nand.rar_flash_s3c2440 nand flash

/* support 512/page NAND Flash only */ #include <string.h> #include "def.h" #include "2440addr.h" #include "2440lib.h" #include "2440slib.h" #include "Nand.h" //suppport boot params #define GLOBAL_PARAMS #include "bootpara.h" #define EnNandFlash() (rNFCONT |= 1) #define DsNandFlash() (rNFCONT &= ~1) #define NFChipEn() (rNFCONT &= ~(1<<1)) #define NFChipDs() (rNFCONT |= (1<<1)) #define InitEcc() (rNFCONT |= (1<<4)) #define MEccUnlock() (rNFCONT &= ~(1<<5)) #define MEccLock() (rNFCONT |= (1<<5)) #define SEccUnlock() (rNFCONT &= ~(1<<6)) #define SEccLock() (rNFCONT |= (1<<6)) #define WrNFDat8(dat) (rNFDATA8 = (dat)) #define WrNFDat32(dat) (rNFDATA = (dat)) #define RdNFDat8() (rNFDATA8) //byte access #define RdNFDat32() (rNFDATA) //word access #define WrNFCmd(cmd) (rNFCMD = (cmd)) #define WrNFAddr(addr) (rNFADDR = (addr)) #define WrNFDat(dat) WrNFDat8(dat) #define RdNFDat() RdNFDat8() //for 8 bit nand flash, use byte access #define RdNFMEcc() (rNFMECC0) //for 8 bit nand flash, only use NFMECC0 #define RdNFSEcc() (rNFSECC) //for 8 bit nand flash, only use low 16 bits #define RdNFStat() (rNFSTAT) #define NFIsBusy() (!(rNFSTAT&1)) #define NFIsReady() (rNFSTAT&1) //#define WIAT_BUSY_HARD 1 //#define ER_BAD_BLK_TEST //#define WR_BAD_BLK_TEST #define READCMD0 0 #define READCMD1 1 #define READCMD2 0x50 #define ERASECMD0 0x60 #define ERASECMD1 0xd0 #define PROGCMD0 0x80 #define PROGCMD1 0x10 #define QUERYCMD 0x70 #define RdIDCMD 0x90 static U16 NandAddr; // HCLK=100Mhz #define TACLS 1//7 // 1-clk(0ns) #define TWRPH0 4//7 // 3-clk(25ns) #define TWRPH1 0//7 // 1-clk(10ns) //TACLS+TWRPH0+TWRPH1>=50ns static void InitNandCfg(void) { // for S3C2440 rNFCONF = (TACLS<<12)|(TWRPH0<<8)|(TWRPH1<<4)|(0<<0); // TACLS [14:12] CLE&ALE duration = HCLK*TACLS. // TWRPH0 [10:8] TWRPH0 duration = HCLK*(TWRPH0+1) // TWRPH1 [6:4] TWRPH1 duration = HCLK*(TWRPH1+1) // AdvFlash(R) [3] Advanced NAND, 0:256/512, 1:1024/2048 // PageSize(R) [2] NAND memory page size // when [3]==0, 0:256, 1:512 bytes/page. // when [3]==1, 0:1024, 1:2048 bytes/page. // AddrCycle(R) [1] NAND flash addr size // when [3]==0, 0:3-addr, 1:4-addr. // when [3]==1, 0:4-addr, 1:5-addr. // BusWidth(R/W) [0] NAND bus width. 0:8-bit, 1:16-bit. rNFCONT = (0<<13)|(0<<12)|(0<<10)|(0<<9)|(0<<8)|(1<<6)|(1<<5)|(1<<4)|(1<<1)|(1<<0); // Lock-tight [13] 0:Disable lock, 1:Enable lock. // Soft Lock [12] 0:Disable lock, 1:Enable lock. // EnablillegalAcINT[10] Illegal access interupt control. 0:Disable, 1:Enable // EnbRnBINT [9] RnB interrupt. 0:Disable, 1:Enable // RnB_TrandMode[8] RnB transition detection config. 0:Low to High, 1:High to Low // SpareECCLock [6] 0:Unlock, 1:Lock // MainECCLock [5] 0:Unlock, 1:Lock // InitECC(W) [4] 1:Init ECC decoder/encoder. // Reg_nCE [1] 0:nFCE=0, 1:nFCE=1. // NANDC Enable [0] operating mode. 0:Disable, 1:Enable. // rNFSTAT = 0; // Nand_Reset(); } #ifdef WIAT_BUSY_HARD #define WaitNFBusy() while(NFIsBusy()) #else static U32 WaitNFBusy(void) // R/B 未接好? { U8 stat; WrNFCmd(QUERYCMD); do { stat = RdNFDat(); //Uart_Printf("%x\n", stat); }while(!(stat&0x40)); WrNFCmd(READCMD0); return stat&1; } #endif static U32 ReadChipId(void) { U32 id; NFChipEn(); WrNFCmd(RdIDCMD); WrNFAddr(0); while(NFIsBusy()); id = RdNFDat()<<8; id |= RdNFDat(); NFChipDs(); return id; } static U16 ReadStatus(void) { U16 stat; NFChipEn(); WrNFCmd(QUERYCMD); stat = RdNFDat(); NFChipDs(); return stat; } static U32 EraseBlock(U32 addr) { U8 stat; addr &= ~0x1f; NFChipEn(); WrNFCmd(ERASECMD0); WrNFAddr(addr); WrNFAddr(addr>>8); if(NandAddr) WrNFAddr(addr>>16); WrNFCmd(ERASECMD1); stat = WaitNFBusy(); NFChipDs(); #ifdef ER_BAD_BLK_TEST if(!