Add stubdomain support. See stubdom/README for usage details.

- Move PAGE_SIZE and STACK_SIZE into __PAGE_SIZE and __STACK_SIZE in
  arch_limits.h so as to permit getting them from there without
  pulling all the internal Mini-OS defines.
- Setup a xen-elf cross-compilation environment in stubdom/cross-root
- Add a POSIX layer on top of Mini-OS by linking against the newlib C
  library and lwIP, and implementing the Unixish part in mini-os/lib/sys.c
- Cross-compile zlib and libpci too.
- Add an xs.h-compatible layer on top of Mini-OS' xenbus.
- Cross-compile libxc with an additional xc_minios.c and a few things
  disabled.
- Cross-compile ioemu with an additional block-vbd, but without sound,
  tpm and other details.  A few hacks are needed:
  - Align ide and scsi buffers at least on sector size to permit
  direct transmission to the block backend. While we are at it, just
  page-align it to possibly save a segment. Also, limit the scsi
  buffer size because of limitations of the block paravirtualization
  protocol.
  - Allocate big tables dynamically rather that letting them go to
  bss: when Mini-OS gets installed in memory, bss is not lazily
  allocated, and doing so during Mini-OS is unnecessarily trick while
  we can simply use malloc.
- Had to change the Mini-OS compilation somehow, so as to export
  Mini-OS compilation flags to the Makefiles of libxc and ioemu.

Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>

1 files changed, 256 insertions, 0 deletions

diff --git a/stubdom/Makefile b/stubdom/Makefile
new file mode 100644
index 0000000000..ca2f342c3a
--- /dev/null
+++ b/stubdom/Makefile
@@ -0,0 +1,256 @@
+XEN_ROOT = ..
+
+include $(XEN_ROOT)/Config.mk
+export stubdom=y
+export debug=y
+
+IOEMU_OPTIONS=--disable-vnc-tls 
+BINUTILS_VERSION=2.18
+GCC_VERSION=4.2.2
+ZLIB_VERSION=1.2.3
+LIBPCI_VERSION=2.2.9
+NEWLIB_DATE=2008-01-01
+LWIP_DATE=2008-02-08
+
+WGET=wget -c
+
+GNU_TARGET_ARCH:=$(XEN_TARGET_ARCH)
+ifeq ($(XEN_TARGET_ARCH),x86_32)
+GNU_TARGET_ARCH:=i686
+endif
+
+ifeq ($(GNU_TARGET_ARCH), i686)
+TARGET_CFLAGS=
+endif
+ifeq ($(GNU_TARGET_ARCH), x86_64)
+TARGET_CFLAGS=-mno-red-zone
+endif
+ifeq ($(GNU_TARGET_ARCH), ia64)
+TARGET_CFLAGS=-mconstant-gp
+endif
+
+CROSS_ROOT=cross-root-$(GNU_TARGET_ARCH)
+CROSS_PREFIX=$(CURDIR)/$(CROSS_ROOT)
+export CROSS_COMPILE=$(GNU_TARGET_ARCH)-xen-elf-
+export PATH:=$(CROSS_PREFIX)/bin:$(PATH)
+
+.PHONY: all
+all: qemu-stubdom
+
+################
+# Cross-binutils
+################
+
+binutils-$(BINUTILS_VERSION).tar.bz2:
+	$(WGET) http://ftp.gnu.org/gnu/binutils/$@
+binutils-$(BINUTILS_VERSION): binutils-$(BINUTILS_VERSION).tar.bz2
+	tar xjf $@.tar.bz2
+	( cd binutils-$(BINUTILS_VERSION) && patch -p1 < ../binutils.patch )
+	touch $@
+
+BINUTILS_STAMPFILE=$(CROSS_ROOT)/bin/$(GNU_TARGET_ARCH)-xen-elf-ar
+.PHONY: cross-binutils
+cross-binutils: $(BINUTILS_STAMPFILE)
+$(BINUTILS_STAMPFILE): binutils-$(BINUTILS_VERSION)
+	mkdir -p binutils.build
+	( cd binutils.build && \
+	  ../binutils-$(BINUTILS_VERSION)/configure --prefix=$(CROSS_PREFIX) --verbose --target=$(GNU_TARGET_ARCH)-xen-elf && \
+	  $(MAKE) && \
+	  $(MAKE) check && \
+	  $(MAKE) install )
+
+###########
+# Cross-gcc
+###########
+
+gcc-$(GCC_VERSION).tar.bz2:
