File kvm-qemu-pre11-multiboot-4.patch of Package kvm

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File kvm-qemu-pre11-multiboot-4.patch of Package kvm

From 253d0942fac33c5c15c9a7f8657f55f125dc5816 Mon Sep 17 00:00:00 2001
From: Alexander Graf <agraf@suse.de>
Date: Mon, 29 Jun 2009 15:37:40 +0200
Subject: [PATCH 4/5] Multiboot build system v4

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 <agraf@suse.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
---
 Makefile                    |   12 +++++--
 configure                   |    9 ++++-
 pc-bios/multiboot.bin       |  Bin 0 -> 512 bytes
 pc-bios/optionrom/Makefile  |   48 ++++++++++++++++++++++++++
 pc-bios/optionrom/signrom.c |   79 +++++++++++++++++++++++++++++++++++++++++++
 5 files changed, 144 insertions(+), 4 deletions(-)
 create mode 100644 pc-bios/multiboot.bin
 create mode 100644 pc-bios/optionrom/Makefile
 create mode 100644 pc-bios/optionrom/signrom.c

Index: qemu-kvm-0.10.5/Makefile
===================================================================
--- qemu-kvm-0.10.5.orig/Makefile
+++ qemu-kvm-0.10.5/Makefile
@@ -34,7 +34,7 @@ ifdef CONFIG_WIN32
 LIBS+=-lwinmm -lws2_32 -liphlpapi
 endif
 
-all: $(TOOLS) $(DOCS) recurse-all
+all: $(TOOLS) $(DOCS) roms recurse-all
 
 SUBDIR_RULES=$(patsubst %,subdir-%, $(TARGET_DIRS))
 
@@ -199,7 +199,7 @@ clean:
 	rm -f *.o *.d *.a $(TOOLS) TAGS cscope.* *.pod *~ */*~
 	rm -f slirp/*.o slirp/*.d audio/*.o audio/*.d
 	$(MAKE) -C tests clean
-	for d in $(TARGET_DIRS); do \
+	for d in $(TARGET_DIRS) $(ROMS); do \
 	$(MAKE) -C $$d $@ || exit 1 ; \
         done
 
@@ -220,10 +220,16 @@ video.x openbios-sparc32 openbios-sparc6
 pxe-ne2k_pci.bin pxe-rtl8139.bin pxe-pcnet.bin pxe-e1000.bin \
 bamboo.dtb
 BLOBS += extboot.bin
+BLOBS += multiboot.bin
 else
 BLOBS=
 endif
 
+roms:
+	for d in $(ROMS); do \
+	$(MAKE) -C $$d || exit 1 ; \
+        done
+
 install-doc: $(DOCS)
 	mkdir -p "$(DESTDIR)$(docdir)"
 	$(INSTALL) -m 644 qemu-doc.html  qemu-tech.html "$(DESTDIR)$(docdir)"
Index: qemu-kvm-0.10.5/configure
===================================================================
--- qemu-kvm-0.10.5.orig/configure
+++ qemu-kvm-0.10.5/configure
@@ -1594,6 +1594,12 @@ if test `expr "$target_list" : ".*softmm
 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
+
 test -f ${config_h}~ && cmp -s $config_h ${config_h}~ && mv ${config_h}~ $config_h
 
 for target in $target_list; do
@@ -1950,11 +1956,12 @@ done # for target in $targets
 
 # build tree in object directory if source path is different from current one
 if test "$source_path_used" = "yes" ; then
-    DIRS="tests tests/cris slirp audio kvm/libkvm"
+    DIRS="tests tests/cris slirp audio kvm/libkvm pc-bios/optionrom"
     FILES="Makefile tests/Makefile"
     FILES="$FILES tests/cris/Makefile tests/cris/.gdbinit"
     FILES="$FILES tests/test-mmap.c"
     FILES="$FILES kvm/libkvm/Makefile"
+    FILES="$FILES pc-bios/optionrom/Makefile"
     for dir in $DIRS ; do
             mkdir -p $dir
     done
Index: qemu-kvm-0.10.5/pc-bios/optionrom/Makefile
===================================================================
--- /dev/null
+++ qemu-kvm-0.10.5/pc-bios/optionrom/Makefile
@@ -0,0 +1,48 @@
+all: build-all
+
+include ../../config-host.mak
+
+VPATH=$(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 *~
Index: qemu-kvm-0.10.5/pc-bios/optionrom/signrom.c
===================================================================
--- /dev/null
+++ qemu-kvm-0.10.5/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 <aliguori@us.ibm.com>
+ */
+
+#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;
+}
Index: qemu-kvm-0.10.5/qemu-doc.texi
===================================================================
--- qemu-kvm-0.10.5.orig/qemu-doc.texi
+++ qemu-kvm-0.10.5/qemu-doc.texi
@@ -910,13 +910,14 @@ Add ACPI table with specified header fie
 @end table
 
 Linux boot specific: When using these options, you can use a given
-Linux kernel without installing it in the disk image. It can be useful
-for easier testing of various kernels.
+Linux or Multiboot kernel without installing it in the disk image.
+It can be useful for easier testing of various kernels.
 
 @table @option
 
 @item -kernel @var{bzImage}
-Use @var{bzImage} as kernel image.
+Use @var{bzImage} as kernel image. The kernel can be either a Linux kernel
+on in multiboot format.
 
 @item -append @var{cmdline}
 Use @var{cmdline} as kernel command line
@@ -924,6 +925,13 @@ Use @var{cmdline} as kernel command line
 @item -initrd @var{file}
 Use @var{file} as initial ram disk.
 
+@item -initrd "@var{file1} arg=foo,@var{file2}"
+
+This syntax is only available with multiboot.
+
+Use @var{file1} and @var{file2} as modules and pass arg=foo as parameter to the
+first module.
+
 @end table
 
 Debug/Expert options:
Index: qemu-kvm-0.10.5/hw/fw_cfg.h
===================================================================
--- qemu-kvm-0.10.5.orig/hw/fw_cfg.h
+++ qemu-kvm-0.10.5/hw/fw_cfg.h
@@ -10,6 +10,10 @@
 #define FW_CFG_MACHINE_ID       0x06
 #define FW_CFG_MAX_ENTRY        0x10
 
+#define FW_CFG_INITRD_ADDR      0x0a
+#define FW_CFG_INITRD_SIZE      0x0b
+#define FW_CFG_KERNEL_ADDR      0x07
+
 #define FW_CFG_WRITE_CHANNEL    0x4000
 #define FW_CFG_ARCH_LOCAL       0x8000
 #define FW_CFG_ENTRY_MASK       ~(FW_CFG_WRITE_CHANNEL | FW_CFG_ARCH_LOCAL)

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File kvm-qemu-pre11-multiboot-4.patch of Package kvm

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