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The ARM core on the Raspberry Pi is accessible via JTAG. It requires a board with an FT4232H or FT2232H chip. See https://github.com/dwelch67/raspberrypi/tree
by sigjuice 12y ago
The ARM core on the Raspberry Pi is accessible via JTAG. It requires a board with an FT4232H or FT2232H chip. See https://github.com/dwelch67/raspberrypi/tree/master/armjtag https://github.com/dwelch67/raspberrypi/tree/master/armjtag for details.
- exDM69 12y agoOk, nice to know that it has a JTAG even on the production device. However, if that plugs into the "big" ARM core, that's of no use with the early boot process (which uses the VideoCore, according to the post below).