?? flash.c
字號:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "flash.h"
#include "44b.h"
#include "def.h"
#include "44blib.h"
/* PC7 6 5 4 3 2 1 0 */
/* I I I I I I I I */
/* NC NC NC NC SMCALE SMCCLE SMCCE SMCRB*/
/* 00 00 00 00 01 01 01 00 */
extern void __RdPage528(U8 *); /*these two function are writed in ASM*/
extern void __WrPage528(U8 *);
U8 Verify_Buf[528];
unsigned int Check_Flash_Id(void)
{
int i;
unsigned int id;
FC_CMD;
Nand_IO = 0x90;
FC_ADDR;
Nand_IO = 0;
FC_DATA;
for(i=0;i<10;i++); //wait 100ns
id = Nand_IO<<8;
id += Nand_IO;
FC_INACTIVE;
return id;
}
void Flash_Reset() //flash reset
{
int i;
// rPDATC = rPDATC | WP; //write unprotect
FC_CMD;
Nand_IO = 0xff; //reset command
for (i=0;i<3000;i++); //delay
}
/********************************************************/
/*功能：擦除FLASH的1Block(對應文件系統為1Cluster) */
/* 每一個簇為16KB，因此KM29U128共有1024個簇 */
/*輸入：unsigned int cluster/block(需要擦除的Block Number)*/
/*返回：OK或FAIL */
/********************************************************/
unsigned char Erase_Cluster(unsigned int cluster)
{
unsigned int blockPage = (cluster<<5);
int i;
FC_CMD;
Nand_IO = 0x60;
FC_ADDR;
Nand_IO = blockPage & 0xff;
Nand_IO = (blockPage>>8) & 0xff;
for(i=0;i<2;i++); //tWC 50ns
FC_CMD;
Nand_IO = 0xd0;
for(i=0;i<3;i++);
FC_DATA;
WAITRB; //wait max 3ms
FC_CMD;
Nand_IO = 0x70;
FC_DATA;
if (Nand_IO & 0x1) //erase error
{
FC_INACTIVE;
return FAIL;
}
else
{
FC_INACTIVE;
return OK;
}
}
/********************************************************/
int VerifyPage(unsigned int block,unsigned int page,U8 *buffer)
{
ReadPage(block,page,Verify_Buf);
if(strncmp((char *)Verify_Buf,(char *)buffer,528)==0)
return 1;
else
return 0;
}
/*****************************************************************/
/*功能：讀取FLASH的某個Block中的1page數據 */
/* 在文件系統中，有如下對應關系：Block=Cluster */
/* Page =Sector */
/*輸入：unsigned int block,page,unsigned char *pPage(存放數據的地址)*/
/*****************************************************************/
void ReadPage(unsigned int block,unsigned int page,unsigned char *pPage)
{
int i;
unsigned int blockPage = (block<<5) + page;
FC_CMD;
Nand_IO = 0x00;
FC_ADDR;
Nand_IO = 0;
Nand_IO = blockPage & 0xff;
Nand_IO = (blockPage>>8) & 0xff;
for(i=0;i<3;i++);
FC_DATA;
WAITRB; //random access ,wait max. 10us
for(i=0;i<528;i++)
{*pPage++=Nand_IO;} //data input->as the same as _WrPage528()
// __RdPage528(pPage); //which is written with assemble in flash.s
FC_INACTIVE;
}
/*****************************************************************/
/*功能：向FLASH的某個Block中的1page寫入數據 */
/* 在文件系統中，有如下對應關系：Block=Cluster */
/* Page =Sector */
/*輸入：unsigned int block,page,unsigned char *pPage(存放數據的地址)*/
/*輸出：0:Fail;1:OK */
/*****************************************************************/
int WritePage(unsigned int block,unsigned int page,unsigned char *pPage)
{
unsigned int blockPage = (block<<5) + page;
int i;
U8 *Source; //the begin addr of data to write
Source=pPage;
FC_CMD;
Nand_IO = 0x80;
FC_ADDR;
Nand_IO = 0;
Nand_IO = blockPage & 0xff;
Nand_IO = (blockPage>>8) & 0xff;
FC_DATA;
for(i=0;i<528;i++)
{Nand_IO=*pPage++;} //data input->as the same as _WrPage528()
// __WrPage528(pPage); //which is written with assemble in flash.s
FC_CMD;
Nand_IO = 0x10;
for(i=0;i<10;i++); //twb=100ns. why is it 10? spec is false?
//No. It's because of LED of PE1.
