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[Qemu-devel] [PATCH 4/5] Multiboot build system v4
From: |
Alexander Graf |
Subject: |
[Qemu-devel] [PATCH 4/5] Multiboot build system v4 |
Date: |
Mon, 29 Jun 2009 15:37:40 +0200 |
In order to build the multiboot option rom, we need a Makefile and a tool
to sign the rom with.
Both are provided by this patch and mostly taken from the extboot source,
written by Anthony Liguori.
Once built, the resulting binary gets copied to pc-bios automatically.
Building also occurs automatically when on an x86 host.
Signed-off-by: Alexander Graf <address@hidden>
---
v4 changes:
- make build more generic (optionrom directory)
- enable building with split object dir
---
Makefile | 12 +++++--
configure | 9 ++++-
pc-bios/optionrom/Makefile | 48 ++++++++++++++++++++++++++
pc-bios/optionrom/signrom.c | 79 +++++++++++++++++++++++++++++++++++++++++++
4 files changed, 144 insertions(+), 4 deletions(-)
create mode 100644 pc-bios/optionrom/Makefile
create mode 100644 pc-bios/optionrom/signrom.c
diff --git a/Makefile b/Makefile
index a06c9bf..b5020cc 100644
--- a/Makefile
+++ b/Makefile
@@ -44,7 +44,7 @@ ifdef CONFIG_WIN32
LIBS+=-lwinmm -lws2_32 -liphlpapi
endif
-build-all: $(TOOLS) $(DOCS) recurse-all
+build-all: $(TOOLS) $(DOCS) roms recurse-all
config-host.mak: configure
ifneq ($(wildcard config-host.mak),)
@@ -261,7 +261,7 @@ clean:
rm -f slirp/*.o slirp/*.d audio/*.o audio/*.d block/*.o block/*.d
rm -f qemu-img-cmds.h
$(MAKE) -C tests clean
- for d in $(TARGET_DIRS) libhw32 libhw64; do \
+ for d in $(TARGET_DIRS) $(ROMS) libhw32 libhw64; do \
$(MAKE) -C $$d $@ || exit 1 ; \
done
@@ -280,11 +280,17 @@ ifdef INSTALL_BLOBS
BLOBS=bios.bin vgabios.bin vgabios-cirrus.bin ppc_rom.bin \
video.x openbios-sparc32 openbios-sparc64 openbios-ppc \
pxe-ne2k_pci.bin pxe-rtl8139.bin pxe-pcnet.bin pxe-e1000.bin \
-bamboo.dtb petalogix-s3adsp1800.dtb
+bamboo.dtb petalogix-s3adsp1800.dtb \
+multiboot.bin
else
BLOBS=
endif
+roms:
+ for d in $(ROMS); do \
+ $(MAKE) -C $$d || exit 1 ; \
+ done
+
install-doc: $(DOCS)
$(INSTALL_DIR) "$(DESTDIR)$(docdir)"
$(INSTALL_DATA) qemu-doc.html qemu-tech.html "$(DESTDIR)$(docdir)"
diff --git a/configure b/configure
index 33e3c41..1c925e0 100755
--- a/configure
+++ b/configure
@@ -1860,6 +1860,12 @@ if test `expr "$target_list" : ".*softmmu.*"` != 0 ; then
fi
echo "TOOLS=$tools" >> $config_mak
+roms=
+if test "$cpu" = "i386" -o "$cpu" = "x86_64" ; then
+ roms="pc-bios/optionrom"
+fi
+echo "ROMS=$roms" >> $config_mak
+
if test -f ${config_h}~ ; then
if cmp -s $config_h ${config_h}~ ; then
mv ${config_h}~ $config_h
@@ -2222,10 +2228,11 @@ done # for target in $targets
# build tree in object directory if source path is different from current one
if test "$source_path_used" = "yes" ; then
- DIRS="tests tests/cris slirp audio block"
+ DIRS="tests tests/cris slirp audio block pc-bios/optionrom"
FILES="Makefile tests/Makefile"
FILES="$FILES tests/cris/Makefile tests/cris/.gdbinit"
FILES="$FILES tests/test-mmap.c"
+ FILES="$FILES pc-bios/optionrom/Makefile"
for dir in $DIRS ; do
mkdir -p $dir
done
diff --git a/pc-bios/optionrom/Makefile b/pc-bios/optionrom/Makefile
new file mode 100644
index 0000000..c4a6f42
--- /dev/null
+++ b/pc-bios/optionrom/Makefile
@@ -0,0 +1,48 @@
+all: build-all
+
+include ../../config-host.mak
+
+VPATH=$(SRC_PATH)/pc-bios/optionrom
+OBJCOPY=objcopy
+
+# from kernel sources - scripts/Kbuild.include
+# try-run
+# Usage: option = $(call try-run, $(CC)...-o "$$TMP",option-ok,otherwise)
+# Exit code chooses option. "$$TMP" is can be used as temporary file and
+# is automatically cleaned up.
