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From: "H. Peter Anvin" <hpa@linux.intel.com>
To: Grant Likely <grant.likely@secretlab.ca>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
	x86@kernel.org, linux-kernel@vger.kernel.org,
	sodaville@linutronix.de, Rob Landley <rob@landley.net>,
	devicetree-discuss@lists.ozlabs.org
Subject: Re: [sodaville] [PATCH 02/11] x86: Add device tree support
Date: Mon, 03 Jan 2011 08:19:36 -0800	[thread overview]
Message-ID: <4D21F718.8010600@linux.intel.com> (raw)
In-Reply-To: <4D21F3DB.90504@linux.intel.com>

On 01/03/2011 08:05 AM, H. Peter Anvin wrote:
> On 12/30/2010 12:58 PM, Grant Likely wrote:
>>
>> Right, but in all of those cases a boot wrapper provides the same
>> functionality with better flexability, such as being able to provided
>> the dtb image(s) at install time instead of compile time.
>>
> 
> Assuming the boot wrapper is written correctly.  I have seen a number of
> cases in which it was not, and it being "already locked into firmware"
> and not changeable.
> 
> It's a nice theory.  And in theory, theory and practice agree.
> 

By the way, this is the same reason we also allow the initramfs and even
the command line to be compiled in.

	-hpa

  reply	other threads:[~2011-01-03 16:19 UTC|newest]

