nand.rar_源码

//----------------------------------------------------------------------------- // \file test_nand.c // \brief implementation of OMAP-L138 nand test. // //----------------------------------------------------------------------------- #include "stdio.h" #include "types.h" #include "evmomapl138.h" #include "evmomapl138_timer.h" #include "evmomapl138_nand.h" #include "test_nand.h" //----------------------------------------------------------------------------- // Private Defines and Macros //----------------------------------------------------------------------------- // block/page that should be beyond anything used by u-boot. #define NAND_SAFE_BLOCK 1//(16) #define NAND_SAFE_PAGE (0) // size of test buffers. #define MAX_BUFFER_SIZE (NAND_PAGE_SIZE) //----------------------------------------------------------------------------- // Static Variable Declarations //----------------------------------------------------------------------------- static uint8_t tx_buffer[MAX_BUFFER_SIZE]; static uint8_t rx_buffer[MAX_BUFFER_SIZE]; //----------------------------------------------------------------------------- // Private Function Prototypes //----------------------------------------------------------------------------- static uint32_t verifyFlashData(uint32_t verify_block, uint32_t verify_page, uint8_t *ram_start_addr, uint8_t print_data); //----------------------------------------------------------------------------- // Public Function Definitions //----------------------------------------------------------------------------- //----------------------------------------------------------------------------- // \brief tests the nand. // // \param none. // // \return uint32_t //----------------------------------------------------------------------------- uint32_t TEST_nand(void) { uint32_t rtn; uint32_t block; uint32_t i; printf("------------------------------------------------------------\r\n"); printf(" OMAP-L138 NAND Test\r\n\r\n"); printf("Test Description\r\n"); printf("----------------\r\n"); printf("This code will configure the EMIFA to interface with NAND \r\n"); printf("flash on the UI board. Once configured, the code will read \r\n"); printf("and write a block of NAND. \r\n"); printf("------------------------------------------------------------\r\n\r\n"); //------------------------------------- // initialize the required bsl modules. //------------------------------------- printf("Initialize the Required BSL Modules\r\n"); printf("-----------------------------------\r\n\r\n"); rtn = NAND_init(); if (rtn != ERR_NO_ERROR) { printf("error initializing nand: %u\r\n", rtn); return (rtn); } //-------------- // execute test. //-------------- printf("\r\nExecute Test\r\n"); printf("------------\r\n\r\n"); printf("\r\n--- check bad block ---\r\n"); block = NAND_SAFE_BLOCK; while (NAND_isBadBlock(block) != ERR_NO_ERROR) { printf("\tblock: %u is bad!\r\n", block); block++; } printf("\tblock: %u good\r\n", block); printf("\r\n--- read/print a chunk of nand flash ---\r\n"); for (i = 0; i < 2; i++) { rtn = NAND_readPage(block, i, rx_buffer); if (rtn != ERR_NO_ERROR) { printf("\terror reading nand flash: %u\r\n", rtn); return (rtn); } else { UTIL_printMem(i, rx_buffer, MAX_BUFFER_SIZE, PRINT_HEADER); printf("\tnand flash read passed\r\n"); } } printf("\r\n--- erase a block of nand flash ---\r\n"); rtn = NAND_eraseBlock(block); if (rtn != ERR_NO_ERROR) { printf("\terror erasing nand flash: %u\r\n", rtn); return (rtn); } else { memset(tx_buffer, 0xFF, MAX_BUFFER_SIZE); USTIMER_delay(DELAY_1_SEC); rtn = verifyFlashData(block, NAND_SAFE_PAGE, tx_buffer, PRINT_NONE); if (ERR_NO_ERROR == rtn) { printf("\tnand flash erase passed\r\n"); } else { printf("\tnand flash erase failed\r\n"); return (rtn); } } printf("\r\n--- write a page of nand flash ---\r\n"); // populate tx buffer. for (i = 0; i < MAX_BUFFER_SIZE; i++) { tx_buffer[i] = (uint8_t)i; } rtn = NAND_writePage(block, NAND_SAFE_PAGE, tx_buffer); if (rtn != ERR_NO_ERROR) { printf("\terror writing nand flash: %u\r\n", rtn); return (rtn); } else { USTIMER_delay(DELAY_1_SEC); rtn = verifyFlashData(block, NAND_SAFE_PAGE, tx_buffer, PRINT_DURING_VERIFY); if (ERR_NO_ERROR == rtn) { printf("\tnand flash write passed\r\n"); } else { printf("\tnand flash write failed\r\n"); return (rtn); } } printf("\r\n--- erase a block of nand flash ---\r\n"); rtn = NAND_eraseBlock(block); if (rtn != ERR_NO_ERROR) { printf("\terror erasing nand flash: %u\r\n", rtn); return (rtn); } else { memset(tx_buffer, 0xFF, MAX_BUFFER_SIZE); USTIMER_delay(DELAY_1_SEC); rtn = verifyFlashData(block, NAND_SAFE_PAGE, tx_buffer, PRINT_NONE); if (ERR_NO_ERROR == rtn) { printf("\tnand flash erase passed\r\n"); } else { printf("\tnand flash erase failed\r\n"); return (rtn); } } printf("\r\n"); return (ERR_NO_ERROR); } //----------------------------------------------------------------------------- // Private Function Definitions //----------------------------------------------------------------------------- //----------------------------------------------------------------------------- // verifies nand flash write worked. //----------------------------------------------------------------------------- uint32_t verifyFlashData(uint32_t verify_block, uint32_t verify_page, uint8_t *ram_start_addr, uint8_t print_data) { uint32_t rtn = ERR_NO_ERROR; rtn = NAND_readPage(verify_block, verify_page, rx_buffer); if (rtn != ERR_NO_ERROR) { printf("\terror while reading from nand flash during verify"); return (rtn); } // print data if desired. if (print_data) { UTIL_printMem(verify_block, rx_buffer, MAX_BUFFER_SIZE, PRINT_HEADER); } if (memcmp(rx_buffer, ram_start_addr, MAX_BUFFER_SIZE) != 0) { rtn = ERR_FLASH_VERIFY; printf("\tdata does not match!"); } return (rtn); }