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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
bbd90802 13tmpdir=$(mktemp -d)
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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
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31cp_portable() {
32 f=$1
1ff0b555 33 to=$2
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34 if
35 grep '#include' "$f" | grep -v -e 'linux/virtio' \
36 -e 'linux/types' \
4d010861 37 -e 'linux/ioctl' \
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38 -e 'stdint' \
39 -e 'linux/if_ether' \
fff02bc0 40 -e 'input-event-codes' \
eddb4de3 41 -e 'sys/' \
e1c5f1f0 42 -e 'pvrdma_verbs' \
8e8ee850 43 -e 'drm.h' \
d3b7b374 44 -e 'limits' \
ab5ec23f 45 -e 'linux/const' \
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46 -e 'linux/kernel' \
47 -e 'linux/sysinfo' \
ec7b1080 48 -e 'asm-generic/kvm_para' \
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49 > /dev/null
50 then
51 echo "Unexpected #include in input file $f".
52 exit 2
1ff0b555 53 fi
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54
55 header=$(basename "$f");
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56 sed -e 's/__aligned_u64/__u64 __attribute__((aligned(8)))/g' \
57 -e 's/__u\([0-9][0-9]*\)/uint\1_t/g' \
e1c5f1f0 58 -e 's/u\([0-9][0-9]*\)/uint\1_t/g' \
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59 -e 's/__s\([0-9][0-9]*\)/int\1_t/g' \
60 -e 's/__le\([0-9][0-9]*\)/uint\1_t/g' \
61 -e 's/__be\([0-9][0-9]*\)/uint\1_t/g' \
fff02bc0 62 -e 's/"\(input-event-codes\.h\)"/"standard-headers\/linux\/\1"/' \
eddb4de3 63 -e 's/<linux\/\([^>]*\)>/"standard-headers\/linux\/\1"/' \
ed219c40 64 -e 's/__bitwise//' \
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65 -e 's/__attribute__((packed))/QEMU_PACKED/' \
66 -e 's/__inline__/inline/' \
9f2d175d 67 -e 's/__BITS_PER_LONG/HOST_LONG_BITS/' \
8e8ee850 68 -e '/\"drm.h\"/d' \
eddb4de3 69 -e '/sys\/ioctl.h/d' \
4d010861 70 -e '/linux\/ioctl.h/d' \
ac98fa84 71 -e 's/SW_MAX/SW_MAX_/' \
e1c5f1f0 72 -e 's/atomic_t/int/' \
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73 -e 's/__kernel_long_t/long/' \
74 -e 's/__kernel_ulong_t/unsigned long/' \
75 -e 's/struct ethhdr/struct eth_header/' \
76 -e '/\#define _LINUX_ETHTOOL_H/a \\n\#include "net/eth.h"' \
eddb4de3 77 "$f" > "$to/$header";
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78}
79
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80# This will pick up non-directories too (eg "Kconfig") but we will
81# ignore them in the next loop.