Thread overview: 111+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-11-25 17:39 Add device tree support for x86 Sebastian Andrzej Siewior
2010-11-25 17:39 ` [PATCH 01/11] x86/kernel: remove conditional early remap in parse_e820_ext Sebastian Andrzej Siewior
2010-12-08  8:38   ` [sodaville] " Sebastian Andrzej Siewior
2010-12-08 14:15     ` Thomas Gleixner
2010-12-15 23:28   ` H. Peter Anvin
2010-12-16  9:55     ` Sebastian Andrzej Siewior
2010-11-25 17:39 ` [PATCH 02/11] x86: Add device tree support Sebastian Andrzej Siewior
2010-11-25 17:39   ` Sebastian Andrzej Siewior
2010-11-25 22:53   ` Sam Ravnborg
2010-11-25 22:53     ` Sam Ravnborg
2010-11-26  9:06     ` Sebastian Andrzej Siewior
2010-11-26  9:06       ` Sebastian Andrzej Siewior
2010-11-26 21:42   ` Benjamin Herrenschmidt
2010-11-26 21:42     ` Benjamin Herrenschmidt
2010-11-28 13:49     ` Sebastian Andrzej Siewior
2010-11-28 13:49       ` Sebastian Andrzej Siewior
2010-11-28 22:28       ` Benjamin Herrenschmidt
2010-11-28 22:28         ` Benjamin Herrenschmidt
2010-12-30  8:26       ` Grant Likely
2010-12-30  8:26         ` Grant Likely
2010-12-30  8:45         ` Rob Landley
2010-12-30 20:58           ` Grant Likely
2010-12-30 20:58             ` Grant Likely
2011-01-03 16:05             ` [sodaville] " H. Peter Anvin
2011-01-03 16:19               ` H. Peter Anvin [this message]
2011-01-03 17:52                 ` Grant Likely
2011-01-03 17:52                   ` Grant Likely
2011-01-03 18:06                   ` H. Peter Anvin
2011-01-03 18:10                     ` H. Peter Anvin
2011-01-03 18:10                       ` H. Peter Anvin
2010-12-30 20:57         ` Grant Likely
2010-12-30 20:57           ` Grant Likely
2010-12-31  0:51         ` [sodaville] " H. Peter Anvin
2010-12-31  0:51           ` H. Peter Anvin
2010-11-25 17:39 ` [PATCH 03/11] x86/dtb: Add a device tree for CE4100 Sebastian Andrzej Siewior
2010-11-25 17:39   ` Sebastian Andrzej Siewior
2010-11-26 21:57   ` Benjamin Herrenschmidt
2010-11-26 21:57     ` Benjamin Herrenschmidt
2010-11-28 16:04     ` Sebastian Andrzej Siewior
2010-11-28 16:04       ` Sebastian Andrzej Siewior
2010-11-28 22:53       ` Benjamin Herrenschmidt
2010-11-28 22:53         ` Benjamin Herrenschmidt
2010-11-29  1:34         ` Mitch Bradley
2010-11-29 18:26           ` [sodaville] " H. Peter Anvin
2010-11-29 20:03             ` Benjamin Herrenschmidt
2010-11-29 19:44           ` Sebastian Andrzej Siewior
2010-11-29 19:44             ` Sebastian Andrzej Siewior
2010-12-02  0:40             ` David Gibson
2010-12-02  0:40               ` David Gibson
2010-11-29 19:07         ` Scott Wood
2010-11-29 19:07           ` Scott Wood
2010-11-29 20:05           ` Benjamin Herrenschmidt
2010-11-29 20:32             ` Mitch Bradley
2010-11-29 20:44               ` Benjamin Herrenschmidt
2010-11-29 20:44                 ` Benjamin Herrenschmidt
2010-11-29 21:32                 ` Mitch Bradley
2010-11-29 21:32                   ` Mitch Bradley
2010-11-29 23:47                 ` Alan Cox
2010-11-30  2:50                   ` Benjamin Herrenschmidt
2010-11-30  2:50                     ` Benjamin Herrenschmidt
2010-11-30 11:20                     ` Sebastian Andrzej Siewior
2010-11-30 11:20                       ` Sebastian Andrzej Siewior
2010-11-29 23:42               ` Alan Cox
2010-11-30 21:18                 ` [sodaville] " H. Peter Anvin
2010-11-30 11:51               ` Sebastian Andrzej Siewior
2010-11-30 11:51                 ` Sebastian Andrzej Siewior
2010-11-30 20:31                 ` Benjamin Herrenschmidt
2010-11-30 20:31                   ` Benjamin Herrenschmidt
2010-11-29 23:58           ` David Gibson
2010-11-29 23:58             ` David Gibson
2010-11-29 19:36         ` [sodaville] " Sebastian Andrzej Siewior
2010-11-29 20:14           ` Benjamin Herrenschmidt
2010-11-29  2:22     ` David Gibson
2010-11-29  2:22       ` David Gibson
2010-11-25 17:39 ` [PATCH 04/11] x86/dtb: add irq host abstraction Sebastian Andrzej Siewior
2010-11-25 17:39   ` Sebastian Andrzej Siewior
2010-11-25 19:30   ` Jon Loeliger
2010-11-26 14:19     ` Sebastian Andrzej Siewior
2010-11-26 14:19       ` Sebastian Andrzej Siewior
2010-11-26 21:36       ` Benjamin Herrenschmidt
2010-11-26 21:36         ` Benjamin Herrenschmidt
2010-12-01 10:31         ` [sodaville] " Sebastian Andrzej Siewior
2010-12-01 10:31           ` Sebastian Andrzej Siewior
2010-11-27  3:11       ` Jon Loeliger
2010-11-27  3:11         ` Jon Loeliger
2010-11-25 17:39 ` [PATCH 05/11] x86/dtb: add early parsing of APIC and IO APIC Sebastian Andrzej Siewior
2010-11-25 17:39   ` Sebastian Andrzej Siewior
2010-11-25 17:39 ` [PATCH 06/11] x86/dtb: add support hpet Sebastian Andrzej Siewior
2010-11-25 17:39   ` Sebastian Andrzej Siewior
2010-11-25 17:39 ` [PATCH 07/11] x86/dtb: add support for PCI devices backed by dtb nodes Sebastian Andrzej Siewior
2010-11-25 17:39   ` Sebastian Andrzej Siewior
2010-11-27 22:33   ` Benjamin Herrenschmidt
2010-11-27 22:33     ` Benjamin Herrenschmidt
2010-11-28 14:04     ` Sebastian Andrzej Siewior
2010-11-28 14:04       ` Sebastian Andrzej Siewior
2010-11-28 22:32       ` Benjamin Herrenschmidt
2010-11-28 22:32         ` Benjamin Herrenschmidt
2010-12-02 16:17         ` Sebastian Andrzej Siewior
2010-12-02 16:17           ` Sebastian Andrzej Siewior
2010-11-25 17:39 ` [PATCH 08/11] x86/dtb: Add generic bus probe Sebastian Andrzej Siewior
2010-11-25 17:39   ` Sebastian Andrzej Siewior
2010-11-25 17:39 ` [PATCH 09/11] x86/ioapic: Add OF bindings for IO-APIC Sebastian Andrzej Siewior
2010-11-25 17:39   ` Sebastian Andrzej Siewior
2010-11-25 17:40 ` [PATCH 10/11] x86/io_apic: add simply id set Sebastian Andrzej Siewior
2010-11-25 21:04   ` Yinghai Lu
2010-11-26 11:03     ` Sebastian Andrzej Siewior
2010-11-26 16:50     ` [PATCH] x86/io_apic: split setup_ioapic_ids_from_mpc() into a non-checkign version Sebastian Andrzej Siewior
2010-12-06 13:33       ` [tip:x86/apic] x86: io_apic: Split setup_ioapic_ids_from_mpc() tip-bot for Sebastian Andrzej Siewior
2010-12-07  8:59         ` [PATCH -v2] x86, ioapic: Don't write io_apic ID if it is not changed Yinghai Lu
2010-12-09 20:56           ` [tip:x86/apic-cleanups] x86, ioapic: Avoid writing io_apic id if already correct tip-bot for Yinghai Lu
2010-11-25 17:40 ` [PATCH 11/11] x86/ce4100: use OF for ioapic Sebastian Andrzej Siewior

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