diff options
| author | Timothy Pearson <tpearson@raptorengineeringinc.com> | 2015-01-23 20:20:56 -0600 |
|---|---|---|
| committer | Alexandru Gagniuc <mr.nuke.me@gmail.com> | 2015-01-28 22:11:48 +0100 |
| commit | a6f669e183e1a5bac244118d9196d926c040c8db (patch) | |
| tree | 0d57c338753404deb389ea05b4fdf7cb461d4552 | |
| parent | 7f3ae39640adabbd2288fdeff20b04c55a3a3e9f (diff) | |
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@raptorengineeringinc.com>
Reviewed-on: http://review.coreboot.org/8261
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Tested-by: build bot (Jenkins)
| -rw-r--r-- | src/northbridge/amd/amdfam10/northbridge.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/northbridge/amd/amdfam10/northbridge.c b/src/northbridge/amd/amdfam10/northbridge.c index 51cfee7186..84f255378e 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 } |