发布时间 : 星期一 文章移植Linux内核到norflash更新完毕开始阅读
与前面不同的是，它打印了芯片的信息，如厂商ID、芯片ID等等。 这是我想不通的地方，也是我采用新内核的原因。
不过，在这片nor flash上使用jffs2文件系统却不成功，出现了大量的警告信息，提示说制作根文件系统时的erase block有问题。 s3c2440-flash.c源代码： /*
* $Id: s3c2410.c,v 1.00 2006/12/05 10:18:14 gleixner Exp $ *
* Handle mapping of the NOR flash on Cogent S3C2410 boards *
* Copyright 2002 SYSGO Real-Time Solutions GmbH * *
This program is free software; you can redistribute it and/or modify *
it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation. */ /*
* Late Lee
*
This file is modified and the file name has changed to ‘s3c2440-flash.c’. *
The SMDK2440 board has only one flash bank which is a 64Mbit(4Mx16) SST SST39VF6401B; * 128 x 64 KiB blocks. *
* This code is GPLed. */
#include
#define WINDOW_ADDR 0x01000000 /* physical properties of flash */
#define WINDOW_SIZE 0x800000 /* 8MB */ #define BUSWIDTH 2 /* 2*8 = 16 */
#define FLASH_BLOCKSIZE_MAIN 0x10000 /* 64KB(0x10000) 128 blocks */
#define FLASH_NUMBLOCKS_MAIN 128
/* can be “cfi_probe”, “jedec_probe”, “map_rom”, NULL }; */ #define PROBETYPES { “cfi_probe”, “jedec_probe”, “map_rom”, NULL }
#define MSG_PREFIX “S3C2440-NOR:” /* prefix for our printk()’s */
#define MTDID “s3c2440-nor” /* for mtdparts= partitioning */
#define DEBUG_FLASH #ifdef DEBUG_FLASH
#define flash_debug(fmt, args…) printk(KERN_NOTICE “## LL debug “ MSG_PREFIX fmt, ##args) #else
#define flash_debug(fmt, args…) #endif
static struct mtd_info *mymtd;
struct map_info s3c2440nor_map = {
.name = “NOR Flash(SST39VF6401B) on S3C2440″, .size = WINDOW_SIZE, .bankwidth = BUSWIDTH, .phys = WINDOW_ADDR, };
#ifdef CONFIG_MTD_PARTITIONS /*
* MTD partitioning stuff */
static struct mtd_partition static_partitions[] = { /*0: U-Boot: 0-0x30000 0x30000=192KB*/ {
.name = “U-Boot”, .size = 0x030000, .offset = 0x0, },
/*1: Kernel: 0x30000-0x240000 0x210000=2112KB=2.0625MB*/ {
.name = “Kernel”, .size = 0x210000, .offset = 0x30000,