+//-----------------------------------------------------------------------------
+// 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_hid.h"
struct common_area common_area __attribute__((section(".commonarea")));
unsigned int start_addr, end_addr, bootrom_unlocked;
(1<<AT91C_ID_PWMC) |
(1<<AT91C_ID_UDP);
- // worst case scenario, with 16Mhz xtal startup delay is 14.5ms
- // with a slow clock running at it worst case (max) frequency of 42khz
- // max startup delay = (14.5ms*42k)/8 = 76 = 0x4C round up to 0x50
+ // 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 =
- PMC_MAIN_OSC_ENABLE |
- PMC_MAIN_OSC_STARTUP_DELAY(0x50);
+ AT91C_CKGR_MOSCEN |
+ PMC_MAIN_OSC_STARTUP_DELAY(8);
// wait for main oscillator to stabilize
- while ( !(AT91C_BASE_PMC->PMC_SR & PMC_MAIN_OSC_STABILIZED) )
+ while ( !(AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MOSCS) )
;
- // minimum PLL clock frequency is 80 MHz in range 00 (96 here so okay)
- // frequency is crystal * multiplier / divisor = 16Mhz * 12 / 2 = 96Mhz
+ // 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_USB_DIVISOR(1);
// wait for PLL to lock
- while ( !(AT91C_BASE_PMC->PMC_SR & PMC_MAIN_OSC_PLL_LOCK) )
+ while ( !(AT91C_BASE_PMC->PMC_SR & AT91C_PMC_LOCK) )
;
// we want a master clock (MCK) to be PLL clock / 2 = 96Mhz / 2 = 48Mhz
- // as per datasheet, this register must be programmed in two operations
+ // 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 = PMC_CLK_PRESCALE_DIV_2;
+ AT91C_BASE_PMC->PMC_MCKR = AT91C_PMC_PRES_CLK_2;
// wait for main clock ready signal
- while ( !(AT91C_BASE_PMC->PMC_SR & PMC_MAIN_OSC_MCK_READY) )
+ while ( !(AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MCKRDY) )
;
// set the source to PLL
- AT91C_BASE_PMC->PMC_MCKR = AT91C_PMC_CSS_PLL_CLK | PMC_CLK_PRESCALE_DIV_2;
+ 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 & PMC_MAIN_OSC_MCK_READY) )
+ while ( !(AT91C_BASE_PMC->PMC_SR & AT91C_PMC_MCKRDY) )
;
}
for(;;);
}
-void UsbPacketReceived(BYTE *packet, int len)
+void UsbPacketReceived(uint8_t *packet, int len)
{
int i, dont_ack=0;
UsbCommand *c = (UsbCommand *)packet;
- volatile DWORD *p;
+ volatile uint32_t *p;
if(len != sizeof(*c)) {
Fatal();
/* 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 DWORD *)&_flash_start;
+ p = (volatile uint32_t *)&_flash_start;
for(i = 0; i < 12; i++) {
p[i+c->arg[0]] = c->d.asDwords[i];
}
break;
case CMD_FINISH_WRITE:
- p = (volatile DWORD *)&_flash_start;
+ p = (volatile uint32_t *)&_flash_start;
for(i = 0; i < 4; i++) {
p[i+60] = c->d.asDwords[i];
}
MC_FLASH_COMMAND_PAGEN((c->arg[0]-(int)&_flash_start)/AT91C_IFLASH_PAGE_SIZE) |
AT91C_MC_FCMD_START_PROG;
}
-
+
uint32_t sr;
-
- while(!((sr = AT91C_BASE_EFC0->EFC_FSR) & MC_FLASH_STATUS_READY))
+
+ while(!((sr = AT91C_BASE_EFC0->EFC_FSR) & AT91C_MC_FRDY))
;
- if(sr & (MC_FLASH_STATUS_LOCKE | MC_FLASH_STATUS_PROGE)) {
+ if(sr & (AT91C_MC_LOCKE | AT91C_MC_PROGE)) {
dont_ack = 1;
c->cmd = CMD_NACK;
UsbSendPacket(packet, len);
LED_B_OFF();
LED_A_OFF();
- // if 512K FLASH part - TODO make some defines :)
- if ((AT91C_BASE_DBGU->DBGU_CIDR | 0xf00) == 0xa00) {
- AT91C_BASE_EFC0->EFC_FMR =
- MC_FLASH_MODE_FLASH_WAIT_STATES(1) |
- MC_FLASH_MODE_MASTER_CLK_IN_MHZ(0x48);
- AT91C_BASE_EFC1->EFC_FMR =
- MC_FLASH_MODE_FLASH_WAIT_STATES(1) |
- MC_FLASH_MODE_MASTER_CLK_IN_MHZ(0x48);
- } else {
- AT91C_BASE_EFC0->EFC_FMR =
- MC_FLASH_MODE_FLASH_WAIT_STATES(0) |
- MC_FLASH_MODE_MASTER_CLK_IN_MHZ(48);
- }
+ AT91C_BASE_EFC0->EFC_FMR =
+ AT91C_MC_FWS_1FWS |
+ MC_FLASH_MODE_MASTER_CLK_IN_MHZ(48);
// Initialize all system clocks
ConfigClocks();
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 ) );
+ __asm("bx %0\n" : : "r" ( ((int)&_osimage_entry) | 0x1 ) );
}
}
projects / proxmark3-svn / blobdiff