optimize read link bug fixed.

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1836 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

diff --git a/src/northbridge/amd/amdk8/misc_control.c b/src/northbridge/amd/amdk8/misc_control.c
index e5e8f4c78faa7a28419cb0423cb3820fda0360c7..379d8b1dc42154f7d6355295654d8f4fa220c88c 100644 (file)
--- a/src/northbridge/amd/amdk8/misc_control.c
+++ b/src/northbridge/amd/amdk8/misc_control.c
@@ -187,8 +187,8 @@ static void misc_control_init(struct device *dev)
                        /* This works on an Athlon64 because unimplemented links return 0 */
                        reg = 0x98 + (link * 0x20);
                        link_type = pci_read_config32(f0_dev, reg);
-                       if (link_type & LinkConnected) {
-                               cmd &= 0xff << (link *8);
+                       if ((link_type & 7) == 3) { /* only handle coherent link here please */
+                               cmd &= ~(0xff << (link *8));
                                /* FIXME this assumes the device on the other side is an AMD device */
                                cmd |= 0x25 << (link *8);
                        }