-void UsbPacketReceived(uint8_t *packet, int len)
-{
- int i, dont_ack=0;
- UsbCommand *c = (UsbCommand *)packet;
- volatile uint32_t *p;
-
- if(len != sizeof(*c)) {
- Fatal();
- }
-
- switch(c->cmd) {
- case CMD_DEVICE_INFO:
- dont_ack = 1;
- c->cmd = CMD_DEVICE_INFO;
- c->arg[0] = DEVICE_INFO_FLAG_BOOTROM_PRESENT | DEVICE_INFO_FLAG_CURRENT_MODE_BOOTROM |
- DEVICE_INFO_FLAG_UNDERSTANDS_START_FLASH;
- if(common_area.flags.osimage_present) c->arg[0] |= DEVICE_INFO_FLAG_OSIMAGE_PRESENT;
- UsbSendPacket(packet, len);
- break;
-
- case CMD_SETUP_WRITE:
- /* The temporary write buffer of the embedded flash controller is mapped to the
- * whole memory region, only the last 8 bits are decoded.
- */
- p = (volatile uint32_t *)&_flash_start;
- for(i = 0; i < 12; i++) {
- p[i+c->arg[0]] = c->d.asDwords[i];
- }
- break;
-
- case CMD_FINISH_WRITE:
- p = (volatile uint32_t *)&_flash_start;
- for(i = 0; i < 4; i++) {
- p[i+60] = c->d.asDwords[i];
- }
-
- /* Check that the address that we are supposed to write to is within our allowed region */
- if( ((c->arg[0]+AT91C_IFLASH_PAGE_SIZE-1) >= end_addr) || (c->arg[0] < start_addr) ) {
- /* Disallow write */
- dont_ack = 1;
- c->cmd = CMD_NACK;
- UsbSendPacket(packet, len);
- } else {
- /* Translate address to flash page and do flash, update here for the 512k part */
- AT91C_BASE_EFC0->EFC_FCR = MC_FLASH_COMMAND_KEY |
- MC_FLASH_COMMAND_PAGEN((c->arg[0]-(int)&_flash_start)/AT91C_IFLASH_PAGE_SIZE) |
- AT91C_MC_FCMD_START_PROG;
- }
-
- uint32_t sr;
-
- while(!((sr = AT91C_BASE_EFC0->EFC_FSR) & MC_FLASH_STATUS_READY))
- ;
- if(sr & (MC_FLASH_STATUS_LOCKE | MC_FLASH_STATUS_PROGE)) {
- dont_ack = 1;
- c->cmd = CMD_NACK;
- UsbSendPacket(packet, len);
- }
- break;
-
- case CMD_HARDWARE_RESET:
- USB_D_PLUS_PULLUP_OFF();
- AT91C_BASE_RSTC->RSTC_RCR = RST_CONTROL_KEY | AT91C_RSTC_PROCRST;
- break;
-
- case CMD_START_FLASH:
- if(c->arg[2] == START_FLASH_MAGIC) bootrom_unlocked = 1;
- else bootrom_unlocked = 0;
- {
- int prot_start = (int)&_bootrom_start;
- int prot_end = (int)&_bootrom_end;
- int allow_start = (int)&_flash_start;
- int allow_end = (int)&_flash_end;
- int cmd_start = c->arg[0];
- int cmd_end = c->arg[1];
-
- /* Only allow command if the bootrom is unlocked, or the parameters are outside of the protected
- * bootrom area. In any case they must be within the flash area.
