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add m1nor
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Sebastien Bourdeauducq committed Feb 15, 2013
1 parent 183e58f commit db83f2a4ecbd28c460680262120004cd6d9cb0fd
Showing with 132 additions and 0 deletions.
  1. +132 −0 m1nor
132 m1nor
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#!/bin/sh
#
# m1nor - Flash a file to M1 NOR partition selected by the file name
#
# Written 2011 by Werner Almesberger
# Copyright 2011 by Werner Almesberger
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#

#
# According to
# http://www.milkymist.org/wiki/index.php?title=Flashing_the_Milkymist_One#Flash_Memory_Distribution
#
# standby.fpg 0x0000 0000 640k
# soc-rescue.fpg 0x000A 0000 1536k
# bios-rescue.bin 0x0022 0000 128k
# splash-rescue.raw 0x0024 0000 640k
# flickernoise.fbi(res) 0x002E 0000 4096k
# soc.fpg 0x006E 0000 1536k alias: system.fpg
# bios.bin 0x0086 0000 128k
# splash.raw 0x0088 0000 640k
# flickernoise.fbi 0x0092 0000 4096k
# (data) 0x00D2 0000 19328k
#

classify()
{
if [ ! -r "$1" ]; then
echo "$1: cannot read" 1>&2
exit 1
fi

b=${1##*/}
if [ "${b#standby}" != "$b" ]; then off=0x0; ext=.fpg
elif [ "${b#soc-rescue}" != "$b" ]; then off=0xa0000; ext=.fpg
elif [ "${b#bios-rescue}" != "$b" ]; then off=0x220000; ext=.bin
elif [ "${b#splash-rescue}" != "$b" ]; then off=0x240000; ext=.raw
elif [ "${b#flickernoise-rescue}" != "$b" ]; then off=0x2e0000; ext=.fbi
elif [ "${b#soc}" != "$b" ]; then off=0x6e0000; ext=.fpg
elif [ "${b#system}" != "$b" ]; then off=0x6e0000; ext=.fpg
elif [ "${b#bios}" != "$b" ]; then off=0x860000; ext=.bin
elif [ "${b#splash}" != "$b" ]; then off=0x880000; ext=.raw
elif [ "${b#flickernoise}" != "$b" ]; then off=0x920000; ext=.fbi
elif [ "${b#data}" != "$b" ]; then off=0xd20000; ext=
else
echo "$1: unrecognized file name" 1>&2
exit 1
fi

if [ "$ext" -a "${1%$ext}" = "$1" ]; then
echo "$1: extension mismatch (expected $ext)" 1>&2
exit 1
fi
}


if [ -z "$1" ]; then
echo "usage: $0 filename ..." 1>&2
exit 1
fi

if [ "$FJMEM_BIT" ]; then
fjmem=$FJMEM_BIT
else
fjmem=
for n in /usr/local/share/milkymist/fjmem.bit \
$HOME/.qi/milkymist/*/*/fjmem.bit; do
if [ -r "$n" ]; then
fjmem="$n"
break
fi
done
if [ -z "$fjmem" ]; then
echo "cannot find fjmem.bit (consider setting FJMEM_BIT)" 1>&2
exit 1
fi
fi

for n in "$@"; do
classify "$n"
done

(
cat <<EOF
cable milkymist
detect
instruction CFG_OUT 000100 BYPASS
instruction CFG_IN 000101 BYPASS
pld load "$fjmem"
initbus fjmem opcode=000010
frequency 6000000
detectflash 0
endian big
EOF
for n in "$@"; do
classify "$n"
echo flashmem "$off" "$n" noverify
done
echo lockflash 0 55
echo detectflash 0
echo pld reconfigure
) | jtag -q || exit

#
# Fun fact: a direct flashmem-lockflash-pld reconfigure sequence leaves
# the FPGA in a weird state from which it can't boot out of standby, neither
# via JTAG (pld load ...) or by pressing the middle button.
#
# The only thing that seems to help is to run "detectflash" after the locking.
# (Tried "peek", "usleep", "pld readreg", ... without success.)
#

#
# FIXME: the exit code of "jtag" doesn't indicate whether the session was
# successful.
#

first=true
for n in "$@"; do
classify "$n"
echo -n "Flashed $n at offset $off" 1>&2
if $first; then
echo " using $fjmem" 1>&2
else
echo 1>&2
fi
first=false
done

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