[raspi-internals] Re: Working GNU toolchain for VC4
- From: Martin Sperl <rpiinternal@xxxxxxxxxxxxxxxx>
- To: raspi-internals@xxxxxxxxxxxxx
- Date: Tue, 26 Apr 2016 12:08:16 +0200
On 23.04.2016, at 15:25, Julian Brown <julianbrown99@xxxxxxxxx> wrote:
Possible next steps for anyone with the motivation are probably:
* Getting code running on the real hardware! It'd be nice to get a real Pi
substituting for resim in GCC tests (downloading each test successively over
serial, and automatically rebooting on crashes). That means enabling SDRAM
and "pivoting" to a small monitor of some sort from there, I think. (This is
about where I've run out of steam.)
For quick testing: use model A or Zero and boot it via USB (does not work with
any model that has a hub) using the rpiboot tools provided by the foundation
via //github.com/raspberrypi/tools.
When you start after the the usbbootloader.bin (have your own msd.elf in the
local directory) then the sram should be enabled already - or you build your
fat image and boot from that ...
Then you can take a serial uart to get the output for verification - you could
even use zmodem to load the code to execute over serial (when you get that far
as a simple boot driver).
Martin
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