This enables configs necessary for using SPI. The environment is saved to
the very end of SPI flash. This is unlikely to be overwritten unless the
entire flash is reprogrammed.
This also supplies a default bootcommand. It loads an image and device tree
from the first partition of the MMC. This is a minimal/least effort
bootcmd, so suggestions (especially in the form of patches) are welcome. I
didn't set up distro boot because I think it is unlikely that any
general-purpose linux distros will ever be ported to this board.
Signed-off-by: Sean Anderson <seanga2@gmail.com>
Tested-by: Chrstopher Obbard <obbardc@gmail.com>
Reviewed-by: Rick Chen <rick@andestech.com>
In the boot flow description add the RESET and BOOT button as well as the
function of the DTR and RTS lines of the serial interface.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Provide a defconfig that can be used to build U-Boot for the Maix boards
running upon OpenSBI.
Update the documentation.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Sean Anderson <seanga2@gmail.com>
Provide the required settings for the debug UART.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Sean Anderson <seanga2@gmail.com>
The MAIXDUINO runs fine with the sipeed_maix_bitm_defconfig but a different
board id parameter should be passed to kflash.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Sean Anderson <seanga2@gmail.com>
This patch adds documentation for the Sipeed Maix bit, and more generally
for the Kendryte K210 processor.
Signed-off-by: Sean Anderson <seanga2@gmail.com>
