-#include <proxmark3.h>\r
-\r
-struct common_area common_area __attribute__((section(".commonarea")));\r
-unsigned int start_addr, end_addr, bootrom_unlocked;\r
-extern char _bootrom_start, _bootrom_end, _flash_start, _flash_end;\r
-\r
-static void ConfigClocks(void)\r
-{\r
- // we are using a 16 MHz crystal as the basis for everything\r
- // slow clock runs at 32Khz typical regardless of crystal\r
-\r
- // enable system clock and USB clock\r
- AT91C_BASE_PMC->PMC_SCER = AT91C_PMC_PCK | AT91C_PMC_UDP;\r
-\r
- // enable the clock to the following peripherals\r
- AT91C_BASE_PMC->PMC_PCER =\r
- (1<<AT91C_ID_PIOA) |\r
- (1<<AT91C_ID_ADC) |\r
- (1<<AT91C_ID_SPI) |\r
- (1<<AT91C_ID_SSC) |\r
- (1<<AT91C_ID_PWMC) |\r
- (1<<AT91C_ID_UDP);\r
-\r
- // worst case scenario, with 16Mhz xtal startup delay is 14.5ms\r
- // with a slow clock running at it worst case (max) frequency of 42khz\r
- // max startup delay = (14.5ms*42k)/8 = 76 = 0x4C round up to 0x50\r
-\r
- // enable main oscillator and set startup delay\r
- AT91C_BASE_PMC->PMC_MOR =\r
- PMC_MAIN_OSC_ENABLE |\r
- PMC_MAIN_OSC_STARTUP_DELAY(0x50);\r
-\r
- // wait for main oscillator to stabilize\r
- while ( !(AT91C_BASE_PMC->PMC_SR & PMC_MAIN_OSC_STABILIZED) )\r
- ;\r
-\r
- // minimum PLL clock frequency is 80 MHz in range 00 (96 here so okay)\r
- // frequency is crystal * multiplier / divisor = 16Mhz * 12 / 2 = 96Mhz\r
- AT91C_BASE_PMC->PMC_PLLR =\r
- PMC_PLL_DIVISOR(2) |\r
- PMC_PLL_COUNT_BEFORE_LOCK(0x50) |\r
- PMC_PLL_FREQUENCY_RANGE(0) |\r
- PMC_PLL_MULTIPLIER(12) |\r
- PMC_PLL_USB_DIVISOR(1);\r
-\r
- // wait for PLL to lock\r
- while ( !(AT91C_BASE_PMC->PMC_SR & PMC_MAIN_OSC_PLL_LOCK) )\r
- ;\r
-\r
- // we want a master clock (MCK) to be PLL clock / 2 = 96Mhz / 2 = 48Mhz\r
- // as per datasheet, this register must be programmed in two operations\r
- // when changing to PLL, program the prescaler first then the source\r
- AT91C_BASE_PMC->PMC_MCKR = PMC_CLK_PRESCALE_DIV_2;\r
-\r
- // wait for main clock ready signal\r
- while ( !(AT91C_BASE_PMC->PMC_SR & PMC_MAIN_OSC_MCK_READY) )\r
- ;\r
-\r
- // set the source to PLL\r
- AT91C_BASE_PMC->PMC_MCKR = AT91C_PMC_CSS_PLL_CLK | PMC_CLK_PRESCALE_DIV_2;\r
-\r
- // wait for main clock ready signal\r
- while ( !(AT91C_BASE_PMC->PMC_SR & PMC_MAIN_OSC_MCK_READY) )\r
- ;\r
-}\r
-\r
-static void Fatal(void)\r
-{\r
- for(;;);\r
-}\r
-\r
-void UsbPacketReceived(BYTE *packet, int len)\r
-{\r
- int i, dont_ack=0;\r
- UsbCommand *c = (UsbCommand *)packet;\r
- volatile DWORD *p;\r
-\r
- if(len != sizeof(*c)) {\r
- Fatal();\r
- }\r
-\r
- switch(c->cmd) {\r
- case CMD_DEVICE_INFO:\r
- dont_ack = 1;\r
- c->cmd = CMD_DEVICE_INFO;\r
- c->arg[0] = DEVICE_INFO_FLAG_BOOTROM_PRESENT | DEVICE_INFO_FLAG_CURRENT_MODE_BOOTROM |\r
- DEVICE_INFO_FLAG_UNDERSTANDS_START_FLASH;\r
- if(common_area.flags.osimage_present) c->arg[0] |= DEVICE_INFO_FLAG_OSIMAGE_PRESENT;\r
- UsbSendPacket(packet, len);\r
- break;\r
-\r
- case CMD_SETUP_WRITE:\r
- /* The temporary write buffer of the embedded flash controller is mapped to the\r
- * whole memory region, only the last 8 bits are decoded.\r
