Update README.md

[proxmark3-svn] / bootrom / bootrom.c

diff --git a/bootrom/bootrom.c b/bootrom/bootrom.c
index 7f4aa17811290496b314434b1e54b5bc082b6fb6..63c04ae5c952ab4ec61aac15f1d61ba4b188e5a4 100644 (file)
--- a/bootrom/bootrom.c
+++ b/bootrom/bootrom.c
@@ -9,14 +9,13 @@
 #include <proxmark3.h>
 #include "usb_cdc.h"
 #include "cmd.h"
 #include <proxmark3.h>
 #include "usb_cdc.h"
 #include "cmd.h"

-//#include "usb_hid.h"

 
 void DbpString(char *str) {
 
 void DbpString(char *str) {

-  byte_t len = 0;
-  while (str[len] != 0x00) {
-    len++;
-  }
-  cmd_send(CMD_DEBUG_PRINT_STRING,len,0,0,(byte_t*)str,len);
+       byte_t len = 0;
+       while (str[len] != 0x00)
+               ++len;
+       
+       cmd_send(CMD_DEBUG_PRINT_STRING,len,0,0,(byte_t*)str,len);

 }
 
 struct common_area common_area __attribute__((section(".commonarea")));
 }
 
 struct common_area common_area __attribute__((section(".commonarea")));


@@ -84,114 +83,111 @@ static void ConfigClocks(void)
                ;
 }
 
                ;
 }
 

-static void Fatal(void)
-{
+static void Fatal(void) {

   for(;;);
 }
 
 void UsbPacketReceived(uint8_t *packet, int len) {
   for(;;);
 }
 
 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();
-  }
+       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];
+       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;
+       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_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 (size_t j=0; j<2; j++) {
-        for(i = 0+(64*j); i < 64+(64*j); i++) {
-          flash_mem[i] = c->d.asDwords[i];
-        }
+               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);
+                               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;
-        }
+                               /* 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,0,0,0,0,0);
-        }
-      }
-    } break;
+                               // 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_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;
+               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;
-  }
+               default: {
+                       Fatal();
+               } break;
+       }

   
   

-  if(!dont_ack) {
-    cmd_send(CMD_ACK,arg0,0,0,0,0);
-  }
+       if(!dont_ack)
+               cmd_send(CMD_ACK,arg0,0,0,0,0);

 }
 
 static void flash_mode(int externally_entered)
 }
 
 static void flash_mode(int externally_entered)


@@ -199,28 +195,29 @@ static void flash_mode(int externally_entered)
        start_addr = 0;
        end_addr = 0;
        bootrom_unlocked = 0;
        start_addr = 0;
        end_addr = 0;
        bootrom_unlocked = 0;

-  byte_t rx[sizeof(UsbCommand)];
+       byte_t rx[sizeof(UsbCommand)];

        size_t rx_len;
 
        size_t rx_len;
 

-  usb_enable();
-  for (volatile size_t i=0; i<0x100000; i++);
+       usb_enable();
+       for (volatile size_t i=0; i<0x100000; i++)
+               ;

 
        for(;;) {
                WDT_HIT();
 
 
        for(;;) {
                WDT_HIT();
 

-    if (usb_poll()) {
-      rx_len = usb_read(rx,sizeof(UsbCommand));
-      if (rx_len) {
-        UsbPacketReceived(rx,rx_len);
-      }
-    }
+               if (usb_poll()) {
+                       rx_len = usb_read(rx,sizeof(UsbCommand));
+                       if (rx_len)
+                               UsbPacketReceived(rx,rx_len);
+               }

 
                if(!externally_entered && !BUTTON_PRESS()) {
                        /* Perform a reset to leave flash mode */
 
                if(!externally_entered && !BUTTON_PRESS()) {
                        /* Perform a reset to leave flash mode */

-               usb_disable();
+                       usb_disable();

                        LED_B_ON();
                        AT91C_BASE_RSTC->RSTC_RCR = RST_CONTROL_KEY | AT91C_RSTC_PROCRST;
                        LED_B_ON();
                        AT91C_BASE_RSTC->RSTC_RCR = RST_CONTROL_KEY | AT91C_RSTC_PROCRST;

-                       for(;;);
+                       for(;;)
+                               ;

                }
                if(externally_entered && BUTTON_PRESS()) {
                        /* Let the user's button press override the automatic leave */
                }
                if(externally_entered && BUTTON_PRESS()) {
                        /* Let the user's button press override the automatic leave */


@@ -274,11 +271,11 @@ void BootROM(void)
                GPIO_LED_D;
 
 //    USB_D_PLUS_PULLUP_OFF();
                GPIO_LED_D;
 
 //    USB_D_PLUS_PULLUP_OFF();

-  usb_disable();
-    LED_D_OFF();
-    LED_C_ON();
-    LED_B_OFF();
-    LED_A_OFF();
+       usb_disable();
+       LED_D_OFF();
+       LED_C_ON();
+       LED_B_OFF();
+       LED_A_OFF();

 
        AT91C_BASE_EFC0->EFC_FMR =
                AT91C_MC_FWS_1FWS |
 
        AT91C_BASE_EFC0->EFC_FMR =
                AT91C_MC_FWS_1FWS |


@@ -305,9 +302,11 @@ void BootROM(void)
 
     if(!common_area_present){
            /* Common area not ok, initialize it */
 
     if(!common_area_present){
            /* Common area not ok, initialize it */

-           int i; for(i=0; i<sizeof(common_area); i++) { /* Makeshift memset, no need to drag util.c into this */
+           int i; 
+               /* Makeshift memset, no need to drag util.c into this */
+               for(i=0; i<sizeof(common_area); i++) 

                    ((char*)&common_area)[i] = 0;
                    ((char*)&common_area)[i] = 0;

-           }
+           

            common_area.magic = COMMON_AREA_MAGIC;
            common_area.version = 1;
            common_area.flags.bootrom_present = 1;
            common_area.magic = COMMON_AREA_MAGIC;
            common_area.version = 1;
            common_area.flags.bootrom_present = 1;