Hi Heiko,
On 9 October 2015 at 09:30, Heiko Schocher hs@denx.de wrote: [..]
I just updated the "ubi_sync_with_linux" branch on u-boot-ubi.
It seems UBI/UBIFS now work with the NAND on the aristainetos2 board, but my stomach says, there are some subtile issues ...
Still needs more testing, also not tested yet UBI on the SPI NOR on this board.
If I "nand erase" the mtd device, and try "ubi part ..." it fails
:-(
But If I flash_eraseall under linux the device, and then make "ubi part..." in U-Boot, commmand succeeds ...
Tested it on my custom AM335x board. Haven't used mainline U-Boot but cherry-picked the following commits:
linux, compat: add missing definitions for ubi ubi/ubifs: some bugfixes ubi,ubifs: sync with linux v4.2 ubi: reset mtd_devs when ubi part fail
Commits apply cleanly except for "linux, compat: add missing definitions for ubi" which was trivial to backport anyway.
U-Boot built fine, but there was a warning:
drivers/mtd/ubi/fastmap.c: In function 'ubi_attach_fastmap': drivers/mtd/ubi/fastmap.c:816:2: warning: pointer targets in passing argument 3 of 'scan_pool' differ in signedness [-Wpointer-sign] ret = scan_pool(ubi, ai, fmpl->pebs, pool_size, &max_sqnum, &free);
Just sent this patch which should fix it: http://patchwork.ozlabs.org/patch/531842/
The board seems to work fine, and I can even to "nand erase" and "ubi part" without any problem.
However, I'm still seeing the same warning I had before, when my partition is attached:
ubi0: default fastmap pool size: 200 ubi0: default fastmap WL pool size: 100 ubi0: attaching mtd1 WARNING in drivers/mtd/ubi/fastmap.c line 846 ubi0: scanning is finished ubi0: attached mtd1 (name "mtd=7", size 509 MiB) ubi0: PEB size: 131072 bytes (128 KiB), LEB size: 129024 bytes ubi0: min./max. I/O unit sizes: 2048/2048, sub-page size 512 ubi0: VID header offset: 512 (aligned 512), data offset: 2048 ubi0: good PEBs: 4072, bad PEBs: 4, corrupted PEBs: 0 ubi0: user volume: 4, internal volumes: 1, max. volumes count: 128 ubi0: max/mean erase counter: 5/3, WL threshold: 4096, image sequence number: 2068197800 ubi0: available PEBs: 3504, total reserved PEBs: 568, PEBs reserved for bad PEB handling: 76
@Richard, any ideas? Do you know which of the fixes should fix that?