1 #!/bin/sh
2 # SPDX-License-Identifier: GPL-2.0-only
3 #
4 # Copyright 2015, Daniel Axtens, IBM Corporati
5 #
6
7
8 # do we have ./getscom, ./putscom?
9 if [ -x ./getscom ] && [ -x ./putscom ]; then
10 GETSCOM=./getscom
11 PUTSCOM=./putscom
12 elif which getscom > /dev/null; then
13 GETSCOM=$(which getscom)
14 PUTSCOM=$(which putscom)
15 else
16 cat <<EOF
17 Can't find getscom/putscom in . or \$PATH.
18 See https://github.com/open-power/skiboot.
19 The tool is in external/xscom-utils
20 EOF
21 exit 1
22 fi
23
24 # We will get 8 HMI events per injection
25 # todo: deal with things being offline
26 expected_hmis=8
27 COUNT_HMIS() {
28 dmesg | grep -c 'Harmless Hypervisor Maint
29 }
30
31 # massively expand snooze delay, allowing inje
32 ppc64_cpu --smt-snooze-delay=1000000000
33
34 # when we exit, restore it
35 trap "ppc64_cpu --smt-snooze-delay=100" 0 1
36
37 # for each chip+core combination
38 # todo - less fragile parsing
39 grep -E -o 'OCC: Chip [0-9a-f]+ Core [0-9a-f]'
40 while read chipcore; do
41 chip=$(echo "$chipcore"|awk '{print $3
42 core=$(echo "$chipcore"|awk '{print $5
43 fir="0x1${core}013100"
44
45 # verify that Core FIR is zero as expe
46 if [ "$($GETSCOM -c 0x${chip} $fir)" !
47 echo "FIR was not zero before
48 echo "Result of $GETSCOM -c 0x
49 $GETSCOM -c 0x${chip} $fir
50 echo "If you get a -5 error, t
51 echo "Otherwise, try $PUTSCOM
52 exit 1
53 fi
54
55 # keep track of the number of HMIs han
56 old_hmis=$(COUNT_HMIS)
57
58 # do injection, adding a marker to dme
59 echo "Injecting HMI on core $core, chi
60 # inject a RegFile recoverable error
61 if ! $PUTSCOM -c 0x${chip} $fir 200000
62 echo "Error injecting. Abortin
63 exit 1
64 fi
65
66 # now we want to wait for all the HMIs
67 # we expect one per thread on the core
68 i=0;
69 new_hmis=$(COUNT_HMIS)
70 while [ $new_hmis -lt $((old_hmis + ex
71 echo "Seen $((new_hmis - old_hmis)
72 sleep 5;
73 i=$((i + 1))
74 new_hmis=$(COUNT_HMIS)
75 done
76 if [ $i = 12 ]; then
77 echo "Haven't seen expected $expec
78 exit 1
79 fi
80 echo "Processed $expected_hmis events;
81 echo ""
82 done
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