Re-declare CACHE_ROM_SIZE as aligned ROM_SIZE for MTRR

This change allows Kconfig options ROM_SIZE and CBFS_SIZE to be
set with values that are not power of 2. The region programmed
as WB cacheable will include all of ROM_SIZE.

Side-effects to consider:

Memory region below flash may be tagged WRPROT cacheable. As an
example, with ROM_SIZE of 12 MB, CACHE_ROM_SIZE would be 16 MB.
Since this can overlap CAR, we add an explicit test and fail
on compile should this happen. To work around this problem, one
needs to use CACHE_ROM_SIZE_OVERRIDE in the mainboard Kconfig and
define a smaller region for WB cache.

With this change flash regions outside CBFS are also tagged WRPROT
cacheable. This covers IFD and ME and sections ChromeOS may use.

Change-Id: I5e577900ff7e91606bef6d80033caaed721ce4bf
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/4625
Tested-by: build bot (Jenkins)
Reviewed-by: Vladimir Serbinenko <phcoder@gmail.com>
diff --git a/src/Kconfig b/src/Kconfig
index 88df9ae..bed6c7f 100644
--- a/src/Kconfig
+++ b/src/Kconfig
@@ -385,9 +385,9 @@
 	hex
 	default ROM_SIZE
 
-config CACHE_ROM_SIZE
+config CACHE_ROM_SIZE_OVERRIDE
 	hex
-	default CBFS_SIZE
+	default 0
 
 # TODO: Can probably be removed once all chipsets have kconfig options for it.
 config VIDEO_MB
diff --git a/src/cpu/intel/car/cache_as_ram_ht.inc b/src/cpu/intel/car/cache_as_ram_ht.inc
index fe1e29a..fb65316 100644
--- a/src/cpu/intel/car/cache_as_ram_ht.inc
+++ b/src/cpu/intel/car/cache_as_ram_ht.inc
@@ -392,7 +392,7 @@
 	movl	$(~(CONFIG_RAMTOP - 1) | MTRRphysMaskValid), %eax
 	wrmsr
 
-#if CONFIG_CACHE_ROM_SIZE
+#if CACHE_ROM_SIZE
 	/* Enable caching and Speculative Reads for Flash ROM device. */
 	movl	$MTRRphysBase_MSR(1), %ecx
 	movl	$(CACHE_ROM_BASE | MTRR_TYPE_WRPROT), %eax
@@ -400,7 +400,7 @@
 	wrmsr
 	movl	$MTRRphysMask_MSR(1), %ecx
 	rdmsr
-	movl	$(~(CONFIG_CACHE_ROM_SIZE - 1) | MTRRphysMaskValid), %eax
+	movl	$(~(CACHE_ROM_SIZE - 1) | MTRRphysMaskValid), %eax
 	wrmsr
 #endif
 
diff --git a/src/cpu/intel/fsp_model_206ax/cache_as_ram.inc b/src/cpu/intel/fsp_model_206ax/cache_as_ram.inc
index a8d7cc5..61fb1c2 100644
--- a/src/cpu/intel/fsp_model_206ax/cache_as_ram.inc
+++ b/src/cpu/intel/fsp_model_206ax/cache_as_ram.inc
@@ -173,7 +173,7 @@
 	movl	$CPU_PHYSMASK_HI, %edx	// 36bit address space
 	wrmsr
 
-#if CONFIG_CACHE_ROM_SIZE
+#if CACHE_ROM_SIZE
 	/* Enable Caching and speculative Reads for the
 	 * complete ROM now that we actually have RAM.
 	 */
@@ -182,7 +182,7 @@
 	xorl	%edx, %edx
 	wrmsr
 	movl	$MTRRphysMask_MSR(1), %ecx
-	movl	$(~(CONFIG_CACHE_ROM_SIZE - 1) | MTRRphysMaskValid), %eax
+	movl	$(~(CACHE_ROM_SIZE - 1) | MTRRphysMaskValid), %eax
 	movl	$CPU_PHYSMASK_HI, %edx
 	wrmsr
 #endif
diff --git a/src/cpu/intel/haswell/romstage.c b/src/cpu/intel/haswell/romstage.c
index 35b51c5..edb2e80 100644
--- a/src/cpu/intel/haswell/romstage.c
+++ b/src/cpu/intel/haswell/romstage.c
@@ -124,9 +124,9 @@
 
 	/* Cache the ROM as WP just below 4GiB. */
 	slot = stack_push(slot, mtrr_mask_upper); /* upper mask */
-	slot = stack_push(slot, ~(CONFIG_ROM_SIZE - 1) | MTRRphysMaskValid);
+	slot = stack_push(slot, ~(CACHE_ROM_SIZE - 1) | MTRRphysMaskValid);
 	slot = stack_push(slot, 0); /* upper base */
-	slot = stack_push(slot, ~(CONFIG_ROM_SIZE - 1) | MTRR_TYPE_WRPROT);
+	slot = stack_push(slot, ~(CACHE_ROM_SIZE - 1) | MTRR_TYPE_WRPROT);
 	num_mtrrs++;
 
