From 93941c6393ec3454c64528e537534284a81b04ac Mon Sep 17 00:00:00 2001 From: Rob Austein Date: Tue, 19 May 2015 23:49:18 -0400 Subject: Import FPGA I/O code from core/platform/novena/sw, add minimal autoconf, whack with a club until it builds. --- .gitignore | 7 + Makefile.in | 46 + configure | 2882 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ configure.ac | 43 + cryptech.h | 441 +++++++++ hal_io_eim.c | 208 +++++ hal_io_i2c.c | 339 +++++++ novena-eim.c | 708 +++++++++++++++ novena-eim.h | 53 ++ 9 files changed, 4727 insertions(+) create mode 100644 .gitignore create mode 100644 Makefile.in create mode 100755 configure create mode 100644 configure.ac create mode 100644 cryptech.h create mode 100644 hal_io_eim.c create mode 100644 hal_io_i2c.c create mode 100644 novena-eim.c create mode 100644 novena-eim.h diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..d1767ad --- /dev/null +++ b/.gitignore @@ -0,0 +1,7 @@ +*.[ao] +*~ +Makefile +TAGS +autom4te.cache +config.log +config.status diff --git a/Makefile.in b/Makefile.in new file mode 100644 index 0000000..02ce7c7 --- /dev/null +++ b/Makefile.in @@ -0,0 +1,46 @@ +# @configure_input@ + +INC = cryptech.h +LIB = libcryptech.a + +BIN = hash hash_tester trng_extractor trng_tester aes_tester modexp_tester + +HAL_IO_OBJ_EIM = hal_io_eim.o novena-eim.o +HAL_IO_OBJ_I2C = hal_io_i2c.o +HAL_IO_OBJ = $(HAL_IO_OBJ_@FPGA_BUS@) + +LIB_OBJ = $(HAL_IO_OBJ) + +CC = @CC@ +CFLAGS = @CFLAGS@ +LDFLAGS = @LDFLAGS@ +LIBS = @LIBS@ + +prefix = @prefix@ +exec_prefix = @exec_prefix@ +bindir = @bindir@ +includedir = @includedir@ +libdir = @libdir@ +sysconfdir = @sysconfdir@ + +all: $(LIB) $(BIN) + +*.o: $(INC) + +$(BIN): $(LIB) + +${LIB}: $(LIB_OBJ) + ar rcs $@ $^ + +install: $(LIB) $(BIN) $(INC) + install $(LIB) $(libdir) + install $(BIN) $(bindir) + install $(INC) $(includedir) + +uninstall: + cd $(libdir); rm -f $(LIB) + cd $(bindir); rm -f ${BIN} + cd $(includedir); rm -f $(INC) + +clean: + rm -f *.o $(LIB) $(BIN) diff --git a/configure b/configure new file mode 100755 index 0000000..9c91f97 --- /dev/null +++ b/configure @@ -0,0 +1,2882 @@ +#! /bin/sh +# Guess values for system-dependent variables and create Makefiles. +# Generated by GNU Autoconf 2.69 for libcryptech 0.1. +# +# +# Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc. +# +# +# This configure script is free software; the Free Software Foundation +# gives unlimited permission to copy, distribute and modify it. +## -------------------- ## +## M4sh Initialization. ## +## -------------------- ## + +# Be more Bourne compatible +DUALCASE=1; export DUALCASE # for MKS sh +if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then : + emulate sh + NULLCMD=: + # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which + # is contrary to our usage. Disable this feature. + alias -g '${1+"$@"}'='"$@"' + setopt NO_GLOB_SUBST +else + case `(set -o) 2>/dev/null` in #( + *posix*) : + set -o posix ;; #( + *) : + ;; +esac +fi + + +as_nl=' +' +export as_nl +# Printing a long string crashes Solaris 7 /usr/bin/printf. +as_echo='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\' +as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo +as_echo=$as_echo$as_echo$as_echo$as_echo$as_echo$as_echo +# Prefer a ksh shell builtin over an external printf program on Solaris, +# but without wasting forks for bash or zsh. +if test -z "$BASH_VERSION$ZSH_VERSION" \ + && (test "X`print -r -- $as_echo`" = "X$as_echo") 2>/dev/null; then + as_echo='print -r --' + as_echo_n='print -rn --' +elif (test "X`printf %s $as_echo`" = "X$as_echo") 2>/dev/null; then + as_echo='printf %s\n' + as_echo_n='printf %s' +else + if test "X`(/usr/ucb/echo -n -n $as_echo) 2>/dev/null`" = "X-n $as_echo"; then + as_echo_body='eval /usr/ucb/echo -n "$1$as_nl"' + as_echo_n='/usr/ucb/echo -n' + else + as_echo_body='eval expr "X$1" : "X\\(.*\\)"' + as_echo_n_body='eval + arg=$1; + case $arg in #( + *"$as_nl"*) + expr "X$arg" : "X\\(.*\\)$as_nl"; + arg=`expr "X$arg" : ".*$as_nl\\(.*\\)"`;; + esac; + expr "X$arg" : "X\\(.*\\)" | tr -d "$as_nl" + ' + export as_echo_n_body + as_echo_n='sh -c $as_echo_n_body as_echo' + fi + export as_echo_body + as_echo='sh -c $as_echo_body as_echo' +fi + +# The user is always right. +if test "${PATH_SEPARATOR+set}" != set; then + PATH_SEPARATOR=: + (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 && { + (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 || + PATH_SEPARATOR=';' + } +fi + + +# IFS +# We need space, tab and new line, in precisely that order. Quoting is +# there to prevent editors from complaining about space-tab. +# (If _AS_PATH_WALK were called with IFS unset, it would disable word +# splitting by setting IFS to empty value.) +IFS=" "" $as_nl" + +# Find who we are. Look in the path if we contain no directory separator. +as_myself= +case $0 in #(( + *[\\/]* ) as_myself=$0 ;; + *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +for as_dir in $PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break + done +IFS=$as_save_IFS + + ;; +esac +# We did not find ourselves, most probably we were run as `sh COMMAND' +# in which case we are not to be found in the path. +if test "x$as_myself" = x; then + as_myself=$0 +fi +if test ! -f "$as_myself"; then + $as_echo "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2 + exit 1 +fi + +# Unset variables that we do not need and which cause bugs (e.g. in +# pre-3.0 UWIN ksh). But do not cause bugs in bash 2.01; the "|| exit 1" +# suppresses any "Segmentation fault" message there. '((' could +# trigger a bug in pdksh 5.2.14. +for as_var in BASH_ENV ENV MAIL MAILPATH +do eval test x\${$as_var+set} = xset \ + && ( (unset $as_var) || exit 1) >/dev/null 2>&1 && unset $as_var || : +done +PS1='$ ' +PS2='> ' +PS4='+ ' + +# NLS nuisances. +LC_ALL=C +export LC_ALL +LANGUAGE=C +export LANGUAGE + +# CDPATH. +(unset CDPATH) >/dev/null 2>&1 && unset CDPATH + +# Use a proper internal environment variable to ensure we don't fall + # into an infinite loop, continuously re-executing ourselves. + if test x"${_as_can_reexec}" != xno && test "x$CONFIG_SHELL" != x; then + _as_can_reexec=no; export _as_can_reexec; + # We cannot yet assume a decent shell, so we have to provide a +# neutralization value for shells without unset; and this also +# works around shells that cannot unset nonexistent variables. +# Preserve -v and -x to the replacement shell. +BASH_ENV=/dev/null +ENV=/dev/null +(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV +case $- in # (((( + *v*x* | *x*v* ) as_opts=-vx ;; + *v* ) as_opts=-v ;; + *x* ) as_opts=-x ;; + * ) as_opts= ;; +esac +exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"} +# Admittedly, this is quite paranoid, since all the known shells bail +# out after a failed `exec'. +$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2 +as_fn_exit 255 + fi + # We don't want this to propagate to other subprocesses. + { _as_can_reexec=; unset _as_can_reexec;} +if test "x$CONFIG_SHELL" = x; then + as_bourne_compatible="if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then : + emulate sh + NULLCMD=: + # Pre-4.2 versions of Zsh do word splitting on \${1+\"\$@\"}, which + # is contrary to our usage. Disable this feature. + alias -g '\${1+\"\$@\"}'='\"\$@\"' + setopt NO_GLOB_SUBST +else + case \`(set -o) 2>/dev/null\` in #( + *posix*) : + set -o posix ;; #( + *) : + ;; +esac +fi +" + as_required="as_fn_return () { (exit \$1); } +as_fn_success () { as_fn_return 0; } +as_fn_failure () { as_fn_return 1; } +as_fn_ret_success () { return 0; } +as_fn_ret_failure () { return 1; } + +exitcode=0 +as_fn_success || { exitcode=1; echo as_fn_success failed.; } +as_fn_failure && { exitcode=1; echo as_fn_failure succeeded.; } +as_fn_ret_success || { exitcode=1; echo as_fn_ret_success failed.; } +as_fn_ret_failure && { exitcode=1; echo as_fn_ret_failure succeeded.; } +if ( set x; as_fn_ret_success y && test x = \"\$1\" ); then : + +else + exitcode=1; echo positional parameters were not saved. +fi +test x\$exitcode = x0 || exit 1 +test -x / || exit 1" + as_suggested=" as_lineno_1=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_1a=\$LINENO + as_lineno_2=";as_suggested=$as_suggested$LINENO;as_suggested=$as_suggested" as_lineno_2a=\$LINENO + eval 'test \"x\$as_lineno_1'\$as_run'\" != \"x\$as_lineno_2'\$as_run'\" && + test \"x\`expr \$as_lineno_1'\$as_run' + 1\`\" = \"x\$as_lineno_2'\$as_run'\"' || exit 1" + if (eval "$as_required") 2>/dev/null; then : + as_have_required=yes +else + as_have_required=no +fi + if test x$as_have_required = xyes && (eval "$as_suggested") 2>/dev/null; then : + +else + as_save_IFS=$IFS; IFS=$PATH_SEPARATOR +as_found=false +for as_dir in /bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH +do + IFS=$as_save_IFS + test -z "$as_dir" && as_dir=. + as_found=: + case $as_dir in #( + /*) + for as_base in sh bash ksh sh5; do + # Try only shells that exist, to save several forks. + as_shell=$as_dir/$as_base + if { test -f "$as_shell" || test -f "$as_shell.exe"; } && + { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$as_shell"; } 2>/dev/null; then : + CONFIG_SHELL=$as_shell as_have_required=yes + if { $as_echo "$as_bourne_compatible""$as_suggested" | as_run=a "$as_shell"; } 2>/dev/null; then : + break 