From: linus.ml.walleij@gmail.com (Linus Walleij)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: expose PB1176 ROM in debugfs
Date: Sun, 18 Jul 2010 22:39:52 +0200 [thread overview]
Message-ID: <AANLkTilxaHzHC3zFPR6q9v2mGKu7EG_Nv40V0kcZ-gwR@mail.gmail.com> (raw)
In-Reply-To: <20100718194720.GE24707@n2100.arm.linux.org.uk>
2010/7/18 Russell King - ARM Linux <linux@arm.linux.org.uk>:
> On Wed, Jul 07, 2010 at 02:05:39PM +0200, Linus Walleij wrote:
>> This exposes the PB1176 ROM as a simple 16KiB file in debugfs so
>> that it can be copied out and disassembled with some
>> objcopy+objdump massage for example. I used this to find out how
>> the ROM handled the CharLCD.
>
> Would it be better to expose this through a mtd ROM mapping (map_rom) ?
This is more convenient I think.
I don't know the actual purpose of MTD ROM mappings, so
paging David on this.
It has the small upside of only getting compiled in if you select
CONFIG_DEBUG_FS, and getting a distinct name in debugfs
rather than /dev/mtdN.
Also I can now cp /debugfs/pb1176-ROM foo.bin
Is this possible with mtdblocks or do you have to dd if=... ?
Yours,
Linus Walleij
next prev parent reply other threads:[~2010-07-18 20:39 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-07 12:05 [PATCH] ARM: expose PB1176 ROM in debugfs Linus Walleij
2010-07-18 19:47 ` Russell King - ARM Linux
2010-07-18 20:39 ` Linus Walleij [this message]
2010-09-03 21:38 ` Linus Walleij
2010-09-04 2:13 ` Marek Vasut
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