 	/* Cache RAM as WB from 0 -> CONFIG_RAMTOP. */
diff --git a/src/cpu/intel/model_2065x/cache_as_ram.inc b/src/cpu/intel/model_2065x/cache_as_ram.inc
index dce0e39..b791881 100644
--- a/src/cpu/intel/model_2065x/cache_as_ram.inc
+++ b/src/cpu/intel/model_2065x/cache_as_ram.inc
@@ -238,7 +238,7 @@
 	movl	$CPU_PHYSMASK_HI, %edx	// 36bit address space
 	wrmsr
 
-#if CONFIG_CACHE_ROM_SIZE
+#if CACHE_ROM_SIZE
 	/* Enable Caching and speculative Reads for the
 	 * complete ROM now that we actually have RAM.
 	 */
@@ -247,7 +247,7 @@
 	xorl	%edx, %edx
 	wrmsr
 	movl	$MTRRphysMask_MSR(1), %ecx
-	movl	$(~(CONFIG_CACHE_ROM_SIZE - 1) | MTRRphysMaskValid), %eax
+	movl	$(~(CACHE_ROM_SIZE - 1) | MTRRphysMaskValid), %eax
 	movl	$CPU_PHYSMASK_HI, %edx
 	wrmsr
 #endif
diff --git a/src/cpu/intel/model_206ax/cache_as_ram.inc b/src/cpu/intel/model_206ax/cache_as_ram.inc
index b4119cc..887d92b 100644
--- a/src/cpu/intel/model_206ax/cache_as_ram.inc
+++ b/src/cpu/intel/model_206ax/cache_as_ram.inc
@@ -250,7 +250,7 @@
 	movl	$CPU_PHYSMASK_HI, %edx	// 36bit address space
 	wrmsr
 
-#if CONFIG_CACHE_ROM_SIZE
+#if CACHE_ROM_SIZE
 	/* Enable Caching and speculative Reads for the
 	 * complete ROM now that we actually have RAM.
 	 */
@@ -259,7 +259,7 @@
 	xorl	%edx, %edx
 	wrmsr
 	movl	$MTRRphysMask_MSR(1), %ecx
-	movl	$(~(CONFIG_CACHE_ROM_SIZE - 1) | MTRRphysMaskValid), %eax
+	movl	$(~(CACHE_ROM_SIZE - 1) | MTRRphysMaskValid), %eax
 	movl	$CPU_PHYSMASK_HI, %edx
 	wrmsr
 #endif
diff --git a/src/cpu/intel/model_6ex/cache_as_ram.inc b/src/cpu/intel/model_6ex/cache_as_ram.inc
index ac3c66b..baf4ae8 100644
--- a/src/cpu/intel/model_6ex/cache_as_ram.inc
+++ b/src/cpu/intel/model_6ex/cache_as_ram.inc
@@ -186,14 +186,14 @@
 	movl	$CPU_PHYSMASK_HI, %edx
 	wrmsr
 
-#if CONFIG_CACHE_ROM_SIZE
+#if CACHE_ROM_SIZE
 	/* Enable caching and Speculative Reads for Flash ROM device. */
 	movl	$MTRRphysBase_MSR(1), %ecx
 	movl	$(CACHE_ROM_BASE | MTRR_TYPE_WRPROT), %eax
 	xorl	%edx, %edx
 	wrmsr
 	movl	$MTRRphysMask_MSR(1), %ecx
-	movl	$(~(CONFIG_CACHE_ROM_SIZE - 1) | MTRRphysMaskValid), %eax
+	movl	$(~(CACHE_ROM_SIZE - 1) | MTRRphysMaskValid), %eax
 	movl	$CPU_PHYSMASK_HI, %edx
 	wrmsr
 #endif
diff --git a/src/cpu/x86/mtrr/mtrr.c b/src/cpu/x86/mtrr/mtrr.c
index d168978..dd404a8 100644
--- a/src/cpu/x86/mtrr/mtrr.c
+++ b/src/cpu/x86/mtrr/mtrr.c
@@ -190,8 +190,8 @@
 		 * when CONFIG_CACHE_ROM is enabled. The ROM is assumed
 		 * to be located at 4GiB - rom size. */
 		resource_t rom_base = RANGE_TO_PHYS_ADDR(
-			RANGE_4GB - PHYS_TO_RANGE_ADDR(CONFIG_ROM_SIZE));
-		memranges_insert(addr_space, rom_base, CONFIG_ROM_SIZE,
+			RANGE_4GB - PHYS_TO_RANGE_ADDR(CACHE_ROM_SIZE));
+		memranges_insert(addr_space, rom_base, CACHE_ROM_SIZE,
 		                 MTRR_TYPE_WRPROT);
 #endif
 
diff --git a/src/include/cpu/x86/mtrr.h b/src/include/cpu/x86/mtrr.h
index 913ba47..bbcde8a 100644
--- a/src/include/cpu/x86/mtrr.h
+++ b/src/include/cpu/x86/mtrr.h
@@ -96,6 +96,13 @@
 void set_var_mtrr(unsigned reg, unsigned base, unsigned size, unsigned type);
 #endif
 
