busybox: add initrd variant

Add a busybox variant that inherits almost all of its support from
the core busybox recipe, but adds configuration values that are
appropriate to be used in an initrd.

In particular:

  - we build busybox statically
  - we enable runlevel and init functionality
  - mdev is always enabled
  - applet install support is enabled

Signed-off-by: Bruce Ashfield <bruce.ashfield@xilinx.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>

2 files changed, 15 insertions, 0 deletions

diff --git a/recipes-core/busybox/busybox-initrd/initrd.cfg b/recipes-core/busybox/busybox-initrd/initrd.cfg
new file mode 100644
index 00000000..9f64c4c6
--- /dev/null
+++ b/recipes-core/busybox/busybox-initrd/initrd.cfg
@@ -0,0 +1,14 @@
+CONFIG_INIT=y
+CNOFIG_FEATURE_UTMP=y
+CONFIG_RUNLEVEL=y
+CONFIG_FEATURE_USE_INITTAB=y
+CONFIG_HALT=y
+CONFIG_POWEROFF=y
+CONFIG_FEATURE_KILL_DELAY=0
+CONFIG_TELINIT_PATH=""
+CONFIG_INIT_TERMINAL_TYPE=""
+
+# CONFIG_FEATURE_SHADOWPASSWDS is not set
+CONFIG_USE_BB_PWD_GRP=y
+
+CONFIG_STATIC=y
diff --git a/recipes-core/busybox/busybox-initrd/runx.cfg b/recipes-core/busybox/busybox-initrd/runx.cfg
new file mode 100644
index 00000000..1f1ac6af
--- /dev/null
+++ b/recipes-core/busybox/busybox-initrd/runx.cfg
@@ -0,0 +1 @@
+CONFIG_FEATURE_INSTALLER=y