24 Dec
2011
24 Dec
'11
10:29 a.m.
Hi,
On Thu Dec 22, 2011 at 14:40:42 +0300, e.fedotov wrote:
This post is about how to eliminate memory restriction 256MB in realview-pbxa9 platform (ARM Cortex A9 processor). The problem is that L4 bootstrap doesn't scan all RAM memory presented on this board. In QEMU source code for this platform (see hw/realview.c in QEMU source directory, function: realview_init) we can find that it can be 3 memory intervals in pbx a9:
The first 512MB are at 0x70000000, at 0 there's just an alias of the first 256MB of that memory. So what can be done is this in the build-dir: $ make switch_ram_base RAM_BASE=0x70000000 Which will change the ram-base to 0x70000000 and make 512MB available.
Adam
--
Adam adam@os.inf.tu-dresden.de
Lackorzynski http://os.inf.tu-dresden.de/~adam/