#include <proxmark3.h>
#include "usb_cdc.h"
#include "cmd.h"
-//#include "usb_hid.h"
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")));
;
}
-static void Fatal(void)
-{
+static void Fatal(void) {
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,sr,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)
start_addr = 0;
end_addr = 0;
bootrom_unlocked = 0;
- byte_t rx[sizeof(UsbCommand)];
+ byte_t rx[sizeof(UsbCommand)];
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();
- 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 */
- usb_disable();
+ usb_disable();
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 */
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 |
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;
- }
+
common_area.magic = COMMON_AREA_MAGIC;
common_area.version = 1;
common_area.flags.bootrom_present = 1;
projects / proxmark3-svn / commitdiff