[PATCH][v3] read actual memory size in qemu-i386 - coreboot

29 Jun 2008

Hi,
attached is an update to my patch from 2008-06-05. The only change so 
far was a clean up in copyright statements, the other two pending issues 
were:
1. What to do with doc/design/newboot.lyx, which refers to a value I 
delete (ramsize), but which I can't edit without lyx (on win32)
2. Where to put inb_cmos, which so far is only used in nvramtool, a 
userspace app.
Regards,
Patrick Georgi
Signed-Off-By: Patrick Georgi patrick@georgi-clan.de
Index: northbridge/intel/i440bxemulation/domain
===================================================================

--- northbridge/intel/i440bxemulation/domain	(revision 690)
+++ northbridge/intel/i440bxemulation/domain	(working copy)
@@ -19,6 +19,5 @@
  */
{
-	ramsize = "128";
    device_operations = "i440bx_domain";
 };
Index: northbridge/intel/i440bxemulation/i440bx.c
===================================================================
--- northbridge/intel/i440bxemulation/i440bx.c	(revision 690)
+++ northbridge/intel/i440bxemulation/i440bx.c	(working copy)
@@ -3,6 +3,7 @@
  *
  * Copyright (C) 2000 Ron Minnich, Advanced Computing Lab, LANL
  * Copyright (C) 2007 Ronald G. Minnich rminnich@gmail.com
+ * Copyright (C) 2008 Patrick Georgi patrick@georgi-clan.de
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -43,19 +44,30 @@
 #include <device/device.h>
 #include <device/pci.h>
 #include <string.h>
+#include <io.h>
 #include "i440bx.h"
 #include "statictree.h"
/* Here are the ops for 440BX as a PCI domain. */
+static int inb_cmos(int port)
+{
+	outb(port, 0x70);
+	return inb(0x71);
+}
+
 static void pci_domain_set_resources(struct device *dev)
 {
    struct device *mc_dev;
    u32 tolmk;		/* Top of low mem, Kbytes. */
    int idx;
-	struct northbridge_intel_i440bxemulation_domain_config *device_configuration =
-	    dev->device_configuration;
-	tolmk = device_configuration->ramsize * 1024;
+	/* read large mem memory descriptor
+	   for <16 MB read the more detailed small mem descriptor
+	   all values in kbytes */
+	tolmk = ((inb_cmos(0x35)<<8) |inb_cmos(0x34)) * 64;
+	if (tolmk <= 16 * 1024) {
+		tolmk = (inb_cmos(0x31)<<8) |inb_cmos(0x30);
+	}
    mc_dev = dev->link[0].children;
    if (mc_dev) {
    	idx = 10;

    