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Sent from my iPad
On Sep 16, 2011, at 3:19 AM, erik quanstrom <quans...@quanstro.net> wrote:
> well, after a bit of a time resembling /sys/src/cmd/aux/vga/adventure
> i currently have my atom box running nix. unfortunately, only one
> core is recognized. but i'll just have to leave one or two things till
> tomorrow.
>
> here are a list of a few things i tripped on
>
> 1. unfortunately, ppxeload isn't ready to load a .gz. i added a bit of
> code to at least not jump unconditionally to an x86 binary, but that's
> just not enough. need to revisit this.
>
> 2. ppxeload accepts only the old-and-wierd serial baud setting and
> not the kernel-standard, e.g. "0 b115200". i did fix this.
>
> 3. the 8169 driver wasn't working. i just dropped the one from 9load
> on top. inelegant, but effective.
>
> (i did have a 82563 chip going for a while that wasn't recognized. also
> needed to drop in a new driver for this, but since then the hardware has
> died.)
>
> 4. panic on memory init. this was caused because the only page color was
> 6, thus when starting in the array of page colors at 0, you won't find any.
> . i worked around this with this bit of code.
>
> ; diffy -c physalloc.c
> /n/dump/2011/0915/sys/src/nix/k10/physalloc.c:236,242 - physalloc.c:236,244
> uintmem m;
>
> DBG("physalloc\n");
> - assert(b->size > 0);
> + if(b->size == 0)
> + return 0;
> + // assert(b->size > 0);
>
> avail = b->avail;
> blocks = b->blocks;
>
> i need to go back and investigate if this is a problem with memory recognition
> or what.
>
> 5. needed to update 8169 and 82563 in the kernel.
>
> 6. had an old version of 6l that expected to make 4k pages. by the way,
> (won't we pay a heavy price for forking and/or execing small programs
> with 2mb pages? this means that each fork/exec is going to be at least
> 6mb worth of messing around.)
>
> it looks like my processors aren't recognized, and i'm pretty sure that the
> atom supports 1gb pages, but they aren't recognized either.
>
> - erik
>
