[PATCH openbmc v6 14/18] initfs: init: add file for base options

[OpenBMC Patches]

From: "Milton D. Miller II" <miltonm at us.ibm.com>

Allow an initrd image to include options for init while still allowing
additional options to come from the kernel command line and/or u-boot
environment variables.

This will allow building a netboot image that can specify to run
from RAM while allowing the command line to initiate debug or skip
copying files from the read-write overlay file system.

Signed-off-by: Milton Miller <miltonm at us.ibm.com>
---
 .../recipes-phosphor/obmc-phosphor-initfs/files/obmc-init.sh   | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/meta-phosphor/common/recipes-phosphor/obmc-phosphor-initfs/files/obmc-init.sh b/meta-phosphor/common/recipes-phosphor/obmc-phosphor-initfs/files/obmc-init.sh
index c37b3d5..70af93d 100644
--- a/meta-phosphor/common/recipes-phosphor/obmc-phosphor-initfs/files/obmc-init.sh
+++ b/meta-phosphor/common/recipes-phosphor/obmc-phosphor-initfs/files/obmc-init.sh
@@ -184,6 +184,7 @@ fsckbase=/sbin/fsck.
 fsck=$fsckbase$rwfst
 fsckopts=-a
 optfile=/run/initramfs/init-options
+optbase=/run/initramfs/init-options-base
 urlfile=/run/initramfs/init-download-url
 update=/run/initramfs/update
 
@@ -192,9 +193,16 @@ then
 	cp /${optfile##*/} $optfile
 fi
 
+if test -e /${optbase##*/}
+then
+	cp /${optbase##*/} $optbase
+else
+	touch $optbase
+fi
+
 if test ! -f $optfile
 then
-	cat /proc/cmdline > $optfile
+	cat /proc/cmdline $optbase > $optfile
 	get_fw_env_var openbmcinit >> $optfile
 	get_fw_env_var openbmconce >> $optfile
 fi
-- 
2.9.0