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 "$from" -name '*virtio*h') 35 if [ "$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 'linux/if_ether' \ 43 > /dev/null 44 then 45 echo "Unexpected #include in input file $f". 46 exit 2 47 fi 48 49 header=$(basename "$f"); 50 sed -e 's/__u\([0-9][0-9]*\)/uint\1_t/g' \ 51 -e 's/__le\([0-9][0-9]*\)/uint\1_t/g' \ 52 -e 's/__be\([0-9][0-9]*\)/uint\1_t/g' \ 53 -e 's/<linux\/\([^>]*\)>/"standard-headers\/linux\/\1"/' \ 54 -e 's/__bitwise__//' \ 55 -e 's/__attribute__((packed))/QEMU_PACKED/' \ 56 -e 's/__inline__/inline/' \ 57 "$f" > "$to/$header"; 58 done 59 fi 60} 61 62# This will pick up non-directories too (eg "Kconfig") but we will 63# ignore them in the next loop. 64ARCHLIST=$(cd "$linux/arch" && echo *) 65 66for arch in $ARCHLIST; do 67 # Discard anything which isn't a KVM-supporting architecture 68 if ! [ -e "$linux/arch/$arch/include/asm/kvm.h" ] && 69 ! [ -e "$linux/arch/$arch/include/uapi/asm/kvm.h" ] ; then 70 continue 71 fi 72 73 # Blacklist architectures which have KVM headers but are actually dead 74 if [ "$arch" = "ia64" ]; then 75 continue 76 fi 77 78 make -C "$linux" INSTALL_HDR_PATH="$tmpdir" SRCARCH=$arch headers_install 79 80 rm -rf "$output/linux-headers/asm-$arch" 81 mkdir -p "$output/linux-headers/asm-$arch" 82 for header in kvm.h kvm_para.h; do 83 cp "$tmpdir/include/asm/$header" "$output/linux-headers/asm-$arch" 84 done 85 if [ $arch = x86 ]; then 86 cp "$tmpdir/include/asm/hyperv.h" "$output/linux-headers/asm-x86" 87 fi 88 if [ $arch = powerpc ]; then 89 cp "$tmpdir/include/asm/epapr_hcalls.h" "$output/linux-headers/asm-powerpc/" 90 fi 91 92 cp_virtio "$tmpdir/include/asm" "$output/include/standard-headers/asm-$arch" 93done 94 95rm -rf "$output/linux-headers/linux" 96mkdir -p "$output/linux-headers/linux" 97for header in kvm.h kvm_para.h vfio.h vhost.h \ 98 psci.h; do 99 cp "$tmpdir/include/linux/$header" "$output/linux-headers/linux" 100done 101rm -rf "$output/linux-headers/asm-generic" 102mkdir -p "$output/linux-headers/asm-generic" 103for header in kvm_para.h; do 104 cp "$tmpdir/include/asm-generic/$header" "$output/linux-headers/asm-generic" 105done 106if [ -L "$linux/source" ]; then 107 cp "$linux/source/COPYING" "$output/linux-headers" 108else 109 cp "$linux/COPYING" "$output/linux-headers" 110fi 111 112cat <<EOF >$output/linux-headers/linux/virtio_config.h 113#include "standard-headers/linux/virtio_config.h" 114EOF 115cat <<EOF >$output/linux-headers/linux/virtio_ring.h 116#include "standard-headers/linux/virtio_ring.h" 117EOF 118 119cp_virtio "$tmpdir/include/linux/" "$output/include/standard-headers/linux" 120 121cat <<EOF >$output/include/standard-headers/linux/types.h 122#include <stdint.h> 123#include "qemu/compiler.h" 124EOF 125cat <<EOF >$output/include/standard-headers/linux/if_ether.h 126#define ETH_ALEN 6 127EOF 128 129rm -rf "$tmpdir" 130