final merge of YhLu's stuff

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1371 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 45 insertions, 0 deletions

diff --git a/src/northbridge/amd/amdk8/coherent_ht.c b/src/northbridge/amd/amdk8/coherent_ht.c
index 61880ec5f6..83e8404e94 100644
--- a/src/northbridge/amd/amdk8/coherent_ht.c
+++ b/src/northbridge/amd/amdk8/coherent_ht.c
@@ -100,6 +100,42 @@ static void disable_probes(void)
 	print_debug("done.\r\n");
 
 }
+//BY LYH
+#if 0
+#define WAIT_TIMES 1000
+static void wait_ap_stop(u8 node)
+{
+        unsigned long reg;
+        unsigned long i;
+        for(i=0;i<WAIT_TIMES;i++) {
+                unsigned long regx;
+                regx = pci_read_config32(NODE_HT(node),0x6c);
+                if((regx & (1<<4))==1) break;
+        }
+        reg = pci_read_config32(NODE_HT(node),0x6c);
+        reg &= ~(1<<4);  // clear it
+        pci_write_config32(NODE_HT(node), 0x6c, reg);
+
+}
+static void notify_bsp_ap_is_stopped(void)
+{
+        unsigned long reg;
+        unsigned long apic_id;
+        apic_id = *((volatile unsigned long *)(APIC_DEFAULT_BASE+APIC_ID));
+        apic_id >>= 24;
+/*      print_debug("applicaton cpu apic_id: ");
+        print_debug_hex32(apic_id);
+        }*/
+        if(apic_id!=0) { //AP  apic_id == node_id ??
+//              set the ColdResetbit to notify BSP that AP is stopped
+                reg = pci_read_config32(NODE_HT(apic_id), 0x6C);
+                reg |= 1<<4;
+                pci_write_config32(NODE_HT(apic_id),  0x6C, reg);
+        }
+
+}
+#endif
+//BY LYH END
 
 static void enable_routing(u8 node)
 {
@@ -152,6 +188,15 @@ static void rename_temp_node(u8 node)
         val |= node;   /* new node        */
 	pci_write_config32(NODE_HT(7), 0x60, val);
 
+//BY LYH
+#if 0
+        if(node!=0) {
+                wait_ap_stop(node);
+        }
+#endif
+//BY LYH END
+
+
 	print_debug(" done.\r\n");