+	$(WGET) http://ftp.gnu.org/gnu/gcc/gcc-$(GCC_VERSION)/gcc-$(GCC_VERSION).tar.bz2
+gcc-$(GCC_VERSION): gcc-$(GCC_VERSION).tar.bz2
+	tar xjf gcc-$(GCC_VERSION).tar.bz2
+	( cd gcc-$(GCC_VERSION) && patch -p1 < ../gcc.patch )
+	touch $@
+	
+GCC_STAMPFILE=$(CROSS_ROOT)/bin/$(GNU_TARGET_ARCH)-xen-elf-gcc-$(GCC_VERSION)
+.PHONY: cross-gcc
+cross-gcc: $(GCC_STAMPFILE)
+$(GCC_STAMPFILE): gcc-$(GCC_VERSION) $(BINUTILS_STAMPFILE)
+	mkdir -p gcc.build
+	( cd gcc.build && \
+	  ../gcc-$(GCC_VERSION)/configure --prefix=$(CROSS_PREFIX) --verbose --target=$(GNU_TARGET_ARCH)-xen-elf --enable-languages=c --disable-libssp --with-gnu-as --with-gnu-ld && \
+	  $(MAKE) GCC_FOR_TARGET='$$$$r/gcc/xgcc -B$$$$r/gcc/ '"$(TARGET_CFLAGS)"' $$(FLAGS_FOR_TARGET)' && \
+	  $(MAKE) install )
+
+##############
+# Cross-newlib
+##############
+
+newlib:
+	cvs -z 9 -d :pserver:anoncvs@sources.redhat.com:/cvs/src co -D $(NEWLIB_DATE) newlib
+	mv src newlib
+	( cd newlib && patch -p0 < ../newlib.patch)
+
+NEWLIB_STAMPFILE=$(CROSS_ROOT)/$(GNU_TARGET_ARCH)-xen-elf/lib/libc.a
+.PHONY: cross-newlib
+cross-newlib: $(NEWLIB_STAMPFILE)
+$(NEWLIB_STAMPFILE): newlib $(GCC_STAMPFILE)
+	mkdir -p newlib.build
+	( cd newlib.build && \
+	  CC_FOR_TARGET="$(GNU_TARGET_ARCH)-xen-elf-gcc $(TARGET_CFLAGS)" ../newlib/configure --prefix=$(CROSS_PREFIX) --verbose --target=$(GNU_TARGET_ARCH)-xen-elf --enable-newlib-io-long-long && \
+	  $(MAKE) && \
+	  $(MAKE) install )
+
+############
+# Cross-zlib
+############
+
+zlib-$(ZLIB_VERSION).tar.gz:
+	$(WGET) http://www.zlib.net/zlib-$(ZLIB_VERSION).tar.gz
+
+ZLIB_STAMPFILE=$(CROSS_ROOT)/$(GNU_TARGET_ARCH)-xen-elf/lib/libz.a
+.PHONY: cross-zlib
+cross-zlib: $(ZLIB_STAMPFILE)
+$(ZLIB_STAMPFILE): zlib-$(ZLIB_VERSION).tar.gz $(NEWLIB_STAMPFILE)
+	tar xzf $<
+	( cd zlib-$(ZLIB_VERSION) && \
+	  CFLAGS="$(TARGET_CFLAGS)" CC=$(GNU_TARGET_ARCH)-xen-elf-gcc ./configure --prefix=$(CROSS_PREFIX)/$(GNU_TARGET_ARCH)-xen-elf && \
+	  $(MAKE) libz.a && \
+	  $(MAKE) install )
+
+##############
+# Cross-libpci
+##############
+
+pciutils-$(LIBPCI_VERSION).tar.bz2:
+	$(WGET) http://www.kernel.org/pub/software/utils/pciutils/pciutils-$(LIBPCI_VERSION).tar.bz2
+
+LIBPCI_STAMPFILE=$(CROSS_ROOT)/$(GNU_TARGET_ARCH)-xen-elf/lib/libpci.a
+.PHONY: cross-libpci
+cross-libpci: $(LIBPCI_STAMPFILE)
+$(LIBPCI_STAMPFILE): pciutils-$(LIBPCI_VERSION).tar.bz2 $(NEWLIB_STAMPFILE) $(ZLIB_STAMPFILE)
+	tar xjf $<
+	( cd pciutils-$(LIBPCI_VERSION) && \
+	  cp ../libpci.config.h lib/config.h && \
+	  echo '#define PCILIB_VERSION "$(LIBPCI_VERSION)"' >> lib/config.h && \
+	  cp ../libpci.config.mak lib/config.mk && \
+	  $(MAKE) CC="$(GNU_TARGET_ARCH)-xen-elf-gcc $(TARGET_CFLAGS)" lib/libpci.a && \
+	  $(INSTALL_DATA) lib/libpci.a $(CROSS_PREFIX)/$(GNU_TARGET_ARCH)-xen-elf/lib/ && \
+	  $(INSTALL_DIR) $(CROSS_PREFIX)/$(GNU_TARGET_ARCH)-xen-elf/include/pci && \
+	  $(INSTALL_DATA) lib/{config,header,pci,types}.h $(CROSS_PREFIX)/$(GNU_TARGET_ARCH)-xen-elf/include/pci/ \
+	)
+
+######
+# lwIP
+######
+
+lwip:
+	cvs -z 9 -d :pserver:anonymous@cvs.savannah.nongnu.org:/sources/lwip co -D $(LWIP_DATE) lwip
+
+#######
+# Links
+#######
+
+.PHONY: $(CROSS_ROOT)
+$(CROSS_ROOT): cross-newlib cross-zlib cross-libpci
+
+.PHONY: mk-symlinks
+mk-symlinks:
+	[ -h include ] || ln -sf ../tools/include .