2 +fi +fi + done;; + esac + as_found=false +done +$as_found || { if { test -f "$SHELL" || test -f "$SHELL.exe"; } && + { $as_echo "$as_bourne_compatible""$as_required" | as_run=a "$SHELL"; } 2>/dev/null; then : + CONFIG_SHELL=$SHELL as_have_required=yes +fi; } +IFS=$as_save_IFS + + + if test "x$CONFIG_SHELL" != x; then : + export CONFIG_SHELL + # We cannot yet assume a decent shell, so we have to provide a +# neutralization value for shells without unset; and this also +# works around shells that cannot unset nonexistent variables. +# Preserve -v and -x to the replacement shell. +BASH_ENV=/dev/null +ENV=/dev/null +(unset BASH_ENV) >/dev/null 2>&1 && unset BASH_ENV ENV +case $- in # (((( + *v*x* | *x*v* ) as_opts=-vx ;; + *v* ) as_opts=-v ;; + *x* ) as_opts=-x ;; + * ) as_opts= ;; +esac +exec $CONFIG_SHELL $as_opts "$as_myself" ${1+"$@"} +# Admittedly, this is quite paranoid, since all the known shells bail +# out after a failed `exec'. +$as_echo "$0: could not re-execute with $CONFIG_SHELL" >&2 +exit 255 +fi + + if test x$as_have_required = xno; then : + $as_echo "$0: This script requires a shell more modern than all" + $as_echo "$0: the shells that I found on your system." + if test x${ZSH_VERSION+set} = xset ; then + $as_echo "$0: In particular, zsh $ZSH_VERSION has bugs and should" + $as_echo "$0: be upgraded to zsh 4.3.4 or later." + else + $as_echo "$0: Please tell bug-autoconf@gnu.org about your system, +$0: including any error possibly output before this +$0: message. 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Make it in the build tree +# simply because there is no reason against having it here, and in addition, +# creating and moving files from /tmp can sometimes cause problems. +# Hook for its removal unless debugging. +# Note that there is a small window in which the directory will not be cleaned: +# after its creation but before its name has been assigned to `$tmp'. +$debug || +{ + tmp= ac_tmp= + trap 'exit_status=$? + : "${ac_tmp:=$tmp}" + { test ! -d "$ac_tmp" || rm -fr "$ac_tmp"; } && exit $exit_status +' 0 + trap 'as_fn_exit 1' 1 2 13 15 +} +# Create a (secure) tmp directory for tmp files. + +{ + tmp=`(umask 077 && mktemp -d "./confXXXXXX") 2>/dev/null` && + test -d "$tmp" +} || +{ + tmp=./conf$$-$RANDOM + (umask 077 && mkdir "$tmp") +} || as_fn_error $? "cannot create a temporary directory in ." "$LINENO" 5 +ac_tmp=$tmp + +# Set up the scripts for CONFIG_FILES section. +# No need to generate them if there are no CONFIG_FILES. +# This happens for instance with `./config.status config.h'. +if test -n "$CONFIG_FILES"; then + + +ac_cr=`echo X | tr X '\015'` +# On cygwin, bash can eat \r inside `` if the user requested igncr. +# But we know of no other shell where ac_cr would be empty at this +# point, so we can use a bashism as a fallback. +if test "x$ac_cr" = x; then + eval ac_cr=\$\'\\r\' +fi +ac_cs_awk_cr=`$AWK 'BEGIN { print "a\rb" }' /dev/null` +if test "$ac_cs_awk_cr" = "a${ac_cr}b"; then + ac_cs_awk_cr='\\r' +else + ac_cs_awk_cr=$ac_cr +fi + +echo 'BEGIN {' >"$ac_tmp/subs1.awk" && +_ACEOF + + +{ + echo "cat >conf$$subs.awk <<_ACEOF" && + echo "$ac_subst_vars" | sed 's/.*/&!$&$ac_delim/' && + echo "_ACEOF" +} >conf$$subs.sh || + as_fn_error $? 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"could not setup config files machinery" "$LINENO" 5 +_ACEOF + +# VPATH may cause trouble with some makes, so we remove sole $(srcdir), +# ${srcdir} and @srcdir@ entries from VPATH if srcdir is ".", strip leading and +# trailing colons and then remove the whole line if VPATH becomes empty +# (actually we leave an empty line to preserve line numbers). +if test "x$srcdir" = x.; then + ac_vpsub='/^[ ]*VPATH[ ]*=[ ]*/{ +h +s/// +s/^/:/ +s/[ ]*$/:/ +s/:\$(srcdir):/:/g +s/:\${srcdir}:/:/g +s/:@srcdir@:/:/g +s/^:*// +s/:*$// +x +s/\(=[ ]*\).*/\1/ +G +s/\n// +s/^[^=]*=[ ]*$// +}' +fi + +cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1 +fi # test -n "$CONFIG_FILES" + + +eval set X " :F $CONFIG_FILES " +shift +for ac_tag +do + case $ac_tag in + :[FHLC]) ac_mode=$ac_tag; continue;; + esac + case $ac_mode$ac_tag in + :[FHL]*:*);; + :L* | :C*:*) as_fn_error $? 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"could not create $ac_file" "$LINENO" 5 ;; + esac + ;; + esac + + ac_dir=`$as_dirname -- "$ac_file" || +$as_expr X"$ac_file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \ + X"$ac_file" : 'X\(//\)[^/]' \| \ + X"$ac_file" : 'X\(//\)$' \| \ + X"$ac_file" : 'X\(/\)' \| . 2>/dev/null || +$as_echo X"$ac_file" | + sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ + s//\1/ + q + } + /^X\(\/\/\)[^/].*/{ + s//\1/ + q + } + /^X\(\/\/\)$/{ + s//\1/ + q + } + /^X\(\/\).*/{ + s//\1/ + q + } + s/.*/./; q'` + as_dir="$ac_dir"; as_fn_mkdir_p + ac_builddir=. + +case "$ac_dir" in +.) ac_dir_suffix= ac_top_builddir_sub=. ac_top_build_prefix= ;; +*) + ac_dir_suffix=/`$as_echo "$ac_dir" | sed 's|^\.[\\/]||'` + # A ".." for each directory in $ac_dir_suffix. + ac_top_builddir_sub=`$as_echo "$ac_dir_suffix" | sed 's|/[^\\/]*|/..|g;s|/||'` + case $ac_top_builddir_sub in + "") ac_top_builddir_sub=. ac_top_build_prefix= ;; + *) ac_top_build_prefix=$ac_top_builddir_sub/ ;; + esac ;; +esac +ac_abs_top_builddir=$ac_pwd +ac_abs_builddir=$ac_pwd$ac_dir_suffix +# for backward compatibility: +ac_top_builddir=$ac_top_build_prefix + +case $srcdir in + .) # We are building in place. + ac_srcdir=. + ac_top_srcdir=$ac_top_builddir_sub + ac_abs_top_srcdir=$ac_pwd ;; + [\\/]* | ?:[\\/]* ) # Absolute name. + ac_srcdir=$srcdir$ac_dir_suffix; + ac_top_srcdir=$srcdir + ac_abs_top_srcdir=$srcdir ;; + *) # Relative name. + ac_srcdir=$ac_top_build_prefix$srcdir$ac_dir_suffix + ac_top_srcdir=$ac_top_build_prefix$srcdir + ac_abs_top_srcdir=$ac_pwd/$srcdir ;; +esac +ac_abs_srcdir=$ac_abs_top_srcdir$ac_dir_suffix + + + case $ac_mode in + :F) + # + # CONFIG_FILE + # + +_ACEOF + +cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1 +# If the template does not know about datarootdir, expand it. +# FIXME: This hack should be removed a few years after 2.60. +ac_datarootdir_hack=; ac_datarootdir_seen= +ac_sed_dataroot=' +/datarootdir/ { + p + q +} +/@datadir@/p +/@docdir@/p +/@infodir@/p +/@localedir@/p +/@mandir@/p' +case `eval "sed -n \"\$ac_sed_dataroot\" $ac_file_inputs"` in +*datarootdir*) ac_datarootdir_seen=yes;; +*@datadir@*|*@docdir@*|*@infodir@*|*@localedir@*|*@mandir@*) + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&5 +$as_echo "$as_me: WARNING: $ac_file_inputs seems to ignore the --datarootdir setting" >&2;} +_ACEOF +cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1 + ac_datarootdir_hack=' + s&@datadir@&$datadir&g + s&@docdir@&$docdir&g + s&@infodir@&$infodir&g + s&@localedir@&$localedir&g + s&@mandir@&$mandir&g + s&\\\${datarootdir}&$datarootdir&g' ;; +esac +_ACEOF + +# Neutralize VPATH when `$srcdir' = `.'. +# Shell code in configure.ac might set extrasub. +# FIXME: do we really want to maintain this feature? +cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1 +ac_sed_extra="$ac_vpsub +$extrasub +_ACEOF +cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1 +:t +/@[a-zA-Z_][a-zA-Z_0-9]*@/!b +s|@configure_input@|$ac_sed_conf_input|;t t +s&@top_builddir@&$ac_top_builddir_sub&;t t +s&@top_build_prefix@&$ac_top_build_prefix&;t t +s&@srcdir@&$ac_srcdir&;t t +s&@abs_srcdir@&$ac_abs_srcdir&;t t +s&@top_srcdir@&$ac_top_srcdir&;t t +s&@abs_top_srcdir@&$ac_abs_top_srcdir&;t t +s&@builddir@&$ac_builddir&;t t +s&@abs_builddir@&$ac_abs_builddir&;t t +s&@abs_top_builddir@&$ac_abs_top_builddir&;t t +$ac_datarootdir_hack +" +eval sed \"\$ac_sed_extra\" "$ac_file_inputs" | $AWK -f "$ac_tmp/subs.awk" \ + >$ac_tmp/out || as_fn_error $? "could not create $ac_file" "$LINENO" 5 + +test -z "$ac_datarootdir_hack$ac_datarootdir_seen" && + { ac_out=`sed -n '/\${datarootdir}/p' "$ac_tmp/out"`; test -n "$ac_out"; } && + { ac_out=`sed -n '/^[ ]*datarootdir[ ]*:*=/p' \ + "$ac_tmp/out"`; test -z "$ac_out"; } && + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: $ac_file contains a reference to the variable \`datarootdir' +which seems to be undefined. Please make sure it is defined" >&5 +$as_echo "$as_me: WARNING: $ac_file contains a reference to the variable \`datarootdir' +which seems to be undefined. Please make sure it is defined" >&2;} + + rm -f "$ac_tmp/stdin" + case $ac_file in + -) cat "$ac_tmp/out" && rm -f "$ac_tmp/out";; + *) rm -f "$ac_file" && mv "$ac_tmp/out" "$ac_file";; + esac \ + || as_fn_error $? "could not create $ac_file" "$LINENO" 5 + ;; + + + + esac + +done # for ac_tag + + +as_fn_exit 0 +_ACEOF +ac_clean_files=$ac_clean_files_save + +test $ac_write_fail = 0 || + as_fn_error $? "write failure creating $CONFIG_STATUS" "$LINENO" 5 + + +# configure is writing to config.log, and then calls config.status. +# config.status does its own redirection, appending to config.log. +# Unfortunately, on DOS this fails, as config.log is still kept open +# by configure, so config.status won't be able to write to it; its +# output is simply discarded. So we exec the FD to /dev/null, +# effectively closing config.log, so it can be properly (re)opened and +# appended to by config.status. When coming back to configure, we +# need to make the FD available again. +if test "$no_create" != yes; then + ac_cs_success=: + ac_config_status_args= + test "$silent" = yes && + ac_config_status_args="$ac_config_status_args --quiet" + exec 5>/dev/null + $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false + exec 5>>config.log + # Use ||, not &&, to avoid exiting from the if with $? = 1, which + # would make configure fail if this is the last instruction. + $ac_cs_success || as_fn_exit 1 +fi +if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then + { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized options: $ac_unrecognized_opts" >&5 +$as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;} +fi + diff --git a/configure.ac b/configure.ac new file mode 100644 index 0000000..43db468 --- /dev/null +++ b/configure.ac @@ -0,0 +1,43 @@ +# -*- Autoconf -*- + +# Bare-minimum autoconf, with as little of the usual voodoo as +# possible. This probably ought to be replaced by a ten-line Python +# script, some day when we have time to shave that yak. +# +# We deliberately avoid constructs like AC_PROG_CC because they're +# almost certain to guess wrong about the settings we want. +# +# If you don't understand why there are so many square brackets, put +# the keyboard down and back away slowly before somebody gets hurt. + +AC_INIT([libcryptech], [0.1]) + +AC_ARG_VAR([FPGA_BUS], [Bus architecture to use (currently must be "EIM" or "I2C")]) +AC_ARG_VAR([CC], [C compiler command]) +AC_ARG_VAR([CFLAGS], [C compiler flags]) +AC_ARG_VAR([LDFLAGS], [Linker flags]) + +AS_CASE($FPGA_BUS, + [""],[FPGA_BUS=EIM], + [EIM|I2C],[], + [AC_MSG_ERROR([Invalid setting of FPGA_BUS, must be "EIM" or "I2C"])]) + +AS_CASE($CC, + [""],[CC="cc"], + []) + +AS_CASE($CFLAGS, + [""],[CFLAGS="-g -Wall -fPIC"], + []) + +AS_CASE($LDFLAGS, + [""],[LDFLAGS="-g"], + []) + +AC_MSG_NOTICE([FPGA bus: $FPGA_BUS]) +AC_MSG_NOTICE([C compiler: $CC]) +AC_MSG_NOTICE([C compiler flags: $CFLAGS]) +AC_MSG_NOTICE([Linker flags: $LDFLAGS]) + +AC_CONFIG_FILES([Makefile]) +AC_OUTPUT diff --git a/cryptech.h b/cryptech.h new file mode 100644 index 0000000..9a10c58 --- /dev/null +++ b/cryptech.h @@ -0,0 +1,441 @@ +//====================================================================== +// +// cryptech.h +// ---------- +// Memory map and access functions for Cryptech cores. +// +// +// Authors: Joachim Strombergson, Paul Selkirk +// Copyright (c) 2015, NORDUnet A/S All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// - Redistributions of source code must retain the above copyright notice, +// this list of conditions and the following disclaimer. +// +// - Redistributions in binary form must reproduce the above copyright +// notice, this list of conditions and the following disclaimer in the +// documentation and/or other materials provided with the distribution. +// +// - Neither the name of the NORDUnet nor the names of its contributors may +// be used to endorse or promote products derived from this software +// without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS +// IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED +// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A +// PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED +// TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR +// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF +// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING +// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +// +//====================================================================== + +/* + +Each Cryptech core has a set of 4-byte registers, which are accessed +through a 16-bit address. The address space is divided as follows: + 3 bits segment selector | up to 8 segments + 5 bits core selector | up to 32 cores/segment (see note below) + 8 bits register selector | up to 256 registers/core (see modexp below) + +i.e, the address is structured as: +sss ccccc rrrrrrrr + +The I2C and UART communication channels use this 16-bit address format +directly in their read and write commands. + +The EIM communications channel translates this 16-bit address into a +32-bit memory-mapped address in the range 0x08000000..807FFFF: +00001000000000 sss 0 ccccc rrrrrrrr 00 + +EIM, as implemented on the Novena, uses a 19-bit address space: + Bits 18..16 are the semgent selector. + Bits 15..10 are the core selector. + Bits 9..2 are the register selector. + Bits 1..0 are zero, because reads and writes are always word aligned. + +Note that EIM can support 64 cores per segment, but we sacrifice one bit +in order to map it into a 16-bit address space. + +*/ + + +//------------------------------------------------------------------ +// Default sizes +//------------------------------------------------------------------ +#define CORE_SIZE 0x100 +#define SEGMENT_SIZE 0x20 * CORE_SIZE + + +//------------------------------------------------------------------ +// Segments +//------------------------------------------------------------------ +#define SEGMENT_OFFSET_GLOBALS 0 * SEGMENT_SIZE +#define SEGMENT_OFFSET_HASHES 1 * SEGMENT_SIZE +#define SEGMENT_OFFSET_RNGS 2 * SEGMENT_SIZE +#define SEGMENT_OFFSET_CIPHERS 3 * SEGMENT_SIZE +#define SEGMENT_OFFSET_MATH 4 * SEGMENT_SIZE + + +//------------------------------------------------------------------ +// Addresses and codes common to all cores +//------------------------------------------------------------------ +#define ADDR_NAME0 0x00 +#define ADDR_NAME1 0x01 +#define ADDR_VERSION 0x02 +#define ADDR_CTRL 0x08 +#define CTRL_INIT 1 +#define CTRL_NEXT 2 +#define ADDR_STATUS 0x09 +#define STATUS_READY 1 +#define STATUS_VALID 2 + + +// a handy macro from cryptlib +#ifndef bitsToBytes +#define bitsToBytes(x) (x / 8) +#endif + + +//------------------------------------------------------------------ +// Board segment. +// Board-level registers and communication channel registers +//------------------------------------------------------------------ +#define BOARD_ADDR_BASE SEGMENT_OFFSET_GLOBALS + (0 * CORE_SIZE) +#define BOARD_ADDR_NAME0 BOARD_ADDR_BASE + ADDR_NAME0 +#define BOARD_ADDR_NAME1 BOARD_ADDR_BASE + ADDR_NAME1 +#define BOARD_ADDR_VERSION BOARD_ADDR_BASE + ADDR_VERSION +#define BOARD_ADDR_DUMMY BOARD_ADDR_BASE + 0xFF + +#define COMM_ADDR_BASE SEGMENT_OFFSET_GLOBALS + (1 * CORE_SIZE) +#define COMM_ADDR_NAME0 COMM_ADDR_BASE + ADDR_NAME0 +#define COMM_ADDR_NAME1 COMM_ADDR_BASE + ADDR_NAME1 +#define COMM_ADDR_VERSION COMM_ADDR_BASE + ADDR_VERSION + +// current name and version values +#define NOVENA_BOARD_NAME0 "PVT1" +#define NOVENA_BOARD_NAME1 " " +#define NOVENA_BOARD_VERSION "0.10" + +#define EIM_INTERFACE_NAME0 "eim " +#define EIM_INTERFACE_NAME1 " " +#define EIM_INTERFACE_VERSION "0.10" + +#define I2C_INTERFACE_NAME0 "i2c " +#define I2C_INTERFACE_NAME1 " " +#define I2C_INTERFACE_VERSION "0.10" + + +//------------------------------------------------------------------ +// Hashes segment. +//------------------------------------------------------------------ +// addresses common to all hash cores +#define ADDR_BLOCK 0x10 +#define ADDR_DIGEST 0x20 // except SHA512 + +// addresses and codes for the specific hash cores. +#define SHA1_ADDR_BASE SEGMENT_OFFSET_HASHES + (0 * CORE_SIZE) +#define SHA1_ADDR_NAME0 SHA1_ADDR_BASE + ADDR_NAME0 +#define SHA1_ADDR_NAME1 SHA1_ADDR_BASE + ADDR_NAME1 +#define SHA1_ADDR_VERSION SHA1_ADDR_BASE + ADDR_VERSION +#define SHA1_ADDR_CTRL SHA1_ADDR_BASE + ADDR_CTRL +#define SHA1_ADDR_STATUS SHA1_ADDR_BASE + ADDR_STATUS +#define SHA1_ADDR_BLOCK SHA1_ADDR_BASE + ADDR_BLOCK +#define SHA1_ADDR_DIGEST SHA1_ADDR_BASE + ADDR_DIGEST +#define SHA1_BLOCK_LEN bitsToBytes(512) +#define SHA1_LENGTH_LEN bitsToBytes(64) +#define SHA1_DIGEST_LEN bitsToBytes(160) + +#define SHA256_ADDR_BASE SEGMENT_OFFSET_HASHES + (1 * CORE_SIZE) +#define SHA256_ADDR_NAME0 SHA256_ADDR_BASE + ADDR_NAME0 +#define SHA256_ADDR_NAME1 SHA256_ADDR_BASE + ADDR_NAME1 +#define SHA256_ADDR_VERSION SHA256_ADDR_BASE + ADDR_VERSION +#define SHA256_ADDR_CTRL SHA256_ADDR_BASE + ADDR_CTRL +#define SHA256_ADDR_STATUS SHA256_ADDR_BASE + ADDR_STATUS +#define SHA256_ADDR_BLOCK SHA256_ADDR_BASE + ADDR_BLOCK +#define SHA256_ADDR_DIGEST SHA256_ADDR_BASE + ADDR_DIGEST +#define SHA256_BLOCK_LEN bitsToBytes(512) +#define SHA256_LENGTH_LEN bitsToBytes(64) +#define SHA256_DIGEST_LEN bitsToBytes(256) + +#define SHA512_ADDR_BASE SEGMENT_OFFSET_HASHES + (2 * CORE_SIZE) +#define SHA512_ADDR_NAME0 SHA512_ADDR_BASE + ADDR_NAME0 +#define SHA512_ADDR_NAME1 SHA512_ADDR_BASE + ADDR_NAME1 +#define SHA512_ADDR_VERSION SHA512_ADDR_BASE + ADDR_VERSION +#define SHA512_ADDR_CTRL SHA512_ADDR_BASE + ADDR_CTRL +#define SHA512_ADDR_STATUS SHA512_ADDR_BASE + ADDR_STATUS +#define SHA512_ADDR_BLOCK SHA512_ADDR_BASE + ADDR_BLOCK +#define SHA512_ADDR_DIGEST SHA512_ADDR_BASE + 0x40 +#define SHA512_BLOCK_LEN bitsToBytes(1024) +#define SHA512_LENGTH_LEN bitsToBytes(128) +#define SHA512_224_DIGEST_LEN bitsToBytes(224) +#define SHA512_256_DIGEST_LEN bitsToBytes(256) +#define SHA384_DIGEST_LEN bitsToBytes(384) +#define SHA512_DIGEST_LEN bitsToBytes(512) +#define MODE_SHA_512_224 0 << 2 +#define MODE_SHA_512_256 1 << 2 +#define MODE_SHA_384 2 << 2 +#define MODE_SHA_512 3 << 2 + +// current name and version values +#define SHA1_NAME0 "sha1" +#define SHA1_NAME1 " " +#define