Hi Scott, Roy. Scott's "mtd: eLBC NAND: increase bus timeout to maximum" patch is excluded from kernel with Roy's "P4080/eLBC: Make Freescale elbc interrupt common to elbc devices" patch. I don't know the reason for it but this causes bus monitor timeouts and corrupts nand flash while using mainline kernel. As I know there is an errata related to this topic, I think "increasing bus timeout to maximum" is a must. You can easly generate this situation with below commands:
Note: mtd4 is a Nor and mtd9 is a Nand partition. [root@P2020RDB root]# mount /dev/mtdblock9 /mnt/src/ mount: you must specify the filesystem type [root@P2020RDB root]# mount /dev/mtdblock9 /mnt/src/ -t jffs2 ��JFFS2 notice: (1950) jffs2_build_xattr_subsystem: complete building xattr subsystem, 0 of xdatum (0 unchecked, 0 orphan) and 0 of xref (0 dead, 0 orphan) found. [root@P2020RDB root]# dd if=/dev/mtd4 of=/mnt/src/uboot bs=1 fsl-lbc ffe05000.localbus: Local bus monitor time-out: LTESR 0x80000000 fsl-lbc ffe05000.localbus: command failed: fir 412e0000 fcr 0 status 80000000 mdr c0 Read of newly-erased block at 0x00430000 failed: -74. Putting on bad_list fsl-lbc ffe05000.localbus: Local bus monitor time-out: LTESR 0x80000000 fsl-lbc ffe05000.localbus: command failed: fir 426db000 fcr 6070d000 status 80000000 mdr ff Erase at 0x0042c000 failed immediately: errno -5 fsl-lbc ffe05000.localbus: Local bus monitor time-out: LTESR 0x80000000 Cfsl-lbc ffe05000.localbus: command failed: fir 412e0000 fcr 0 status 80000000 mdr c0 Read of newly-erased block at 0x00433000 failed: -74. Putting on bad_list JFFS2: marking eraseblock at 00433000 Regards. Emre _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
