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by gwoodward
Wed Sep 26, 2012 8:03 pm
Forum: Linux Kernel
Topic: root filesystem
Replies: 8
Views: 1961

Re: root filesystem

Config.txt only referes to kernel.img (any old .img files have been renamed). I created kernel.img and file system from netzical on github and booted. Pulled power, built image from raspberries/linux and overwrote kernel.img with arch/arm/boot/image but it still boots the first (I know from the boot...
by gwoodward
Wed Sep 26, 2012 7:42 pm
Forum: Linux Kernel
Topic: root filesystem
Replies: 8
Views: 1961

Re: root filesystem

I'm doing this without actually booting I.e. Mounting my dd card fat32 partition and replacing kernel.img with image from arch/arm/boot
by gwoodward
Wed Sep 26, 2012 7:17 pm
Forum: Linux Kernel
Topic: root filesystem
Replies: 8
Views: 1961

Re: root filesystem

No I'm thinking the kernel is the kernel. If I've got a filesystem, then can I just use that with any kernel.img file I build?
by gwoodward
Wed Sep 26, 2012 3:47 pm
Forum: Linux Kernel
Topic: root filesystem
Replies: 8
Views: 1961

Re: root filesystem

Maybe I'm doing something wrong then. I build a root fs (from nezticle on github) and used his kernel.img file and all find. I then build raspberrypi/linux (off github) and cp arch/arm/boot/zImage over kernel.img but it still boots the image from nezticle.

Cheers,
G
by gwoodward
Tue Sep 25, 2012 7:11 pm
Forum: Linux Kernel
Topic: root filesystem
Replies: 8
Views: 1961

root filesystem

Hi, If I dd the standard linux image for pi onto my sd card I end up with 2 partitions, 1 with the loader/bootcode/kernel.img etc files and a 2nd with a filesystem on (/, /usr, /proc etc). Is that filesystem compatible with any other kernel I proceed to build? (archlinux? github/raspberrypi/linux?)....
by gwoodward
Sat Sep 22, 2012 8:12 pm
Forum: Other
Topic: Smallest OS to dissect
Replies: 14
Views: 8291

Re: Smallest OS to dissect

Why can't it just load and run from 0x0? Why in the first place load to 0x0 but jump to 0x8000? Why now load to 0x8000 and run from there?

I assume the kernels had to change to remove the jump instruction?

Cheers,
G
by gwoodward
Sat Sep 22, 2012 2:40 pm
Forum: Media centres
Topic: my simple idea
Replies: 4
Views: 1326

Re: my simple idea

Do I not need a bluetooth receiver or can it be done over tcp/ip? I'd prefer to use bluetooth as I've never done anything with bluetooth before and this would be something useful.

Cheers,
G
by gwoodward
Sat Sep 22, 2012 2:36 pm
Forum: Other
Topic: Smallest OS to dissect
Replies: 14
Views: 8291

Re: Smallest OS to dissect

Thanks Dex, that's just what I was after. Why have those things changed that you mentioned?
by gwoodward
Sat Sep 22, 2012 1:37 pm
Forum: Media centres
Topic: my simple idea
Replies: 4
Views: 1326

Re: my simple idea

Yeah as I said I realise I'm reinventing the wheel but I'd rather do that. I doubt the parts will cost me much.
by gwoodward
Fri Sep 21, 2012 8:39 pm
Forum: Media centres
Topic: my simple idea
Replies: 4
Views: 1326

my simple idea

Hi, My simple idea is to install a very minimal os (debian, arch, openelec)? With bluetooth and connect it to my hdmi tv in bedroom. I'd use smartphone app to control mouse to access catch up tv. Anyone got any thoughts? I realise I'm probably reinventing the wheel but only way to learn sometimes. W...
by gwoodward
Fri Sep 21, 2012 1:42 pm
Forum: Other
Topic: Smallest OS to dissect
Replies: 14
Views: 8291

Re: Smallest OS to dissect

Hi,

For now ARM, and C/C++ (some inline assembler/.s files) is fine :)

I guess I'd kind of like to strip the OS down and start to build my own minimal version for the RPi and add more modules as I go (and need them)

Cheers,
G
by gwoodward
Thu Sep 20, 2012 6:21 pm
Forum: Other
Topic: Smallest OS to dissect
Replies: 14
Views: 8291

Smallest OS to dissect

Hi,

What would be the smallest OS in terms of files/code size to start playing with? I want to take an OS and dissect it, understand it, extend it etc etc.

I contemplated with the idea of starting from scratch.

Thanks for any info.

G
by gwoodward
Wed Sep 19, 2012 3:49 pm
Forum: Other
Topic: has anyone ported Plan 9 or Inferno to RasPi?
Replies: 14
Views: 5608

Re: has anyone ported Plan 9 or Inferno to RasPi?

Hi,

How could I get involved with the port? I was thinking of attempting a port of Inferno.

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