[gnome-continuous-yocto/gnomeostree-3.28-rocko: 4570/8267] uboot-extlinux-config.bbclass: add support for timeout & default

[Emmanuele Bassi <ebassi src gnome org>]

commit 6f3f9457a6d26a89cbb31d880828d7cda116ec99
Author: Dalon Westergreen <dwesterg gmail com>
Date:   Tue Feb 7 15:46:29 2017 -0800

    uboot-extlinux-config.bbclass: add support for timeout & default
    
    When multible targets are defined it is useful to allow for
    a default target along with a timeout.  After timeout, the
    default target will be selected.
    
    (From OE-Core rev: 1e01c2e32c168805a9b71c1dba4b487916955813)
    
    Signed-off-by: Dalon Westergreen <dwesterg gmail com>
    Signed-off-by: Ross Burton <ross burton intel com>
    Signed-off-by: Richard Purdie <richard purdie linuxfoundation org>

 meta/classes/uboot-extlinux-config.bbclass |   18 ++++++++++++++++++
 1 files changed, 18 insertions(+), 0 deletions(-)
---
diff --git a/meta/classes/uboot-extlinux-config.bbclass b/meta/classes/uboot-extlinux-config.bbclass
index 904d5b3..aae2171 100644
--- a/meta/classes/uboot-extlinux-config.bbclass
+++ b/meta/classes/uboot-extlinux-config.bbclass
@@ -16,6 +16,10 @@
 #                                    concatenate and use as an initrd (optional).
 # UBOOT_EXTLINUX_MENU_DESCRIPTION  - Name to use as description.
 # UBOOT_EXTLINUX_ROOT              - Root kernel cmdline.
+# UBOOT_EXTLINUX_TIMEOUT           - Timeout before DEFAULT selection is made.
+#                                    Measured in 1/10 of a second.
+# UBOOT_EXTLINUX_DEFAULT_LABEL     - Target to be selected by default after
+#                                    the timeout period
 #
 # If there's only one label system will boot automatically and menu won't be
 # created. If you want to use more than one labels, e.g linux and alternate,
@@ -25,6 +29,9 @@
 #
 # UBOOT_EXTLINUX_LABELS ??= "default fallback"
 #
+# UBOOT_EXTLINUX_DEFAULT_LABEL ??= "Linux Default"
+# UBOOT_EXTLINUX_TIMEOUT ??= "30"
+#
 # UBOOT_EXTLINUX_KERNEL_IMAGE_default ??= "../zImage"
 # UBOOT_EXTLINUX_MENU_DESCRIPTION_default ??= "Linux Default"
 #
@@ -34,6 +41,8 @@
 # Results:
 #
 # menu title Select the boot mode
+# TIMEOUT 30
+# DEFAULT Linux Default
 # LABEL Linux Default
 #   KERNEL ../zImage
 #   FDTDIR ../
@@ -82,6 +91,15 @@ python create_extlinux_config() {
             if len(labels.split()) > 1:
                 cfgfile.write('menu title Select the boot mode\n')
 
+            timeout =  localdata.getVar('UBOOT_EXTLINUX_TIMEOUT')
+            if timeout:
+                cfgfile.write('TIMEOUT %s\n' % (timeout))
+
+            if len(labels.split()) > 1:
+                default = localdata.getVar('UBOOT_EXTLINUX_DEFAULT_LABEL')
+                if default:
+                    cfgfile.write('DEFAULT %s\n' % (default))
+                    
             for label in labels.split():
                 localdata = bb.data.createCopy(d)