//! \brief Reset all the NF devices.
//!
//! \param nb_dev Number of device
//!
void nf_reset_nands( U8 nb_dev )
{
U8 i_dev;
for( i_dev=0 ; i_dev<nb_dev ; i_dev++ )
{
nf_select( i_dev );
// The wait is mandatory here since the function is used to wait any
// pending internal programming (Cache Program cmd).
nf_wait_busy();
nf_wr_cmd(NF_RESET_CMD);
nf_wait_busy();
}
}
//! \brief Prepare a copy-back session
//!
//! \param page_addr absolute source page address of the block
//!
//! \pre <code>nf_init()</code> should have been called before.
//!
void nf_copy_back_init( U32 page_addr )
{
nf_wait_busy();
nf_wr_cmd(NF_READ_CMD);
nf_wr_addr( 0 );
nf_wr_addr( 0 );
nf_wr_addr( LSB0(page_addr) );
nf_wr_addr( LSB1(page_addr) );
if ( 3==G_N_ROW_CYCLES )
{
nf_wr_addr( MSB1(page_addr) );
}
nf_wr_cmd(NF_COPY_BACK_CMD);
nf_wait_busy();
}
//! \brief Tests the Nand Flash configuration
//!
//! The function verifies that the connected NF is
//! properly declared in conf_nf.h.
//!
//! \param nb_dev number of device
//!
//! \return The number of device connected and corresponding
//! to NF identifiers.
//!
U8 nf_check_type( U8 nb_dev )
{
U8 i_dev;
//nf_init( nb_dev, 0 );
#warning Update for full support.
nf_reset_nands( nb_dev ); // Reset all the NF devices
// Test NF configuration
//
for( i_dev=0 ; i_dev<nb_dev ; i_dev++ )
{
nf_select( i_dev );
nf_wait_busy();
nf_force_CE();
nf_wr_cmd(NF_READ_ID_CMD);
nf_wr_addr( 0 );
if(( nf_rd_data()!=G_DEV_MAKER )
|| ( nf_rd_data()!=G_DEV_ID ))
{
Assert( false );
return i_dev;
}
if( G_CE_LOW )
{
// Activate CE Low if needed. This config is static
// and we supposed that it is no more deactivated in firmware.
nf_force_CE();
}
}
return nb_dev;
}
//! \brief Check the status of the selected device.
//!
//! \return a status:
//! PASS if the status is PASS;
//! FAIL if the status is FAIL
//!
bool nf_check_status( void )
{
U8 data;
nf_wait_busy(); // Send a status command and wait the completion of the last command
ecchrs_freeze(&AVR32_ECCHRS);
data = nf_rd_data();
ecchrs_unfreeze(&AVR32_ECCHRS);
if ( (data&NF_MASK_STATUS_FAIL)==0 ) { return PASS; } // I/O 0 Pass:0 Fail:1
else { return FAIL; }
}
//! \brief Protect all the flashes
//!
void nf_protect( void )
{
U32 i_dev;
// Wait until the end of any pending internal programming (Cache Program cmd).
for( i_dev=0 ; i_dev<NF_N_DEVICES ; i_dev++ )
{
nf_select( i_dev );
nf_wait_busy();
}
gpio_clr_gpio_pin(NF_WP_PIN);
}
//! \brief Launch a copy-back session
//!
//! \param page_addr absolute recipient page address of the block
//!
//! \pre <code>nf_init()</code> should have been called before.
//!
void nfc_copy_back_conf( U32 page_addr )
{
nf_wait_busy();
nf_wr_cmd(NF_RANDOM_DATA_INPUT_CMD);
nf_wr_addr( 0 );
nf_wr_addr( 0 );
nf_wr_addr( LSB0(page_addr) );
nf_wr_addr( LSB1(page_addr) );
if ( 3==G_N_ROW_CYCLES )
{
nf_wr_addr( MSB1(page_addr) );
}
nf_wr_cmd(NF_PAGE_PROGRAM_CMD);
}
//! \brief Erases a block.
//!
//! The erase will be done only if the block is not bad
//!
//! \param page_addr absolute page address of the block
//! \param force_erase true forces erasing, false erases the block (if not bad)
//!
