//! \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 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 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;
}
// 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;
U32 i, j;
// ECCHRS options.
static const ecchrs_options_t ECCHRS_OPTIONS =
{
.typecorrect = ECCHRS_TYPECORRECT_4_BIT,
.pagesize = ECCHRS_PAGESIZE_4_BIT_2112_W
};
// switch to oscillator 0
pcl_switch_to_osc(PCL_OSC0, FOSC0, OSC0_STARTUP);
// init debug serial interface
init_dbg_rs232(FOSC0);
nf_init(FOSC0); // init the nand flash driver with the correct HSB frequency
nf_unprotect();
print_dbg("\r\nECCHRS example using Nand Flash.\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);
print_dbg("\tCPU, HSB is at 12000000Mhz.\r\n");
print_dbg("\tPBA, PBB is at 12000000Mhz.\r\n");
print_dbg("\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);
print_dbg("\t\tNF");
print_dbg_hex(i_dev);
print_dbg(" [Maker=");
print_dbg_hex(maker_id);
print_dbg("] [Device=");
print_dbg_hex(device_id);
print_dbg("]\r\n");
if( maker_id==M_ID_MICRON )
{
print_dbg("\t\t Micron chip");
if( device_id==0xDA ){
print_dbg("- MT29F2G08AACWP device\r\n");
}
else
{
print_dbg("- *** Error: unexpected chip detected. Please check the board settings and hardware.\r\n");
return -1;
}
}
else
{
print_dbg("\t\t *** Error: unexpected chip detected. Please check the board settings and hardware.\r\n");
return -1;
}
}
// Looking for valid blocks for the test.
for( i_dev=0 ; i_dev<NF_N_DEVICES ; 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 valid.
print_dbg("\tValid block found (");
print_dbg_ulong(i_block);
print_dbg(") on NF ");
print_dbg_hex(i_dev);
print_dbg("\r\n");
valid_block_found[i_dev]= true;
valid_block_addr[i_dev] = i_block;
break;
}
}
}
for( i_dev=0 ; i_dev<NF_N_DEVICES ; i_dev++ )
if( !valid_block_found[i_dev] )
{
print_dbg("Error: no valid blocks found.\r\n");
return 0;
}
print_dbg("\tECCHRS IP ver ");
print_dbg_ulong(ecchrs->version);
print_dbg("(");
print_dbg_hex(ecchrs->version);
print_dbg(")");
print_dbg("\r\n");
// Work with NF 0 from now...
nf_select(0);
// Setup the ECCHRS.
ecchrs_init(&AVR32_ECCHRS, &ECCHRS_OPTIONS);
// Ensures that the block is erased for the test.
print_dbg("\tErasing a free block for the test.\r\n");
nf_erase_block(nf_block_2_page(valid_block_addr[0]), false);
// Reset the ECCHRS state machine.
ecchrs_reset(&AVR32_ECCHRS);
// Program a simple patterns in the first page.
print_dbg("\tProgramming the first page with a simple pattern.\r\n");
nf_open_page_write( nf_block_2_page(valid_block_addr[0]), 0);
for ( i = 0; i < 2048/2; i++ )
{
U16 val = i;
nf_wr_data(MSB(val));
nf_wr_data(LSB(val));
}
// Extract the ECCs and store them at the end of the page.
// [2054; 2063]: codeword 0:9
// [2070; 2079]: codeword 10:19
// [2086; 2095]: codeword 20:29
// [2102; 2111]: codeword 30:39
// Since we use the Random Data Output command, we need to freeze
// the ECCHRS in order to keep our ECC codewords unchanged.
print_dbg("\tExtracting the ECCHRS codewords and store them in the page.\r\n");
ecchrs_freeze(&AVR32_ECCHRS); // not needed if ECCHRS reaches the end of page.
for ( i=0 ; i<4 ; i++ )
{
U16 offset = 2048+6+16*i;
nf_wr_cmd(NF_RANDOM_DATA_INPUT_CMD);
nf_wr_addr( LSB(offset) );
nf_wr_addr( MSB(offset) );
for ( j=0 ; j<10 ; j++ )
nf_wr_data( ecchrs_get_cw(&AVR32_ECCHRS, i*10+j) );
}
ecchrs_unfreeze(&AVR32_ECCHRS);
nf_wr_cmd(NF_PAGE_PROGRAM_CMD);
// Now let's test the ECC verification.
print_dbg("\tReading the first page.\r\n");
nf_open_page_read( nf_block_2_page(valid_block_addr[0]), 0);
for( i=0 ; i<2048 ; i++ )
nf_rd_data();
print_dbg("\tChecking if the data are valid thanks to the ECCHRS codewords.\r\n");
for ( i=0 ; i<4 ; i++ )
{
U16 offset = 2048+6+16*i;
ecchrs_freeze(&AVR32_ECCHRS);
nf_wr_cmd(NF_RANDOM_READ_CMD_C1);
nf_wr_addr( LSB(offset) );
nf_wr_addr( MSB(offset) );
nf_wr_cmd(NF_RANDOM_READ_CMD_C2);
ecchrs_unfreeze(&AVR32_ECCHRS);
for ( j=0 ; j<10 ; j++ )
nf_rd_data();
}
// Check if there is any errors after the read of the page.
i = ecchrs_4bit_check_error(&AVR32_ECCHRS);
print_dbg("\tSR1 is ");
print_dbg_ulong(i);
print_dbg("(");
print_dbg_hex(i);
print_dbg(")");
print_dbg("\r\n");
if(i&(15))
{
print_dbg("\tERROR: ECCHRS detects some errors in the sectors 1, 2, 3 or 4\r\n");
}
else
print_dbg("\tNo error detected.\r\n");
// Let the block free.
nf_erase_block(nf_block_2_page(valid_block_addr[0]), false);
return 0;
}
