Nor-Flash-code.rar_NOR_nor flash_nor flash_spansion vhdl_写nor f

#include "config.h" #define ROM_BASE 0x80083000 //0x8009C000 #define INROM_BASE 0x80008000 //#define ROM_BASE 0x8007D000+0x8000 //test //0x800B5000+0x8000 //地址重定向到 //数据区+显示字库区 #define CMD_BASE 0x80000000 #define CMD_ADDR0 *((volatile uint16 *)(0x5555*2+CMD_BASE)) //+ROM_BASE #define CMD_ADDR1 *((volatile uint16 *)(0x2aaa*2+CMD_BASE)) //+ROM_BASE #define FLASH_MAXCYCLES 100000 //100ms uint8 write_flag; uint8 state; void CFIQueryExit(void) { CMD_ADDR0 = 0xaaaa; CMD_ADDR1 = 0x5555; CMD_ADDR0 = 0xf0f0; state &= 0xfc; } void SWPIDExit(void) { CMD_ADDR0 = 0xf0f0; state &= 0xfc; } void CFIQueryEntry(void) { if(state&1) { if(state&2) SWPIDExit(); else return; } CMD_ADDR0 = 0xaaaa; CMD_ADDR1 = 0x5555; CMD_ADDR0 = 0x9898; state |= 1; } void SWPIDEntry(void) { if(state&1) { if(state&2) return; else CFIQueryExit(); } CMD_ADDR0 = 0xaaaa; CMD_ADDR1 = 0x5555; CMD_ADDR0 = 0x9090; state |= 3; } uint32 GetFlashID(void) { uint32 i; SWPIDEntry(); i = *(uint16 *)(0+ROM_BASE); i |= (*(uint16 *)(2+ROM_BASE))<<16; SWPIDExit(); return i; } void GetFlashCFI(uint16 *DataPtr) { uint16 i; CFIQueryEntry(); for(i = 0x10; i<0x35; DataPtr++, i++) *DataPtr = *(uint16 *)(i*2+ROM_BASE); CFIQueryExit(); } void ChipErase(void) { if(state&1) { if(state&2) SWPIDExit(); else CFIQueryExit(); } CMD_ADDR0 = 0xaaaa; CMD_ADDR1 = 0x5555; CMD_ADDR0 = 0x8080; CMD_ADDR0 = 0xaaaa; CMD_ADDR1 = 0x5555; CMD_ADDR0 = 0x1010; while(1) { uint16 i; i = *((volatile uint16 *)0x6666)&0x40; if(i!=*((volatile uint16 *)0x6666)&0x40) //D6 == D6 continue; if(*((volatile uint16 *)0x8888)&0x80) break; //D7 == 1 } } */ uint8 SectorErase(uint32 sector) { uint16 i; uint32 FlashTimeOut; uint32 flashSIntEnble; /*if(state&1) { if(state&2) SWPIDExit(); else CFIQueryExit(); }*/ if(sector > (0x001ff000-(ROM_BASE-CMD_BASE))) { return 0; } flashSIntEnble = VICIntEnable; VICIntEnClr = 0xffffffff; if(write_flag == 1) { sector += ROM_BASE; CMD_ADDR0 = 0xaaaa; CMD_ADDR1 = 0x5555; CMD_ADDR0 = 0x8080; CMD_ADDR0 = 0xaaaa; CMD_ADDR1 = 0x5555; *(volatile uint16 *)sector = 0x3030; FlashTimeOut = 0; while (1) { FlashTimeOut++; if(FlashTimeOut > FLASH_MAXCYCLES) { VICIntEnable = flashSIntEnble; return 0; } i = *((volatile uint16 *)sector)&0x40; if(i!