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|
#!/usr/bin/perl
# IBM_PROLOG_BEGIN_TAG
# This is an automatically generated prolog.
#
# $Source: src/build/debug/Hostboot/AutoIpl.pm $
#
# OpenPOWER HostBoot Project
#
# COPYRIGHT International Business Machines Corp. 2012,2014
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied. See the License for the specific language governing
# permissions and limitations under the License.
#
# IBM_PROLOG_END_TAG
use strict;
package Hostboot::AutoIpl;
use Exporter;
our @EXPORT_OK = ('main');
use constant PRINTK_SAMPLING => 50;
use constant NUM_CLOCK_CYCLES => 25000;
use constant MAX_NUM_CONT_TRACE_CTL_STRUCT => 2;
use constant CONT_TRACE_CTL_STRUCT_SIZE => 16;
use constant CONT_TRACE_DISABLE_FLAG_OFFSET => MAX_NUM_CONT_TRACE_CTL_STRUCT * CONT_TRACE_CTL_STRUCT_SIZE;
use File::Temp ('tempfile');
sub main
{
my ($packName,$args) = @_;
#userDisplay("args fsp-trace ".$args->{"fsp-trace"}."\n");
#userDisplay("args with-file-names ".$args->{"with-file-names"}."\n");
#userDisplay("args num-clk-cycles ".$args->{"num-clk-cycles"}."\n");
# Ensure environment is in the proper state for running instructions.
if (!::readyForInstructions())
{
::userDisplay "Cannot execute while unable to run instructions.\n";
return;
}
# retrieve the Information of the Continous Trace Trigger Info structure
my ($symAddr, $symSize) =
::findSymbolAddress("TRACE::g_cont_trace_trigger_info");
if (not defined $symAddr)
{
::userDisplay "Cannot find symbol.\n"; die;
}
my $disable = 0;
if (defined $args->{"enable-cont-trace"})
{
#my $disable = ::read64($symAddr + CONT_TRACE_DISABLE_FLAG_OFFSET);
#::userDisplay("Cont Trace Disable Flag read = $disable\n");
::write64($symAddr + CONT_TRACE_DISABLE_FLAG_OFFSET, 0);
#$disable = ::read64($symAddr + CONT_TRACE_DISABLE_FLAG_OFFSET);
#::userDisplay("Cont Trace Disable Flag after reset = $disable\n");
# truncate tracMERG to 0
system( "cp /dev/null tracMERG" );
return;
}
else
{
my $disable = ::read64($symAddr + CONT_TRACE_DISABLE_FLAG_OFFSET);
#::userDisplay("Cont Trace Disable Flag after reset = $disable\n");
}
# set the number of clock cycles
my $cycles = NUM_CLOCK_CYCLES;
if (defined $args->{"num-clk-cycles"})
{
$cycles = $args->{"num-clk-cycles"};
}
# Check if shutdown has been requested
my $result = ::getShutdownRequestStatus();
#::userDisplay("shutdown requested: $result\n");
if ($result)
{
::userDisplay("Shutdown has been reported.\n");
return;
}
# truncate printk.content to 0
system( "cp /dev/null printk.content" );
my $loop = 0;
my $excp = 0;
while (0 == $result)
{
if ( -e 'STOP' )
{
return;
}
if (::CheckXstopAttn() == 1)
{
::userDisplay("checkstop/attn occur.\n");
::FirCheck();
return;
}
$loop++;
# Display printk buffer's unshown messages
if (($loop % PRINTK_SAMPLING) == 0)
{
system("hb-printk --mute > /dev/null");
system("diff hb-Printk.output printk.content | sed -e 's/< //g' -e '1d'");
system("mv hb-Printk.output printk.content");
}
# run clock cycles
::executeInstrCycles($cycles,1);
# Display CIA
my $pc = ::getCIA();
::userDisplay("Loop $loop: $pc");
# Check for exception
if ($pc =~ m/.*0x0000000000000E4[04]/)
{
$excp++;
if ($excp == 5)
{
::userDisplay("Trapped in the exception loop.\n");
return;
}
}
else
{
$excp = 0;
}
if ($disable == 0)
{
# collect continuous traces
system("hb-ContTrace --mute > /dev/null");
system("cat hb-ContTrace.output >> tracMERG");
}
# check if shutdown has been requested
$result = ::getShutdownRequestStatus();
#::userDisplay("shutdown requested: $result\n");
}
if ($disable == 0)
{
# First, collect continuous traces from any triggered buffer
system("hb-ContTrace --mute > /dev/null");
system("cat hb-ContTrace.output >> tracMERG");
# Now, collect the partial continuous traces from untriggered buffer
system("hb-ContTrace --mute --last > /dev/null");
system("cat hb-ContTrace.output >> tracMERG");
}
#::userDisplay("\n\n Hostboot has shutdown\n\n");
}
sub helpInfo
{
my %info = (
name => "AutoIpl",
intro => ["IPL Hostboot and collect continuous trace."],
options => {
"fsp-trace=<path>" => ["Path to non-default fsp-trace utility."],
"with-file-names" => ["Trace statements will include file name of place the",
"trace was defined."],
"num-clk-cycles=<number>" => ["Number of clock cycles to before collecting traces."],
"enable-cont-trace" => ["Turn on continuous trace"],
},
);
}
|
