276 lines
7.2 KiB
C++
276 lines
7.2 KiB
C++
/*
|
|
* Copyright (C) 2008 The Android Open Source Project
|
|
* 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.
|
|
*
|
|
* 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 OWNER 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.
|
|
*/
|
|
|
|
#define round_down(a, b) \
|
|
({ typeof(a) _a = (a); typeof(b) _b = (b); _a - (_a % _b); })
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
|
|
#include <algorithm>
|
|
|
|
#include <sparse/sparse.h>
|
|
|
|
#include "fastboot.h"
|
|
|
|
static char ERROR[128];
|
|
|
|
char *fb_get_error(void)
|
|
{
|
|
return ERROR;
|
|
}
|
|
|
|
static int check_response(usb_handle* usb, uint32_t size, char* response) {
|
|
char status[65];
|
|
|
|
while (true) {
|
|
int r = usb_read(usb, status, 64);
|
|
if (r < 0) {
|
|
sprintf(ERROR, "status read failed (%s)", strerror(errno));
|
|
usb_close(usb);
|
|
return -1;
|
|
}
|
|
status[r] = 0;
|
|
|
|
if (r < 4) {
|
|
sprintf(ERROR, "status malformed (%d bytes)", r);
|
|
usb_close(usb);
|
|
return -1;
|
|
}
|
|
|
|
if (!memcmp(status, "INFO", 4)) {
|
|
fprintf(stderr,"(bootloader) %s\n", status + 4);
|
|
continue;
|
|
}
|
|
|
|
if (!memcmp(status, "OKAY", 4)) {
|
|
if (response) {
|
|
strcpy(response, (char*) status + 4);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
if (!memcmp(status, "FAIL", 4)) {
|
|
if (r > 4) {
|
|
sprintf(ERROR, "remote: %s", status + 4);
|
|
} else {
|
|
strcpy(ERROR, "remote failure");
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
if (!memcmp(status, "DATA", 4) && size > 0){
|
|
uint32_t dsize = strtol(status + 4, 0, 16);
|
|
if (dsize > size) {
|
|
strcpy(ERROR, "data size too large");
|
|
usb_close(usb);
|
|
return -1;
|
|
}
|
|
return dsize;
|
|
}
|
|
|
|
strcpy(ERROR,"unknown status code");
|
|
usb_close(usb);
|
|
break;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
static int _command_start(usb_handle* usb, const char* cmd, uint32_t size, char* response) {
|
|
size_t cmdsize = strlen(cmd);
|
|
if (cmdsize > 64) {
|
|
sprintf(ERROR, "command too large");
|
|
return -1;
|
|
}
|
|
|
|
if (response) {
|
|
response[0] = 0;
|
|
}
|
|
|
|
if (usb_write(usb, cmd, cmdsize) != static_cast<int>(cmdsize)) {
|
|
sprintf(ERROR, "command write failed (%s)", strerror(errno));
|
|
usb_close(usb);
|
|
return -1;
|
|
}
|
|
|
|
return check_response(usb, size, response);
|
|
}
|
|
|
|
static int _command_data(usb_handle* usb, const void* data, uint32_t size) {
|
|
int r = usb_write(usb, data, size);
|
|
if (r < 0) {
|
|
sprintf(ERROR, "data transfer failure (%s)", strerror(errno));
|
|
usb_close(usb);
|
|
return -1;
|
|
}
|
|
if (r != ((int) size)) {
|
|
sprintf(ERROR, "data transfer failure (short transfer)");
|
|
usb_close(usb);
|
|
return -1;
|
|
}
|
|
return r;
|
|
}
|
|
|
|
static int _command_end(usb_handle* usb) {
|
|
return check_response(usb, 0, 0) < 0 ? -1 : 0;
|
|
}
|
|
|
|
static int _command_send(usb_handle* usb, const char* cmd, const void* data, uint32_t size,
|
|
char* response) {
|
|
