From mboxrd@z Thu Jan 1 00:00:00 1970 From: Adam Ford Date: Sat, 2 Feb 2019 05:30:00 -0800 Subject: [U-Boot] IMX6 NAND boot regression In-Reply-To: References: <373ab899-ed9f-d5b7-cae4-910d4666125e@toradex.com> Message-ID: List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On Sat, Feb 2, 2019 at 12:29 AM Jagan Teki wrote: > > +Adam, Shyam > > On Sat, 2 Feb, 2019, 8:49 AM Stefan Agner > > Hi Tim, > > > > On 02.02.19 03:32, Tim Harvey wrote: > > > Stefan, > > > > > > I'm trying to track down an IMX6 SPL NAND boot regression that started > > > in v2018.07 with your patch series to mxs_nand. > > > > I am sorry about that. Unfortunately I did not had a design at hand where > > I was able to test the NAND driver in SPL... > > > > > > > > I bisected it back to '5346c31e305a37d39f535cc0d5ae87d8b7e81230 mtd: > > > nand: mxs_nand: use self init'. With this particular patch nand bbt > > > scanning would crash the board because of nand_chip.scan_btt not being > > > assigned. This was later fixed in > > > '96d0be07e7498e7174daa6f3b56fc807b9feb71d MTD: nand: mxs_nand_spl: Fix > > > empty function pointer for BBT' but cherry-picking that on top of > > > 5346c31 fixes the immediate crash while scanning but then I find that > > > mxs_read_page_ecc() hangs on the 4th page of reading u-boot.img from > > > the NAND. This gets worse 2 patches later where in > > > '28897e8d21f8e197e259a91c693de09cd81f2d5a: mtd: nand: mxs_nand: use > > > structure for BCH geometry' I find that the first byte of every page > > > read is wrong because mxs_nand_swap_block_mark() is getting called on > > > the page which swaps the first bytes with oob. > > > > > > There are several IMX6 boards out there using both NAND and SPL I > > > believe that I would assume were broken by this series. Any ideas on > > > the proper resolution? > > > > Look like 2017.03 can be stable boot from nand as for as my test is concern. > > We are also trying hard using git bisect, but seems like multiple breakings. > > Will keep posted if something move further. >From a different thread, someone was able to test these patches and found they fixed their booting issues: There was a broken function pointer here that was fixed and applied the imx-master, but pending merge with master http://patchwork.ozlabs.org/patch/1019440/ Configure ECC from SPL here: http://patchwork.ozlabs.org/patch/1020160/ Remove hard-coded ECC parameters since the patch above can autoset them. http://patchwork.ozlabs.org/patch/1026638/ Maybe those can help. adam > _______________________________________________ > U-Boot mailing list > U-Boot at lists.denx.de > https://lists.denx.de/listinfo/u-boot