Date: Mon, 28 May 2007 22:16:51 +0200 From: John Hay <jhay@meraka.org.za> To: Marcel Moolenaar <xcllnt@mac.com> Cc: freebsd-arm@freebsd.org Subject: Re: removing hardcoded uart vbase Message-ID: <20070528201651.GA84806@zibbi.meraka.csir.co.za> In-Reply-To: <E89527DC-9384-4A98-B17F-DED4F506AB39@mac.com> References: <20070528134607.GA67826@zibbi.meraka.csir.co.za> <E89527DC-9384-4A98-B17F-DED4F506AB39@mac.com>
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On Mon, May 28, 2007 at 12:10:58PM -0700, Marcel Moolenaar wrote: > > On May 28, 2007, at 6:46 AM, John Hay wrote: > > >To find the console, I just check for uart 0 in the hints. Is that > >good enough or should one also check for flags 0x10 like on sio > >devices? > > Typically, you set uart.hw.console to point to the console. Since > device numbers don't make sense, you define the console in terms of > hardware I/O location. For example: > uart.hw.console=io:0x3f8 > or > uart.hw.console=mm:0xfef04500 > > The uart.hw.console variable also allows you to specify baudrate, > stopbits, parity and the device class (ns8250, z8530, etc), which > hints do not. > > Hints are not recommended, unless you already have hints to > describe the hardware. In that case you can simply add: > hint.uart.0.flags=0x10 Well on the ixp425/avila we are moving to hints so that we can support different boards easier. For instance both the Avila and Pronghorn Metro boards use the same ixp425 cpu, which has 2 serial ports, but on the Avila they decided to bring one serial port out and on the Pronghorn, the other. :-) So shall I then just run through the hints of the known number of serial ports and look for the flags? > The patch looks good to me. Thanks. John -- John Hay -- John.Hay@meraka.csir.co.za / jhay@FreeBSD.org
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