Unify eim and i2c memory map, unify apps, build libraries.

1 files changed, 158 insertions, 0 deletions

diff --git a/sw/trng_extractor.c b/sw/trng_extractor.c
new file mode 100644
index 0000000..f71a5d6
--- /dev/null
+++ b/sw/trng_extractor.c
@@ -0,0 +1,158 @@
+/*
+ * trng_extractor.c
+ * ----------------
+ * This program extracts raw data from the avalanche_entropy, rosc_entropy,
+ * and csprng cores.
+ *
+ * Author: 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.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdint.h>
+#include <ctype.h>
+
+#include "cryptech.h"
+
+char *usage = 
+"%s [-a|r|c] [-n #] [-o file]\n\
+\n\
+-a      avalanche entropy\n\
+-r      rosc entropy\n\
+-c      csprng (default data source)\n\
+-n      number of 4-byte samples (scale with K, M, or G suffix)\n\
+-o      output file (defaults to stdout)\n\
+";
+
+/* extract one data sample */
+static int extract(off_t status_addr, off_t data_addr, uint32_t *data)
+{
+    if (tc_wait(status_addr, ENTROPY1_STATUS_VALID, NULL) != 0) {
+        fprintf(stderr, "tc_wait failed\n");
+        return 1;
+    }
+
+    if (tc_read(data_addr, (uint8_t *)data, 4) != 0) {
+        fprintf(stderr, "tc_read failed\n");
+        return 1;
+    }
+
+    return 0;
+}
+
+/* main */
+int main(int argc, char *argv[])
+{
+    int i, opt;
+    unsigned long num_words = 1;
+    char *endptr;
+    off_t status_addr = CSPRNG_ADDR_STATUS;
+    off_t data_addr = CSPRNG_ADDR_RANDOM;
+    FILE *output = stdout;
+    uint32_t data;
+
+    /* parse command line */
+    while ((opt = getopt(argc, argv, "h?arcn:o:")) != -1) {
+        switch (opt) {
+        case 'h':
+        case '?':
+            printf(usage, argv[0]);
+            return EXIT_SUCCESS;
+        case 'a':
+            status_addr = ENTROPY1_ADDR_STATUS;
+            data_addr = ENTROPY1_ADDR_ENTROPY;
+            break;
+        case 'r':
+            status_addr = ENTROPY2_ADDR_STATUS;
+            data_addr = ENTROPY2_ADDR_ENTROPY;
+            break;
+        case 'c':
+            status_addr = CSPRNG_ADDR_STATUS;
+            data_addr = CSPRNG_ADDR_RANDOM;
+            break;
+        case 'n':
+	    num_words = strtoul(optarg, &endptr, 10);
+	    switch (toupper(*endptr)) {
+	    case '\0':
+		break;
+	    case 'K':
+		num_words *= 1000;
+		break;
+	    case 'M':
+		num_words *= 1000000;
+		break;
+	    case 'G':
+		num_words *= 1000000000;
+		break;
+	    default:
+		fprintf(stderr, "unsupported -n suffix %s\n", endptr);
+		return EXIT_FAILURE;
+	    }
+            break;
+        case 'o':
+            output = fopen(optarg, "wb+");
+            if (output == NULL) {
+                fprintf(stderr, "error opening output file %s: ", optarg);
+                perror("");
+                return EXIT_FAILURE;
+            }
+            break;
+        default:
+        errout:
+            fprintf(stderr, usage, argv[0]);
+            return EXIT_FAILURE;
+        }
+    }
+    if (optind < argc) {
+        fprintf(stderr, "%s: invalid argument%s --",
+                argv[0], argc - optind > 1 ? "s" : "");
+        do {
+            fprintf(stderr, " %s", argv[optind]);
+            ++optind;
+        } while (optind < argc);
+        fprintf(stderr, "\n");
+        goto errout;
+    }
+
+    /* get the data */
+    for (i = 0; i < num_words; ++i) {
+        if (extract(status_addr, data_addr, &data) != 0)
+            return EXIT_FAILURE;
+        if (fwrite(&data, sizeof(data), 1, output) != 1) {
+            perror("fwrite");
+            fclose(output);
+            return EXIT_FAILURE;
+        }
+    }
+
+    fclose(output);
+    return EXIT_SUCCESS;
+}