qemu/pc-bios/optionrom
Kevin Wolf 26a8ec0761 multiboot: Calculate upper_mem in the ROM
The upper_mem field of the Multiboot information struct doesn't really
contain the RAM size - 1 MB like we used to calculate it, but only the
memory from 1 MB up to the first (upper) memory hole.

In order to correctly retrieve this information, the multiboot ROM now
looks at the mmap it creates anyway and tries to find the size of
contiguous usable memory from 1 MB.

Drop the multiboot.c definition of lower_mem and upper_mem because both
are queried at runtime now.

Signed-off-by: Kevin Wolf <mail@kevin-wolf.de>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Message-id: 1372018066-21822-3-git-send-email-mail@kevin-wolf.de
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-06-28 14:01:52 -05:00
..
kvmvapic.S kvmvapic: Use optionrom helpers 2012-02-18 12:16:01 +02:00
linuxboot.S fix linuxboot.bin and multiboot.bin to not hijack int19 2011-03-22 07:00:58 +01:00
Makefile signrom: Rewrite as python script 2012-04-16 15:41:20 +02:00
multiboot.S multiboot: Calculate upper_mem in the ROM 2013-06-28 14:01:52 -05:00
optionrom.h hw: move headers to include/ 2013-04-08 18:13:10 +02:00