diff --git a/src/cpu/amd/model_lx/msrinit.c b/src/cpu/amd/model_lx/msrinit.c
index 35c9ae4f25..6569338a2f 100644
--- a/src/cpu/amd/model_lx/msrinit.c
+++ b/src/cpu/amd/model_lx/msrinit.c
@@ -39,6 +39,19 @@ static const msrinit_t msr_table[] =
 	{MSR_GLIU1_BASE1,   {.hi = 0x20000000,.lo = 0x000fff80}}, // 0x00000-0x7FFFF
 	{MSR_GLIU1_BASE2,   {.hi = 0x20000000,.lo = 0x080fffe0}}, // 0x80000-0x9FFFF
 	{MSR_GLIU1_SHADOW,  {.hi = 0x2000FFFF,.lo = 0xFFFF0003}}, // 0xC0000-0xFFFFF
+
+	/* Pre-setup access to memory above 1Mb. Here we set up about 500Mb of memory.
+	 * It doesn't really matter in fact how much, however, because the only usage
+	 * of this extended memory will be to host the coreboot_ram stage at RAMBASE,
+	 * currently 1Mb.
+	 * These registers will be set to their correct value by the Northbridge init code.
+	 * 
+	 * WARNING: if coreboot_ram could not be loaded, these registers are probably
+	 * incorrectly set here. You may comment the following two lines and set RAMBASE
+	 * to 0x4000 to revert to the previous behavior for LX-boards.
+	 */
+	{MSR_GLIU0_SYSMEM,  {.hi = 0x2000001F,.lo = 0x6BF00100}}, // 0x100000-0x1F6BF000
+	{MSR_GLIU1_SYSMEM,  {.hi = 0x2000001F,.lo = 0x6BF00100}}, // 0x100000-0x1F6BF000
 };
 
 static void msr_init(void)
diff --git a/src/mainboard/amd/db800/Kconfig b/src/mainboard/amd/db800/Kconfig
index 006de405e1..b973c9dad8 100644
--- a/src/mainboard/amd/db800/Kconfig
+++ b/src/mainboard/amd/db800/Kconfig
@@ -25,8 +25,4 @@ config IRQ_SLOT_COUNT
 	int
 	default 4
 
-config RAMBASE
-	hex
-	default 0x4000
-
 endif # BOARD_AMD_DB800
diff --git a/src/mainboard/amd/norwich/Kconfig b/src/mainboard/amd/norwich/Kconfig
index d97e522161..6c65f4de1a 100644
--- a/src/mainboard/amd/norwich/Kconfig
+++ b/src/mainboard/amd/norwich/Kconfig
@@ -24,8 +24,4 @@ config IRQ_SLOT_COUNT
 	int
 	default 6
 
-config RAMBASE
-	hex
-	default 0x4000
-
 endif # BOARD_AMD_NORWICH
diff --git a/src/mainboard/artecgroup/dbe61/Kconfig b/src/mainboard/artecgroup/dbe61/Kconfig
index 3997be8856..9dfb0ca72a 100644
--- a/src/mainboard/artecgroup/dbe61/Kconfig
+++ b/src/mainboard/artecgroup/dbe61/Kconfig
@@ -24,8 +24,4 @@ config IRQ_SLOT_COUNT
 	int
 	default 3
 
-#config RAMBASE
-#	hex
-#	default 0x4000
-
 endif # BOARD_ARTECGROUP_DBE61
diff --git a/src/mainboard/digitallogic/msm800sev/Kconfig b/src/mainboard/digitallogic/msm800sev/Kconfig
index 6172b26219..f98101b03a 100644
--- a/src/mainboard/digitallogic/msm800sev/Kconfig
+++ b/src/mainboard/digitallogic/msm800sev/Kconfig
@@ -25,8 +25,4 @@ config IRQ_SLOT_COUNT
 	int
 	default 9
 
