firmware-utils: mkdlinkfw: add kernel image offset

Some boards with JBOOT have partiton between bootloader
and kernel image. This patch add possibility to change kernel
partition start address.

Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>

target/linux/ramips/image/Makefile

@@ -114,6 +114,7 @@ define Build/mkdlinkfw
 		-k $(IMAGE_KERNEL) \
 		-r $(IMAGE_ROOTFS) \
 		-o $@ \
+		$(if $(DLINK_IMAGE_OFFSET), -O $(DLINK_IMAGE_OFFSET)) \
 		-s $(DLINK_FIRMWARE_SIZE)
 endef
 
@@ -122,6 +123,7 @@ define Build/mkdlinkfw-factory
 		-m $(DLINK_ROM_ID) -f $(DLINK_FAMILY_MEMBER) \
 		-F $@ \
 		-o $@.new \
+		$(if $(DLINK_IMAGE_OFFSET), -O $(DLINK_IMAGE_OFFSET)) \
 		-s $(DLINK_FIRMWARE_SIZE)
 	mv $@.new $@
 endef

target/linux/ramips/image/mt7620.mk

@@ -3,7 +3,7 @@
 #
 
 DEVICE_VARS += TPLINK_FLASHLAYOUT TPLINK_HWID TPLINK_HWREV TPLINK_HWREVADD TPLINK_HVERSION \
-	DLINK_ROM_ID DLINK_FAMILY_MEMBER DLINK_FIRMWARE_SIZE
+	DLINK_ROM_ID DLINK_FAMILY_MEMBER DLINK_FIRMWARE_SIZE DLINK_IMAGE_OFFSET
 
 define Build/elecom-header
 	cp $@ $(KDIR)/v_0.0.0.bin
@@ -60,6 +60,15 @@ define Device/alfa-network_tube-e4g
 endef
 TARGET_DEVICES += alfa-network_tube-e4g
 
+define Device/amit_jboot
+  DLINK_IMAGE_OFFSET := 0x10000
+  KERNEL := $(KERNEL_DTB)
+  IMAGES += factory.bin
+  IMAGE/sysupgrade.bin := mkdlinkfw | pad-rootfs | append-metadata
+  IMAGE/factory.bin := mkdlinkfw | pad-rootfs | mkdlinkfw-factory
+  DEVICE_PACKAGES := jboot-tools kmod-usb2 kmod-usb-ohci
+endef
+
 define Device/Archer
   TPLINK_HWREVADD := 0
   TPLINK_HVERSION := 3
@@ -182,60 +191,46 @@ endef
 TARGET_DEVICES += dir-810l
 
 define Device/dlink_dwr-116-a1
+  $(Device/amit_jboot)
   DTS := DWR-116-A1
   DEVICE_TITLE := D-Link DWR-116 A1/A2
-  DEVICE_PACKAGES := kmod-usb2 kmod-usb-ohci jboot-tools
   DLINK_ROM_ID := DLK6E3803001
   DLINK_FAMILY_MEMBER := 0x6E38
   DLINK_FIRMWARE_SIZE := 0x7E0000
-  KERNEL := $(KERNEL_DTB)
-  IMAGES += factory.bin
-  IMAGE/sysupgrade.bin := mkdlinkfw | pad-rootfs | append-metadata
-  IMAGE/factory.bin := mkdlinkfw | pad-rootfs | mkdlinkfw-factory
 endef
 TARGET_DEVICES += dlink_dwr-116-a1
 
 define Device/dlink_dwr-118-a1
+  $(Device/amit_jboot)
   DTS := DWR-118-A1
   DEVICE_TITLE := D-Link DWR-118 A1
-  DEVICE_PACKAGES := kmod-usb2 kmod-usb-ohci jboot-tools kmod-mt76x0e
+  DEVICE_PACKAGES += kmod-mt76x0e
   DLINK_ROM_ID := DLK6E3811001
   DLINK_FAMILY_MEMBER := 0x6E38
   DLINK_FIRMWARE_SIZE := 0xFE0000
-  KERNEL := $(KERNEL_DTB)
-  IMAGES += factory.bin
-  IMAGE/sysupgrade.bin := mkdlinkfw | pad-rootfs | append-metadata
-  IMAGE/factory.bin := mkdlinkfw | pad-rootfs | mkdlinkfw-factory
 endef
 TARGET_DEVICES += dlink_dwr-118-a1
 
 define Device/dlink_dwr-118-a2
+  $(Device/amit_jboot)
   DTS := DWR-118-A2
   DEVICE_TITLE := D-Link DWR-118 A2
-  DEVICE_PACKAGES := kmod-mt76x2 kmod-usb2 kmod-usb-ohci jboot-tools
+  DEVICE_PACKAGES += kmod-mt76x2
   DLINK_ROM_ID := DLK6E3814001
   DLINK_FAMILY_MEMBER := 0x6E38
   DLINK_FIRMWARE_SIZE := 0xFE0000
-  KERNEL := $(KERNEL_DTB)
-  IMAGES += factory.bin
-  IMAGE/sysupgrade.bin := mkdlinkfw | pad-rootfs | append-metadata
-  IMAGE/factory.bin := mkdlinkfw | pad-rootfs | mkdlinkfw-factory
 endef
 TARGET_DEVICES += dlink_dwr-118-a2
 
