From 82e725505a8924059c5c75ed32cf3101ef318c10 Mon Sep 17 00:00:00 2001
From: Paul Sokolovsky <pmiscml@gmail.com>
Date: Sat, 16 Feb 2008 00:17:13 +0000
Subject: initramfs-module-kexecboot: Initramfs module to kexec to kernel in
 rootfs. * Instead of switch_root'ing to it, which was the only working mode
 previously. So, now, if there's /boot/zImage in rootfs, it will be kexec'ed
 too. Otherwise, switch_root will happen. * Caveat: there should be initramfs
 for new (kexec'ed to) kernel too, too handle its loading of rootfs as
 selected by interactive bootloader. This can be very same kernel as for
 bootloader, with bundled initramfs-bootmenu-image (which has special check -
 if root is explicitly specified on command line, then skip interactive
 selection); or, as a kind of optimization, that could be initramfs-image (no
 interactive part). Finally, initramfs (any of there two or other) can be a
 standalone file in rootfs, /boot/initramfs.bin.

---
 packages/initrdscripts/files/87-kexecboot.sh            | 17 +++++++++++++++++
 .../initrdscripts/initramfs-module-kexecboot_1.0.bb     | 12 ++++++++++++
 2 files changed, 29 insertions(+)
 create mode 100644 packages/initrdscripts/files/87-kexecboot.sh
 create mode 100644 packages/initrdscripts/initramfs-module-kexecboot_1.0.bb

(limited to 'packages/initrdscripts')

diff --git a/packages/initrdscripts/files/87-kexecboot.sh b/packages/initrdscripts/files/87-kexecboot.sh
new file mode 100644
index 0000000000..ab281577d4
--- /dev/null
+++ b/packages/initrdscripts/files/87-kexecboot.sh
@@ -0,0 +1,17 @@
+#!/bin/sh
+# Allow kexecing to kernel in rootfs
+
+if [ -n "$BOOT_ROOT" -a -f "$BOOT_ROOT/boot/zImage" ]; then
+    echo "Kernel found in rootfs:"
+    ls -l "$BOOT_ROOT/boot/zImage"
+    initramfs=""
+    if [ -f "$BOOT_ROOT/boot/initramfs.bin" ]; then
+	echo "Initramfs found in rootfs:"
+	ls -l "$BOOT_ROOT/boot/initramfs.bin"
+	initramfs="--initrd=$BOOT_ROOT/boot/initramfs.bin"
+    fi
+    echo /usr/sbin/kexec -f "$BOOT_ROOT/boot/zImage" $initramfs --command-line="$CMDLINE"
+    sleep 10
+    /usr/sbin/kexec -f "$BOOT_ROOT/boot/zImage" $initramfs --command-line="$CMDLINE"
+    sleep 10000
+fi
diff --git a/packages/initrdscripts/initramfs-module-kexecboot_1.0.bb b/packages/initrdscripts/initramfs-module-kexecboot_1.0.bb
new file mode 100644
index 0000000000..e8be2fd757
--- /dev/null
+++ b/packages/initrdscripts/initramfs-module-kexecboot_1.0.bb
@@ -0,0 +1,12 @@
+SRC_URI = "file://87-kexecboot.sh"
+PR = "r0.2"
+DESCRIPTION = "An initramfs module for kexecing kernel from rootfs."
+RDEPENDS = "initramfs-uniboot kexec-static"
+
+do_install() {
+	install -d ${D}/initrd.d
+        install -m 0755 ${WORKDIR}/87-kexecboot.sh ${D}/initrd.d/
+}
+
+PACKAGE_ARCH = "all"
+FILES_${PN} += " /initrd.d/* "
-- 
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