+try-run = $(shell set -e; \
+ TMP="$(TMPOUT).$$$$.tmp"; \
+ if ($(1)) >/dev/null 2>&1; \
+ then echo "$(2)"; \
+ else echo "$(3)"; \
+ fi; \
+ rm -f "$$TMP")
+
+# cc-option-yn
+# Usage: flag := $(call cc-option-yn,-march=winchip-c6)
+cc-option-yn = $(call try-run,\
+ $(CC) $(KBUILD_CFLAGS) $(1) -S -xc /dev/null -o "$$TMP",y,n)
+
+CFLAGS = -Wall -Wstrict-prototypes -Werror -fomit-frame-pointer -fno-builtin
+CFLAGS += -I$(SRC_PATH)
+ifeq ($(call cc-option-yn,-fno-stack-protector),y)
+CFLAGS += -fno-stack-protector
+endif
+
+build-all: multiboot.bin
+
+%.o: %.S
+ $(CC) $(CFLAGS) -o $@ -c $<
+
+%.img: %.o
+ $(LD) --oformat binary -Ttext 0 -o $@ $<
+
+%.bin: %.img signrom
+ ./signrom $< $@
+ cp $@ $(SRC_PATH)/pc-bios/
+
+signrom: signrom.c
+ $(CC) -o $@ -g -Wall $^
+
+clean:
+ $(RM) *.o *.img *.bin signrom *~
diff --git a/pc-bios/optionrom/signrom.c b/pc-bios/optionrom/signrom.c
new file mode 100644
index 0000000..fe8d677
--- /dev/null
+++ b/pc-bios/optionrom/signrom.c
@@ -0,0 +1,79 @@
+/*
+ * Extended Boot Option ROM
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * Copyright IBM Corporation, 2007
+ * Authors: Anthony Liguori <address@hidden>
+ */
+
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+
+int main(int argc, char **argv)
+{
+ FILE *fin, *fout;
+ char buffer[512], oldbuffer[512];
+ int i, size, lag = 0;
+ uint8_t sum = 0;
+
+ if (argc != 3) {
+ printf("Usage: %s ROM OUTPUT\n", argv[0]);
+ return 1;
+ }
+
+ fin = fopen(argv[1], "rb");
+ fout = fopen(argv[2], "wb");
+
+ if (fin == NULL || fout == NULL) {
+ fprintf(stderr, "Could not open input/output files\n");
+ return 1;
+ }
+
+ do {
+ size = fread(buffer, 512, 1, fin);
+ if (size == 1) {
+ for (i = 0; i < 512; i++)
+ sum += buffer[i];
+
+ if (lag) {
+ if (fwrite(oldbuffer, 512, 1, fout) != 1) {
+ fprintf(stderr, "Write failed\n");
+ return 1;
+ }
+ }
+ lag = 1;
+ memcpy(oldbuffer, buffer, 512);
+ }
+ } while (size == 1);
+
+ if (size != 0) {
+ fprintf(stderr, "Failed to read from input file\n");
+ return 1;
+ }
+
+ oldbuffer[511] = -sum;
+
+ if (fwrite(oldbuffer, 512, 1, fout) != 1) {
+ fprintf(stderr, "Failed to write to output file\n");
+ return 1;
+ }
+
+ fclose(fin);
+ fclose(fout);
+
+ return 0;
+}
--
1.6.0.2