+/* Align up to next power of 2, suitable for ROMCC and assembler too.
+ * Range of result 256kB to 128MB is good enough here.
+ */
+#define _POW2_MASK(x)	((x>>1)|(x>>2)|(x>>3)|(x>>4)|(x>>5)| \
+					(x>>6)|(x>>7)|(x>>8)|((1<<18)-1))
+#define _ALIGN_UP_POW2(x)	((x + _POW2_MASK(x)) & ~_POW2_MASK(x))
+
 #if !defined(CONFIG_RAMTOP)
 # error "CONFIG_RAMTOP not defined"
 #endif
@@ -104,11 +111,32 @@
 # error "CONFIG_XIP_ROM_SIZE is not a power of 2"
 #endif
 
-#if ((CONFIG_CACHE_ROM_SIZE & (CONFIG_CACHE_ROM_SIZE -1)) != 0)
-# error "CONFIG_CACHE_ROM_SIZE is not a power of 2"
+/* Select CACHE_ROM_SIZE to use with MTRR setup. For most cases this
+ * resolves to a suitable CONFIG_ROM_SIZE but some odd cases need to
+ * use CONFIG_CACHE_ROM_SIZE_OVERRIDE in the mainboard Kconfig.
+ */
+#if (CONFIG_CACHE_ROM_SIZE_OVERRIDE != 0)
+# define CACHE_ROM_SIZE	CONFIG_CACHE_ROM_SIZE_OVERRIDE
+#else
+# if ((CONFIG_ROM_SIZE & (CONFIG_ROM_SIZE-1)) == 0)
+#  define CACHE_ROM_SIZE CONFIG_ROM_SIZE
+# else
+#  define CACHE_ROM_SIZE _ALIGN_UP_POW2(CONFIG_ROM_SIZE)
+#  if (CACHE_ROM_SIZE < CONFIG_ROM_SIZE) || (CACHE_ROM_SIZE >= (2 * CONFIG_ROM_SIZE))
+#   error "CACHE_ROM_SIZE is not optimal."
+#  endif
+# endif
 #endif
 
-#define CACHE_ROM_BASE	(((1<<20) - (CONFIG_CACHE_ROM_SIZE>>12))<<12)
+#if ((CACHE_ROM_SIZE & (CACHE_ROM_SIZE-1)) != 0)
+# error "CACHE_ROM_SIZE is not a power of 2."
+#endif
+
+#define CACHE_ROM_BASE	(((1<<20) - (CACHE_ROM_SIZE>>12))<<12)
+
+#if ((CONFIG_DCACHE_RAM_BASE + CONFIG_DCACHE_RAM_SIZE) * 1UL > CACHE_ROM_BASE * 1UL)
+# error "CAR region (WB) and flash (WP) regions overlap."
+#endif
 
 #if (CONFIG_RAMTOP & (CONFIG_RAMTOP - 1)) != 0
 # error "CONFIG_RAMTOP must be a power of 2"
diff --git a/src/mainboard/amd/dinar/agesawrapper.c b/src/mainboard/amd/dinar/agesawrapper.c
index 179822b..d61c5dc 100644
--- a/src/mainboard/amd/dinar/agesawrapper.c
+++ b/src/mainboard/amd/dinar/agesawrapper.c
@@ -24,6 +24,7 @@
 
 #include <stdint.h>
 #include <string.h>
+#include <cpu/x86/mtrr.h>
 #include "agesawrapper.h"
 #include "BiosCallOuts.h"
 #include "cpuRegisters.h"
@@ -271,9 +272,9 @@
 	LibAmdPciWrite(AccessWidth8, PciAddress, &PciData, &StdHeader);
 
 	/* Set ROM cache onto WP to decrease post time */
-	MsrReg = (0x0100000000 - CONFIG_ROM_SIZE) | 5;
+	MsrReg = (0x0100000000 - CACHE_ROM_SIZE) | 5;
 	LibAmdMsrWrite (0x20E, &MsrReg, &StdHeader);
-	MsrReg = ((1ULL << CONFIG_CPU_ADDR_BITS) - CONFIG_ROM_SIZE) | 0x800ull;
+	MsrReg = ((1ULL << CONFIG_CPU_ADDR_BITS) - CACHE_ROM_SIZE) | 0x800ull;
 	LibAmdMsrWrite (0x20F, &MsrReg, &StdHeader);
 
