/**************************************************************************************************
* @fn main
*
* @brief ISR for the reset vector.
*
* input parameters
*
* None.
*
* output parameters
*
* None.
*
* @return None.
**************************************************************************************************
*/
void main(void)
{
uint8 time_spent_validating;
uint8 bootloaderForcedByMainApp = FALSE;
uint32 mainAppCommandLocal = mainAppCommand;
mainAppCommand = MAIN_APP_CMD_NONE;
if (mainAppCommandLocal == MAIN_APP_CMD_FORCE_BOOTLOADER)
{
bootloaderForcedByMainApp = TRUE;
}
else if ((mainAppCommandLocal == MAIN_APP_CMD_PASS_THROUGH) || ((SLEEPSTA & LRESET) == RESETWD))
/* If reset due to WatchDog Timer - Transfer control to the main application immediately.
WatchDog Timer reset causes the hardware to disconnect the USB. Without this jump here,
the SBL code will try to initiaize the CDC too early, which causes undesired behavior
on the host (e.g. on beaglebone black - the host gets stuck) */
{
asm("LJMP 0x2000\n");
}
sblInit();
if ((!bootloaderForcedByMainApp) && sbImgValid(&time_spent_validating))
{
if (sblWait(SBL_WAIT_TIME > time_spent_validating ? SBL_WAIT_TIME - time_spent_validating : 0))
{
if (znpCfg1 == ZNP_CFG1_SPI)
{
HalUARTUnInitSPI();
}
else
{
sbReportState(SB_STATE_EXECUTING_IMAGE);
while(sblIsUartTxPending())
{
sbUartPoll();
}
SLEEP(0x2600); //Give the last bytes in the HW TX fifo (if any) enough time to be transmitted
HalUARTUnInitISR();
}
magicByte = SB_STACK_VALUE;
// Simulate a reset for the Application code by an absolute jump to location 0x2000.
asm("LJMP 0x2000\n");
HAL_SYSTEM_RESET();
}
}
sblExec();
HAL_SYSTEM_RESET();
}
/**************************************************************************************************
* @fn sblParse
*
* @brief Serial Boot parser according to the RPC UART transport.
*
* input parameters
*
* @param ch - The Rx character to parse.
*
* output parameters
*
* None.
*
* @return TRUE if the downloaded code has been enabled; FALSE otherwise.
*/
static uint8 sblParse(uint8 ch)
{
sbBuf[sbSte + sbIdx] = ch;
switch (sbSte)
{
case SBL_SOF_STATE:
if (RPC_UART_SOF == ch)
{
sbSte = SBL_LEN_STATE;
}
break;
case SBL_LEN_STATE:
sbFcs = sbIdx = 0;
sbSte = SBL_CMD1_STATE;
sbSte = ((sbLen = ch) >= SBL_MAX_SIZE) ? SBL_SOF_STATE : SBL_CMD1_STATE;
break;
case SBL_CMD1_STATE:
sbSte = SBL_CMD2_STATE;
break;
case SBL_CMD2_STATE:
sbSte = (sbLen == 0) ? SBL_FCS_STATE : SBL_DATA_STATE;
break;
case SBL_DATA_STATE:
if (++sbIdx == sbLen)
{
sbSte = SBL_FCS_STATE;
}
break;
case SBL_FCS_STATE:
sbSte = SBL_SOF_STATE;
if ((sbFcs == ch) && ((sbBuf[SBL_CMD1_STATE] & RPC_SUBSYSTEM_MASK) == RPC_SYS_BOOT))
{
sblExec(sbBuf + SBL_LEN_STATE);
return sblResp(); // Send the SB response setup in the sbBuf passed to sblExec().
}
break;
default:
break;
}
sbFcs ^= ch;
return FALSE;
}
/**************************************************************************************************
* @fn main
*
* @brief ISR for the reset vector.
*
* input parameters
*
* None.
*
* output parameters
*
* None.
*
* @return None.
**************************************************************************************************
*/
void main(void)
{
sblInit();
if (sbImgValid())
{
if (sblWait())
{
HalUARTUnInitUSB();
// Simulate a reset for the Application code by an absolute jump to location 0x2000.
asm("LJMP 0x2000\n");
HAL_SYSTEM_RESET();
}
}
sblExec();
HAL_SYSTEM_RESET();
}
/**************************************************************************************************
* @fn main
*
* @brief C-code main functionality.
