Re: Getting serial console output on new imx7d tqma7 board UART4

From: Lars Pedersen <lapeddk@gmail.com>
To: Ahmad Fatoum <a.fatoum@pengutronix.de>
Cc: barebox@lists.infradead.org
Subject: Re: Getting serial console output on new imx7d tqma7 board UART4
Date: Wed, 5 Aug 2020 13:12:50 +0200	[thread overview]
Message-ID: <CAKd8=GvaxTV8AHwBaiTb-JG5yneeUX9SoW2=5j+QS9m=CG5reQ@mail.gmail.com> (raw)
In-Reply-To: <9097b4aa-05e4-2083-9a87-512b0f0cf2a2@pengutronix.de>

Hi. I also got it working with a single board compilation now.

You are correct that it is the CONFIG_RELOCATABLE that is the issue.
If I select this it works.

/Lars Pedersen

On Wed, 5 Aug 2020 at 11:48, Ahmad Fatoum <a.fatoum@pengutronix.de> wrote:
>
> On 8/5/20 11:37 AM, Lars Pedersen wrote:
> > Hi. I got both the EVK and our TQMa7d board working with using the
> > full imx_v7_defconfig! So that's progress :)
>
> Oh. Can you turn them off stepwise to see, which config option
> is missing? (If my suspicion below isn't true)
>
>
> > See my inline comments
>
> >> To make sure this does work as intended, I just built barebox with
> >> only barebox-freescale-mx7-sabresd.img selected and it works fine for me:
> >>
> >
> > What's the size of that image? I just retested and I can't get it
> > working when only the sabresd board is selected for compilation.
>
> 532K.
>
> >> Are you sure the board is strapped correctly to boot from SD?
> >
> > I got the board configuration as:
> >
> > SW3 = 10
> > SW2 = 00100000
>
> I skimmed through your config,
> -CONFIG_RELOCATABLE=y
> +# CONFIG_RELOCATABLE is not set
> CONFIG_TEXT_BASE=0x0
>
> Text base is ignored, when you are relocatable. If you aren't relocatable,
> you need a valid address as your text base. Why did you turn it off?

I didn't turn it off. It isn't selected by MACH_FREESCALE_MX7_SABRESD
so it gets turned off if only this board is used. It is selected by 6
other boards, which is the reason it works when compiling for all
boards.

 Symbol: RELOCATABLE [=y]
 Type  : bool
 Defined at common/Kconfig:336
   Prompt: generate relocatable barebox binary
   Depends on: PPC || ARM [=y]
   Location:
 (2) -> General Settings
 Selected by [y]:
   - MACH_CCMX51 [=y] && ARCH_IMX [=y] && IMX_MULTI_BOARDS [=y]
 Selected by [n]:
   - ARCH_BCM283X [=n] && <choice>
   - ARCH_TEGRA [=n] && <choice>
   - ARCH_ZYNQMP [=n] && <choice>
   - MACH_VEXPRESS [=n] && <choice>
   - ARCH_ZYNQ7000 [=n] && ARCH_ZYNQ [=n]

>
> Cheers,
> Ahmad
>
> --
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