bcm4908: continue work on images for U-Boot based devices

It still isn't ready though - more data needs to be added to the bootfs.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
(cherry picked from commit 494c033f9cbad67ea2cee3860894bdfffea65109)

3 files changed, 96 insertions, 0 deletions

diff --git a/target/linux/bcm4908/image/Makefile b/target/linux/bcm4908/image/Makefile
index cbbbcbb526..aa674c0142 100644
--- a/target/linux/bcm4908/image/Makefile
+++ b/target/linux/bcm4908/image/Makefile
@@ -5,9 +5,11 @@ include $(INCLUDE_DIR)/image.mk
 
 DEVICE_VARS += ASUS_PRODUCTID ASUS_BUILD_NO ASUS_FW_REV ASUS_EXT_NO
 DEVICE_VARS += NETGEAR_BOARD_ID NETGEAR_REGION
+DEVICE_VARS += PKGTB_ITS
 
 define Image/Prepare
 	cp bootfs-generic.its $(KDIR)/
+	sed -i "s=\$$$${dts_dir}=$(DTS_DIR)=" $(KDIR)/bootfs-generic.its
 endef
 
 define Build/bootfs
@@ -49,6 +51,14 @@ define Build/bcm4908lzma
 	mv $@.new $@
 endef
 
+define Build/pkgtb
+	mv $@ $@.rootfs
+	cp $(PKGTB_ITS) $@.its
+	sed -i "s=\$${bootfs}=$(KDIR)/bootfs-generic.itb=" $@.its
+	sed -i "s=\$${rootfs}=$@.rootfs=" $@.its
+	PATH=$(LINUX_DIR)/scripts/dtc:$(PATH) mkimage -f $@.its $@
+endef
+
 define Device/Default
   KERNEL := kernel-bin | bcm4908lzma | bcm4908kernel
   KERNEL_DEPENDS = $$(wildcard $(DTS_DIR)/$$(DEVICE_DTS).dts)
diff --git a/target/linux/bcm4908/image/pkgtb-bcm4908.its b/target/linux/bcm4908/image/pkgtb-bcm4908.its
new file mode 100644
index 0000000000..295997184a
--- /dev/null
+++ b/target/linux/bcm4908/image/pkgtb-bcm4908.its
@@ -0,0 +1,43 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+/dts-v1/;
+
+/ {
+	description = "Broadcom image upgrade package tree binary";
+	#address-cells = <1>;
+
+	images {
+		bootfs_4908_a0+ {
+			description = "bootfs";
+			data = /incbin/("${bootfs}");
+			type = "multi";
+			compression = "none";
+
+			hash-1 {
+				algo = "sha256";
+			};
+		};
+
+		nand_squashfs {
+			description = "rootfs";
+			data = /incbin/("${rootfs}");
+			type = "filesystem";
+			compression = "none";
+
+			hash-1 {
+				algo = "sha256";
+			};
+		};
+	};
+
+	configurations {
+		default = "conf_4908_a0+_nand_squashfs";
+
+		conf_4908_a0+_nand_squashfs {
+			description = "Brcm Image Bundle";
+			bootfs = "bootfs_4908_a0+";
+			rootfs = "nand_squashfs";
+			compatible = "flash=nand;chip=4908;rev=a0+;ip=ipv6,ipv4;ddr=ddr3;fstype=squashfs";
+		};
+	};
+};
diff --git a/target/linux/bcm4908/image/pkgtb-bcm4912.its b/target/linux/bcm4908/image/pkgtb-bcm4912.its
new file mode 100644
index 0000000000..113b1278cd
--- /dev/null
+++ b/target/linux/bcm4908/image/pkgtb-bcm4912.its
@@ -0,0 +1,43 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+/dts-v1/;
+
+/ {
+	description = "Broadcom image upgrade package tree binary";
+	#address-cells = <1>;
+
+	images {
+		bootfs_4912_a0+ {
+			description = "bootfs";
+			data = /incbin/("${bootfs}");
+			type = "multi";
+			compression = "none";
+
+			hash-1 {
+				algo = "sha256";
+			};
+		};
+
+		nand_squashfs {
+			description = "rootfs";
+			data = /incbin/("${rootfs}");
+			type = "filesystem";
+			compression = "none";
+
+			hash-1 {
+				algo = "sha256";
+			};
+		};
+	};
+
+	configurations {
+		default = "conf_4912_a0+_nand_squashfs";
+
+		conf_4912_a0+_nand_squashfs {
+			description = "Brcm Image Bundle";
+			bootfs = "bootfs_4912_a0+";
+			rootfs = "nand_squashfs";
+			compatible = "flash=nand;chip=4912;rev=a0+;ip=ipv6,ipv4;ddr=ddr3,ddr4;fstype=squashfs";
+		};
+	};
+};