i.mx53 NIC driver

[Jinhong Kim]

Hi, Genode experts

Currently I'm working with the TrustZone VMM example from Genode based
on Genode 16.05 on i.MX53 QSB.
And I want to move NIC device driver from normal world to secure world.

To achieve this,
1. Change FEC setting of <CSU.h> to SECURE.
(original configuration of FEC is UNSECURE.)

However, data abort is occured during boot on imx53 qsb.

Is there any hints or suggestion to solve this problem?



Thank you for your attention.


Regards

Jinhon Kim

[Stefan Kalkowski]

Hi,

Post by Jinhong Kim
Hi, Genode experts
Currently I'm working with the TrustZone VMM example from Genode based
on Genode 16.05 on i.MX53 QSB.
And I want to move NIC device driver from normal world to secure world.
To achieve this,
1. Change FEC setting of <CSU.h> to SECURE.
(original configuration of FEC is UNSECURE.)
However, data abort is occured during boot on imx53 qsb.

By changing the CSU settings, you only prohibited bus accesses from the
normal world to that device. Nevertheless the Linux OS in the normal
world still tries to access the network card - that is why you
experienced the data abort. You have to disable the FEC access by
disabling that card in your Linux configuration.

Apart from that, AFAIK there is no FEC driver for Genode existent until now.

Regards
Stefan

Post by Jinhong Kim
Is there any hints or suggestion to solve this problem?
Thank you for your attention.
Regards
Jinhon Kim
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