- */
- if( (bootrom_unlocked || ((cmd_start >= prot_end) || (cmd_end < prot_start)))
- && (cmd_start >= allow_start) && (cmd_end <= allow_end) ) {
- start_addr = cmd_start;
- end_addr = cmd_end;
- } else {
- start_addr = end_addr = 0;
- dont_ack = 1;
- c->cmd = CMD_NACK;
- UsbSendPacket(packet, len);
- }
- }
- break;
-
- default:
- Fatal();
- break;
- }
-
- if(!dont_ack) {
- c->cmd = CMD_ACK;
- UsbSendPacket(packet, len);
- }
+void UsbPacketReceived(uint8_t *packet, int len) {
+ int i, dont_ack=0;
+ UsbCommand* c = (UsbCommand *)packet;
+ volatile uint32_t *p;
+
+ if(len != sizeof(UsbCommand)) Fatal();
+
+ uint32_t arg0 = (uint32_t)c->arg[0];
+
+ switch(c->cmd) {
+ case CMD_DEVICE_INFO: {
+ dont_ack = 1;
+ arg0 = DEVICE_INFO_FLAG_BOOTROM_PRESENT | DEVICE_INFO_FLAG_CURRENT_MODE_BOOTROM |
+ DEVICE_INFO_FLAG_UNDERSTANDS_START_FLASH;
+ if(common_area.flags.osimage_present)
+ arg0 |= DEVICE_INFO_FLAG_OSIMAGE_PRESENT;
+
+ cmd_send(CMD_DEVICE_INFO,arg0,1,2,0,0);
+ } break;
+
+ case CMD_SETUP_WRITE: {
+ /* The temporary write buffer of the embedded flash controller is mapped to the
+ * whole memory region, only the last 8 bits are decoded.
+ */
+ p = (volatile uint32_t *)&_flash_start;
+ for(i = 0; i < 12; i++)
+ p[i+arg0] = c->d.asDwords[i];
+ } break;
+
+ case CMD_FINISH_WRITE: {
+ uint32_t* flash_mem = (uint32_t*)(&_flash_start);
+ for ( int j=0; j<2; j++) {
+ for(i = 0+(64*j); i < 64+(64*j); i++) {
+ flash_mem[i] = c->d.asDwords[i];
+ }
+
+ uint32_t flash_address = arg0 + (0x100*j);
+
+ /* Check that the address that we are supposed to write to is within our allowed region */
+ if( ((flash_address+AT91C_IFLASH_PAGE_SIZE-1) >= end_addr) || (flash_address < start_addr) ) {
+ /* Disallow write */
+ dont_ack = 1;
+ cmd_send(CMD_NACK,0,0,0,0,0);
+ } else {
+ uint32_t page_n = (flash_address - ((uint32_t)flash_mem)) / AT91C_IFLASH_PAGE_SIZE;
+ /* Translate address to flash page and do flash, update here for the 512k part */
+ AT91C_BASE_EFC0->EFC_FCR = MC_FLASH_COMMAND_KEY |
+ MC_FLASH_COMMAND_PAGEN(page_n) |
+ AT91C_MC_FCMD_START_PROG;
+ }
+
+ // Wait until flashing of page finishes
+ uint32_t sr;
+ while(!((sr = AT91C_BASE_EFC0->EFC_FSR) & AT91C_MC_FRDY));
+ if(sr & (AT91C_MC_LOCKE | AT91C_MC_PROGE)) {
+ dont_ack = 1;
+ cmd_send(CMD_NACK,sr,0,0,0,0);
+ }
+ }
+ } break;
+
+ case CMD_HARDWARE_RESET: {
+ usb_disable();
+ AT91C_BASE_RSTC->RSTC_RCR = RST_CONTROL_KEY | AT91C_RSTC_PROCRST;
+ } break;
+
+ case CMD_START_FLASH: {
+ if(c->arg[2] == START_FLASH_MAGIC)
+ bootrom_unlocked = 1;
+ else
+ bootrom_unlocked = 0;
+
+ int prot_start = (int)&_bootrom_start;
+ int prot_end = (int)&_bootrom_end;
+ int allow_start = (int)&_flash_start;
+ int allow_end = (int)&_flash_end;
+ int cmd_start = c->arg[0];
+ int cmd_end = c->arg[1];
+
+ /* Only allow command if the bootrom is unlocked, or the parameters are outside of the protected
+ * bootrom area. In any case they must be within the flash area.
+ */
+ if( (bootrom_unlocked || ((cmd_start >= prot_end) || (cmd_end < prot_start))) &&
+ (cmd_start >= allow_start) &&
+ (cmd_end <= allow_end) ) {
+ start_addr = cmd_start;
+ end_addr = cmd_end;
+ } else {
+ start_addr = end_addr = 0;
+ dont_ack = 1;
+ cmd_send(CMD_NACK,0,0,0,0,0);
+ }
+ } break;
+
+ default: {
+ Fatal();
+ } break;
+ }
+
+ if(!dont_ack)
+ cmd_send(CMD_ACK,arg0,0,0,0,0);
projects / proxmark3-svn / blobdiff