mediatek: mt7622: add spi-nand support for bananapi bpi-r64

Some of bpi-r64 boards have serial NAND attached to SPI bus.
Add SD card image support for installing openwrt to it.
Default to nand upgrade if root device is not mmc block device.

Separate preloader and uboot images for snand are generated.

Signed-off-by: Oskari Lemmela <[email protected]>

target/linux/mediatek/image/mt7622.mk

@@ -76,9 +76,11 @@ define Device/bananapi_bpi-r64
   DEVICE_DTS := mt7622-bananapi-bpi-r64
   DEVICE_DTS_OVERLAY := mt7622-bananapi-bpi-r64-pcie1 mt7622-bananapi-bpi-r64-sata
   DEVICE_PACKAGES := kmod-ata-ahci-mtk kmod-btmtkuart kmod-usb3 e2fsprogs mkf2fs f2fsck
-  ARTIFACTS := sdcard.img.gz
+  ARTIFACTS := sdcard.img.gz snand-preloader.bin snand-bl31-uboot.fip
   IMAGES := sysupgrade.itb
   KERNEL_INITRAMFS_SUFFIX := -recovery.itb
+  ARTIFACT/snand-preloader.bin	:= bl2 snand-2ddr
+  ARTIFACT/snand-bl31-uboot.fip	:= bl31-uboot bananapi_bpi-r64-snand
   ARTIFACT/sdcard.img.gz	:= mt7622-gpt sdmmc |\
 				   pad-to 512k | bl2 sdmmc-2ddr |\
 				   pad-to 2048k | bl31-uboot bananapi_bpi-r64-sdmmc |\
@@ -86,6 +88,8 @@ define Device/bananapi_bpi-r64
 				   pad-to 38912k | mt7622-gpt emmc |\
 				   pad-to 39424k | bl2 emmc-2ddr |\
 				   pad-to 40960k | bl31-uboot bananapi_bpi-r64-emmc |\
+				   pad-to 43008k | bl2 snand-2ddr |\
+				   pad-to 43520k | bl31-uboot bananapi_bpi-r64-snand |\
 				   pad-to 46080k | append-image squashfs-sysupgrade.itb | gzip
   KERNEL			:= kernel-bin | gzip
   KERNEL_INITRAMFS		:= kernel-bin | lzma | fit lzma $$(DTS_DIR)/$$(DEVICE_DTS).dtb with-initrd | pad-to 128k

target/linux/mediatek/mt7622/base-files/lib/upgrade/platform.sh

@@ -10,16 +10,24 @@ platform_do_upgrade() {
 	bananapi,bpi-r64)
 		export_bootdevice
 		export_partdevice rootdev 0
-		local fitpart=$(get_partition_by_name $rootdev "production")
-		[ "$fitpart" ] || return 1
-		dd if=/dev/zero of=/dev/$fitpart bs=4096 count=1 2>/dev/null
-		blockdev --rereadpt /dev/$rootdev
-		get_image "$1" | dd of=/dev/$fitpart
-		blockdev --rereadpt /dev/$rootdev
-		local datapart=$(get_partition_by_name $rootdev "rootfs_data")
-		[ "$datapart" ] || return 0
-		dd if=/dev/zero of=/dev/$datapart bs=4096 count=1 2>/dev/null
-		echo $datapart > /tmp/sysupgrade.datapart
+		case "$rootdev" in
+		mmc*)
+			local fitpart=$(get_partition_by_name $rootdev "production")
+			[ "$fitpart" ] || return 1
+			dd if=/dev/zero of=/dev/$fitpart bs=4096 count=1 2>/dev/null
+			blockdev --rereadpt /dev/$rootdev
+			get_image "$1" | dd of=/dev/$fitpart
+			blockdev --rereadpt /dev/$rootdev
+			local datapart=$(get_partition_by_name $rootdev "rootfs_data")
+			[ "$datapart" ] || return 0
+			dd if=/dev/zero of=/dev/$datapart bs=4096 count=1 2>/dev/null
+			echo $datapart > /tmp/sysupgrade.datapart
+			;;
+		*)
+			CI_KERNPART="fit"
+			nand_do_upgrade "$1"
+			;;
+		esac
 		;;
 	buffalo,wsr-2533dhp2)
 		local magic="$(get_magic_long "$1")"
@@ -87,7 +95,11 @@ platform_copy_config_mmc() {
 platform_copy_config() {
 	case "$(board_name)" in
 	bananapi,bpi-r64)
-		platform_copy_config_mmc
+		export_bootdevice
+		export_partdevice rootdev 0
+		if echo $rootdev | grep -q mmc; then
+			platform_copy_config_mmc
+		fi
 		;;
 	esac
 }

