boot-wrapper-aarch64: new package

The boot wrapper contains both a minimal bootloader and a tool to
generate an image suitable for execution by the AArch64 software
simulator. The image generated embeds the minimal bootloader, the
kernel image, the Device Tree Blob and the kernel command line.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

diff --git a/boot/Config.in b/boot/Config.in
index a55139be13380835bbf1ca2d60cb772b9668150d..eb5f7cd67b4785bec09d4d9656e9e117737f8abd 100644 (file)
--- a/boot/Config.in
+++ b/boot/Config.in
@@ -4,6 +4,7 @@ source "boot/at91bootstrap/Config.in"
 source "boot/at91bootstrap3/Config.in"
 source "boot/at91dataflashboot/Config.in"
 source "boot/barebox/Config.in"
+source "boot/boot-wrapper-aarch64/Config.in"
 source "boot/grub/Config.in"
 source "boot/lpc32xxcdl/Config.in"
 source "boot/mxs-bootlets/Config.in"

diff --git a/boot/boot-wrapper-aarch64/Config.in b/boot/boot-wrapper-aarch64/Config.in
new file mode 100644 (file)
index 0000000..6546862
--- /dev/null
+++ b/boot/boot-wrapper-aarch64/Config.in
@@ -0,0 +1,31 @@
+config BR2_TARGET_BOOT_WRAPPER_AARCH64
+       bool "boot-wrapper-aarch64"
+       depends on BR2_aarch64
+       depends on BR2_LINUX_KERNEL
+       help
+         The boot-wrapper-aarch64 is a small bootloader that makes it
+         possible to start an Aarch64 kernel inside the available
+         software simulators for the Aarch64 architecture.
+
+         git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/boot-wrapper-aarch64.git
+
+if BR2_TARGET_BOOT_WRAPPER_AARCH64
+
+config BR2_TARGET_BOOT_WRAPPER_AARCH64_DTS
+       string "Device Tree Source name"
+       default ""
+       help
+         Name of the Device Tree Source file to use to generate the
+         Device Tree Blob that will be embedded in the image
+         generated by the boot wrapper. Valid names are the .dts
+         files from arch/arm64/boot/dts/ in the kernel source
+         tree. The name must be specified without the .dts suffix.
+
+config BR2_TARGET_BOOT_WRAPPER_AARCH64_BOOTARGS
+       string "Kernel bootargs"
+       default ""
+       help
+         Kernel bootargs to embed inside the image generated by the
+         boot wrapper.
+
+endif

diff --git a/boot/boot-wrapper-aarch64/boot-wrapper-aarch64.mk b/boot/boot-wrapper-aarch64/boot-wrapper-aarch64.mk
new file mode 100644 (file)
index 0000000..25c6bed
--- /dev/null
+++ b/boot/boot-wrapper-aarch64/boot-wrapper-aarch64.mk
@@ -0,0 +1,29 @@
+#############################################################
+#
+# boot-wrapper-aarch64
+#
+#############################################################
+
+BOOT_WRAPPER_AARCH64_VERSION        = 26b62f586020fd998c6efd43db657eaafeec14da
+BOOT_WRAPPER_AARCH64_SITE           = git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/boot-wrapper-aarch64.git
+BOOT_WRAPPER_AARCH64_LICENSE        = BSD3c
+BOOT_WRAPPER_AARCH64_LICENSE_FILES  = LICENSE.txt
+BOOT_WRAPPER_AARCH64_DEPENDENCIES   = linux
+BOOT_WRAPPER_AARCH64_INSTALL_IMAGES = YES
+
+BOOT_WRAPPER_AARCH64_DTS = $(call qstrip,$(BR2_TARGET_BOOT_WRAPPER_AARCH64_DTS))
+
+define BOOT_WRAPPER_AARCH64_BUILD_CMDS
+       $(MAKE) \
+               KERNEL=$(BINARIES_DIR)/Image \
+               DTC=$(LINUX_DIR)/scripts/dtc/dtc \
+               FDT_SRC=$(LINUX_DIR)/arch/arm64/boot/dts/$(BOOT_WRAPPER_AARCH64_DTS).dts \
+               CROSS_COMPILE="$(CCACHE) $(TARGET_CROSS)" \
+               BOOTARGS='$(BR2_TARGET_BOOT_WRAPPER_AARCH64_BOOTARGS)' -C $(@D)
+endef
+
+define BOOT_WRAPPER_AARCH64_INSTALL_IMAGES_CMDS
+       cp $(@D)/linux-system.axf $(BINARIES_DIR)
+endef
+
+$(eval $(generic-package))