82ARCHLIST=$(cd "$linux/arch" && echo *)
83
84for arch in $ARCHLIST; do
85 # Discard anything which isn't a KVM-supporting architecture
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86 if ! [ -e "$linux/arch/$arch/include/asm/kvm.h" ] &&
87 ! [ -e "$linux/arch/$arch/include/uapi/asm/kvm.h" ] ; then
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88 continue
89 fi
90
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91 if [ "$arch" = x86 ]; then
92 arch_var=SRCARCH
93 else
94 arch_var=ARCH
95 fi
96
97 make -C "$linux" INSTALL_HDR_PATH="$tmpdir" $arch_var=$arch headers_install
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98
99 rm -rf "$output/linux-headers/asm-$arch"
100 mkdir -p "$output/linux-headers/asm-$arch"
0289881f 101 for header in kvm.h unistd.h bitsperlong.h mman.h; do
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102 cp "$tmpdir/include/asm/$header" "$output/linux-headers/asm-$arch"
103 done
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104
105 if [ $arch = mips ]; then
106 cp "$tmpdir/include/asm/sgidefs.h" "$output/linux-headers/asm-mips/"
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107 cp "$tmpdir/include/asm/unistd_o32.h" "$output/linux-headers/asm-mips/"
108 cp "$tmpdir/include/asm/unistd_n32.h" "$output/linux-headers/asm-mips/"
109 cp "$tmpdir/include/asm/unistd_n64.h" "$output/linux-headers/asm-mips/"
110 fi
111 if [ $arch = powerpc ]; then
112 cp "$tmpdir/include/asm/unistd_32.h" "$output/linux-headers/asm-powerpc/"
113 cp "$tmpdir/include/asm/unistd_64.h" "$output/linux-headers/asm-powerpc/"
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114 fi
115
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116 rm -rf "$output/include/standard-headers/asm-$arch"
117 mkdir -p "$output/include/standard-headers/asm-$arch"
118 if [ $arch = s390 ]; then
eddb4de3 119 cp_portable "$tmpdir/include/asm/virtio-ccw.h" "$output/include/standard-headers/asm-s390/"
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120 cp "$tmpdir/include/asm/unistd_32.h" "$output/linux-headers/asm-s390/"
121 cp "$tmpdir/include/asm/unistd_64.h" "$output/linux-headers/asm-s390/"
eddb4de3 122 fi
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123 if [ $arch = arm ]; then
124 cp "$tmpdir/include/asm/unistd-eabi.h" "$output/linux-headers/asm-arm/"
125 cp "$tmpdir/include/asm/unistd-oabi.h" "$output/linux-headers/asm-arm/"
126 cp "$tmpdir/include/asm/unistd-common.h" "$output/linux-headers/asm-arm/"
127 fi
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128 if [ $arch = arm64 ]; then
129 cp "$tmpdir/include/asm/sve_context.h" "$output/linux-headers/asm-arm64/"
130 fi
73aa529a 131 if [ $arch = x86 ]; then
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132 cp "$tmpdir/include/asm/unistd_32.h" "$output/linux-headers/asm-x86/"
133 cp "$tmpdir/include/asm/unistd_x32.h" "$output/linux-headers/asm-x86/"
134 cp "$tmpdir/include/asm/unistd_64.h" "$output/linux-headers/asm-x86/"
ec7b1080 135 cp_portable "$tmpdir/include/asm/kvm_para.h" "$output/include/standard-headers/asm-$arch"
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136 # Remove everything except the macros from bootparam.h avoiding the
137 # unnecessary import of several video/ist/etc headers
138 sed -e '/__ASSEMBLY__/,/__ASSEMBLY__/d' \
139 "$tmpdir/include/asm/bootparam.h" > "$tmpdir/bootparam.h"
140 cp_portable "$tmpdir/bootparam.h" \
141 "$output/include/standard-headers/asm-$arch"
73aa529a 142 fi
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143done
144
145rm -rf "$output/linux-headers/linux"
146mkdir -p "$output/linux-headers/linux"
84567ea7 147for header in kvm.h vfio.h vfio_ccw.h vfio_zdev.h vhost.h \
0289881f 148 psci.h psp-sev.h userfaultfd.h mman.h; do
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149 cp "$tmpdir/include/linux/$header" "$output/linux-headers/linux"
150done
ec7b1080 151
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152rm -rf "$output/linux-headers/asm-generic"
153mkdir -p "$output/linux-headers/asm-generic"
0289881f 154for header in unistd.h bitsperlong.h mman-common.h mman.h hugetlb_encode.h; do
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155 cp "$tmpdir/include/asm-generic/$header" "$output/linux-headers/asm-generic"
156done
157
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158if [ -L "$linux/source" ]; then
159 cp "$linux/source/COPYING" "$output/linux-headers"
160else
161 cp "$linux/COPYING" "$output/linux-headers"
162fi
163
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164# Recent kernel sources split the copyright/license info into multiple
165# files, which we need to copy. This set of licenses is the set that
166# are referred to by SPDX lines in the headers we currently copy.
167# We don't copy the Documentation/process/license-rules.rst which
168# is also referred to by COPYING, since it's explanatory rather than license.
