/**
* Get boot region information
* \return 0 or 1.
*/
static uint32_t _app_boot_get(void)
{
uint32_t gpmvm_status = flash_is_gpnvm_set(2);
if (gpmvm_status == FLASH_RC_YES) {
return 1;
} else {
return 0;
}
}
/**
* \brief Clear the given GPNVM bit.
*
* \param ul_gpnvm GPNVM bit index.
*
* \return 0 if successful; otherwise returns an error code.
*/
uint32_t flash_clear_gpnvm(uint32_t ul_gpnvm)
{
if (ul_gpnvm >= GPNVM_NUM_MAX) {
return FLASH_RC_INVALID;
}
if (FLASH_RC_NO == flash_is_gpnvm_set(ul_gpnvm)) {
return FLASH_RC_OK;
}
if (EFC_RC_OK == efc_perform_command(EFC, EFC_FCMD_CGPB, ul_gpnvm)) {
return FLASH_RC_OK;
}
return FLASH_RC_ERROR;
}
/**
* \brief Compute the address of a flash by the given page and offset.
*
* \param p_efc Pointer to an EFC instance.
* \param us_page Page number.
* \param us_offset Byte offset inside page.
* \param pul_addr Computed address (optional).
*/
static void compute_address(Efc *p_efc, uint16_t us_page, uint16_t us_offset,
uint32_t *pul_addr)
{
uint32_t ul_addr;
/* Dual bank flash */
#ifdef EFC1
/* Compute address */
#if (SAM4SD16 || SAM4SD32 || SAM4C32)
uint32_t uc_gpnvm2;
uc_gpnvm2 = flash_is_gpnvm_set(2);
if (p_efc == EFC0) {
if(uc_gpnvm2 == FLASH_RC_YES) {
ul_addr = IFLASH1_ADDR + us_page * IFLASH_PAGE_SIZE + us_offset;
} else {
ul_addr = IFLASH0_ADDR + us_page * IFLASH_PAGE_SIZE + us_offset;
}
} else {
if(uc_gpnvm2 == FLASH_RC_YES) {
ul_addr = IFLASH0_ADDR + us_page * IFLASH_PAGE_SIZE + us_offset;
} else {
ul_addr = IFLASH1_ADDR + us_page * IFLASH_PAGE_SIZE + us_offset;
}
}
#else
ul_addr = (p_efc == EFC0) ?
IFLASH0_ADDR + us_page * IFLASH_PAGE_SIZE + us_offset :
IFLASH1_ADDR + us_page * IFLASH_PAGE_SIZE + us_offset;
#endif
/* One bank flash */
#else
/* avoid Cppcheck Warning */
UNUSED(p_efc);
/* Compute address */
ul_addr = IFLASH_ADDR + us_page * IFLASH_PAGE_SIZE + us_offset;
#endif
/* Store result */
if (pul_addr != NULL) {
*pul_addr = ul_addr;
}
}
/**
* \brief Check if the security bit is set or not.
*
* \retval 1 If the security bit is currently set.
* \retval 0 If the security bit is currently cleared.
*/
uint32_t flash_is_security_bit_enabled(void)
{
return flash_is_gpnvm_set(0);
}
//False = Currently set to boot from FLASH0, True = Set to boot from FLASH1 instead
bool DueFlashStorage::getGPNVMBootMode()
{
if (flash_is_gpnvm_set(2) == 0) return false;
return true;
}
/**
* \brief Translate the given flash address to page and offset values.
* \note pus_page and pus_offset must not be null in order to store the
* corresponding values.
*
* \param pp_efc Pointer to an EFC pointer.
* \param ul_addr Address to translate.
* \param pus_page The first page accessed.
* \param pus_offset Byte offset in the first page.
*/
static void translate_address(Efc **pp_efc, uint32_t ul_addr,
uint16_t *pus_page, uint16_t *pus_offset)
{
Efc *p_efc;
uint16_t us_page;
uint16_t us_offset;
#if (SAM3XA || SAM3U4)
if (ul_addr >= IFLASH1_ADDR) {
p_efc = EFC1;
us_page = (ul_addr - IFLASH1_ADDR) / IFLASH1_PAGE_SIZE;
us_offset = (ul_addr - IFLASH1_ADDR) % IFLASH1_PAGE_SIZE;
} else {
p_efc = EFC0;
us_page = (ul_addr - IFLASH0_ADDR) / IFLASH0_PAGE_SIZE;
us_offset = (ul_addr - IFLASH0_ADDR) % IFLASH0_PAGE_SIZE;
}
#elif (SAM4SD16 || SAM4SD32 || SAM4C32)
uint32_t uc_gpnvm2;
uc_gpnvm2 = flash_is_gpnvm_set(2);
if (ul_addr >= IFLASH1_ADDR) {
if(uc_gpnvm2 == FLASH_RC_YES) {
p_efc = EFC0;
} else {
p_efc = EFC1;
}
us_page = (ul_addr - IFLASH1_ADDR) / IFLASH1_PAGE_SIZE;
us_offset = (ul_addr - IFLASH1_ADDR) % IFLASH1_PAGE_SIZE;
} else {
if(uc_gpnvm2 == FLASH_RC_YES) {
p_efc = EFC1;
} else {
p_efc = EFC0;
}
us_page = (ul_addr - IFLASH0_ADDR) / IFLASH0_PAGE_SIZE;
us_offset = (ul_addr - IFLASH0_ADDR) % IFLASH0_PAGE_SIZE;
}
#elif (SAM3SD8)
p_efc = EFC;
us_page = (ul_addr - IFLASH0_ADDR) / IFLASH0_PAGE_SIZE;
us_offset = (ul_addr - IFLASH0_ADDR) % IFLASH0_PAGE_SIZE;
#else
Assert(ul_addr >= IFLASH_ADDR);
Assert(ul_addr <= (IFLASH_ADDR + IFLASH_SIZE));
p_efc = EFC;
us_page = (ul_addr - IFLASH_ADDR) / IFLASH_PAGE_SIZE;
us_offset = (ul_addr - IFLASH_ADDR) % IFLASH_PAGE_SIZE;
#endif
/* Store values */
if (pp_efc) {
*pp_efc = p_efc;
}
if (pus_page) {
*pus_page = us_page;
}
if (pus_offset) {
*pus_offset = us_offset;
}
}
