Booting Linux from Flash
brendan at dgs.monash.edu.au
Thu Apr 15 14:33:57 EST 1999
I would certainly like to get a flash filesystem driver. I'm not sure if it
is the same thing you are talking about.
I want to boot linux on an powerpc embedded system which has no hard disk. I
do not want to use lilo. I imagine that I would have write a simple
bootloader to get the kernel booting. I want to store the kernel at a known
location in Flash and store a boot image at a known location in Flash. I then
want to execute the kernel somehow (jump to appropriate address) and pass to
it any parameters required to let it place the boot image in a ram disk. I
think the kernel lives in the file system so it's a bit of a chicken and egg
problem as far as I can see. Is the kernel that is booting stored in the boot
image. If so I guess the boot image has to be uncompressed. The root
filesystem can be a compressed image though.
Anyone know where I should start with regards to bootloaders or how to get the
kernel booting if I have the kernel and bootimage in Flash somewhere. Note
the Flash is just memory mapped on a SIMM. There is no IDE driver or
filesystem on it. Do I need a Flash device driver ??
John VanLoon wrote:
> I have a driver for a card from advantech. I do not believe that much would
> have to be done to have it usable on a FLASH BOOT BLOCK device. You would
> just need to fill in the details and perhaps add support for multiple
> partitions if you need it (an offset to the beginning is already supported
> allowing booting from compressed image ...) and modify lilo. Let me know if
> you would like such a thing.
> John van Loon
> john.vanloon at oregonchain.com
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