[coreboot] Coreboot and INT13H

Patrick Georgi pgeorgi at google.com
Wed Jul 19 23:35:54 CEST 2017


2017-07-19 23:24 GMT+02:00 ingegneriaforense at alice.it <
ingegneriaforense at alice.it>:

> 1- where (the name of the file) the INT 13H is implemented in the coreboot
> source code ?
>
It's not. coreboot doesn't provide BIOS services. For those, see seabios (
www.seabios.org)


> 2- if the INT 13H interrupt, when invoked by OS (or application programs),
> can do writing operations in the filesystem of the drive attached to the PC
> or only limits  to writing operations in memory regions different by the
> filesystem ?
>
Not applicable

3- Is a way to see on the screen the fully sequence of operations coreboot
> execute during the boot ? (i don't use QUEMU but program directly the bios
> eeprom chip).

coreboot boots too fast for any meaningful screen output so we dropped
support for that years ago.
There's a log in memory (cbmem -c) or on serial, if configured.


Patrick
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