From 61bad300f7f0d0a33a664f0793f21fffec437b5a Mon Sep 17 00:00:00 2001
From: Eric MacDonald <eric.macdonald@windriver.com>
Date: Tue, 16 May 2023 19:31:40 +0000
Subject: [PATCH] Add intel multi-drivers-switch kernel parameter support to
 kickstarts

This update adds support to the Debian kickstarts to search the
install kernel command line for the multi-drivers-switch= option.
If that option is found, then the full option with the specified
version, ex: multi-drivers-switch=2.54 , will be added to the
disk boot kernel command line options.

Test Plan:

PASS: Verify Build and Install SX system
PASS: Unit test of code block function over an install
PASS: Verify if the multi-drivers-switch parameter exists on the
      the node install command line then the same option is
      propagated to the disk boot command line.
PASS: Verify the opposite of the above is true.

Closes-Bug: 2026893
Change-Id: I648b16dbc5aa2a0a7b8368c1b89a5d46418ab1e5
Signed-off-by: Eric MacDonald <eric.macdonald@windriver.com>
---
 kickstart/files/kickstart.cfg | 12 ++++++++++++
 kickstart/files/miniboot.cfg  | 12 ++++++++++++
 2 files changed, 24 insertions(+)

diff --git a/kickstart/files/kickstart.cfg b/kickstart/files/kickstart.cfg
index bf77da99..1669505c 100644
--- a/kickstart/files/kickstart.cfg
+++ b/kickstart/files/kickstart.cfg
@@ -2406,6 +2406,18 @@ if [ ! -z "${insthwsettle}" ]; then
     fi
 fi
 
+# Search the install kernel command line for the multi-drivers-switch=
+# option and if present propagate that to the disk boot kernel options.
+CMDLINE=`cat /proc/cmdline`
+param="multi-drivers-switch"
+for option in ${CMDLINE} ; do
+    opt=${option%%=*}
+    if [ "${param}" = "${opt}" ]; then
+       add_kernel_option "${option}"
+       break
+    fi
+done
+
 ########################################################################################
 
 ilog "Adding these kernel params to disk boot: ${KERN_OPTS}"
diff --git a/kickstart/files/miniboot.cfg b/kickstart/files/miniboot.cfg
index 4aa48efa..970e46ea 100644
--- a/kickstart/files/miniboot.cfg
+++ b/kickstart/files/miniboot.cfg
@@ -2595,6 +2595,18 @@ if [ -n "${extra_boot_params}" ]; then
     add_kernel_option "${extra_boot_params}"
 fi
 
+# Search the install kernel command line for the multi-drivers-switch=
+# option and if present propagate that to the disk boot kernel options.
+CMDLINE=`cat /proc/cmdline`
+param="multi-drivers-switch"
+for option in ${CMDLINE} ; do
+    opt=${option%%=*}
+    if [ "${param}" = "${opt}" ]; then
+       add_kernel_option "${option}"
+       break
+    fi
+done
+
 ########################################################################################
 
 ilog "Adding these kernel params to disk boot: ${KERN_OPTS}"