On Sat, Jul 31, 1999 at 08:44:18PM -0700, AurobindoTripathy wrote:
> Can the real-time kernel, which I assume "boots" first in a few
> milliseconds, initialize the card and devote a few cpu cycles to it (oops,
The RT kernel tries to get Linux to do as much work as possible and
this includes device initialization, which is a horrible pain on
many machines. So RTL only takes over _after_ Linux has already figured
out the PCI bus, setup memory, started the other processors if any, ...
It does start before "init" is run, so it skips a great deal of Linux
software setup. If you have a fast hardware/bios init sequence, and a simple
PCI/motherboard setup for Linux to handle, you could be in RTL soon.
In that case, you still have the problem of getting RTL to do something
before you get Linux to a point where it can load modules. You could hack
the rtl_init function to setup a builtin simple irq or timer handler, I
suppose.
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