/**************************************************************************************************
* @fn sblExec
*
* @brief Infinite SBL execute loop that jumps upon receiving a code enable.
*
* input parameters
*
* None.
*
* output parameters
*
* None.
*
* @return None.
**************************************************************************************************
*/
static void sblExec(void)
{
halUARTCfg_t uartConfig;
uartConfig.callBackFunc = sblRxCB;
HalUARTInitSPI();
if (bootloaderCommunicationRequested() || (!sbImgValid()))
{
while (1)
{
/* Read , parse, and respond to incoming bytes*/
sblRxCB(0, 0);
/* exit loop if image is successfully verified and enabled */
if (sblReset)
{
break;
}
}
}
/* Some delay to send final response to master */
for(uint32 i = 0; i < ENABLE_RSP_DELAY; i++)
{
ASM_NOP;
}
/* Some delay to send final response to master */
HalUARTUnInitSPI();
/* Jump to application image */
EnterNvmApplication((uint32)sbl_header_ptr->vectorTableAddress);
}
/**************************************************************************************************
* @fn main
*
* @brief This function is the C-main function invoked from the IAR reset ISR handler.
*
* input parameters
*
* None.
*
* output parameters
*
* None.
*
* @return None.
*/
void main(void)
{
uint32 ledgerPageAddr = FLASH_BASE + (HAL_IBM_LEDGER_PAGE * HAL_FLASH_PAGE_SIZE);
for (int pgCnt = 0; pgCnt < HAL_IBM_LEDGER_PAGE; pgCnt++, ledgerPageAddr -= HAL_FLASH_PAGE_SIZE)
{
ibm_ledger_t *pLedger = (ibm_ledger_t *)ledgerPageAddr;
int ledgerCnt = 0;
if (memcmp(pLedger, &LedgerPageSignature, sizeof(ibm_ledger_t)))
{
continue;
}
for (pLedger++; ledgerCnt < (HAL_FLASH_PAGE_SIZE/sizeof(ibm_ledger_t)); ledgerCnt++, pLedger++)
{
if ( (pLedger->imageCRC[0] == 0xFFFFFFFF) || // Not expected except first 2-step programming.
((pLedger->imageCRC[0] != 0) && (pLedger->imageCRC[0] == pLedger->imageCRC[1])) )
{
// Sanity check NVIC entries.
if ((pLedger->nvicJump[0] > 0x20004000) &&
(pLedger->nvicJump[0] < 0x27007FFF) &&
(pLedger->nvicJump[1] > FLASH_BASE) &&
(pLedger->nvicJump[1] < 0x0027EFFF))
{
EnterNvmApplication(pLedger->nvicJump[0], pLedger->nvicJump[1]);
}
}
}
}
SysCtrlDeepSleepSetting();
HAL_DISABLE_INTERRUPTS();
SysCtrlDeepSleep();
HAL_SYSTEM_RESET();
}
