STEPS FOR CHANGING THE DEFAULT SERIAL CONSOLE TO UART2

Andrew Jeffery andrew at aj.id.au
Tue Nov 17 10:29:32 AEDT 2020



On Tue, 17 Nov 2020, at 08:12, Joseph Reynolds wrote:
> On 11/16/20 2:30 PM, Radhika Pradeep wrote:
> > Hi , We have a BMC board based on the AST2520 with UART2 set as serial...
> > This Message Is From an External Sender
> > This message came from outside your organization.
> >
> > Hi ,
> >
> > We have a BMC board based on the AST2520 with UART2 set as serial 
> > console.We are using the openbmc codebase based on ast2500 with aspeed-g5.
> >
> > Since the default uart console is set to uart5 we are not able to get 
> > the serial console output.
> >
> > We just got a "mw" command used in uboot to change the register for 
> > UART5 TO IO2 routing which can only be done temporarily.
> >
> > Because we have the console connected to UART2 only. So we need to get 
> > the console output at UART2 each time the board boots up.
> >
> > Could you please provide us with the information on how to change 
> > routing permanently or the information about  the file which can be 
> > modified to change the register values permanently to get the uart2 
> > console output.?
> >
> 
> Did you see UARTs described here? 
> https://github.com/openbmc/docs/blob/master/architecture/interface-overview.md
> Which links to this?  https://github.com/openbmc/obmc-console
> 

The query is about the BMC console, not the host console, so obmc-console and 
the related documentation is not relevant here.

Andrew


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