Figured out myself. If anyone has the same issue: set bit 12 of port A to 1:
GPADAT |= (1 << 11) fcipaq wrote: > > Hey everyone, > > I've got an ACER n310 (n300 series). It features a s3c2440 running at 300 > MHz, 64 MB SDRAM and 128 MB NAND ROM (it's Samsung k9f1g08). It's not > equipped with any NOR-Flash. Apart from that it's got quite a similar > configuration as FriendlyARM's Mini2440. > I downloaded the sources of u-boot and configured it according to my PDA's > hardware. So far, u-boot is running and I'm able to read the whole > NAND-Flash. But when I'm trying to unlock the NAND-Flash, I get the > following error message: > > n310 # nand unlock > > device 0 whole chip > > nand_unlock: start: 00000000, length: 134217728! > > nand_unlock: Device is write protected! > > Error unlocking NAND flash, write and erase will probably fail > > What I conclude from that is: the (NOT)WP-Pin is set to ground. The > Mini2440 is not effected by this kind of issue as (according to the > schematics) the (NOT)WP-Pin is connected to VCC. > However there must be a way to toggle this pin, as the original > ACER-bootloader and WM5 respectively are able to write to the flash. > Any ideas how to cancel the write protection or how to figure out what pin > is connected to WP (schematics are not available)? > Thanks in advance and best regards > > Daniel > -- View this message in context: http://old.nabble.com/ACER-n310-NAND-write-protection-issue-tp31592314p31600786.html Sent from the Uboot - Users mailing list archive at Nabble.com. _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
