--- /dev/null
+#!/usr/bin/perl -w
+
+#*****************************************************************************
+#!
+#! FILE NAME : boot_linux
+#!
+#! PARAMETERS : -b <bootimage> the name of the boot image to use
+#! -d <device> the interface to use, e.g., eth1
+#! (defaults is eth0)
+#! -f save it in flash memory at address 0x10000
+#! -F save it in flash memory at address 0
+#! -h show some help
+#! -i <image> name of the image to use (default is fimage)
+#! -o <offset> the offset in the flash where the flashing
+#! starts
+#! -O <offset> the offset in the image file where the
+#! flashing starts from
+#! -p print the resulting etrax100boot command
+#! instead of executing it
+#! -s <size> how much to flash (default is the size of
+#! the flash minus the offset specified using
+#! -o or -f)
+#! -S <size> the size of the flash
+#!
+#! All sizes and offsets above can be specified as decimal
+#! numbers, or as hexadecimal numbers by prefixing them with 0x.
+#! It is also possible to use the suffixes k and M to specify
+#! kilo (1024) or mega (1048576).
+#!
+#! DESCRIPTION: Extract the start of the image and any registers that should
+#! be set from the kimage or fimage file, and then boot it.
+#!
+#! FUNCTIONS : convert_size
+#! extract_hw_settings
+#! get_dword
+#! calculate_sdram_init
+#! sdram_command
+#! print_help
+#!
+#!----------------------------------------------------------------------------
+#! HISTORY
+#!
+#! $Log: boot_linux,v $
+#! Revision 1.16 2004/11/01 16:32:27 starvik
+#! Corrected help text to avoid confusion
+#!
+#! Revision 1.15 2003/01/29 11:48:57 pkj
+#! Calculate a flash size large enough for the given image if the
+#! -S option is not specified.
+#!
+#! Revision 1.14 2002/11/18 14:40:09 pkj
+#! Make use of the --loop option to etrax100boot when initialising
+#! SDRAM memories. This requires a lot fewer options to be passed
+#! to the boot loader.
+#!
+#! Revision 1.13 2002/08/15 16:29:02 pkj
+#! * The -S option now accepts the size in bytes (just like the -s option).
+#! For backwards compatibility it still assumes sizes of 16 and less to
+#! be specified in MB.
+#! * The suffixes k and M can now be used with all sizes and offsets to
+#! specify them in kilo or mega.
+#!
+#! Revision 1.12 2002/08/15 15:27:34 pkj
+#! Use $opts{'x'} instead of $opt_x.
+#!
+#! Revision 1.11 2002/07/04 17:06:39 pkj
+#! * No longer specifies a bootfile by default (not needed any longer).
+#! * Implemented option -b to specify a bootfile.
+#! * Removed references to option -l (it was never implemented).
+#!
+#! Revision 1.10 2002/06/04 11:50:23 starvik
+#! Check if mrs_data is specified in kernelconfig (necessary for MCM)
+#!
+#! Revision 1.9 2002/01/29 10:38:26 pkj
+#! Change illegal to invalid.
+#!
+#! Revision 1.8 2001/09/13 12:32:10 pkj
+#! * Added option -S to specify the size of the flash (in MB), as -s
+#! is used to specify how much to flash nowadays.
+#! * Made the default size of the flash depend on the size of the image
+#! file. If it is bigger than 0x200100 then the flash is assumed to
+#! be 4 MB, otherwise it is assumed to be 2 MB.
+#! * Added verification of various options.
+#!
+#! Revision 1.7 2001/09/13 10:25:11 pkj
+#! Minor clean-up.
+#!
+#! Revision 1.6 2001/06/29 10:05:16 pkj
+#! Corrected check for SDRAM.
+#!
+#! Revision 1.5 2001/06/29 09:11:55 pkj
+#! Synchronised boot_elinux and boot_linux.
+#!