if (size == 0) {
|
|
return -1;
|
|
}
|
|
|
|
int r = _command_start(usb, cmd, size, response);
|
|
if (r < 0) {
|
|
return -1;
|
|
}
|
|
|
|
r = _command_data(usb, data, size);
|
|
if (r < 0) {
|
|
return -1;
|
|
}
|
|
|
|
r = _command_end(usb);
|
|
if (r < 0) {
|
|
return -1;
|
|
}
|
|
|
|
return size;
|
|
}
|
|
|
|
static int _command_send_no_data(usb_handle* usb, const char* cmd, char* response) {
|
|
return _command_start(usb, cmd, 0, response);
|
|
}
|
|
|
|
int fb_command(usb_handle* usb, const char* cmd) {
|
|
return _command_send_no_data(usb, cmd, 0);
|
|
}
|
|
|
|
int fb_command_response(usb_handle* usb, const char* cmd, char* response) {
|
|
return _command_send_no_data(usb, cmd, response);
|
|
}
|
|
|
|
int fb_download_data(usb_handle* usb, const void* data, uint32_t size) {
|
|
char cmd[64];
|
|
sprintf(cmd, "download:%08x", size);
|
|
return _command_send(usb, cmd, data, size, 0) < 0 ? -1 : 0;
|
|
}
|
|
|
|
#define USB_BUF_SIZE 1024
|
|
static char usb_buf[USB_BUF_SIZE];
|
|
static int usb_buf_len;
|
|
|
|
static int fb_download_data_sparse_write(void *priv, const void *data, int len)
|
|
{
|
|
int r;
|
|
usb_handle* usb = reinterpret_cast<usb_handle*>(priv);
|
|
int to_write;
|
|
const char* ptr = reinterpret_cast<const char*>(data);
|
|
|
|
if (usb_buf_len) {
|
|
to_write = std::min(USB_BUF_SIZE - usb_buf_len, len);
|
|
|
|
memcpy(usb_buf + usb_buf_len, ptr, to_write);
|
|
usb_buf_len += to_write;
|
|
ptr += to_write;
|
|
len -= to_write;
|
|
}
|
|
|
|
if (usb_buf_len == USB_BUF_SIZE) {
|
|
r = _command_data(usb, usb_buf, USB_BUF_SIZE);
|
|
if (r != USB_BUF_SIZE) {
|
|
return -1;
|
|
}
|
|
usb_buf_len = 0;
|
|
}
|
|
|
|
if (len > USB_BUF_SIZE) {
|
|
if (usb_buf_len > 0) {
|
|
sprintf(ERROR, "internal error: usb_buf not empty\n");
|
|
return -1;
|
|
}
|
|
to_write = round_down(len, USB_BUF_SIZE);
|
|
r = _command_data(usb, ptr, to_write);
|
|
if (r != to_write) {
|
|
return -1;
|
|
}
|
|
ptr += to_write;
|
|
len -= to_write;
|
|
}
|
|
|
|
if (len > 0) {
|
|
if (len > USB_BUF_SIZE) {
|
|
sprintf(ERROR, "internal error: too much left for usb_buf\n");
|
|
return -1;
|
|
}
|
|
memcpy(usb_buf, ptr, len);
|
|
usb_buf_len = len;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int fb_download_data_sparse_flush(usb_handle* usb) {
|
|
if (usb_buf_len > 0) {
|
|
if (_command_data(usb, usb_buf, usb_buf_len) != usb_buf_len) {
|
|
return -1;
|
|
}
|
|
usb_buf_len = 0;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int fb_download_data_sparse(usb_handle* usb, struct sparse_file* s) {
|
|
int size = sparse_file_len(s, true, false);
|
|
if (size <= 0) {
|
|
return -1;
|
|
}
|
|
|
|
char cmd[64];
|
|
sprintf(cmd, "download:%08x", size);
|
|
int r = _command_start(usb, cmd, size, 0);
|
|
if (r < 0) {
|
|
return -1;
|
|
}
|
|
|
|
r = sparse_file_callback(s, true, false, fb_download_data_sparse_write, usb);
|
|
if (r < 0) {
|
|
return -1;
|
|
}
|
|
|
|
r = fb_download_data_sparse_flush(usb);
|
|
if (r < 0) {
|
|
return -1;
|
|
}
|
|
|
|
return _command_end(usb);
|
|
}
|