=*((volatile uint16 *)sector)&0x40) //D6 == D6 continue; if(*((volatile uint16 *)sector)&0x80) break; //D7 == 1 } } else { VICIntEnable = flashSIntEnble; return 0; } VICIntEnable = flashSIntEnble; return 1; } /******************************************************************* 函数名称: uint8 FlashProg(uint32 ProgStart, uint16 *DataPtr, uint32 WordCnt) 函数功能: 编程地址 相关调用: 入口参数: ProgStart:编程的起始位置 DataPtr:要编程的数据指针 WordCnt:要写的长度 返 回 值: 1 成功 0 失败 备 注: 创建信息: 修改信息: ********************************************************************/ uint8 FlashProg(uint32 ProgStart, uint16 *DataPtr, uint32 WordCnt) //wordcnt 表示字长 { uint16 i, j; uint32 FlashTimeOut; uint32 flashSIntEnble; if(write_flag == 1) { flashSIntEnble = VICIntEnable; VICIntEnClr = 0xffffffff; ProgStart += ROM_BASE; //只能偶地址 for( ; WordCnt; ProgStart+=2, DataPtr++, WordCnt--) { j = *DataPtr; CMD_ADDR0 = 0xaaaa; CMD_ADDR1 = 0x5555; CMD_ADDR0 = 0xa0a0; *(volatile uint16 *)ProgStart = j; FlashTimeOut = 0; while (1) { FlashTimeOut++; if(FlashTimeOut > FLASH_MAXCYCLES) { VICIntEnable = flashSIntEnble; return 0; } i = *(volatile uint16 *)ProgStart&0x40; if(i!=*(volatile uint16 *)ProgStart&0x40) //D6 == D6 continue; if((*(volatile uint16 *)ProgStart&0x80)==(j&0x80)) //D7 == D7 break; } } VICIntEnable = flashSIntEnble; return 1; } else { return 0; } } void FlashRead(unsigned int ReadStart, unsigned short *DataPtr, unsigned int Size) //size 表示要读出的字节长 { int i; // uint32 flashSIntEnble; // flashSIntEnble = VICIntEnable; // VICIntEnClr = 0xffffffff; ReadStart += ROM_BASE; for(i=0; i<Size/2; i++) { *(DataPtr+i) = *((unsigned short *)ReadStart+i); //只能偶地址 } // VICIntEnable = flashSIntEnble; } void InFlashRead(unsigned int ReadStart, unsigned short *DataPtr, unsigned int Size) //size 表示要读出的字节长 { int i; // uint32 flashSIntEnble; // flashSIntEnble = VICIntEnable; // VICIntEnClr = 0xffffffff; ReadStart += INROM_BASE; for(i=0; i<Size/2; i++) { *(DataPtr+i) = *((unsigned short *)ReadStart+i); //只能偶地址 } // VICIntEnable = flashSIntEnble; } /******************************************************************* 函数名称: uint8 SectorProg(uint32 begin, uint16 *data, uint32 size) 函数功能: 先擦后编程 相关调用: 入口参数: begin:编程的起始位置 DataPtr:要编程的数据指针 WordCnt:要写的长度 返 回 值: 1 成功 0 失败 备 注: 创建信息: 修改信息: ********************************************************************/ uint8 SectorProg(uint32 begin, uint16 *data, uint32 size) //size 表示要写入的字节长 { uint32 flashSIntEnble; uint32 tmp = 0x1000-(begin&0xfff); flashSIntEnble = VICIntEnable; VICIntEnClr = 0xffffffff; if(write_flag == 1) { if(tmp>size) tmp = size; for(; size;) { if(0 == SectorErase(begin&0xfffff000)) //4K Bytes boudary { VICIntEnable = flashSIntEnble; return 0; } if(0 == FlashProg(begin, data, tmp/2)) { VICIntEnable = flashSIntEnble; return 0; } size -= tmp; begin += tmp; data += tmp/2; tmp = (size>0x1000)?0x1000:size; } } else { VICIntEnable = flashSIntEnble; return 0; } VICIntEnable = flashSIntEnble; return 1; }