diff options
Diffstat (limited to 'ao-tools/lib/ao-editaltos.c')
| -rw-r--r-- | ao-tools/lib/ao-editaltos.c | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/ao-tools/lib/ao-editaltos.c b/ao-tools/lib/ao-editaltos.c new file mode 100644 index 00000000..a8b64098 --- /dev/null +++ b/ao-tools/lib/ao-editaltos.c @@ -0,0 +1,153 @@ +/* + * 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; version 2 of the License. + * + * 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[] = { + + { 0, 0, "ao_romconfig_version", 1 }, + { 0, 0, "ao_romconfig_check", 1 }, + { 0, 0, "ao_serial_number", 1 }, + { 0, 0, "ao_radio_cal", 0 }, + { 0, 0, "ao_usb_descriptors", 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) +{ + int i; + + if (address < load->address || load->address + load->length < address + length) + return false; + + printf("rewrite %04x:", address); + for (i = 0; i < length; i++) + printf (" %02x", load->data[address - load->address + i]); + printf(" ->"); + for (i = 0; i < length; i++) + printf (" %02x", data[i]); + printf("\n"); + 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; +} |