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 <title><![CDATA[uboot启动内核，不接串口中无法启动！急， ..]]></title>
 <link><![CDATA[http://www.aiothome.net/read.php?tid=5458]]></link>
 <description><![CDATA[Latest 20 replies of uboot启动内核，不接串口中无法启动！急， ..]]></description>
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 <description><![CDATA[好久没来了,就是RX悬空的原因,加入错误状态判断就好了


cpu/arm920t/s3c24x0/serial.c中加放
int serial_errstat (void)
{
&nbsp;&nbsp;&nbsp;&nbsp;S3C24X0_UART * const uart = S3C24X0_GetBase_UART(UART_NR);

&nbsp;&nbsp;&nbsp;&nbsp;return uart-&gt;UERSTAT&amp; 0xf;
}

修改common/main.c中的abortboot
&nbsp; ..]]></description>
 <link><![CDATA[http://www.aiothome.net/read.php?tid=5458#25875]]></link>
 <author><![CDATA[lnxseed3]]></author>
 <category><![CDATA[U-boot技术交流区]]></category>
 <pubdate><![CDATA[Wed, 21 Apr 2010 09:21:40 +0000]]></pubdate>
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 <title><![CDATA[]]></title>
 <description><![CDATA[楼主打印信息的串口是不是TTL悬空的，尝试将RX引脚拉高到高电平，怀疑是否启动时接收脚悬空导致ARM串口收到干扰数据。楼主记得把解决方法共享哦~]]></description>
 <link><![CDATA[http://www.aiothome.net/read.php?tid=5458#23604]]></link>
 <author><![CDATA[glz80]]></author>
 <category><![CDATA[U-boot技术交流区]]></category>
 <pubdate><![CDATA[Thu, 01 Apr 2010 06:11:29 +0000]]></pubdate>
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