SHA1_VERSION "0.50" + +#define SHA256_NAME0 "sha2" +#define SHA256_NAME1 "-256" +#define SHA256_VERSION "0.80" + +#define SHA512_NAME0 "sha2" +#define SHA512_NAME1 "-512" +#define SHA512_VERSION "0.80" + + +//----------------------------------------------------------------- +// TRNG segment. +//----------------------------------------------------------------- +// addresses and codes for the TRNG cores */ +#define TRNG_ADDR_BASE SEGMENT_OFFSET_RNGS + (0x00 * CORE_SIZE) +#define TRNG_ADDR_NAME0 TRNG_ADDR_BASE + ADDR_NAME0 +#define TRNG_ADDR_NAME1 TRNG_ADDR_BASE + ADDR_NAME1 +#define TRNG_ADDR_VERSION TRNG_ADDR_BASE + ADDR_VERSION +#define TRNG_ADDR_CTRL TRNG_ADDR_BASE + 0x10 +#define TRNG_CTRL_DISCARD 1 +#define TRNG_CTRL_TEST_MODE 2 +#define TRNG_ADDR_STATUS TRNG_ADDR_BASE + 0x11 +// no status bits defined (yet) +#define TRNG_ADDR_DELAY TRNG_ADDR_BASE + 0x13 + +#define ENTROPY1_ADDR_BASE SEGMENT_OFFSET_RNGS + (0x05 * CORE_SIZE) +#define ENTROPY1_ADDR_NAME0 ENTROPY1_ADDR_BASE + ADDR_NAME0 +#define ENTROPY1_ADDR_NAME1 ENTROPY1_ADDR_BASE + ADDR_NAME1 +#define ENTROPY1_ADDR_VERSION ENTROPY1_ADDR_BASE + ADDR_VERSION +#define ENTROPY1_ADDR_CTRL ENTROPY1_ADDR_BASE + 0x10 +#define ENTROPY1_CTRL_ENABLE 1 +#define ENTROPY1_ADDR_STATUS ENTROPY1_ADDR_BASE + 0x11 +#define ENTROPY1_STATUS_VALID 1 +#define ENTROPY1_ADDR_ENTROPY ENTROPY1_ADDR_BASE + 0x20 +#define ENTROPY1_ADDR_DELTA ENTROPY1_ADDR_BASE + 0x30 + +#define ENTROPY2_ADDR_BASE SEGMENT_OFFSET_RNGS + (0x06 * CORE_SIZE) +#define ENTROPY2_ADDR_NAME0 ENTROPY2_ADDR_BASE + ADDR_NAME0 +#define ENTROPY2_ADDR_NAME1 ENTROPY2_ADDR_BASE + ADDR_NAME1 +#define ENTROPY2_ADDR_VERSION ENTROPY2_ADDR_BASE + ADDR_VERSION +#define ENTROPY2_ADDR_CTRL ENTROPY2_ADDR_BASE + 0x10 +#define ENTROPY2_CTRL_ENABLE 1 +#define ENTROPY2_ADDR_STATUS ENTROPY2_ADDR_BASE + 0x11 +#define ENTROPY2_STATUS_VALID 1 +#define ENTROPY2_ADDR_OPA ENTROPY2_ADDR_BASE + 0x18 +#define ENTROPY2_ADDR_OPB ENTROPY2_ADDR_BASE + 0x19 +#define ENTROPY2_ADDR_ENTROPY ENTROPY2_ADDR_BASE + 0x20 +#define ENTROPY2_ADDR_RAW ENTROPY2_ADDR_BASE + 0x21 +#define ENTROPY2_ADDR_ROSC ENTROPY2_ADDR_BASE + 0x22 + +#define MIXER_ADDR_BASE SEGMENT_OFFSET_RNGS + (0x0a * CORE_SIZE) +#define MIXER_ADDR_NAME0 MIXER_ADDR_BASE + ADDR_NAME0 +#define MIXER_ADDR_NAME1 MIXER_ADDR_BASE + ADDR_NAME1 +#define MIXER_ADDR_VERSION MIXER_ADDR_BASE + ADDR_VERSION +#define MIXER_ADDR_CTRL MIXER_ADDR_BASE + 0x10 +#define MIXER_CTRL_ENABLE 1 +#define MIXER_CTRL_RESTART 2 +#define MIXER_ADDR_STATUS MIXER_ADDR_BASE + 0x11 +// no status bits defined (yet) +#define MIXER_ADDR_TIMEOUT MIXER_ADDR_BASE + 0x20 + +#define CSPRNG_ADDR_BASE SEGMENT_OFFSET_RNGS + (0x0b * CORE_SIZE) +#define CSPRNG_ADDR_NAME0 CSPRNG_ADDR_BASE + ADDR_NAME0 +#define CSPRNG_ADDR_NAME1 CSPRNG_ADDR_BASE + ADDR_NAME1 +#define CSPRNG_ADDR_VERSION CSPRNG_ADDR_BASE + ADDR_VERSION +#define CSPRNG_ADDR_CTRL CSPRNG_ADDR_BASE + 0x10 +#define CSPRNG_CTRL_ENABLE 1 +#define CSPRNG_CTRL_SEED 2 +#define CSPRNG_ADDR_STATUS CSPRNG_ADDR_BASE + 0x11 +#define CSPRNG_STATUS_VALID 1 +#define CSPRNG_ADDR_RANDOM CSPRNG_ADDR_BASE + 0x20 +#define CSPRNG_ADDR_NROUNDS CSPRNG_ADDR_BASE + 0x40 +#define CSPRNG_ADDR_NBLOCKS_LO CSPRNG_ADDR_BASE + 0x41 +#define CSPRNG_ADDR_NBLOCKS_HI CSPRNG_ADDR_BASE + 0x42 + +// current name and version values +#define TRNG_NAME0 "trng" +#define TRNG_NAME1 " " +#define TRNG_VERSION "0.50" + +#define AVALANCHE_ENTROPY_NAME0 "extn" +#define AVALANCHE_ENTROPY_NAME1 "oise" +#define AVALANCHE_ENTROPY_VERSION "0.10" + +#define ROSC_ENTROPY_NAME0 "rosc" +#define ROSC_ENTROPY_NAME1 " ent" +#define ROSC_ENTROPY_VERSION "0.10" + +#define CSPRNG_NAME0 "cspr" +#define CSPRNG_NAME1 "ng " +#define CSPRNG_VERSION "0.50" + + +// ----------------------------------------------------------------- +// CIPHERS segment. +// ----------------------------------------------------------------- +// aes core. +#define AES_ADDR_BASE SEGMENT_OFFSET_CIPHERS + (0 * CORE_SIZE) +#define AES_ADDR_NAME0 AES_ADDR_BASE + ADDR_NAME0 +#define AES_ADDR_NAME1 AES_ADDR_BASE + ADDR_NAME1 +#define AES_ADDR_VERSION AES_ADDR_BASE + ADDR_VERSION +#define AES_ADDR_CTRL AES_ADDR_BASE + ADDR_CTRL +#define AES_ADDR_STATUS AES_ADDR_BASE + ADDR_STATUS + +#define AES_ADDR_CONFIG AES_ADDR_BASE + 0x0a +#define AES_CONFIG_ENCDEC 1 +#define AES_CONFIG_KEYLEN 2 + +#define AES_ADDR_KEY0 AES_ADDR_BASE + 0x10 +#define AES_ADDR_KEY1 AES_ADDR_BASE + 0x11 +#define AES_ADDR_KEY2 AES_ADDR_BASE + 0x12 +#define AES_ADDR_KEY3 AES_ADDR_BASE + 0x13 +#define AES_ADDR_KEY4 AES_ADDR_BASE + 0x14 +#define AES_ADDR_KEY5 AES_ADDR_BASE + 0x15 +#define AES_ADDR_KEY6 AES_ADDR_BASE + 0x16 +#define AES_ADDR_KEY7 AES_ADDR_BASE + 0x17 + +#define AES_ADDR_BLOCK0 AES_ADDR_BASE + 0x20 +#define AES_ADDR_BLOCK1 AES_ADDR_BASE + 0x21 +#define AES_ADDR_BLOCK2 AES_ADDR_BASE + 0x22 +#define AES_ADDR_BLOCK3 AES_ADDR_BASE + 0x23 + +#define AES_ADDR_RESULT0 AES_ADDR_BASE + 0x30 +#define AES_ADDR_RESULT1 AES_ADDR_BASE + 0x31 +#define AES_ADDR_RESULT2 AES_ADDR_BASE + 0x32 +#define AES_ADDR_RESULT3 AES_ADDR_BASE + 0x33 + +// current name and version values +#define AES_CORE_NAME0 "aes " +#define AES_CORE_NAME1 " " +#define AES_CORE_VERSION "0.80" + + +// Chacha core +#define CHACHA_ADDR_BASE SEGMENT_OFFSET_CIPHERS + (1 * CORE_SIZE) +#define CHACHA_ADDR_NAME0 CHACHA_ADDR_BASE + ADDR_NAME0 +#define CHACHA_ADDR_NAME1 CHACHA_ADDR_BASE + ADDR_NAME1 +#define CHACHA_ADDR_VERSION CHACHA_ADDR_BASE + ADDR_VERSION +#define CHACHA_ADDR_CTRL CHACHA_ADDR_BASE + ADDR_CTRL +#define CHACHA_ADDR_STATUS CHACHA_ADDR_BASE + ADDR_STATUS + +#define CHACHA_ADDR_KEYLEN CHACHA_ADDR_BASE + 0x0a +#define CHACHA_KEYLEN 1 + +#define CHACHA_ADDR_ROUNDS CHACHA_ADDR_BASE + 0x0b + +#define CHACHA_ADDR_KEY0 CHACHA_ADDR_BASE + 0x10 +#define CHACHA_ADDR_KEY1 CHACHA_ADDR_BASE + 0x11 +#define CHACHA_ADDR_KEY2 CHACHA_ADDR_BASE + 0x12 +#define CHACHA_ADDR_KEY3 CHACHA_ADDR_BASE + 0x13 +#define CHACHA_ADDR_KEY4 CHACHA_ADDR_BASE + 0x14 +#define CHACHA_ADDR_KEY5 CHACHA_ADDR_BASE + 0x15 +#define CHACHA_ADDR_KEY6 CHACHA_ADDR_BASE + 0x16 +#define CHACHA_ADDR_KEY7 CHACHA_ADDR_BASE + 0x17 + +#define CHACHA_ADDR_IV0 CHACHA_ADDR_BASE + 0x20 +#define CHACHA_ADDR_IV1 CHACHA_ADDR_BASE + 0x21 + +#define CHACHA_ADDR_DATA_IN0 CHACHA_ADDR_BASE + 0x40 +#define CHACHA_ADDR_DATA_IN1 CHACHA_ADDR_BASE + 0x41 +#define CHACHA_ADDR_DATA_IN2 CHACHA_ADDR_BASE + 0x42 +#define CHACHA_ADDR_DATA_IN3 CHACHA_ADDR_BASE + 0x43 +#define CHACHA_ADDR_DATA_IN4 CHACHA_ADDR_BASE + 0x44 +#define CHACHA_ADDR_DATA_IN5 CHACHA_ADDR_BASE + 0x45 +#define CHACHA_ADDR_DATA_IN6 CHACHA_ADDR_BASE + 0x46 +#define CHACHA_ADDR_DATA_IN7 CHACHA_ADDR_BASE + 0x47 +#define CHACHA_ADDR_DATA_IN8 CHACHA_ADDR_BASE + 0x48 +#define CHACHA_ADDR_DATA_IN9 CHACHA_ADDR_BASE + 0x49 +#define CHACHA_ADDR_DATA_IN10 CHACHA_ADDR_BASE + 0x4a +#define CHACHA_ADDR_DATA_IN11 CHACHA_ADDR_BASE + 0x4b +#define CHACHA_ADDR_DATA_IN12 CHACHA_ADDR_BASE + 0x4c +#define CHACHA_ADDR_DATA_IN13 CHACHA_ADDR_BASE + 0x4d +#define CHACHA_ADDR_DATA_IN14 CHACHA_ADDR_BASE + 0x4e +#define CHACHA_ADDR_DATA_IN15 CHACHA_ADDR_BASE + 0x4f + +#define CHACHA_ADDR_DATA_OUT0 CHACHA_ADDR_BASE + 0x80 +#define CHACHA_ADDR_DATA_OUT1 CHACHA_ADDR_BASE + 0x81 +#define CHACHA_ADDR_DATA_OUT2 CHACHA_ADDR_BASE + 0x82 +#define CHACHA_ADDR_DATA_OUT3 CHACHA_ADDR_BASE + 0x83 +#define CHACHA_ADDR_DATA_OUT4 CHACHA_ADDR_BASE + 0x84 +#define CHACHA_ADDR_DATA_OUT5 CHACHA_ADDR_BASE + 0x85 +#define CHACHA_ADDR_DATA_OUT6 CHACHA_ADDR_BASE + 0x86 +#define CHACHA_ADDR_DATA_OUT7 CHACHA_ADDR_BASE + 0x87 +#define CHACHA_ADDR_DATA_OUT8 CHACHA_ADDR_BASE + 0x88 +#define CHACHA_ADDR_DATA_OUT9 CHACHA_ADDR_BASE + 0x89 +#define CHACHA_ADDR_DATA_OUT10 CHACHA_ADDR_BASE + 0x8a +#define CHACHA_ADDR_DATA_OUT11 CHACHA_ADDR_BASE + 0x8b +#define CHACHA_ADDR_DATA_OUT12 CHACHA_ADDR_BASE + 0x8c +#define CHACHA_ADDR_DATA_OUT13 CHACHA_ADDR_BASE + 0x8d +#define CHACHA_ADDR_DATA_OUT14 CHACHA_ADDR_BASE + 0x8e +#define CHACHA_ADDR_DATA_OUT15 CHACHA_ADDR_BASE + 0x8f + +// current name and version values +#define CHACHA_NAME0 "chac" +#define CHACHA_NAME1 "ha " +#define CHACHA_VERSION "0.80" + + +// ----------------------------------------------------------------- +// MATH segment. +// ----------------------------------------------------------------- +// Modexp core. +#define MODEXP_ADDR_BASE SEGMENT_OFFSET_MATH + (0x00 * CORE_SIZE) +#define MODEXP_ADDR_NAME0 MODEXP_ADDR_BASE + ADDR_NAME0 +#define MODEXP_ADDR_NAME1 MODEXP_ADDR_BASE + ADDR_NAME1 +#define MODEXP_ADDR_VERSION MODEXP_ADDR_BASE + ADDR_VERSION +#define MODEXP_ADDR_CTRL MODEXP_ADDR_BASE + ADDR_CTRL +#define MODEXP_CTRL_INIT_BIT 1 +#define MODEXP_CTRL_NEXT_BIT 2 +#define MODEXP_ADDR_STATUS MODEXP_ADDR_BASE + ADDR_STATUS + +#define MODEXP_ADDR_DELAY MODEXP_ADDR_BASE + 0x13 +#define MODEXP_STATUS_READY 1 + +#define MODEXP_MODULUS_LENGTH MODEXP_ADDR_BASE + 0x20 +#define MODEXP_EXPONENT_LENGTH MODEXP_ADDR_BASE + 0x21 +#define MODEXP_LENGTH MODEXP_ADDR_BASE + 0x22 + +#define MODEXP_MODULUS_PTR_RST MODEXP_ADDR_BASE + 0x30 +#define MODEXP_MODULUS_DATA MODEXP_ADDR_BASE + 0x31 + +#define MODEXP_EXPONENT_PTR_RST MODEXP_ADDR_BASE + 0x40 +#define MODEXP_EXPONENT_DATA MODEXP_ADDR_BASE + 0x41 + +#define MODEXP_MESSAGE_PTR_RST MODEXP_ADDR_BASE + 0x50 +#define MODEXP_MESSAGE_DATA MODEXP_ADDR_BASE + 0x51 + +#define MODEXP_RESULT_PTR_RST MODEXP_ADDR_BASE + 0x60 +#define MODEXP_RESULT_DATA MODEXP_ADDR_BASE + 0x61 + +#define MODEXP_NAME0 "mode" +#define MODEXP_NAME1 "xp " +#define MODEXP_VERSION "0.51" + + +//------------------------------------------------------------------ +// Public I/O functions +//------------------------------------------------------------------ +void hal_io_set_debug(int onoff); +int hal_io_write(off_t offset, const uint8_t *buf, size_t len); +int hal_io_read(off_t offset, uint8_t *buf, size_t len); +int hal_io_expected(off_t offset, const uint8_t *expected, size_t len); +int hal_io_init(off_t offset); +int hal_io_next(off_t offset); +int hal_io_wait(off_t offset, uint8_t status, int *count); +int hal_io_wait_ready(off_t offset); +int hal_io_wait_valid(off_t offset); + + +//====================================================================== +// EOF cryptech.h +//====================================================================== diff --git a/hal_io_eim.c b/hal_io_eim.c new file mode 100644 index 0000000..ebffd24 --- /dev/null +++ b/hal_io_eim.c @@ -0,0 +1,208 @@ +/* + * hal_io_eim.c + * ------------ + * This module contains common code to talk to the FPGA over the EIM bus. + * + * Author: Paul Selkirk + * Copyright (c) 2014-2015, NORDUnet A/S All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * - Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * - Neither the name of the NORDUnet nor the names of its contributors may + * be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS + * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A + * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include +#include +#include +#include +#include +#include +#include + +#include "novena-eim.h" +#include "cryptech.h" + +static int debug = 0; +static int inited = 0; + +/* ---------------- EIM low-level code ---------------- */ + +static int init(void) +{ + if (inited) + return 0; + + if (eim_setup() != 0) { + fprintf(stderr, "EIM setup failed\n"); + return -1; + } + + inited = 1; + return 0; +} + +/* translate cryptech register number to EIM address + * + * register number format: + * 3 bits segment selector + * 5 bits core selector (6 bits in native eim) + * 8 bits register selector + * + * sss ccccc rrrrrrrr => 00001000000000 sss 0 ccccc rrrrrrrr 00 + */ +static off_t eim_offset(off_t offset) +{ + return EIM_BASE_ADDR + ((offset & ~0x1fff) << 3) + ((offset & 0x1fff) << 2); +} + +/* ---------------- test-case low-level code ---------------- */ + +void hal_io_set_debug(int onoff) +{ + debug = onoff; +} + +static void dump(char *label, const uint8_t *buf, size_t len) +{ + if (debug) { + int i; + printf("%s [", label); + for (i = 0; i < len; ++i) + printf(" %02x", buf[i]); + printf(" ]\n"); + } +} + +int hal_io_write(off_t offset, const uint8_t *buf, size_t len) +{ + if (init() != 0) + return -1; + + dump("write ", buf, len); + + offset = eim_offset(offset); + for (; len > 0; offset += 4, buf += 4, len -= 4) { + uint32_t val; + val = htonl(*(uint32_t *)buf); + eim_write_32(offset, &val); + } + + return 0; +} + +int hal_io_read(off_t offset, uint8_t *buf, size_t len) +{ + uint8_t *rbuf = buf; + int rlen = len; + + if (init() != 0) + return -1; + + offset = eim_offset(offset); + for (; rlen > 0; offset += 4, rbuf += 4, rlen -= 4) { + uint32_t val; + eim_read_32(offset, &val); + *(uint32_t *)rbuf = ntohl(val); + } + + dump("read ", buf, len); + + return 0; +} + +int hal_io_expected(off_t offset, const uint8_t *expected, size_t len) +{ + uint8_t *buf; + int i; + + buf = malloc(len); + if (buf == NULL) { + perror("malloc"); + return 1; + } + dump("expect", expected, len); + + if (hal_io_read(offset, buf, len) != 0) + goto errout; + + for (i = 0; i < len; ++i) + if (buf[i] != expected[i]) { + fprintf(stderr, "response byte %d: expected 0x%02x, got 0x%02x\n", + i, expected[i], buf[i]); + goto errout; + } + + free(buf); + return 0; +errout: + free(buf); + return 1; +} + +int hal_io_init(off_t offset) +{ + uint8_t buf[4] = { 0, 0, 0, CTRL_INIT }; + + return hal_io_write(offset, buf, 4); +} + +int hal_io_next(off_t offset) +{ + uint8_t buf[4] = { 0, 0, 0, CTRL_NEXT }; + + return hal_io_write(offset, buf, 4); +} + +int hal_io_wait(off_t offset, uint8_t status, int *count) +{ + uint8_t buf[4]; + int i; + + for (i = 1; ; ++i) { + if (count && (*count > 0) && (i >= *count)) { + fprintf(stderr, "hal_io_wait timed out\n"); + return 1; + } + if (hal_io_read(offset, buf, 4) != 0) + return -1; + if (buf[3] & status) { + if (count) + *count = i; + return 0; + } + } +} + +int hal_io_wait_ready(off_t offset) +{ + int limit = 256; + return hal_io_wait(offset, STATUS_READY, &limit); +} + +int hal_io_wait_valid(off_t offset) +{ + int limit = 256; + return hal_io_wait(offset, STATUS_VALID, &limit); +} diff --git a/hal_io_i2c.c b/hal_io_i2c.c new file mode 100644 index 0000000..f521e73 --- /dev/null +++ b/hal_io_i2c.c @@ -0,0 +1,339 @@ +/* + * hal_io_i2c.c + * ------------ + * This module contains common code to talk to the FPGA over the I2C bus. + * + * Author: Paul Selkirk + * Copyright (c) 2014-2015, NORDUnet A/S All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * - Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * - Neither the name of the NORDUnet nor the names of its contributors may + * be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS + * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A + * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include +#include +#include +#include +#include +#include + +#include "cryptech.h" + +#define I2C_dev "/dev/i2c-2" +#define I2C_addr 0x0f +#define I2C_SLAVE 0x0703 + +static int debug = 0; +static int i2cfd = -1; + +/* ---------------- I2C low-level code ---------------- */ + +void hal_io_set_debug(int onoff) +{ + debug = onoff; +} + +static void dump(char *label, const uint8_t *buf, size_t len) +{ + if (debug) { + int i; + printf("%s [", label); + for (i = 0; i < len; ++i) + printf(" %02x", buf[i]); + printf(" ]\n"); + } +} + +static void i2c_close(void) +{ + close(i2cfd); +} + +static int i2c_open(void) +{ + if (i2cfd >= 0) + return 0; + + i2cfd = open(I2C_dev, O_RDWR); + if (i2cfd < 0) { + fprintf(stderr, "Unable to open %s: ", I2C_dev); + perror(""); + i2cfd = 0; + return 1; + } + + if (ioctl(i2cfd, I2C_SLAVE, I2C_addr) < 0) { + fprintf(stderr, "Unable to set I2C slave device 0x%02x: ", I2C_addr); + perror(""); + return 1; + } + + if (atexit(i2c_close) != 0) { + fprintf(stderr, "Unable to set I2C atexit handler."); + return 1; + } + + return 0; +} + +static int i2c_write(const uint8_t *buf, size_t len) +{ + if (i2c_open() != 0) + return 1; + + dump("write ", buf, len); + + if (write(i2cfd, buf, len) != len) { + perror("i2c write failed"); + return 1; + } + + return 0; +} + +static int i2c_read(uint8_t *b) +{ + if (i2c_open() != 0) + return 1; + + /* read() on the i2c device only returns one byte at a time, + * and hal_io_get_resp() needs to parse the response one byte at a time + */ + if (read(i2cfd, b, 1) != 1) { + perror("i2c read failed"); + return 1; + } + + return 0; +} + +/* ---------------- test-case low-level code ---------------- */ + +/* coretest command codes */ +#define SOC 0x55 +#define EOC 0xaa +#define READ_CMD 0x10 +#define WRITE_CMD 0x11 +#define RESET_CMD 0x01 + +/* coretest response codes */ +#define SOR 0xaa +#define EOR 0x55 +#define READ_OK 0x7f +#define WRITE_OK 0x7e +#define RESET_OK 0x7d +#define UNKNOWN 0xfe +#define ERROR 0xfd + +static int hal_io_send_write_cmd(off_t offset, const uint8_t *data) +{ + uint8_t buf[9] = { SOC, WRITE_CMD, (offset >> 8) & 0xff, offset & 0xff, + data[0], data[1], data[2], data[3], EOC }; + + return i2c_write(buf, sizeof(buf)); +} + +static int hal_io_send_read_cmd(off_t offset) +{ + uint8_t buf[5] = { SOC, READ_CMD, (offset >> 8) & 0xff, offset & 0xff, EOC }; + + return i2c_write(buf, sizeof(buf)); +} + +static int hal_io_get_resp(uint8_t *buf, size_t len) +{ + int i; + + for (i = 0; i < len; ++i) { + if (i2c_read(&buf[i]) != 0) + return 1; + if ((i == 0) && (buf[i] != SOR)) { + /* we've gotten out of sync, and there's probably nothing we can do */ + fprintf(stderr, "response byte 0: expected 0x%02x (SOR), got 0x%02x\n", + SOR, buf[0]); + return 1; + } + else if (i == 1) { /* response code */ + switch (buf[i]) { + case READ_OK: + len = 9; + break; + case WRITE_OK: + len = 5; + break; + case RESET_OK: + len = 3; + break; + case ERROR: + case UNKNOWN: + len = 4; + break; + default: + /* we've gotten out of sync, and there's probably nothing we can do */ + fprintf(stderr, "unknown response code 0x%02x\n", buf[i]); + return 1; + } + } + } + + dump("read ", buf, len); + + return 0; +} + +static int hal_io_compare(uint8_t *buf, const uint8_t *expected, size_t len) +{ + int i; + + /* start at byte 1 because SOR has already been tested */ + for (i = 1; i < len; ++i) { + if (buf[i] != expected[i]) { + fprintf(stderr, "response byte %d: expected 0x%02x, got 0x%02x\n", + i, expected[i], buf[i]); + return 1; + } + } + + return 0; +} + +static int hal_io_get_write_resp(off_t offset) +{ + uint8_t buf[5]; + uint8_t expected[5] = { SOR, WRITE_OK, (offset >> 8) & 0xff, offset & 0xff, EOR }; + + return + hal_io_get_resp(buf, sizeof(buf)) || + hal_io_compare(buf, expected, sizeof(expected)); +} + +static