final merge of YhLu's stuff

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

src/devices/hypertransport.c

@@ -320,8 +320,8 @@ unsigned int hypertransport_scan_chain(struct bus *bus, unsigned int max)
 #if HAVE_HARD_RESET == 1
 	if(reset_needed) {
 		printk_info("HyperT reset needed\n");
-		hard_reset();
-	}
+// By LYH		hard_reset();
+	} else 
 	printk_debug("HyperT reset not needed\n");
 #endif
 	if (next_unitid > 0x1f) {

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");
 
 

src/northbridge/amd/amdk8/misc_control.c

@@ -10,6 +10,7 @@
 #include <device/pci_ops.h>
 #include "./cpu_rev.c"
 
+static cpu_reset_count = 0; //By LYH
 static void misc_control_init(struct device *dev)
 {
 	uint32_t cmd;
@@ -52,27 +53,20 @@ static void misc_control_init(struct device *dev)
 		cmd = 0x04e20707;
 		pci_write_config32(dev, 0xd4, cmd );
 	}
-
-/*
- * FIXME: This preprocessor check is a mere workaround. 
- * The right fix is to walk over all links on all nodes
- * and set the FIFO read pointer optimization value to
- * 0x25 for each link connected to an AMD HT device.
- *
- * The reason this is only enabled for machines with more 
- * than one CPU is that Athlon64 machines don't have the
- * link at all that is optimized in the code.
- */
-
-#if CONFIG_MAX_CPUS > 1	
+#if 1
+#if HAVE_HARD_RESET==1
+	cpu_reset_count++;  //by LYH
 	cmd = pci_read_config32(dev, 0xdc);
 	if((cmd & 0x0000ff00) != 0x02500) {
 		cmd &= 0xffff00ff;
 		cmd |= 0x00002500;
 		pci_write_config32(dev, 0xdc, cmd );
-		printk_debug("resetting cpu\n");
-		hard_reset();
-	}
+	        if(cpu_reset_count==CONFIG_MAX_CPUS) { //By LYH
+			printk_debug("resetting cpu\n");
+			hard_reset();
+		} //By LYH
+	} 
+#endif
 #endif	
 	printk_debug("done.\n");
 }

src/northbridge/amd/amdk8/northbridge.c

@@ -415,6 +415,13 @@ static void amdk8_set_resource(device_t dev, struct resource *resource, unsigned
 		limit |= rlimit & 0x01fff000;
 		limit |= (link & 3) << 4;
 		limit |= (nodeid & 3);
+		if (reg == 0xc8){
+			/* hack to set vga for test */
+			/* factory: b0: 03 0a 00 00 00 0b 00 00 */
+			f1_write_config32(0xb0, 0xa03);
+			f1_write_config32(0xb4, 0xb00);
+			base |= 0x30;
+		}
 		f1_write_config32(reg + 0x4, limit);
 		f1_write_config32(reg, base);
 	}
@@ -476,10 +483,45 @@ unsigned int amdk8_scan_root_bus(device_t root, unsigned int max)
 	return max;
 }
 
+void amdk8_enable_resources(struct device *dev)
+{
+  uint16_t ctrl;
+  unsigned link;
+  unsigned int vgalink = -1;
+
+  ctrl = pci_read_config16(dev, PCI_BRIDGE_CONTROL);
+  ctrl |= dev->link[0].bridge_ctrl;
+  printk_debug("%s bridge ctrl <- %04x\n", dev_path(dev), ctrl);
+  printk_err("%s bridge ctrl <- %04x\n", dev_path(dev), ctrl);
+  pci_write_config16(dev, PCI_BRIDGE_CONTROL, ctrl);
+
+#if 0
+  /* let's see what link VGA is on */
+  for(link = 0; link < dev->links; link++) {
+    device_t child;
+    printk_err("Kid %d of k8: bridge ctrl says: 0x%x\n", link, dev->link[link].bridge_ctrl);
+    if (dev->link[link].bridge_ctrl & PCI_BRIDGE_CTL_VGA)
+	vgalink = link;
+  }
+
+  if (vgalink != =1) {
+  /* now find the IOPAIR that goes to vgalink and set the  vga enable in the base part (0x30) */
+  /* now allocate an MMIOPAIR and point it to the CPU0, LINK=vgalink */
+  /* now set IORR1 so it has a hole for the 0xa0000-0xcffff region */
+  }
+#endif
+
+  pci_dev_enable_resources(dev);
+  //enable_childrens_resources(dev);
+}
+
+
+
 static struct device_operations northbridge_operations = {
 	.read_resources   = amdk8_read_resources,
 	.set_resources    = amdk8_set_resources,
-	.enable_resources = pci_dev_enable_resources,
+//	.enable_resources = pci_dev_enable_resources,
+        .enable_resources = amdk8_enable_resources,
 	.init             = 0,
 	.scan_bus         = amdk8_scan_chains,
 	.enable           = 0,
@@ -496,3 +538,4 @@ struct chip_control northbridge_amd_amdk8_control = {
 	.name   = "AMD K8 Northbridge",
 	.enumerate = enumerate,
 };
+