Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

Hi, On 15.12.2015 14:20, Russell King - ARM Linux wrote: You could also just save_atags() in there, with a comment saying that this is a work-around for N900 which needs the ATAGs saved, and this is allowed in ->reserve as a special exception. What about this (just to confirm I got the idea

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

On Tue, 15 Dec 2015, Russell King - ARM Linux wrote: > On Tue, Dec 15, 2015 at 10:33:25AM +0100, Pali Rohár wrote: > > So am I understand correctly that solution would be to hack > > arch/arm/mm/mmu.c to not overwrite page at PHYS_OFFSET? > > That's completely unnecessary: there are enough

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

On Monday 30 November 2015 11:09:42 Nicolas Pitre wrote: > On Mon, 30 Nov 2015, Pali Rohár wrote: > > > On Monday 30 November 2015 07:23:53 Tony Lindgren wrote: > > > * Pali Rohár [151129 16:16]: > > > > On Monday 30 November 2015 01:09:17 Nicolas Pitre wrote: > > > > > On

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

On Tue, Dec 15, 2015 at 10:33:25AM +0100, Pali Rohár wrote: > So am I understand correctly that solution would be to hack > arch/arm/mm/mmu.c to not overwrite page at PHYS_OFFSET? That's completely unnecessary: there are enough platform hooks to cope with whatever the platform requires. If you

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

On Tuesday 15 December 2015 10:33:25 Pali Rohár wrote: > On Monday 30 November 2015 11:09:42 Nicolas Pitre wrote: > > On Mon, 30 Nov 2015, Pali Rohár wrote: > > > On Monday 30 November 2015 07:23:53 Tony Lindgren wrote: > > > > * Pali Rohár [151129 16:16]: > > > > > On

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

On Mon, 30 Nov 2015, Pali Rohár wrote: > On Monday 30 November 2015 07:23:53 Tony Lindgren wrote: > > * Pali Rohár [151129 16:16]: > > > On Monday 30 November 2015 01:09:17 Nicolas Pitre wrote: > > > > On Sun, 29 Nov 2015, Russell King - ARM Linux wrote: > > > > > On Sat,

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

* Pali Rohár [151129 16:16]: > On Monday 30 November 2015 01:09:17 Nicolas Pitre wrote: > > On Sun, 29 Nov 2015, Russell King - ARM Linux wrote: > > > On Sat, Nov 28, 2015 at 12:34:23PM -0500, Nicolas Pitre wrote: > > > > Good. And Arnd likes the idea too. So we might be

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

On Monday 30 November 2015 07:23:53 Tony Lindgren wrote: > * Pali Rohár [151129 16:16]: > > On Monday 30 November 2015 01:09:17 Nicolas Pitre wrote: > > > On Sun, 29 Nov 2015, Russell King - ARM Linux wrote: > > > > On Sat, Nov 28, 2015 at 12:34:23PM -0500, Nicolas Pitre

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

On Sunday 29 November 2015 19:09:39 Russell King - ARM Linux wrote: > On Sat, Nov 28, 2015 at 12:34:23PM -0500, Nicolas Pitre wrote: > > Good. And Arnd likes the idea too. So we might be converging at > > last which is a good thing. > > I disagree with the idea that there is convergence. There

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

On Sun, Nov 29, 2015 at 07:19:18PM +0100, Pali Rohár wrote: > On Sunday 29 November 2015 19:09:39 Russell King - ARM Linux wrote: > > On Sat, Nov 28, 2015 at 12:34:23PM -0500, Nicolas Pitre wrote: > > > Good. And Arnd likes the idea too. So we might be converging at > > > last which is a good

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

On Sat, Nov 28, 2015 at 12:34:23PM -0500, Nicolas Pitre wrote: > Good. And Arnd likes the idea too. So we might be converging at last > which is a good thing. I disagree with the idea that there is convergence. There might be convergence towards an idea, but... Here's a mail extract, from July

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

On Sun, 29 Nov 2015, Russell King - ARM Linux wrote: > On Sat, Nov 28, 2015 at 12:34:23PM -0500, Nicolas Pitre wrote: > > Good. And Arnd likes the idea too. So we might be converging at last > > which is a good thing. > > I disagree with the idea that there is convergence. There might be >