+#!----------------------------------------------------------------------------
+#! (C) Copyright 2001, Axis Communications AB, LUND, SWEDEN
+#!****************************************************************************
+# $Id: boot_linux,v 1.16 2004/11/01 16:32:27 starvik Exp $
+
+#****************** INCLUDE FILES SECTION ************************************
+
+use strict;
+
+use Getopt::Std;
+use File::Basename;
+
+#****************** VARIABLE DECLARATION SECTION *****************************
+
+use vars qw($my_name %opts);
+use vars qw($text_start $cmd);
+use vars qw($image_name $image_size);
+use vars qw($offset $source_offset $flash_size $flashing_size);
+use vars qw($sdram_timing_address $sdram_config_address);
+use vars qw($sdram_precharge $sdram_nop $sdram_refresh $sdram_mrs);
+
+#****************** CONSTANT SECTION *****************************************
+
+# Register addresses
+$sdram_timing_address = "b0000008";
+$sdram_config_address = "b000000c";
+
+# SDRAM commands
+$sdram_precharge = 3;
+$sdram_nop = 0;
+$sdram_refresh = 2;
+$sdram_mrs = 1;
+
+#****************** MAIN PROGRAM SECTION *************************************
+
+# The name of this program.
+$my_name = basename($0);
+
+# Get options
+getopts('b:d:fFhi:o:O:ps:S:', \%opts);
+
+&print_help if ($opts{'h'});
+
+# Name and existance of the image
+$image_name = ($opts{'i'} ? $opts{'i'} : 'fimage');
+die "Could not find the image $image_name!\n" unless (-s $image_name);
+
+if ($opts{'f'} || $opts{'F'})
+{
+ $image_size = -s $image_name;
+
+ $offset = ($opts{'f'} ? 0x10000 : 0);
+
+ $offset = &convert_size($opts{'o'}) if (defined($opts{'o'}));
+
+ die("$my_name: Invalid destination offset\n") if ($offset !~ /^\d+$/);
+
+ my $base_name = basename($image_name);
+ if ($base_name eq 'timage' || $base_name eq 'flash1.img')
+ {
+ $source_offset = 0;
+ }
+ else
+ {
+ $source_offset = $offset;
+ }
+
+ $source_offset = &convert_size($opts{'O'}) if (defined($opts{'O'}));
+
+ die("$my_name: Invalid source offset\n") if ($source_offset !~ /^\d+$/);
+ die("$my_name: Source offset > image size\n") if ($source_offset > $image_size);
+
+ if (defined($opts{'S'}))
+ {
+ # Backwards compatibility to allow specifying the flash size in MB
+ # without using an M suffix
+ $opts{'S'} .= 'M' if ($opts{'S'} =~ /^\d+$/ && $opts{'S'} <= 16);
+
+ $flash_size = &convert_size($opts{'S'});
+ }
+ else
+ {
+ # Calculate a flash size large enough for the image without the checksum
+ # and HWID.
+ $flash_size = ($image_size - $source_offset + $offset) & 0xFFFF0000;
+ }
+
+ die("$my_name: Invalid flash size\n") if ($flash_size !~ /^\d+$/);
+ die("$my_name: Destination offset > flash size\n") if ($offset > $flash_size);
+ if (defined($opts{'s'}))
+ {
+ $flashing_size = &convert_size($opts{'s'});
+ }
+ else
+ {
+ $flashing_size = $flash_size - $offset;
+ }
+
+ die("$my_name: Invalid size to flash\n") if ($flashing_size !~ /^\d+$/);
+
+ if ($flashing_size > $flash_size - $offset)
+ {
+ $flashing_size = $flash_size - $offset;
+ printf("Warning: Flashing size limited to 0x%lx due to the offset (0x%lx) and flash size (0x%lx).\n", $flashing_size, $offset, $flash_size);
+ }
+
+ if ($flashing_size > $image_size - $source_offset)
+ {
+ $flashing_size = $image_size - $source_offset;
+ printf("Warning: Flashing size limited to 0x%lx due to the offset (0x%lx) and image size (0x%lx).\n", $flashing_size, $source_offset, $image_size);
+ }
+}
+
+# Create the command line to boot the image
+if (system('./etrax100boot --help > /dev/null') == 0)
+{
