Noux application

[Joseph Lee]

Hi Martin,

On Mon, Nov 16, 2015 at 12:37 PM, Martin Stein <martin.stein at ...1...
> wrote:

> Hi Joseph,
>
> Am 15.11.2015 um 03:05 schrieb Joseph Lee:
> > Hi Martin, thank you so much! it works for me.
>
> Nice! Could you please also share with us what the problem was and what
> solved it.
>

the problem was that the SDHC driver timed out which then generates the
"Completion host signal timed out" error message. It is solved by replacing

   if (!wait_for<Irqstat>(irq_goal, _delayer)) {
      PERR("Completion host signal timed out");

in [1] with

   if (!wait_for<Irqstat>(irq_goal, _delayer, 3000)) {
      PERR("Completion host signal timed out %x", read<Irqstat>());


[1] repos/os/src/drivers/sd_card/spec/imx53/esdhcv2.cc: line 116


>
> > Now I just need to use the sd_card driver with Genode trustzone feature
> > (hw_imx53_qsb_tz). I tried to incorporate sd_card driver with tz_vmm run
> > script and make run/tz_vmm. I get the following log messages and it gets
> > stuck. it doesn't even run tz_vmm application. I appreciate if you can
> > give me some hints to fix this.
>
> As already mentioned earlier in this discussion, hw_imx53_qsb_tz sets
> the ESDHC MMIO and IRQs unsecure. This is done in [1], [2] and [3]. You
> can find examples on how to do Trustzone settings specifier-dependend in
> my working branch [4].
>

I tried to modify trustzone settings for ESDHC MMIO and IRQs  and make
run/tz_vmm. it hangs when the Linux kernel tries to access the sd_card and
displays the following error message.

mxsdhci: MXC Secure Digital Host Controller Interface driver
mxsdhci: MXC SDHCI Controller Driver.
[init -> tz_vmm] Cpu state:
[init -> tz_vmm]   Register     Virt     Phys
[init -> tz_vmm] ---------------------------------
[init -> tz_vmm]   r0         = c5bc6e00 [85bc6e00]
[init -> tz_vmm]   r1         = 00000001 [00000000]
[init -> tz_vmm]   r2         = c030aef8 [8030aef8]
[init -> tz_vmm]   r3         = c690e000 [50004000]
[init -> tz_vmm]   r4         = c5bc6e00 [85bc6e00]
[init -> tz_vmm]   r5         = c5bc6e00 [85bc6e00]
[init -> tz_vmm]   r6         = 00000000 [00000000]
[init -> tz_vmm]   r7         = 00000001 [00000000]
[init -> tz_vmm]   r8         = c088cf50 [8088cf50]
[init -> tz_vmm]   r9         = 00000000 [00000000]
[init -> tz_vmm]   r10        = 00000001 [00000000]
[init -> tz_vmm]   r11        = c5b5b0c0 [85b5b0c0]
[init -> tz_vmm]   r12        = 00002000 [00000000]
[init -> tz_vmm]   sp         = 00000000 [00000000]
[init -> tz_vmm]   lr         = 00000000 [00000000]
[init -> tz_vmm]   ip         = c0309288 [80309288]
[init -> tz_vmm]   cpsr       = 20000013
[init -> tz_vmm]   sp_und     = c08e3978 [808e3978]
[init -> tz_vmm]   lr_und     = c08e3978 [808e3978]
[init -> tz_vmm]   spsr_und   = 00000000 [00000000]
[init -> tz_vmm]   sp_svc     = c5023ee8 [85023ee8]
[init -> tz_vmm]   lr_svc     = c030afd0 [8030afd0]
[init -> tz_vmm]   spsr_svc   = 60000013 [00000000]
[init -> tz_vmm]   sp_abt     = c08e396c [808e396c]
[init -> tz_vmm]   lr_abt     = c0038a20 [80038a20]
[init -> tz_vmm]   spsr_abt   = 20000093 [00000000]
[init -> tz_vmm]   sp_irq     = c08e3960 [808e3960]
[init -> tz_vmm]   lr_irq     = c0038a80 [80038a80]
[init -> tz_vmm]   spsr_irq   = 60000093 [00000000]
[init -> tz_vmm]   sp_fiq     = 00000000 [00000000]
[init -> tz_vmm]   lr_fiq     = 00000000 [00000000]
[init -> tz_vmm]   spsr_fiq   = 00000000 [00000000]
[init -> tz_vmm]   ttbr0      = 85e34019
[init -> tz_vmm]   ttbr1      = 80004019
[init -> tz_vmm]   ttbrc      = 00000000
[init -> tz_vmm]   dfar       = c690e02c [5000402c]
[init -> tz_vmm]   exception  = data_abort
[init -> tz_vmm] Could not handle data-abort will exit!

Thanks,


>
> Cheers,
> Martin
>
> [1] repos/base-hw/src/core/include/spec/imx53/trustzone/csu.h:159
> [2] repos/base-hw/src/core/include/spec/imx53/trustzone/csu.h:215
> [3] repos/base-hw/src/core/spec/imx53/trustzone/platform_support.cc:48
> [4] https://github.com/m-stein/genode/tree/1497_usb_armory_demo
>
>
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