From: Russell King - ARM Linux admin <linux@armlinux.org.uk>
To: Corentin Labbe <clabbe.montjoie@gmail.com>
Cc: kexec@lists.infradead.org, linux-kernel@vger.kernel.org,
mripard@kernel.org, wens@csie.org, ebiederm@xmission.com,
linux-arm-kernel@lists.infradead.org
Subject: Re: Trying to kexec on Allwinner A80
Date: Mon, 6 Apr 2020 10:37:29 +0100 [thread overview]
Message-ID: <20200406093729.GG25745@shell.armlinux.org.uk> (raw)
In-Reply-To: <20200406092540.GB31279@Red>
On Mon, Apr 06, 2020 at 11:25:40AM +0200, Corentin Labbe wrote:
> On Mon, Apr 06, 2020 at 10:16:00AM +0100, Russell King - ARM Linux admin wrote:
> > On Mon, Apr 06, 2020 at 10:27:20AM +0200, Corentin Labbe wrote:
> > > Hello
> > >
> > > I am trying to add the last missing Allwinner Soc in kernelci: the A80.
> > > But this SoC does not have any way to be used in kernelci, no USB nor network in uboot.
> > > So I have tried to fake uboot since the kernel has network support and run the new kernel via kexec.
> > >
> > > But kexec 2.0.18 fail to work:
> > > kexec --force /tmp/kernel --initrd /tmp/ramdisk --dtb /tmp/dtb --command-line='console=ttyS0,115200n8 root=/dev/ram0 earlycon=uart,mmio32,0x7000000 ip=dhcp'
> >
> > What happens if you omit the dtb argument?
> >
>
> No change without dtb
>
> I have also tried to add --mem-mim and --mem-max without any change.
> I given mem according to what I saw in /proc/iomem
> 20000000-9fffffff : System RAM
> 20008000-207fffff : Kernel code
> 20900000-209a0c87 : Kernel data
> So I gave --mem-min 0x30000000 --mem-max 0x9fffffff
> Anyway, the result is always the same.
The next step is to enable the early debugging - first in the
decompressor - add #define DEBUG to the top of
arch/arm/boot/compressed/head.S
Also enable DEBUG_LL in the kernel and use earlyprintk to see if you can
get anything from the new kernel.
--
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTC broadband for 0.8mile line in suburbia: sync at 10.2Mbps down 587kbps up
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next prev parent reply other threads:[~2020-04-06 9:37 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-06 8:27 Trying to kexec on Allwinner A80 Corentin Labbe
2020-04-06 9:16 ` Russell King - ARM Linux admin
2020-04-06 9:25 ` Corentin Labbe
2020-04-06 9:37 ` Russell King - ARM Linux admin [this message]
2020-04-06 20:10 ` Corentin Labbe
2020-04-07 7:31 ` Russell King - ARM Linux admin
2020-04-07 8:01 ` Corentin Labbe
2020-04-07 8:12 ` Russell King - ARM Linux admin
2020-04-07 9:32 ` Corentin Labbe
2020-04-07 10:01 ` Russell King - ARM Linux admin
2020-04-07 10:02 ` Russell King - ARM Linux admin
2020-04-07 10:19 ` Russell King - ARM Linux admin
2020-04-07 11:34 ` Corentin Labbe
2020-04-07 12:22 ` Russell King - ARM Linux admin
2020-04-07 13:05 ` Corentin Labbe
2020-04-07 13:26 ` Russell King - ARM Linux admin
2020-04-07 13:48 ` Corentin Labbe
2020-04-07 18:17 ` Russell King - ARM Linux admin
2020-04-08 8:40 ` Corentin Labbe
2020-04-08 9:33 ` Russell King - ARM Linux admin
2020-04-08 15:24 ` Corentin Labbe
2020-04-08 16:16 ` Russell King - ARM Linux admin
2025-04-13 8:52 ` Corentin Labbe
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