[U-Boot] socfpga: mainline cannot boot linux

[Marek Vasut]

On Friday, November 07, 2014 at 12:54:14 AM, Dinh Nguyen wrote:
> On 11/06/2014 05:40 PM, Anatolij Gustschin wrote:
> > Hi Dinh,
> > 
> > On Thu, 6 Nov 2014 17:03:48 -0600
> > 
> > Dinh Nguyen <dinguyen at opensource.altera.com> wrote:
> >> Hi Marek,
> >> 
> >> Have you been able to successfully boot Linux using the mainline uboot?
> >> I cannot seem to be able to boot linux on the C5 SocDK.
> >> 
> >> It starts to boot linux, but then reboots after a bit back into u-boot.
> >> So I commented out #define CONFIG_HW_WATCHDOG in
> >> include/configs/socfpga_cyclone5.h. That helped so that I can look that
> >> __log_buf.
> >> I was able to trace it down that it was not able to get a tty console,
> >> because serial8250_console_setup() is failing at:
> >> 
> >> if (!port->iobase && !port->membase)
> >> 
> >> For reasons I haven't figured out yet, both port->iobase and
> >> port->membase are NULL.
> >> 
> >> So no debug console, but Linux is able to boot all the way to the point
> >> of tyring to mount a FS.
> >> 
> >> Perhaps some kind of memory setup issue? I've seen a thread where
> >> Chin-Liang was able to boot, but I don't know if he did any other
> >> tricks.
> >> 
> >> Just wondering if I'm missing a patch or something?
> > 
> > the issue could be the wrong console= argument on the kernel command
> > line. In the current socfpga_config5.h I see
> > 
> >   #define CONFIG_BOOTARGS         "console=ttyS0"
> >   __stringify(CONFIG_BAUDRATE)
> > 
> > A comma is missing after "console=ttyS0"
> > 
> > It should be
> > 
> >   #define CONFIG_BOOTARGS         "console=ttyS0,"
> >   __stringify(CONFIG_BAUDRATE)
> > 
> > Could you please test it? Thanks.
> 
> Yep, that was it! Thanks alot for seeing that.

Thanks for spotting this, I'll pick the patch for Anatolij.

Best regards,
Marek Vasut