-config RAMBASE
-	hex
-	default 0x4000
-
 endif # BOARD_DIGITALLOGIC_MSM800SEV
diff --git a/src/mainboard/iei/pcisa-lx-800-r10/Kconfig b/src/mainboard/iei/pcisa-lx-800-r10/Kconfig
index 91766050f1..7bef792a0b 100644
--- a/src/mainboard/iei/pcisa-lx-800-r10/Kconfig
+++ b/src/mainboard/iei/pcisa-lx-800-r10/Kconfig
@@ -24,8 +24,4 @@ config IRQ_SLOT_COUNT
 	int
 	default 9
 
-config RAMBASE
-	hex
-	default 0x4000
-
 endif # BOARD_IEI_PCISA_LX_800_R10
diff --git a/src/mainboard/lippert/roadrunner-lx/Kconfig b/src/mainboard/lippert/roadrunner-lx/Kconfig
index fa140acfce..ef6171fa50 100644
--- a/src/mainboard/lippert/roadrunner-lx/Kconfig
+++ b/src/mainboard/lippert/roadrunner-lx/Kconfig
@@ -27,10 +27,6 @@ config IRQ_SLOT_COUNT
 	int
 	default 7
 
-config RAMBASE
-	hex
-	default 0x4000
-
 config ONBOARD_UARTS_RS485
 	bool "Switch on-board serial ports to RS485"
 	default n
diff --git a/src/mainboard/lippert/spacerunner-lx/Kconfig b/src/mainboard/lippert/spacerunner-lx/Kconfig
index a7e0eba22b..89a52ae1a6 100644
--- a/src/mainboard/lippert/spacerunner-lx/Kconfig
+++ b/src/mainboard/lippert/spacerunner-lx/Kconfig
@@ -28,10 +28,6 @@ config IRQ_SLOT_COUNT
 	int
 	default 7
 
-config RAMBASE
-	hex
-	default 0x4000
-
 config ONBOARD_UARTS_RS485
 	bool "Switch on-board serial ports to RS485"
 	default n
diff --git a/src/mainboard/pcengines/alix1c/Kconfig b/src/mainboard/pcengines/alix1c/Kconfig
index d6edad0479..395df75eb2 100644
--- a/src/mainboard/pcengines/alix1c/Kconfig
+++ b/src/mainboard/pcengines/alix1c/Kconfig
@@ -25,8 +25,4 @@ config IRQ_SLOT_COUNT
 	int
 	default 5
 
-config RAMBASE
-	hex
-	default 0x4000
-
 endif # BOARD_PCENGINES_ALIX1C
diff --git a/src/mainboard/pcengines/alix2d/Kconfig b/src/mainboard/pcengines/alix2d/Kconfig
index f0997fda5e..bd363f3407 100644
--- a/src/mainboard/pcengines/alix2d/Kconfig
+++ b/src/mainboard/pcengines/alix2d/Kconfig
@@ -24,8 +24,4 @@ config IRQ_SLOT_COUNT
 	int
 	default 7
 
-config RAMBASE
-	hex
-	default 0x4000
-
 endif # BOARD_PCENGINES_ALIX2D
diff --git a/src/mainboard/traverse/geos/Kconfig b/src/mainboard/traverse/geos/Kconfig
index d3c643a2c8..c1d1af41a0 100644
--- a/src/mainboard/traverse/geos/Kconfig
+++ b/src/mainboard/traverse/geos/Kconfig
@@ -24,8 +24,4 @@ config IRQ_SLOT_COUNT
 	int
 	default 6
 
-config RAMBASE
-	hex
-	default 0x4000
-
 endif # BOARD_TRAVERSE_GEOS
diff --git a/src/mainboard/winent/pl6064/Kconfig b/src/mainboard/winent/pl6064/Kconfig
index 142721441a..df6db01198 100644
--- a/src/mainboard/winent/pl6064/Kconfig
+++ b/src/mainboard/winent/pl6064/Kconfig
@@ -25,8 +25,4 @@ config IRQ_SLOT_COUNT
 	int
 	default 7
 
-config RAMBASE
-	hex
-	default 0x4000
-
 endif # BOARD_WINENT_PL6064