- */\r
- p = (volatile DWORD *)&_flash_start;\r
- for(i = 0; i < 12; i++) {\r
- p[i+c->arg[0]] = c->d.asDwords[i];\r
- }\r
- break;\r
-\r
- case CMD_FINISH_WRITE:\r
- p = (volatile DWORD *)&_flash_start;\r
- for(i = 0; i < 4; i++) {\r
- p[i+60] = c->d.asDwords[i];\r
- }\r
-\r
- /* Check that the address that we are supposed to write to is within our allowed region */\r
- if( ((c->arg[0]+AT91C_IFLASH_PAGE_SIZE-1) >= end_addr) || (c->arg[0] < start_addr) ) {\r
- /* Disallow write */\r
- dont_ack = 1;\r
- c->cmd = CMD_NACK;\r
- UsbSendPacket(packet, len);\r
- } else {\r
- /* Translate address to flash page and do flash, update here for the 512k part */\r
- AT91C_BASE_EFC0->EFC_FCR = MC_FLASH_COMMAND_KEY |\r
- MC_FLASH_COMMAND_PAGEN((c->arg[0]-(int)&_flash_start)/AT91C_IFLASH_PAGE_SIZE) |\r
- AT91C_MC_FCMD_START_PROG;\r
- }\r
- \r
- uint32_t sr;\r
- \r
- while(!((sr = AT91C_BASE_EFC0->EFC_FSR) & MC_FLASH_STATUS_READY))\r
- ;\r
- if(sr & (MC_FLASH_STATUS_LOCKE | MC_FLASH_STATUS_PROGE)) { \r
- dont_ack = 1;\r
- c->cmd = CMD_NACK;\r
- UsbSendPacket(packet, len);\r
- }\r
- break;\r
-\r
- case CMD_HARDWARE_RESET:\r
- USB_D_PLUS_PULLUP_OFF();\r
- AT91C_BASE_RSTC->RSTC_RCR = RST_CONTROL_KEY | AT91C_RSTC_PROCRST;\r
- break;\r
-\r
- case CMD_START_FLASH:\r
- if(c->arg[2] == START_FLASH_MAGIC) bootrom_unlocked = 1;\r
- else bootrom_unlocked = 0;\r
- {\r
- int prot_start = (int)&_bootrom_start;\r
- int prot_end = (int)&_bootrom_end;\r
- int allow_start = (int)&_flash_start;\r
- int allow_end = (int)&_flash_end;\r
- int cmd_start = c->arg[0];\r
- int cmd_end = c->arg[1];\r
-\r
- /* Only allow command if the bootrom is unlocked, or the parameters are outside of the protected\r
- * bootrom area. In any case they must be within the flash area.\r
- */\r
- if( (bootrom_unlocked || ((cmd_start >= prot_end) || (cmd_end < prot_start)))\r
- && (cmd_start >= allow_start) && (cmd_end <= allow_end) ) {\r
- start_addr = cmd_start;\r
- end_addr = cmd_end;\r
- } else {\r
- start_addr = end_addr = 0;\r
- dont_ack = 1;\r
- c->cmd = CMD_NACK;\r
- UsbSendPacket(packet, len);\r
- }\r
- }\r
- break;\r
-\r
- default:\r
- Fatal();\r
- break;\r
- }\r
-\r
- if(!dont_ack) {\r
- c->cmd = CMD_ACK;\r
- UsbSendPacket(packet, len);\r
- }\r
-}\r
-\r
-static void flash_mode(int externally_entered)\r
-{\r
- start_addr = 0;\r
- end_addr = 0;\r
- bootrom_unlocked = 0;\r
-\r
- UsbStart();\r
- for(;;) {\r
- WDT_HIT();\r
-\r
- UsbPoll(TRUE);\r
-\r
- if(!externally_entered && !BUTTON_PRESS()) {\r
- /* Perform a reset to leave flash mode */\r
- USB_D_PLUS_PULLUP_OFF();\r
- LED_B_ON();\r
- AT91C_BASE_RSTC->RSTC_RCR = RST_CONTROL_KEY | AT91C_RSTC_PROCRST;\r
- for(;;);\r
- }\r
- if(externally_entered && BUTTON_PRESS()) {\r
- /* Let the user's button press override the automatic leave */\r
- externally_entered = 0;\r
- }\r
- }\r
-}\r
-\r
-extern char _osimage_entry;\r
-void BootROM(void)\r
-{\r
- //------------\r
- // First set up all the I/O pins; GPIOs configured directly, other ones\r
- // just need to be assigned to the appropriate peripheral.\r
