diff options
Diffstat (limited to 'firmware/src/simtrace')
| -rw-r--r-- | firmware/src/simtrace/prod_info.c | 100 | ||||
| -rw-r--r-- | firmware/src/simtrace/prod_info.h | 12 |
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 *) π + 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 |