+	mkdir -p libxc
+	[ -h libxc/Makefile ] || ( cd libxc && \
+	  ln -sf ../../tools/libxc/*.h . && \
+	  ln -sf ../../tools/libxc/*.c . && \
+	  ln -sf ../../tools/libxc/Makefile . )
+	mkdir -p libxc/$(XEN_TARGET_ARCH)
+	[ -h libxc/$(XEN_TARGET_ARCH) ] || ( cd libxc/$(XEN_TARGET_ARCH) && \
+	  ln -sf ../../tools/libxc/$(XEN_TARGET_ARCH)/*.c . && \
+	  ln -sf ../../tools/libxc/$(XEN_TARGET_ARCH)/*.h . && \
+	  ln -sf ../../tools/libxc/$(XEN_TARGET_ARCH)/Makefile . )
+	mkdir -p ioemu
+	[ -h ioemu/Makefile ] || ( cd ioemu && \
+	  ln -sf ../../tools/ioemu/* . && \
+	  ([ ! -h config-host.h ] || rm -f config-host.h) && \
+	  ([ ! -h config-host.mak ] || rm -f config-host.mak) )
+	[ -h mini-os ] || ln -sf ../extras/mini-os .
+
+#######
+# libxc
+#######
+
+.PHONY: libxc
+libxc: cross-zlib mk-symlinks
+	$(MAKE) -C $@
+
+#######
+# ioemu
+#######
+
+.PHONY: ioemu
+ioemu: cross-zlib cross-libpci mk-symlinks libxc
+	[ -f ioemu/config-host.mak ] || \
+	  ( cd ioemu ; XEN_TARGET_ARCH=$(XEN_TARGET_ARCH) sh configure --prefix=/usr --enable-stubdom $(IOEMU_OPTIONS))
+	$(MAKE) -C ioemu LWIPDIR=$(CURDIR)/lwip
+
+######
+# caml
+######
+
+.PHONY: caml
+caml:
+	$(MAKE) -C $@
+
+########
+# minios
+########
+
+.PHONY: qemu-stubdom
+qemu-stubdom: mk-symlinks lwip libxc ioemu
+	$(MAKE) -C mini-os LWIPDIR=$(CURDIR)/lwip QEMUDIR=$(CURDIR)/ioemu
+
+.PHONY: caml-stubdom
+caml-stubdom: mk-symlinks lwip libxc cross-libpci caml
+	$(MAKE) -C mini-os LWIPDIR=$(CURDIR)/lwip CAMLDIR=$(CURDIR)/caml
+
+#########
+# install
+#########
+
+install: mini-os/mini-os.gz
+	$(INSTALL_PROG) stubdom-dm "$(DESTDIR)/usr/lib/xen/bin"
+	$(INSTALL_PROG) mini-os/mini-os.gz "$(DESTDIR)/usr/lib/xen/boot/stubdom.gz"
+
+#######
+# clean
+#######
+
+# Only clean the libxc/ioemu/mini-os part
+.PHONY: clean
+clean:
+	-$(MAKE) -C mini-os LWIPDIR=$(CURDIR)/lwip clean
+	$(MAKE) -C caml clean
+	rm -fr libxc ioemu mini-os include
+
+# clean the cross-compilation result
+.PHONY: crossclean
+crossclean: clean
+	rm -fr $(CROSS_ROOT)
+	rm -fr binutils.build gcc.build newlib.build
+	rm -fr zlib-$(ZLIB_VERSION) pciutils-$(LIBPCI_VERSION)
+
+# clean patched sources
+.PHONY: patchclean
+patchclean: crossclean
+	rm -fr binutils-$(BINUTILS_VERSION)
+	rm -fr gcc-$(GCC_VERSION)
+	rm -fr newlib
+	rm -fr lwip
+
+# clean downloads
+.PHONY: downloadclean
+downloadclean: patchclean
+	rm -f binutils-$(BINUTILS_VERSION).tar.bz2
+	rm -f gcc-$(GCC_VERSION).tar.bz2
+	rm -f zlib-$(ZLIB_VERSION).tar.gz
+	rm -f pciutils-$(LIBPCI_VERSION).tar.bz2
+
+.PHONY: distclean
+distclean: downloadclean