEL_FLASH_LEN	((1024 - 128) * 1024) /* RAM_LEN if load_kernel */#define LOAD_RAMDISK		0 /* leave ramdisk in flash */#if defined(CONFIG_CRAMFS_SUPPORT) || defined(CONFIG_JFFS2_SUPPORT)#define RAMDISK_FLASH_BASE	KERNEL_FLASH_BASE#define RAMDISK_FLASH_LEN	(4 * 1024 * 1024 - BLOB_FLASH_LEN - PARAM_FLASH_LEN)#else#define RAMDISK_FLASH_BASE	(KERNEL_FLASH_BASE + KERNEL_FLASH_LEN)#define RAMDISK_FLASH_LEN	(4 * 1024 * 1024 - BLOB_FLASH_LEN - PARAM_FLASH_LEN - KERNEL_FLASH_LEN)#endif#define PARAM_START PARAM_FLASH_BASE#define PARAM_LEN PARAM_FLASH_LEN/* the position of the kernel boot parameters */#define BOOT_PARAMS		(0xc0000100)/* the size (in kbytes) to which the compressed ramdisk expands */#define RAMDISK_SIZE		(8 * 1024)#endif