riscv: Add support for SPI on Kendryte K210
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>
diff --git a/board/sipeed/maix/Kconfig b/board/sipeed/maix/Kconfig
index 4c42dd2..2cdea8e 100644
--- a/board/sipeed/maix/Kconfig
+++ b/board/sipeed/maix/Kconfig
@@ -53,4 +53,20 @@
imply CMD_GPIO
imply LED
imply LED_GPIO
+ imply SPI
+ imply DESIGNWARE_SPI
+ imply SPI_FLASH_GIGADEVICE
+ imply SPI_FLASH_WINBOND
+ imply DM_MTD
+ imply SPI_FLASH_MTD
+ imply CMD_MTD
+ imply ENV_IS_IN_SPI_FLASH
+ imply MMC
+ imply MMC_BROKEN_CD
+ imply MMC_SPI
+ imply CMD_MMC
+ imply DOS_PARTITION
+ imply EFI_PARTITION
+ imply CMD_PART
+ imply CMD_FS_GENERIC
endif