Hi Christian and Norman Thanks for the quick responses. So do you think it's fair to say that realistically 4MB is a probably the smallest you could do anything useful with. I know useful is hard to define.
Daniel On Jan 29, 2014 5:02 AM, "Christian Helmuth" < christian.helmuth@...1...> wrote:
Hello,
On Wed, Jan 29, 2014 at 12:35:55PM +0100, Norman Feske wrote:
Apparently, setting RAM0_SIZE to 0x240000 (ca. 2.3 MiB) is enough to run core + init + test-printf on PBX-A9 via base-hw.
I did a quick check for foc_pbxa9 with the attached patch. The smallest working amount of RAM was 0x135000 (ca. 1.2 MiB), but this is without the RAM used by the Fiasco kernel in the scenario. From the Fiasco kernel debugger I got "Used 2445KB out of 16384KB of Kmem" with the command 'km'.
Additionally, we have to add the amount of RAM used by ROM modules (currently loaded to RAM by the bootloader), which sums up to ca. 2.3 MiB on foc_pbxa9.
Regards
Christian Helmuth Genode Labs
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