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|
#!/usr/bin/perl
# IBM_PROLOG_BEGIN_TAG
# This is an automatically generated prolog.
#
# $Source: src/build/debug/Hostboot/Dump.pm $
#
# OpenPOWER HostBoot Project
#
# Contributors Listed Below - COPYRIGHT 2012,2017
# [+] International Business Machines Corp.
#
#
# 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::Dump;
use Exporter;
our @EXPORT_OK = ('main');
use Fcntl qw(SEEK_SET);
use constant MEMSTATE_NO_MEM => 0x0;
use constant MEMSTATE_HALF_CACHE => 0x4;
use constant MEMSTATE_REDUCED_CACHE => 0x8;
use constant MEMSTATE_FULL_CACHE => 0xa;
use constant MEMSTATE_MS_48MEG => 0x30;
use constant _KB => 1024;
use constant _MB => 1024 * 1024;
# Size of HBB PNOR partition without ECC, page aligned down, minus 4K header
use constant MAX_HBB_SIZE => (904 * _KB);
# Map the available memory at each state.
# *** NOTE: Keep in sync with fsp-memdump.sh and bootloaderif.H (MAX_HBB_SIZE)
our %memory_maps = (
MEMSTATE_NO_MEM() =>
# No memory has been initialized so we can only dump our static
# code load up to HBB size
[ 0, MAX_HBB_SIZE
],
MEMSTATE_HALF_CACHE() =>
# All of the first 4MB can now be read.
[ MAX_HBB_SIZE, ((1 * _MB) - MAX_HBB_SIZE),
1 * _MB, 1 * _MB,
2 * _MB, 1 * _MB,
3 * _MB, 1 * _MB
],
MEMSTATE_REDUCED_CACHE() =>
# Initial chips may have 2MB bad cache
[ 4 * _MB, 1 * _MB,
5 * _MB, 1 * _MB,
6 * _MB, 1 * _MB,
7 * _MB, 1 * _MB
],
MEMSTATE_FULL_CACHE() =>
# Full cache is 10MB
[ 8 * _MB, 1 * _MB,
9 * _MB, 1 * _MB
],
MEMSTATE_MS_48MEG() =>
# Add next 38MB after we expand to memory.
[ 10 * _MB, 38 * _MB
]
);
# Map the current state to the combined states available.
our %memory_states = (
MEMSTATE_NO_MEM() => [ MEMSTATE_NO_MEM ],
MEMSTATE_HALF_CACHE() => [ MEMSTATE_NO_MEM,
MEMSTATE_HALF_CACHE ],
MEMSTATE_REDUCED_CACHE() =>
[ MEMSTATE_NO_MEM,
MEMSTATE_HALF_CACHE, MEMSTATE_REDUCED_CACHE ],
MEMSTATE_FULL_CACHE() => [ MEMSTATE_NO_MEM,
MEMSTATE_HALF_CACHE, MEMSTATE_REDUCED_CACHE,
MEMSTATE_FULL_CACHE ],
MEMSTATE_MS_48MEG() => [ MEMSTATE_NO_MEM,
MEMSTATE_HALF_CACHE, MEMSTATE_REDUCED_CACHE,
MEMSTATE_FULL_CACHE, MEMSTATE_MS_48MEG ]
);
sub main
{
my ($packName,$args) = @_;
# Parse 'debug' option.
my $debug = 0;
if (defined $args->{"debug"})
{
$debug = 1;
}
# Check for a different output directory
my $outdir = "./";
if (defined $args->{"outdir"})
{
$outdir = $args->{"outdir"};
}
# Read the current memory state.
my $memstate_addr = ::read64(0x2000 + 0x8); # Read descriptor address.
$memstate_addr += 0x10; # Memory state is 3rd entry into descriptor.
my $memstate = ::read32($memstate_addr + 4); # only need bottom 32 bits
::userDisplay (sprintf "Current state is %x\n", $memstate) if $debug;
#Get current timestamp and open a corresponding file.
my $timeStamp = `date +%Y%m%d%H%M`;
chomp $timeStamp;
my $hbDumpFile = "$outdir\hbdump.$timeStamp";
::userDisplay "Dumping Hostboot to $hbDumpFile\n";
open( OUTFH, ">$hbDumpFile" ) or die "can't open $hbDumpFile: $!\n";
binmode(OUTFH);
# Read memory regions and output to file.
foreach my $state (@{$memory_states{int $memstate}})
{
my $regions = $memory_maps{int $state};
while (scalar(@{$regions}))
{
my $start = shift @{$regions};
my $length = shift @{$regions};
::userDisplay (sprintf "\t%x@%x\n", $length, $start) if $debug;
my $data = ::readData($start, $length);
seek OUTFH, $start, SEEK_SET;
print OUTFH $data;
}
}
# Close file.
close OUTFH;
#Check if hbDumpFile exists and is not empty
if (-s "$hbDumpFile" )
{
::userDisplay "\nHostBoot dump saved to $hbDumpFile.\n";
::userDisplay "Use the hb-dump-debug program to parse the dump.\n";
}
else
{
::userDisplay "\nWARNING: Cannot dump HB. Did you stop instructions?\n\n";
unlink $hbDumpFile;
}
}
sub helpInfo
{
my %info = (
name => "Dump",
intro => ["Dumps the entire Hostboot buffer to a file."],
options => {
"outdir=<path>" => ["Output directory for dump file"],
"debug" => ["More debug output."],
},
);
}
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