Add a tool to generate raw NAND images

Generating raw NAND images is particularly useful for boot0 images
creation since the mainline driver is not supporting the funky layout
used by Allwinner's ROM code to load the boot0 binary from NAND.

This tools also allows one to generate raw images for 'normal' partitions
so that they can be flashed before soldering on the NAND on the board
(using a regular NAND programmer).

The tool takes care of generating ECC bytes and randomizing data as
expected by the NAND controller, and re-arranging the ECC/data sections
correctly.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>

Makefile

@@ -41,7 +41,7 @@ FEXC_LINKS = bin2fex fex2bin
 # Tools which are only useful on the target
 TARGET_TOOLS = sunxi-pio
 
-MISC_TOOLS = phoenix_info
+MISC_TOOLS = phoenix_info sunxi-nand-image-builder
 
 # ARM binaries and images
 # Note: To use this target, set/adjust CROSS_COMPILE and MKSUNXIBOOT if needed

README.md

@@ -46,6 +46,9 @@ Manipulate PIO register dumps
 ### sunxi-nand-part
 Tool for manipulating Allwinner NAND partition tables
 
+### sunxi-nand-image-builder
+Tool used to create raw NAND images (including boot0 images)
+
 ### jtag-loop.sunxi
 ARM native boot helper to force the SD port into JTAG and then stop,
 to ease debugging of bootloaders.