On Sat, Dec 07, 2013 at 09:18:32AM +0100, Pali Rohár wrote: > On Saturday 07 December 2013 01:00:27 Sebastian Reichel wrote: > > On Fri, Dec 06, 2013 at 02:27:25PM -0800, Tony Lindgren wrote: > > > * Sebastian Reichel <s...@debian.org> [131206 13:37]: > > > > Nokia N900 DT boot breaks for me using 3.13-rc3. You can > > > > see the relevant kernel output below. Disabling the AES > > > > module in the omap3-n900.dts with status = "disabled" > > > > fixed the boot for me. > > > > > > OK thanks for letting me know. How about the following patch > > > to fix it? > > > > That's basically what I did to fix the problem. > > > > I guess the proper fix would be a runtime check if the device > > can be accessed (if that's possible). AFAIK it is possible to > > use the AES module on the N900 if the bootloader is slightly > > patched. > > > > Pali, can you elaborate more about this? I've seen, that you > > added a section about this on [0]. > > > > [0] http://elinux.org/N900#M-Shield > > > > -- Sebastian > > > > Yes, if you want to use M-Shield on Nokia N900, you need to use > new version of signed Nokia X-Loader which enable M-Shield usage > outside secure world. > > Because this updated X-Loader is not official and I think nobody > has it in n900, please disable using these M-Shield crypto > modules on n900.
Is the updated X-Loader available somewhere?
> Without patched updated X-Loader kernel will crash.
That's what this thread is about :) It might be better to have a
runtime check for the crypto hw's accessability by adding something
like this to the driver's probe function:
if (!aes_module_is_accessible()) {
dev_err(&pdev->dev, "Usage of OMAP's AES module is blocked\n");
return -ENODEV;
}
That would require, that aes_module_is_accessible() can actually be
implemented.
P.S.: I fixed the mail address of Aaro Koskinen. His nokia mail
address doesn't work anymore.
-- Sebastian
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