Shengzhou,
Can you investigate this message on T2080QDS (see log below)? Looks like some issue with NAND flash. It doesn't happen on T4240QDS.
York
U-Boot 2016.07-00067-gb8e5997 (Jul 14 2016 - 09:58:11 -0700)
CPU0: T2080E, Version: 1.1, (0x85380011) Core: e6500, Version: 2.0, (0x80400120) Clock Configuration: CPU0:1800 MHz, CPU1:1800 MHz, CPU2:1800 MHz, CPU3:1800 MHz, CCB:600 MHz, DDR:933.333 MHz (1866.667 MT/s data rate) (Asynchronous), IFC:150 MHz FMAN1: 700 MHz QMAN: 300 MHz PME: 600 MHz L1: D-cache 32 KiB enabled I-cache 32 KiB enabled Reset Configuration Word (RCW): 00000000: 0c070012 0e000000 00000000 00000000 00000010: 6c2d0002 00000000 ec027000 c1000000 00000020: 00000000 00000000 00000000 000307fc 00000030: 00000000 00000000 00000000 00000004 Board: T2080QDS, Sys ID: 0x28, Board Arch: V1, Board Version: A, boot from vBank4 FPGA: v11 (T1040QDS_2014_0318_1724), build 317 on Tue Mar 18 21:24:26 2014 SERDES Reference Clocks: SD1_CLK1=156.25MHZ, SD1_CLK2=100.00MHz SD2_CLK1=100.00MHz, SD2_CLK2=100.00MHz I2C: ready SPI: ready DRAM: Initializing....using SPD Detected UDIMM 6 GiB left unmapped 8 GiB (DDR3, 64-bit, CL=13, ECC on) DDR Chip-Select Interleaving Mode: CS0+CS1 Flash: 128 MiB L2: 2 MiB enabled Corenet Platform Cache: 512 KiB enabled Using SERDES1 Protocol: 108 (0x6c) Using SERDES2 Protocol: 45 (0x2d) SRIO1: enabled SRIO2: enabled SEC0: RNG instantiated NAND: fsl_ifc_read_byte beyond end of buffer fsl_ifc_read_byte beyond end of buffer fsl_ifc_read_byte beyond end of buffer fsl_ifc_read_byte beyond end of buffer fsl_ifc_read_byte beyond end of buffer fsl_ifc_read_byte beyond end of buffer fsl_ifc_read_byte beyond end of buffer fsl_ifc_read_byte beyond end of buffer fsl_ifc_read_byte beyond end of buffer fsl_ifc_read_byte beyond end of buffer fsl_ifc_read_byte beyond end of buffer fsl_ifc_read_byte beyond end of buffer fsl_ifc_read_byte beyond end of buffer fsl_ifc_read_byte beyond end of buffer fsl_ifc_read_byte beyond end of buffer fsl_ifc_read_byte beyond end of buffer fsl_ifc_read_byte beyond end of buffer fsl_ifc_read_byte beyond end of buffer fsl_ifc_read_byte beyond end of buffer fsl_ifc_read_byte beyond end of buffer