WAITRB; //wait max 500us;
Nand_IO = 0x70;
FC_DATA;
for(i=0;i<3;i++); //twhr=60ns
if((Nand_IO & 0x1)) //
{
FC_INACTIVE;
return 0;
}
else
{
FC_INACTIVE;
pPage = Source;
#if (WRITEVERIFY==1)
return VerifyPage(block,page,pPage);
#else
return 1;
#endif
}
}
/*******************************************************************/
/*功能：顯示FLASH的數據 */
/* 整個16MBFLASH空間的劃分如下： */
/* Root：Cluster0 */
/* Application：Cluster1~1023 */
/********************************************************************/
void Flash_Tools(void)
{
unsigned char bbb[528];
unsigned int i,sector,cluster;
Flash_Reset();
if(Check_Flash_Id()==KM29U128_ID)
{
i = 0;
sector = 0;
cluster = 0;
Uart_Printf("\n* R(r)>>Point to Root zone(Cluster0) *");
Uart_Printf("\n* A(a)>>Point to Application zone(Cluster1~1023) *");
Uart_Printf("\n* C(c)>>Point to Next Cluster *");
Uart_Printf("\n* S(s)>>Point to Next Sector *");
Uart_Printf("\n* Q(q)>>Quit *");
Uart_Printf("\n*-----------------------------------------------------------------------*");
//Uart_Printf("\n*---------------------Boot Zone at Cluster %4d, Sector %2d--------------*",cluster,sector);
while(1)
{
char aa;
aa = Uart_Getch();
if (aa == 'q' || aa=='Q') break;
/*****
ReadPage(cluster,sector,&(bbb[0]));
Uart_Printf("\n*---------------------Cluster %4d, Sector %2d---------------------------*",cluster,sector);
for(i=0;i<528;i=i+16)
{
Uart_Printf("\nBYTE%4x:%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x",\
i,bbb[i],bbb[i+1],bbb[i+2],bbb[i+3],bbb[i+4],bbb[i+5],bbb[i+6],bbb[i+7],\
bbb[i+8],bbb[i+9],bbb[i+10],bbb[i+11],bbb[i+12],bbb[i+13],bbb[i+14],bbb[i+15]);
} ****/
//sector++;
if (sector>=32)//goto next cluster
{
cluster++;
sector = 0;
}
//aa = Uart_Getch();
//if (aa == 'q' || aa=='Q') break;
switch(aa)
{
case 'r':
case 'R':
cluster = 0;
sector = 0;
Uart_Printf("\n*---------------------Root Zone at Cluster %4d, Sector %2d--------------*",cluster,sector);
ReadPage(cluster,sector,&(bbb[0]));
for(i=0;i<528;i=i+16)
{
Uart_Printf("\nBYTE%4x:%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x",\
i,bbb[i],bbb[i+1],bbb[i+2],bbb[i+3],bbb[i+4],bbb[i+5],bbb[i+6],bbb[i+7],\
bbb[i+8],bbb[i+9],bbb[i+10],bbb[i+11],bbb[i+12],bbb[i+13],bbb[i+14],bbb[i+15]);
}
Uart_Printf("\n*---------------------Cluster %4d, Sector %2d---------------------------*",cluster,sector);
break;
case 'a':
case 'A':
cluster = 1;
sector = 0;
Uart_Printf("\n*---------------------Application Zone at Cluster %4d, Sector %2d-------*",cluster,sector);
ReadPage(cluster,sector,&(bbb[0]));
for(i=0;i<528;i=i+16)
{
Uart_Printf("\nBYTE%4x:%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x",\
i,bbb[i],bbb[i+1],bbb[i+2],bbb[i+3],bbb[i+4],bbb[i+5],bbb[i+6],bbb[i+7],\
bbb[i+8],bbb[i+9],bbb[i+10],bbb[i+11],bbb[i+12],bbb[i+13],bbb[i+14],bbb[i+15]);
}
Uart_Printf("\n*---------------------Cluster %4d, Sector %2d---------------------------*",cluster,sector);
break;
case 'c':
case 'C':
cluster ++;
if (cluster>=1024)
cluster = 0;
sector = 0;
Uart_Printf("\n*---------------------Cluster %4d, Sector %2d---------------------------*",cluster,sector);
ReadPage(cluster,sector,&(bbb[0]));
for(i=0;i<528;i=i+16)
{
Uart_Printf("\nBYTE%4x:%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x",\
i,bbb[i],bbb[i+1],bbb[i+2],bbb[i+3],bbb[i+4],bbb[i+5],bbb[i+6],bbb[i+7],\
bbb[i+8],bbb[i+9],bbb[i+10],bbb[i+11],bbb[i+12],bbb[i+13],bbb[i+14],bbb[i+15]);
}
Uart_Printf("\n*---------------------Cluster %4d, Sector %2d---------------------------*",cluster,sector);
break;
case 's':
case 'S':
sector++;
if (sector>=32)
{
sector = 0;
cluster ++;
if (cluster>=1024) sector = 0;
}
Uart_Printf("\n*---------------------Cluster %4d, Sector %2d---------------------------*",cluster,sector);
ReadPage(cluster,sector,&(bbb[0]));
for(i=0;i<528;i=i+16)
{
Uart_Printf("\nBYTE%4x:%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x%4x",\
i,bbb[i],bbb[i+1],bbb[i+2],bbb[i+3],bbb[i+4],bbb[i+5],bbb[i+6],bbb[i+7],\
bbb[i+8],bbb[i+9],bbb[i+10],bbb[i+11],bbb[i+12],bbb[i+13],bbb[i+14],bbb[i+15]);
}
Uart_Printf("\n*---------------------Cluster %4d, Sector %2d---------------------------*",cluster,sector);
break;
default:
Uart_Printf("\n* R(r)>>Point to Root zone(Cluster0) *");
Uart_Printf("\n* A(a)>>Point to Application zone(Cluster1~1023) *");
Uart_Printf("\n* C(c)>>Point to Next Cluster *");
Uart_Printf("\n* S(s)>>Point to Next Sector *");
Uart_Printf("\n* Q(q)>>Quit *");
Uart_Printf("\n*-----------------------------------------------------------------------*");
//Uart_Printf("\n*---------------------Boot Zone at Cluster %4d, Sector %2d--------------*",cluster,sector);
break;
}
}
}
else
{
Uart_Printf("\n* K9F2808 No Found.Please check your hardware! *");
Uart_Printf("\n*-----------------------------------------------------------------------*");
}
}
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