Fiasco.oc & trustzone

[Nikolay Golikov]

2012/9/14 Adam Lackorzynski <adam at os.inf.tu-dresden.de>:
>
> On Thu Sep 13, 2012 at 13:09:52 +0400, Nikolay Golikov wrote:
>> Yes, I found it. Is that tested on real hw? If I understand correctly,
>> it shouldn't work. Because it use l4sigma0_map_iomem for mapping
>> memory region to vmm's address space.
>
> It assumes a different approach for getting memory to the ns side.
> Initially bootstrap is configured to only uses a part of the memory so
> that the other part can be used for the ns side. From the point of view
> of the vmm this is 'iomem' because it's not ram. However, getting ram
> for the vmm shall also work via a dataspace.
>

Now I get strange error:
In bootstrap I define region for ns ram as Region::Arch.

SIGMA0: Dump of all resource maps
RAM:------------------------
[0:70000000;70000fff]
[0:70061000;7008ffff]
[0:70097000;70097fff]
[0:7009f000;7013ffff]
[4:70140000;70172fff]
[0:70173000;70177fff]
[4:70178000;7018efff]
[0:7018f000;71010fff]
[4:71011000;71011fff]
[0:71012000;710fffff]
[4:71100000;7127dfff]
[0:7127e000;7effffff]
IOMEM:----------------------
[0:0;6fffffff]
[0:80000000;ffffffff]

But on

  int err = l4sigma0_map_iomem(_sigma0.cap(), Ram_base, Ram_base, size, 1);
(Ram_base = 0x80000000, size = 0x4000000)

I have an error:

TZ-VMM  | L4Re[rm]: unhandled read page fault @8858a820 pc=8858a820
TZ-VMM  | L4Re: unhandled exception: pc=0x8858a820

Before it mapping for aisptz works normally:

l4sigma0_map_iomem(_sigma0.cap(), _base, _base, AISPTZ_SIZE, 1)
(_base = 0x53F00000)