Hi Maxime, On Sun, Dec 4, 2016 at 8:19 AM, Jagan Teki <ja...@openedev.com> wrote: > On Tue, Nov 22, 2016 at 6:08 PM, Maxime Ripard > <maxime.rip...@free-electrons.com> wrote: >> The CHIP Pro is a SoM made by NextThing Co, and that embeds a GR8 SIP, an >> AXP209 PMIC, a WiFi BT chip and a 512MB SLC NAND. >> >> Since the first Allwinner device coming whit an SLC NAND that doesn't have >> the shortcomings (and breakages) the MLC NAND has, we can finally enable >> the NAND support on a board by default. >> >> This is the occasion to introduce a bunch of additions needed imo to be >> able to come up with a sane NAND support for our users. >> >> The biggest pain point is that the BROM uses a different ECC and randomizer >> configuration than for the rest of the NAND. In order to lessen the number >> of bitflips, you also need to pad with random data the SPL image. >> >> Since it's quite tedious to do right (and most users won't be able to >> figure it out) and since if it is not done right, it will eventually turn >> into an unusable system (which is bad UX), we think that the best solution >> is to generate an SPL image that already embeds all this. We'll possible >> have to do the same thing for the U-Boot image (at least for the random >> padding) on MLC NANDs. >> >> The only drawback from that is that you need to flash it raw, instead of >> using the usual nand write, but it's just a different command, nothing >> major anyway. >> >> In order to flash it, from a device switched in FEL, on your host: >> sunxi-fel spl spl/sunxi-spl.bin >> sunxi-fel write 0x4a000000 u-boot-dtb.bin >> sunxi-fel write 0x43000000 spl/sunxi-spl-with-ecc.bin >> sunxi-fel exe 0x4a000000 >> >> And on the board, once u-boot is running (assuming the NAND is already >> erased): >> >> nand write.raw.noverify 0x43000000 0 40 >> nand write.raw.noverify 0x43000000 0x400000 40 >> >> nand write 0x4a000000 0x800000 0xc0000 >> >> I also encountered some weird bug in the private libgcc that prevents >> U-Boot from loading. Disabling CONFIG_USE_PRIVATE_LIBGCC fixes that. >> >> Let me know what you think, >> Maxime >> >> Changes from v1: >> - Allowed to build lib/bch.c for the host, and used that in the image >> builder >> - Fixed a bug in the NAND driver >> - Wrote a documentation on how to flash a NAND image on an Allwinner >> board >> - Fixed a few compilation breakages and issues >> - Moved U-boot offset out of the config header and into Kconfig >> - Moved the environment into UBI >> - Moved the environment selection to Kconfig >> - Moved the CMD_MTDPARTS options to Kconfig >> - Provide MTDIDS_DEFAULT and MTDPARTS_DEFAULT options through Kconfig >> - Added the tags from everyone >> >> Boris Brezillon (1): >> mtd: nand: add support for the TC58NVG2S0H chip > > Will skip this, already in tree. > >> >> Hans de Goede (1): >> sunxi: Enable UBI and NAND support >> >> Maxime Ripard (12): >> nand: sunxi: Fix modulo by zero error >> bch: Allow to build for the host >> tools: sunxi: Add spl image builder >> common: Move environment choice to Kconfig >> cmd: Add Kconfig option for CMD_MTDPARTS and related options >> mtd: sunxi: Select the U-Boot location config option >> mtd: sunxi: Change U-Boot offset >> sunxi: Add the default mtdids and mtdparts to our env >> nand: sunxi: Add options for the SPL NAND configuration >> scripts: sunxi: Build an raw SPL image > > Reviewed-by: Jagan Teki <ja...@openedev.com> > >> sunxi: Sync GR8 DTS and AXP209 with the kerne > > Sent the review comments about this. > >> sunxi: Add support for the CHIP Pro
Found many buildman issue with this series[1], please refer to master-next and let me know for if I miss any or fixes from you. [1] https://paste.ubuntu.com/23585255/ thanks! -- Jagan Teki Free Software Engineer | www.openedev.com U-Boot, Linux | Upstream Maintainer Hyderabad, India. _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
