Re: [Gumstix-users] NAND page size for Overo

SourceForge Headquarters 225 Broadway Suite 1600 San Diego, CA 92101 +1 (858) 454-5900

Thanks Dave!

On Apr 1, 2010, at 9:49 PM, Dave Hylands wrote:

> Running
> 
> mtd_debug info /dev/mtd0
> 
> reports the following:
> 
> mtd.type = MTD_NANDFLASH
> mtd.flags = MTD_CAP_ROM
> mtd.size = 524288 (512K)
> mtd.erasesize = 131072 (128K)
> mtd.writesize = 2048 (2K)
> mtd.oobsize = 64
> regions = 0
> 
> So this corresponds to a blocksize (aka erasesize) of 128K which is
> made up of 64 x 2K pages (aka writesize).

I just needed to check if everything matched up, which I think it does, at the moment, in terms of block size. 

Creating 7 MTD partitions on "omap2-nand":
0x000000000000-0x000000080000 : "xloader"
0x000000080000-0x000000240000 : "uboot"
0x000000240000-0x000000280000 : "uboot environment"
0x000000280000-0x000000680000 : "linux"
0x000000680000-0x00000a680000 : "system"
0x00000a680000-0x00000c680000 : "userdata"
0x00000c680000-0x00000e680000 : "cache"

root@overo:/# cat /proc/mtd
dev:  offset          size     erasesize  name
mtd0: 0x000000000000  00080000 00020000   "xloader"
mtd1: 0x000000080000  001c0000 00020000   "uboot"
mtd2: 0x000000240000  00040000 00020000   "uboot environment"
mtd3: 0x000000280000  00400000 00020000   "linux"
mtd4: 0x000000680000  0a000000 00020000   "system"
mtd5: 0x00000a680000  02000000 00020000   "userdata"
mtd6: 0x00000c680000  02000000 00020000   "cache"

Best regards,

Elvis