*
* input parameters
*
* None.
*
* output parameters
*
* None.
*
* @return None.
**************************************************************************************************
*/
void main(void)
{
/* Setup the clock startup sequence to 32 MHz external
* osc and 32k sourced from external oscillator
*/
IOCPadConfigSet(GPIO_D_BASE, 0xC0, IOC_OVERRIDE_ANA);
SysCtrlClockSet(OSC_32KHZ, false, SYS_CTRL_SYSDIV_32MHZ);
/* Check if clock is stable */
HAL_CLOCK_STABLE();
/* Turn on cache prefetch mode */
PREFETCH_ENABLE();
/* Boot Loader code execute */
sblExec();
/* Code should not come here */
HAL_SYSTEM_RESET();
}
/**************************************************************************************************
* @fn main
*
* @brief C-code main functionality.
*
* input parameters
*
* None.
*
* output parameters
*
* None.
*
* @return None.
**************************************************************************************************
*/
void main(void)
{
vddWait(VDD_MIN_RUN);
HAL_BOARD_INIT();
// make sure the DMA channel is selected before we attempt to
// to write anything to flash.
sblInit();
if (sbImgValid())
{
if ((SB_UART_DELAY == 0) || ResetWasWatchDog)
{
sblJump();
}
sblWait();
}
vddWait(VDD_MIN_NV);
sblExec();
HAL_SYSTEM_RESET();
}
/**************************************************************************************************
* @fn main
*
* @brief C-code main functionality.
*
* input parameters
*
* None.
*
* output parameters
*
* None.
*
* @return None.
**************************************************************************************************
*/
void main(void)
{
vddWait(VDD_MIN_RUN);
HAL_BOARD_INIT();
if (sbImgValid())
{
if ((SB_UART_DELAY == 0) || ResetWasWatchDog)
{
sblJump();
}
sblInit();
sblWait();
}
else
{
sblInit();
}
vddWait(VDD_MIN_NV);
sblExec();
HAL_SYSTEM_RESET();
}
/**************************************************************************************************
* @fn main
*
* @brief C-code main functionality.
*
* input parameters
*
* None.
*
* output parameters
*
* None.
*
* @return None.
**************************************************************************************************
*/
void main(void)
{
uint8 time_spent_validating;
uint8 bootloaderForcedByMainApp = FALSE;
uint32 mainAppCommandLocal = mainAppCommand;
vddWait(VDD_MIN_RUN);
mainAppCommand = MAIN_APP_CMD_NONE;
if (mainAppCommandLocal == MAIN_APP_CMD_FORCE_BOOTLOADER)
{
bootloaderForcedByMainApp = TRUE;
}
else if ((mainAppCommandLocal == MAIN_APP_CMD_PASS_THROUGH) || ((SLEEPSTA & LRESET) == RESETWD))
{
// If reset due to WatchDog Timer - Transfer control to the main application immediately.
// WatchDog Timer reset causes the hardware to disconnect the USB. Withought this jump here,
// the SBL code will try to initiaize the CDC too early, which causes undesired behavior on the host
// (e.g. on beaglebone black - the host gets stuck)
asm("LJMP 0x2000\n");
}
sblInit(bootloaderForcedByMainApp);
HAL_TURN_ON_LED1();
HAL_TURN_ON_LED2();
if ((!bootloaderForcedByMainApp) && (sbImgValid(&time_spent_validating)))
{
HAL_TURN_OFF_LED2();
if (sblWait(SBL_WAIT_TIME > time_spent_validating ? SBL_WAIT_TIME - time_spent_validating : 0))
{
HAL_TURN_OFF_LED1();
sbReportState(SB_STATE_EXECUTING_IMAGE);
while(sblIsUartTxPending())
{
sbUartPoll();
}
SLEEP(0x2600); //Give the last bytes in the HW TX fifo (if any) enough time to be transmitted
while (SB1_PRESS || SB2_PRESS);
sblUnInit();
// Simulate a reset for the Application code by an absolute jump to location 0x2000.
asm("LJMP 0x2000\n");
}
}
HAL_TURN_OFF_LED1();
HAL_TURN_ON_LED2();
vddWait(VDD_MIN_NV);
sblExec();
sblUnInit();
asm("LJMP 0x2000\n");
}
