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foxbox/utils/hwstub/tools/hwstub_load.cpp
Amaury Pouly f4091be1d3 hwstub: small fixes to argument processing and usage() 
Change-Id: I3daa5e0c3fa2e7eab6a3d75b4c8aa66254d72f3c
2017-01-24 15:34:05 +01:00

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9.4 KiB
C++
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2013 by Amaury Pouly
*
* 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <getopt.h>
#include <stdbool.h>
#include <ctype.h>
#include <iostream>
#include "hwstub.hpp"
#include "hwstub_uri.hpp"
using namespace hwstub;
struct player_info_t
{
const char *name;
const char *username;
int modelnum;
};
enum image_type_t
{
IT_RAW,
IT_ROCKBOX,
IT_DETECT,
/* positive values reserved for rockbox-specific models */
};
struct player_info_t players[] =
{
{ "zenv", "Zen V", 85 },
{ "zmoz", "Zen Mozaic", 87 },
{ "zen", "Zen", 90 },
{ "zxfi", "Zen X-Fi", 86 },
{ NULL, 0 },
};
enum image_type_t detect_type(unsigned char *buffer, size_t size)
{
if(size < 8)
return IT_RAW;
int player;
for(player = 0; players[player].name; player++)
if(memcmp(buffer + 4, players[player].name, 4) == 0)
break;
if(players[player].name == NULL)
return IT_RAW;
unsigned long checksum = players[player].modelnum;
for(size_t i = 8; i < size; i++)
checksum += buffer[i];
unsigned long expected = buffer[0] << 24 | buffer[1] << 16 | buffer[2] << 8 | buffer[3];
if(checksum != expected)
return IT_RAW;
return IT_ROCKBOX;
}
const char *get_player_name(unsigned char *buffer)
{
for(int player = 0; players[player].name; player++)
if(memcmp(buffer, players[player].name, 4) == 0)
return players[player].username;
return NULL;
}
bool could_be_rockbox(unsigned char *buffer, size_t size)
{
/* usually target use 3 or 4 digits */
if(size >= 8 && isprint(buffer[4]) && isprint(buffer[5]) && isprint(buffer[6]) &&
(isprint(buffer[7]) || buffer[7] == 0))
{
unsigned long checksum = 0;
for(size_t i = 8; i < size; i++)
checksum += buffer[i];
unsigned long expected = buffer[0] << 24 | buffer[1] << 16 | buffer[2] << 8 | buffer[3];
unsigned long expected_modelnm = expected - checksum;
if(expected_modelnm < 150)
fprintf(stderr, "This file looks like a valid rockbox image but I don't know this player: %.4s (modelnum=%ld)\n",
buffer + 4, expected_modelnm);
else
fprintf(stderr, "This file could be a valid rockbox image but I don't know this player and the checksum is strange: %.4s\n",
buffer + 4);
return true;
}
else
return false;
}
void usage(void)
{
printf("usage: hwstub_load [options] <addr> <file>\n");
printf("options:\n");
printf(" --help/-? Display this help\n");
printf(" --quiet/-q Quiet output\n");
printf(" --verbose/-v Verbose output\n");
printf(" --type/-t <t> Override file type\n");
printf(" --dev/-d <uri> Device URI (see below)\n");
printf(" --verbose/-v Display debug output\n");
printf(" --noload Skip loading stage and only execute the given address\n");
printf(" --noexec Skip execute stage and only load data the given address\n");
printf("file types:\n");
printf(" raw Load a raw binary blob\n");
printf(" rockbox Load a rockbox image produced by scramble\n");
printf(" detect Try to guess the format\n");
printf("known players:");
for(int i = 0; players[i].name; i++)
printf(" %s", players[i].name);
printf("\n");
//hwstub::usage_uri(stdout);
exit(1);
}
int main(int argc, char **argv)
{
bool quiet = false;
enum image_type_t type = IT_DETECT;
bool verbose = false;
const char *uri = hwstub::uri::default_uri().full_uri().c_str();
bool no_load = false, no_exec = false;
// parse command line
while(1)
