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From: Sascha Hauer <s.hauer@pengutronix.de>
To: Krzysztof Halasa <khc@pm.waw.pl>
Cc: barebox@lists.infradead.org
Subject: Re: my IXP4xx-related and other patches
Date: Tue, 21 Dec 2010 10:17:15 +0100	[thread overview]
Message-ID: <20101221091715.GX6017@pengutronix.de> (raw)
In-Reply-To: <m362uodqms.fsf@intrepid.localdomain>

Hi Krzysztof,

On Mon, Dec 20, 2010 at 11:30:03PM +0100, Krzysztof Halasa wrote:
> Hello,
> 
> I've been working a bit on IXP4xx support lately and it seems I'm at the
> point I can now boot Barebox on a Goramo Multilink routers
> (IXP425-based). It requires several patches (will post them shortly) and
> NPE microcode files from Intel (or from elsewhere, the regular non-VLAN
> microcode v. 2.4 is needed, i.e., same as with Linux).

Nice ;)

I applied all patches except the malloc patch and the ixp4xx core patch
which need minor fixups.

> 
> The binary microcode must be appended to Barebox at correct offsets for
> the NPE driver to find it, details are in board support file
> (arch/arm/boards/multilink/multilink.c):
> 
> #define BAREBOX_START        0x00000
> #define BAREBOX_LENGTH       0x34000
> #define NPE_A_START          (BAREBOX_START + BAREBOX_LENGTH)
> #define NPE_A_LENGTH         0x05000
> #define NPE_B_START          (NPE_A_START + NPE_A_LENGTH)
> #define NPE_B_LENGTH         0x03000
> #define NPE_C_START          (NPE_B_START + NPE_B_LENGTH)
> #define NPE_C_LENGTH         0x04000
> #define NPE_ENV0_START       (NPE_C_START + NPE_C_LENGTH)
> #define NPE_ENV0_LENGTH      0x20000
> 
> when passed to Linux:
> Creating XXX MTD partitions on "IXP4XX-Flash.0":
> 0x000000000000-0x000000034000 : "barebox"
> 0x000000034000-0x000000039000 : "NPE-A"
> 0x000000039000-0x00000003c000 : "NPE-B"
> 0x00000003c000-0x000000040000 : "NPE-C"
> 0x000000040000-0x000000060000 : "env0"

As said in the comment to patch, we need to at least document this.

> 
> User-available flash area starts at 0x60000.
> 
> All this IXP4xx code is big-endian only. Too much work with LE (NPE
> coprocessors would need buffer byte swapping, flash (EXP bus) would need
> 16-bit word swapping etc). Big-endian Barebox can load both LE and BE
> Linux anyway ("bootz" only at the moment).

Yes, big endian is enough for now. It's good to have a big endian ARM
machine in the tree.

Sascha

-- 
Pengutronix e.K.                           |                             |
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  parent reply	other threads:[~2010-12-21  9:18 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-12-20 22:30 Krzysztof Halasa
2010-12-20 22:40 ` [PATCH 1] Delete unused file common/dlmalloc.src Krzysztof Halasa
2010-12-21  9:34   ` Sascha Hauer
2010-12-20 22:42 ` [PATCH 2] Remove unused eth_get_name() prototype Krzysztof Halasa
2010-12-20 22:44 ` [PATCH 3] Flash CFI: removed unused 'size' variable Krzysztof Halasa
2010-12-20 22:45 ` [PATCH 4] Fix help text for "loadb" and "loady" commands Krzysztof Halasa
2010-12-20 22:54 ` [PATCH 5] Fix error handling with malloc, memalign etc. Memalign() can't fail now Krzysztof Halasa
2010-12-21  8:58   ` Sascha Hauer
2010-12-22  0:58   ` Jean-Christophe PLAGNIOL-VILLARD
2010-12-22 19:00     ` Krzysztof Halasa
2010-12-23 11:25       ` Krzysztof Halasa
2010-12-23 10:36     ` Sascha Hauer
2010-12-20 22:58 ` [PATCH 6] ARM: support big/little endian switching in "bootz" Krzysztof Halasa
2010-12-21  7:41   ` Sascha Hauer
2010-12-22  1:00   ` Jean-Christophe PLAGNIOL-VILLARD
2010-12-22 18:55     ` Krzysztof Halasa
2010-12-23 10:47       ` Sascha Hauer
2010-12-20 23:01 ` [PATCH 7] Fix top-level Makefile to work with GNU make 3.82 Krzysztof Halasa
2010-12-20 23:02 ` [PATCH 8] Cosmetic fixes, including format attributes for printf() and friends Krzysztof Halasa
2010-12-20 23:04 ` [PATCH 9] ARM: support big-endian processors Krzysztof Halasa
2010-12-20 23:06 ` [PATCH 10] ARM: Add support for IXP4xx CPU and for Goramo Multilink router platform Krzysztof Halasa
2010-12-21  7:42   ` Belisko Marek
2010-12-21  9:25     ` Sascha Hauer
2010-12-21  9:30     ` Juergen Beisert
2010-12-21  8:35   ` Sascha Hauer
2010-12-22  0:48     ` Krzysztof Halasa
2010-12-22  0:57   ` Jean-Christophe PLAGNIOL-VILLARD
2010-12-22 12:46     ` Sascha Hauer
2010-12-22 19:36       ` Krzysztof Halasa
2010-12-23  3:26         ` Jean-Christophe PLAGNIOL-VILLARD
2010-12-23 11:42           ` Krzysztof Halasa
2010-12-22 19:13     ` Krzysztof Halasa
2010-12-20 23:08 ` [PATCH 11] Silence few warnings Krzysztof Halasa
2010-12-20 23:10 ` [PATCH 12] Fix NOR CFI flash driver to work on big endian systems Krzysztof Halasa
2010-12-22  1:01   ` Jean-Christophe PLAGNIOL-VILLARD
2010-12-22 12:48     ` Sascha Hauer
2010-12-20 23:14 ` [PATCH 13] Fix usage of __LITTLE_ENDIAN macro Krzysztof Halasa
2010-12-21  9:17 ` Sascha Hauer [this message]
2010-12-22  0:51 ` [PATCH 5a] Fix error handling with malloc, memalign etc. Introduce xmemalign() Krzysztof Halasa
2010-12-22  0:53 ` [PATCH 6a] ARM: support big/little endian switching in "bootz" Krzysztof Halasa
2010-12-22  0:55 ` [PATCH 10a] ARM: Add support for IXP4xx CPU and for Goramo Multilink router platform Krzysztof Halasa

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