1#!/bin/sh
2#
3# SPDX-License-Identifier: BSD-3-Clause
4#
5# Copyright © 2019 Keith Packard
6#
7# Redistribution and use in source and binary forms, with or without
8# modification, are permitted provided that the following conditions
9# are met:
10#
11# 1. Redistributions of source code must retain the above copyright
12#    notice, this list of conditions and the following disclaimer.
13#
14# 2. Redistributions in binary form must reproduce the above
15#    copyright notice, this list of conditions and the following
16#    disclaimer in the documentation and/or other materials provided
17#    with the distribution.
18#
19# 3. Neither the name of the copyright holder nor the names of its
20#    contributors may be used to endorse or promote products derived
21#    from this software without specific prior written permission.
22#
23# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
24# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
25# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
26# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
27# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
28# INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
29# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
30# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
32# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
33# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
34# OF THE POSSIBILITY OF SUCH DAMAGE.
35#
36
37qemu="qemu-system-arm"
38
39# select the program
40elf="$1"
41shift
42
43cpu="cortex-m7"
44machine=unknown
45memory=
46
47#
48# Select a QEMU machine based on the CPU
49#
50case "$cpu" in
51
52    # mps2-an385 offers a cortex-m3 processor
53    cortex-m3)
54	machine="mps2-an385"
55	;;
56
57    # Maybe qemu upstream will take this machine
58    # which supports all Cortex-M processors
59    cortex-m*)
60	machine=virtm
61	;;
62
63    # The 'none' machine supports all non-M
64    # processors
65    ti925t|arm946|cortex-a*)
66	machine=none
67	memory="-m 1G"
68	;;
69
70esac
71
72#
73# Make sure the target machine is supported by qemu
74#
75if "$qemu" -machine help | grep -q "^$machine "; then
76    :
77else
78    echo "Skipping $elf" unsupported machine
79    exit 77
80fi
81
82# Map stdio to a multiplexed character device so we can use it
83# for the monitor and semihosting output
84
85chardev=stdio,mux=on,id=stdio0
86
87# Point the semihosting driver at our new chardev
88
89semi=enable=on,chardev=stdio0
90
91input=""
92
93case "$1" in
94    --)
95	semi="$semi",arg="$2"
96	shift
97	shift
98	;;
99    -*|"")
100	;;
101    *)
102	semi="$semi",arg="$1"
103	input="$1"
104	shift
105	;;
106esac
107
108# Disable monitor
109
110mon=none
111
112# Disable serial
113
114serial=none
115
116# shellcheck disable=SC2086
117echo "$input" | "$qemu" $memory \
118      -chardev "$chardev" \
119      -semihosting-config "$semi" \
120      -monitor "$mon" \
121      -serial "$serial" \
122      -machine "$machine",accel=tcg \
123      -cpu "$cpu" \
124      -device loader,file=$elf,cpu-num=0 \
125      -nographic \
126      "$@"
127