This is a basic driver for the sunxi NAND controller for Allwinner A20. It supports both SPL and U-Boot.
The driver uses DMA for data transfers. It does not support writing.
To enable user reading from NADN, the a20_nandread command was added.
Piotr Zierhoffer (4): sunxi: nand: Add basic sunxi NAND driver with DMA support sunxi: nand: Add board configuration options sunxi: nand: Add a20_nandread command to load image from NAND in SPL sunxi: nand: Add information to sunxi that it was run from NAND in SPL
arch/arm/cpu/armv7/sunxi/board.c | 4 + board/sunxi/Kconfig | 10 ++ board/sunxi/Makefile | 1 + board/sunxi/nand.c | 315 +++++++++++++++++++++++++++++++++++++++ board/sunxi/nand.h | 146 ++++++++++++++++++ common/Makefile | 1 + common/cmd_a20_nandread.c | 25 ++++ include/configs/sunxi-common.h | 13 ++ 8 files changed, 515 insertions(+) create mode 100644 board/sunxi/nand.c create mode 100644 board/sunxi/nand.h create mode 100644 common/cmd_a20_nandread.c