int hal_io_get_read_resp(off_t offset, uint8_t *data) +{ + uint8_t buf[9]; + uint8_t expected[4] = { SOR, READ_OK, (offset >> 8) & 0xff, offset & 0xff }; + + if ((hal_io_get_resp(buf, sizeof(buf)) != 0) || + (hal_io_compare(buf, expected, 4) != 0) || buf[8] != EOR) + return 1; + + data[0] = buf[4]; + data[1] = buf[5]; + data[2] = buf[6]; + data[3] = buf[7]; + + return 0; +} + +static int hal_io_get_read_resp_expected(off_t offset, const uint8_t *data) +{ + uint8_t buf[9]; + uint8_t expected[9] = { SOR, READ_OK, (offset >> 8) & 0xff, offset & 0xff, + data[0], data[1], data[2], data[3], EOR }; + + dump("expect", expected, 9); + + return (hal_io_get_resp(buf, sizeof(buf)) || + hal_io_compare(buf, expected, sizeof(buf))); +} + +int hal_io_write(off_t offset, const uint8_t *buf, size_t len) +{ + for (; len > 0; offset++, buf += 4, len -= 4) { + if (hal_io_send_write_cmd(offset, buf) || + hal_io_get_write_resp(offset)) + return 1; + } + + return 0; +} + +int hal_io_read(off_t offset, uint8_t *buf, size_t len) +{ + for (; len > 0; offset++, buf += 4, len -= 4) { + if (hal_io_send_read_cmd(offset) || + hal_io_get_read_resp(offset, buf)) + return 1; + } + + return 0; +} + +int hal_io_expected(off_t offset, const uint8_t *buf, size_t len) +{ + for (; len > 0; offset++, buf += 4, len -= 4) { + if (hal_io_send_read_cmd(offset) || + hal_io_get_read_resp_expected(offset, buf)) + return 1; + } + + return 0; +} + +int hal_io_init(off_t offset) +{ + uint8_t buf[4] = { 0, 0, 0, CTRL_INIT }; + + return hal_io_write(offset, buf, 4); +} + +int hal_io_next(off_t offset) +{ + uint8_t buf[4] = { 0, 0, 0, CTRL_NEXT }; + + return hal_io_write(offset, buf, 4); +} + +int hal_io_wait(off_t offset, uint8_t status, int *count) +{ + uint8_t buf[4]; + int i; + + for (i = 1; ; ++i) { + if (count && (*count > 0) && (i >= *count)) { + fprintf(stderr, "hal_io_wait timed out\n"); + return 1; + } + if (hal_io_read(offset, buf, 4) != 0) + return -1; + if (buf[3] & status) { + if (count) + *count = i; + return 0; + } + } +} + +int hal_io_wait_ready(off_t offset) +{ + int limit = 10; + return hal_io_wait(offset, STATUS_READY, &limit); +} + +int hal_io_wait_valid(off_t offset) +{ + int limit = 10; + return hal_io_wait(offset, STATUS_VALID, &limit); +} diff --git a/novena-eim.c b/novena-eim.c new file mode 100644 index 0000000..85bfac0 --- /dev/null +++ b/novena-eim.c @@ -0,0 +1,708 @@ +/* + * novena-eim.c + * ------------ + * This module contains the userland magic to set up and use the EIM bus. + * + * + * Author: Pavel Shatov + * Copyright (c) 2014-2015, NORDUnet A/S All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * - Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * - Neither the name of the NORDUnet nor the names of its contributors may + * be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS + * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A + * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +//------------------------------------------------------------------------------ +// Headers +//------------------------------------------------------------------------------ +#include +#include +#include +#include +#include +#include +#include + +#include "novena-eim.h" + + +//------------------------------------------------------------------------------ +// Defines +//------------------------------------------------------------------------------ +#define MEMORY_DEVICE "/dev/mem" + +#define IOMUXC_MUX_MODE_ALT0 0 // 000 + +#define IOMUXC_PAD_CTL_SRE_FAST 1 // 1 +#define IOMUXC_PAD_CTL_DSE_33_OHM 7 // 111 +#define IOMUXC_PAD_CTL_SPEED_MEDIUM_10 2 // 10 +#define IOMUXC_PAD_CTL_ODE_DISABLED 0 // 0 +#define IOMUXC_PAD_CTL_PKE_DISABLED 0 // 0 +#define IOMUXC_PAD_CTL_PUE_PULL 1 // 1 +#define IOMUXC_PAD_CTL_PUS_100K_OHM_PU 2 // 10 +#define IOMUXC_PAD_CTL_HYS_DISABLED 0 // 0 + +#define CCM_CGR_OFF 0 // 00 +#define CCM_CGR_ON_EXCEPT_STOP 3 // 11 + + +//------------------------------------------------------------------------------ +// CPU Registers +//------------------------------------------------------------------------------ +enum IMX6DQ_REGISTER_OFFSET +{ + IOMUXC_SW_MUX_CTL_PAD_EIM_CS0_B = 0x020E00F8, + IOMUXC_SW_MUX_CTL_PAD_EIM_OE_B = 0x020E0100, + IOMUXC_SW_MUX_CTL_PAD_EIM_RW = 0x020E0104, + IOMUXC_SW_MUX_CTL_PAD_EIM_LBA_B = 0x020E0108, + IOMUXC_SW_MUX_CTL_PAD_EIM_AD00 = 0x020E0114, + IOMUXC_SW_MUX_CTL_PAD_EIM_AD01 = 0x020E0118, + IOMUXC_SW_MUX_CTL_PAD_EIM_AD02 = 0x020E011C, + IOMUXC_SW_MUX_CTL_PAD_EIM_AD03 = 0x020E0120, + IOMUXC_SW_MUX_CTL_PAD_EIM_AD04 = 0x020E0124, + IOMUXC_SW_MUX_CTL_PAD_EIM_AD05 = 0x020E0128, + IOMUXC_SW_MUX_CTL_PAD_EIM_AD06 = 0x020E012C, + IOMUXC_SW_MUX_CTL_PAD_EIM_AD07 = 0x020E0130, + IOMUXC_SW_MUX_CTL_PAD_EIM_AD08 = 0x020E0134, + IOMUXC_SW_MUX_CTL_PAD_EIM_AD09 = 0x020E0138, + IOMUXC_SW_MUX_CTL_PAD_EIM_AD10 = 0x020E013C, + IOMUXC_SW_MUX_CTL_PAD_EIM_AD11 = 0x020E0140, + IOMUXC_SW_MUX_CTL_PAD_EIM_AD12 = 0x020E0144, + IOMUXC_SW_MUX_CTL_PAD_EIM_AD13 = 0x020E0148, + IOMUXC_SW_MUX_CTL_PAD_EIM_AD14 = 0x020E014C, + IOMUXC_SW_MUX_CTL_PAD_EIM_AD15 = 0x020E0150, + IOMUXC_SW_MUX_CTL_PAD_EIM_WAIT_B = 0x020E0154, + IOMUXC_SW_MUX_CTL_PAD_EIM_BCLK = 0x020E0158, + + IOMUXC_SW_PAD_CTL_PAD_EIM_CS0_B = 0x020E040C, + IOMUXC_SW_PAD_CTL_PAD_EIM_OE_B = 0x020E0414, + IOMUXC_SW_PAD_CTL_PAD_EIM_RW = 0x020E0418, + IOMUXC_SW_PAD_CTL_PAD_EIM_LBA_B = 0x020E041C, + IOMUXC_SW_PAD_CTL_PAD_EIM_AD00 = 0x020E0428, + IOMUXC_SW_PAD_CTL_PAD_EIM_AD01 = 0x020E042C, + IOMUXC_SW_PAD_CTL_PAD_EIM_AD02 = 0x020E0430, + IOMUXC_SW_PAD_CTL_PAD_EIM_AD03 = 0x020E0434, + IOMUXC_SW_PAD_CTL_PAD_EIM_AD04 = 0x020E0438, + IOMUXC_SW_PAD_CTL_PAD_EIM_AD05 = 0x020E043C, + IOMUXC_SW_PAD_CTL_PAD_EIM_AD06 = 0x020E0440, + IOMUXC_SW_PAD_CTL_PAD_EIM_AD07 = 0x020E0444, + IOMUXC_SW_PAD_CTL_PAD_EIM_AD08 = 0x020E0448, + IOMUXC_SW_PAD_CTL_PAD_EIM_AD09 = 0x020E044C, + IOMUXC_SW_PAD_CTL_PAD_EIM_AD10 = 0x020E0450, + IOMUXC_SW_PAD_CTL_PAD_EIM_AD11 = 0x020E0454, + IOMUXC_SW_PAD_CTL_PAD_EIM_AD12 = 0x020E0458, + IOMUXC_SW_PAD_CTL_PAD_EIM_AD13 = 0x020E045C, + IOMUXC_SW_PAD_CTL_PAD_EIM_AD14 = 0x020E0460, + IOMUXC_SW_PAD_CTL_PAD_EIM_AD15 = 0x020E0464, + IOMUXC_SW_PAD_CTL_PAD_EIM_WAIT_B = 0x020E0468, + IOMUXC_SW_PAD_CTL_PAD_EIM_BCLK = 0x020E046C, + + CCM_CCGR6 = 0x020C4080, + + EIM_CS0GCR1 = 0x021B8000, + EIM_CS0GCR2 = 0x021B8004, + EIM_CS0RCR1 = 0x021B8008, + EIM_CS0RCR2 = 0x021B800C, + EIM_CS0WCR1 = 0x021B8010, + EIM_CS0WCR2 = 0x021B8014, + + EIM_WCR = 0x021B8090, + EIM_WIAR = 0x021B8094, + EIM_EAR = 0x021B8098, +}; + + +//------------------------------------------------------------------------------ +// Structures +//------------------------------------------------------------------------------ +struct IOMUXC_SW_MUX_CTL_PAD_EIM +{ + unsigned int mux_mode : 3; + unsigned int reserved_3 : 1; + unsigned int sion : 1; + unsigned int reserved_31_5 : 27; +}; + +struct IOMUXC_SW_PAD_CTL_PAD_EIM +{ + unsigned int sre : 1; + unsigned int reserved_2_1 : 2; + unsigned int dse : 3; + unsigned int speed : 2; + unsigned int reserved_10_8 : 3; + unsigned int ode : 1; + unsigned int pke : 1; + unsigned int pue : 1; + unsigned int pus : 2; + unsigned int hys : 1; + unsigned int reserved_31_17 : 15; +}; + +struct CCM_CCGR6 +{ + unsigned int cg0_usboh3 : 2; + unsigned int cg1_usdhc1 : 2; + unsigned int cg2_usdhc2 : 2; + unsigned int cg3_usdhc3 : 2; + + unsigned int cg3_usdhc4 : 2; + unsigned int cg5_eim_slow : 2; + unsigned int cg6_vdoaxiclk : 2; + unsigned int cg7_vpu : 2; + + unsigned int cg8_reserved : 2; + unsigned int cg9_reserved : 2; + unsigned int cg10_reserved : 2; + unsigned int cg11_reserved : 2; + + unsigned int cg12_reserved : 2; + unsigned int cg13_reserved : 2; + unsigned int cg14_reserved : 2; + unsigned int cg15_reserved : 2; +}; + +struct EIM_CS_GCR1 +{ + unsigned int csen : 1; + unsigned int swr : 1; + unsigned int srd : 1; + unsigned int mum : 1; + unsigned int wfl : 1; + unsigned int rfl : 1; + unsigned int cre : 1; + unsigned int crep : 1; + unsigned int bl : 3; + unsigned int wc : 1; + unsigned int bcd : 2; + unsigned int bcs : 2; + unsigned int dsz : 3; + unsigned int sp : 1; + unsigned int csrec : 3; + unsigned int aus : 1; + unsigned int gbc : 3; + unsigned int wp : 1; + unsigned int psz : 4; +}; + +struct EIM_CS_GCR2 +{ + unsigned int adh : 2; + unsigned int reserved_3_2 : 2; + unsigned int daps : 4; + unsigned int dae : 1; + unsigned int dap : 1; + unsigned int reserved_11_10 : 2; + unsigned int mux16_byp_grant : 1; + unsigned int reserved_31_13 : 19; +}; + +struct EIM_CS_RCR1 +{ + unsigned int rcsn : 3; + unsigned int reserved_3 : 1; + unsigned int rcsa : 3; + unsigned int reserved_7 : 1; + unsigned int oen : 3; + unsigned int reserved_11 : 1; + unsigned int oea : 3; + unsigned int reserved_15 : 1; + unsigned int radvn : 3; + unsigned int ral : 1; + unsigned int radva : 3; + unsigned int reserved_23 : 1; + unsigned int rwsc : 6; + unsigned int reserved_31_30 : 2; +}; + +struct EIM_CS_RCR2 +{ + unsigned int rben : 3; + unsigned int rbe : 1; + unsigned int rbea : 3; + unsigned int reserved_7 : 1; + unsigned int rl : 2; + unsigned int reserved_11_10 : 2; + unsigned int pat : 3; + unsigned int apr : 1; + unsigned int reserved_31_16 : 16; +}; + +struct EIM_CS_WCR1 +{ + unsigned int wcsn : 3; + unsigned