I think the only thing you can't do in linux is manage the MMU, since sel4
reserves that task to itself (plus it's a ring 0 operation and sel4 IIRC
runs guests, even the linux kernel, as ring 3)
What I'm not so sure about is I/O capabilities.
Does seL4 require a system call to do I/O or can seL4 manipulate a task's
IO permission bitmap?
If the former, I think you could tie an exception handler to the linux
kernel and use that to emulate any privileged opcodes.
On Mon, Jan 4, 2016 at 1:35 PM, Julien Delange <julien.delange(a)gmail.com>
So, there is no chance for running linux on top of
sel4 on a beagleboard
On Mon, Jan 4, 2016 at 4:30 PM, Peter Chubb <peter.chubb(a)nicta.com.au>
>>>> "Andrea" == Andrea Sorbini <asorbini(a)rti.com> writes:
Andrea> I can confirm from experience that seL4 supports both serial
Andrea> and ethernet on the FreeScale Sabre Lite i.MX6 board (although
Andrea> through some buggy, GPL'd, drivers for ethernet). No idea
Andrea> about USB nor running Linux on top of seL4.
For running virtualised environments, you need a platform with the ARM
virtualisation extensions -- a Cortex A53, A15 or A7. Our preferred
platform was the Odroid XU; as this has been discontinued, we're
looking around for a different readily available platform, preferably
with a System MMU to protect all DMA. It's looking like the Nvidia
Tegra TK1 will be apropriate, but we haven't started the port yet.
Dr Peter Chubb Tel: +61 2 8306 0552
Software Systems Research
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