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   1 /*
   2  * Copyright © 2013 Keith Packard <keithp@keithp.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  17  */
  18
  19 #include <stdio.h>
  20 #include <stdint.h>
  21 #include <stdlib.h>
  22 #include <sysexits.h>
  23 #include <unistd.h>
  24 #include <string.h>
  25 #include "ao-hex.h"
  26 #include "ao-selfload.h"
  27 #include "ao-verbose.h"
  28
  29 #define TRACE(...) ao_printf(AO_VERBOSE_SELF, __VA_ARGS__)
  30
  31 static void
  32 ao_self_block_read(struct cc_usb *cc, uint32_t address, uint8_t block[256])
  33 {
  34         int                     byte;
  35         cc_usb_sync(cc);
  36         cc_usb_printf(cc, "R %x\n", address);
  37         for (byte = 0; byte < 0x100; byte++) {
  38                 block[byte] = cc_usb_getchar(cc);
  39         }
  40         TRACE ("\nread %08x\n", address);
  41         for (byte = 0; byte < 0x100; byte++) {
  42                 TRACE (" %02x", block[byte]);
  43                 if ((byte & 0xf) == 0xf)
  44                         TRACE ("\n");
  45         }
  46 }
  47
  48 static void
  49 ao_self_block_write(struct cc_usb *cc, uint32_t address, uint8_t block[256])
  50 {
  51         int                     byte;
  52         cc_usb_sync(cc);
  53         cc_usb_printf(cc, "W %x\n", address);
  54         TRACE ("write %08x\n", address);
  55         for (byte = 0; byte < 0x100; byte++) {
  56                 TRACE (" %02x", block[byte]);
  57                 if ((byte & 0xf) == 0xf)
  58                         TRACE ("\n");
  59         }
  60         for (byte = 0; byte < 0x100; byte++) {
  61                 cc_usb_printf(cc, "%c", block[byte]);
  62         }
  63 }
  64
  65 struct ao_hex_image *
  66 ao_self_read(struct cc_usb *cc, uint32_t address, uint32_t length)
  67 {
  68         struct ao_hex_image     *image;
  69         int                     pages;
  70         int                     page;
  71         uint32_t                base = address & ~0xff;
  72         uint32_t                bound = (address + length + 0xff) & ~0xff;
  73
  74         image = calloc(sizeof (struct ao_hex_image) + (bound - base), 1);
  75         image->address = base;
  76         image->length = bound - base;
  77         pages = image->length / 0x100;
  78         for (page = 0; page < pages; page++)
  79                 ao_self_block_read(cc, image->address + page * 0x100, image->data + page * 0x100);
  80         return image;
  81 }
  82
  83 bool
  84 ao_self_write(struct cc_usb *cc, struct ao_hex_image *image)
  85 {
  86         uint8_t         block[256];
  87         uint8_t         check[256];
  88         uint32_t        base, bound, length, address;
  89         uint32_t        pages;
  90         uint32_t        page;
  91
  92         base = image->address & ~0xff;
  93         bound = (image->address + image->length + 0xff) & ~0xff;
  94
  95         address = base;
  96         length = bound - base;
  97
  98         pages = length / 0x100;
  99         printf ("Write %08x %d pages: ", address, length/0x100); fflush(stdout);
 100         for (page = 0; page < pages; page++) {
 101                 uint32_t        start, stop;
 102                 address = base + page * 0x100;
 103
 104                 if (address < image->address || address + 0x100 > image->address + image->length) {
 105                         ao_self_block_read(cc, address, block);
 106                 }
 107                 start = address;
 108                 stop = address + 0x100;
 109                 if (start < image->address)
 110                         start = image->address;
 111                 if (stop > image->address + image->length)
 112                         stop = image->address + image->length;
 113                 memset(block, 0xff, 0x100);
 114                 memcpy(block + start - address, image->data + start - image->address, stop - start);
 115                 ao_self_block_write(cc, address, block);
 116                 ao_self_block_read(cc, address, check);
 117                 if (memcmp(block, check, 0x100) != 0) {
 118                         fprintf(stderr, "Block at 0x%08x doesn't match\n", address);
 119                         return 0;
 120                 }
 121                 putchar('.'); fflush(stdout);
 122         }
 123         printf("done\n");
 124         cc_usb_printf(cc,"a\n");
 125         return 1;
 126 }
 127
 128 /*
 129  * Read a 16-bit value from the USB target
 130  */
 131
 132 uint16_t
 133 ao_self_get_uint16(struct cc_usb *cc, uint32_t addr)
 134 {
 135         struct ao_hex_image     *hex = ao_self_read(cc, addr, 2);
 136         uint16_t                v;
 137         uint8_t                 *data;
 138
 139         if (!hex)
 140                 return 0;
 141         data = hex->data + addr - hex->address;
 142         v = data[0] | (data[1] << 8);
 143         free(hex);
 144         return v;
 145 }
 146
 147 uint32_t
 148 ao_self_get_uint32(struct cc_usb *cc, uint32_t addr)
 149 {
 150         struct ao_hex_image     *hex = ao_self_read(cc, addr, 4);
 151         uint32_t                v;
 152         uint8_t                 *data;
 153
 154         if (!hex)
 155                 return 0;
 156         data = hex->data + addr - hex->address;
 157         v = data[0] | (data[1] << 8) | (data[2] << 16) | (data[3] << 24);
 158         free(hex);
 159         return v;
 160 }
 161
 162 bool
 163 ao_self_get_usb_id(struct cc_usb *cc, struct ao_usb_id *id)
 164 {
 165         struct ao_hex_image     *hex;
 166         bool                    ret;
 167
 168         if (!AO_USB_DESCRIPTORS)
 169                 return false;
 170
 171         hex = ao_self_read(cc, AO_USB_DESCRIPTORS, 512);
 172         if (!hex)
 173                 return false;
 174
 175         ret = ao_heximage_usb_id(hex, id);
 176         free(hex);
 177         return ret;
 178 }
 179
 180 uint16_t *
 181 ao_self_get_usb_product(struct cc_usb *cc)
 182 {
 183         struct ao_hex_image     *hex;
 184         uint16_t                *ret;
 185
 186         if (!AO_USB_DESCRIPTORS)
 187                 return NULL;
 188
 189         hex = ao_self_read(cc, AO_USB_DESCRIPTORS, 512);
 190         if (!hex)
 191                 return NULL;
 192
 193         ret = ao_heximage_usb_product(hex);
 194         free(hex);
 195         return ret;
 196 }
 197