# HG changeset patch
# User Jerone Young <[EMAIL PROTECTED]>
# Date 1205952857 18000
# Branch merge
# Node ID be1aa50ab7de0a9e0441e46769e2a40a582fc3c0
# Parent 20c62a22bfaeca9f01439b96b7159b725fff0dcd
Add libfdt support to qemu
This patch libfdt support into the qemu configuation script. There is a portion
for libfdt probing that is has some "XXX". The code commented out is how to
properly do probing for a library, the issue is that with kvm-userspace we do
not build libfdt before configuring qemu. So to pervent this check from failing
everytime we just do a simple test with the libfdt header. Once this can be
resolved elgantly then we can uncomment the place commented out and remove the
lines below them.
Signed-off-by: Jerone Young <[EMAIL PROTECTED]>
diff --git a/qemu/Makefile.target b/qemu/Makefile.target
--- a/qemu/Makefile.target
+++ b/qemu/Makefile.target
@@ -555,6 +555,11 @@ ifdef CONFIG_VNC_TLS
ifdef CONFIG_VNC_TLS
CPPFLAGS += $(CONFIG_VNC_TLS_CFLAGS)
LIBS += $(CONFIG_VNC_TLS_LIBS)
+endif
+
+ifdef CONFIG_LIBFDT
+LIBS += -lfdt
+DEPLIBS += libfdt.a
endif
# SCSI layer
diff --git a/qemu/configure b/qemu/configure
--- a/qemu/configure
+++ b/qemu/configure
@@ -112,6 +112,7 @@ uname_release=""
uname_release=""
curses="yes"
cpu_emulation="yes"
+device_tree_support=""
# OS specific
targetos=`uname -s`
@@ -345,6 +346,8 @@ for opt do
;;
--disable-cpu-emulation) cpu_emulation="no"
;;
+ --disable-libfdt) device_tree_support="no"
+ ;;
*) echo "ERROR: unknown option $opt"; exit 1
;;
esac
@@ -449,6 +452,7 @@ echo " --enable-uname-release=R Return
echo " --enable-uname-release=R Return R for uname -r in usermode emulation"
echo " --sparc_cpu=V Build qemu for Sparc architecture v7, v8,
v8plus, v8plusa, v9"
echo " --disable-cpu-emulation disables use of qemu cpu emulation code"
+echo " --disable-libfdt disables use of libfdt support for device
tree"
echo ""
echo "NOTE: The object files are built at the place where configure is
launched"
exit 1
@@ -732,6 +736,31 @@ else
binsuffix="/bin"
fi
+######################################
+# libfdt probe
+#
+if test -z "$device_tree_support" -a \
+ "$cpu" = "powerpc"; then
+ device_tree_support="no"
+ cat > $TMPC << EOF
+#include <libfdt.h>
+/* XXX uncomment later when libfdt is built before this test */
+//int main(void) { void *fdt; return fdt_create(fdt, 1024); }
+int main (void) {return 0;}
+EOF
+# XXX for now do not try to link to libfdt and just check for header */
+# if $cc $ARCH_CFLAGS $CFLAGS $LDFLAGS -o $TMPE $TMPC -lfdt 2> /dev/null ; then
+ if $cc $ARCH_CFLAGS $CFLAGS $LDFLAGS -o $TMPE $TMPC 2> /dev/null; then
+ device_tree_support="yes"
+ else
+ echo
+ echo "Error: Could not find libfdt"
+ echo "Make sure to have the libfdt libs and headers installed."
+ echo
+ exit 1
+ fi
+fi
+
echo "Install prefix $prefix"
echo "BIOS directory $prefix$datasuffix"
echo "binary directory $prefix$binsuffix"
@@ -793,6 +822,9 @@ echo "kqemu support $kqemu"
echo "kqemu support $kqemu"
echo "kvm support $kvm"
echo "CPU emulation $cpu_emulation"
+if test $cpu = "powerpc"; then
+echo "libfdt support $device_tree_support"
+fi
echo "Documentation $build_docs"
[ ! -z "$uname_release" ] && \
echo "uname -r $uname_release"
@@ -1186,6 +1218,10 @@ elif test "$target_cpu" = "ppcemb" ; the
echo "#define TARGET_ARCH \"ppcemb\"" >> $config_h
echo "#define TARGET_PPC 1" >> $config_h
echo "#define TARGET_PPCEMB 1" >> $config_h
+ if test "$device_tree_support" = "yes" ; then
+ echo "#define CONFIG_LIBFDT 1" >> $config_h
+ echo "CONFIG_LIBFDT=1" >> $config_mak
+ fi
configure_kvm
elif test "$target_cpu" = "ppc64" ; then
echo "TARGET_ARCH=ppc64" >> $config_mak
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