diff options
| author | Timothy Pearson <tpearson@raptorengineeringinc.com> | 2015-09-07 03:39:15 -0500 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2015-12-01 16:32:25 +0100 |
| commit | 93107bebf6bc4b550bd3a98e466dfe18389659b6 (patch) | |
| tree | 043c04ca6d4a71738864b4b7d6e38e140cba1f56 /src/northbridge/amd | |
| parent | f1436e58d292bcfd389ac786e83bb93ea6e0a086 (diff) | |
nb/amd/amdfam10: Fix incorrect channel buffer count configuration
The secondary bus number set code incorrectly overwrote the link
buffer settings in F0x[F4,D4,B4,94]. Constrain the secondary
bus number set to the appropriate bits of the registers.
Change-Id: If70825449f298aa66f7f8b76dbd7367455a6deb1
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: https://review.coreboot.org/12068
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
Diffstat (limited to 'src/northbridge/amd')
| -rw-r--r-- | src/northbridge/amd/amdfam10/northbridge.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/src/northbridge/amd/amdfam10/northbridge.c b/src/northbridge/amd/amdfam10/northbridge.c index 85cee138ef..c8bf8fab52 100644 --- a/src/northbridge/amd/amdfam10/northbridge.c +++ b/src/northbridge/amd/amdfam10/northbridge.c @@ -184,17 +184,14 @@ static void ht_route_link(struct bus *link, scan_state mode) * not correctly configured */ busses = pci_read_config32(link->dev, link->cap + 0x14); - busses &= 0xff000000; + busses &= ~(0xff << 8); busses |= parent->secondary & 0xff; - if (mode == HT_ROUTE_CLOSE) { - busses |= 0xfeff << 8; - } else if (mode == HT_ROUTE_SCAN) { + if (mode == HT_ROUTE_CLOSE) + busses |= 0xff << 8; + else if (mode == HT_ROUTE_SCAN) busses |= ((u32) link->secondary & 0xff) << 8; - busses |= 0xfc << 16; - } else if (mode == HT_ROUTE_FINAL) { + else if (mode == HT_ROUTE_FINAL) busses |= ((u32) link->secondary & 0xff) << 8; - busses |= ((u32) link->subordinate & 0xff) << 16; - } pci_write_config32(link->dev, link->cap + 0x14, busses); if (mode == HT_ROUTE_FINAL) { |