diff options
Diffstat (limited to 'src/download.c')
| -rw-r--r-- | src/download.c | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/src/download.c b/src/download.c new file mode 100644 index 0000000..741e2e5 --- /dev/null +++ b/src/download.c @@ -0,0 +1,224 @@ +/* + * 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 <string.h> +#include <endian.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, unsigned char 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, unsigned int address, unsigned int 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, unsigned int address, unsigned int 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, unsigned int 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, unsigned int address, unsigned int 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, unsigned int address, unsigned int 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; +} |