Flash - Attempt to write not page aligned data

Holger Eberhard102906

We try to use NAND Flash in DM8168 DVR-RDK 03.x0.00.00.
I found that write to FLASH via mtd is possible only if the data size is page aligned.
And error occurs "nand_do_write_ops: Attempt to write not page aligned data" if data is not aligned to page.
Is a patch available for nand-base.c and this issue ?
What files of the linux nand driver must be patched else ?

over 12 years ago

0 Leo Zhengxiaochao over 12 years ago

Prodigy 140 points

Hi,

1, you can use the emulator to erase flash in CCS, then write program.

2, on the u-boot command line, flash erase and then writing.

3, use the MTD command to erase NAND, formatted with JFFS2 root file system, you can mount the partition.

0 Holger Eberhard102906 over 12 years ago in reply to Leo Zhengxiaochao

Genius 4570 points

In the meantime, I crosscompiled MTD-utils and I can use nandwrite, nanddump, flash_erase for the commandline.
But the problem occurs in nand_do_write_ops(). Currently a disabled the page align check here.
The following functions can handle partial page flash writing.
Actually I was looking for a patch for nand_base.c.

0 Leo Zhengxiaochao over 12 years ago in reply to Holger Eberhard102906

Prodigy 140 points

Hi,

1, you do not need to recompile, there are MTD tools in the root file system.

2, you need to use the "flash_eraseall" command to erase flash, character device.

Processors

Processors forum

Flash - Attempt to write not page aligned data