tree e50f8edb9d792869da5050a6a01ce7743ca6af34
parent 4ac376a67b0be2a93a05f4fbf6e72ffab30c700f
author Mike Banon <mikebdp2@gmail.com> 1579459329 +0300
committer Patrick Georgi <pgeorgi@google.com> 1587563345 +0000

amd/agesa: Make BottomIo position configurable

Some PCI peripherals, such as discrete VGA adapters, require a great
amount of memory mapped IO. This patch allows the user to select at
build time the bottom IO to leave enough space for such devices.

We cannot calculate this value at runtime because it has to be set
before the PCI devices are enumerated. 0x80000000 has been successfully
boot-tested on A88XM-E (fam15tn), G505S (fam15tn) and AM1I-A (fam16kb).

Signed-off-by: Mike Banon <mikebdp2@gmail.com>
Change-Id: Ie235631231bcb4aeebaff2e0026da2ea9d82f9d0
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38472
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Michał Żygowski <michal.zygowski@3mdeb.com>