From c01fe5d1b674231546c070f035b0ab3c2d8ba3f5 Mon Sep 17 00:00:00 2001
From: "Ronald G. Minnich" <rminnich@gmail.com>
Date: Wed, 3 May 2006 03:30:23 +0000
Subject: more changes; rumba enet works fine now.

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2290 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
---
 src/mainboard/amd/rumba/chip.h            |  2 +-
 src/mainboard/amd/rumba/mainboard.c       | 31 +++++++++++++++++++++++++++++++
 src/mainboard/olpc/rev_a/Config.lb        |  1 +
 src/northbridge/amd/gx2/northbridgeinit.c | 28 +++++++++++++++++++---------
 4 files changed, 52 insertions(+), 10 deletions(-)

diff --git a/src/mainboard/amd/rumba/chip.h b/src/mainboard/amd/rumba/chip.h
index 90cfe88a93..40efbfa698 100644
--- a/src/mainboard/amd/rumba/chip.h
+++ b/src/mainboard/amd/rumba/chip.h
@@ -1,5 +1,5 @@
 extern struct chip_operations mainboard_amd_rumba_ops;
 
 struct mainboard_amd_rumba_config {
-	int nothing;
+	int nicirq;
 };
diff --git a/src/mainboard/amd/rumba/mainboard.c b/src/mainboard/amd/rumba/mainboard.c
index 133d38fd30..614b87154c 100644
--- a/src/mainboard/amd/rumba/mainboard.c
+++ b/src/mainboard/amd/rumba/mainboard.c
@@ -6,7 +6,38 @@
 #include <arch/io.h>
 #include "chip.h"
 
+static void init(struct device *dev) {
+	struct mainboard_amd_rumba_config  *mainboard = (struct mainboard_amd_rumba_config*)dev->chip_info;
+	device_t nic = NULL;
+	unsigned bus = 0;
+	unsigned devfn = PCI_DEVFN(0xd, 0);
+	int nicirq = 1;
+
+	if (mainboard->nicirq)
+		nicirq = mainboard->nicirq;
+
+	printk_debug("AMD RUMBA ENTER %s\n", __FUNCTION__);
+
+	if (nicirq) {
+		printk_debug("%s (%x,%x)SET PCI interrupt line to %d\n", 
+			__FUNCTION__, bus, devfn, nicirq);
+		nic = dev_find_slot(bus, devfn);
+		if (! nic){
+			printk_err("Could not find NIC\n");
+		} else {
+			pci_write_config8(nic, PCI_INTERRUPT_LINE, nicirq);
+		}
+	}
+	printk_debug("AMD RUMBA EXIT %s\n", __FUNCTION__);
+}
+
+static void enable_dev(struct device *dev)
+{
+        dev->ops->init = init;
+}
+
 struct chip_operations mainboard_amd_rumba_ops = {
 	CHIP_NAME("AMD Rumba mainboard ")
+        .enable_dev = enable_dev,
 };
 
diff --git a/src/mainboard/olpc/rev_a/Config.lb b/src/mainboard/olpc/rev_a/Config.lb
index a7962f51d0..8c5d98388a 100644
--- a/src/mainboard/olpc/rev_a/Config.lb
+++ b/src/mainboard/olpc/rev_a/Config.lb
@@ -133,6 +133,7 @@ chip northbridge/amd/gx2
     		device pci 1.0 on end
 		device pci 1.1 on end
       		chip southbridge/amd/cs5536
+                        register "enable_gpio0_inta" = "1"
         		device pci d.0 on end	# Realtek 8139 LAN
         		device pci f.0 on end	# ISA Bridge
         		device pci f.2 on end	# IDE Controller
diff --git a/src/northbridge/amd/gx2/northbridgeinit.c b/src/northbridge/amd/gx2/northbridgeinit.c
index 0998a6af96..c89e4cb845 100644
--- a/src/northbridge/amd/gx2/northbridgeinit.c
+++ b/src/northbridge/amd/gx2/northbridgeinit.c
@@ -338,17 +338,27 @@ static void GLPCIInit(void){
 		}
 	}
 	if (gl) {
+		unsigned long pah, pal;
 		msrnum = gl->desc_name;
 		msr = rdmsr(msrnum);
-
-		/*  20 bit address The bottom 12 bits go into bits 20-31 in eax. The top 8 bits go into 0-7 of edx.*/
-		val = msr.hi & 0xff;		/*  EAX[31:20] = low 12 bits and EAX[7:0] upper 8 bits*/
-		val <<= 12;			/*  EAX[31:20] = junk EAX[19:0] = 20 bit address*/
-		val &= 0xfffff;
-		val <<=  GLPCI_RC_UPPER_TOP_SHIFT;
-		msr.hi =  val				/*  Top Set*/;
-		msr.lo =  (0x100000 >> 12) << GLPCI_RC_LOWER_BASE_SHIFT 	/* 1MB >> =20bit address then shift into register*/;
-		msr.lo |= GLPCI_RC_LOWER_EN_SET + GLPCI_RC_LOWER_PF_SET + GLPCI_RC_LOWER_WC_SET;
+		/* example R_SYSMEM value: 20:00:00:0f:fb:f0:01:00
+                 * translates to a base of 0x00100000 and top of 0xffbf0000
+                 * base of 1M and top of around 256M
+		 */
+		/* we have to create a page-aligned (4KB page) address for base and top */
+		/* So we need a high page aligned addresss (pah) and low page aligned address (pal)
+		 * pah is from msr.hi << 12 | msr.low >> 20. pal is msr.lo << 12
+		 */
+		printk_debug("GLPCI r1: system msr.lo 0x%x msr.hi 0x%x\n", msr.lo, msr.hi);
+		pah = ((msr.hi &0xff) << 12) | ((msr.lo >> 20) & 0xfff);
+		/* we have the page address. Now make it a page-aligned address */
+		pah <<= 12;
+
+		pal = msr.lo << 12;
+		msr.hi =  pah;
+		msr.lo =  pal;
+		msr.lo |= GLPCI_RC_LOWER_EN_SET | GLPCI_RC_LOWER_PF_SET | GLPCI_RC_LOWER_WC_SET;
+		printk_debug("GLPCI r1: system msr.lo 0x%x msr.hi 0x%x\n", msr.lo, msr.hi);
 		msrnum = GLPCI_RC1;
 		wrmsr(msrnum, msr);
 	}
-- 
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