Here is a patch to do that (works only for the GTA02 for now).
From 10351531703fd014d460f67aa331873060cc062f Mon Sep 17 00:00:00 2001
From: Thibaut Girka t...@sitedethib.com
Date: Sun, 15 Aug 2010 13:38:33 +0200
Subject: [PATCH 3/9] flash-kernel-installer: add uboot-installer
---
packages/flash-kernel/check.d/_numbers |1 +
packages/flash-kernel/check.d/ext2_boot| 64 +
packages/flash-kernel/debian/control |2 +-
.../debian/flash-kernel-installer.di-numbers |1 +
.../debian/flash-kernel-installer.install |1 +
.../debian/flash-kernel-installer.postinst |1 +
.../debian/flash-kernel-installer.templates| 71 ++
packages/flash-kernel/debian/rules |2 +-
packages/flash-kernel/uboot-installer | 146
9 files changed, 287 insertions(+), 2 deletions(-)
create mode 100644 packages/flash-kernel/check.d/_numbers
create mode 100755 packages/flash-kernel/check.d/ext2_boot
create mode 100644 packages/flash-kernel/debian/flash-kernel-installer.di-numbers
create mode 100644 packages/flash-kernel/debian/flash-kernel-installer.install
create mode 100644 packages/flash-kernel/uboot-installer
diff --git a/packages/flash-kernel/check.d/_numbers b/packages/flash-kernel/check.d/_numbers
new file mode 100644
index 000..18d7600
--- /dev/null
+++ b/packages/flash-kernel/check.d/_numbers
@@ -0,0 +1 @@
+05 ext2_boot
diff --git a/packages/flash-kernel/check.d/ext2_boot b/packages/flash-kernel/check.d/ext2_boot
new file mode 100755
index 000..7109543
--- /dev/null
+++ b/packages/flash-kernel/check.d/ext2_boot
@@ -0,0 +1,64 @@
+#!/bin/sh
+# Check that the boot partition is of type ext2, and that it is marked as
+# bootable. Used for Openmoko FreeRunner (GTA02).
+
+machine=$(sed '/^Hardware/ {s/^Hardware\s*:\s*//;p}' /proc/cpuinfo)
+case $machine in
+ GTA02)
+ ;;
+ *)
+ exit 0
+ ;;
+esac
+
+. /lib/partman/lib/base.sh
+
+for dev in $DEVICES/*; do
+ [ -d $dev ] || continue
+ cd $dev
+ open_dialog PARTITIONS
+ while { read_line num id size type fs path name; [ $id ]; }; do
+ [ $fs != free ] || continue
+ [ -f $id/method ] || continue
+ [ -f $id/acting_filesystem ] || continue
+ [ -f $id/mountpoint ] || continue
+ mountpoint=$(cat $id/mountpoint)
+ filesystem=$(cat $id/acting_filesystem)
+ if [ $mountpoint = / ]; then
+ root_fs=$filesystem
+ root_type=$type
+ root_path=$path
+ if [ -f $id/bootable ]; then
+root_bootable=yes
+ fi
+ elif [ $mountpoint = /boot ]; then
+ boot_fs=$filesystem
+ boot_type=$type
+ boot_path=$path
+ if [ -f $id/bootable ]; then
+boot_bootable=yes
+ fi
+ fi
+ done
+ close_dialog
+done
+
+# If no separate boot partition exists root acts as boot
+if [ -z $boot_path ]; then
+ boot_fs=$root_fs
+ boot_type=$root_type
+ boot_path=$root_path
+ boot_bootable=$root_bootable
+fi
+
+# We require an ext2 filesystem to boot
+if [ $boot_fs != ext2 ]; then
+ db_set flash-kernel-installer/uboot/boot_not_ext2 true
+ db_input critical flash-kernel-installer/uboot/boot_not_ext2 || true
+ db_go || true
+ db_get flash-kernel-installer/uboot/boot_not_ext2
+ if [ $RET = true ]; then
+ exit 1
+ fi
+fi
+
diff --git a/packages/flash-kernel/debian/control b/packages/flash-kernel/debian/control
index ce959a2..7d1fc1a 100644
--- a/packages/flash-kernel/debian/control
+++ b/packages/flash-kernel/debian/control
@@ -3,7 +3,7 @@ Section: utils
Priority: optional
Maintainer: Debian Install System Team debian-b...@lists.debian.org
Uploaders: Martin Michlmayr t...@cyrius.com, Wouter Verhelst wou...@debian.org
-Build-Depends: debhelper (= 7.3.10)
+Build-Depends: debhelper (= 7.3.10), dh-di
Standards-Version: 3.7.2
Vcs-Svn: svn://svn.debian.org/d-i/trunk/packages/flash-kernel
diff --git a/packages/flash-kernel/debian/flash-kernel-installer.di-numbers b/packages/flash-kernel/debian/flash-kernel-installer.di-numbers
new file mode 100644
index 000..0110b8d
--- /dev/null
+++ b/packages/flash-kernel/debian/flash-kernel-installer.di-numbers
@@ -0,0 +1 @@
+check.d lib/partman
diff --git a/packages/flash-kernel/debian/flash-kernel-installer.install b/packages/flash-kernel/debian/flash-kernel-installer.install
new file mode 100644
index 000..cd38ae6
--- /dev/null
+++ b/packages/flash-kernel/debian/flash-kernel-installer.install
@@ -0,0 +1 @@
+uboot-installer usr/share/flash-kernel-installer
diff --git a/packages/flash-kernel/debian/flash-kernel-installer.postinst b/packages/flash-kernel/debian/flash-kernel-installer.postinst
index 22bc6d1..164e464 100755
--- a/packages/flash-kernel/debian/flash-kernel-installer.postinst
+++ b/packages/flash-kernel/debian/flash-kernel-installer.postinst
@@ -5,6 +5,7 @@
set -e
. /usr/share/debconf/confmodule
+. /usr/share/flash-kernel-installer/uboot-installer
log() {
logger -t flash-kernel-installer $@
diff --git a/packages/flash-kernel/debian/flash-kernel-installer.templates