-\r
- // Kill all the pullups, especially the one on USB D+; leave them for\r
- // the unused pins, though.\r
- AT91C_BASE_PIOA->PIO_PPUDR =\r
- GPIO_USB_PU |\r
- GPIO_LED_A |\r
- GPIO_LED_B |\r
- GPIO_LED_C |\r
- GPIO_LED_D |\r
- GPIO_FPGA_DIN |\r
- GPIO_FPGA_DOUT |\r
- GPIO_FPGA_CCLK |\r
- GPIO_FPGA_NINIT |\r
- GPIO_FPGA_NPROGRAM |\r
- GPIO_FPGA_DONE |\r
- GPIO_MUXSEL_HIPKD |\r
- GPIO_MUXSEL_HIRAW |\r
- GPIO_MUXSEL_LOPKD |\r
- GPIO_MUXSEL_LORAW |\r
- GPIO_RELAY |\r
- GPIO_NVDD_ON;\r
- // (and add GPIO_FPGA_ON)\r
- // These pins are outputs\r
- AT91C_BASE_PIOA->PIO_OER =\r
- GPIO_LED_A |\r
- GPIO_LED_B |\r
- GPIO_LED_C |\r
- GPIO_LED_D |\r
- GPIO_RELAY |\r
- GPIO_NVDD_ON;\r
- // PIO controls the following pins\r
- AT91C_BASE_PIOA->PIO_PER =\r
- GPIO_USB_PU |\r
- GPIO_LED_A |\r
- GPIO_LED_B |\r
- GPIO_LED_C |\r
- GPIO_LED_D;\r
-\r
- USB_D_PLUS_PULLUP_OFF();\r
- LED_D_OFF();\r
- LED_C_ON();\r
- LED_B_OFF();\r
- LED_A_OFF();\r
-\r
- // if 512K FLASH part - TODO make some defines :)\r
- if ((AT91C_BASE_DBGU->DBGU_CIDR | 0xf00) == 0xa00) {\r
- AT91C_BASE_EFC0->EFC_FMR =\r
- MC_FLASH_MODE_FLASH_WAIT_STATES(1) |\r
- MC_FLASH_MODE_MASTER_CLK_IN_MHZ(0x48);\r
- AT91C_BASE_EFC1->EFC_FMR =\r
- MC_FLASH_MODE_FLASH_WAIT_STATES(1) |\r
- MC_FLASH_MODE_MASTER_CLK_IN_MHZ(0x48);\r
- } else {\r
- AT91C_BASE_EFC0->EFC_FMR =\r
- MC_FLASH_MODE_FLASH_WAIT_STATES(0) |\r
- MC_FLASH_MODE_MASTER_CLK_IN_MHZ(48);\r
- }\r
-\r
- // Initialize all system clocks\r
- ConfigClocks();\r
-\r
- LED_A_ON();\r
-\r
- int common_area_present = 0;\r
- switch(AT91C_BASE_RSTC->RSTC_RSR & AT91C_RSTC_RSTTYP) {\r
- case AT91C_RSTC_RSTTYP_WATCHDOG:\r
- case AT91C_RSTC_RSTTYP_SOFTWARE:\r
- case AT91C_RSTC_RSTTYP_USER:\r
- /* In these cases the common_area in RAM should be ok, retain it if it's there */\r
- if(common_area.magic == COMMON_AREA_MAGIC && common_area.version == 1) {\r
- common_area_present = 1;\r
- }\r
- break;\r
- default: /* Otherwise, initialize it from scratch */\r
- break;\r
- }\r
-\r
- if(!common_area_present){\r
- /* Common area not ok, initialize it */\r
- int i; for(i=0; i<sizeof(common_area); i++) { /* Makeshift memset, no need to drag util.c into this */\r
- ((char*)&common_area)[i] = 0;\r
- }\r
- common_area.magic = COMMON_AREA_MAGIC;\r
- common_area.version = 1;\r
- common_area.flags.bootrom_present = 1;\r
- }\r
-\r
- common_area.flags.bootrom_present = 1;\r
- if(common_area.command == COMMON_AREA_COMMAND_ENTER_FLASH_MODE) {\r
- common_area.command = COMMON_AREA_COMMAND_NONE;\r
- flash_mode(1);\r
- } else if(BUTTON_PRESS()) {\r
- flash_mode(0);\r
- } else if(*(uint32_t*)&_osimage_entry == 0xffffffffU) {\r
- flash_mode(1);\r
- } else {\r
- // jump to Flash address of the osimage entry point (LSBit set for thumb mode)\r
- asm("bx %0\n" : : "r" ( ((int)&_osimage_entry) | 0x1 ) );\r
- }\r
-}\r
+//-----------------------------------------------------------------------------
+// This code is licensed to you under the terms of the GNU GPL, version 2 or,
+// at your option, any later version. See the LICENSE.txt file for the text of
+// the license.
