Problem with build jfss2 filesystem

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originally posted by hippo@Feb 2 2007, 12:05 PM

you will need zlib to build user/mtd-utils/build/mkfs.jffs2.

make sure you have zlib install in your linux pc.

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hi hippo,

thanks for your help, now I can successfully make the kernel, but when I download and mount the jffs2, there is problem:

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/> mount -t jffs2 /dev/mtdblock0 /mnt

jffs2: Too few erase blocks (0)

mount: Mounting /dev/mtdblock0 on /mnt failed: Invalid argument

/>

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I see the post before as follow:

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You need to learn flash programmer before using mtd.

First, resize your cfi flash to 4M base addr 0 ,in sopc builder, and regenerate sof.

Then enable epcs mtd and cfi mtd,

in drivers/mtd/maps/

edit epcs_map.c

CODE

static struct mtd_partition epcs_partitions[] =

{

{

.name = "sof_kernel",

.size = 0x200000,

.offset = 0x000000,

}

};

static const char *part_probes[] __initdata = {NULL};

edit altera.c

CODE

static struct mtd_partition alteramap_partitions[] = {

{

.name = "romfs/jffs2",

.size = 0x400000,

.offset = 0x000000,

}

};

Rebuild kernel image from the start "make clean", "make linux_hwselect...."....

Follow the wiki,

http://nioswiki.jot.com/wikihome/operating...flashprogrammer (http://nioswiki.jot.com/wikihome/operating...flashprogrammer)

To program sof and zImage to your EPCS.

And erase cfi flash.

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Did it the problem of epcs_map.c and edit altera.c. I use the EPCS4, which is as large as 512Kbytes.

Should edit the files of epcs_map.c and edit altera.c? How to do it.

Waiting your reply, ths!

Ths again for the bison problem I post before, I download the bison package installed ,then make success, there is no ftp build problems.

giantice

02th Feb 2007