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Add unlock capability #22

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Add unlock capability #22

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41 changes: 33 additions & 8 deletions lm4flash/lm4flash.c
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Original file line number Diff line number Diff line change
Expand Up @@ -114,6 +114,7 @@ static uint32_t le32_to_cpu(const uint32_t x)
return _tmp.b32;
}

static int do_unlock = 0;
static int do_verify = 0;
static int erase_used = 0;
static uint32_t start_addr = 0;
Expand Down Expand Up @@ -470,6 +471,18 @@ static int print_icdi_version(libusb_device_handle *handle)
return LIBUSB_ERROR_OTHER; \
} while (0)



static int unlock_device(libusb_device_handle *handle)
{
print_icdi_version(handle);
printf("Attempting device unlock...");

SEND_COMMAND("debug unlock");

return 1;
}

/*
* This flow is of commands is based on an USB capture of
* traffic between LM Flash Programmer and the Stellaris Launchpad
Expand Down Expand Up @@ -711,6 +724,8 @@ static void flasher_usage()
printf("\t\tWrite binary at the given address (in hexadecimal)\n");
printf("\t-s SERIAL\n");
printf("\t\tFlash device with the following serial\n");
printf("\t-U\n");
printf("\t\tUnlock the debug port\n");
}


Expand Down Expand Up @@ -763,14 +778,18 @@ static int flasher_flash(const char *serial, const char *rom_name)
goto done;
}

f = fopen(rom_name, "rb");
if (!f) {
perror("fopen");
retval = 1;
goto done;
}
if (do_unlock == 0) {
f = fopen(rom_name, "rb");
if (!f) {
perror("fopen");
retval = 1;
goto done;
}

retval = write_firmware(handle, f);
retval = write_firmware(handle, f);
}
else
retval = unlock_device(handle);

done:
if (f)
Expand All @@ -792,7 +811,7 @@ int main(int argc, char *argv[])
const char *rom_name = NULL;
int opt;

while ((opt = getopt(argc, argv, "VES:hvs:")) != -1) {
while ((opt = getopt(argc, argv, "UVES:hvs:")) != -1) {
switch (opt) {
case 'V':
show_version();
Expand All @@ -814,12 +833,18 @@ int main(int argc, char *argv[])
case 's':
serial = optarg;
break;
case 'U':
do_unlock = 1;
break;
default:
flasher_usage();
return EXIT_FAILURE;
}
}

if (do_unlock == 1)
return flasher_flash(serial, rom_name);

if (optind >= argc) {
flasher_usage();
return EXIT_FAILURE;
Expand Down