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...
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: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 structmtd_info { //... /* MTD devices do not have any parent. MTD partitions do. */ structmtd_info *parent; /* * Offset of the ...
在这段代码中,opts->writeoob=1,先执行了meminfo->write_oob,写了flash的OOB区,然后执行到了meminfo->write,meminfo->write=nand_write static int nand_write (struct mtd_info *mtd, loff_t to, size_t len, size_t * retlen, const u_char * buf) { return (nand_write_ecc (mtd, to, len, ...
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...
static int do_helpme(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) ...
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...
a bd_info struct will be passed instead => 下面介绍uboot的一些常用命令 reset 重启uboot => help reset reset - Perform RESET of the CPU Usage: reset => printenv => printenv arch=arm baudrate=38400 board=vexpress board_name=vexpress ...
初始化函数如下:static void nand_init_chip(struct mtd_info *mtd, struct nand_chip *nand, ulong base_addr){mtd->priv = nand;nand->IO_ADDR_R = nand->IO_ADDR_W = (void __iomem *)base_addr;board_nand_init(nand);if (nand_scan(mtd, 1) == 0) {if (!mtd->name)mtd->name = (...
一、nandflash分区信息OpenJTAG>mtdpartdevice nand0 <nandflash0>, # parts = 4#:name size offset...
info-》start[0] + info-》size - 1: info-》start[s_last[bank]+1] - 1, bank+1); //flash_erase 是drivers/mtd/cfi_flash.c 提供的flash 擦除接口。 rcode = flash_erase (info, s_first[bank], s_last[bank]); } } printf (“Erased %d sectors ”, erased); ...