x86: Enable mrc cache for bayleybay and minnowmax

Now that we have added MRC cache for Intel FSP and BayTrail codes,
enable it for all BayTrail boards (Bayley Bay and Minnow Max).

Note it turns out that FSP for Intel Atom E6xx does not produce
the HOB for NV storage, so we don't have such functionality on
Intel Crown Bay board.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>

arch/x86/dts/bayleybay.dts

@@ -68,9 +68,15 @@
 		#size-cells = <0>;
 		compatible = "intel,ich-spi";
 		spi-flash@0 {
+			#address-cells = <1>;
+			#size-cells = <1>;
 			reg = <0>;
 			compatible = "winbond,w25q64dw", "spi-flash";
 			memory-map = <0xff800000 0x00800000>;
+			rw-mrc-cache {
+				label = "rw-mrc-cache";
+				reg = <0x006e0000 0x00010000>;
+			};
 		};
 	};
 

arch/x86/dts/minnowmax.dts

@@ -273,9 +273,15 @@
 		#size-cells = <0>;
 		compatible = "intel,ich-spi";
 		spi-flash@0 {
+			#address-cells = <1>;
+			#size-cells = <1>;
 			reg = <0>;
 			compatible = "stmicro,n25q064a", "spi-flash";
 			memory-map = <0xff800000 0x00800000>;
+			rw-mrc-cache {
+				label = "rw-mrc-cache";
+				reg = <0x006f0000 0x00010000>;
+			};
 		};
 	};
 

configs/bayleybay_defconfig

@@ -3,6 +3,7 @@ CONFIG_VENDOR_INTEL=y
 CONFIG_DEFAULT_DEVICE_TREE="bayleybay"
 CONFIG_TARGET_BAYLEYBAY=y
 CONFIG_HAVE_INTEL_ME=y
+CONFIG_ENABLE_MRC_CACHE=y
 CONFIG_SMP=y
 CONFIG_HAVE_VGA_BIOS=y
 CONFIG_VGA_BIOS_ADDR=0xfffa0000

configs/minnowmax_defconfig

@@ -3,6 +3,7 @@ CONFIG_VENDOR_INTEL=y
 CONFIG_DEFAULT_DEVICE_TREE="minnowmax"
 CONFIG_TARGET_MINNOWMAX=y
 CONFIG_HAVE_INTEL_ME=y
+CONFIG_ENABLE_MRC_CACHE=y
 CONFIG_SMP=y
 CONFIG_HAVE_VGA_BIOS=y
 CONFIG_GENERATE_PIRQ_TABLE=y

doc/README.x86

@@ -190,6 +190,7 @@ Offset   Description         Controlling config
 000000   descriptor.bin      Hard-coded to 0 in ifdtool
 001000   me.bin              Set by the descriptor
 500000   <spare>
+6f0000   MRC cache           CONFIG_ENABLE_MRC_CACHE
 700000   u-boot-dtb.bin      CONFIG_SYS_TEXT_BASE
 790000   vga.bin             CONFIG_VGA_BIOS_ADDR
 7c0000   fsp.bin             CONFIG_FSP_ADDR