[Xen-devel] [PATCH v4 25/25] arm: makefiles

[<stefano.stabellini@xxxxxxxxxxxxx>]

From: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>

Makefile and config options for the ARM architecture.


Changes in v2:

- move patch at the end of the series.


Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
Signed-off-by: Tim Deegan <Tim.Deegan@xxxxxxxxxx>
---
 config/arm.mk         |   18 +++++++++++
 xen/arch/arm/Makefile |   76 +++++++++++++++++++++++++++++++++++++++++++++++++
 xen/arch/arm/Rules.mk |   29 ++++++++++++++++++
 3 files changed, 123 insertions(+), 0 deletions(-)
 create mode 100644 config/arm.mk
 create mode 100644 xen/arch/arm/Makefile
 create mode 100644 xen/arch/arm/Rules.mk

diff --git a/config/arm.mk b/config/arm.mk
new file mode 100644
index 0000000..f64f0c1
--- /dev/null
+++ b/config/arm.mk
@@ -0,0 +1,18 @@
+CONFIG_ARM := y
+CONFIG_ARM_32 := y
+CONFIG_ARM_$(XEN_OS) := y
+
+# -march= -mcpu=
+
+# Explicitly specifiy 32-bit ARM ISA since toolchain default can be -mthumb:
+CFLAGS += -marm
+
+HAS_PL011 := y
+
+# Use only if calling $(LD) directly.
+#LDFLAGS_DIRECT_OpenBSD = _obsd
+#LDFLAGS_DIRECT_FreeBSD = _fbsd
+LDFLAGS_DIRECT_Linux = _linux
+LDFLAGS_DIRECT += -marmelf$(LDFLAGS_DIRECT_$(XEN_OS))_eabi
+
+CONFIG_LOAD_ADDRESS ?= 0x80000000
diff --git a/xen/arch/arm/Makefile b/xen/arch/arm/Makefile
new file mode 100644
index 0000000..5a07ae7
--- /dev/null
+++ b/xen/arch/arm/Makefile
@@ -0,0 +1,76 @@
+subdir-y += lib
+
+obj-y += dummy.o
+obj-y += entry.o
+obj-y += domain.o
+obj-y += domain_build.o
+obj-y += gic.o
+obj-y += io.o
+obj-y += irq.o
+obj-y += mm.o
+obj-y += p2m.o
+obj-y += guestcopy.o
+obj-y += setup.o
+obj-y += time.o
+obj-y += smpboot.o
+obj-y += smp.o
+obj-y += shutdown.o
+obj-y += traps.o
+obj-y += vgic.o
+obj-y += vtimer.o
+
+#obj-bin-y += ....o
+
+ALL_OBJS := head.o $(ALL_OBJS)
+
+$(TARGET): $(TARGET)-syms
+       # XXX: VE model loads by VMA so instead of
+       # making a proper ELF we link with LMA == VMA and adjust crudely
+       $(OBJCOPY) --change-addresses +0x7fe00000 $< $@
+       # XXX strip it
+
+#$(TARGET): $(TARGET)-syms $(efi-y) boot/mkelf32
+#      ./boot/mkelf32 $(TARGET)-syms $(TARGET) 0x100000 \
+#      `$(NM) -nr $(TARGET)-syms | head -n 1 | sed -e 's/^\([^ ]*\).*/0x\1/'`
+
+ifeq ($(lto),y)
+# Gather all LTO objects together
+prelink_lto.o: $(ALL_OBJS)
+       $(LD_LTO) -r -o $@ $^
+
+# Link it with all the binary objects
+prelink.o: $(patsubst %/built_in.o,%/built_in_bin.o,$(ALL_OBJS)) prelink_lto.o
+       $(LD) $(LDFLAGS) -r -o $@ $^
+else
+prelink.o: $(ALL_OBJS)
+       $(LD) $(LDFLAGS) -r -o $@ $^
+endif
+
+$(BASEDIR)/common/symbols-dummy.o:
+       $(MAKE) -f $(BASEDIR)/Rules.mk -C $(BASEDIR)/common symbols-dummy.o
+
+$(TARGET)-syms: prelink.o xen.lds $(BASEDIR)/common/symbols-dummy.o
+       $(LD) $(LDFLAGS) -T xen.lds -N prelink.o \
+           $(BASEDIR)/common/symbols-dummy.o -o $(@D)/.$(@F).0
+       $(NM) -n $(@D)/.$(@F).0 | $(BASEDIR)/tools/symbols >$(@D)/.$(@F).0.S
+       $(MAKE) -f $(BASEDIR)/Rules.mk $(@D)/.$(@F).0.o
+       $(LD) $(LDFLAGS) -T xen.lds -N prelink.o \
+           $(@D)/.$(@F).0.o -o $(@D)/.$(@F).1
+       $(NM) -n $(@D)/.$(@F).1 | $(BASEDIR)/tools/symbols >$(@D)/.$(@F).1.S
+       $(MAKE) -f $(BASEDIR)/Rules.mk $(@D)/.$(@F).1.o
+       $(LD) $(LDFLAGS) -T xen.lds -N prelink.o \
+           $(@D)/.$(@F).1.o -o $@
+       rm -f $(@D)/.$(@F).[0-9]*
+
+asm-offsets.s: asm-offsets.c
+       $(CC) $(filter-out -flto,$(CFLAGS)) -S -o $@ $<
+
+xen.lds: xen.lds.S
+       $(CC) -P -E -Ui386 $(AFLAGS) -DXEN_PHYS_START=$(CONFIG_LOAD_ADDRESS) -o 
$@ $<
+       sed -e 's/xen\.lds\.o:/xen\.lds:/g' <.xen.lds.d >.xen.lds.d.new
+       mv -f .xen.lds.d.new .xen.lds.d
+
+.PHONY: clean
+clean::
+       rm -f asm-offsets.s xen.lds
+       rm -f $(BASEDIR)/.xen-syms.[0-9]*
diff --git a/xen/arch/arm/Rules.mk b/xen/arch/arm/Rules.mk
new file mode 100644
index 0000000..336e209
--- /dev/null
+++ b/xen/arch/arm/Rules.mk
@@ -0,0 +1,29 @@
+########################################
+# arm-specific definitions
+
+#
+# If you change any of these configuration options then you must
+# 'make clean' before rebuilding.
+#
+
+CFLAGS += -fno-builtin -fno-common -Wredundant-decls
+CFLAGS += -iwithprefix include -Werror -Wno-pointer-arith -pipe
+CFLAGS += -I$(BASEDIR)/include
+
+# Prevent floating-point variables from creeping into Xen.
+CFLAGS += -msoft-float
+
+$(call cc-options-add,CFLAGS,CC,$(EMBEDDED_EXTRA_CFLAGS))
+$(call cc-option-add,CFLAGS,CC,-Wnested-externs)
+
+arm := y
+
+ifneq ($(call cc-option,$(CC),-fvisibility=hidden,n),n)
+CFLAGS += -DGCC_HAS_VISIBILITY_ATTRIBUTE
+endif
+
+CFLAGS += -march=armv7-a -mcpu=cortex-a15
+
+# Require GCC v3.4+ (to avoid issues with alignment constraints in Xen headers)
+check-$(gcc) = $(call cc-ver-check,CC,0x030400,"Xen requires at least gcc-3.4")
+$(eval $(check-y))
-- 
1.7.2.5


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