 	Status = AGESA_SUCCESS;
diff --git a/src/mainboard/amd/inagua/romstage.c b/src/mainboard/amd/inagua/romstage.c
index 2e46516..718d2b2 100644
--- a/src/mainboard/amd/inagua/romstage.c
+++ b/src/mainboard/amd/inagua/romstage.c
@@ -29,6 +29,7 @@
 #include <cpu/x86/lapic.h>
 #include <console/console.h>
 #include <console/loglevel.h>
+#include <cpu/x86/mtrr.h>
 #include "agesawrapper.h"
 #include "cpu/x86/bist.h"
 #include "superio/smsc/kbc1100/kbc1100_early_init.c"
@@ -45,8 +46,8 @@
 	/* all cores: allow caching of flash chip code and data
 	 * (there are no cache-as-ram reliability concerns with family 14h)
 	 */
-	__writemsr (0x20c, (0x0100000000ull - CONFIG_ROM_SIZE) | 5);
-	__writemsr (0x20d, (0x1000000000ull - CONFIG_ROM_SIZE) | 0x800);
+	__writemsr (0x20c, (0x0100000000ull - CACHE_ROM_SIZE) | 5);
+	__writemsr (0x20d, (0x1000000000ull - CACHE_ROM_SIZE) | 0x800);
 
 	/* all cores: set pstate 0 (1600 MHz) early to save a few ms of boot time
 	 */
diff --git a/src/mainboard/amd/olivehill/agesawrapper.c b/src/mainboard/amd/olivehill/agesawrapper.c
index ecd85ee..a1cf7de 100644
--- a/src/mainboard/amd/olivehill/agesawrapper.c
+++ b/src/mainboard/amd/olivehill/agesawrapper.c
@@ -24,6 +24,7 @@
 
 #include <stdint.h>
 #include <string.h>
+#include <cpu/x86/mtrr.h>
 #include "agesawrapper.h"
 #include "BiosCallOuts.h"
 #include "cpuRegisters.h"
@@ -166,9 +167,9 @@
 	LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
 
 	/* Set ROM cache onto WP to decrease post time */
-	MsrReg = (0x0100000000ull - CONFIG_ROM_SIZE) | 5ull;
+	MsrReg = (0x0100000000ull - CACHE_ROM_SIZE) | 5ull;
 	LibAmdMsrWrite (0x20C, &MsrReg, &StdHeader);
-	MsrReg = ((1ULL << CONFIG_CPU_ADDR_BITS) - CONFIG_ROM_SIZE) | 0x800ull;
+	MsrReg = ((1ULL << CONFIG_CPU_ADDR_BITS) - CACHE_ROM_SIZE) | 0x800ull;
 	LibAmdMsrWrite (0x20D, &MsrReg, &StdHeader);
 
 	Status = AGESA_SUCCESS;
diff --git a/src/mainboard/amd/parmer/agesawrapper.c b/src/mainboard/amd/parmer/agesawrapper.c
index fcbdded..827ce6d 100644
--- a/src/mainboard/amd/parmer/agesawrapper.c
+++ b/src/mainboard/amd/parmer/agesawrapper.c
@@ -24,6 +24,7 @@
 
 #include <stdint.h>
 #include <string.h>
+#include <cpu/x86/mtrr.h>
 #include "agesawrapper.h"
 #include "BiosCallOuts.h"
 #include "cpuRegisters.h"
@@ -166,9 +167,9 @@
 	LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
 
 	/* Set ROM cache onto WP to decrease post time */
-	MsrReg = (0x0100000000ull - CONFIG_ROM_SIZE) | 5ull;
+	MsrReg = (0x0100000000ull - CACHE_ROM_SIZE) | 5ull;
 	LibAmdMsrWrite (0x20C, &MsrReg, &StdHeader);
-	MsrReg = ((1ULL << CONFIG_CPU_ADDR_BITS) - CONFIG_ROM_SIZE) | 0x800ull;
+	MsrReg = ((1ULL << CONFIG_CPU_ADDR_BITS) - CACHE_ROM_SIZE) | 0x800ull;
 	LibAmdMsrWrite (0x20D, &MsrReg, &StdHeader);
 
 	Status = AGESA_SUCCESS;
diff --git a/src/mainboard/amd/persimmon/romstage.c b/src/mainboard/amd/persimmon/romstage.c
index 58829b4..98c64eda 100644
--- a/src/mainboard/amd/persimmon/romstage.c
+++ b/src/mainboard/amd/persimmon/romstage.c
@@ -28,6 +28,7 @@
 #include <cpu/x86/lapic.h>
 #include <console/console.h>
 #include <console/loglevel.h>
+#include <cpu/x86/mtrr.h>
 #include "agesawrapper.h"
 #include "cpu/x86/bist.h"
 #include "superio/fintek/f81865f/f81865f_early_serial.c"
@@ -58,8 +59,8 @@
 	 * All cores: allow caching of flash chip code and data
 	 * (there are no cache-as-ram reliability concerns with family 14h)
 	 */
-	__writemsr (0x20c, (0x0100000000ull - CONFIG_ROM_SIZE) | 5);
-	__writemsr (0x20d, (0x1000000000ull - CONFIG_ROM_SIZE) | 0x800);
+	__writemsr (0x20c, (0x0100000000ull - CACHE_ROM_SIZE) | 5);
+	__writemsr (0x20d, (0x1000000000ull - CACHE_ROM_SIZE) | 0x800);
 
