diff options
author | Rob Austein <sra@hactrn.net> | 2015-07-05 15:47:04 -0400 |
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committer | Rob Austein <sra@hactrn.net> | 2015-07-05 15:47:04 -0400 |
commit | 65f663450cfadb06b33166092aecae705a20e9bc (patch) | |
tree | 6f67dbc2165e8ddda36ef82db8a67b0a603cf021 /utils | |
parent | e80f25d31235628f2d9cfb410d48bcc83b4487d5 (diff) |
Get rid of autoconf, as we don't really need it. Add eim_peek_poke
utility program, based on Paul's example in the core/platform/novena
repository.
Diffstat (limited to 'utils')
-rw-r--r-- | utils/GNUmakefile | 43 | ||||
-rw-r--r-- | utils/eim_peek_poke.c | 121 |
2 files changed, 164 insertions, 0 deletions
diff --git a/utils/GNUmakefile b/utils/GNUmakefile new file mode 100644 index 0000000..8ebebf1 --- /dev/null +++ b/utils/GNUmakefile @@ -0,0 +1,43 @@ +# Copyright (c) 2015, SUNET +# +# Redistribution and use in source and binary forms, with or +# without modification, are permitted provided that the following +# conditions are met: +# +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# +# 2. 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. +# +# 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 OWNER 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. + +INC = ../hal.h +LIB = ../libhal.a +BIN = eim_peek_poke + +CFLAGS = -g3 -Wall -fPIC -std=c99 -I.. + +all: ${BIN} + +clean: + rm -f *.o ${BIN} + +${BIN}: %: %.o ${LIB} + ${CC} ${CFLAGS} -o $@ $^ ${LDFLAGS} + +%.o: %.c ${INC} + ${CC} ${CFLAGS} -c -o $@ $< diff --git a/utils/eim_peek_poke.c b/utils/eim_peek_poke.c new file mode 100644 index 0000000..9a8143c --- /dev/null +++ b/utils/eim_peek_poke.c @@ -0,0 +1,121 @@ +/* + * eim_peek_poke.c + * --------------- + * Read or write a 32-bit word via the EIM bus. This is mostly + * intended for use as part of the FPGA initialization sequence. + * + * Authors: Paul Selkirk, Rob Austein + * Copyright (c) 2015, SUNET + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. 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. + * + * 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 OWNER 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 <stdio.h> +#include <stdlib.h> +#include <stdarg.h> +#include <string.h> + +#include "novena-eim.h" + +static int string_match(const char *s1, ...) +{ + const char *s2; + + if (s1 == NULL) + return 0; + + va_list ap; + va_start(ap, s1); + for (s2 = va_arg(ap, const char *); s2 != NULL; s2 = va_arg(ap, const char *)) + if (!strcmp(s1, s2)) + break; + va_end(ap); + + return s2 != NULL; +} + +static int parse_value(const char *s, uint32_t *value) +{ + if (s == NULL || value == NULL) + return 0; + + char *e; + *value = strtoul(s, &e, 0); + + return *s != '\0' && *e == '\0'; +} + +static int parse_offset(const char *s, off_t *offset) +{ + uint32_t value; + + if (offset == NULL || !parse_value(s, &value)) + return 0; + + *offset = (off_t) value; + return 1; +} + +static void usage(const int code, const char *jane) +{ + FILE *f = code ? stderr : stdout; + fprintf(f, "usage: %s { --read offset | --write offset value }\n", jane); + exit(code); +} + +int main(int argc, char *argv[]) +{ + off_t offset = 0; + uint32_t value; + + if (argc == 1 || string_match(argv[1], "-?", "-h", "--help")) + usage(EXIT_SUCCESS, argv[0]); + + if (eim_setup() != 0) { + fprintf(stderr, "EIM setup failed\n"); + return EXIT_FAILURE; + } + + if (string_match(argv[1], "r", "-r", "--read", "--peek")) { + if (argc != 3 || !parse_offset(argv[2], &offset)) + usage(EXIT_FAILURE, argv[0]); + eim_read_32(offset, &value); + printf("%08x\n", value); + } + + else if (string_match(argv[1], "w", "-w", "--write", "--poke")) { + if (argc != 4 || !parse_offset(argv[2], &offset) || !parse_value(argv[3], &value)) + usage(EXIT_FAILURE, argv[0]); + eim_write_32(offset, &value); + exit(EXIT_SUCCESS); + } + + else { + usage(EXIT_FAILURE, argv[0]); + } + + return EXIT_SUCCESS; +} |