eric patch

        1. x86_setup_mtrr take address bit.
        2. generic ht, pcix, pcie beidge...
        3. scan bus and reset_bus
        4. ht read ctrl to decide if the ht chain
           is ready
        5. Intel e7520 and e7525 support
        6. new ich5r support
        7. intel sb 6300 support.

yhlu patch
	1. split x86_setup_mtrrs to fixed and var
	2. if (resource->flags & IORESOURCE_FIXED ) return; in device.c pick_largest_resource
	3. in_conherent.c K8_SCAN_PCI_BUS


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1982 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 38 insertions, 7 deletions

diff --git a/src/mainboard/tyan/s2850/auto.c b/src/mainboard/tyan/s2850/auto.c
index 9220738d87..0b9012aca8 100644
--- a/src/mainboard/tyan/s2850/auto.c
+++ b/src/mainboard/tyan/s2850/auto.c
@@ -25,21 +25,52 @@
 #include "cpu/x86/bist.h"
 
 #define SERIAL_DEV PNP_DEV(0x2e, W83627HF_SP1)
+/* Look up a which bus a given node/link combination is on.
+ * return 0 when we can't find the answer.
+ */
+static unsigned node_link_to_bus(unsigned node, unsigned link)
+{
+        unsigned reg;
+        
+        for(reg = 0xE0; reg < 0xF0; reg += 0x04) {
+                unsigned config_map;
+                config_map = pci_read_config32(PCI_DEV(0, 0x18, 1), reg);
+                if ((config_map & 3) != 3) {
+                        continue; 
+                }       
+                if ((((config_map >> 4) & 7) == node) &&
+                        (((config_map >> 8) & 3) == link))
+                {       
+                        return (config_map >> 16) & 0xff;
+                }       
+        }       
+        return 0;
+}       
 
 static void hard_reset(void)
 {
-	set_bios_reset();
+        device_t dev;
+
+        /* Find the device */
+        dev = PCI_DEV(node_link_to_bus(0, 0), 0x04, 3);
+
+        set_bios_reset();
 
-	/* enable cf9 */
-	pci_write_config8(PCI_DEV(0, 0x02, 3), 0x41, 0xf1);
-	/* reset */
-	outb(0x0e, 0x0cf9);
+        /* enable cf9 */
+        pci_write_config8(dev, 0x41, 0xf1);
+        /* reset */
+        outb(0x0e, 0x0cf9);
 }
 
 static void soft_reset(void)
 {
-	set_bios_reset();
-	pci_write_config8(PCI_DEV(0, 0x02, 0), 0x47, 1);
+        device_t dev;
+
+        /* Find the device */
+        dev = PCI_DEV(node_link_to_bus(0, 0), 0x04, 0);
+
+        set_bios_reset();
+        pci_write_config8(dev, 0x47, 1);
 }
 
 #define REV_B_RESET 0