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From: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
To: "Bjørn Mork" <bjorn@mork.no>
Cc: linux-mips@vger.kernel.org, Rob Herring <robh+dt@kernel.org>,
	Frank Rowand <frowand.list@gmail.com>
Subject: Re: [PATCH] MIPS: vmlinux.lds.S: align raw appended dtb to 8 bytes
Date: Mon, 8 Mar 2021 18:47:06 +0100	[thread overview]
Message-ID: <20210308174706.GB13680@alpha.franken.de> (raw)
In-Reply-To: <878s6xbvxm.fsf@miraculix.mork.no>

On Mon, Mar 08, 2021 at 02:45:57PM +0100, Bjørn Mork wrote:
> Thomas Bogendoerfer <tsbogend@alpha.franken.de> writes:
> 
> > I see
> >
> > diff --git a/arch/mips/kernel/vmlinux.lds.S b/arch/mips/kernel/vmlinux.lds.S
> > index c1c345be04ff..4b4e39b7c79b 100644
> > --- a/arch/mips/kernel/vmlinux.lds.S
> > +++ b/arch/mips/kernel/vmlinux.lds.S
> > @@ -145,6 +145,7 @@ SECTIONS
> >         }
> >  
> >  #ifdef CONFIG_MIPS_ELF_APPENDED_DTB
> > +       STRUCT_ALIGN();
> >         .appended_dtb : AT(ADDR(.appended_dtb) - LOAD_OFFSET) {
> >                 *(.appended_dtb)
> >                 KEEP(*(.appended_dtb))
> > @@ -172,6 +173,7 @@ SECTIONS
> >  #endif
> >  
> >  #ifdef CONFIG_MIPS_RAW_APPENDED_DTB
> > +       STRUCT_ALIGN();
> >         __appended_dtb = .;
> >         /* leave space for appended DTB */
> >         . += 0x100000;
> >
> > in that patch, and IMHO this does align the appended_dtb. What do I miss ?
> 
> I'll not pretend I know anything about this subject, so feel free to
> adjust as necessary.
> 
> The problem with that patch is that it doesn't pad the image to the
> aligment.   So you can't do
> 
>  cat my.dtb >> arch/mips/boot/vmlinux.bin
> 
> anymore.  This used to work before commit 79edff12060f.

ok, took a little while to fully understand the problem. I've applied
your patch to mips-fixes with a Fixes: tag added.

Thomas.

-- 
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea.                                                [ RFC1925, 2.3 ]

      reply	other threads:[~2021-03-08 17:48 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-07 18:23 [PATCH] MIPS: vmlinux.lds.S: align raw appended dtb to 8 bytes Bjørn Mork
2021-03-08 10:55 ` Thomas Bogendoerfer
2021-03-08 11:10   ` Bjørn Mork
2021-03-08 12:53     ` Thomas Bogendoerfer
2021-03-08 13:45       ` Bjørn Mork
2021-03-08 17:47         ` Thomas Bogendoerfer [this message]

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