大师帮忙看看这个打印信息，问题出在什么地方

姜朝军

U-Boot 2011.06-00000-g188166d-dirty (Jul 07 2014 - 16:44:54)


CPU  :2018-2-12, 9:28:46
COM4, BaudRate:115200 bps, RXD: VGA->12,TXD: VGA->15, Printed by RT809F:

UART_115200

AutoDQS0-[3456789ABC][3456789AB]-[0x77]
BIST0-OK
AC_ON_U


U-Boot 2011.06-00000-g188166d-dirty (Jul 07 2014 - 16:44:54)


CPU  : Eagle
Board: BD_MST038B_10AHT_EAGLE


Hello U-Boot
DRAM:  247 MiB
SPI:  Flash is detected (0x0507, 0xC2, 0x20, 0x15)
MDrv_SERFLASH_GetInfo()
        u32AccessWidth = 1
        u32TotalSize   = 2097152
        u32SecNum      = 32
        u32SecSize     = 65536
spi_init: cfg_env_offset: 0x1e0000, at 551
uboot held at [4e700000~4f700000]
MMC:        eMMC 3727MB
Mstar-eMMC: 0, 7634936 blocks


UART BUS OFF!!

姜朝军

UART总线关闭。。。。。。。。。。。。怎么下手啊？？？？？

DongBeide

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