 	/* All cores: set pstate 0 (1600 MHz) early to save a few ms of boot time */
 	__writemsr (0xc0010062, 0);
diff --git a/src/mainboard/amd/south_station/romstage.c b/src/mainboard/amd/south_station/romstage.c
index af12026..20c973c 100644
--- a/src/mainboard/amd/south_station/romstage.c
+++ b/src/mainboard/amd/south_station/romstage.c
@@ -29,6 +29,7 @@
 #include <cpu/x86/lapic.h>
 #include <console/console.h>
 #include <console/loglevel.h>
+#include <cpu/x86/mtrr.h>
 #include "agesawrapper.h"
 #include "cpu/x86/bist.h"
 #include "superio/fintek/f81865f/f81865f_early_serial.c"
@@ -46,8 +47,8 @@
 	 * All cores: allow caching of flash chip code and data
 	 * (there are no cache-as-ram reliability concerns with family 14h)
 	 */
-	__writemsr (0x20c, (0x0100000000ull - CONFIG_ROM_SIZE) | 5);
-	__writemsr (0x20d, (0x1000000000ull - CONFIG_ROM_SIZE) | 0x800);
+	__writemsr (0x20c, (0x0100000000ull - CACHE_ROM_SIZE) | 5);
+	__writemsr (0x20d, (0x1000000000ull - CACHE_ROM_SIZE) | 0x800);
 
 	/* All cores: set pstate 0 (1600 MHz) early to save a few ms of boot time */
 	__writemsr (0xc0010062, 0);
diff --git a/src/mainboard/amd/thatcher/agesawrapper.c b/src/mainboard/amd/thatcher/agesawrapper.c
index 6331197..c50f3a0 100644
--- a/src/mainboard/amd/thatcher/agesawrapper.c
+++ b/src/mainboard/amd/thatcher/agesawrapper.c
@@ -24,6 +24,7 @@
 
 #include <stdint.h>
 #include <string.h>
+#include <cpu/x86/mtrr.h>
 #include "agesawrapper.h"
 #include "BiosCallOuts.h"
 #include "cpuRegisters.h"
@@ -166,9 +167,9 @@
 	LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
 
 	/* Set ROM cache onto WP to decrease post time */
-	MsrReg = (0x0100000000ull - CONFIG_ROM_SIZE) | 5ull;
+	MsrReg = (0x0100000000ull - CACHE_ROM_SIZE) | 5ull;
 	LibAmdMsrWrite (0x20C, &MsrReg, &StdHeader);
-	MsrReg = ((1ULL << CONFIG_CPU_ADDR_BITS) - CONFIG_ROM_SIZE) | 0x800ull;
+	MsrReg = ((1ULL << CONFIG_CPU_ADDR_BITS) - CACHE_ROM_SIZE) | 0x800ull;
 	LibAmdMsrWrite (0x20D, &MsrReg, &StdHeader);
 
 	Status = AGESA_SUCCESS;
diff --git a/src/mainboard/amd/torpedo/agesawrapper.c b/src/mainboard/amd/torpedo/agesawrapper.c
index 8d06811..45b591a 100644
--- a/src/mainboard/amd/torpedo/agesawrapper.c
+++ b/src/mainboard/amd/torpedo/agesawrapper.c
@@ -24,6 +24,7 @@
 
 #include <stdint.h>
 #include <string.h>
+#include <cpu/x86/mtrr.h>
 #include "agesawrapper.h"
 #include "BiosCallOuts.h"
 #include "cpuRegisters.h"
@@ -279,9 +280,9 @@
   LibAmdPciWrite(AccessWidth8, PciAddress, &PciData, &StdHeader);
 
   /* Set ROM cache onto WP to decrease post time */
-  MsrReg = (0x0100000000ull - CONFIG_ROM_SIZE) | 5ull;
+  MsrReg = (0x0100000000ull - CACHE_ROM_SIZE) | 5ull;
   LibAmdMsrWrite (0x20C, &MsrReg, &StdHeader);
-  MsrReg = ((1ULL << CONFIG_CPU_ADDR_BITS) - CONFIG_ROM_SIZE) | 0x800ull;
+  MsrReg = ((1ULL << CONFIG_CPU_ADDR_BITS) - CACHE_ROM_SIZE) | 0x800ull;
   LibAmdMsrWrite (0x20D, &MsrReg, &StdHeader);
 
