This patchset tries to extend SPI-based boot code in sunxi SPL to support SPI NAND, following the same principle with current SPI NOR code (mimicking the behavior of sunxi BROM). In addition, as part of test to this patchset, some patches for Source Parts Inc. PopStick is attached, although marked DO NOT MERGE because the DT should come from Linux after it's ready.
To keep thr code that accesses SPI NAND as simple as possible, it assumes fixed page size, which is also what sunxi BROM does. The SUNIV SPL assumes 0x400 page size, but here to utilize the space better, in the attached example of PopStick, U-Boot main part is assumed to be with 0x800 page size (which is the real situation of the W25N01 flash used by PopStick).
Icenowy Zheng (8): sunxi: SPL SPI: extract code for doing SPI transfer sunxi: SPL SPI: add support for read command with 2 byte address sunxi: SPL SPI: allow multiple boot attempt sunxi: SPL SPI: add initial support for booting from SPI NAND sunxi: enable support for SPI NAND booting on SUNIV [DO NOT MERGE] sunxi: sync DT from my tree for PopStick [DO NOT MERGE, DIRTY HACK] sunxi: use UBI for environement storage [DO NOT MERGE] sunxi: add a defconfig for PopStick
arch/arm/dts/Makefile | 3 +- arch/arm/dts/suniv-f1c100s-licheepi-nano.dts | 16 ++ arch/arm/dts/suniv-f1c100s.dtsi | 26 ++ arch/arm/dts/suniv-f1c200s-popstick-v1.1.dts | 101 ++++++++ arch/arm/mach-sunxi/Kconfig | 16 ++ arch/arm/mach-sunxi/board.c | 4 +- arch/arm/mach-sunxi/spl_spi_sunxi.c | 247 ++++++++++++++----- board/sunxi/board.c | 1 + configs/popstick_defconfig | 35 +++ 9 files changed, 377 insertions(+), 72 deletions(-) create mode 100644 arch/arm/dts/suniv-f1c200s-popstick-v1.1.dts create mode 100644 configs/popstick_defconfig