int wcsa : 3; + unsigned int wen : 3; + unsigned int wea : 3; + unsigned int wben : 3; + unsigned int wbea : 3; + unsigned int wadvn : 3; + unsigned int wadva : 3; + unsigned int wwsc : 6; + unsigned int wbed : 1; + unsigned int wal : 1; +}; + +struct EIM_CS_WCR2 +{ + unsigned int wbcdd : 1; + unsigned int reserved_31_1 : 31; +}; + +struct EIM_WCR +{ + unsigned int bcm : 1; + unsigned int gbcd : 2; + unsigned int reserved_3 : 1; + unsigned int inten : 1; + unsigned int intpol : 1; + unsigned int reserved_7_6 : 2; + unsigned int wdog_en : 1; + unsigned int wdog_limit : 2; + unsigned int reserved_31_11 : 21; +}; + +struct EIM_WIAR +{ + unsigned int ips_req : 1; + unsigned int ips_ack : 1; + unsigned int irq : 1; + unsigned int errst : 1; + unsigned int aclk_en : 1; + unsigned int reserved_31_5 : 27; +}; + +struct EIM_EAR +{ + unsigned int error_addr : 32; +}; + + +//------------------------------------------------------------------------------ +// Variables +//------------------------------------------------------------------------------ +static long mem_page_size = 0; +static int mem_dev_fd = -1; +static void * mem_map_ptr = MAP_FAILED; +static off_t mem_base_addr = 0; + + +//------------------------------------------------------------------------------ +// Prototypes +//------------------------------------------------------------------------------ +static void _eim_setup_iomuxc (void); +static void _eim_setup_ccm (void); +static void _eim_setup_eim (void); +static void _eim_cleanup (void); +static off_t _eim_calc_offset (off_t); +static void _eim_remap_mem (off_t); + + +//------------------------------------------------------------------------------ +// Set up EIM bus. Returns 0 on success, -1 on failure. +//------------------------------------------------------------------------------ +int eim_setup(void) +{ + // register cleanup function + if (atexit(_eim_cleanup) != 0) { + fprintf(stderr, "ERROR: atexit() failed.\n"); + return -1; + } + + // determine memory page size to use in mmap() + mem_page_size = sysconf(_SC_PAGESIZE); + if (mem_page_size < 1) { + fprintf(stderr, "ERROR: sysconf(_SC_PAGESIZE) == %ld\n", mem_page_size); + return -1; + } + + // try to open memory device + mem_dev_fd = open(MEMORY_DEVICE, O_RDWR | O_SYNC); + if (mem_dev_fd == -1) { + fprintf(stderr, "ERROR: open(%s) failed.\n", MEMORY_DEVICE); + return -1; + } + + // configure IOMUXC + _eim_setup_iomuxc(); + + // configure Clock Controller Module + _eim_setup_ccm(); + + /* We need to properly configure EIM mode and all the corresponding parameters. + * That's a lot of code, let's do it now. + */ + _eim_setup_eim(); + + // done + return 0; +} + + +//------------------------------------------------------------------------------ +// Shut down EIM bus. This is called automatically on exit(). +//------------------------------------------------------------------------------ +static void _eim_cleanup(void) +{ + // unmap memory if needed + if (mem_map_ptr != MAP_FAILED) + if (munmap(mem_map_ptr, mem_page_size) != 0) + fprintf(stderr, "WARNING: munmap() failed.\n"); + + // close memory device if needed + if (mem_dev_fd != -1) + if (close(mem_dev_fd) != 0) + fprintf(stderr, "WARNING: close() failed.\n"); +} + + +//------------------------------------------------------------------------------ +// Several blocks in the CPU have common pins. We use the I/O MUX Controller +// to configure what block will actually use I/O pins. We wait for the EIM +// module to be able to communicate with the on-board FPGA. +//------------------------------------------------------------------------------ +static void _eim_setup_iomuxc(void) +{ + // create structures + struct IOMUXC_SW_MUX_CTL_PAD_EIM reg_mux; // mux control register + struct IOMUXC_SW_PAD_CTL_PAD_EIM reg_pad; // pad control register + + // setup mux control register + reg_mux.mux_mode = IOMUXC_MUX_MODE_ALT0; // ALT0 mode must be used for EIM + reg_mux.sion = 0; // forced input not needed + reg_mux.reserved_3 = 0; // must be 0 + reg_mux.reserved_31_5 = 0; // must be 0 + + // setup pad control register + reg_pad.sre = IOMUXC_PAD_CTL_SRE_FAST; // fast slew rate + reg_pad.dse = IOMUXC_PAD_CTL_DSE_33_OHM; // highest drive strength + reg_pad.speed = IOMUXC_PAD_CTL_SPEED_MEDIUM_10; // medium speed + reg_pad.ode = IOMUXC_PAD_CTL_ODE_DISABLED; // open drain not needed + reg_pad.pke = IOMUXC_PAD_CTL_PKE_DISABLED; // neither pull nor keeper are needed + reg_pad.pue = IOMUXC_PAD_CTL_PUE_PULL; // doesn't matter actually, because PKE is disabled + reg_pad.pus = IOMUXC_PAD_CTL_PUS_100K_OHM_PU; // doesn't matter actually, because PKE is disabled + reg_pad.hys = IOMUXC_PAD_CTL_HYS_DISABLED; // use CMOS, not Schmitt trigger input + reg_pad.reserved_2_1 = 0; // must be 0 + reg_pad.reserved_10_8 = 0; // must be 0 + reg_pad.reserved_31_17 = 0; // must be 0 + + // all the pins must be configured to use the same ALT0 mode + eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_CS0_B, (uint32_t *)®_mux); + eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_OE_B, (uint32_t *)®_mux); + eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_RW, (uint32_t *)®_mux); + eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_LBA_B, (uint32_t *)®_mux); + eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_AD00, (uint32_t *)®_mux); + eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_AD01, (uint32_t *)®_mux); + eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_AD02, (uint32_t *)®_mux); + eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_AD03, (uint32_t *)®_mux); + eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_AD04, (uint32_t *)®_mux); + eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_AD05, (uint32_t *)®_mux); + eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_AD06, (uint32_t *)®_mux); + eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_AD07, (uint32_t *)®_mux); + eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_AD08, (uint32_t *)®_mux); + eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_AD09, (uint32_t *)®_mux); + eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_AD10, (uint32_t *)®_mux); + eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_AD11, (uint32_t *)®_mux); + eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_AD12, (uint32_t *)®_mux); + eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_AD13, (uint32_t *)®_mux); + eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_AD14, (uint32_t *)®_mux); + eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_AD15, (uint32_t *)®_mux); + eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_WAIT_B, (uint32_t *)®_mux); + eim_write_32(IOMUXC_SW_MUX_CTL_PAD_EIM_BCLK, (uint32_t *)®_mux); + + // we need to configure all the I/O pads too + eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_CS0_B, (uint32_t *)®_pad); + eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_OE_B, (uint32_t *)®_pad); + eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_RW, (uint32_t *)®_pad); + eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_LBA_B, (uint32_t *)®_pad); + eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_AD00, (uint32_t *)®_pad); + eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_AD01, (uint32_t *)®_pad); + eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_AD02, (uint32_t *)®_pad); + eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_AD03, (uint32_t *)®_pad); + eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_AD04, (uint32_t *)®_pad); + eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_AD05, (uint32_t *)®_pad); + eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_AD06, (uint32_t *)®_pad); + eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_AD07, (uint32_t *)®_pad); + eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_AD08, (uint32_t *)®_pad); + eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_AD09, (uint32_t *)®_pad); + eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_AD10, (uint32_t *)®_pad); + eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_AD11, (uint32_t *)®_pad); + eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_AD12, (uint32_t *)®_pad); + eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_AD13, (uint32_t *)®_pad); + eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_AD14, (uint32_t *)®_pad); + eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_AD15, (uint32_t *)®_pad); + eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_WAIT_B, (uint32_t *)®_pad); + eim_write_32(IOMUXC_SW_PAD_CTL_PAD_EIM_BCLK, (uint32_t *)®_pad); +} + + +//------------------------------------------------------------------------------ +// Configure Clock Controller Module to enable clocking of EIM block. +//------------------------------------------------------------------------------ +static void _eim_setup_ccm(void) +{ + // create structure + struct CCM_CCGR6 ccm_ccgr6; + + // read register + eim_read_32(CCM_CCGR6, (uint32_t *)&ccm_ccgr6); + + // modify register + ccm_ccgr6.cg0_usboh3 = CCM_CGR_ON_EXCEPT_STOP; + ccm_ccgr6.cg1_usdhc1 = CCM_CGR_OFF; + ccm_ccgr6.cg2_usdhc2 = CCM_CGR_ON_EXCEPT_STOP; + ccm_ccgr6.cg3_usdhc3 = CCM_CGR_ON_EXCEPT_STOP; + + ccm_ccgr6.cg3_usdhc4 = CCM_CGR_OFF; + ccm_ccgr6.cg5_eim_slow = CCM_CGR_ON_EXCEPT_STOP; + ccm_ccgr6.cg6_vdoaxiclk = CCM_CGR_OFF; + ccm_ccgr6.cg7_vpu = CCM_CGR_OFF; + + ccm_ccgr6.cg8_reserved = 0; + ccm_ccgr6.cg9_reserved = 0; + ccm_ccgr6.cg10_reserved = 0; + ccm_ccgr6.cg11_reserved = 0; + ccm_ccgr6.cg12_reserved = 0; + ccm_ccgr6.cg13_reserved = 0; + ccm_ccgr6.cg14_reserved = 0; + ccm_ccgr6.cg15_reserved = 0; + + // write register + eim_write_32(CCM_CCGR6, (uint32_t *)&ccm_ccgr6); +} + + +//------------------------------------------------------------------------------ +// Configure EIM mode and all the corresponding parameters. That's a lot of code. +//------------------------------------------------------------------------------ +static void _eim_setup_eim(void) +{ + // create structures + struct EIM_CS_GCR1 gcr1; + struct EIM_CS_GCR2 gcr2; + struct EIM_CS_RCR1 rcr1; + struct EIM_CS_RCR2 rcr2; + struct EIM_CS_WCR1 wcr1; + struct EIM_CS_WCR2 wcr2; + + struct EIM_WCR wcr; + struct EIM_WIAR wiar; + struct EIM_EAR ear; + + // read all the registers + eim_read_32(EIM_CS0GCR1, (uint32_t *)&gcr1); + eim_read_32(EIM_CS0GCR2, (uint32_t *)&gcr2); + eim_read_32(EIM_CS0RCR1, (uint32_t *)&rcr1); + eim_read_32(EIM_CS0RCR2, (uint32_t *)&rcr2); + eim_read_32(EIM_CS0WCR1, (uint32_t *)&wcr1); + eim_read_32(EIM_CS0WCR2, (uint32_t *)&wcr2); + + eim_read_32(EIM_WCR, (uint32_t *)&wcr); + eim_read_32(EIM_WIAR, (uint32_t *)&wiar); + eim_read_32(EIM_EAR, (uint32_t *)&ear); + + // manipulate registers as needed + gcr1.csen = 1; // chip select is enabled + gcr1.swr = 1; // write is sync + gcr1.srd = 1; // read is sync + gcr1.mum = 1; // address and data are multiplexed + gcr1.wfl = 0; // write latency is not fixed + gcr1.rfl = 0; // read latency is not fixed + gcr1.cre = 0; // CRE signal not needed + //gcr1.crep = x; // don't care, CRE not used + gcr1.bl = 4; // burst length + gcr1.wc = 0; // write is not continuous + gcr1.bcd = 3; // BCLK divisor is 3+1=4 + gcr1.bcs = 1; // delay from ~CS to BCLK is 1 cycle + gcr1.dsz = 1; // 16 bits per databeat at DATA[15:0] + gcr1.sp = 0; // supervisor protection is disabled + gcr1.csrec = 1; // ~CS recovery is 1 cycle + gcr1.aus = 1; // address is not shifted + gcr1.gbc = 1; // ~CS gap is 1 cycle + gcr1.wp = 0; // write protection is not enabled + //gcr1.psz = x; // don't care, page mode is not used + + gcr2.adh = 0; // address hold duration is 1 cycle + //gcr2.daps = x; // don't care, DTACK is not used + gcr2.dae = 0; // DTACK is not used + //gcr2.dap = x; // don't care, DTACK is not used + gcr2.mux16_byp_grant= 1; // enable grant mechanism + gcr2.reserved_3_2 = 0; // must be 0 + gcr2.reserved_11_10 = 0; // must be 0 + gcr2.reserved_31_13 = 0; // must be 0 + + //rcr1.rcsn = x; // don't care in sync mode + rcr1.rcsa = 0; // no delay for ~CS needed + //rcr1.oen = x; // don't care in sync mode + rcr1.oea = 0; // no delay for ~OE needed + rcr1.radvn = 0; // no delay for ~LBA needed + rcr1.ral = 0; // clear ~LBA when needed + rcr1.radva = 0; // no delay for ~LBA needed + rcr1.rwsc = 1; // one wait state + rcr1.reserved_3 = 0; // must be 0 + rcr1.reserved_7 = 0; // must be 0 + rcr1.reserved_11 = 0; // must be 0 + rcr1.reserved_15 = 0; // must be 0 + rcr1.reserved_23 = 0; // must be 0 + rcr1.reserved_31_30 = 0; // must be 0 + + //rcr2.rben = x; // don't care in sync mode + rcr2.rbe = 0; // BE is disabled + //rcr2.rbea = x; // don't care when BE is not used + rcr2.rl = 0; // read latency is 0 + //rcr2.pat = x; // don't care when page read is not used + rcr2.apr = 0; // page read mode is not used + rcr2.reserved_7 = 0; // must be 0 + rcr2.reserved_11_10 = 0; // must be 0 + rcr2.reserved_31_16 = 0; // must be 0 + + //wcr1.wcsn = x; // don't care in sync mode + wcr1.wcsa = 0; // no delay for ~CS needed + //wcr1.wen = x; // don't care in sync mode + wcr1.wea = 0; // no delay for ~WR_N needed + //wcr1.wben = x; // don't care in sync mode + //wcr1.wbea = x; // don't care in sync mode + wcr1.wadvn = 0; // no delay for ~LBA needed + wcr1.wadva = 0; // no delay for ~LBA needed + wcr1.wwsc = 1; // no wait state in needed + wcr1.wbed = 1; // BE is disabled + wcr1.wal = 0; // clear ~LBA when needed + + wcr2.wbcdd = 0; // write clock division is not needed + wcr2.reserved_31_1 = 0; // must be 0 + + wcr.bcm = 0; // clock is only active during access + //wcr.gbcd = x; // don't care when BCM=0 + wcr.inten = 0; // interrupt is not used + //wcr.intpol = x; // don't care when interrupt is not used + wcr.wdog_en = 1; // watchdog is enabled + wcr.wdog_limit = 00; // timeout is 128 BCLK cycles + wcr.reserved_3 = 0; // must be 0 + wcr.reserved_7_6 = 0; // must be 0 + wcr.reserved_31_11 = 0; // must be 0 + + wiar.ips_req = 0; // IPS not needed + wiar.ips_ack = 0; // IPS not needed + //wiar.irq = x; // don't touch + //wiar.errst = x; // don't touch + wiar.aclk_en = 1; // clock is enabled + wiar.reserved_31_5 = 0; // must be 0 + + //ear.error_addr = x; // read-only + + // write modified registers + eim_write_32(EIM_CS0GCR1, (uint32_t *)&gcr1); + eim_write_32(EIM_CS0GCR2, (uint32_t *)&gcr2); + eim_write_32(EIM_CS0RCR1, (uint32_t *)&rcr1); + eim_write_32(EIM_CS0RCR2, (uint32_t *)&rcr2); + eim_write_32(EIM_CS0WCR1, (uint32_t *)&wcr1); + eim_write_32(EIM_CS0WCR2, (uint32_t *)&wcr2); + eim_write_32(EIM_WCR, (uint32_t *)&wcr); + eim_write_32(EIM_WIAR, (uint32_t *)&wiar); +/* eim_write_32(EIM_EAR, (uint32_t *)&ear);*/ +} + + +//------------------------------------------------------------------------------ +// Write a 32-bit word to EIM. +// If EIM is not set up correctly, this will abort with a bus error. +//------------------------------------------------------------------------------ +void eim_write_32(off_t offset, uint32_t *pvalue) +{ + // calculate memory offset + uint32_t *ptr = (uint32_t *)_eim_calc_offset(offset); + + // write data to memory + memcpy(ptr, pvalue, sizeof(uint32_t)); +} + +//------------------------------------------------------------------------------ +// Read a 32-bit word from EIM. +// If EIM is not set up correctly, this will abort with a bus error. +//------------------------------------------------------------------------------ +void eim_read_32(off_t offset, uint32_t *pvalue) +{ + // calculate memory offset + uint32_t *ptr = (uint32_t *)_eim_calc_offset(offset); + + // read data from memory + memcpy(pvalue, ptr, sizeof(uint32_t)); +} + + +//------------------------------------------------------------------------------ +// Calculate an offset into the currently-mapped EIM page. +//------------------------------------------------------------------------------ +static off_t _eim_calc_offset(off_t offset) +{ + // make sure that memory is mapped + if (mem_map_ptr == MAP_FAILED) + _eim_remap_mem(offset); + + // calculate starting and ending addresses of currently mapped page + off_t offset_low = mem_base_addr; + off_t offset_high = mem_base_addr + (mem_page_size - 1); + + // check that offset is in currently mapped page, remap new page otherwise + if ((offset < offset_low) || (offset > offset_high)) + _eim_remap_mem(offset); + + // calculate pointer + return (off_t)mem_map_ptr + (offset - mem_base_addr); +} + + +//------------------------------------------------------------------------------ +// Map in a new EIM page. +//------------------------------------------------------------------------------ +static void _eim_remap_mem(off_t offset) +{ + // unmap old memory page if needed + if (mem_map_ptr != MAP_FAILED) { + if (munmap(mem_map_ptr, mem_page_size) != 0) { + fprintf(stderr, "ERROR: munmap() failed.\n"); + exit(EXIT_FAILURE); + } + } + + // calculate starting address of new page + while (offset % mem_page_size) + offset--; + + // try to map new memory page + mem_map_ptr = mmap(NULL, mem_page_size, PROT_READ | PROT_WRITE, MAP_SHARED, + mem_dev_fd, offset); + if (mem_map_ptr == MAP_FAILED) { + fprintf(stderr, "ERROR: mmap() failed.\n"); + exit(EXIT_FAILURE); + } + + // save last mapped page address + mem_base_addr = offset; +} + + +//------------------------------------------------------------------------------ +// End-of-File +//------------------------------------------------------------------------------ diff --git a/novena-eim.h b/novena-eim.h new file mode 100644 index 0000000..dcceaf4 --- /dev/null +++ b/novena-eim.h @@ -0,0 +1,53 @@ +/* + * novena-eim.h + * ------------ + * This module contains the userland magic to set up and use the EIM bus. + * + * + * Author: Pavel Shatov + * Copyright (c) 2014-2015, NORDUnet A/S All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * - Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * - Neither the name of the NORDUnet nor the names of its contributors may + * be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS + * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A + * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include +#define EIM_BASE_ADDR 0x08000000 + +/* Set up EIM bus. + * Returns 0 on success, -1 on failure. + */ +int eim_setup(void); + +/* Write a 32-bit word to EIM. + * If EIM is not set up correctly, this will abort with a bus error. + */ +void eim_write_32(off_t, uint32_t *); + +/* Read a 32-bit word from EIM. + * If EIM is not set up correctly, this will abort with a bus error. + */ +void eim_read_32(off_t, uint32_t *); -- cgit v1.2.3