powerpc/86xx: Basic flash support for GE SBC610

Support for the SBC610 VPX Single Board Computer from GE (PowerPC MPC8641D).

This patch adds basic support for the on-board flash.
Signed-off-by: NMartyn Welch <martyn.welch@gefanuc.com>
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>

arch/powerpc/boot/dts/gef_sbc610.dts

@@ -75,14 +75,48 @@
 		interrupts = <19 2>;
 		interrupt-parent = <&mpic>;
 
-		ranges = <0 0 0xff000000 0x01000000     // 16MB Boot flash
-			  1 0 0xe8000000 0x08000000     // Paged Flash 0
-			  2 0 0xe0000000 0x08000000     // Paged Flash 1
-			  3 0 0xfc100000 0x00020000     // NVRAM
-			  4 0 0xfc000000 0x00008000     // FPGA
-			  5 0 0xfc008000 0x00008000     // AFIX FPGA
-			  6 0 0xfd000000 0x00800000     // IO FPGA (8-bit)
-			  7 0 0xfd800000 0x00800000>;   // IO FPGA (32-bit)
+		ranges = <0 0 0xff000000 0x01000000	// 16MB Boot flash
+			  1 0 0xe8000000 0x08000000	// Paged Flash 0
+			  2 0 0xe0000000 0x08000000	// Paged Flash 1
+			  3 0 0xfc100000 0x00020000	// NVRAM
+			  4 0 0xfc000000 0x00008000	// FPGA
+			  5 0 0xfc008000 0x00008000	// AFIX FPGA
+			  6 0 0xfd000000 0x00800000	// IO FPGA (8-bit)
+			  7 0 0xfd800000 0x00800000>;	// IO FPGA (32-bit)
+
+		/* flash@0,0 is a mirror of part of the memory in flash@1,0
+		flash@0,0 {
+			compatible = "gef,sbc610-firmware-mirror", "cfi-flash";
+			reg = <0x0 0x0 0x1000000>;
+			bank-width = <4>;
+			device-width = <2>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			partition@0 {
+				label = "firmware";
+				reg = <0x0 0x1000000>;
+				read-only;
+			};
+		};
+		*/
+
+		flash@1,0 {
+			compatible = "gef,sbc610-paged-flash", "cfi-flash";
+			reg = <0x1 0x0 0x8000000>;
+			bank-width = <4>;
+			device-width = <2>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			partition@0 {
+				label = "user";
+				reg = <0x0 0x7800000>;
+			};
+			partition@7800000 {
+				label = "firmware";
+				reg = <0x7800000 0x800000>;
+				read-only;
+			};
+		};
 
 		nvram@3,0 {
 			device_type = "nvram";

arch/powerpc/configs/86xx/gef_sbc610_defconfig

@@ -651,7 +651,7 @@ CONFIG_MTD_CONCAT=y
 CONFIG_MTD_PARTITIONS=y
 # CONFIG_MTD_REDBOOT_PARTS is not set
 # CONFIG_MTD_CMDLINE_PARTS is not set
-# CONFIG_MTD_OF_PARTS is not set
+CONFIG_MTD_OF_PARTS=y
 # CONFIG_MTD_AR7_PARTS is not set
 
 #
@@ -671,13 +671,9 @@ CONFIG_MTD_BLOCK=y
 # RAM/ROM/Flash chip drivers
 #
 CONFIG_MTD_CFI=y
-# CONFIG_MTD_JEDECPROBE is not set
+CONFIG_MTD_JEDECPROBE=y
 CONFIG_MTD_GEN_PROBE=y
-CONFIG_MTD_CFI_ADV_OPTIONS=y
-# CONFIG_MTD_CFI_NOSWAP is not set
-# CONFIG_MTD_CFI_BE_BYTE_SWAP is not set
-CONFIG_MTD_CFI_LE_BYTE_SWAP=y
-# CONFIG_MTD_CFI_GEOMETRY is not set
+# CONFIG_MTD_CFI_ADV_OPTIONS is not set
 CONFIG_MTD_MAP_BANK_WIDTH_1=y
 CONFIG_MTD_MAP_BANK_WIDTH_2=y
 CONFIG_MTD_MAP_BANK_WIDTH_4=y
@@ -688,7 +684,6 @@ CONFIG_MTD_CFI_I1=y
 CONFIG_MTD_CFI_I2=y
 # CONFIG_MTD_CFI_I4 is not set
 # CONFIG_MTD_CFI_I8 is not set
-# CONFIG_MTD_OTP is not set
 CONFIG_MTD_CFI_INTELEXT=y
 CONFIG_MTD_CFI_AMDSTD=y
 # CONFIG_MTD_CFI_STAA is not set
@@ -1729,7 +1724,17 @@ CONFIG_MISC_FILESYSTEMS=y
 # CONFIG_BEFS_FS is not set
 # CONFIG_BFS_FS is not set
 # CONFIG_EFS_FS is not set
-# CONFIG_JFFS2_FS is not set
+CONFIG_JFFS2_FS=y
+CONFIG_JFFS2_FS_DEBUG=0
+CONFIG_JFFS2_FS_WRITEBUFFER=y
+# CONFIG_JFFS2_FS_WBUF_VERIFY is not set
+# CONFIG_JFFS2_SUMMARY is not set
+# CONFIG_JFFS2_FS_XATTR is not set
+# CONFIG_JFFS2_COMPRESSION_OPTIONS is not set
+CONFIG_JFFS2_ZLIB=y
+# CONFIG_JFFS2_LZO is not set
+CONFIG_JFFS2_RTIME=y
+# CONFIG_JFFS2_RUBIN is not set
 # CONFIG_CRAMFS is not set
 # CONFIG_SQUASHFS is not set
 # CONFIG_VXFS_FS is not set