Re: memory dump

Hi Abhay,

Am 03.12.2015 um 16:44 schrieb Abhay Amala:

I could put the RAM data into a file using the following snippet and get a file with size 268.4 MB. But when i tried to make some kind memory analysis on the file, i get something which is different from what i expect.

What is the inconsistency you're observing and what analysis methods do you use - can you go in more detail?

Is this snippet the right one to do memory imaging? thanks in advance for answers.

     size_t size = Vm_base::ram()->size(); 
     void* addr = (void*)Vm_base::ram()->local();
     FILE *fd = fopen("memdump.dd", "w+b");
     if(fd != NULL)
             fwrite(addr, 1, size, fd);            

Unfortunately, I'm not very used to libc file handling. However, from what I know, this looks good. You could check whether it's correct by executing it in a Linux (using a properly prepared RAM region).

Regarding your cache-flush SMC: Have you added a certain register value, say r0=1234 that identifies the cache-flush SMC at the tz_vmm side? Are you sure to do a flush of all entries of all non-secure ARM data-cache levels?

Cheers, Martin