How do i specify XIP in uClinux?
I am compiling the linking the application using the following options:
CFLAGS= -D_GNU_SOURCE -DDEBUG -fpic
LDFLAGS= -Wl,-elf2flt -m5370 -msep-data -lpthread -lstdc++ -lc -lgcc
I have to increase the RAMFS size of 1024 as the application size is
itself 793780 bytes. Even with only "Allow allocating large blocks (>
1MB) of memory" and the stack size 4K, i am unable to execute the
application.
Gavin Lambert wrote:
Quoth Praveen Chandrasekharaiah <>:
I am trying to solve this "page allocation failure. order:8,
mode:0x40d0" error but some how all the suggested solutions don't
seem to work.
I am using 2.6.16 uClinux on M5272C3. I selected Allow allocating
large blocks (> 1MB) of memory and increased the RAMFS size to 1024K
and also increased the stack size for 4k to 20K. The size of the
application itself is 793780 bytes. The board has a ROM and RAM of 5
Meg each.
Are you using XIP and running from ROM or is the kernel and ROMFS
running from RAM?
With an all-in-RAM setup and 8MB of RAM, I found there was only ~5MB
free on initial boot, and about ~2MB free once it reached the shell.
Unless you've got a very constrained system that means once you've
loaded a 1MB app there's precious little room to move around in
afterwards.
(Incidentally, those steps you describe [apart from the first] would
actually make the problem *worse* for an all-in-RAM setup.)
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