[commit] r5908 - in trunk/src/cpu: amd/car intel/car intel/model_106cx intel/model_6ex intel/model_6fx via/car

[repository service]

Author: uwe
Date: Sat Oct  2 22:51:29 2010
New Revision: 5908
URL: https://tracker.coreboot.org/trac/coreboot/changeset/5908

Log:
Add comments to make it clear why these two lines are written like that:

movl    $REAL_XIP_ROM_BASE, %eax
  orl     $MTRR_TYPE_WRBACK, %eax

Signed-off-by: Uwe Hermann 
Acked-by: Uwe Hermann

Modified:
   trunk/src/cpu/amd/car/cache_as_ram.inc
   trunk/src/cpu/intel/car/cache_as_ram.inc
   trunk/src/cpu/intel/model_106cx/cache_as_ram.inc
   trunk/src/cpu/intel/model_6ex/cache_as_ram.inc
   trunk/src/cpu/intel/model_6fx/cache_as_ram.inc
   trunk/src/cpu/via/car/cache_as_ram.inc

Modified: trunk/src/cpu/amd/car/cache_as_ram.inc
==============================================================================
--- trunk/src/cpu/amd/car/cache_as_ram.inc	Sat Oct  2 22:36:26 2010	(r5907)
+++ trunk/src/cpu/amd/car/cache_as_ram.inc	Sat Oct  2 22:51:29 2010	(r5908)
@@ -269,6 +269,11 @@
     */
    movl	$MTRRphysBase_MSR(1), %ecx
    xorl	%edx, %edx
+	/*
+	 * IMPORTANT: The two lines below can _not_ be written like this:
+	 *   movl $(REAL_XIP_ROM_BASE | MTRR_TYPE_WRBACK), %eax
+	 * http://www.coreboot.org/pipermail/coreboot/2010-October/060855.html
+	 */
    movl	$REAL_XIP_ROM_BASE, %eax
    orl	$MTRR_TYPE_WRBACK, %eax
    wrmsr

Modified: trunk/src/cpu/intel/car/cache_as_ram.inc
==============================================================================
--- trunk/src/cpu/intel/car/cache_as_ram.inc	Sat Oct  2 22:36:26 2010	(r5907)
+++ trunk/src/cpu/intel/car/cache_as_ram.inc	Sat Oct  2 22:51:29 2010	(r5908)
@@ -221,6 +221,11 @@
     */
    movl	$MTRRphysBase_MSR(1), %ecx
    xorl	%edx, %edx
+	/*
+	 * IMPORTANT: The two lines below can _not_ be written like this:
+	 *   movl $(REAL_XIP_ROM_BASE | MTRR_TYPE_WRBACK), %eax
+	 * http://www.coreboot.org/pipermail/coreboot/2010-October/060855.html
+	 */
    movl	$REAL_XIP_ROM_BASE, %eax
    orl	$MTRR_TYPE_WRBACK, %eax
    wrmsr

Modified: trunk/src/cpu/intel/model_106cx/cache_as_ram.inc
==============================================================================
--- trunk/src/cpu/intel/model_106cx/cache_as_ram.inc	Sat Oct  2 22:36:26 2010	(r5907)
+++ trunk/src/cpu/intel/model_106cx/cache_as_ram.inc	Sat Oct  2 22:51:29 2010	(r5908)
@@ -97,6 +97,11 @@
 #else
 #define REAL_XIP_ROM_BASE CONFIG_XIP_ROM_BASE
 #endif
+	/*
+	 * IMPORTANT: The two lines below can _not_ be written like this:
+	 *   movl $(REAL_XIP_ROM_BASE | MTRR_TYPE_WRBACK), %eax
+	 * http://www.coreboot.org/pipermail/coreboot/2010-October/060855.html
+	 */
    movl	$REAL_XIP_ROM_BASE, %eax
    orl	$MTRR_TYPE_WRBACK, %eax
    wrmsr

Modified: trunk/src/cpu/intel/model_6ex/cache_as_ram.inc
==============================================================================
--- trunk/src/cpu/intel/model_6ex/cache_as_ram.inc	Sat Oct  2 22:36:26 2010	(r5907)
+++ trunk/src/cpu/intel/model_6ex/cache_as_ram.inc	Sat Oct  2 22:51:29 2010	(r5908)
@@ -97,6 +97,11 @@
 #else
 #define REAL_XIP_ROM_BASE CONFIG_XIP_ROM_BASE
 #endif
+	/*
+	 * IMPORTANT: The two lines below can _not_ be written like this:
+	 *   movl $(REAL_XIP_ROM_BASE | MTRR_TYPE_WRBACK), %eax
+	 * http://www.coreboot.org/pipermail/coreboot/2010-October/060855.html
+	 */
    movl	$REAL_XIP_ROM_BASE, %eax
    orl	$MTRR_TYPE_WRBACK, %eax
    wrmsr

Modified: trunk/src/cpu/intel/model_6fx/cache_as_ram.inc
==============================================================================
--- trunk/src/cpu/intel/model_6fx/cache_as_ram.inc	Sat Oct  2 22:36:26 2010	(r5907)
+++ trunk/src/cpu/intel/model_6fx/cache_as_ram.inc	Sat Oct  2 22:51:29 2010	(r5908)
@@ -104,6 +104,11 @@
 #else
 #define REAL_XIP_ROM_BASE CONFIG_XIP_ROM_BASE
 #endif
+	/*
+	 * IMPORTANT: The two lines below can _not_ be written like this:
+	 *   movl $(REAL_XIP_ROM_BASE | MTRR_TYPE_WRBACK), %eax
+	 * http://www.coreboot.org/pipermail/coreboot/2010-October/060855.html
+	 */
    movl	$REAL_XIP_ROM_BASE, %eax
    orl	$MTRR_TYPE_WRBACK, %eax
    wrmsr

Modified: trunk/src/cpu/via/car/cache_as_ram.inc
==============================================================================
--- trunk/src/cpu/via/car/cache_as_ram.inc	Sat Oct  2 22:36:26 2010	(r5907)
+++ trunk/src/cpu/via/car/cache_as_ram.inc	Sat Oct  2 22:51:29 2010	(r5908)
@@ -97,6 +97,11 @@
     */
    movl	$MTRRphysBase_MSR(1), %ecx
    xorl	%edx, %edx
+	/*
+	 * IMPORTANT: The two lines below can _not_ be written like this:
+	 *   movl $(REAL_XIP_ROM_BASE | MTRR_TYPE_WRBACK), %eax
+	 * http://www.coreboot.org/pipermail/coreboot/2010-October/060855.html
+	 */
    movl	$REAL_XIP_ROM_BASE, %eax
    orl	$MTRR_TYPE_WRBACK, %eax
    wrmsr