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Mediatek MT7620A / Ralink RT2880 u-boot forked to add support for N25Q512 Flash chip

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cidermole/ralink-uboot

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Ralink u-boot

Prerequisites

Get Ralink SDK, filename: MTK_Ralink_ApSoC_SDK_4120_20120607.tar.bz2

Unpack the "toolchain/buildroot-gcc342" folder to "/opt/buildroot-gcc342", or wherever you want, but then you need to replace the paths below.

Building

$ git clone [email protected]:cidermole/ralink-uboot.git
$ export CONFIG_CROSS_COMPILER_PATH=/opt/buildroot-gcc342/bin  # necessary if not in /opt
$ export PATH=/opt/buildroot-gcc342/bin:$PATH
$ make rt2880_config
$ git checkout -- .config autoconf.h  # or $ make menuconfig, but there you're on your own
$ make
$ hexdump -C uboot.bin | head  # look at first bytes to verify

NOTE: The output filename for directly flashing the binary has to be uboot.bin.

Reference first bytes

The first bytes of uboot.bin are some sort of interrupt vector table and should look approximately like this (exact address entries may vary):

00000000  ff 00 00 10 00 00 00 00  fd 00 00 10 00 00 00 00  |................|
00000010  7f 02 00 10 00 00 00 00  7d 02 00 10 00 00 00 00  |........}.......|
00000020  7b 02 00 10 00 00 00 00  79 02 00 10 00 00 00 00  |{.......y.......|
00000030  77 02 00 10 00 00 00 00  75 02 00 10 00 00 00 00  |w.......u.......|
00000040  73 02 00 10 00 00 00 00  71 02 00 10 00 00 00 00  |s.......q.......|

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Mediatek MT7620A / Ralink RT2880 u-boot forked to add support for N25Q512 Flash chip

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