/**
* \brief Unlocks all the regions in the given address range. The actual unlock range is
* reported through two output parameters.
* \param start Start address of unlock range.
* \param end End address of unlock range.
* \param pActualStart Start address of the actual unlock range (optional).
* \param pActualEnd End address of the actual unlock range (optional).
* \return 0 if successful, otherwise returns an error code.
*/
extern uint32_t FLASHD_Unlock( uint32_t start, uint32_t end, uint32_t *pActualStart, uint32_t *pActualEnd )
{
Efc* pEfc ;
uint32_t actualStart, actualEnd ;
uint16_t startPage, endPage ;
uint32_t dwError ;
uint16_t numPagesInRegion = IFLASH_LOCK_REGION_SIZE / IFLASH_PAGE_SIZE;
/* Compute actual unlock range and store it */
ComputeLockRange(start, end, &actualStart, &actualEnd);
if ( pActualStart != NULL )
{
*pActualStart = actualStart ;
}
if ( pActualEnd != NULL )
{
*pActualEnd = actualEnd ;
}
/* Compute page numbers */
EFC_TranslateAddress( &pEfc, actualStart, &startPage, 0 ) ;
EFC_TranslateAddress( 0, actualEnd, &endPage, 0 ) ;
/* Unlock all pages */
while ( startPage < endPage )
{
dwError = EFC_PerformCommand( pEfc, EFC_FCMD_CLB, startPage, _dwUseIAP ) ;
if ( dwError )
{
return dwError ;
}
startPage += numPagesInRegion ;
}
return 0 ;
}
//------------------------------------------------------------------------------
/// Unlocks all the regions in the given address range. The actual unlock range is
/// reported through two output parameters.
/// Returns 0 if successful; otherwise returns an error code.
/// \param start Start address of unlock range.
/// \param end End address of unlock range.
/// \param pActualStart Start address of the actual unlock range (optional).
/// \param pActualEnd End address of the actual unlock range (optional).
//------------------------------------------------------------------------------
unsigned char FLASHD_Unlock(
unsigned int start,
unsigned int end,
unsigned int *pActualStart,
unsigned int *pActualEnd)
{
AT91S_EFC *pStartEfc, *pEndEfc, *pEfc;
unsigned int actualStart, actualEnd;
unsigned short startPage, endPage;
unsigned char error;
unsigned short numPagesInRegion = AT91C_IFLASH_LOCK_REGION_SIZE / AT91C_IFLASH_PAGE_SIZE;
// Compute actual unlock range and store it
ComputeLockRange(start, end, &actualStart, &actualEnd);
if (pActualStart) {
*pActualStart = actualStart;
}
if (pActualEnd) {
*pActualEnd = actualEnd;
}
// Compute page numbers
EFC_TranslateAddress(&pStartEfc, actualStart, &startPage, 0);
EFC_TranslateAddress(&pEndEfc, actualEnd, &endPage, 0);
// Unlock all pages
// If there is an EFC crossover, unlock all pages from first EFC
#if defined(AT91C_BASE_EFC1)
if (pStartEfc != pEndEfc) {
while (startPage < (AT91C_IFLASH_NB_OF_PAGES / 2)) {
error = EFC_PerformCommand(pStartEfc, AT91C_MC_FCMD_UNLOCK, startPage);
if (error) {
return error;
}
startPage += numPagesInRegion;
}
startPage = 0;
}
#endif
pEfc = pEndEfc;
// Unlock remaining pages
while (startPage < endPage) {
error = EFC_PerformCommand(pEfc, AT91C_MC_FCMD_UNLOCK, startPage);
if (error) {
return error;
}
startPage += numPagesInRegion;
}
return 0;
}
//------------------------------------------------------------------------------
/// Unlocks all the regions in the given address range. The actual unlock range is
/// reported through two output parameters.
/// Returns 0 if successful; otherwise returns an error code.
/// \param start Start address of unlock range.
/// \param end End address of unlock range.
/// \param pActualStart Start address of the actual unlock range (optional).
/// \param pActualEnd End address of the actual unlock range (optional).
//------------------------------------------------------------------------------
unsigned char FLASHD_Unlock(
unsigned int start,
unsigned int end,
unsigned int *pActualStart,
unsigned int *pActualEnd)
{
AT91S_EFC *pEfc;
unsigned int actualStart, actualEnd;
unsigned short startPage, endPage;
unsigned char error;
unsigned short numPagesInRegion = AT91C_IFLASH_LOCK_REGION_SIZE / AT91C_IFLASH_PAGE_SIZE;
// Compute actual unlock range and store it
ComputeLockRange(start, end, &actualStart, &actualEnd);
if (pActualStart) {
*pActualStart = actualStart;
}
if (pActualEnd) {
*pActualEnd = actualEnd;
}
// Compute page numbers
EFC_TranslateAddress(&pEfc, actualStart, &startPage, 0);
EFC_TranslateAddress(0, actualEnd, &endPage, 0);
// Unlock all pages
while (startPage < endPage) {
error = EFC_PerformCommand(pEfc, AT91C_EFC_FCMD_CLB, startPage);
if (error) {
return error;
}
startPage += numPagesInRegion;
}
return 0;
}
