X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/652c39c63bce093cec80b174dfb0d8154e7c6827..25cb718daf70da6f278428b66e9766cd81f3b5ef:/bootrom/bootrom.c diff --git a/bootrom/bootrom.c b/bootrom/bootrom.c index 7f4aa178..26231b01 100644 --- a/bootrom/bootrom.c +++ b/bootrom/bootrom.c @@ -9,14 +9,13 @@ #include #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"))); @@ -50,8 +49,7 @@ static void ConfigClocks(void) PMC_MAIN_OSC_STARTUP_DELAY(8); // wait for main oscillator to stabilize - while ( !(AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MOSCS) ) - ; + 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 @@ -64,8 +62,7 @@ static void ConfigClocks(void) PMC_PLL_USB_DIVISOR(1); // wait for PLL to lock - while ( !(AT91C_BASE_PMC->PMC_SR & AT91C_PMC_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 @@ -73,125 +70,120 @@ static void ConfigClocks(void) 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) ) - ; + 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) ) - ; + while ( !(AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MCKRDY) ) {}; } -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,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) @@ -199,28 +191,28 @@ 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 */ @@ -274,16 +266,20 @@ void BootROM(void) 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 | MC_FLASH_MODE_MASTER_CLK_IN_MHZ(48); - +#ifdef HAS_512_FLASH + AT91C_BASE_EFC1->EFC_FMR = + AT91C_MC_FWS_1FWS | + MC_FLASH_MODE_MASTER_CLK_IN_MHZ(48); +#endif // Initialize all system clocks ConfigClocks(); @@ -305,9 +301,11 @@ void BootROM(void) if(!common_area_present){ /* Common area not ok, initialize it */ - int i; for(i=0; i