On Mon, Sep 01, 2003 at 05:29:09PM -0600, Scott Long wrote:
At one time I was working on patches to the loader to make the console speed configurable. At the time, at least, I didn't see any evidence that the settings were stored in the boot0 block, but maybe I was wrong.
AFAIK, the boot0 block uses bios int 0x16 to get a key-press and bios int 0x10 to display a character, so in a situation where you *want* a serial console, the F1 etc stuff can't be used unless the bios supports console re-direction. And you have to live with whatever baud rate the bios sets.
Once you get to boot2, then the serial console can work if set in /boot.config.
It would be nice to have a boot.config setting for the baud rate. I have a board here that allows bios re-direction to either the first or second serial port at a fixed baud rate of 38400. I have to build boot2 with BOOT_COMCONSOLE_SPEED=38400, and then the kernel with CONSPEED=38400 to get all the ducks in a row.
But it would be even nicer if both boot2 and the kernel would just work with whatever baud rate the bios set.
This is exactly the problem that I was working on.
Scott
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