1 files changed, 63 insertions, 0 deletions

diff --git a/arch/x86/realmode/rm/Makefile b/arch/x86/realmode/rm/Makefile
new file mode 100644
index 00000000000..7c3f202cbcc
--- /dev/null
+++ b/arch/x86/realmode/rm/Makefile
@@ -0,0 +1,63 @@
+#
+# arch/x86/realmode/Makefile
+#
+# 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.
+#
+#
+
+subdir- := wakeup
+
+always := realmode.bin
+
+realmode-y                      += header.o
+
+targets += $(realmode-y)
+
+REALMODE_OBJS = $(addprefix $(obj)/,$(realmode-y))
+
+sed-pasyms := -n -r -e 's/^([0-9a-fA-F]+) [ABCDGRSTVW] (.+)$$/pa_\2 = \2;/p'
+
+quiet_cmd_pasyms = PASYMS  $@
+      cmd_pasyms = $(NM) $(filter-out FORCE,$^) | \
+                   sed $(sed-pasyms) | sort | uniq > $@
+
+$(obj)/pasyms.h: $(REALMODE_OBJS) FORCE
+        $(call if_changed,pasyms)
+
+$(obj)/realmode.lds: $(obj)/pasyms.h
+
+LDFLAGS_realmode.elf := --emit-relocs -T
+CPPFLAGS_realmode.lds += -P -C -I$(obj)
+
+$(obj)/realmode.elf: $(obj)/realmode.lds $(REALMODE_OBJS) FORCE
+        $(call if_changed,ld)
+
+OBJCOPYFLAGS_realmode.bin := -O binary
+
+$(obj)/realmode.bin: $(obj)/realmode.elf
+        $(call if_changed,objcopy)
+
+quiet_cmd_relocs = RELOCS  $@
+      cmd_relocs = scripts/x86-relocs --realmode $< > $@
+$(obj)/realmode.relocs: $(obj)/realmode.elf FORCE
+        $(call if_changed,relocs)
+
+# ---------------------------------------------------------------------------
+
+# How to compile the 16-bit code.  Note we always compile for -march=i386,
+# that way we can complain to the user if the CPU is insufficient.
+KBUILD_CFLAGS   := $(LINUXINCLUDE) -m32 -g -Os -D_SETUP -D__KERNEL__ \
+                   -DDISABLE_BRANCH_PROFILING \
+                   -Wall -Wstrict-prototypes \
+                   -march=i386 -mregparm=3 \
+                   -include $(srctree)/$(src)/../../boot/code16gcc.h \
+                   -fno-strict-aliasing -fomit-frame-pointer \
+                   $(call cc-option, -ffreestanding) \
+                   $(call cc-option, -fno-toplevel-reorder,\
+                        $(call cc-option, -fno-unit-at-a-time)) \
+                   $(call cc-option, -fno-stack-protector) \
+                   $(call cc-option, -mpreferred-stack-boundary=2)
+KBUILD_AFLAGS   := $(KBUILD_CFLAGS) -D__ASSEMBLY__
+GCOV_PROFILE := n