diff options
Diffstat (limited to 'target/linux/etrax/image/boot_linux')
| -rwxr-xr-x | target/linux/etrax/image/boot_linux | 512 |
1 files changed, 512 insertions, 0 deletions
diff --git a/target/linux/etrax/image/boot_linux b/target/linux/etrax/image/boot_linux new file mode 100755 index 0000000..e7d5807 --- /dev/null +++ b/target/linux/etrax/image/boot_linux @@ -0,0 +1,512 @@ +#!/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 *********************************** |