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/*
* Copyright (C) 2016 Paul Kocialkowski <contact@paulk.fr>
*
* 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 3 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 <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <endian.h>
#include <sys/types.h>
#include "lg-downloader.h"
#include "hdlc.h"
#include "usb.h"
#include "download.h"
static int download_response_check(struct download_response *response)
{
if (response == NULL)
return -1;
if (response->ack != DOWNLOAD_ACK)
return -1;
return 0;
}
static int download_response(struct context *context)
{
struct download_response response;
int rc;
rc = hdlc_recv(context, &response, sizeof(response));
if (rc < 0)
return -1;
rc = download_response_check(&response);
if (rc < 0)
return -1;
return 0;
}
static int download_request(struct context *context, uint8_t command)
{
struct download_request request;
int rc;
memset(&request, 0, sizeof(request));
request.command = command;
rc = hdlc_send(context, &request, sizeof(request));
if (rc < 0)
return -1;
return 0;
}
int download_start_flash_write(struct context *context)
{
int rc;
rc = download_request(context, DOWNLOAD_START_FLASH_WRITE);
if (rc < 0)
return -1;
rc = download_response(context);
if (rc < 0)
return -1;
return 0;
}
int download_write(struct context *context, void *buffer, off_t address, size_t length)
{
struct download_write_request request;
struct download_response response;
int rc;
memset(&request, 0, sizeof(request));
request.command = DOWNLOAD_WRITE;
request.address = htole32(address);
request.length = htole32(length);
rc = hdlc_send(context, &request, sizeof(request));
if (rc < 0)
return -1;
rc = usb_send(context, buffer, length);
if (rc < 0)
return -1;
rc = hdlc_recv(context, &response, sizeof(response));
if (rc < 0)
return -1;
if (response.ack != DOWNLOAD_WRITE)
return -1;
return 0;
}
int download_erase(struct context *context, off_t address, size_t length)
{
struct download_erase_request request;
int rc;
memset(&request, 0, sizeof(request));
request.command = DOWNLOAD_ERASE;
request.address = htole32(address);
request.length = htole32(length);
rc = hdlc_send(context, &request, sizeof(request));
if (rc < 0)
return -1;
rc = download_response(context);
if (rc < 0)
return -1;
return 0;
}
int download_read(struct context *context, void *buffer, size_t length)
{
struct download_read_request request;
int rc;
memset(&request, 0, sizeof(request));
request.command = DOWNLOAD_READ;
request.length = htole32(length);
rc = hdlc_send(context, &request, sizeof(request));
if (rc < 0)
return -1;
rc = usb_recv(context, buffer, length);
if (rc < 0)
return -1;
return 0;
}
int download_initialize_partition(struct context *context, off_t address, size_t length)
{
struct download_initialize_partition_request request;
int rc;
memset(&request, 0, sizeof(request));
request.command = DOWNLOAD_INITIALIZE_PARTITION;
request.address = htole32(address);
request.length = htole32(length);
rc = hdlc_send(context, &request, sizeof(request));
if (rc < 0)
return -1;
rc = download_response(context);
if (rc < 0)
return -1;
return 0;
}
int download_ready_read(struct context *context, off_t address, size_t length)
{
struct download_ready_read_request request;
int rc;
memset(&request, 0, sizeof(request));
request.command = DOWNLOAD_READY_READ;
request.address = htole32(address);
request.length = htole32(length);
rc = hdlc_send(context, &request, sizeof(request));
if (rc < 0)
return -1;
rc = download_response(context);
if (rc < 0)
return -1;
return 0;
}
int download_reset(struct context *context)
{
int rc;
rc = download_request(context, DOWNLOAD_RESET);
if (rc < 0)
return -1;
rc = download_response(context);
if (rc < 0)
return -1;
return 0;
}
int download_notify_start_dl(struct context *context)
{
int rc;
rc = download_request(context, DOWNLOAD_NOTIFY_START_DL);
if (rc < 0)
return -1;
rc = download_response(context);
if (rc < 0)
return -1;
return 0;
}
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