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问题描述： vxWorks下TFFS文件系统创建好后，单任务写日志，一段时间后出现异常。具体见下。因为已经搞了一个多月了，仍旧没有解决问题，压力很大，特请求大家给予指导！我在这里先谢谢了！贴的内容比较多，是怕有疏漏的地方，请高手不辞辛苦，能够耐心指导。 开发环境： vxWorks5.5+MPC852,flash芯片为JS28F128的norflash 空间安排： flash大小16M(0x1000000),基地址0xfe000000,前0.5M（0x80000）做为boot,后面的做为flash文件系统 测试过程描述： 创建一个文本文件，通过一个任务不断的写日志信息，通常写了几百k（部分时候几M）后发现写日志任务出现exception，并且SUSPEND了，shell命令运行“ls”时也被阻塞SUSPEND的，错误信息包括但不全部为下： 1. i0x1ecd030 (tApCtrlLogRecord): disk cache error: device 1ee2ed8 block 84 errno c0006, disk removed while writing data, possible data loss 0x1ecd030 (tApCtrlLogRecord): disk cache error: device 1ee2ed8 block 7281 errno c0006, disk removed while writing data, possible data loss 2. 0x1ea6288 (tApCtrlLogRecord): dosFsLib.c : Problem finding volume data, trying to use the next block as boot block. 0x1ea6288 (tApCtrlLogRecord): dosFsLib.c : Malformed boot sector. Offset 0, value 0. 通过反汇编后，发现错误地方在logical2physicl()附近，复位后有时会文件系统错误，表现为 1. boot无法挂载文件系统，系统启动不了 2. 针对上次写入错误的那个文件日志，再次打开写入时，任务又异常，若打开写入前先删除此文件，再重新打开写入，则正常，但写入一段时间又出现如上问题。即错误的文件不能够再读写，否则又引起错误，删除后正常。 分析提问： 已经排除了应用层任务，写文件导致文件系统错误，看异常点是翻译层问题，但是翻译层为vxWorks提供的，不应该出现问题，那就是配置socket或MTD层时出现问题，查了很多网上资料，也测试了参数配置，问题依旧。因为该代码主要是公司以前人员留下的，我对这方面也是第一次搞，我已经搞了一个月也没结果，请大家帮助或给指明查找方向，谢谢！ 主要配置部分代码： #define FLASH_BASE_ADRS 0xFE000000 /* Flash memory base address */ #define FLASH_SIZE 0x01000000L /* Flash memory size */ （1）sysPhysMemDesc定义： PHYS_MEM_DESC sysPhysMemDesc [] = { ... { (void *) FLASH_BASE_ADRS, (void *) FLASH_BASE_ADRS, FLASH_SIZE, /* 16 m - I28F128 window */ VM_STATE_MASK_VALID | VM_STATE_MASK_WRITABLE | VM_STATE_MASK_CACHEABLE | VM_STATE_MASK_GUARDED, VM_STATE_VALID | VM_STATE_WRITABLE | VM_STATE_CACHEABLE_NOT | VM_STATE_GUARDED }, ... } （2）格式化部分，能够正常格式化 STATUS sysTffsFormat (void) { STATUS status; tffsDevFormatParams params = { #define HALF_FORMAT /* lower 0.5MB for bootimage, upper 1.5MB for TFFS */ #ifdef HALF_FORMAT {0x80000l, 99, 1, 0x0, NULL, {0,0,0,0}, NULL, 2, 0, NULL}, #else {0x000000l, 99, 1, 0x0, NULL, {0,0,0,0}, NULL, 2, 0, NULL}, #endif /* HALF_FORMAT */ /*FTL_FORMAT*/ FTL_FORMAT }; /* we assume that the drive number 0 is SIMM */ status = tffsDevFormat (0, (int)¶ms); return (status); } （3）文件系统mount也正常，可以通过FTP看到文件系统和创建的目录，tffsShow可以正常显示 0: socket=SIMM: type=0x8918, unitSize=0x20000, mediaSize=0x1000000 SOCKET层代码： LOCAL void simmRegister (void) { FLSocket vol = flSocketOf (noOfDrives); tffsSocket[noOfDrives] = "SIMM"; vol.window.baseAddress = FLASH_BASE_ADRS 12; vol.cardDetected = simmCardDetected; vol.VccOn = simmVccOn; vol.VccOff = simmVccOff; vol.initSocket = simmInitSocket; vol.setWindow = simmSetWindow; vol.setMappingContext = simmSetMappingContext; vol.getAndClearCardChangeIndicator = simmGetAndClearCardChangeIndicator; vol.writeProtected = simmWriteProtected; noOfDrives++; } LOCAL void simmSetWindow ( FLSocket vol /* pointer identifying drive */ ) { /* Physical base as a 4K page */ vol.window.baseAddress = FLASH_BASE_ADRS 12; flSetWindowSize (&vol, FLASH_SIZE 12); } MTD层代码： FLStatus i28f016Identify(FLFlash vol) { FlashWPTR flashPtr; flSetWindowBusWidth(vol.socket,16);/* use 16-bits */ flSetWindowSpeed(vol.socket,120); /* 120 nsec. */ flSetWindowSize(vol.socket,2); /* 8 KBytes */ flashPtr = (FlashWPTR) flMap(vol.socket,0); vol.noOfChips = 0; flashPtr[0] = READ_ID; if (flashPtr[0] == 0x0089 && flashPtr[1] == 0x0018) { /* Word mode */ vol.type = I28F016_FLASH; vol.interleaving = 1; flashPtr[0] = READ_ARRAY; } else { /* Use standard identification routine to detect byte-mode */ flIntelIdentify(&vol, NULL,0); if (vol.interleaving == 1) vol.type = NOT_FLASH; /* We cannot handle byte-mode interleaving-1 */ } if (vol.type == I28F016_FLASH) { vol.chipSize = FLASH_SIZE;/*gxf_flash*/----这句改为FLASH_SIZE-0x80000(512K),仍旧错误 vol.erasableBlockSize = 0x20000L * vol.interleaving; checkStatus(vol.interleaving == 1 ? i28f016WordSize(&vol) : flIntelSize(&vol, NULL,0)); /* Register our flash handlers */ vol.write = i28f016Write; vol.erase = i28f016Erase; return flOK; } else { return flUnknownMedia; /* not ours */ } 写函数： static FLStatus i28f016Write(FLFlash vol, CardAddress address, const void FAR1 *buffer, int length, FLBoolean overwrite) { /* Set timeout ot 5 seconds from now */ unsigned long writeTimeout = flMsecCounter + 5000; FLStatus status; int i; FlashWPTR flashWPtr; int wLength; if (flWriteProtected(vol.socket)) return flWriteProtect; if ((length & 1) || (address & 1)) /* Only write words on word-boundary */ return flBadParameter; flashWPtr = (FlashWPTR) vol.map(&vol, address,length); wLength = length1; while (wLength = 1) { *flashWPtr = SETUP_WRITE; *flashWPtr = *(const unsigned short FAR1 *)buffer; wLength--; buffer = (const unsigned short FAR1 *) buffer + 1; /* bBuffer++; */ flashWPtr++; while (!(flashWPtr[-1] & WSM_READY) && flMsecCounter