This adds rules for generating a squashfs image from the root
filesystem via genimage.
---
config/images/squashfs.config | 8 ++++
platforms/image-root-squashfs.in | 72 ++++++++++++++++++++++++++++++++
rules/image-root-squashfs.make | 39 +++++++++++++++++
3 files changed, 119 insertions(+)
create mode 100644 config/images/squashfs.config
create mode 100644 platforms/image-root-squashfs.in
create mode 100644 rules/image-root-squashfs.make
diff --git a/config/images/squashfs.config b/config/images/squashfs.config
new file mode 100644
index 000000000..605fcb7a5
--- /dev/null
+++ b/config/images/squashfs.config
@@ -0,0 +1,8 @@
+image @IMAGE@ {
+ squashfs {
+ extraargs = "@EXTRA_ARGS@"
+ compression = @COMPRESSION_MODE@
+ block-size = @BLOCK_SIZE@
+ }
+ name = "root"
+}
diff --git a/platforms/image-root-squashfs.in b/platforms/image-root-squashfs.in
new file mode 100644
index 000000000..4020c50eb
--- /dev/null
+++ b/platforms/image-root-squashfs.in
@@ -0,0 +1,72 @@
+## SECTION=image
+
+menuconfig IMAGE_ROOT_SQUASHFS
+ tristate
+ select HOST_GENIMAGE
+ select HOST_SQUASHFS_TOOLS
+ select IMAGE_ROOT_TGZ
+ prompt "Generate images/root.squashfs "
+ help
+ Build squashfs images of the root filesystem. This image can be stored
+ linearly into target's flash device at the start of the desired
+ partition. You should erase the whole partition first if the image
+ is smaller than partition's size. If not, garbage data in the
remaining
+ space could confuse the filesystem driver.
+
+if IMAGE_ROOT_SQUASHFS
+
+choice
+ prompt "squashfs compression mode"
+ help
+ Select your prefered compression mode.
+
+ config IMAGE_ROOT_SQUASHFS_COMPRESSION_MODE_GZIP
+ bool "gzip"
+ help
+ Select your prefered compression mode.
+
+ config IMAGE_ROOT_SQUASHFS_COMPRESSION_MODE_LZMA
+ bool "lzma"
+ help
+ Select your prefered compression mode.
+
+ config IMAGE_ROOT_SQUASHFS_COMPRESSION_MODE_LZO
+ bool "lzo"
+ help
+ Select your prefered compression mode.
+
+ config IMAGE_ROOT_SQUASHFS_COMPRESSION_MODE_LZ4
+ bool "lz4"
+ help
+ Select your prefered compression mode.
+
+ config IMAGE_ROOT_SQUASHFS_COMPRESSION_MODE_XZ
+ bool "xz"
+ help
+ Select your prefered compression mode.
+
+endchoice
+
+config IMAGE_ROOT_SQUASHFS_COMPRESSION_MODE
+ string
+ default "gzip" if IMAGE_ROOT_SQUASHFS_COMPRESSION_MODE_GZIP
+ default "lzma" if IMAGE_ROOT_SQUASHFS_COMPRESSION_MODE_LZMA
+ default "lzo" if IMAGE_ROOT_SQUASHFS_COMPRESSION_MODE_LZO
+ default "lz4" if IMAGE_ROOT_SQUASHFS_COMPRESSION_MODE_LZ4
+ default "xz" if IMAGE_ROOT_SQUASHFS_COMPRESSION_MODE_XZ
+
+config IMAGE_ROOT_SQUASHFS_BLOCK_SIZE
+ string
+ default "128k"
+ prompt "Block size"
+ help
+ This allows the compression data block size to be selected, both "K"
and "M"
+ postfixes are supported.
+
+config IMAGE_ROOT_SQUASHFS_EXTRA_ARGS
+ string
+ prompt "extra arguments passed to mksquashfs"
+ help
+ You can add extra arguments for mksquashfs here
+
+endif
diff --git a/rules/image-root-squashfs.make b/rules/image-root-squashfs.make
new file mode 100644
index 000000000..204e5434f
--- /dev/null
+++ b/rules/image-root-squashfs.make
@@ -0,0 +1,39 @@
+# -*-makefile-*-
+#
+# Copyright (C) 2018 by Florian Bäuerle <florian.baeue...@allegion.com>
+#
+# See CREDITS for details about who has contributed to this project.
+#
+# For further information about the PTXdist project and license conditions
+# see the README file.
+#
+
+#
+# We provide this package
+#
+IMAGE_PACKAGES-$(PTXCONF_IMAGE_ROOT_SQUASHFS) += image-root-squashfs
+
+#
+# Paths and names
+#
+IMAGE_ROOT_SQUASHFS := image-root-squashfs
+IMAGE_ROOT_SQUASHFS_DIR := $(BUILDDIR)/$(IMAGE_ROOT_SQUASHFS)
+IMAGE_ROOT_SQUASHFS_IMAGE := $(IMAGEDIR)/root.squashfs
+IMAGE_ROOT_SQUASHFS_FILES := $(IMAGEDIR)/root.tgz
+IMAGE_ROOT_SQUASHFS_CONFIG := squashfs.config
+
+# ----------------------------------------------------------------------------
+# Image
+# ----------------------------------------------------------------------------
+
+IMAGE_ROOT_SQUASHFS_ENV := \
+ EXTRA_ARGS=$(PTXCONF_IMAGE_ROOT_SQUASHFS_EXTRA_ARGS) \
+ COMPRESSION_MODE=$(PTXCONF_IMAGE_ROOT_SQUASHFS_COMPRESSION_MODE) \
+ BLOCK_SIZE=$(PTXCONF_IMAGE_ROOT_SQUASHFS_BLOCK_SIZE)
+
+$(IMAGE_ROOT_SQUASHFS_IMAGE):
+ @$(call targetinfo)
+ @$(call image/genimage, IMAGE_ROOT_SQUASHFS)
+ @$(call finish)
+
+# vim: syntax=make
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