mini6410 fw_env.config

Hi All,

I'm trying to set the uboot environment from linux, but I am unable to set
and variables using fw_setenv. I can read variables with fw_printenv with
just this as my /etc/fw_env.config file:

# MTD device name Device offset Env. size Flash sector size
/dev/mtd0         0x40000       0x20000   0x20000

fw_setenv var=value returns:
Can't open /dev/mtd0: Permission denied
Error: can't write fw_env to flash

I suspect that I have the wrong values in my fw_env.config file.

Can anyone tell me how to calculate the correct values?

cat /proc/mtd returns

dev:    size   erasesize  name
mtd0: 00080000 00020000 "Bootloader"
mtd1: 00500000 00020000 "Kernel"
mtd2: 3fa80000 00020000 "File System"

Thanks,

Colin.

MTD partition 0 (mtd0) is defined as *READ-ONLY* in
arch/arm/mach-s3c64xx/mach-mini6410.c (for SLC)
---------------------------
   .name       = "Bootloader",
   .offset     = 0,
   .size       = (4 * 128 *SZ_1K),
   .mask_flags = MTD_CAP_NANDFLASH,
---------------------------
and drivers/mtd/nand/s3c-nand.c (for MLC).

You can modify to
   .mask_flags = 0,
or simply remove it

Thanks 911gt3. 

I'll give that a go tomorrow :-)

Thanks again 911gt3.

Your solution is perfect!!

Sorry for the late reply.

Dear,

I'm not able to compile fw_setenv tool for my mini6410.  

Can you send me the executable please?

Thanks a lot !!!!!!!!!!!