+//-----------------------------------------------------------------------------
+// Main code for the bootloader
+//-----------------------------------------------------------------------------
+
+#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);
+}
+
+struct common_area common_area __attribute__((section(".commonarea")));
+unsigned int start_addr, end_addr, bootrom_unlocked;
+extern char _bootrom_start, _bootrom_end, _flash_start, _flash_end;
+
+static void ConfigClocks(void)
+{
+ // we are using a 16 MHz crystal as the basis for everything
+ // slow clock runs at 32Khz typical regardless of crystal
+
+ // enable system clock and USB clock
+ AT91C_BASE_PMC->PMC_SCER = AT91C_PMC_PCK | AT91C_PMC_UDP;
+
+ // enable the clock to the following peripherals
+ AT91C_BASE_PMC->PMC_PCER =
+ (1<<AT91C_ID_PIOA) |
+ (1<<AT91C_ID_ADC) |
+ (1<<AT91C_ID_SPI) |
+ (1<<AT91C_ID_SSC) |
+ (1<<AT91C_ID_PWMC) |
+ (1<<AT91C_ID_UDP);
+
+ // worst case scenario, with MAINCK = 16Mhz xtal, startup delay is 1.4ms
+ // if SLCK slow clock runs at its worst case (max) frequency of 42khz
+ // max startup delay = (1.4ms*42k)/8 = 7.356 so round up to 8
+
+ // enable main oscillator and set startup delay
+ AT91C_BASE_PMC->PMC_MOR =
+ AT91C_CKGR_MOSCEN |
+ PMC_MAIN_OSC_STARTUP_DELAY(8);
+
+ // wait for main oscillator to stabilize
+ while ( !(AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MOSCS) )
+ ;
+
+ // PLL output clock frequency in range 80 - 160 MHz needs CKGR_PLL = 00
+ // PLL output clock frequency in range 150 - 180 MHz needs CKGR_PLL = 10
+ // PLL output is MAINCK * multiplier / divisor = 16Mhz * 12 / 2 = 96Mhz
+ AT91C_BASE_PMC->PMC_PLLR =
+ PMC_PLL_DIVISOR(2) |
+ PMC_PLL_COUNT_BEFORE_LOCK(0x50) |
+ PMC_PLL_FREQUENCY_RANGE(0) |
+ PMC_PLL_MULTIPLIER(12) |
+ PMC_PLL_USB_DIVISOR(1);
+
+ // wait for PLL to lock
+ while ( !(AT91C_BASE_PMC->PMC_SR & AT91C_PMC_LOCK) )
+ ;
+
+ // we want a master clock (MCK) to be PLL clock / 2 = 96Mhz / 2 = 48Mhz
+ // datasheet recommends that this register is programmed in two operations
+ // when changing to PLL, program the prescaler first then the source
+ AT91C_BASE_PMC->PMC_MCKR = AT91C_PMC_PRES_CLK_2;
+
+ // wait for main clock ready signal
+ while ( !(AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MCKRDY) )
+ ;
+
+ // set the source to PLL
+ AT91C_BASE_PMC->PMC_MCKR = AT91C_PMC_PRES_CLK_2 | AT91C_PMC_CSS_PLL_CLK;
+
+ // wait for main clock ready signal
+ while ( !(AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MCKRDY) )
+ ;
+}
+
+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();
+ }
+
+ 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 (size_t 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,0,0,0,0,0);
+ }
+ }
+ } 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);
+ }
+}
+
+static void flash_mode(int externally_entered)
+{
+ start_addr = 0;
+ end_addr = 0;
+ bootrom_unlocked = 0;
+ byte_t rx[sizeof(UsbCommand)];
+ size_t rx_len;
+
+ 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(!externally_entered && !BUTTON_PRESS()) {
+ /* Perform a reset to leave flash mode */
+ usb_disable();
+ LED_B_ON();
+ AT91C_BASE_RSTC->RSTC_RCR = RST_CONTROL_KEY | AT91C_RSTC_PROCRST;
+ for(;;);
+ }
+ if(externally_entered && BUTTON_PRESS()) {
+ /* Let the user's button press override the automatic leave */
+ externally_entered = 0;
+ }
+ }
+}
+
+extern uint32_t _osimage_entry;
+void BootROM(void)
+{
+ //------------
+ // First set up all the I/O pins; GPIOs configured directly, other ones
+ // just need to be assigned to the appropriate peripheral.
