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authorHarald Welte <laforge@gnumonks.org>2013-11-17 20:12:58 +0100
committerHarald Welte <laforge@gnumonks.org>2013-11-17 20:12:58 +0100
commit54c248f97ac275469b667e2b17dedcaf013b8741 (patch)
treeca7d8fff10d252d8c2e5d7f0aefaeb2d3bdb3958
parent1e8df4869c05c75d6b094c3f324825be4f6aff19 (diff)
simtrace: Add OTP data containing production data
-rw-r--r--firmware/src/simtrace/prod_info.c100
-rw-r--r--firmware/src/simtrace/prod_info.h12
2 files changed, 112 insertions, 0 deletions
diff --git a/firmware/src/simtrace/prod_info.c b/firmware/src/simtrace/prod_info.c
new file mode 100644
index 0000000..87ef6e2
--- /dev/null
+++ b/firmware/src/simtrace/prod_info.c
@@ -0,0 +1,100 @@
+/* Maintainance of production information in SPI flash
+ * (C) 2013 by Harald Welte <laforge@gnumonks.org>
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <errno.h>
+#include <string.h>
+#include <sys/types.h>
+#include <AT91SAM7.h>
+#include <lib_AT91SAM7.h>
+#include <openpcd.h>
+
+#include <os/dbgu.h>
+
+#include "spi_flash.h"
+#include "prod_info.h"
+
+#include "../simtrace.h"
+
+#define OTP_REGION_PRODINFO 1
+
+#define PRODINFO_MAGIC 0x51075ACE
+
+struct simtrace_prod_info
+{
+ /* magic value */
+ u_int32_t magic;
+ /* unix timestamp of production date (0=unknown) */
+ u_int32_t production_ts;
+ /* hardware version */
+ u_int32_t version;
+ /* re-works applied */
+ u_int32_t reworks;
+} __attribute__((packed));
+
+
+int prod_info_write(u_int32_t ts, u_int32_t version, u_int32_t reworks)
+{
+ struct simtrace_prod_info pi = {
+ .magic = PRODINFO_MAGIC,
+ .production_ts = ts,
+ .version = version,
+ .reworks = reworks,
+ };
+ u_int8_t *pi8 = (u_int8_t *) &pi;
+ u_int32_t addr = OTP_ADDR(OTP_REGION_PRODINFO);
+ unsigned int rc;
+ int i;
+
+ spiflash_write_protect(0);
+
+ for (i = 0; i < sizeof(pi); i++) {
+ DEBUGPCR("0x%02x writing 0x%0x", addr+i, pi8[i]);
+ spiflash_write_enable(1);
+ rc = spiflash_otp_write(addr+i, pi8[i]);
+ if (rc < 0)
+ break;
+
+ do { } while (spiflash_read_status() & 1);
+ }
+
+ spiflash_otp_set_lock(OTP_REGION_PRODINFO);
+
+ spiflash_write_protect(1);
+
+ return rc;
+}
+
+int prod_info_get(u_int32_t *ver, u_int32_t *reworks)
+{
+ struct simtrace_prod_info pi;
+ u_int32_t addr = OTP_ADDR(OTP_REGION_PRODINFO);
+
+ spiflash_otp_read(addr, (u_int8_t *) &pi, sizeof(pi));
+
+ if (pi.magic != PRODINFO_MAGIC)
+ return -1;
+
+ if (ver)
+ *ver = pi.version;
+
+ if (reworks)
+ *reworks = pi.reworks;
+
+ return 0;
+}
diff --git a/firmware/src/simtrace/prod_info.h b/firmware/src/simtrace/prod_info.h
new file mode 100644
index 0000000..7a12421
--- /dev/null
+++ b/firmware/src/simtrace/prod_info.h
@@ -0,0 +1,12 @@
+#ifndef _PROD_INFO_H
+#define _PROD_INFO_H
+
+#define SIMTRACE_VER(a, b, c) (((a & 0xff) << 16) | \
+ ((b & 0xff) << 8) | \
+ ((c & 0xff) << 0))
+
+
+int prod_info_write(u_int32_t ts, u_int32_t version, u_int32_t reworks);
+int prod_info_get(u_int32_t *ver, u_int32_t *reworks);
+
+#endif