#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
- PMC_SYS_CLK_ENABLE = PMC_SYS_CLK_PROCESSOR_CLK | PMC_SYS_CLK_UDP_CLK;\r
+ AT91C_BASE_PMC->PMC_SCER = AT91C_PMC_PCK | AT91C_PMC_UDP;\r
\r
// enable the clock to the following peripherals\r
- PMC_PERIPHERAL_CLK_ENABLE =\r
- (1<<PERIPH_PIOA) |\r
- (1<<PERIPH_ADC) |\r
- (1<<PERIPH_SPI) |\r
- (1<<PERIPH_SSC) |\r
- (1<<PERIPH_PWMC) |\r
- (1<<PERIPH_UDP);\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
- PMC_MAIN_OSCILLATOR = PMC_MAIN_OSCILLATOR_ENABLE |\r
- PMC_MAIN_OSCILLATOR_STARTUP_DELAY(0x50);\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 ( !(PMC_INTERRUPT_STATUS & PMC_MAIN_OSCILLATOR_STABILIZED) )\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
- PMC_PLL = PMC_PLL_DIVISOR(2) | PMC_PLL_COUNT_BEFORE_LOCK(0x50) |\r
- PMC_PLL_FREQUENCY_RANGE(0) | PMC_PLL_MULTIPLIER(12) |\r
- PMC_PLL_USB_DIVISOR(1);\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 ( !(PMC_INTERRUPT_STATUS & PMC_MAIN_OSCILLATOR_PLL_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
- PMC_MASTER_CLK = PMC_CLK_PRESCALE_DIV_2;\r
+ AT91C_BASE_PMC->PMC_MCKR = PMC_CLK_PRESCALE_DIV_2;\r
\r
// wait for main clock ready signal\r
- while ( !(PMC_INTERRUPT_STATUS & PMC_MAIN_OSCILLATOR_MCK_READY) )\r
+ while ( !(AT91C_BASE_PMC->PMC_SR & PMC_MAIN_OSC_MCK_READY) )\r
;\r
\r
// set the source to PLL\r
- PMC_MASTER_CLK = PMC_CLK_SELECTION_PLL_CLOCK | PMC_CLK_PRESCALE_DIV_2;\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 ( !(PMC_INTERRUPT_STATUS & PMC_MAIN_OSCILLATOR_MCK_READY) )\r
+ while ( !(AT91C_BASE_PMC->PMC_SR & PMC_MAIN_OSC_MCK_READY) )\r
;\r
}\r
\r
\r
void UsbPacketReceived(BYTE *packet, int len)\r
{\r
- int i;\r
+ int i, dont_ack=0;\r
UsbCommand *c = (UsbCommand *)packet;\r
volatile DWORD *p;\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
- p = (volatile DWORD *)0;\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->ext1] = c->d.asDwords[i];\r
+ p[i+c->arg[0]] = c->d.asDwords[i];\r
}\r
break;\r
\r
case CMD_FINISH_WRITE:\r
- p = (volatile DWORD *)0;\r
+ p = (volatile DWORD *)&_flash_start;\r
for(i = 0; i < 4; i++) {\r
p[i+60] = c->d.asDwords[i];\r
}\r
\r
- MC_FLASH_COMMAND = MC_FLASH_COMMAND_KEY |\r
- MC_FLASH_COMMAND_PAGEN(c->ext1/FLASH_PAGE_SIZE_BYTES) |\r
- FCMD_WRITE_PAGE;\r
- while(!(MC_FLASH_STATUS & MC_FLASH_STATUS_READY))\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
break;\r
}\r
\r
- c->cmd = CMD_ACK;\r
- UsbSendPacket(packet, len);\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
\r
// Kill all the pullups, especially the one on USB D+; leave them for\r
// the unused pins, though.\r
- PIO_NO_PULL_UP_ENABLE = (1 << GPIO_USB_PU) |\r
- (1 << GPIO_LED_A) |\r
- (1 << GPIO_LED_B) |\r
- (1 << GPIO_LED_C) |\r
- (1 << GPIO_LED_D) |\r
- (1 << GPIO_FPGA_DIN) |\r
- (1 << GPIO_FPGA_DOUT) |\r
- (1 << GPIO_FPGA_CCLK) |\r
- (1 << GPIO_FPGA_NINIT) |\r
- (1 << GPIO_FPGA_NPROGRAM) |\r
- (1 << GPIO_FPGA_DONE) |\r
- (1 << GPIO_MUXSEL_HIPKD) |\r
- (1 << GPIO_MUXSEL_HIRAW) |\r
- (1 << GPIO_MUXSEL_LOPKD) |\r
- (1 << GPIO_MUXSEL_LORAW) |\r
- (1 << GPIO_RELAY) |\r
- (1 << GPIO_NVDD_ON);\r
- // (and add GPIO_FPGA_ON)\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
- PIO_OUTPUT_ENABLE = (1 << GPIO_LED_A) |\r
- (1 << GPIO_LED_B) |\r
- (1 << GPIO_LED_C) |\r
- (1 << GPIO_LED_D) |\r
- (1 << GPIO_RELAY) |\r
- (1 << GPIO_NVDD_ON);\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
- PIO_ENABLE = (1 << GPIO_USB_PU) |\r
- (1 << GPIO_LED_A) |\r
- (1 << GPIO_LED_B) |\r
- (1 << GPIO_LED_C) |\r
- (1 << GPIO_LED_D);\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_B_OFF();\r
LED_A_OFF();\r
\r
- // if 512K FLASH part - TODO make some defines :)\r
- if ((DBGU_CIDR | 0xf00) == 0xa00) {\r
- MC_FLASH_MODE0 = MC_FLASH_MODE_FLASH_WAIT_STATES(1) |\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
- MC_FLASH_MODE1 = MC_FLASH_MODE_FLASH_WAIT_STATES(1) |\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
- MC_FLASH_MODE0 = MC_FLASH_MODE_FLASH_WAIT_STATES(0) |\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
\r
- // Initialize all system clocks\r
+ // Initialize all system clocks\r
ConfigClocks();\r
\r
LED_A_ON();\r
\r
- if(BUTTON_PRESS()) {\r
- UsbStart();\r
- }\r
-\r
- for(;;) {\r
- WDT_HIT();\r
-\r
- UsbPoll(TRUE);\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(!BUTTON_PRESS()) {\r
- USB_D_PLUS_PULLUP_OFF();\r
- LED_B_ON();\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
- // jump to RAM address 0x10000 (LSBit set for thumb mode)\r
- asm("ldr r3, = 0x10001\n");\r
- asm("bx r3\n");\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
projects / proxmark3-svn / blobdiff