+
+ // Kill all the pullups, especially the one on USB D+; leave them for
+ // the unused pins, though.
+ AT91C_BASE_PIOA->PIO_PPUDR =
+ GPIO_USB_PU |
+ GPIO_LED_A |
+ GPIO_LED_B |
+ GPIO_LED_C |
+ GPIO_LED_D |
+ GPIO_FPGA_DIN |
+ GPIO_FPGA_DOUT |
+ GPIO_FPGA_CCLK |
+ GPIO_FPGA_NINIT |
+ GPIO_FPGA_NPROGRAM |
+ GPIO_FPGA_DONE |
+ GPIO_MUXSEL_HIPKD |
+ GPIO_MUXSEL_HIRAW |
+ GPIO_MUXSEL_LOPKD |
+ GPIO_MUXSEL_LORAW |
+ GPIO_RELAY |
+ GPIO_NVDD_ON;
+ // (and add GPIO_FPGA_ON)
+ // These pins are outputs
+ AT91C_BASE_PIOA->PIO_OER =
+ GPIO_LED_A |
+ GPIO_LED_B |
+ GPIO_LED_C |
+ GPIO_LED_D |
+ GPIO_RELAY |
+ GPIO_NVDD_ON;
+ // PIO controls the following pins
+ AT91C_BASE_PIOA->PIO_PER =
+ GPIO_USB_PU |
+ GPIO_LED_A |
+ GPIO_LED_B |
+ GPIO_LED_C |
+ GPIO_LED_D;
+
+// USB_D_PLUS_PULLUP_OFF();
+ usb_disable();
+ LED_D_OFF();
+ LED_C_ON();
+ LED_B_OFF();
+ LED_A_OFF();
+
+ AT91C_BASE_EFC0->EFC_FMR =
+ AT91C_MC_FWS_1FWS |
+ MC_FLASH_MODE_MASTER_CLK_IN_MHZ(48);
+
+ // Initialize all system clocks
+ ConfigClocks();
+
+ LED_A_ON();
+
+ int common_area_present = 0;
+ switch(AT91C_BASE_RSTC->RSTC_RSR & AT91C_RSTC_RSTTYP) {
+ case AT91C_RSTC_RSTTYP_WATCHDOG:
+ case AT91C_RSTC_RSTTYP_SOFTWARE:
+ case AT91C_RSTC_RSTTYP_USER:
+ /* In these cases the common_area in RAM should be ok, retain it if it's there */
+ if(common_area.magic == COMMON_AREA_MAGIC && common_area.version == 1) {
+ common_area_present = 1;
+ }
+ break;
+ default: /* Otherwise, initialize it from scratch */
+ break;
+ }
+
+ 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 */
+ ((char*)&common_area)[i] = 0;
+ }
+ common_area.magic = COMMON_AREA_MAGIC;
+ common_area.version = 1;
+ common_area.flags.bootrom_present = 1;
+ }
+
+ common_area.flags.bootrom_present = 1;
+ if(common_area.command == COMMON_AREA_COMMAND_ENTER_FLASH_MODE) {
+ common_area.command = COMMON_AREA_COMMAND_NONE;
+ flash_mode(1);
+ } else if(BUTTON_PRESS()) {
+ flash_mode(0);
+ } else if(_osimage_entry == 0xffffffffU) {
+ flash_mode(1);
+ } else {
+ // jump to Flash address of the osimage entry point (LSBit set for thumb mode)
+ __asm("bx %0\n" : : "r" ( ((int)&_osimage_entry) | 0x1 ) );
+ }
+}
projects / proxmark3-svn / blobdiff