169if [ -d "$linux/LICENSES" ]; then
170 mkdir -p "$output/linux-headers/LICENSES/preferred" \
171 "$output/linux-headers/LICENSES/exceptions"
172 for l in preferred/GPL-2.0 preferred/BSD-2-Clause preferred/BSD-3-Clause \
173 exceptions/Linux-syscall-note; do
174 cp "$linux/LICENSES/$l" "$output/linux-headers/LICENSES/$l"
175 done
176fi
177
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178cat <<EOF >$output/linux-headers/linux/virtio_config.h
179#include "standard-headers/linux/virtio_config.h"
180EOF
181cat <<EOF >$output/linux-headers/linux/virtio_ring.h
182#include "standard-headers/linux/virtio_ring.h"
183EOF
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184cat <<EOF >$output/linux-headers/linux/vhost_types.h
185#include "standard-headers/linux/vhost_types.h"
186EOF
1ff0b555 187
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188rm -rf "$output/include/standard-headers/linux"
189mkdir -p "$output/include/standard-headers/linux"
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190for i in "$tmpdir"/include/linux/*virtio*.h \
191 "$tmpdir/include/linux/qemu_fw_cfg.h" \
a62a9e19 192 "$tmpdir/include/linux/fuse.h" \
039d7c4d 193 "$tmpdir/include/linux/input.h" \
fff02bc0 194 "$tmpdir/include/linux/input-event-codes.h" \
4d010861 195 "$tmpdir/include/linux/udmabuf.h" \
d3b7b374 196 "$tmpdir/include/linux/pci_regs.h" \
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197 "$tmpdir/include/linux/ethtool.h" \
198 "$tmpdir/include/linux/const.h" \
199 "$tmpdir/include/linux/kernel.h" \
a0a6ef91 200 "$tmpdir/include/linux/vhost_types.h" \
d3b7b374 201 "$tmpdir/include/linux/sysinfo.h"; do
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202 cp_portable "$i" "$output/include/standard-headers/linux"
203done
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204mkdir -p "$output/include/standard-headers/drm"
205cp_portable "$tmpdir/include/drm/drm_fourcc.h" \
206 "$output/include/standard-headers/drm"
1ff0b555 207
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208rm -rf "$output/include/standard-headers/drivers/infiniband/hw/vmw_pvrdma"
209mkdir -p "$output/include/standard-headers/drivers/infiniband/hw/vmw_pvrdma"
210
211# Remove the unused functions from pvrdma_verbs.h avoiding the unnecessary
212# import of several infiniband/networking/other headers
213tmp_pvrdma_verbs="$tmpdir/pvrdma_verbs.h"
214# Parse the entire file instead of single lines to match
215# function declarations expanding over multiple lines
216# and strip the declarations starting with pvrdma prefix.
217sed -e '1h;2,$H;$!d;g' -e 's/[^};]*pvrdma[^(| ]*([^)]*);//g' \
218 "$linux/drivers/infiniband/hw/vmw_pvrdma/pvrdma_verbs.h" > \
219 "$tmp_pvrdma_verbs";
220
3aa1b7af 221for i in "$linux/drivers/infiniband/hw/vmw_pvrdma/pvrdma_dev_api.h" \
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222 "$tmp_pvrdma_verbs"; do \
223 cp_portable "$i" \
224 "$output/include/standard-headers/drivers/infiniband/hw/vmw_pvrdma/"
225done
226
227rm -rf "$output/include/standard-headers/rdma/"
228mkdir -p "$output/include/standard-headers/rdma/"
229for i in "$tmpdir/include/rdma/vmw_pvrdma-abi.h"; do
230 cp_portable "$i" \
231 "$output/include/standard-headers/rdma/"
232done
233
1ff0b555 234cat <<EOF >$output/include/standard-headers/linux/types.h
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235/* For QEMU all types are already defined via osdep.h, so this
236 * header does not need to do anything.
237 */
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238EOF
239cat <<EOF >$output/include/standard-headers/linux/if_ether.h
240#define ETH_ALEN 6
241EOF
242
87fdd476 243rm -rf "$tmpdir"