[coreboot-gerrit] Patch set updated for coreboot: a24d397 amd/amdfam10: Allocate the lower DRAM region up to TOM
Timothy Pearson (tpearson@raptorengineeringinc.com)
gerrit at coreboot.org
Wed Jan 28 21:17:23 CET 2015
Timothy Pearson (tpearson at raptorengineeringinc.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/8261
-gerrit
commit a24d397efcb3267d92b3250586bb3bbb63c8b800
Author: Timothy Pearson <tpearson at raptorengineeringinc.com>
Date: Fri Jan 23 20:20:56 2015 -0600
amd/amdfam10: Allocate the lower DRAM region up to TOM
This fixes the resource allocator locating the PCI register
space below 0xe0000000 thereby causing corruption with more
than ~3.5GB physical RAM on AMD Family 10h systems.
Change-Id: I66d1bfa1e977a6b492c1909079087a801c7e6a3a
Signed-off-by: Timothy Pearson <tpearson at raptorengineeringinc.com>
---
src/northbridge/amd/amdfam10/northbridge.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/src/northbridge/amd/amdfam10/northbridge.c b/src/northbridge/amd/amdfam10/northbridge.c
index 51cfee7..84f2553 100644
--- a/src/northbridge/amd/amdfam10/northbridge.c
+++ b/src/northbridge/amd/amdfam10/northbridge.c
@@ -677,6 +677,9 @@ static void amdfam10_domain_read_resources(device_t dev)
res->size = CONFIG_MMCONF_BUS_NUMBER * 4096*256;
res->flags = IORESOURCE_MEM | IORESOURCE_RESERVE |
IORESOURCE_FIXED | IORESOURCE_STORED | IORESOURCE_ASSIGNED;
+
+ /* Reserve lower DRAM region to force PCI MMIO region to correct location above 0xefffffff */
+ ram_resource(dev, 7, 0, rdmsr(TOP_MEM).lo >> 10);
#endif
}
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