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/*
* Copyright © 2013 Keith Packard <keithp@keithp.com>
*
* 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 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, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include <string.h>
#include <stdlib.h>
#include "ao-editaltos.h"
struct ao_sym ao_symbols[] = {
[AO_ROMCONFIG_VERSION_INDEX] = {
.name = "ao_romconfig_version",
.required = 1
},
[AO_ROMCONFIG_CHECK_INDEX] = {
.name = "ao_romconfig_check",
.required = 1
},
[AO_SERIAL_NUMBER_INDEX] = {
.name = "ao_serial_number",
.required = 1
},
[AO_RADIO_CAL_INDEX] = {
.name = "ao_radio_cal",
.required = 0
},
[AO_USB_DESCRIPTORS_INDEX] = {
.name = "ao_usb_descriptors",
.required = 0
},
};
#define NUM_SYMBOLS 5
int ao_num_symbols = NUM_SYMBOLS;
/*
* Edit the to-be-written memory block
*/
static bool
rewrite(struct ao_hex_image *load, unsigned address, uint8_t *data, int length)
{
if (address < load->address || load->address + load->length < address + length)
return false;
memcpy(load->data + address - load->address, data, length);
return true;
}
/*
* Find the symbols needed to correctly load the program
*/
bool
ao_editaltos_find_symbols(struct ao_sym *file_symbols, int num_file_symbols,
struct ao_sym *symbols, int num_symbols)
{
int f, s;
for (f = 0; f < num_file_symbols; f++) {
for (s = 0; s < num_symbols; s++) {
if (strcmp(symbols[s].name, file_symbols[f].name) == 0) {
symbols[s].addr = file_symbols[f].addr;
symbols[s].found = true;
}
}
}
for (s = 0; s < num_symbols; s++)
if (!symbols[s].found && symbols[s].required)
return false;
return true;
}
bool
ao_editaltos(struct ao_hex_image *image,
uint16_t serial,
uint32_t cal)
{
uint8_t *serial_ucs2;
int serial_ucs2_len;
uint8_t serial_int[2];
unsigned int s;
int i;
int string_num;
uint8_t cal_int[4];
/* Write the config values into the flash image
*/
serial_int[0] = serial & 0xff;
serial_int[1] = (serial >> 8) & 0xff;
if (!rewrite(image, AO_SERIAL_NUMBER, serial_int, sizeof (serial_int))) {
fprintf(stderr, "Cannot rewrite serial integer at %08x\n",
AO_SERIAL_NUMBER);
return false;
}
if (AO_USB_DESCRIPTORS) {
uint32_t usb_descriptors = AO_USB_DESCRIPTORS - image->address;
string_num = 0;
while (image->data[usb_descriptors] != 0 && usb_descriptors < image->length) {
if (image->data[usb_descriptors+1] == AO_USB_DESC_STRING) {
++string_num;
if (string_num == 4)
break;
}
usb_descriptors += image->data[usb_descriptors];
}
if (usb_descriptors >= image->length || image->data[usb_descriptors] == 0 ) {
fprintf(stderr, "Cannot rewrite serial string at %08x\n", AO_USB_DESCRIPTORS);
return false;
}
serial_ucs2_len = image->data[usb_descriptors] - 2;
serial_ucs2 = malloc(serial_ucs2_len);
if (!serial_ucs2) {
fprintf(stderr, "Malloc(%d) failed\n", serial_ucs2_len);
return false;
}
s = serial;
for (i = serial_ucs2_len / 2; i; i--) {
serial_ucs2[i * 2 - 1] = 0;
serial_ucs2[i * 2 - 2] = (s % 10) + '0';
s /= 10;
}
if (!rewrite(image, usb_descriptors + 2 + image->address, serial_ucs2, serial_ucs2_len)) {
fprintf (stderr, "Cannot rewrite USB descriptor at %08x\n", AO_USB_DESCRIPTORS);
return false;
}
}
if (cal && AO_RADIO_CAL) {
cal_int[0] = cal & 0xff;
cal_int[1] = (cal >> 8) & 0xff;
cal_int[2] = (cal >> 16) & 0xff;
cal_int[3] = (cal >> 24) & 0xff;
if (!rewrite(image, AO_RADIO_CAL, cal_int, sizeof (cal_int))) {
fprintf(stderr, "Cannot rewrite radio calibration at %08x\n", AO_RADIO_CAL);
return false;
}
}
return true;
}
static uint16_t
read_le16(uint8_t *src)
{
return (uint16_t) src[0] | ((uint16_t) src[1] << 8);
}
bool
ao_heximage_usb_id(struct ao_hex_image *image, struct ao_usb_id *id)
{
uint32_t usb_descriptors;
if (!AO_USB_DESCRIPTORS)
return false;
usb_descriptors = AO_USB_DESCRIPTORS - image->address;
while (image->data[usb_descriptors] != 0 && usb_descriptors < image->length) {
if (image->data[usb_descriptors+1] == AO_USB_DESC_DEVICE) {
break;
}
usb_descriptors += image->data[usb_descriptors];
}
/*
* check to make sure there's at least 0x12 (size of a USB
* device descriptor) available
*/
if (usb_descriptors >= image->length || image->data[usb_descriptors] != 0x12)
return false;
id->vid = read_le16(image->data + usb_descriptors + 8);
id->pid = read_le16(image->data + usb_descriptors + 10);
return true;
}
uint16_t *
ao_heximage_usb_product(struct ao_hex_image *image)
{
uint32_t usb_descriptors;
int string_num;
uint16_t *product;
uint8_t product_len;
if (!AO_USB_DESCRIPTORS)
return NULL;
usb_descriptors = AO_USB_DESCRIPTORS - image->address;
string_num = 0;
while (image->data[usb_descriptors] != 0 && usb_descriptors < image->length) {
if (image->data[usb_descriptors+1] == AO_USB_DESC_STRING) {
++string_num;
if (string_num == 3)
break;
}
usb_descriptors += image->data[usb_descriptors];
}
/*
* check to make sure there's at least 0x12 (size of a USB
* device descriptor) available
*/
if (usb_descriptors >= image->length || image->data[usb_descriptors] == 0)
return NULL;
product_len = image->data[usb_descriptors] - 2;
if (usb_descriptors < product_len + 2)
return NULL;
product = malloc (product_len + 2);
if (!product)
return NULL;
memcpy(product, image->data + usb_descriptors + 2, product_len);
product[product_len/2] = 0;
return product;
}
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