故障分析 |
所抓取的打印信息如下 Boot- DRAM Channel A Calibration. HW Byte 0 : DQS(25 ~ 52), Size 28, Set 35, HW_Set 40. HW Byte 1 : DQS(15 ~ 47), Size 33, Set 28, HW_Set 34. HW Byte 2 : DQS(21 ~ 53), Size 33, Set 34, HW_Set 40. HW Byte 3 : DQS(19 ~ 55), Size 37, Set 34, HW_Set 39. DRAM A Size = 512 Mbytes. DRAM Channel B Calibration. HW Byte 4 : DQS(21 ~ 56), Size 36, Set 35, HW_Set 39. HW Byte 5 : DQS(21 ~ 48), Size 28, Set 31, HW_Set 39. HW Byte 6 : DQS(20 ~ 50), Size 31, Set 32, HW_Set 38. HW Byte 7 : DQS(14 ~ 48), Size 35, Set 28, HW_Set 33. DRAM B Size = 512 Mbytes. Boot Start Pmain 0x0000a000 Nand boot NID=0x9551d3ec LZHS addr:0x00100040 LZHS size:0x000bdfa0 LZHS checksum:0x000000a4 Boot Start Lmain PCIE_PreInit, reset gpio 从打印信息上可以看出DDR与主芯片之间的通讯正常,问题在引导程序上面,可升级引导程序解决问题
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