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_portable() { 32 f=$1 33 to=$2 34 if 35 grep '#include' "$f" | grep -v -e 'linux/virtio' \ 36 -e 'linux/types' \ 37 -e 'stdint' \ 38 -e 'linux/if_ether' \ 39 -e 'input-event-codes' \ 40 -e 'sys/' \ 41 -e 'pvrdma_verbs' \ 42 -e 'drm.h' \ 43 -e 'limits' \ 44 -e 'linux/kernel' \ 45 -e 'linux/sysinfo' \ 46 -e 'asm-generic/kvm_para' \ 47 > /dev/null 48 then 49 echo "Unexpected #include in input file $f". 50 exit 2 51 fi 52 53 header=$(basename "$f"); 54 sed -e 's/__aligned_u64/__u64 __attribute__((aligned(8)))/g' \ 55 -e 's/__u\([0-9][0-9]*\)/uint\1_t/g' \ 56 -e 's/u\([0-9][0-9]*\)/uint\1_t/g' \ 57 -e 's/__s\([0-9][0-9]*\)/int\1_t/g' \ 58 -e 's/__le\([0-9][0-9]*\)/uint\1_t/g' \ 59 -e 's/__be\([0-9][0-9]*\)/uint\1_t/g' \ 60 -e 's/"\(input-event-codes\.h\)"/"standard-headers\/linux\/\1"/' \ 61 -e 's/<linux\/\([^>]*\)>/"standard-headers\/linux\/\1"/' \ 62 -e 's/__bitwise//' \ 63 -e 's/__attribute__((packed))/QEMU_PACKED/' \ 64 -e 's/__inline__/inline/' \ 65 -e 's/__BITS_PER_LONG/HOST_LONG_BITS/' \ 66 -e '/\"drm.h\"/d' \ 67 -e '/sys\/ioctl.h/d' \ 68 -e 's/SW_MAX/SW_MAX_/' \ 69 -e 's/atomic_t/int/' \ 70 -e 's/__kernel_long_t/long/' \ 71 -e 's/__kernel_ulong_t/unsigned long/' \ 72 -e 's/struct ethhdr/struct eth_header/' \ 73 -e '/\#define _LINUX_ETHTOOL_H/a \\n\#include "net/eth.h"' \ 74 "$f" > "$to/$header"; 75} 76 77# This will pick up non-directories too (eg "Kconfig") but we will 78# ignore them in the next loop. 79ARCHLIST=$(cd "$linux/arch" && echo *) 80 81for arch in $ARCHLIST; do 82 # Discard anything which isn't a KVM-supporting architecture 83 if ! [ -e "$linux/arch/$arch/include/asm/kvm.h" ] && 84 ! [ -e "$linux/arch/$arch/include/uapi/asm/kvm.h" ] ; then 85 continue 86 fi 87 88 if [ "$arch" = x86 ]; then 89 arch_var=SRCARCH 90 else 91 arch_var=ARCH 92 fi 93 94 make -C "$linux" INSTALL_HDR_PATH="$tmpdir" $arch_var=$arch headers_install 95 96 rm -rf "$output/linux-headers/asm-$arch" 97 mkdir -p "$output/linux-headers/asm-$arch" 98 for header in kvm.h unistd.h bitsperlong.h; do 99 cp "$tmpdir/include/asm/$header" "$output/linux-headers/asm-$arch" 100 done 101 102 if [ $arch = mips ]; then 103 cp "$tmpdir/include/asm/sgidefs.h" "$output/linux-headers/asm-mips/" 104 fi 105 106 rm -rf "$output/include/standard-headers/asm-$arch" 107 mkdir -p "$output/include/standard-headers/asm-$arch" 108 if [ $arch = s390 ]; then 109 cp_portable "$tmpdir/include/asm/virtio-ccw.h" "$output/include/standard-headers/asm-s390/" 110 cp "$tmpdir/include/asm/unistd_32.h" "$output/linux-headers/asm-s390/" 111 cp "$tmpdir/include/asm/unistd_64.h" "$output/linux-headers/asm-s390/" 112 fi 113 if [ $arch = arm ]; then 114 cp "$tmpdir/include/asm/unistd-eabi.h" "$output/linux-headers/asm-arm/" 115 cp "$tmpdir/include/asm/unistd-oabi.h" "$output/linux-headers/asm-arm/" 116 cp "$tmpdir/include/asm/unistd-common.h" "$output/linux-headers/asm-arm/" 117 fi 118 if [ $arch = x86 ]; then 119 cp "$tmpdir/include/asm/unistd_32.h" "$output/linux-headers/asm-x86/" 120 cp "$tmpdir/include/asm/unistd_x32.h" "$output/linux-headers/asm-x86/" 121 cp "$tmpdir/include/asm/unistd_64.h" "$output/linux-headers/asm-x86/" 122 cp_portable "$tmpdir/include/asm/kvm_para.h" "$output/include/standard-headers/asm-$arch" 123 # Remove everything except the macros from bootparam.h avoiding the 124 # unnecessary import of several video/ist/etc headers 125 sed -e '/__ASSEMBLY__/,/__ASSEMBLY__/d' \ 126 "$tmpdir/include/asm/bootparam.h" > "$tmpdir/bootparam.h" 127 cp_portable "$tmpdir/bootparam.h" \ 128 "$output/include/standard-headers/asm-$arch" 129 fi 130done 131 132rm -rf "$output/linux-headers/linux" 133mkdir -p "$output/linux-headers/linux" 134for header in kvm.h vfio.h vfio_ccw.h vhost.h \ 135 psci.h psp-sev.h userfaultfd.h; do 136 cp "$tmpdir/include/linux/$header" "$output/linux-headers/linux" 137done 138 139rm -rf "$output/linux-headers/asm-generic" 140mkdir -p "$output/linux-headers/asm-generic" 141for header in unistd.h bitsperlong.h; do 142 cp "$tmpdir/include/asm-generic/$header" "$output/linux-headers/asm-generic" 143done 144 145if [ -L "$linux/source" ]; then 146 cp "$linux/source/COPYING" "$output/linux-headers" 147else 148 cp "$linux/COPYING" "$output/linux-headers" 149fi 150 151# Recent kernel sources split the copyright/license info into multiple 152# files, which we need to copy. This set of licenses is the set that 153# are referred to by SPDX lines in the headers we currently copy. 154# We don't copy the Documentation/process/license-rules.rst which 155# is also referred to by COPYING, since it's explanatory rather than license. 156if [ -d "$linux/LICENSES" ]; then 157 mkdir -p "$output/linux-headers/LICENSES/preferred" \ 158 "$output/linux-headers/LICENSES/exceptions" 159 for l in preferred/GPL-2.0 preferred/BSD-2-Clause preferred/BSD-3-Clause \ 160 exceptions/Linux-syscall-note; do 161 cp "$linux/LICENSES/$l" "$output/linux-headers/LICENSES/$l" 162 done 163fi 164 165cat <<EOF >$output/linux-headers/linux/virtio_config.h 166#include "standard-headers/linux/virtio_config.h" 167EOF 168cat <<EOF >$output/linux-headers/linux/virtio_ring.h 169#include "standard-headers/linux/virtio_ring.h" 170EOF 171 172rm -rf "$output/include/standard-headers/linux" 173mkdir -p "$output/include/standard-headers/linux" 174for i in "$tmpdir"/include/linux/*virtio*.h \ 175 "$tmpdir/include/linux/qemu_fw_cfg.h" \ 176 "$tmpdir/include/linux/input.h" \ 177 "$tmpdir/include/linux/input-event-codes.h" \ 178 "$tmpdir/include/linux/pci_regs.h" \ 179 "$tmpdir/include/linux/ethtool.h" "$tmpdir/include/linux/kernel.h" \ 180 "$tmpdir/include/linux/sysinfo.h"; do 181 cp_portable "$i" "$output/include/standard-headers/linux" 182done 183mkdir -p "$output/include/standard-headers/drm" 184cp_portable "$tmpdir/include/drm/drm_fourcc.h" \ 185 "$output/include/standard-headers/drm" 186 187rm -rf "$output/include/standard-headers/drivers/infiniband/hw/vmw_pvrdma" 188mkdir -p "$output/include/standard-headers/drivers/infiniband/hw/vmw_pvrdma" 189 190# Remove the unused functions from pvrdma_verbs.h avoiding the unnecessary 191# import of several infiniband/networking/other headers 192tmp_pvrdma_verbs="$tmpdir/pvrdma_verbs.h" 193# Parse the entire file instead of single lines to match 194# function declarations expanding over multiple lines 195# and strip the declarations starting with pvrdma prefix. 196sed -e '1h;2,$H;$!d;g' -e 's/[^};]*pvrdma[^(| ]*([^)]*);//g' \ 197 "$linux/drivers/infiniband/hw/vmw_pvrdma/pvrdma_verbs.h" > \ 198 "$tmp_pvrdma_verbs"; 199 200for i in "$linux/drivers/infiniband/hw/vmw_pvrdma/pvrdma_ring.h" \ 201 "$linux/drivers/infiniband/hw/vmw_pvrdma/pvrdma_dev_api.h" \ 202 "$tmp_pvrdma_verbs"; do \ 203 cp_portable "$i" \ 204 "$output/include/standard-headers/drivers/infiniband/hw/vmw_pvrdma/" 205done 206 207rm -rf "$output/include/standard-headers/rdma/" 208mkdir -p "$output/include/standard-headers/rdma/" 209for i in "$tmpdir/include/rdma/vmw_pvrdma-abi.h"; do 210 cp_portable "$i" \ 211 "$output/include/standard-headers/rdma/" 212done 213 214cat <<EOF >$output/include/standard-headers/linux/types.h 215/* For QEMU all types are already defined via osdep.h, so this 216 * header does not need to do anything. 217 */ 218EOF 219cat <<EOF >$output/include/standard-headers/linux/if_ether.h 220#define ETH_ALEN 6 221EOF 222 223rm -rf "$tmpdir" 224