target/linux/mediatek/patches-5.10/115-dts-bpi64-add-snand-support.patch

@@ -0,0 +1,57 @@
+--- a/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts	2021-03-13 13:46:37.057936814 +0200
++++ b/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts	2021-03-13 13:49:26.957481217 +0200
+@@ -114,7 +114,7 @@
+ };
+ 
+ &bch {
+-	status = "disabled";
++	status = "okay";
+ };
+ 
+ &btif {
+@@ -259,14 +259,40 @@
+ 	status = "disabled";
+ };
+ 
+-&nor_flash {
++&snfi {
+ 	pinctrl-names = "default";
+-	pinctrl-0 = <&spi_nor_pins>;
+-	status = "disabled";
++	pinctrl-0 = <&serial_nand_pins>;
++	status = "okay";
+ 
+-	flash@0 {
+-		compatible = "jedec,spi-nor";
++	snand: spi_nand@0 {
++		#address-cells = <1>;
++		#size-cells = <1>;
++		compatible = "spi-nand";
++		spi-max-frequency = <104000000>;
+ 		reg = <0>;
++
++		partitions {
++			compatible = "fixed-partitions";
++			#address-cells = <1>;
++			#size-cells = <1>;
++
++			partition@0 {
++				label = "bl2";
++				reg = <0x0 0x80000>;
++				read-only;
++			};
++
++			partition@80000 {
++				label = "fip";
++				reg = <0x80000 0x200000>;
++				read-only;
++			};
++
++			partition@280000 {
++				label = "ubi";
++				reg = <0x280000 0x7d80000>;
++			};
++		};
+ 	};
+ };
+ 

target/linux/mediatek/patches-5.4/115-dts-bpi64-add-snand-support.patch

@@ -0,0 +1,57 @@
+--- a/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts	2021-03-13 13:46:37.057936814 +0200
++++ b/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts	2021-03-13 13:49:26.957481217 +0200
+@@ -114,7 +114,7 @@
+ };
+ 
+ &bch {
+-	status = "disabled";
++	status = "okay";
+ };
+ 
+ &btif {
+@@ -259,14 +259,40 @@
+ 	status = "disabled";
+ };
+ 
+-&nor_flash {
++&snfi {
+ 	pinctrl-names = "default";
+-	pinctrl-0 = <&spi_nor_pins>;
+-	status = "disabled";
++	pinctrl-0 = <&serial_nand_pins>;
++	status = "okay";
+ 
+-	flash@0 {
+-		compatible = "jedec,spi-nor";
++	snand: spi_nand@0 {
++		#address-cells = <1>;
++		#size-cells = <1>;
++		compatible = "spi-nand";
++		spi-max-frequency = <104000000>;
+ 		reg = <0>;
++
++		partitions {
++			compatible = "fixed-partitions";
++			#address-cells = <1>;
++			#size-cells = <1>;
++
++			partition@0 {
++				label = "bl2";
++				reg = <0x0 0x80000>;
++				read-only;
++			};
++
++			partition@80000 {
++				label = "fip";
++				reg = <0x80000 0x200000>;
++				read-only;
++			};
++
++			partition@280000 {
++				label = "ubi";
++				reg = <0x280000 0x7d80000>;
++			};
++		};
+ 	};
+ };
+