//! \pre <code>nf_init()</code> should have been called before.
//! The device which holds the block to delete should have been selected
//! before with <code>nf_select( id )</code>.
//!
void nf_erase_block( U32 page_addr, U8 force_erase )
{
if( false==force_erase )
{
nf_open_page_read( page_addr, NF_SPARE_POS + G_OFST_BLK_STATUS );
if( (nf_rd_data()!=0xFF) ) return; // The block is bad. We can not erase it
}
nf_wait_busy();
nf_wr_cmd(NF_BLOCK_ERASE_CMD); // Auto Block Erase Setup
nf_wr_addr( LSB0(page_addr) );
nf_wr_addr( LSB1(page_addr) );
if ( 3==G_N_ROW_CYCLES )
{
nf_wr_addr( MSB1(page_addr) );
}
nf_wr_cmd(NF_BLOCK_ERASE_CONFIRM_CMD); // Erase command
}
//! \brief Read the ID of the Nand-Flash
//!
//! \param read_id_cmd Read_id command (NF_READ_ID_CMD, NF_READ_ID2_CMD)
//! \param nf_num Nand Flash number
//!
//! \return :
//! MSB0(ret) (MSB) is the Maker Code,
//! MSB1(ret) is the Device Id,
//! MSB2(ret) is 3rd byte returned,
//! MSB3(ret) (LSB) is 4th byte returned.
//!
//! \pre <code>nf_init()</code> should have been called before.
//!
U32 nf_read_id( U8 read_id_cmd, U8 nf_num )
{
U32 ret;
nf_select( nf_num );
nf_wait_busy();
//nf_force_CE();
nf_wr_cmd (read_id_cmd);
nf_wr_addr( 0 );
MSB0(ret)= nf_rd_data(); // Maker Code
MSB1(ret)= nf_rd_data(); // Device Id
MSB2(ret)= nf_rd_data(); // extra
MSB3(ret)= nf_rd_data(); // extra (Multi Plane Support)
//Nfc_action( NFC_ACT_ASSERT_CE, NFC_EXT_NOP);
return ret;
}
//! \brief Opens a page for read. The function will adapt the commands according to the
//! type of flash memory. The busy is polled at the end of the function.
//!
//! \param page_addr absolute page address of the block
//! \param byte_addr relative byte address inside the page.
//!
//! \pre <code>nf_init()</code> should have been called before.
//! The NF device should have been selected before with <code>nf_select( id )</code>.
//!
void nf_open_page_read( U32 page_addr, U16 byte_addr)
{
nf_wait_busy();
Nf_open_page_read( page_addr, byte_addr);
}
/*! \brief Main function.
*/
int main(void)
{
bool valid_block_found[NF_N_DEVICES];
U32 u32_nf_ids, i_dev, i_block;
U8 maker_id, device_id, byte3;
U32 i, time_s, time_e;
U8 data;
// start init
sysclk_init();
// Enable clock for require module
sysclk_enable_hsb_module(SYSCLK_EBI);
sysclk_enable_pbb_module(SYSCLK_SMC_REGS);
sysclk_enable_pbb_module(SYSCLK_HMATRIX);
// Initialize the board.
// The board-specific conf_board.h file contains the configuration of the board
// initialization.
board_init();
init_stdio();
#ifdef NF_ADDON // addon nandflash board for EVK1104 (not mounted by default)
// Unselect NF on board
gpio_set_gpio_pin(AVR32_PIN_PX53);
gpio_set_gpio_pin(AVR32_PIN_PX52);
#endif
nf_init(sysclk_get_cpu_hz());
nf_unprotect();
printf("\x0C");
printf("Nand Flash example.\r\n===================\r\n\r\n");
// - Simple test of the NF communication through the SMC.
// - Find all bad blocks.
