uboot中用struct mtd_inifo来描述一个mtd设备,每个mtd设备又可以进行分区,其中: struct mtd_info { //... /* MTD devices do not have any parent. MTD partitions do. */ struct mtd_info *parent; /* * Offset of the partition relatively to the parent offset. * Is 0 for real MTD devices (i...
编写s3c2440_select_chip 函数,代码如下(这里可以参考别的单板的例程): staticvoids3c2440_select_chip(structmtd_info *mtd,intchipnr) {structs3c2440_nand *nand_reg =s3c2440_get_base_nand();if(chipnr==-1)//CE Disable{ nand_reg->nfcont|=(0x01<<1);//bit1置1}else//CE Enable{ nand_reg...
fdt - flattened device tree utility commands flinfo - print FLASH memory information fstype - Look up a filesystem type go - start application at address 'addr' help - print command description/usage iminfo - print header information for application image load - load binary file from a filesy...
struct mtd_info *mtd = &nand_info[i]; //mtd_info属于软件的一部分,实现用户层读写等操作 struct nand_chip *nand = &nand_chip[i]; //属于底层,保存对nand的硬件相关操作,它是mtd_info结构体的priv私有成员 ulong base_addr = base_address[i]; //获取nand寄存器基地址,等于0x4E000000 int maxchip...
Reserving 32 Bytes for Board Info at: 81f7ffe0 Reserving 124 Bytes for Global Data at: 81f7ff64 Reserving 128k for boot params() at: 81f5ff64 Stack Pointer at: 81f5ff48 Now running in RAM - U-Boot at: 83f90000 MMC: msc: 0 ...
staticvoidnand_init_chip(int i){struct mtd_info*mtd=&nand_info[i];//mtd_info属于软件的一部分,实现用户层读写等操作struct nand_chip*nand=&nand_chip[i];//属于底层,保存对nand的硬件相关操作,它是mtd_info结构体的priv私有成员ulong base_addr=base_address[i];//获取nand寄存器基地址,等于0x4E0000...
123 static int s3c2440_nand_devready(struct mtd_info *mtd)124 {125 S3C2440_NAND * const s3c2440nand = S3C2440_GetBase_NAND();126127 return (s3c2440nand->NFSTAT & S3C2440_NFSTAT_READY);128 }129130 /*131 * Nand flash硬件初始化:...
一、nandflash分区信息OpenJTAG>mtdpartdevice nand0 <nandflash0>, # parts = 4#:name size offset...
uboot中NANDflash的MTD驱动移植 u-boot中NAND flash的MTD驱动移植 u-boot中移植了linux中的MTD驱动源码来支持NAND flash擦除、烧写及读的驱动。MTD(memory technology device内存技术设备)是用于访问flash设备的Linux的子系统。MTD的主要目的是为了使新的存储设备的驱动更加简单并有通用接口函数可用。MTD驱动可支持CFI...
1>mtd目录,着重对nandflash的mtd进行介绍。 1.nand_init()函数,uboot对nand flash的初始化是由lib_arm/board.c调用nand_init()函数开始。uboot对nand的处理和linux基本一样,只是简化了一些而已。这里涉及到两个全局变量:nand_info_t(实际上是mtd_Info)类型的nand_info[]和nand_chip类型的变量nand_chip[],这...