1#!/bin/sh -e 2# 3# Update Linux kernel headers QEMU requires from a specified kernel tree. 4# 5# Copyright (C) 2011 Siemens AG 6# 7# Authors: 8# Jan Kiszka <jan.kiszka@siemens.com> 9# 10# This work is licensed under the terms of the GNU GPL version 2. 11# See the COPYING file in the top-level directory. 12 13tmpdir=`mktemp -d` 14linux="$1" 15output="$2" 16 17if [ -z "$linux" ] || ! [ -d "$linux" ]; then 18 cat << EOF 19usage: update-kernel-headers.sh LINUX_PATH [OUTPUT_PATH] 20 21LINUX_PATH Linux kernel directory to obtain the headers from 22OUTPUT_PATH output directory, usually the qemu source tree (default: $PWD) 23EOF 24 exit 1 25fi 26 27if [ -z "$output" ]; then 28 output="$PWD" 29fi 30 31cp_virtio() { 32 from=$1 33 to=$2 34 virtio=$(find "$from" -name '*virtio*h' -o -name "input.h" -o -name "pci_regs.h") 35 if [ "$virtio" ]; then 36 rm -rf "$to" 37 mkdir -p "$to" 38 for f in $virtio; do 39 if 40 grep '#include' "$f" | grep -v -e 'linux/virtio' \ 41 -e 'linux/types' \ 42 -e 'stdint' \ 43 -e 'linux/if_ether' \ 44 -e 'sys/' \ 45 > /dev/null 46 then 47 echo "Unexpected #include in input file $f". 48 exit 2 49 fi 50 51 header=$(basename "$f"); 52 sed -e 's/__u\([0-9][0-9]*\)/uint\1_t/g' \ 53 -e 's/__s\([0-9][0-9]*\)/int\1_t/g' \ 54 -e 's/__le\([0-9][0-9]*\)/uint\1_t/g' \ 55 -e 's/__be\([0-9][0-9]*\)/uint\1_t/g' \ 56 -e 's/<linux\/\([^>]*\)>/"standard-headers\/linux\/\1"/' \ 57 -e 's/__bitwise__//' \ 58 -e 's/__attribute__((packed))/QEMU_PACKED/' \ 59 -e 's/__inline__/inline/' \ 60 -e '/sys\/ioctl.h/d' \ 61 "$f" > "$to/$header"; 62 done 63 fi 64} 65 66# This will pick up non-directories too (eg "Kconfig") but we will 67# ignore them in the next loop. 68ARCHLIST=$(cd "$linux/arch" && echo *) 69 70for arch in $ARCHLIST; do 71 # Discard anything which isn't a KVM-supporting architecture 72 if ! [ -e "$linux/arch/$arch/include/asm/kvm.h" ] && 73 ! [ -e "$linux/arch/$arch/include/uapi/asm/kvm.h" ] ; then 74 continue 75 fi 76 77 # Blacklist architectures which have KVM headers but are actually dead 78 if [ "$arch" = "ia64" ]; then 79 continue 80 fi 81 82 make -C "$linux" INSTALL_HDR_PATH="$tmpdir" SRCARCH=$arch headers_install 83 84 rm -rf "$output/linux-headers/asm-$arch" 85 mkdir -p "$output/linux-headers/asm-$arch" 86 for header in kvm.h kvm_para.h; do 87 cp "$tmpdir/include/asm/$header" "$output/linux-headers/asm-$arch" 88 done 89 if [ $arch = x86 ]; then 90 cp "$tmpdir/include/asm/hyperv.h" "$output/linux-headers/asm-x86" 91 fi 92 if [ $arch = powerpc ]; then 93 cp "$tmpdir/include/asm/epapr_hcalls.h" "$output/linux-headers/asm-powerpc/" 94 fi 95 96 cp_virtio "$tmpdir/include/asm" "$output/include/standard-headers/asm-$arch" 97done 98 99rm -rf "$output/linux-headers/linux" 100mkdir -p "$output/linux-headers/linux" 101for header in kvm.h kvm_para.h vfio.h vhost.h \ 102 psci.h; do 103 cp "$tmpdir/include/linux/$header" "$output/linux-headers/linux" 104done 105rm -rf "$output/linux-headers/asm-generic" 106mkdir -p "$output/linux-headers/asm-generic" 107for header in kvm_para.h; do 108 cp "$tmpdir/include/asm-generic/$header" "$output/linux-headers/asm-generic" 109done 110if [ -L "$linux/source" ]; then 111 cp "$linux/source/COPYING" "$output/linux-headers" 112else 113 cp "$linux/COPYING" "$output/linux-headers" 114fi 115 116cat <<EOF >$output/linux-headers/linux/virtio_config.h 117#include "standard-headers/linux/virtio_config.h" 118EOF 119cat <<EOF >$output/linux-headers/linux/virtio_ring.h 120#include "standard-headers/linux/virtio_ring.h" 121EOF 122 123cp_virtio "$tmpdir/include/linux/" "$output/include/standard-headers/linux" 124 125cat <<EOF >$output/include/standard-headers/linux/types.h 126#include <stdint.h> 127#include "qemu/compiler.h" 128EOF 129cat <<EOF >$output/include/standard-headers/linux/if_ether.h 130#define ETH_ALEN 6 131EOF 132 133rm -rf "$tmpdir" 134