// - Find a valid block for the remaining tests.
nf_reset_nands(NF_N_DEVICES);
printf("\tDetecting Nand Flash device(s).\r\n");
for( i_dev=0 ; i_dev<NF_N_DEVICES ; i_dev++ )
{
// Performs some init here...
valid_block_found[i_dev] = false;
// Test Maker and Device ids
u32_nf_ids = nf_read_id( NF_READ_ID_CMD, i_dev );
maker_id = MSB0(u32_nf_ids);
device_id = MSB1(u32_nf_ids);
byte3 = MSB3(u32_nf_ids);
printf("\t\tNF %ld: [Maker=0x%02x] [Device=0x%02x] [byte3=0x%02x]\r\n", i_dev, maker_id, device_id, byte3);
if( maker_id==M_ID_MICRON )
{
printf("\t\t Micron chip");
if( (device_id==0xDA) && (byte3==0x15) )
printf("- MT29F2G08AACWP device\r\n");
else if( (device_id==0xDA) && (byte3==0x95) )
printf("- MT29F2G08AADWP device\r\n");
else
{
printf("- *** Error: unexpected chip detected. Please check the board settings and hardware.\r\n");
return -1;
}
}
else
{
printf("\t\t *** Error: unexpected chip detected. Please check the board settings and hardware.\r\n");
return -1;
}
}
printf("\r\n\tTesting bad blocks.\r\n");
for( i_dev=0 ; i_dev<NF_N_DEVICES ; i_dev++ )
{
printf("\t\tNF %ld:\r\n", i_dev);
nf_select(i_dev);
for( i_block=0 ; i_block<G_N_BLOCKS ; i_block++ )
{
nf_open_page_read( nf_block_2_page(i_block), NF_SPARE_POS + G_OFST_BLK_STATUS );
if( (nf_rd_data()!=0xFF) )
{ // The block is bad.
printf("\t\t\tBlock %ld (0x%lx) is bad.\r\n", i_block, i_block);
}
else
{
if( !valid_block_found[i_dev] )
{
valid_block_found[i_dev]= true;
valid_block_addr[i_dev] = i_block;
printf("\t\t\tFirst valid block is at address %ld (0x%lx).\r\n", i_block, i_block);
}
}
}
}
for( i_dev=0 ; i_dev<NF_N_DEVICES ; i_dev++ )
if( !valid_block_found[i_dev] )
{
printf("Error %d\r\n", __LINE__);
return 0;
}
// - Ensure good NF behaviour through simple commands.
// Erase, Program, Read
// - Measures NF timings.
printf("\r\n\tMeasuring NF timings.\r\n");
for( i_dev=0 ; i_dev<NF_N_DEVICES ; i_dev++ )
{
printf("\t\tNF %ld:\r\n", i_dev);
nf_select(i_dev);
nf_erase_block( nf_block_2_page(valid_block_addr[0]), false);
time_s = Get_sys_count();
nf_wait_busy();
time_e = Get_sys_count();
// Verify that the block is erased.
nf_open_page_read( nf_block_2_page(valid_block_addr[0]), 0);
for( i= 0; i<2048 ; i++ )
{
data = nf_rd_data();
if( data!=0xFF )
{
printf("\tError: offset %d is not erased (read %d).\r\n", (U8)i, data);
return 0;
}
}
printf("\t\t\tTime to erase a page:%ld cy (%ld us)\r\n", time_e-time_s, cpu_cy_2_us(time_e-time_s, sysclk_get_cpu_hz()));
nf_open_page_write( nf_block_2_page(valid_block_addr[0]), 0);
for( i=0 ; i<2048 ; i++ )
nf_wr_data(i%256);
nf_wr_cmd(NF_PAGE_PROGRAM_CMD);
time_s = Get_sys_count();
nf_wait_busy();
time_e = Get_sys_count();
printf("\t\t\tTime to program a page:%ld cy (%ld us)\r\n", time_e-time_s, cpu_cy_2_us(time_e-time_s, sysclk_get_cpu_hz()));
time_s = Get_sys_count();
nf_open_page_read( nf_block_2_page(valid_block_addr[0]), 0);
time_e = Get_sys_count();
printf("\t\t\tTime to access to a page:%ld cy (%ld us)\r\n", time_e-time_s, cpu_cy_2_us(time_e-time_s, sysclk_get_cpu_hz()));
for( i= 0; i<2048 ; i++ )
{
data = nf_rd_data();
if( data!= i%256)
{
printf("\tError: expect %d, read %d\r\n", (U8)i, data);
return 0;
}
}
}
printf("Example DONE\r\n");
return 0;
}