內(nèi)存測試三步法(編輯修改稿)
2025-08-22 04:32 本頁面
【文章內(nèi)容簡介】 *)amp。(pattern[i]), pmem++)。/** Put a different pattern on the data lines: otherwise they* may float long enough to read back what we wrote.*//* 預(yù)防floating buses錯誤 */move64((unsigned long long *)amp。otherpattern, pmem)。move64(pmem, amp。temp64)。ifdef INJECT_DATA_ERRORStemp64 ^= 0x00008000。endifif (temp64 != pattern[i]){pathi = (pattern[i]32) amp。 0xffffffff。patlo = pattern[i] amp。 0xffffffff。hi = (temp6432) amp。 0xffffffff。lo = temp64 amp。 0xffffffff。post_log (Memory (date line) error at %08x, wrote %08x%08x, read %08x%08x !\n,pmem, pathi, patlo, hi, lo)。ret = 1。}}return ret。}/* 地址線檢測 */static int memory_post_addrline(ulong *testaddr, ulong *base, ulong size){ulong *target。ulong *end。ulong readback。ulong xor。int ret = 0。end = (ulong *)((ulong)base + size)。/* pointer arith! */xor = 0。for(xor = sizeof(ulong)。 xor 0。 xor = 1){/* 對測試的地址的某一根地址線的值翻轉(zhuǎn) */target = (ulong *)((ulong)testaddr ^ xor)。if((target = base) amp。amp。 (target end)){/* 由于target是testaddr某一根地址線的值翻轉(zhuǎn)得來 故testaddr != target,下面賦值操作后 應(yīng)有*testaddr != *target */*testaddr = ~*target。readback = *target。ifdef INJECT_ADDRESS_ERRORSif(xor == 0x00008000){readback = *testaddr。}endif /* 出現(xiàn)此種情況只有testaddr == target,即某根地址線翻轉(zhuǎn)無效 */if(readback == *testaddr){post_log (Memory (address line) error at %08x%08x, XOR value %08x !\n,testaddr, target, xor)。ret = 1。}}}return ret。}static int memory_post_test1 (unsigned long st
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