209 lines
6.6 KiB
C
209 lines
6.6 KiB
C
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/*----------------------------------------------------------------------------
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* ATMEL Microcontroller Software Support - ROUSSET -
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*----------------------------------------------------------------------------
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* The software is delivered "AS IS" without warranty or condition of any
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* kind, either express, implied or statutory. This includes without
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* limitation any warranty or condition with respect to merchantability or
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* fitness for any particular purpose, or against the infringements of
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* intellectual property rights of others.
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*----------------------------------------------------------------------------
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* File Name : dataflash.c
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* Object : High level functions for the dataflash
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* Creation : HIi 10/10/2003
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*----------------------------------------------------------------------------
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*/
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#include "config.h"
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#include "stdio.h"
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#include "dataflash.h"
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AT91S_DATAFLASH_INFO dataflash_info[CFG_MAX_DATAFLASH_BANKS];
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static AT91S_DataFlash DataFlashInst;
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int cs[][CFG_MAX_DATAFLASH_BANKS] = {
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{CFG_DATAFLASH_LOGIC_ADDR_CS0, 0}, /* Logical adress, CS */
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{CFG_DATAFLASH_LOGIC_ADDR_CS3, 3}
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};
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int AT91F_DataflashInit(void)
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{
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int i;
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int dfcode;
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int Nb_device = 0;
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AT91F_SpiInit();
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for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) {
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dataflash_info[i].id = 0;
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dataflash_info[i].Device.pages_number = 0;
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dfcode = AT91F_DataflashProbe (cs[i][1], &dataflash_info[i].Desc);
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switch (dfcode) {
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case AT45DB161:
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dataflash_info[i].Device.pages_number = 4096;
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dataflash_info[i].Device.pages_size = 528;
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dataflash_info[i].Device.page_offset = 10;
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dataflash_info[i].Device.byte_mask = 0x300;
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dataflash_info[i].Device.cs = cs[i][1];
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dataflash_info[i].Desc.DataFlash_state = IDLE;
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dataflash_info[i].logical_address = cs[i][0];
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dataflash_info[i].id = dfcode;
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Nb_device++;
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break;
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case AT45DB321:
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dataflash_info[i].Device.pages_number = 8192;
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dataflash_info[i].Device.pages_size = 528;
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dataflash_info[i].Device.page_offset = 10;
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dataflash_info[i].Device.byte_mask = 0x300;
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dataflash_info[i].Device.cs = cs[i][1];
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dataflash_info[i].Desc.DataFlash_state = IDLE;
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dataflash_info[i].logical_address = cs[i][0];
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dataflash_info[i].id = dfcode;
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Nb_device++;
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break;
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case AT45DB642:
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dataflash_info[i].Device.pages_number = 8192;
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dataflash_info[i].Device.pages_size = 1056;
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dataflash_info[i].Device.page_offset = 11;
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dataflash_info[i].Device.byte_mask = 0x700;
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dataflash_info[i].Device.cs = cs[i][1];
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dataflash_info[i].Desc.DataFlash_state = IDLE;
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dataflash_info[i].logical_address = cs[i][0];
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dataflash_info[i].id = dfcode;
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Nb_device++;
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break;
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case AT45DB128:
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dataflash_info[i].Device.pages_number = 16384;
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dataflash_info[i].Device.pages_size = 1056;
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dataflash_info[i].Device.page_offset = 11;
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dataflash_info[i].Device.byte_mask = 0x700;
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dataflash_info[i].Device.cs = cs[i][1];
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dataflash_info[i].Desc.DataFlash_state = IDLE;
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dataflash_info[i].logical_address = cs[i][0];
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dataflash_info[i].id = dfcode;
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Nb_device++;
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break;
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default:
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break;
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}
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}
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return (Nb_device);
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}
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void AT91F_DataflashPrintInfo(void)
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{
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int i;
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for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) {
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if (dataflash_info[i].id != 0) {
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printf ("DF:AT45DB");
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switch (dataflash_info[i].id) {
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case AT45DB161:
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printf ("161");
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break;
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case AT45DB321:
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printf ("321");
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break;
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case AT45DB642:
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printf ("642");
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break;
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case AT45DB128:
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printf ("128");
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break;
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}
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printf ("\n# PG: %6d\n"
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"PG SZ: %6d\n"
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"SZ=%8d bytes\n"
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"ADDR: %08X\n",
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(unsigned int) dataflash_info[i].Device.pages_number,
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(unsigned int) dataflash_info[i].Device.pages_size,
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(unsigned int) dataflash_info[i].Device.pages_number *
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dataflash_info[i].Device.pages_size,
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(unsigned int) dataflash_info[i].logical_address);
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}
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}
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}
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/*------------------------------------------------------------------------------*/
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/* Function Name : AT91F_DataflashSelect */
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/* Object : Select the correct device */
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/*------------------------------------------------------------------------------*/
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static AT91PS_DataFlash AT91F_DataflashSelect(AT91PS_DataFlash pFlash,
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unsigned int *addr)
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{
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char addr_valid = 0;
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int i;
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for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++)
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if ((*addr & 0xFF000000) == dataflash_info[i].logical_address) {
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addr_valid = 1;
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break;
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}
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if (!addr_valid) {
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pFlash = (AT91PS_DataFlash) 0;
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return pFlash;
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}
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pFlash->pDataFlashDesc = &(dataflash_info[i].Desc);
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pFlash->pDevice = &(dataflash_info[i].Device);
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*addr -= dataflash_info[i].logical_address;
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return (pFlash);
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}
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/*------------------------------------------------------------------------------*/
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/* Function Name : read_dataflash */
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/* Object : dataflash memory read */
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/*------------------------------------------------------------------------------*/
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int read_dataflash(unsigned long addr, unsigned long size, char *result)
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{
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unsigned int AddrToRead = addr;
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AT91PS_DataFlash pFlash = &DataFlashInst;
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pFlash = AT91F_DataflashSelect (pFlash, &AddrToRead);
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if (pFlash == 0)
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return -1;
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return (AT91F_DataFlashRead(pFlash, AddrToRead, size, result));
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}
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/*-----------------------------------------------------------------------------*/
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/* Function Name : write_dataflash */
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/* Object : write a block in dataflash */
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/*-----------------------------------------------------------------------------*/
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int write_dataflash(unsigned long addr_dest, unsigned int addr_src,
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unsigned int size)
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{
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unsigned int AddrToWrite = addr_dest;
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AT91PS_DataFlash pFlash = &DataFlashInst;
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pFlash = AT91F_DataflashSelect(pFlash, &AddrToWrite);
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if (AddrToWrite == -1)
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return -1;
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return AT91F_DataFlashWrite(pFlash, (unsigned char *) addr_src, AddrToWrite, size);
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}
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/*-----------------------------------------------------------------------------*/
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/* Function Name : erase_dataflash */
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/* Object : Erase entire dataflash */
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/*-----------------------------------------------------------------------------*/
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int erase_dataflash(unsigned long addr_dest)
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{
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unsigned int AddrToWrite = addr_dest;
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AT91PS_DataFlash pFlash = &DataFlashInst;
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pFlash = AT91F_DataflashSelect (pFlash, &AddrToWrite);
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if (AddrToWrite == -1)
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return -1;
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return AT91F_DataFlashErase(pFlash);
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}
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