   /* Clear all pending SMI. On S3 clear power button enable so it wll not generate an SMI */
diff --git a/src/mainboard/amd/union_station/romstage.c b/src/mainboard/amd/union_station/romstage.c
index e4cd21b..6868755 100644
--- a/src/mainboard/amd/union_station/romstage.c
+++ b/src/mainboard/amd/union_station/romstage.c
@@ -29,6 +29,7 @@
 #include <cpu/x86/lapic.h>
 #include <console/console.h>
 #include <console/loglevel.h>
+#include <cpu/x86/mtrr.h>
 #include "agesawrapper.h"
 #include "cpu/x86/bist.h"
 #include "cpu/x86/lapic.h"
@@ -45,8 +46,8 @@
 	 * All cores: allow caching of flash chip code and data
 	 * (there are no cache-as-ram reliability concerns with family 14h)
 	 */
-	__writemsr (0x20c, (0x0100000000ull - CONFIG_ROM_SIZE) | 5);
-	__writemsr (0x20d, (0x1000000000ull - CONFIG_ROM_SIZE) | 0x800);
+	__writemsr (0x20c, (0x0100000000ull - CACHE_ROM_SIZE) | 5);
+	__writemsr (0x20d, (0x1000000000ull - CACHE_ROM_SIZE) | 0x800);
 
 	if (!cpu_init_detectedx && boot_cpu()) {
 		post_code(0x30);
diff --git a/src/mainboard/asrock/e350m1/romstage.c b/src/mainboard/asrock/e350m1/romstage.c
index b76e6a8..bf850a3 100644
--- a/src/mainboard/asrock/e350m1/romstage.c
+++ b/src/mainboard/asrock/e350m1/romstage.c
@@ -28,6 +28,7 @@
 #include <cpu/x86/lapic.h>
 #include <console/console.h>
 #include <console/loglevel.h>
+#include <cpu/x86/mtrr.h>
 #include "agesawrapper.h"
 #include "cpu/x86/bist.h"
 #include "superio/winbond/w83627hf/early_serial.c"
@@ -49,8 +50,8 @@
 	 * All cores: allow caching of flash chip code and data
 	 * (there are no cache-as-ram reliability concerns with family 14h)
 	 */
-	__writemsr(0x20c, (0x0100000000ull - CONFIG_ROM_SIZE) | 5);
-	__writemsr(0x20d, (0x1000000000ull - CONFIG_ROM_SIZE) | 0x800);
+	__writemsr(0x20c, (0x0100000000ull - CACHE_ROM_SIZE) | 5);
+	__writemsr(0x20d, (0x1000000000ull - CACHE_ROM_SIZE) | 0x800);
 
 	/* All cores: set pstate 0 (1600 MHz) early to save a few ms of boot time */
 	__writemsr(0xc0010062, 0);
diff --git a/src/mainboard/asrock/imb-a180/agesawrapper.c b/src/mainboard/asrock/imb-a180/agesawrapper.c
index 8300e34..0f9212f 100644
--- a/src/mainboard/asrock/imb-a180/agesawrapper.c
+++ b/src/mainboard/asrock/imb-a180/agesawrapper.c
@@ -24,6 +24,7 @@
 
 #include <stdint.h>
 #include <string.h>
+#include <cpu/x86/mtrr.h>
 #include "agesawrapper.h"
 #include "BiosCallOuts.h"
 #include "cpuRegisters.h"
@@ -166,9 +167,9 @@
 	LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
 
 	/* Set ROM cache onto WP to decrease post time */
-	MsrReg = (0x0100000000ull - CONFIG_ROM_SIZE) | 5ull;
+	MsrReg = (0x0100000000ull - CACHE_ROM_SIZE) | 5ull;
 	LibAmdMsrWrite (0x20C, &MsrReg, &StdHeader);
-	MsrReg = ((1ULL << CONFIG_CPU_ADDR_BITS) - CONFIG_ROM_SIZE) | 0x800ull;
+	MsrReg = ((1ULL << CONFIG_CPU_ADDR_BITS) - CACHE_ROM_SIZE) | 0x800ull;
 	LibAmdMsrWrite (0x20D, &MsrReg, &StdHeader);
 
 	Status = AGESA_SUCCESS;
diff --git a/src/mainboard/asus/f2a85-m/agesawrapper.c b/src/mainboard/asus/f2a85-m/agesawrapper.c
index 529878b..233d2bb 100644
--- a/src/mainboard/asus/f2a85-m/agesawrapper.c
+++ b/src/mainboard/asus/f2a85-m/agesawrapper.c
@@ -24,6 +24,7 @@
 
 #include <stdint.h>
 #include <string.h>
+#include <cpu/x86/mtrr.h>
 #include "agesawrapper.h"
 #include "BiosCallOuts.h"
 #include "cpuRegisters.h"
@@ -166,9 +167,9 @@
 	LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
 
