bcm4908: build bootfs image per-SoC

In theory we could have just 1 bootfs image for all devices as each
device has its own entry in the "configurations" node. It doesn't work
well with default configuration though.

If something goes wrong U-Boot SPL can be interrupted (by pressing A) to
enter its minimalistic menu. It allows ignoring boardid. In such case
bootfs default configuration is used.

For above reason each SoC family (BCM4908, BCM4912) should have its own
bootfs built. It allows each of them to have working default
configuration.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
(cherry picked from commit 6ae2f7ff4737ec8dbec026fc6c02f7d1850b521c)

4 files changed, 92 insertions, 59 deletions

diff --git a/target/linux/bcm4908/image/Makefile b/target/linux/bcm4908/image/Makefile
index 91b48291bc..385556fc00 100644
--- a/target/linux/bcm4908/image/Makefile
+++ b/target/linux/bcm4908/image/Makefile
@@ -5,19 +5,20 @@ 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
+DEVICE_VARS += SOC
 
 define Image/Prepare
-	cp bootfs-generic.its $(KDIR)/
-	sed -i "s=\$$$${images_dir}=$(STAGING_DIR_IMAGE)=" $(KDIR)/bootfs-generic.its
-	sed -i "s=\$$$${dts_dir}=$(DTS_DIR)=" $(KDIR)/bootfs-generic.its
+	cp bootfs*.its* $(KDIR)/
+	sed -i "s=\$$$${images_dir}=$(STAGING_DIR_IMAGE)=" $(KDIR)/bootfs*.its*
+	sed -i "s=\$$$${dts_dir}=$(DTS_DIR)=" $(KDIR)/bootfs*.its*
 endef
 
 define Build/bootfs
 	cat $@ | $(STAGING_DIR_HOST)/bin/lzma e -eos -si -so > $@.tmp
 	mv $@.tmp $@
-	sed -i "s=\$${kernel}=$@=" $(KDIR)/bootfs-generic.its
-	PATH=$(LINUX_DIR)/scripts/dtc:$(PATH) mkimage -f $(KDIR)/bootfs-generic.its $(KDIR)/bootfs-generic.itb
+	sed -i "s=\$${kernel}=$@=" $(KDIR)/bootfs*.its*
+	PATH=$(LINUX_DIR)/scripts/dtc:$(PATH) mkimage -f $(KDIR)/bootfs-bcm4908.its $(KDIR)/bootfs-bcm4908.itb
+	PATH=$(LINUX_DIR)/scripts/dtc:$(PATH) mkimage -f $(KDIR)/bootfs-bcm4912.its $(KDIR)/bootfs-bcm4912.itb
 endef
 
