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<TITLE>Question about SMC serial port on MPC8270 in u-boot </TITLE>
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<P><SPAN LANG="zh-cn"><FONT COLOR="#000000" SIZE=2 FACE="Arial">Dear All:</FONT></SPAN>
<BR><SPAN LANG="zh-cn"><FONT COLOR="#000000" SIZE=2 FACE="Arial"> When i port the u-boot 1.1.3 on my MPC8270 board, the serial port has the following question:</FONT></SPAN>
<BR><SPAN LANG="zh-cn"><FONT COLOR="#000000" SIZE=2 FACE="Arial"> 1. the Dual port ram cannot be revised manually, but can be revised by the u-boot code. What's the problem?</FONT></SPAN>
<BR><SPAN LANG="zh-cn"><FONT COLOR="#000000" SIZE=2 FACE="Arial"> 2. the serial_putc() in serial_smc.c is loop forever on "while (tbdf->cbd_sc & BD_SC_READY);". How to slove the bug?</FONT></SPAN></P>
<P><SPAN LANG="zh-cn"><FONT COLOR="#000000" SIZE=2 FACE="Arial"> 3. the speed.c calc the wrong cpm, cpu, brg_clk, I had hard coded the right cpm, cpu, brg_clk values. But the "m8260_cpm_setbrg()" is still wrong? Why?</FONT></SPAN></P>
<P><SPAN LANG="zh-cn"><FONT COLOR="#000000" SIZE=2 FACE="Arial"> the registers are all right.</FONT></SPAN>
<BR><SPAN LANG="zh-cn"><FONT COLOR="#000000" SIZE=2 FACE="Arial"> 4. Can you tell me the ALL items about the SMC1 UART output? I had checked almost all the concerned SMC registers, IO ports,</FONT></SPAN></P>
<P><SPAN LANG="zh-cn"><FONT COLOR="#000000" SIZE=2 FACE="Arial"> data structures, they all seems right, but the UART cannot work. How could I find the problem? </FONT></SPAN>
<BR><SPAN LANG="zh-cn"><FONT COLOR="#000000" SIZE=2 FACE="Arial"> thanks a lot ! </FONT></SPAN>
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