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From: Jeff Garzik <jeff@garzik.org>
To: David Woodhouse <dwmw2@infradead.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH 00/18] firmware: moving drivers to request_firmware()
Date: Thu, 05 Jun 2008 18:11:25 -0400	[thread overview]
Message-ID: <4848648D.8010501@garzik.org> (raw)
In-Reply-To: <20080605.foo@pmac.infradead.org>

Here is my "ideal firmware world":

* do NOT remove ability to compile firmware into the kernel (or into a 
module)

* firmware should be field-replaceable, even if one was compiled in

* the preferred form of firmware is one or more binary blobs, stored in 
a regular [filesystem|git] binary file.

* the preferred form is NOT ascii C source, or any other format other 
than the native format that the hardware wants.  Remember, the vendor 
only provided an ASCII-ized firmware because our system required it that 
way, not because that's the preferred form.

* in-tree firmwares should be stored in one or more binary files in the 
tree, not in C source code or .ihex files.

* when firmware is stored as binary blob, it is easier for
	(1) vendor to replace,
	(2) developer/user to compare/verify using sha1,
	(3) does not require a C compiler or binutils to unpack


Thus, if you are going to be touching the in-tree firmwares at all, it 
doesn't make sense to convert from C source to any format other than 
native binary.

	Jeff






  parent reply	other threads:[~2008-06-05 22:11 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-06-05  9:52 [PATCH 00/18] firmware: moving drivers to request_firmware() David Woodhouse
2008-05-23 12:52 ` [PATCH 01/18] firmware: allow firmware files to be built into kernel image David Woodhouse
2008-05-23 12:58 ` [PATCH 02/18] firmware: Add CONFIG_BUILTIN_FIRMWARE option David Woodhouse
2008-05-26 22:01 ` [PATCH 04/18] firmware: convert korg1212 driver to use firmware loader exclusively David Woodhouse
2008-05-29  8:01 ` [PATCH 03/18] firmware: Add 'firmware_install' make target David Woodhouse
2008-05-29 11:48 ` [PATCH 05/18] firmware: convert maestro3 driver to use firmware loader exclusively David Woodhouse
2008-05-29 12:07 ` [PATCH 06/18] firmware: convert ymfpci " David Woodhouse
2008-05-29 13:39 ` [PATCH 07/18] smctr: use request_firmware() David Woodhouse
2008-05-29 14:17 ` [PATCH 08/18] kaweth: " David Woodhouse
2008-05-29 16:50 ` [PATCH 09/18] ttusb-budget: " David Woodhouse
2008-05-30 10:57 ` [PATCH 10/18] ihex.h: binary representation of ihex records David Woodhouse
2008-06-05 12:26   ` Clemens Ladisch
2008-05-31 22:20     ` David Woodhouse
2008-05-30 12:15 ` [PATCH 14/18] keyspan_pda: use request_firmware() David Woodhouse
2008-05-30 15:49 ` [PATCH 17/18] ti_usb_3410_5052: " David Woodhouse
2008-05-30 22:35 ` [PATCH 18/18] whiteheat: " David Woodhouse
2008-05-31 12:07 ` [PATCH 12/18] ihex: add ihex2fw tool for converting HEX files into firmware images David Woodhouse
2008-05-31 12:20 ` [PATCH 11/18] ihex: request_ihex_firmware() function to load and validate firmware David Woodhouse
2008-06-05 10:07 ` [PATCH 00/18] firmware: moving drivers to request_firmware() Arkadiusz Miskiewicz
2008-06-05 10:09   ` David Woodhouse
2008-06-05 12:26 ` Clemens Ladisch
2008-06-05 19:16 ` Jeff Garzik
2008-06-05 19:54   ` David Woodhouse
2008-06-05 20:12     ` Jeff Garzik
2008-06-05 20:53       ` David Woodhouse
2008-06-05 21:01         ` Jeff Garzik
2008-05-31 21:22           ` David Woodhouse
2008-06-05 21:33             ` Jeff Garzik
2008-05-31 22:15               ` David Woodhouse
2008-06-05 22:11 ` Jeff Garzik [this message]
2008-05-31 22:18   ` David Woodhouse
2008-06-05 22:39     ` Jeff Garzik
2008-05-31 22:45       ` David Woodhouse
2008-06-06  9:15   ` Alan Cox

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