From: Christian Marangi <ansuelsmth@gmail.com>
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Russell King <linux@armlinux.org.uk>,
Arnd Bergmann <arnd@arndb.de>,
Andrew Morton <akpm@linux-foundation.org>,
Geert Uytterhoeven <geert+renesas@glider.be>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Jonathan Corbet <corbet@lwn.net>,
Thomas Gleixner <tglx@linutronix.de>,
Randy Dunlap <rdunlap@infradead.org>,
"Mike Rapoport (IBM)" <rppt@kernel.org>,
Eric DeVolder <eric.devolder@oracle.com>,
Nathan Chancellor <nathan@kernel.org>,
"Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>,
Kees Cook <keescook@chromium.org>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
Bjorn Andersson <andersson@kernel.org>,
Konrad Dybcio <konrad.dybcio@somainline.org>,
Linus Walleij <linus.walleij@linaro.org>,
John Crispin <john@phrozen.org>
Subject: Re: [PATCH 0/2] ARM: decompressor: support AUTO_ZRELADDR and appended DTB
Date: Sat, 20 Jan 2024 18:10:29 +0100 [thread overview]
Message-ID: <65abfe88.7b0a0220.6a394.c3b2@mx.google.com> (raw)
In-Reply-To: <CAMuHMdUYLEXVn=R2RFyfxeaSPKcwYxFxM1zcUpbXRFpQHe-WQw@mail.gmail.com>
On Sat, Jan 20, 2024 at 12:19:33PM +0100, Geert Uytterhoeven wrote:
> Hi Christian,
>
> On Fri, Jan 19, 2024 at 9:14 PM Christian Marangi <ansuelsmth@gmail.com> wrote:
> > With this applied and ARM_ATAG_DTB_COMPAT_IGNORE_MEM enabled (more
> > info in the related patch) ipq806x can boot right away with AUTO_ZRELADDR
> > enabled and a correct memory node defined in DTS.
> >
> > It's needed to ignore MEM ATAGs as most of the time the values from the
> > bootloader are hardcoded and OEM didn't care to actually provide them
> > resulting in funny situation where a Netgear R7800 with 512Mb of RAM
> > have Uboot passing 1.7GB of RAM with ATAGS.
>
> I guess you still need other values from ATAGS, so building a kernel
> without CONFIG_ARM_ATAG_DTB_COMPAT is not an option?
>
As I said in the other patch, yes DTB_COMPAT is still needed for
bootargs passed from the bootloader via ATAGs. Sorry for not making this
detail more clear in the cover letter.
--
Ansuel
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WARNING: multiple messages have this Message-ID (diff)
From: Christian Marangi <ansuelsmth@gmail.com>
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Russell King <linux@armlinux.org.uk>,
Arnd Bergmann <arnd@arndb.de>,
Andrew Morton <akpm@linux-foundation.org>,
Geert Uytterhoeven <geert+renesas@glider.be>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Jonathan Corbet <corbet@lwn.net>,
Thomas Gleixner <tglx@linutronix.de>,
Randy Dunlap <rdunlap@infradead.org>,
"Mike Rapoport (IBM)" <rppt@kernel.org>,
Eric DeVolder <eric.devolder@oracle.com>,
Nathan Chancellor <nathan@kernel.org>,
"Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>,
Kees Cook <keescook@chromium.org>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
Bjorn Andersson <andersson@kernel.org>,
Konrad Dybcio <konrad.dybcio@somainline.org>,
Linus Walleij <linus.walleij@linaro.org>,
John Crispin <john@phrozen.org>
Subject: Re: [PATCH 0/2] ARM: decompressor: support AUTO_ZRELADDR and appended DTB
Date: Sat, 20 Jan 2024 18:10:29 +0100 [thread overview]
Message-ID: <65abfe88.7b0a0220.6a394.c3b2@mx.google.com> (raw)
In-Reply-To: <CAMuHMdUYLEXVn=R2RFyfxeaSPKcwYxFxM1zcUpbXRFpQHe-WQw@mail.gmail.com>
On Sat, Jan 20, 2024 at 12:19:33PM +0100, Geert Uytterhoeven wrote:
> Hi Christian,
>
> On Fri, Jan 19, 2024 at 9:14 PM Christian Marangi <ansuelsmth@gmail.com> wrote:
> > With this applied and ARM_ATAG_DTB_COMPAT_IGNORE_MEM enabled (more
> > info in the related patch) ipq806x can boot right away with AUTO_ZRELADDR
> > enabled and a correct memory node defined in DTS.
> >
> > It's needed to ignore MEM ATAGs as most of the time the values from the
> > bootloader are hardcoded and OEM didn't care to actually provide them
> > resulting in funny situation where a Netgear R7800 with 512Mb of RAM
> > have Uboot passing 1.7GB of RAM with ATAGS.
>
> I guess you still need other values from ATAGS, so building a kernel
> without CONFIG_ARM_ATAG_DTB_COMPAT is not an option?
>
As I said in the other patch, yes DTB_COMPAT is still needed for
bootargs passed from the bootloader via ATAGs. Sorry for not making this
detail more clear in the cover letter.
--
Ansuel
next prev parent reply other threads:[~2024-01-20 17:11 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-19 20:12 [PATCH 0/2] ARM: decompressor: support AUTO_ZRELADDR and appended DTB Christian Marangi
2024-01-19 20:12 ` Christian Marangi
2024-01-19 20:12 ` [PATCH 1/2] ARM: decompressor: support memory start validation for " Christian Marangi
2024-01-19 20:12 ` Christian Marangi
2024-01-20 11:15 ` Geert Uytterhoeven
2024-01-20 11:15 ` Geert Uytterhoeven
2024-01-20 11:48 ` Linus Walleij
2024-01-20 11:48 ` Linus Walleij
2024-01-19 20:12 ` [PATCH 2/2] ARM: decompressor: add option to ignore MEM ATAGs Christian Marangi
2024-01-19 20:12 ` Christian Marangi
2024-01-20 11:51 ` Linus Walleij
2024-01-20 11:51 ` Linus Walleij
2024-01-20 16:57 ` Christian Marangi
2024-01-20 16:57 ` Christian Marangi
2024-01-20 11:52 ` Linus Walleij
2024-01-20 11:52 ` Linus Walleij
2024-01-20 17:00 ` Christian Marangi
2024-01-20 17:00 ` Christian Marangi
2024-01-21 19:37 ` Linus Walleij
2024-01-21 19:37 ` Linus Walleij
2024-01-20 11:19 ` [PATCH 0/2] ARM: decompressor: support AUTO_ZRELADDR and appended DTB Geert Uytterhoeven
2024-01-20 11:19 ` Geert Uytterhoeven
2024-01-20 17:10 ` Christian Marangi [this message]
2024-01-20 17:10 ` Christian Marangi
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