initrdscripts: Add the simplest init script

When booting from initramfs, one must provide a /init link.
This one is the simplest one, just forking a shell, allowing
for the smallest initramfs.

2 files changed, 20 insertions, 0 deletions

diff --git a/meta/packages/initrdscripts/files/init-boot.sh b/meta/packages/initrdscripts/files/init-boot.sh
new file mode 100644
index 0000000000..9d804fc3a7
--- /dev/null
+++ b/meta/packages/initrdscripts/files/init-boot.sh
@@ -0,0 +1,8 @@
+#!/bin/sh
+
+mkdir /proc
+mkdir /sys
+mount -t proc proc /proc
+mount -t sysfs sysfs /sys
+
+exec sh
diff --git a/meta/packages/initrdscripts/initramfs-boot_1.0.bb b/meta/packages/initrdscripts/initramfs-boot_1.0.bb
new file mode 100644
index 0000000000..de3f932c8e
--- /dev/null
+++ b/meta/packages/initrdscripts/initramfs-boot_1.0.bb
@@ -0,0 +1,12 @@
+DESCRIPTON = "A live image init script"
+
+SRC_URI = "file://init-boot.sh"
+
+PR = "r0"
+
+do_install() {
+        install -m 0755 ${WORKDIR}/init-boot.sh ${D}/init
+}
+
+PACKAGE_ARCH = "all"
+FILES_${PN} += " /init "