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/*
* XMM6260 Firmware loader functions
* Copyright (C) 2012 Alexander Tarasikov <alexander.tarasikov@gmail.com>
* Copyright (C) 2012 Paul Kocialkowski <contact@paulk.fr>
*
* based on the incomplete C++ implementation which is
* Copyright (C) 2012 Sergey Gridasov <grindars@gmail.com>
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
#include <getopt.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/ioctl.h>
//for timeval
#include <sys/time.h>
//for mmap
#include <sys/mman.h>
#include <sys/stat.h>
#include "ipc_private.h"
#include "xmm6260_loader.h"
#include "xmm6260_modemctl.h"
#include "modem_prj.h"
unsigned char xmm6260_crc_calculate(void* data, size_t offset, size_t length)
{
unsigned char crc = 0;
unsigned char *ptr = (unsigned char*)(data + offset);
while (length--) {
crc ^= *ptr++;
}
return crc;
}
/*
* io helper functions
*/
int expect(int fd, unsigned timeout) {
int ret = 0;
struct timeval tv = {
tv.tv_sec = timeout / 1000,
tv.tv_usec = 1000 * (timeout % 1000),
};
fd_set read_set;
FD_ZERO(&read_set);
FD_SET(fd, &read_set);
ret = select(fd + 1, &read_set, 0, 0, &tv);
if (ret < 0) {
// _e("failed to select the fd %d ret=%d: %s", fd, ret, strerror(errno));
goto fail;
}
if (ret < 1 || !FD_ISSET(fd, &read_set)) {
// _d("fd %d not in fd set", fd);
goto fail;
}
fail:
return ret;
}
int expect_read(int fd, void *buf, size_t size) {
int ret;
if ((ret = expect(fd, DEFAULT_TIMEOUT)) < 1) {
// _e("failed to select the fd %d", fd);
return ret;
}
return read(fd, buf, size);
}
int expect_data(int fd, void *data, size_t size) {
int ret;
char buf[size];
if ((ret = expect_read(fd, buf, size)) != size) {
ret = -1;
// _e("failed to receive data");
return ret;
}
ret = memcmp(buf, data, size);
return ret;
}
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