[coreboot-gerrit] Change in coreboot[master]: [TESTME]msi/ms7721: fix the VGA-related PCI resource allocation problems

[Mike Banon (Code Review)]

Mike Banon has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/38216 )

Change subject: [TESTME]msi/ms7721: fix the VGA-related PCI resource allocation problems
......................................................................

[TESTME]msi/ms7721: fix the VGA-related PCI resource allocation problems

This workaround helps to avoid the PCI resource allocation problems which happen
if a discrete VGA adapter (i.e. AMD HD6670) has been plugged in to MS7721 board.
It does not bring any downsides if there is no discrete VGA adapter.

Signed-off-by: Mike Banon 
Change-Id: I97f224772710d561808c7cf0f412caea4bd6b560
---
M src/mainboard/msi/ms7721/OemCustomize.c
1 file changed, 2 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/16/38216/1

diff --git a/src/mainboard/msi/ms7721/OemCustomize.c b/src/mainboard/msi/ms7721/OemCustomize.c
index 4782e11..8baa686 100644
--- a/src/mainboard/msi/ms7721/OemCustomize.c
+++ b/src/mainboard/msi/ms7721/OemCustomize.c
@@ -187,6 +187,8 @@

void board_BeforeInitPost(struct sysinfo *cb, AMD_POST_PARAMS *InitPost)
 {
+	/* Set to 0xD0 instead of 0xE0 to avoid the PCI resource allocation problems. */
+	InitPost->MemConfig.BottomIo = 0xD0;
    InitPost->MemConfig.PlatformMemoryConfiguration = (PSO_ENTRY *)PlatformMemoryTable;
 }