am5728 挂载yaffs2根文件系统

ce guo

文件系统总是挂载不成功，这是哪方面的错误呢？

U-Boot SPL 2016.05-00319-g8d0b2ca-dirty (Sep 06 2017 - 09:07:23)
Linux version 4.4.41-gf9f6f0db2d (gc@gc-virtual-machine) (gcc version 5.3.1 20160113 (Linaro GCC 5.3-2016.02) ) #15 SMP PREEMPT Wed Sep 13 10:21:59 CST 2017
[   67.325144] nand: device found, Manufacturer ID: 0x2c, Chip ID: 0xdc
[   67.331525] nand: Micron MT29F4G08ABAEAWP
[   67.335572] nand: 512 MiB, SLC, erase size: 256 KiB, page size: 4096, OOB size: 224
[   67.343326] using OMAP_ECC_BCH16_CODE_HW ECC scheme
[   67.348312] 10 ofpart partitions found on MTD device 8000000.nand
[   67.354447] Creating 10 MTD partitions on "8000000.nand":
[   67.359872] 0x000000000000-0x000000040000 : "NAND.SPL"
[   67.376119] 0x000000040000-0x000000080000 : "NAND.SPL.backup1"
[   67.383018] 0x000000080000-0x0000000c0000 : "NAND.SPL.backup2"
[   67.389854] 0x0000000c0000-0x000000100000 : "NAND.SPL.backup3"
[   67.406684] 0x000000100000-0x000000180000 : "NAND.u-boot-spl-os"
[   67.413748] 0x000000180000-0x000000380000 : "NAND.u-boot"
[   67.420486] 0x000000380000-0x0000003c0000 : "NAND.u-boot-env"
[   67.437270] 0x0000003c0000-0x000000400000 : "NAND.u-boot-env.backup1"
[   67.454754] 0x000000400000-0x000000c00000 : "NAND.kernel"
[   67.462791] 0x000000c00000-0x000020000000 : "NAND.file-system"
[   67.772577] yaffs: dev is 32505865 name is "mtdblock9" rw
[   67.773097] omap_hsmmc 480b4000.mmc: no pinctrl state for sdr25 mode
[   67.773102] omap_hsmmc 480b4000.mmc: no pinctrl state for sdr12 mode
[   67.790917] yaffs: passed flags ""
[   69.670585] VFS: Mounted root (yaffs2 filesystem) on device 31:9.
[   69.676737] devtmpfs: error mounting -2
[   69.680787] Freeing unused kernel memory: 336K (c08f8000 - c094c000)
[   69.687225] This architecture does not have kernel memory protection.
[   69.693729] Kernel panic - not syncing: Requested init/lnuxrc failed (error -2).

使用的nand为MT29F4G08ABAEAWP Page Size : (4K + 224)Byte

6 年多前

0 ce guo 6 年多前

Intellectual 576 points

我的根文件系统应该是没有问题，用这个fs制作成ramdisk格式的内核可以直接挂载上，

可是使用mkyaffs2image工具制作的yaffs2就出现上述问题，

0 Denny%20Yang99373 6 年多前回复 ce guo

TI__Mastermind 19320 points

可能是这个工具制作的有问题

可以试试通过RAMDISK启动，然后直接在板子上创建YAFFS2，手动mount

0 ce guo 6 年多前回复 Denny%20Yang99373

Intellectual 576 points

/ #
/ #
/ # mount
/dev/root on / type ext4 (rw,relatime,block_validity,delalloc,barrier,user_xattr,acl,errors=remount-ro)
devtmpfs on /dev type devtmpfs (rw,relatime,size=837924k,nr_inodes=98195,mode=755)
proc on /proc type proc (rw,relatime)
tmpfs on /tmp type tmpfs (rw,relatime)
sysfs on /sys type sysfs (rw,relatime)
devpts on /dev/pts type devpts (rw,relatime,mode=600,ptmxmode=000)
/ # mount -t yaffs2 /dev/mtdblock9 /mnt
[ 377.887818] yaffs: dev is 32505865 name is "mtdblock9" rw
[ 377.893242] yaffs: passed flags ""
/ # mount
/dev/root on / type ext4 (rw,relatime,block_validity,delalloc,barrier,user_xattr,acl,errors=remount-ro)
devtmpfs on /dev type devtmpfs (rw,relatime,size=837924k,nr_inodes=98195,mode=755)
proc on /proc type proc (rw,relatime)
tmpfs on /tmp type tmpfs (rw,relatime)
sysfs on /sys type sysfs (rw,relatime)
devpts on /dev/pts type devpts (rw,relatime,mode=600,ptmxmode=000)
/dev/mtdblock9 on /mnt type yaffs2 (rw,relatime)
/ #
/ # cd mnt/
/mnt # ls
lost+found

通过ramdisk启动之后进入根文件系统，之后通过mount -t yaffs2 /dev/mtdblock9 /mnt命令挂载yaffs2到/mnt，进入/mnt目录，可是ls只看到lost+found目录

这是不是yaffs2格式的文件系统制作有问题呢

0 Denny%20Yang99373 6 年多前回复 ce guo

TI__Mastermind 19320 points

做的文件系统里没有放文件？

如果放了，那就是没做好

0 ce guo 6 年多前回复 Denny%20Yang99373

Intellectual 576 points

感谢回复

文件系统是有放文件的，文件系统的必须文件是都有的。

因为内核没有对yaffs2文件系统的支持，所以后来使用了ubifs，已经成功挂载了

参考：

http://www.deyisupport.com/question_answer/dsp_arm/sitara_arm/f/25/t/59921.aspx?pi239031348=1

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am5728 挂载yaffs2根文件系统