linux-kernel - RE: [PATCH] ARM: dts: Fix booting on Rinato market device

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Date:	Sat, 08 Nov 2014 19:16:54 +0900
From:	Kukjin Kim <kgene@...nel.org>
To:	'Krzysztof Kozlowski' <k.kozlowski@...sung.com>,
	'Chanwoo Choi' <cw00.choi@...sung.com>
Cc:	'Ben Dooks' <ben-linux@...ff.org>,
	'Rob Herring' <robh+dt@...nel.org>,
	'Pawel Moll' <pawel.moll@....com>,
	'Mark Rutland' <mark.rutland@....com>,
	'Ian Campbell' <ijc+devicetree@...lion.org.uk>,
	'Kumar Gala' <galak@...eaurora.org>,
	'Russell King' <linux@....linux.org.uk>,
	linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	'Kyungmin Park' <kyungmin.park@...sung.com>,
	'BartlomiejZolnierkiewicz' <b.zolnierkie@...sung.com>
Subject: RE: [PATCH] ARM: dts: Fix booting on Rinato market device

Krzysztof Kozlowski wrote:
> 
> On pią, 2014-11-07 at 20:50 +0900, Chanwoo Choi wrote:
> > Hi Krzysztof,
> >
> > On 11/07/2014 08:44 PM, Krzysztof Kozlowski wrote:
> > > The bootloader on market Rinato (Gear 2) device checks for revision in
> > > compatible field of DTB. If it is not present or lower than required
> > > then booting fails with: "Could not do normal boot. (no DTB found)".
> > >
> > > Log of bootloader in case of failure:
> > > h/w: revision  = 0x06
> > > h/w: schematic = SM-R380_Rev0.5_Final_0205
> > > date = 2000/01/01 12:00:21 (UTC)
> > > cmu_div:4, div:5, src_clk:800000000, pixel_clk:31860720
> > > load_kernel: loading boot image from 57344.. (BOOT)
> > > load_kernel: found zImage, size: 0x3267e8
> > > 0xbc Error!
> > > Verify_Binary_Signature: failed.
> > > pit_check_signature (BOOT) invalid.
> > > load_kernel: found custom kernel (ret:-2147483647)
> > >  No need to update kernel type.
> > > Detected board: samsung,rinato-rev06
> > > Could not do normal boot. (no DTB found)
> > > : Entering usb mode for SM-R380_EUR_XX (65535)..
> > >
> > > Add a "rev06" suffix to compatible to satisfy the bootloader.
> > >
> > > Signed-off-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
> > > ---
> > >  arch/arm/boot/dts/exynos3250-rinato.dts | 3 ++-
> > >  1 file changed, 2 insertions(+), 1 deletion(-)
> > >
> > > diff --git a/arch/arm/boot/dts/exynos3250-rinato.dts b/arch/arm/boot/dts/exynos3250-rinato.dts
> > > index 84380fa13e37..f72ba0a1d915 100644
> > > --- a/arch/arm/boot/dts/exynos3250-rinato.dts
> > > +++ b/arch/arm/boot/dts/exynos3250-rinato.dts
> > > @@ -18,7 +18,8 @@
> > >
> > >  / {
> > >  	model = "Samsung Rinato board";
> > > -	compatible = "samsung,rinato", "samsung,exynos3250", "samsung,exynos3";
> > > +	compatible = "samsung,rinato", "samsung,rinato-rev06",
> > > +			"samsung,exynos3250", "samsung,exynos3";
> >
> > I think it is wrong. The released bootloader from Samsung is not u-boot.
> > Instead, you have to update u-boot to support Exynos3250-basd Rinato board.
> 
> The bootloader on device also was not a u-boot. So the fix is for native
> bootloader delivered on device.
> 
> I do not insist that this is proper fix. It was just needed to boot the
> device with custom kernel.
> 
> Anyway, thanks for comments!
> 
Hi Krzysztof and Chanwoo,

So, we don’t need this to fix the problem Krzysztof said? OK.

- Kukjin

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