 define Build/bcm4908asus
@@ -54,8 +55,8 @@ endef
 
 define Build/pkgtb
 	mv $@ $@.rootfs
-	cp $(PKGTB_ITS) $@.its
-	sed -i "s=\$${bootfs}=$(KDIR)/bootfs-generic.itb=" $@.its
+	cp pkgtb-$(SOC).its $@.its
+	sed -i "s=\$${bootfs}=$(KDIR)/bootfs-$(SOC).itb=" $@.its
 	sed -i "s=\$${rootfs}=$@.rootfs=" $@.its
 	PATH=$(LINUX_DIR)/scripts/dtc:$(PATH) mkimage -f $@.its $@
 endef
@@ -119,7 +120,7 @@ endef
 define Device/netgear_raxe500
   DEVICE_MODEL := RAXE500
   $(Device/netgear)
-  PKGTB_ITS := pkgtb-bcm4908.its
+  SOC := bcm4908
   NETGEAR_BOARD_ID := U12H449T00_NETGEAR
 endef
 # TARGET_DEVICES += netgear_raxe500
diff --git a/target/linux/bcm4908/image/bootfs-bcm4908.its b/target/linux/bcm4908/image/bootfs-bcm4908.its
new file mode 100644
index 0000000000..b80cbd529e
--- /dev/null
+++ b/target/linux/bcm4908/image/bootfs-bcm4908.its
@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+/include/ "bootfs.itsi"
+
+/ {
+	images {
+		uboot {
+			data = /incbin/("${images_dir}/u-boot/u-boot-nodtb.bin");
+		};
+
+		fdt_uboot {
+			data = /incbin/("${images_dir}/u-boot/u-boot.dtb");
+		};
+
+		fdt_uboot_RAX220 {
+			description = "dtb";
+			data = /incbin/("${images_dir}/u-boot/RAX220.dtb");
+			type = "flat_dt";
+			compression = "none";
+
+			hash-1 {
+				algo = "sha256";
+			};
+		};
+
+		fdt_linux_RAX220 {
+			description = "dtb";
+			data = /incbin/("${dts_dir}/broadcom/bcm4908/bcm4908-netgear-raxe500.dtb");
+			arch = "arm64";
+			type = "flat_dt";
+			compression = "none";
+		};
+	};
+
+	configurations {
+		conf_ub_RAX220 {
+			description = "RAX220";
+			fdt = "fdt_uboot_RAX220";
+			loadables = "atf", "uboot";
+		};
+
+		conf_lx_RAX220 {
+			description = "BRCM 63xxx linux";
+			kernel = "kernel";
+			fdt = "fdt_linux_RAX220";
+		};
+	};
+};
diff --git a/target/linux/bcm4908/image/bootfs-bcm4912.its b/target/linux/bcm4908/image/bootfs-bcm4912.its
new file mode 100644
index 0000000000..7c91144a18
--- /dev/null
+++ b/target/linux/bcm4908/image/bootfs-bcm4912.its
@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+/include/ "bootfs.itsi"
+
+/ {
+	images {
+		uboot {
+			data = /incbin/("${images_dir}/u-boot/u-boot-nodtb.bin");
+		};
+
+		fdt_uboot {
+			data = /incbin/("${images_dir}/u-boot/u-boot.dtb");
+		};
+
+		fdt_GTAX6000 {
+			description = "dtb";
+			data = /incbin/("${images_dir}/u-boot/GTAX6000.dtb");
+			type = "flat_dt";
+			compression = "none";
+
+			hash-1 {
+				algo = "sha256";
+			};
+		};
+	};
+
+	configurations {
+		conf_ub_GTAX6000 {
+			description = "GTAX6000";
+			fdt = "fdt_GTAX6000";
+			loadables = "atf", "uboot";
+		};
+	};
+};
diff --git a/target/linux/bcm4908/image/bootfs-generic.its b/target/linux/bcm4908/image/bootfs.itsi
index d32e094eb5..ceaaf10b2b 100644
--- a/target/linux/bcm4908/image/bootfs-generic.its
+++ b/target/linux/bcm4908/image/bootfs.itsi
@@ -24,7 +24,6 @@
 
 		uboot {
 			description = "U-Boot";
-			data = /incbin/("${images_dir}/u-boot/u-boot-nodtb.bin");
 			os = "U-Boot";
 			arch = "arm64";
 			compression = "none";
@@ -53,7 +52,6 @@
 
 		fdt_uboot {
 			description = "dtb";
-			data = /incbin/("${images_dir}/u-boot/u-boot.dtb");
 			type = "flat_dt";
 			compression = "none";
 
@@ -61,36 +59,6 @@
 				algo = "sha256";
 			};
 		};
-
-		fdt_GTAX6000 {
-			description = "dtb";
-			data = /incbin/("${images_dir}/u-boot/GTAX6000.dtb");
-			type = "flat_dt";
-			compression = "none";
-
-			hash-1 {
-				algo = "sha256";
-			};
-		};
-
-		fdt_uboot_RAX220 {
-			description = "dtb";
-			data = /incbin/("${images_dir}/u-boot/RAX220.dtb");
-			type = "flat_dt";
-			compression = "none";
-
-			hash-1 {
-				algo = "sha256";
-			};
-		};
-
-		fdt_linux_RAX220 {
-			description = "dtb";
-			data = /incbin/("${dts_dir}/broadcom/bcm4908/bcm4908-netgear-raxe500.dtb");
-			arch = "arm64";
-			type = "flat_dt";
-			compression = "none";
-		};
 	};
 
 	configurations {
@@ -101,23 +69,5 @@
 			fdt = "fdt_uboot";
 			loadables = "atf", "uboot";
 		};
-
-		conf_ub_GTAX6000 {
-			description = "GTAX6000";
-			fdt = "fdt_GTAX6000";
-			loadables = "atf", "uboot";
-		};
-
-		conf_ub_RAX220 {
-			description = "RAX220";
-			fdt = "fdt_uboot_RAX220";
-			loadables = "atf", "uboot";
-		};
-
-		conf_lx_RAX220 {
-			description = "BRCM 63xxx linux";
-			kernel = "kernel";
-			fdt = "fdt_linux_RAX220";
-		};
 	};
 };