{
static struct option long_options[] =
{
{"help", no_argument, 0, 'h'},
{"quiet", no_argument, 0, 'q'},
{"type", required_argument, 0, 't'},
{"dev", required_argument, 0, 'd'},
{"verbose", no_argument, 0, 'v'},
{"noload", no_argument, 0, 'e'},
{"noexec", no_argument, 0, 'l'},
{0, 0, 0, 0}
};
int c = getopt_long(argc, argv, "hqt:d:elv", long_options, NULL);
if(c == -1)
break;
switch(c)
{
case -1:
break;
case 'q':
quiet = true;
break;
case 'h':
usage();
break;
case 't':
if(strcmp(optarg, "raw") == 0)
type = IT_RAW;
else if(strcmp(optarg, "rockbox") == 0)
type = IT_ROCKBOX;
else if(strcmp(optarg, "detect") == 0)
type = IT_DETECT;
else
{
fprintf(stderr, "Unknown file type '%s'\n", optarg);
return 1;
}
break;
case 'd':
uri = optarg;
break;
case 'v':
verbose = true;
case 'e':
no_load = true;
break;
case 'l':
no_exec = true;
break;
default:
abort();
}
}
if(optind + 2 != argc)
usage();
char *end;
unsigned long addr = strtoul(argv[optind], &end, 0);
if(*end)
{
fprintf(stderr, "Invalid load address\n");
return 2;
}
FILE *f = fopen(argv[optind + 1], "rb");
if(f == NULL)
{
fprintf(stderr, "Cannot open file for reading: %m\n");
return 3;
}
fseek(f, 0, SEEK_END);
size_t size = ftell(f);
fseek(f, 0, SEEK_SET);
unsigned char *buffer = (unsigned char*)malloc(size);
fread(buffer, size, 1, f);
fclose(f);
if(type == IT_ROCKBOX || type == IT_DETECT)
{
enum image_type_t det = detect_type(buffer, size);
if(type == IT_ROCKBOX && det != IT_ROCKBOX)
{
if(!could_be_rockbox(buffer, size))
fprintf(stderr, "This file does not appear to be valid rockbox image.\n");
return 4;
}
if(type == IT_DETECT && det == IT_RAW)
could_be_rockbox(buffer, size);
type = det;
if(type == IT_ROCKBOX)
{
if(!quiet)
printf("Rockox image is for player %s (%.4s)\n", get_player_name(buffer + 4), buffer + 4);
memmove(buffer, buffer + 8, size - 8);
size -= 8;
}
}
if(!quiet)
{
if(type == IT_RAW)
printf("Loading raw image at %#lx\n", addr);
else
printf("Loading rockbox image at %#lx\n", addr);
}
// create usb context
std::string errstr;
std::shared_ptr<context> hwctx = uri::create_context(uri::uri(uri), &errstr);
if(!hwctx)
{
printf("Cannot create context: %s\n", errstr.c_str());
return 1;
}
if(verbose)
hwctx->set_debug(std::cout);
std::vector<std::shared_ptr<hwstub::device>> list;
hwstub::error ret = hwctx->get_device_list(list);
if(ret != hwstub::error::SUCCESS)
{
printf("Cannot get device list: %d\n", (int)ret);
return 1;
}
if(list.size() == 0)
{
printf("No hwstub device detected!\n");
return 1;
}
/* open first device */
std::shared_ptr<hwstub::handle> hwdev;
ret = list[0]->open(hwdev);
if(ret != hwstub::error::SUCCESS)
{
printf("Cannot open device: %d\n", (int)ret);
return 1;
}
/* load */
if(!no_load)
{
size_t out_size = size;
ret = hwdev->write(addr, buffer, out_size, false);
if(ret != hwstub::error::SUCCESS || out_size != size)
{
fprintf(stderr, "Image write failed: %s, %zu/%zu\n", error_string(ret).c_str(),
out_size, size);
goto Lerr;
}
}
else
printf("Skip load as requested\n");
/* exec */
if(!no_exec)
{
ret = hwdev->exec(addr, HWSTUB_EXEC_JUMP);
if(ret != hwstub::error::SUCCESS)
{
fprintf(stderr, "Exec failed: %s\n", error_string(ret).c_str());
goto Lerr;
}
}
else
printf("Skip exec as requested\n");
return 0;
Lerr:
// display log if handled
fprintf(stderr, "Device log:\n");
do
{
char buffer[128];
size_t size = sizeof(buffer) - 1;
hwstub::error err = hwdev->get_log(buffer, size);
if(err != error::SUCCESS || size == 0)
break;
buffer[size] = 0;
fprintf(stderr, "%s", buffer);
}while(1);
return 1;
}
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