sw/stm32 - Cryptech HSM on STM-32 ARM processor

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author	Paul Selkirk <paul@psgd.org>	2017-05-01 15:38:16 -0400
committer	Paul Selkirk <paul@psgd.org>	2017-05-01 15:38:16 -0400
commit	1ac75ba3d15f9b22966accbe6bd9793953396fc5 (patch)
tree	89c2da9cd7bbe9b89a07c7370e22ad9414b23f58 /projects/libhal-test/gettimeofday.c
parent	09b4960576a64647e27df25cd6b27e7f62ccc50c (diff)

Add HAL_Delay as an alias for task_delay, but don't wedge if the tasker isn't running yet.

Diffstat (limited to 'projects/libhal-test/gettimeofday.c')

0 files changed, 0 insertions, 0 deletions

/* * 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 <stdio.h> #include <stdlib.h> #include <fcntl.h> #include <unistd.h> #include <sys/ioctl.h> #include <stdint.h> #include <arpa/inet.h> #include "novena-eim.h" #include "cryptech.h" static int debug = 0; static int inited = 0; #ifndef EIM_IO_TIMEOUT #define EIM_IO_TIMEOUT 100000000 #endif static hal_error_t init(void) { if (inited) return HAL_OK; if (eim_setup() != 0) return HAL_ERROR_IO_SETUP_FAILED; inited = 1; return HAL_OK; } /* 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); } void hal_io_set_debug(int onoff) { debug = onoff; } static void dump(char *label, const uint8_t *buf, size_t len) { if (debug) { size_t i; printf("%s [", label); for (i = 0; i < len; ++i) printf(" %02x", buf[i]); printf(" ]\n"); } } hal_error_t hal_io_write(off_t offset, const uint8_t *buf, size_t len) { hal_error_t err; if (len % 4 != 0) return HAL_ERROR_IO_BAD_COUNT; if ((err = init()) != HAL_OK) return err; 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 HAL_OK; } hal_error_t hal_io_read(off_t offset, uint8_t *buf, size_t len) { uint8_t *rbuf = buf; int rlen = len; hal_error_t err; if (len % 4 != 0) return HAL_ERROR_IO_BAD_COUNT; if ((err = init()) != HAL_OK) return err; 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 HAL_OK; } hal_error_t hal_io_expected(off_t offset, const uint8_t *expected, size_t len) { hal_error_t err; uint8_t buf[4]; size_t i; if (len % 4 != 0) return HAL_ERROR_IO_BAD_COUNT; dump("expect", expected, len); for (i = 0; i < len; i++) { if ((i & 3) == 0 && (err = hal_io_read(offset + i/4, buf, sizeof(buf))) != HAL_OK) return err; if (buf[i & 3] != expected[i]) return HAL_ERROR_IO_UNEXPECTED; } return HAL_OK; } hal_error_t hal_io_init(off_t offset) { uint8_t buf[4] = { 0, 0, 0, CTRL_INIT }; return hal_io_write(offset, buf, sizeof(buf)); } hal_error_t hal_io_next(off_t offset) { uint8_t buf[4] = { 0, 0, 0, CTRL_NEXT }; return hal_io_write(offset, buf, sizeof(buf)); } hal_error_t hal_io_wait(off_t offset, uint8_t status, int *count) { hal_error_t err; uint8_t buf[4]; int i; for (i = 1; ; ++i) { if (count && (*count > 0) && (i >= *count)) return HAL_ERROR_IO_TIMEOUT; if ((err = hal_io_read(offset, buf, sizeof(buf))) != HAL_OK) return err; if ((buf[3] & status) != 0) { if (count) *count = i; return HAL_OK; } } } hal_error_t hal_io_wait_ready(off_t offset) { int limit = EIM_IO_TIMEOUT; return hal_io_wait(offset, STATUS_READY, &limit); } hal_error_t hal_io_wait_valid(off_t offset) { int limit = EIM_IO_TIMEOUT; return hal_io_wait(offset, STATUS_VALID, &limit); } /* * Local variables: * indent-tabs-mode: nil * End: */


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