redboot based boot loader for kernels?

[M. Warner Losh]

In message: <45E5A73E.20503 at errno.com>
            Sam Leffler <sam at errno.com> writes:
: John Hay wrote:
: > Hi,
: > 
: > Does anyone have or is busy with an app that one can load in the
: > redboot flash, that will load the kernel from the active partition
: > of a compact flash? I know one can load the kernel in the redboot
: > flash, but that makes remote upgrading more difficult. The way I
: > have done with our wrap and soekris boards, is to create 2 slices
: > on the CF. When upgrading, you just format and install on the
: > non-active slice, change the active bit and reboot.
: 
: A certain someone promised to add read/write support for the flash.

That would be me...  My day job has been crazy and my new son isn't
yet sleeping through the night.

: When that happens another option is to write the new kernel to flash
: before rebooting.  Otherwise we need a redboot image that grok's ufs or
: a secondary bootstrap that can be written to flash that knows how to
: boot from cf (I recall the latter might be in the obsd thecus work).

The at91 boot2 groks ufs and only needs a function that can read the
sectors from the underlying media to grok new media.  Of course, it
inherited most of that from the i386 boot2.

Warner