((addr+0xe0)&0xff)) stat = 1; //just for test bad block #endif Uart_Printf("Erase block 0x%x %s\n", addr, stat?"fail":"ok"); return stat; } //addr = page address static void ReadPage(U32 addr, U8 *buf) { U16 i; NFChipEn(); WrNFCmd(READCMD0); WrNFAddr(0); WrNFAddr(addr); WrNFAddr(addr>>8); if(NandAddr) WrNFAddr(addr>>16); InitEcc(); WaitNFBusy(); for(i=0; i<512; i++) buf[i] = RdNFDat(); NFChipDs(); } static U32 WritePage(U32 addr, U8 *buf) { U32 i, mecc; U8 stat, tmp[7]; NFChipEn(); WrNFCmd(PROGCMD0); WrNFAddr(0); WrNFAddr(addr); WrNFAddr(addr>>8); if(NandAddr) WrNFAddr(addr>>16); InitEcc(); //reset mecc and secc MEccUnlock(); for(i=0; i<512; i++) WrNFDat(buf[i]); MEccLock(); mecc = RdNFMEcc(); tmp[0] = mecc&0xff; tmp[1] = (mecc>>8)&0xff; tmp[2] = (mecc>>16)&0xff; tmp[3] = (mecc>>24)&0xff; tmp[5] = 0xff; //mark good block SEccUnlock(); WrNFDat(tmp[0]); WrNFDat(tmp[1]); WrNFDat(tmp[2]); WrNFDat(tmp[3]); SEccLock(); WrNFDat(tmp[4]); WrNFDat(tmp[5]); WrNFCmd(PROGCMD1); stat = WaitNFBusy(); NFChipDs(); #ifdef WR_BAD_BLK_TEST if((addr&0xff)==0x17) stat = 1; //just for test bad block #endif if(stat) Uart_Printf("Write nand flash 0x%x fail\n", addr); else { U8 RdDat[512]; ReadPage(addr, RdDat); for(i=0; i<512; i++) if(RdDat[i]!=buf[i]) { Uart_Printf("Check data at page 0x%x, offset 0x%x fail\n", addr, i); stat = 1; break; } } return stat; } static void MarkBadBlk(U32 addr) { addr &= ~0x1f; NFChipEn(); WrNFCmd(READCMD2); //point to area c WrNFCmd(PROGCMD0); WrNFAddr(4); //mark offset 4,5,6,7 WrNFAddr(addr); WrNFAddr(addr>>8); if(NandAddr) WrNFAddr(addr>>16); WrNFDat(0); //mark with 0 WrNFDat(0); WrNFDat(0); //mark with 0 WrNFDat(0); WrNFCmd(PROGCMD1); WaitNFBusy(); //needn't check return status WrNFCmd(READCMD0); //point to area a NFChipDs(); } static int CheckBadBlk(U32 addr) { U8 dat; addr &= ~0x1f; NFChipEn(); WrNFCmd(READCMD2); //point to area c WrNFAddr(5); //mark offset 4,5,6,7 WrNFAddr(addr); WrNFAddr(addr>>8); if(NandAddr) WrNFAddr(addr>>16); WaitNFBusy(); dat = RdNFDat(); WrNFCmd(READCMD0); //point to area a NFChipDs(); return (dat!=0xff); } /************************************************************/ struct Partition{ U32 offset; U32 size; char *name; }; static struct Partition NandPart[] = { {0, 0x00030000, "boot"}, //256K {0x00030000, 0x001d0000, "kernel"}, {0x00200000, 0x02000000, "rootfs"}, //30M {0x02000000, 0x02000000, "ext-fs1"}, //32M {0, 0 , 0} }; /* static void TestFunc(void) { U32 i; U8 buf[512]; if(EraseBlock(0x180)) return; for(i=0; i<512; i++) buf[i] = i; WritePage(0x180, buf); for(i=0; i<512; i++) buf[i] = 0; ReadPage(0x180, buf); for(i=0; i<512; i++) Uart_Printf("%4x", buf[i]); } */ static U32 StartPage, BlockCnt; extern U32 downloadAddress; extern U32 downloadFileSize; static int NandSelPart(char *info) { U16 i, max_sel; struct Partition *ptr = NandPart; Uart_Printf("Please select which region to %s : Esc to abort\n", info); for(i=0; ptr->size!=0; i++, ptr++) Uart_Printf("%d : offset 0x%-8x, size 0x%-8x [%s]\n", i, ptr->offset, ptr->size, ptr->name); max_sel = i; while(1) { i = Uart_Getch(); if(i==0x1b) return -1; if((i>='0')&&(i<(max_sel+'0'))) { i -= '0'; StartPage = NandPart[i].offset>>9; BlockCnt = NandPart[i].size>>14; return i; } } } static void WrFileToNF(void) { int nf_part, i ,size, skip_blks; U32 ram_addr; nf_part = NandSelPart("write"); if(nf_part<0) return; if(downloadFileSize>NandPart[nf_part].size) { Uart_Printf("Download file size is more large than selected partition size!!!\n"); // return; } Uart_Pri