From: "Tom Rini" <trini@konsulko.com>
To: Nishanth Menon <nm@ti.com>
Cc: Denys Dmytriyenko <denis@denix.org>, meta-ti@lists.yoctoproject.org
Subject: Re: [meta-ti] [PATCHv2] conf: am335x-evm: Add extlinux.conf support
Date: Mon, 14 Jun 2021 12:02:07 -0400 [thread overview]
Message-ID: <20210614160207.GF9516@bill-the-cat> (raw)
In-Reply-To: <20210614144353.oajmyqlnv4sjhyzf@reputably>
On Mon, Jun 14, 2021 at 09:43:53AM -0500, Nishanth Menon wrote:
> On 15:36-20210613, Denys Dmytriyenko wrote:
> > On Sat, Jun 12, 2021 at 09:13:31AM -0400, Tom Rini wrote:
> > > To make use of the "generic distro boot" support in U-Boot, an
> > > extlinux.conf file needs to be generated and reside in the extlinux
> > > directory. The extlinux.conf file will be parsed by U-Boot and the
> > > "append" line will be evaluated and expanded and used entirely as the
> > > bootargs passed to the kernel. Our generated extlinux.conf states
> > > that the kernel image and device trees live one level up (so the root
> > > directory) from it, so populate that location with our kernel and device
> > > trees.
> > >
> > > Signed-off-by: Tom Rini <trini@konsulko.com>
> >
> > Reviewed-by: Denys Dmytriyenko <denys@konsulko.com>
> >
> >
> > > ---
> > > Changes in v2:
> > > - Elaborate on how this feature works in the commit message.
> > > ---
> > > conf/machine/include/ti33x.inc | 11 ++++++++++-
> > > 1 file changed, 10 insertions(+), 1 deletion(-)
> > >
> > > diff --git a/conf/machine/include/ti33x.inc b/conf/machine/include/ti33x.inc
> > > index 6dfda754e9dd..35e057d57497 100644
> > > --- a/conf/machine/include/ti33x.inc
> > > +++ b/conf/machine/include/ti33x.inc
> > > @@ -43,6 +43,15 @@ UBOOT_MACHINE = "am335x_evm_config"
> > > UBOOT_ENTRYPOINT = "0x80008000"
> > > UBOOT_LOADADDRESS = "0x80008000"
> > >
> > > +# Generate an extlinux.conf file
> > > +UBOOT_EXTLINUX = "1"
> > > +UBOOT_EXTLINUX_ROOT = "root=PARTUUID=${uuid}"
> > > +UBOOT_EXTLINUX_BOOT_FILES = " \
> > > + extlinux.conf;extlinux/extlinux.conf \
> > > + ${KERNEL_IMAGETYPE} \
> > > + ${KERNEL_DEVICETREE} \
> > > +"
> > > +
>
> Does it make better if we do this in ti-soc.inc ?
The problem here is that we'll have one set of changes for 32bit
platforms, where I think extlinux.conf ends up being best as if you look
at other distributions (ie Debian), they end up doing the not-EFI path.
But on 64bit, everyone goes the EFI path. So I'm working through making
an OE image that has a reasonable grub-efi path for us to boot up with.
--
Tom
next prev parent reply other threads:[~2021-06-14 16:02 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <16875AD11A54340A.8333@lists.yoctoproject.org>
2021-06-12 13:13 ` [PATCHv2] conf: am335x-evm: Add extlinux.conf support Tom Rini
2021-06-13 19:36 ` [meta-ti] " Denys Dmytriyenko
2021-06-14 14:43 ` Nishanth Menon
2021-06-14 16:02 ` Tom Rini [this message]
2021-06-14 16:27 ` Nishanth Menon
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