请教大家，uboot在norlash，如果sd卡不装可以正常启动，装上sd卡后，就卡在Starting kernel
U-Boot 2017.01-rc2 (Mar 10 2020 - 22:45:31 -0700) Allwinner Technology
CPU: Allwinner V3s (SUN8I 1681)
Model: Lichee Pi Zero
DRAM: 64 MiB
MMC: SUNXI SD/MMC: 0
SF: Detected w25q128bv with page size 256 Bytes, erase size 4 KiB, total 16 MiB
*** Warning - bad CRC, using default environment
In: serial@01c28000
Out: serial@01c28000
Err: serial@01c28000
Net: No ethernet found.
starting USB...
No controllers found
Hit any key to stop autoboot: 0
** File not found zImage **
** File not found sun8i-v3s-licheepi-zero-dock.dtb **
## Flattened Device Tree blob at 41800000
Booting using the fdt blob at 0x41800000
Loading Device Tree to 42df9000, end 42dff454 ... OK
Starting kernel ...
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TF卡格式化了，应该不会有这些文件了
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