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

On Monday 30 November 2015 01:09:17 Nicolas Pitre wrote: > On Sun, 29 Nov 2015, Russell King - ARM Linux wrote: > > On Sat, Nov 28, 2015 at 12:34:23PM -0500, Nicolas Pitre wrote: > > > Good. And Arnd likes the idea too. So we might be converging at > > > last which is a good thing. > > > > I

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

On Fri, Nov 27, 2015 at 06:28:50PM -0500, Nicolas Pitre wrote: > On Fri, 27 Nov 2015, Arnd Bergmann wrote: > > > I don't mind creating the /proc/atags compatibility hack from the kernel > > for a DT based N700 kernel, as long as we limit it as much as we can > > to the machines that need it.

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

On Sat, Nov 28, 2015 at 01:27:07PM +0100, Arnd Bergmann wrote: > On Friday 27 November 2015 18:28:50 Nicolas Pitre wrote: > > On Fri, 27 Nov 2015, Arnd Bergmann wrote: > > > > > I don't mind creating the /proc/atags compatibility hack from the kernel > > > for a DT based N700 kernel, as long as

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

On Friday 27 November 2015 18:28:50 Nicolas Pitre wrote: > On Fri, 27 Nov 2015, Arnd Bergmann wrote: > > > I don't mind creating the /proc/atags compatibility hack from the kernel > > for a DT based N700 kernel, as long as we limit it as much as we can > > to the machines that need it. Leaving a

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

On Sat, 28 Nov 2015, Russell King - ARM Linux wrote: > On Fri, Nov 27, 2015 at 06:28:50PM -0500, Nicolas Pitre wrote: > > On Fri, 27 Nov 2015, Arnd Bergmann wrote: > > > > > I don't mind creating the /proc/atags compatibility hack from the kernel > > > for a DT based N700 kernel, as long as we

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

On 11/28/2015 9:34 AM, Nicolas Pitre wrote: > On Sat, 28 Nov 2015, Russell King - ARM Linux wrote: > >> On Fri, Nov 27, 2015 at 06:28:50PM -0500, Nicolas Pitre wrote: >>> On Fri, 27 Nov 2015, Arnd Bergmann wrote: >>> I don't mind creating the /proc/atags compatibility hack from the kernel

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

On Fri, Nov 27, 2015 at 01:27:23PM +, Russell King - ARM Linux wrote: > It is possible to redirect any program to open any other file. You can > do it via a LD preload, and intercepting the open(), and possibly the > read() calls if you want to do something more fancy. The down-side is >

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

* Pali Rohár [151127 00:39]: > On Thursday 26 November 2015 12:39:30 Tony Lindgren wrote: > > Just to explore options.. How about make a minimal device driver that > > just loads the atags blob from /lib/firmware and then shows it in > > /proc/atags? Of course some checking

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

On Thu, Nov 26, 2015 at 10:07:39AM +0100, Pali Rohár wrote: > On Wednesday 25 November 2015 20:19:21 Frank Rowand wrote: > > > Or populate /proc/atags only for the ones that need it from machine > > > specific init_early? > > > > This is circling back to the first comment from Russell King where

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

On Friday 27 November 2015 19:51:48 Russell King - ARM Linux wrote: > On Fri, Nov 27, 2015 at 01:27:23PM +, Russell King - ARM Linux wrote: > > It is possible to redirect any program to open any other file. You can > > do it via a LD preload, and intercepting the open(), and possibly the > >

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

On Fri, 27 Nov 2015, Arnd Bergmann wrote: > I don't mind creating the /proc/atags compatibility hack from the kernel > for a DT based N700 kernel, as long as we limit it as much as we can > to the machines that need it. Leaving a board file for the N700 in place > that contains the procfs code

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

Hi On Fri, Nov 27, 2015 at 9:38 AM, Pali Rohár wrote: > On Thursday 26 November 2015 12:39:30 Tony Lindgren wrote: >> Just to explore options.. How about make a minimal device driver that >> just loads the atags blob from /lib/firmware and then shows it in >> /proc/atags?

