On Mon, Apr 01, 2019 at 12:18:22PM +0200, Ahmad Fatoum wrote: > The newly added device tree based first stage fails to load the second > stage from MMC, which might be in relation to a preceding atmel_mci > "command/data timeout" message. > > Due to this and because it's not clear yet how viable it's to use the device > tree for the size-constrained first stage anyway, make CONFIG_OFDEVICE > configurable and provide a legacy board code based fallback whenever it's > unselected. The resulting image is 48K big with PBL_CONSOLE compared to > 72K for the device tree based version without PBL_CONSOLE. So where is the size limit for this SoC? > > If barebox can be shrunk further and the device tree support in the > first stage was fixed, this commit could be reverted for full device > tree goodness. > > The board code is a stripped down version of the sama5d3_xplained board's. > > Signed-off-by: Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx> > --- > .../arm/boards/microchip-ksz9477-evb/Makefile | 3 + > arch/arm/boards/microchip-ksz9477-evb/board.c | 127 ++++++++++++++++++ > .../boards/microchip-ksz9477-evb/lowlevel.c | 3 +- > ...rochip_ksz9477_evb_bootstrap_mmc_defconfig | 24 ++++ > arch/arm/mach-at91/Kconfig | 14 +- > 5 files changed, 167 insertions(+), 4 deletions(-) > create mode 100644 arch/arm/boards/microchip-ksz9477-evb/board.c > create mode 100644 arch/arm/configs/microchip_ksz9477_evb_bootstrap_mmc_defconfig I'd like to keep the number of defconfigs small, I'm not keen on adding such a specialized defconfig. Do we need a full barebox as first stage anyway? I made good experience on i.MX with adding specialized lowlevel drivers for MMC and NAND. > + .ocms = 0, > + .trr = 4, > + .twb = 5, > + .rbnsel = 3, > + .nfsel = 1 > +}; > + > +static void ek_add_device_nand(void) ek_? Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
