[PATCH 5/6] isar-installer: Fixing race between ttys in unattended mode.

["alexander.heinisch via isar-users" <isar-users@googlegroups.com>]

From: Alexander Heinisch <alexander.heinisch@siemens.com>

Signed-off-by: Alexander Heinisch <alexander.heinisch@siemens.com>
---
 kas/image/Kconfig             | 12 ++++++++----
 kas/installer/Kconfig         | 19 +++++++++++++++++--
 kas/installer/unattended.yaml | 18 ++++++++++++++++++
 3 files changed, 43 insertions(+), 6 deletions(-)
 create mode 100644 kas/installer/unattended.yaml

diff --git a/kas/image/Kconfig b/kas/image/Kconfig
index 1ebd056e..1e757ae4 100644
--- a/kas/image/Kconfig
+++ b/kas/image/Kconfig
@@ -37,10 +37,6 @@ config IMAGE_INSTALLER
 
 endchoice
 
-if IMAGE_INSTALLER
-source "kas/installer/Kconfig"
-endif
-
 config KAS_INCLUDE_IMAGE
 	string
 	default "kas/image/isar-image-base.yaml" if IMAGE_BASE
@@ -48,4 +44,12 @@ config KAS_INCLUDE_IMAGE
 	default "kas/image/isar-image-ci.yaml" if IMAGE_CI
 	default "kas/image/isar-image-installer.yaml" if IMAGE_INSTALLER
 
+if IMAGE_INSTALLER
+menu "Installer config"
+
+source "kas/installer/Kconfig"
+
+endmenu
+endif
+
 endmenu
diff --git a/kas/installer/Kconfig b/kas/installer/Kconfig
index 83380ee2..0b891c9a 100644
--- a/kas/installer/Kconfig
+++ b/kas/installer/Kconfig
@@ -3,7 +3,9 @@
 #
 # SPDX-License-Identifier: MIT
 
-menu "Installer config"
+config KAS_INCLUDE_IMAGE
+	string
+	default "kas/image/isar-image-installer.yaml"
 
 choice
 	prompt "Image to install"
@@ -44,6 +46,10 @@ config INSTALL_UNATTENDED
 
 if INSTALL_UNATTENDED
 
+config KAS_INCLUDE_INSTALLER_UNATTENDED
+	string
+	default "kas/installer/unattended.yaml"
+
 config INSTALLER_UNATTENDED
 	string
 	default "1" if INSTALL_UNATTENDED
@@ -76,4 +82,13 @@ config INSTALLER_TARGET_OVERWRITE
 
 endif
 
-endmenu
+config INSTALLER_TTY_SERVICES
+	string "TTY Service to use"
+	default "getty@tty1 serial-getty@ttyS0" if !INSTALL_UNATTENDED
+	default "serial-getty@ttyS0" if INSTALL_UNATTENDED
+	help
+          TTY Service(s) used to execute the installer on.
+	  In case of unattended installers, make sure only one tty
+	  is specified here, else race condition between installer
+	  instances may occur.
+	  Examples: "serial-getty@ttyS0", "getty@tty1" or combinations like "getty@tty1 serial-getty@ttyS0"
diff --git a/kas/installer/unattended.yaml b/kas/installer/unattended.yaml
new file mode 100644
index 00000000..21beac0a
--- /dev/null
+++ b/kas/installer/unattended.yaml
@@ -0,0 +1,18 @@
+# This software is a part of ISAR.
+# Copyright (C) Siemens AG, 2025
+#
+# SPDX-License-Identifier: MIT
+
+header:
+  version: 14
+
+local_conf_header:
+  target_bootstrapper_deploy-image: |
+    INSTALLER_UNATTENDED = "1"
+    INSTALLER_TARGET_DEVICE ?= "/dev/sda:/dev/nvme0n1"
+    INSTALLER_TARGET_OVERWRITE ?= "OVERWRITE"
+
+  target_bootstrapper-tty: |
+    TARGET_BOOTSTRAPPER_TTY_SERVICES ?= "\
+        serial-getty@ttyS0 \
+    "
\ No newline at end of file
-- 
2.39.5

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