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

On Thursday 26 November 2015 12:39:30 Tony Lindgren wrote: > Just to explore options.. How about make a minimal device driver that > just loads the atags blob from /lib/firmware and then shows it in > /proc/atags? Of course some checking on the atags should be done by > the driver.. And who can

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

Hi On Fri, Nov 27, 2015 at 9:44 AM, Michael Trimarchi wrote: > Hi > > On Fri, Nov 27, 2015 at 9:38 AM, Pali Rohár wrote: >> On Thursday 26 November 2015 12:39:30 Tony Lindgren wrote: >>> Just to explore options.. How about make a minimal

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

* Pali Rohár [151126 01:08]: > On Wednesday 25 November 2015 20:19:21 Frank Rowand wrote: > > > Or populate /proc/atags only for the ones that need it from machine > > > specific init_early? > > > > This is circling back to the first comment from Russell King where > > he

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

On 26.11.2015 22:39, Tony Lindgren wrote: Just to explore options.. How about make a minimal device driver that just loads the atags blob from /lib/firmware and then shows it in /proc/atags? Of course some checking on the atags should be done by the driver.. What is the chance for such a

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

On Wednesday 25 November 2015 20:19:21 Frank Rowand wrote: > > Or populate /proc/atags only for the ones that need it from machine > > specific init_early? > > This is circling back to the first comment from Russell King where > he suggested a legacy file for the N900 which calls save_atags(): >

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

On 11/25/2015 1:03 PM, Tony Lindgren wrote: > * Arnd Bergmann [151125 11:50]: >> On Wednesday 25 November 2015 10:16:44 Tony Lindgren wrote: >>> * Pali Rohár [151123 06:46]: On Sunday 22 November 2015 07:51:46 Pavel Machek wrote: > On Wed 2015-11-11

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

* Pali Rohár [151123 06:46]: > On Sunday 22 November 2015 07:51:46 Pavel Machek wrote: > > On Wed 2015-11-11 17:10:46, Frank Rowand wrote: > > > Adding devicetree list. > > > > > > Thread starts at > > >

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

On Wednesday 25 November 2015 10:16:44 Tony Lindgren wrote: > * Pali Rohár [151123 06:46]: > > On Sunday 22 November 2015 07:51:46 Pavel Machek wrote: > > > On Wed 2015-11-11 17:10:46, Frank Rowand wrote: > > > > Adding devicetree list. > > > > > > > > Thread starts at > >

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

On Wednesday 25 November 2015 22:29:53 Arnd Bergmann wrote: > On Wednesday 25 November 2015 13:03:10 Tony Lindgren wrote: > > * Arnd Bergmann [151125 11:50]: > > > On Wednesday 25 November 2015 10:16:44 Tony Lindgren wrote: > > > > At least I don't have better solutions in mind. >

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

On Wednesday 25 November 2015 22:51:00 Arnd Bergmann wrote: > On Wednesday 25 November 2015 22:44:28 Pali Rohár wrote: > > Arnd, my question about proper solution reminds... Proprietary > > bootloader which cannot be replaced (e.g. it is signed or do > > unknown magic) provides information to

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

On Wednesday 25 November 2015 22:44:28 Pali Rohár wrote: > > Arnd, my question about proper solution reminds... Proprietary > bootloader which cannot be replaced (e.g. it is signed or do unknown > magic) provides information to booted kernel via custom specific ATAGs > fields. How userspace

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

On Wednesday 25 November 2015 13:03:10 Tony Lindgren wrote: > * Arnd Bergmann [151125 11:50]: > > On Wednesday 25 November 2015 10:16:44 Tony Lindgren wrote: > > > At least I don't have better solutions in mind. > > > > I would be happier if we could restrict this as much as

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

* Arnd Bergmann [151125 11:50]: > On Wednesday 25 November 2015 10:16:44 Tony Lindgren wrote: > > * Pali Rohár [151123 06:46]: > > > On Sunday 22 November 2015 07:51:46 Pavel Machek wrote: > > > > On Wed 2015-11-11 17:10:46, Frank Rowand wrote: > > > > >

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

On Sunday 22 November 2015 07:51:46 Pavel Machek wrote: > On Wed 2015-11-11 17:10:46, Frank Rowand wrote: > > Adding devicetree list. > > > > Thread starts at > > http://lists.infradead.org/pipermail/linux-arm-kernel/2015-July/354459.html > > > > On 11/5/2015 8:17 AM, Tony Lindgren wrote: > > >

