nf.c File Reference

#include "compiler.h"
#include "conf_nf.h"
#include "nf.h"
#include "gpio.h"
#include "smc.h"

Macros
#define	_NF_C_

Functions
bool	nf_check_status (void)
	Check the status of the selected device. More...
U8	nf_check_type (U8 nb_dev)
	Tests the Nand Flash configuration. More...
void	nf_copy_back_init (U32 page_addr)
	Prepare a copy-back session. More...
void	nf_erase_block (U32 page_addr, U8 force_erase)
	Erases a block. More...
U8	nf_get_freq (void)
	returns the frequency supported by the selected NF. More...
void	nf_init (U32 hsb_f_hz)
	Initializes the Nand Flash Controller and low level driver. More...
void	nf_mark_bad_block (U32 page_addr)
	Mark a block as 'invalid' by clearing it entirely. More...
void	nf_open_page_read (U32 page_addr, U16 byte_addr)
	Opens a page for read. More...
void	nf_open_page_write (U32 page_addr, U16 byte_addr)
	Opens a page for write. More...
void	nf_protect (void)
	Protect all the flashes. More...
U32	nf_read_id (U8 read_id_cmd, U8 nf_num)
	Read the ID of the Nand-Flash. More...
void	nf_reset_nands (U8 nb_dev)
	Reset all the NF devices. More...
void	nf_unprotect (void)
	unprotect all the flashes More...
void	nf_wait_busy (void)
	Tests the true busy. More...
U8	nfc_detect (void)
	Read the ID of the Nand-Flash and update the global variable. More...
static bool	nfc_nf_is_ready (void)
	Check the status Ready/Busy of the Nand Flash. More...
void	nfc_read_spare_byte (U8 _MEM_TYPE_SLOW_ *p_byte, U8 n_byte, U32 page_addr)
	Reads the number spare bytes specified and stores them in a array. More...

#define _NF_C_

U8 nfc_detect

(

void

)

Read the ID of the Nand-Flash and update the global variable.

Returns

: nf index of listing "nf_listing" otherwise : NO_NF_CONNECTED or NF_UNKNOW

References St_nf_conf::cache_program, St_nf_conf::ce_low, St_nf_id::conf, St_nf_conf::copy_back_cont, St_nf_conf::copy_back_discont, St_nf_conf::dfc_nfc_clock, g_cache_program, g_ce_low, g_clock_dfc_nfc, g_copy_back_cont, g_copy_back_discont, g_dev_id, g_dev_maker, g_n_blocks, g_n_row_cycles, g_n_zones, g_shift_block_page, g_shift_page_byte, MSB0, MSB1, St_nf_link_id_block::nb_zones, nf_force_CE, nf_init(), nf_list_conf, nf_list_id, nf_list_link_id_block, NF_MAX_DEVICES, nf_read_id(), NF_READ_ID_CMD, nf_reset_nands(), and nfc_nf_is_ready().

static bool nfc_nf_is_ready ( void  )

static

Check the status Ready/Busy of the Nand Flash.

Returns

bool true -> The Nand Flash is ready and connected false -> The Nand Flash must be no connected (timeout)

Referenced by nfc_detect().

void nfc_read_spare_byte	(	U8 _MEM_TYPE_SLOW_ *	p_byte,
		U8	n_byte,
		U32	page_addr
	)

Reads the number spare bytes specified and stores them in a array.

Parameters

p_byte	pointer on the array in which are stored the spare bytes.
n_byte	number of spare bytes to read.
page_addr	absolute page address of the block.

Precondition

nf_init() should have been called before. The NF device should have been selected before with nf_select( id ).

References i, nf_open_page_read(), nf_rd_data(), and NF_SPARE_POS.