 	/* Set ROM cache onto WP to decrease post time */
-	MsrReg = (0x0100000000ull - CONFIG_ROM_SIZE) | 5ull;
+	MsrReg = (0x0100000000ull - CACHE_ROM_SIZE) | 5ull;
 	LibAmdMsrWrite (0x20C, &MsrReg, &StdHeader);
-	MsrReg = ((1ULL << CONFIG_CPU_ADDR_BITS) - CONFIG_ROM_SIZE) | 0x800ull;
+	MsrReg = ((1ULL << CONFIG_CPU_ADDR_BITS) - CACHE_ROM_SIZE) | 0x800ull;
 	LibAmdMsrWrite (0x20D, &MsrReg, &StdHeader);
 
 	Status = AGESA_SUCCESS;
diff --git a/src/mainboard/gizmosphere/gizmo/romstage.c b/src/mainboard/gizmosphere/gizmo/romstage.c
index 05699cc..705d429 100755
--- a/src/mainboard/gizmosphere/gizmo/romstage.c
+++ b/src/mainboard/gizmosphere/gizmo/romstage.c
@@ -29,6 +29,7 @@
 #include <cpu/x86/lapic.h>
 #include <console/console.h>
 #include <console/loglevel.h>
+#include <cpu/x86/mtrr.h>
 #include "agesawrapper.h"
 #include "cpu/x86/bist.h"
 #include "drivers/pc80/i8254.c"
@@ -60,12 +61,12 @@
 	 * All cores: allow caching of flash chip code and data
 	 * (there are no cache-as-ram reliability concerns with family 14h)
 	 */
-	msr.lo = ((0x0100000000ull - CONFIG_ROM_SIZE) | 5) & 0xFFFFFFFF;
-	msr.hi = ((0x0100000000ull - CONFIG_ROM_SIZE) | 5) >> 32;
+	msr.lo = ((0x0100000000ull - CACHE_ROM_SIZE) | 5) & 0xFFFFFFFF;
+	msr.hi = ((0x0100000000ull - CACHE_ROM_SIZE) | 5) >> 32;
 	wrmsr (MSR_MTRR_VARIABLE_BASE6, msr);
 
-	msr.lo = ((0x1000000000ull - CONFIG_ROM_SIZE) | 0x800) & 0xFFFFFFFF;
-	msr.hi = ((0x1000000000ull - CONFIG_ROM_SIZE) | 0x800) >> 32;
+	msr.lo = ((0x1000000000ull - CACHE_ROM_SIZE) | 0x800) & 0xFFFFFFFF;
+	msr.hi = ((0x1000000000ull - CACHE_ROM_SIZE) | 0x800) >> 32;
 	wrmsr (MSR_MTRR_VARIABLE_MASK6, msr);
 
 	/* All cores: set pstate 0 (1600 MHz) early to save a few ms of boot time */
diff --git a/src/mainboard/lippert/frontrunner-af/romstage.c b/src/mainboard/lippert/frontrunner-af/romstage.c
index 093a047..9ecd087 100644
--- a/src/mainboard/lippert/frontrunner-af/romstage.c
+++ b/src/mainboard/lippert/frontrunner-af/romstage.c
@@ -28,6 +28,7 @@
 #include <cpu/x86/lapic.h>
 #include <console/console.h>
 #include <console/loglevel.h>
+#include <cpu/x86/mtrr.h>
 #include "agesawrapper.h"
 #include "cpu/x86/bist.h"
 #include "superio/smsc/smscsuperio/early_serial.c"
@@ -58,8 +59,8 @@
 	 * All cores: allow caching of flash chip code and data
 	 * (there are no cache-as-ram reliability concerns with family 14h)
 	 */
-	__writemsr (0x20c, (0x0100000000ull - CONFIG_ROM_SIZE) | 5);
-	__writemsr (0x20d, (0x1000000000ull - CONFIG_ROM_SIZE) | 0x800);
+	__writemsr (0x20c, (0x0100000000ull - CACHE_ROM_SIZE) | 5);
+	__writemsr (0x20d, (0x1000000000ull - CACHE_ROM_SIZE) | 0x800);
 
 	/* All cores: set pstate 0 (1600 MHz) early to save a few ms of boot time */
 	__writemsr (0xc0010062, 0);
diff --git a/src/mainboard/lippert/toucan-af/romstage.c b/src/mainboard/lippert/toucan-af/romstage.c
index 88b8100..4f62268 100644
--- a/src/mainboard/lippert/toucan-af/romstage.c
+++ b/src/mainboard/lippert/toucan-af/romstage.c
@@ -28,6 +28,7 @@
 #include <cpu/x86/lapic.h>
 #include <console/console.h>
 #include <console/loglevel.h>
+#include <cpu/x86/mtrr.h>
 #include "agesawrapper.h"
 #include "cpu/x86/bist.h"
 #include "superio/winbond/w83627dhg/w83627dhg.h"
@@ -58,8 +59,8 @@
 	 * All cores: allow caching of flash chip code and data
 	 * (there are no cache-as-ram reliability concerns with family 14h)
 	 */
-	__writemsr (0x20c, (0x0100000000ull - CONFIG_ROM_SIZE) | 5);
-	__writemsr (0x20d, (0x1000000000ull - CONFIG_ROM_SIZE) | 0x800);
+	__writemsr (0x20c, (0x0100000000ull - CACHE_ROM_SIZE) | 5);
+	__writemsr (0x20d, (0x1000000000ull - CACHE_ROM_SIZE) | 0x800);
 
