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From: Mark Hatle <mark.hatle@windriver.com>
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Date: Wed, 3 Apr 2013 12:47:30 -0500
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Subject: [PATCH] Enable additional kernel parameters for syslinux
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From: Konrad Scherer <Konrad.Scherer@windriver.com>

Add additional parameter 'SYSLINUX_KERNEL_ARGS' in order to allow
for specific kernel parameters to be set when using syslinux.

Signed-off-by: Konrad Scherer <Konrad.Scherer@windriver.com>
Signed-off-by: Mark Hatle <mark.hatle@windriver.com>
---
 meta/classes/syslinux.bbclass | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/meta/classes/syslinux.bbclass b/meta/classes/syslinux.bbclass
index 0b90eab..1eca4f8 100644
--- a/meta/classes/syslinux.bbclass
+++ b/meta/classes/syslinux.bbclass
@@ -13,6 +13,7 @@
 # ${SYSLINUX_OPTS} - additional options to add to the syslinux file ';' delimited
 # ${SYSLINUX_SPLASH} - A background for the vga boot menu if using the boot menu
 # ${SYSLINUX_SERIAL} - Set an alternate serial port or turn off serial with empty string
+# ${SYSLINUX_KERNEL_ARGS} - Add additional kernel arguments
 
 do_bootimg[depends] += "syslinux:do_populate_sysroot \
                         syslinux-native:do_populate_sysroot"
@@ -150,6 +151,10 @@ python build_syslinux_cfg () {
         for btype in btypes:
             cfgfile.write('LABEL %s%s\nKERNEL /vmlinuz\n' % (btype[0], label))
 
+            exargs = d.getVar('SYSLINUX_KERNEL_ARGS', True)
+            if exargs:
+                btype[1] += " " + exargs
+
             append = localdata.getVar('APPEND', True)
             initrd = localdata.getVar('INITRD', True)
 
-- 
1.8.1.2.545.g2f19ada