PXE: Refresh all PXE ROMs from the ipxe submodule

Add script to make this easy to repeat later.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>

pc-bios/README

@@ -18,16 +18,15 @@
   https://github.com/dgibson/SLOF, and the image currently in qemu is
   built from git tag qemu-slof-20110323.
 
-- The PXE roms come from Rom-o-Matic gPXE 0.9.9 with BANNER_TIMEOUT=0
-
-  e1000 8086:100E
-  eepro100 8086:1209 (also used for 8086:1229 and 8086:2449)
-  ns8390 1050:0940
-  pcnet32 1022:2000
-  rtl8139 10ec:8139
-  virtio 1af4:1000
-
-  http://rom-o-matic.net/
+- The PXE roms come from the iPXE project. Built with BANNER_TIME 0.
+  Sources available at http://ipxe.org.  Vendor:Device ID -> ROM mapping:
+
+	8086:100e -> pxe-e1000.rom
+	8086:1209 -> pxe-eepro100.rom
+	1050:0940 -> pxe-ne2k_pci.rom
+	1022:2000 -> pxe-pcnet.rom
+	10ec:8139 -> pxe-rtl8139.rom
+	1af4:1000 -> pxe-virtio.rom
 
 - The S390 zipl loader is an addition to the official IBM s390-tools
   package. That fork is maintained in its own git repository at:

scripts/refresh-pxe-roms.sh

@@ -0,0 +1,99 @@
+#!/bin/bash
+
+# PXE ROM build script
+#
+# 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, see <http://www.gnu.org/licenses/>.
+#
+# Copyright (C) 2011 Red Hat, Inc.
+#   Authors: Alex Williamson <alex.williamson@redhat.com>
+#
+# Usage: Run from root of qemu tree
+# ./scripts/refresh-pxe-roms.sh
+
+QEMU_DIR=$PWD
+ROM_DIR="pc-bios"
+BUILD_DIR="roms/ipxe"
+LOCAL_CONFIG="src/config/local/general.h"
+
+function cleanup ()
+{
+    if [ -n "$SAVED_CONFIG" ]; then
+        cp "$SAVED_CONFIG" "$BUILD_DIR"/"$LOCAL_CONFIG"
+        rm "$SAVED_CONFIG"
+    fi
+    cd "$QEMU_DIR"
+}
+
+function make_rom ()
+{
+    cd "$BUILD_DIR"/src
+
+    BUILD_LOG=$(mktemp)
+
+    echo Building "$2"...
+    make bin/"$1".rom > "$BUILD_LOG" 2>&1
+    if [ $? -ne 0 ]; then
+        echo Build failed
+        tail --lines=100 "$BUILD_LOG"
+        rm "$BUILD_LOG"
+        cleanup
+        exit 1
+    fi
+    rm "$BUILD_LOG"
+
+    cp bin/"$1".rom "$QEMU_DIR"/"$ROM_DIR"/"$2"
+
+    cd "$QEMU_DIR"
+}
+
+if [ ! -d "$QEMU_DIR"/"$ROM_DIR" ]; then
+    echo "error: can't find $ROM_DIR directory," \
+         "run me from the root of the qemu tree"
+    exit 1
+fi
+
+if [ ! -d "$BUILD_DIR"/src ]; then
+    echo "error: $BUILD_DIR not populated, try:"
+    echo "  git submodule init $BUILD_DIR"
+    echo "  git submodule update $BUILD_DIR"
+    exit 1
+fi
+
+if [ -e "$BUILD_DIR"/"$LOCAL_CONFIG" ]; then
+    SAVED_CONFIG=$(mktemp)
+    cp "$BUILD_DIR"/"$LOCAL_CONFIG" "$SAVED_CONFIG"
+fi
+
+echo "#undef BANNER_TIMEOUT" > "$BUILD_DIR"/"$LOCAL_CONFIG"
+echo "#define BANNER_TIMEOUT 0" >> "$BUILD_DIR"/"$LOCAL_CONFIG"
+
+IPXE_VERSION=$(cd "$BUILD_DIR" && git describe --tags)
+if [ -z "$IPXE_VERSION" ]; then
+    echo "error: unable to retrieve git version"
+    cleanup
+    exit 1
+fi
+
+echo "#undef PRODUCT_NAME" >> "$BUILD_DIR"/"$LOCAL_CONFIG"
+echo "#define PRODUCT_NAME \"iPXE $IPXE_VERSION\"" >> "$BUILD_DIR"/"$LOCAL_CONFIG"
+
+make_rom 8086100e pxe-e1000.rom
+make_rom 80861209 pxe-eepro100.rom
+make_rom 10500940 pxe-ne2k_pci.rom
+make_rom 10222000 pxe-pcnet.rom
+make_rom 10ec8139 pxe-rtl8139.rom
+make_rom 1af41000 pxe-virtio.rom
+
+echo done
+cleanup