 	/* All cores: set pstate 0 (1600 MHz) early to save a few ms of boot time */
 	__writemsr (0xc0010062, 0);
diff --git a/src/mainboard/supermicro/h8qgi/agesawrapper.c b/src/mainboard/supermicro/h8qgi/agesawrapper.c
index 3199575..4704c26 100644
--- a/src/mainboard/supermicro/h8qgi/agesawrapper.c
+++ b/src/mainboard/supermicro/h8qgi/agesawrapper.c
@@ -24,6 +24,7 @@
 
 #include <stdint.h>
 #include <string.h>
+#include <cpu/x86/mtrr.h>
 #include "agesawrapper.h"
 #include "BiosCallOuts.h"
 #include "cpuRegisters.h"
@@ -192,9 +193,9 @@
 	LibAmdMsrWrite(0xC001001F, &MsrReg, &StdHeader);
 
 	/* Set ROM cache onto WP to decrease post time */
-	MsrReg = (0x0100000000 - CONFIG_ROM_SIZE) | 5;
+	MsrReg = (0x0100000000 - CACHE_ROM_SIZE) | 5;
 	LibAmdMsrWrite (0x20C, &MsrReg, &StdHeader);
-	MsrReg = ((1ULL << CONFIG_CPU_ADDR_BITS) - CONFIG_ROM_SIZE) | 0x800ull;
+	MsrReg = ((1ULL << CONFIG_CPU_ADDR_BITS) - CACHE_ROM_SIZE) | 0x800ull;
 	LibAmdMsrWrite(0x20D, &MsrReg, &StdHeader);
 
 	Status = AGESA_SUCCESS;
diff --git a/src/mainboard/supermicro/h8scm/agesawrapper.c b/src/mainboard/supermicro/h8scm/agesawrapper.c
index 49abe25..7700489 100644
--- a/src/mainboard/supermicro/h8scm/agesawrapper.c
+++ b/src/mainboard/supermicro/h8scm/agesawrapper.c
@@ -24,6 +24,7 @@
 
 #include <stdint.h>
 #include <string.h>
+#include <cpu/x86/mtrr.h>
 #include "agesawrapper.h"
 #include "BiosCallOuts.h"
 #include "cpuRegisters.h"
@@ -192,9 +193,9 @@
 	LibAmdMsrWrite(0xC001001F, &MsrReg, &StdHeader);
 
 	/* Set ROM cache onto WP to decrease post time */
-	MsrReg = (0x0100000000 - CONFIG_ROM_SIZE) | 5;
+	MsrReg = (0x0100000000 - CACHE_ROM_SIZE) | 5;
 	LibAmdMsrWrite (0x20C, &MsrReg, &StdHeader);
-	MsrReg = ((1ULL << CONFIG_CPU_ADDR_BITS) - CONFIG_ROM_SIZE) | 0x800ull;
+	MsrReg = ((1ULL << CONFIG_CPU_ADDR_BITS) - CACHE_ROM_SIZE) | 0x800ull;
 	LibAmdMsrWrite(0x20D, &MsrReg, &StdHeader);
 
 	Status = AGESA_SUCCESS;
diff --git a/src/mainboard/tyan/s8226/agesawrapper.c b/src/mainboard/tyan/s8226/agesawrapper.c
index 7fba1b7..e5419db 100644
--- a/src/mainboard/tyan/s8226/agesawrapper.c
+++ b/src/mainboard/tyan/s8226/agesawrapper.c
@@ -24,6 +24,7 @@
 
 #include <stdint.h>
 #include <string.h>
+#include <cpu/x86/mtrr.h>
 #include "agesawrapper.h"
 #include "BiosCallOuts.h"
 #include "cpuRegisters.h"
@@ -202,9 +203,9 @@
 	LibAmdPciWrite(AccessWidth32, PciAddress, &PciData, &StdHeader);
 
 	/* Set ROM cache onto WP to decrease post time */
-	MsrReg = (0x0100000000ull - CONFIG_ROM_SIZE) | 5ull;
+	MsrReg = (0x0100000000ull - CACHE_ROM_SIZE) | 5ull;
 	LibAmdMsrWrite (0x20C, &MsrReg, &StdHeader);
-	MsrReg = ((1ULL << CONFIG_CPU_ADDR_BITS) - CONFIG_ROM_SIZE) | 0x800ull;
+	MsrReg = ((1ULL << CONFIG_CPU_ADDR_BITS) - CACHE_ROM_SIZE) | 0x800ull;
 	LibAmdMsrWrite (0x20D, &MsrReg, &StdHeader);
 
 	Status = AGESA_SUCCESS;