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

On Wed 2015-11-11 17:10:46, Frank Rowand wrote: > Adding devicetree list. > > Thread starts at > http://lists.infradead.org/pipermail/linux-arm-kernel/2015-July/354459.html > > On 11/5/2015 8:17 AM, Tony Lindgren wrote: > > * Pali Rohár [151105 03:41]: > >> On Tuesday 13

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

Adding devicetree list. Thread starts at http://lists.infradead.org/pipermail/linux-arm-kernel/2015-July/354459.html On 11/5/2015 8:17 AM, Tony Lindgren wrote: > * Pali Rohár [151105 03:41]: >> On Tuesday 13 October 2015 16:37:46 Pali Rohár wrote: >>> On Monday 12 October

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

On Tuesday 13 October 2015 16:37:46 Pali Rohár wrote: > On Monday 12 October 2015 13:45:09 Tony Lindgren wrote: > > * Pali Rohár [151012 13:29]: > > > On Monday 12 October 2015 22:16:40 Tony Lindgren wrote: > > > > > > > > Pali, any news on posting an updated series with

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

* Pali Rohár [151105 03:41]: > On Tuesday 13 October 2015 16:37:46 Pali Rohár wrote: > > On Monday 12 October 2015 13:45:09 Tony Lindgren wrote: > > > * Pali Rohár [151012 13:29]: > > > > On Monday 12 October 2015 22:16:40 Tony Lindgren wrote: > > > >

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

On Monday 12 October 2015 13:45:09 Tony Lindgren wrote: > * Pali Rohár [151012 13:29]: > > On Monday 12 October 2015 22:16:40 Tony Lindgren wrote: > > > > > > Pali, any news on posting an updated series with the comments > > > addressed in this thread? It seems that we all

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

* Tony Lindgren [150713 06:21]: > * Pali Rohár [150707 05:00]: > > On Tuesday 07 July 2015 12:32:13 Russell King - ARM Linux wrote: > > > On Mon, Jul 06, 2015 at 10:26:13PM +0200, Pali Rohár wrote: > > > > Legacy bootloaders can pass additional information

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

On Monday 12 October 2015 22:16:40 Tony Lindgren wrote: > * Tony Lindgren [150713 06:21]: > > * Pali Rohár [150707 05:00]: > > > On Tuesday 07 July 2015 12:32:13 Russell King - ARM Linux wrote: > > > > On Mon, Jul 06, 2015 at 10:26:13PM +0200, Pali Rohár

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT "/chosen/linux,atags" entry

* Pali Rohár [151012 13:29]: > On Monday 12 October 2015 22:16:40 Tony Lindgren wrote: > > > > Pali, any news on posting an updated series with the comments > > addressed in this thread? It seems that we all pretty much agree > > what needs to be done. > > Tony, I'm not

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT /chosen/linux,atags entry

* Pali Rohár pali.ro...@gmail.com [150707 05:00]: On Tuesday 07 July 2015 12:32:13 Russell King - ARM Linux wrote: On Mon, Jul 06, 2015 at 10:26:13PM +0200, Pali Rohár wrote: Legacy bootloaders can pass additional information for kernel or legacy userspace applications. When booting DT

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT /chosen/linux,atags entry

On Tuesday 07 July 2015 12:32:13 Russell King - ARM Linux wrote: On Mon, Jul 06, 2015 at 10:26:13PM +0200, Pali Rohár wrote: Legacy bootloaders can pass additional information for kernel or legacy userspace applications. When booting DT kernel then ATAGs structure is not more visible after

Re: [PATCH 5/5] arm: boot: store ATAGs structure into DT /chosen/linux,atags entry

On Mon, Jul 06, 2015 at 10:26:13PM +0200, Pali Rohár wrote: Legacy bootloaders can pass additional information for kernel or legacy userspace applications. When booting DT kernel then ATAGs structure is not more visible after running kernel uncompress code. This patch stores full ATAGs

[PATCH 5/5] arm: boot: store ATAGs structure into DT /chosen/linux,atags entry

Legacy bootloaders can pass additional information for kernel or legacy userspace applications. When booting DT kernel then ATAGs structure is not more visible after running kernel uncompress code. This patch stores full ATAGs structure into DT /chosen/linux,atags entry, so kernel can later reuse