 define Device/dlink_dwr-921-c1
+  $(Device/amit_jboot)
   DTS := DWR-921-C1
   IMAGE_SIZE := $(ralink_default_fw_size_16M)
   DEVICE_TITLE := D-Link DWR-921 C1
   DLINK_ROM_ID := DLK6E2414001
   DLINK_FAMILY_MEMBER := 0x6E24
   DLINK_FIRMWARE_SIZE := 0xFE0000
-  KERNEL := $(KERNEL_DTB)
+  DEVICE_PACKAGES += kmod-usb-net-qmi-wwan kmod-usb-serial-option uqmi
-  IMAGES += factory.bin
-  IMAGE/sysupgrade.bin := mkdlinkfw | pad-rootfs | append-metadata
-  IMAGE/factory.bin := mkdlinkfw | pad-rootfs | mkdlinkfw-factory
-  DEVICE_PACKAGES := jboot-tools \
-	kmod-usb2 kmod-usb-net-qmi-wwan kmod-usb-serial-option uqmi
 endef
 TARGET_DEVICES += dlink_dwr-921-c1
 
@@ -248,18 +243,14 @@ endef
 TARGET_DEVICES += dlink_dwr-921-c3
 
 define Device/dlink_dwr-922-e2
+  $(Device/amit_jboot)
   DTS := DWR-922-E2
   IMAGE_SIZE := $(ralink_default_fw_size_16M)
   DEVICE_TITLE := D-Link DWR-922 E2
   DLINK_ROM_ID := DLK6E2414005
   DLINK_FAMILY_MEMBER := 0x6E24
   DLINK_FIRMWARE_SIZE := 0xFE0000
-  KERNEL := $(KERNEL_DTB)
+  DEVICE_PACKAGES += kmod-usb-net-qmi-wwan kmod-usb-serial-option uqmi
-  IMAGES += factory.bin
-  IMAGE/sysupgrade.bin := mkdlinkfw | pad-rootfs | append-metadata
-  IMAGE/factory.bin := mkdlinkfw | pad-rootfs | mkdlinkfw-factory
-  DEVICE_PACKAGES := jboot-tools \
-	kmod-usb2 kmod-usb-net-qmi-wwan kmod-usb-serial-option uqmi
 endef
 TARGET_DEVICES += dlink_dwr-922-e2
 
@@ -430,16 +421,13 @@ endef
 TARGET_DEVICES += microwrt
 
 define Device/lava_lr-25g001
+  $(Device/amit_jboot)
   DTS := LR-25G001
   DEVICE_TITLE := LAVA LR-25G001
   DLINK_ROM_ID := LVA6E3804001
   DLINK_FAMILY_MEMBER := 0x6E38
   DLINK_FIRMWARE_SIZE := 0xFE0000
-  KERNEL := $(KERNEL_DTB)
+  DEVICE_PACKAGES += kmod-mt76x0e
-  IMAGES += factory.bin
-  IMAGE/sysupgrade.bin := mkdlinkfw | pad-rootfs | append-metadata
-  IMAGE/factory.bin := mkdlinkfw | pad-rootfs | mkdlinkfw-factory
-  DEVICE_PACKAGES := jboot-tools kmod-usb2 kmod-usb-ohci kmod-mt76x0e
 endef
 TARGET_DEVICES += lava_lr-25g001
 

tools/firmware-utils/src/mkdlinkfw.c

@@ -99,6 +99,7 @@ struct file_info image_info;
 char *ofname;
 char *progname;
 uint32_t firmware_size;
+uint32_t image_offset;
 uint16_t family_member;
 char *rom_id[12] = { 0 };
 char image_type;
@@ -403,7 +404,7 @@ int fill_sch2(struct sch2_header *header, char *kernel_ptr, char *rootfs_ptr)
 	header->image_crc32 = crc32(0, (uint8_t *) kernel_ptr, kernel_info.file_size);
 	header->start_addr = RAM_ENTRY_ADDR;
 	header->rootfs_addr =
-	    JBOOT_SIZE + STAG_SIZE + SCH2_SIZE + kernel_info.file_size;
+	    image_offset + STAG_SIZE + SCH2_SIZE + kernel_info.file_size;
 	header->rootfs_len = rootfs_info.file_size;
 	header->rootfs_crc32 = crc32(0, (uint8_t *) rootfs_ptr, rootfs_info.file_size);
 	header->header_crc32 = 0;
@@ -446,9 +447,9 @@ int fill_auh(struct auh_header *header, uint32_t length)
 	header->lpvs = AUH_LVPS;
 	header->mbz = 0;
 	header->time_stamp = jboot_timestamp();
-	header->erase_start = JBOOT_SIZE;
+	header->erase_start = image_offset;
 	header->erase_length = firmware_size;
-	header->data_offset = JBOOT_SIZE;
+	header->data_offset = image_offset;
 	header->data_length = length;
 	header->space4 = 0;
 	header->space5 = 0;
@@ -603,11 +604,12 @@ int main(int argc, char *argv[])
 	image_type = SYSUPGRADE;
 	family_member = 0;
 	firmware_size = 0;
+	image_offset = JBOOT_SIZE;
 
 	while (1) {
 		int c;
 
-		c = getopt(argc, argv, "f:F:i:hk:m:o:r:s:");
+		c = getopt(argc, argv, "f:F:i:hk:m:o:O:r:s:");
 		if (c == -1)
 			break;
 
@@ -632,6 +634,9 @@ int main(int argc, char *argv[])
 		case 'r':
 			rootfs_info.file_name = optarg;
 			break;
+		case 'O':
+			sscanf(optarg, "0x%x", &image_offset);
+			break;
 		case 'o':
 			ofname = optarg;
 			break;