OpenRISC: Build infrastructure

Signed-off-by: Jonas Bonn <jonas@southpole.se>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 55 insertions, 0 deletions

diff --git a/arch/openrisc/Makefile b/arch/openrisc/Makefile
new file mode 100644
index 000000000000..158ae4c0dc6c
--- /dev/null
+++ b/arch/openrisc/Makefile
@@ -0,0 +1,55 @@
+# BK Id: %F% %I% %G% %U% %#%
+#
+# This file is included by the global makefile so that you can add your own
+# architecture-specific flags and dependencies. Remember to do have actions
+# for "archclean" and "archdep" for cleaning up and making dependencies for
+# this architecture
+#
+# This file is subject to the terms and conditions of the GNU General Public
+# License.  See the file "COPYING" in the main directory of this archive
+# for more details.
+#
+# Copyright (C) 1994 by Linus Torvalds
+# Modifications for the OpenRISC architecture:
+# Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
+# Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
+#
+# Based on:
+# arch/i386/Makefile
+
+KBUILD_DEFCONFIG := or1ksim_defconfig
+
+LDFLAGS         :=
+OBJCOPYFLAGS    := -O binary -R .note -R .comment -S
+LDFLAGS_vmlinux :=
+LIBGCC          := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
+
+KBUILD_CFLAGS   += -pipe -ffixed-r10
+
+ifeq ($(CONFIG_OPENRISC_HAVE_INST_MUL),y)
+        KBUILD_CFLAGS += $(call cc-option,-mhard-mul)
+else
+        KBUILD_CFLAGS += $(call cc-option,-msoft-mul)
+endif
+
+ifeq ($(CONFIG_OPENRISC_HAVE_INST_DIV),y)
+        KBUILD_CFLAGS += $(call cc-option,-mhard-div)
+else
+        KBUILD_CFLAGS += $(call cc-option,-msoft-div)
+endif
+
+head-y          := arch/openrisc/kernel/head.o arch/openrisc/kernel/init_task.o
+
+core-y          += arch/openrisc/lib/ \
+                   arch/openrisc/kernel/ \
+                   arch/openrisc/mm/
+libs-y          += $(LIBGCC)
+
+ifneq '$(CONFIG_OPENRISC_BUILTIN_DTB)' '""'
+BUILTIN_DTB := y
+else
+BUILTIN_DTB := n
+endif
+core-$(BUILTIN_DTB) += arch/openrisc/boot/
+
+all: vmlinux