status_code_t nvm_set_security_bit(void)
{
if (!flash_enable_security_bit()) {
return ERR_INVALID_ARG;
}
return STATUS_OK;
}
status_code_t nvm_set_security_bit(void)
{
#if SAM4L
/*To Do */
#else
if (!flash_enable_security_bit()) {
return ERR_INVALID_ARG;
}
#endif
return STATUS_OK;
}
/**
* Perform initialization and tests on flash.
*/
int main(void)
{
uint32_t ul_test_page_addr = TEST_PAGE_ADDRESS;
uint32_t *pul_test_page = (uint32_t *) ul_test_page_addr;
uint32_t ul_rc;
uint32_t ul_idx;
uint8_t uc_key;
uint32_t ul_page_buffer[IFLASH_PAGE_SIZE / sizeof(uint32_t)];
/* Initialize the SAM system */
sysclk_init();
board_init();
/* Initialize the console uart */
configure_console();
/* Output example information */
puts(STRING_HEADER);
/* Initialize flash: 6 wait states for flash writing. */
ul_rc = flash_init(FLASH_ACCESS_MODE_128, 6);
if (ul_rc != FLASH_RC_OK) {
printf("-F- Initialization error %lu\n\r", (UL)ul_rc);
return 0;
}
/* Unlock page */
printf("-I- Unlocking test page: 0x%08x\r\n", ul_test_page_addr);
ul_rc = flash_unlock(ul_test_page_addr,
ul_test_page_addr + IFLASH_PAGE_SIZE - 1, 0, 0);
if (ul_rc != FLASH_RC_OK) {
printf("-F- Unlock error %lu\n\r", (UL)ul_rc);
return 0;
}
/* Write page */
printf("-I- Writing test page with walking bit pattern\n\r");
for (ul_idx = 0; ul_idx < (IFLASH_PAGE_SIZE / 4); ul_idx++) {
ul_page_buffer[ul_idx] = 1 << (ul_idx % 32);
}
#if (SAM4S || SAM4E || SAM4N || SAM4C || SAM4CP || SAMG || SAM4CM || \
SAMV71 || SAMV70 || SAMS70 || SAME70)
/* The EWP command is not supported for non-8KByte sectors in all devices
* SAM4 series, so an erase command is requried before the write operation.
*/
ul_rc = flash_erase_sector(ul_test_page_addr);
if (ul_rc != FLASH_RC_OK) {
printf("-F- Flash programming error %lu\n\r", (UL)ul_rc);
return 0;
}
ul_rc = flash_write(ul_test_page_addr, ul_page_buffer,
IFLASH_PAGE_SIZE, 0);
#else
ul_rc = flash_write(ul_test_page_addr, ul_page_buffer,
IFLASH_PAGE_SIZE, 1);
#endif
if (ul_rc != FLASH_RC_OK) {
printf("-F- Flash programming error %lu\n\r", (UL)ul_rc);
return 0;
}
/* Validate page */
printf("-I- Checking page contents ");
for (ul_idx = 0; ul_idx < (IFLASH_PAGE_SIZE / 4); ul_idx++) {
printf(".");
if (pul_test_page[ul_idx] != ul_page_buffer[ul_idx]) {
printf("\n\r-F- data error\n\r");
return 0;
}
}
printf("OK\n\r");
#if (SAM4S || SAM4E || SAM4N || SAM4C || SAM4CP || SAMG || SAM4CM || \
SAMV71 || SAMV70 || SAMS70 || SAME70)
/* The EWP command is not supported for non-8KByte sectors in some SAM4
* series, so an erase command is requried before the write operation.
*/
ul_rc = flash_erase_sector(ul_test_page_addr);
if (ul_rc != FLASH_RC_OK) {
printf("-F- Flash programming error %lu\n\r", (UL)ul_rc);
return 0;
}
#endif
/* Lock page */
printf("-I- Locking test page\n\r");
ul_rc = flash_lock(ul_test_page_addr,
ul_test_page_addr + IFLASH_PAGE_SIZE - 1, 0, 0);
if (ul_rc != FLASH_RC_OK) {
printf("-F- Flash locking error %lu\n\r", (UL)ul_rc);
return 0;
}
/* Check if the associated region is locked. */
printf("-I- Try to program the locked page ...\n\r");
ul_rc = flash_write(ul_test_page_addr, ul_page_buffer,
IFLASH_PAGE_SIZE,
#if (SAM4S || SAM4E || SAM4N || SAM4C || SAMG || SAM4CP || SAM4CM || \
SAMV71 || SAMV70 || SAMS70 || SAME70)
0);
#else
1);
#endif
if (ul_rc != FLASH_RC_OK) {
printf("-I- The page to be programmed belongs to locked region. Error %lu\n\r",
(UL)ul_rc);
}
printf("-I- Please open Segger's JMem program \n\r");
printf("-I- Read memory at address 0x%08lx to check contents\n\r",
(UL)ul_test_page_addr);
printf("-I- Press any key to continue...\n\r");
scanf("%c", (char *)&uc_key);
printf("-I- Good job!\n\r"
"-I- Now set the security bit \n\r"
"-I- Press any key to continue to see what happened...\n\r");
scanf("%c", (char *)&uc_key);
/* Set security bit */
printf("-I- Setting security bit \n\r");
ul_rc = flash_enable_security_bit();
if (ul_rc != FLASH_RC_OK) {
printf("-F- Set security bit error %lu\n\r", (UL)ul_rc);
}
printf("-I- All tests done\n\r");
while (1) {
/* Do nothing */
}
}