+ $cmd = './etrax100boot';
+}
+elsif (system('svinto_boot --help > /dev/null') == 0)
+{
+ $cmd = 'svinto_boot';
+}
+else
+{
+ die("Cannot find e100boot program in your PATH!\n");
+}
+
+$cmd .= " --device $opts{'d'}" if ($opts{'d'});
+
+$cmd .= &extract_hw_settings;
+
+$cmd .= " --bootfile $opts{'b'}" if ($opts{'b'});
+$cmd .= " --file $image_name $text_start";
+
+if ($opts{'f'} || $opts{'F'})
+{
+ $cmd .= sprintf(" --flash %lx %lx %lx --jump 0",
+ hex($text_start) + $source_offset, $offset, $flashing_size);
+}
+else
+{
+ $cmd .= " --jump $text_start";
+}
+
+if ($opts{'p'})
+{
+ print "Command:\n$cmd\n";
+}
+else
+{
+ system($cmd);
+}
+
+exit 0;
+
+#****************** FUNCTION DEFINITION SECTION ******************************
+
+#*****************************************************************************
+##
+## FUNCTION NAME: convert_size
+##
+##****************************************************************************
+
+sub convert_size
+{
+ my($arg) = @_;
+ my $size;
+
+ if ($arg =~ /^0x([\da-fA-F]+)([kM])?$/)
+ {
+ $size = hex($1);
+ }
+ elsif ($arg =~ /^(\d+)([kM])?$/)
+ {
+ $size = $1;
+ }
+ else
+ {
+ return -1;
+ }
+
+ if (!defined($2))
+ {
+ return $size;
+ }
+ elsif ($2 eq 'k')
+ {
+ return $size * 1024;
+ }
+ elsif ($2 eq 'M')
+ {
+ return $size * 1048576;
+ }
+}
+
+#*****************************************************************************
+##
+## FUNCTION NAME: extract_hw_settings
+##
+##****************************************************************************
+
+sub extract_hw_settings
+{
+ my $data;
+ my $dbg_port;
+ my $sdram_enabled;
+ my $return_value = "";
+ my $sdram_config;
+
+ # The hw information table has the following format
+ #
+ # "HW_PARAM_MAGIC"
+ # text_start (dword)
+ # serial debg port (dword)
+ # sdram enabled (dword)
+ # register address (dword)
+ # register value (dword)
+ # ...
+ # 0
+
+ open(FILE, "$image_name") || die("Could not open '$image_name'");
+
+ while (<FILE>)
+ {
+ if (m/HW_PARAM_MAGIC/g)
+ {
+ # Seek to first byte after magic
+ seek(FILE, -length($_) + pos($_), 1);
+ last;
+ }
+ }
+
+ $text_start = &get_dword;
+ $dbg_port = &get_dword;
+ $sdram_enabled = int(&get_dword);
+
+ while (1)
+ {
+ my $register = &get_dword;
+ my $value = &get_dword;
+
+ last if ($register eq "00000000");
+
+ if ($sdram_enabled)
+ {
+ if ($register eq $sdram_config_address)
+ {
+ $sdram_config = $value;
+ }
+ elsif ($register eq $sdram_timing_address)
+ {
+ $return_value .= &calculate_sdram_init($value, $sdram_config);
+ next;
+ }
+ }
+
+ $return_value .= " --setreg $register $value";
+ }
+
+ close(FILE);
+
+ return $return_value;
+}
+
+#*****************************************************************************
+##
+## FUNCTION NAME: get_dword
+##
+##****************************************************************************
+
+sub get_dword
+{
+ my $data;
+
+ read(FILE, $data, 4);
+ return unpack("H8", pack("V", unpack("N", $data)));
+}
+
+#*****************************************************************************
+##
+## FUNCTION NAME: calculate_sdram_init
+##
+##****************************************************************************
+
+sub calculate_sdram_init
+{
+ # Refer to ETRAX 100LX Designers Reference for a description of SDRAM
+ # initialization
+ my $sdram_init_val = hex($_[0]);
+ my $sdram_config_val = hex($_[1]);
+ my $bus_width = $sdram_config_val & 0x00800000;
+ my $speed;
+ my $cas_latency;
+ my $mrs_data;
+ my $temp;
+ my $return_value;
+ my $value;
+
+ $mrs_data = ($sdram_init_val & 0x00ff0000) >> 16;
