I have the same question...Could you please introduce the solution in
detail? Thank you
在2021年8月20日星期五 UTC+8 16:04:33<mustafa...@gmail.com> 写道：
> Thanks for your advice.
> It took me a lot of time, to make it work, I was only missing the
> ARM-Trusted-Firmware. And now it is working like charm.
> I needed to understand jaihouse better and every time I discover new and
> interesting information.
> Moustafa
> On Thursday, 19 August 2021 at 15:56:23 UTC+2 j.kiszka...@gmail.com wrote:
>
>> On 19.08.21 13:59, Moustafa Nofal wrote:
>> > I tried this configuration, but it did not work with me, I attached the
>> > log file. I have Pi4(4GB version). Initially installed 5.10, it did not
>> > compile so I back-patched to 5.3 and added CONFIG_HOTPLUG_CPU=y to the
>> > build configuration, I was able to understand, why it was essential.
>> > Then I tried different memory reservations using device tree:
>> > reserved-memory {
>> > #address-cells=<2>;
>> > #size-cells=<1>;
>> > ranges;
>> > memmap:memmap@0x20000000{
>> > reg = <0x0 0x20000000 0x10000000>;
>> > };
>> > };
>> > The memory is reserved and observable at proc/iomem but the result is
>> > either crash as in the log file or this:
>> > [ 1463.849868] jailhouse: request_mem_region failed for hypervisor
>> memory.
>> > [ 1463.849882] jailhouse: Did you reserve the memory with "memmap=" or
>> > "mem="?
>> > In rpi4.c
>> > I edited memory regions to begin with 2:
>> >
>> > .hypervisor_memory = {
>> > .phys_start = 0x2fc00000,
>> > .size = 0x00400000,
>> > },
>> > and the same for all memory regions.
>> >
>> > Something that I do not really understand, is the RAM address. In the
>> > jailhouse Image, there was a RAM at 0x20000000 and the image works
>> fine.
>> > But in my case there is nothing at this address.
>> > Any help would be appreciated and thanks in advance.
>> >
>>
>> Integrating all the loose ends of these targets is a hairy process (I
>> stopped counting hours I invested). Therefore, I strongly recommend
>> starting from jailhouse-images where the RPi4 works fine, at least here,
>> and then step-wise deviate from that towards whatever alternative
>> configuration is desired.
>>
>> Jan
>>
>> --
>> Siemens AG, T RDA IOT
>> Corporate Competence Center Embedded Linux
>>
>
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