raspberry-pi3: fix mini.config bootup

- cmdline.txt is not required with full device tree capable kernel
- force 270x option for mkknlimg trailer
- we need ext4 filesystem support in the kernel other filesystems are
  rarely used at the moment
- ATAGS and CMDLINE_FROM_BOOTLOADER not required with device tree capable kernel
- overlay dtb files are renamed to dtbo suffix

mk/rootfs.mk

@@ -39,7 +39,7 @@ ifeq ($(ADK_TARGET_SYSTEM_SHARP_ZAURUS),y)
 BLOCKDEV:=	root=/dev/sda1
 endif
 
-ifeq ($(ADK_TARGET_SYSTEM_RASPBERRY_PI),y)
+ifeq ($(ADK_TARGET_BOARD_BCM28XX),y)
 BLOCKDEV:=	root=/dev/mmcblk0p2
 endif
 

package/bcm28xx-bootloader/Makefile

@@ -34,27 +34,9 @@ CONFIG_STYLE:=          manual
 BUILD_STYLE:=           manual
 INSTALL_STYLE:=         manual
 
-CMDLINE:=root=/dev/mmcblk0p2 rootfstype=ext4 rootwait
-ifeq ($(ADK_APPLIANCE_KODI),y)
-CMDLINE+=consoleblank=0 vt.global_cursor_default=0
-endif
-ifeq ($(ADK_RUNTIME_VERBOSE_KERNEL_SERIAL_ONLY),y)
-CMDLINE+=console=ttyAMA0,$(ADK_RUNTIME_CONSOLE_SERIAL_SPEED)
-endif
-ifeq ($(ADK_RUNTIME_VERBOSE_KERNEL_VGA_ONLY),y)
-CMDLINE+=console=$(ADK_RUNTIME_CONSOLE_VGA_DEVICE)
-endif
-ifeq ($(ADK_RUNTIME_VERBOSE_KERNEL_SERIAL_VGA),y)
-CMDLINE+=console=ttyAMA0,$(ADK_RUNTIME_CONSOLE_SERIAL_SPEED) console=$(ADK_RUNTIME_CONSOLE_VGA_DEVICE)
-endif
-ifeq ($(ADK_RUNTIME_VERBOSE_KERNEL_VGA_SERIAL),y)
-CMDLINE+=console=$(ADK_RUNTIME_CONSOLE_VGA_DEVICE) console=ttyAMA0,$(ADK_RUNTIME_CONSOLE_SERIAL_SPEED)
-endif
-
 do-install:
 	$(INSTALL_DIR) $(IDIR_BCM28XX_BOOTLOADER)/boot
 	$(CP) $(WRKBUILD)/boot/bootcode.bin $(IDIR_BCM28XX_BOOTLOADER)/boot/
-	printf "$(CMDLINE)\n" > $(IDIR_BCM28XX_BOOTLOADER)/boot/cmdline.txt
 	printf "kernel=kernel\n" > $(IDIR_BCM28XX_BOOTLOADER)/boot/config.txt
 	printf "dtparam=audio,i2s,spi,i2c\n" >> \
 		$(IDIR_BCM28XX_BOOTLOADER)/boot/config.txt

scripts/install.sh

@@ -553,8 +553,8 @@ case $target {
 		break
 	done
 	mkdir "$B/"overlays
-	for x in "$fwdir"/overlays/*.dtb; do
-		[[ -e "$x" ]] && cp "$fwdir"/overlays/*.dtb "$B/"overlays
+	for x in "$fwdir"/overlays/*.dtbo; do
+		[[ -e "$x" ]] && cp "$fwdir"/overlays/*.dtbo "$B/"overlays
 		break
 	done
 	umount_fs "$B"

target/arm/Makefile

@@ -138,7 +138,7 @@ endif
 kernel-strip:
 ifeq ($(ADK_TARGET_KERNEL_GIT_REPO_NAME),rpi)
 	@echo adding DT trailer to kernel $(MAKE_TRACE)
-	PATH='$(HOST_PATH)' perl $(LINUX_DIR)/scripts/mkknlimg --dtok $(KERNEL) $(BUILD_DIR)/$(TARGET_KERNEL)
+	PATH='$(HOST_PATH)' perl $(LINUX_DIR)/scripts/mkknlimg --270x --dtok $(KERNEL) $(BUILD_DIR)/$(TARGET_KERNEL)
 else
 	@cp $(KERNEL) $(BUILD_DIR)/$(TARGET_KERNEL)
 endif
@@ -172,8 +172,8 @@ ifeq ($(ADK_TARGET_BOARD_BCM28XX),y)
 	env $(KERNEL_MAKE_ENV) $(MAKE) -C "${LINUX_DIR}" $(KERNEL_MAKE_OPTS) \
 		dtbs $(MAKE_TRACE)
 	mkdir -p $(FW_DIR)/overlays
-	for x in $(LINUX_DIR)/arch/arm/boot/dts/overlays/*.dtb; do \
-		[[ -e "$$x" ]] && cp $(LINUX_DIR)/arch/arm/boot/dts/overlays/*.dtb $(FW_DIR)/overlays; \
+	for x in $(LINUX_DIR)/arch/arm/boot/dts/overlays/*.dtbo; do \
+		[[ -e "$$x" ]] && cp $(LINUX_DIR)/arch/arm/boot/dts/overlays/*.dtbo $(FW_DIR)/overlays; \
 		break; \
 	done
 endif

target/config/Config.in.rootfs

@@ -145,16 +145,18 @@ config ADK_TARGET_ROOTFS_INITRAMFSARCHIVE
 	  Use this option if your planning to create a initramfs.
 
 config ADK_TARGET_ROOTFS_ARCHIVE
-	bool "Archive usable for different filesystems"
+	bool "Archive usable for ext4 filesystems"
 	select ADK_HOST_NEED_GENEXT2FS if ADK_TARGET_QEMU || ADK_TARGET_VBOX
-	select ADK_KERNEL_EXT2_FS if ADK_TARGET_QEMU || ADK_TARGET_VBOX
-	select ADK_TARGET_QEMU_WITH_BLOCK
+	select ADK_KERNEL_EXT4_FS
+	select ADK_TARGET_QEMU_WITH_BLOCK if ADK_TARGET_QEMU
 	depends on !ADK_TARGET_SIM \
 		&& !ADK_TARGET_ARCH_NDS32 \
 		&& !ADK_TARGET_SYSTEM_QEMU_M68K_MCF5208 \
 		&& !ADK_TARGET_SYSTEM_QEMU_METAG
 	help
-	  Use this option if your root filesystem is ext2/ext3/ext4/xfs.
+	  Use this option if your root filesystem is ext4 and you use 
+	  for example install.sh to install firmware on a block device
+	  connected to your development machine.
 
 config ADK_TARGET_ROOTFS_GENIMAGE
 	bool "Create a disk image for the target"