+ $sdram_init_val &= 0x8000ffff; # Make sure mrs data is 0
+ $sdram_init_val |= 0x80000000; # Make sure sdram is enabled
+ $speed = $sdram_init_val & 0x1000;
+ $cas_latency = $sdram_init_val & 0x3;
+ if ($speed) # 100 MHz
+ {
+ $cas_latency += 2;
+ }
+ else # 50 MHz
+ {
+ $cas_latency += 1;
+ }
+
+ # Calculate value of mrs_data
+ # CAS latency = 2 && bus_width = 32 => 0x40
+ # CAS latency = 3 && bus_width = 32 => 0x60
+ # CAS latency = 2 && bus_width = 16 => 0x20
+ # CAS latency = 3 && bus_width = 16 => 0x30
+ if ($mrs_data == 0)
+ {
+ if ($bus_width == 0) # 16 bits
+ {
+ $mrs_data = $cas_latency == 2 ? 0x20 : 0x30;
+ }
+ else # 32 bits
+ {
+ $mrs_data = $cas_latency == 2 ? 0x40 : 0x60;
+ }
+ }
+
+ $temp = $sdram_init_val | 0x0000c000; # Disable refresh
+ $return_value .= &sdram_command($temp);
+ $return_value .= " --pause 20000";
+
+ $return_value .= &sdram_command($temp, $sdram_precharge);
+ $return_value .= &sdram_command($temp, $sdram_nop);
+
+ $return_value .= " --setreg +0 7";
+ $return_value .= " --label label1";
+ $return_value .= &sdram_command($temp, $sdram_refresh);
+ $return_value .= &sdram_command($temp, $sdram_nop);
+ $return_value .= " --loop +0 label1";
+
+ $return_value .= &sdram_command($temp, $sdram_mrs, $mrs_data);
+ $return_value .= &sdram_command($temp, $sdram_nop);
+
+ $return_value .= &sdram_command($sdram_init_val);
+
+ return $return_value;
+}
+
+#*****************************************************************************
+##
+## FUNCTION NAME: sdram_command
+##
+##****************************************************************************
+
+sub sdram_command
+{
+ my($temp, $value, $mrs_data) = @_;
+
+ $value ||= 0;
+ if ($value == $sdram_mrs)
+ {
+ $value = sprintf("%lx", $temp | ($value << 9) | ($mrs_data << 16));
+ }
+ else
+ {
+ $value = sprintf("%lx", $temp | ($value << 9));
+ }
+
+ return " --setreg $sdram_timing_address $value";
+}
+
+#*****************************************************************************
+##
+## FUNCTION NAME: print_help
+##
+##****************************************************************************
+
+sub print_help
+{
+ print "\nAXIS $my_name, ", '$Revision: 1.16 $ $Date: 2004/11/01 16:32:27 $ ', "\n";
+ die <<EOT;
+Copyright (C) 2001-2002 Axis Communications AB
+
+DESCRIPTION:
+ This program is used to boot (and flash) a linux image to a box.
+ It tries to extract the required ETRAX 100 settings from the image file.
+
+SYNTAX:
+ $my_name [options]
+
+OPTIONS:
+ -b <bootfile> : The boot image to use.
+ -d <device> : The network interface to use, default is eth0.
+ -f : Save the image in the flash memory starting at
+ address 0x10000.
+ -F : Save the image in the flash memory starting at
+ address 0.
+ -h : Print this help text.
+ -i <image> : The path and name of the image to use, default
+ is fimage.
+ -o <offset> : The offset in the flash where the flashing starts.
+ -O <offset> : The offset in the image file where the flashing
+ starts from.
+ -p : Print the resulting etrax100boot command instead
+ of executing it.
+ -s <size> : How much to flash (default is the size of the
+ flash minus the offset specified using -o or -f).
+ -S <size> : The size of the flash.
+
+ All sizes and offsets above can be specified as decimal numbers, or as
+ hexadecimal numbers by prefixing them with 0x. It is also possible to use
+ the suffixes k and M to specify kilo (1024) or mega (1048576).
+
+EOT
+}
+
+#****************** END OF FILE boot_linux ***********************************
projects / openwrt / svn-archive / archive.git / blobdiff