烧写jffs2遇到的问题及解决方法

烧写jffs2遇到的问题及解决方法 (2012-11-15 12:21:19)转载▼
标签： 文件系统  开发板  修改  设置  制作  it 分类： 计算机类
最近在弄hi3531的开发板，自制文件系统烧写进32M spi flash启动后出现如下问题：
Node at 0x0000f568 with length 0x00000b20 would run over the end of the erase block
Perhaps the file system was created with the wrong erase size?
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0000f56c: 0x0b20 instead
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0000f570: 0x74a8 instead
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0000f574: 0x001d instead
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0000f578: 0x0014 instead
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0000f57c: 0x81ed instead
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0000f580: 0x01fd instead
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0000f584: 0x7b70 instead
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0000f588: 0x08ca instead
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0000f58c: 0x08ca instead
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x0000f590: 0x08ca instead
Further such events for this erase block will not be printed
usb 1-1: new high speed USB device number 43 using hiusb-ehci
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00010000: 0xfd51 instead
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00010004: 0xc38c instead
jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found at 0x00010008: 0x9d64 instead
仔细检查之后发现是制作文件系统时块大小设置错了，只要修改mkfs.jffs2后-e的参数即可，例如本例，现在spi flash的块大小只有64k，而我制作文件系统之时设置成256k即0x40000，修改如下：
#osdrv/pub/bin/pc/mkfs.jffs2 -d osdrv/pub/rootfs_uclibc -l -e 0x40000 -o osdrv/pub/rootfs_uclibc_256k.jffs2
osdrv/pub/bin/pc/mkfs.jffs2 -d osdrv/pub/rootfs_uclibc -l -e 0x10000 -o osdrv/pub/rootfs_uclibc_256k.jffs2


备注:mxic spi flash大部分为64K块大小