[U-Boot-Users] AT91 NAND om AT91SAM9260EK

[Ulf Samuelsson <ulf@atmel.com>]

link: www.avrfreaks.net
----- Original Message ----- 
From: "Michel Benoit" <murpme@gmail.com>
To: <u-boot-users@lists.sourceforge.net>
Sent: Sunday, February 11, 2007 12:49 PM
Subject: Re: [U-Boot-Users] AT91 NAND om AT91SAM9260EK


> Hello.
>
> As a current user of Atmel's AT91SAM9260, I encourage the effort to
> get at91sam926x
> inserted into the main u-boot branch.  I'm willing help test u-boot on
> the at91sam9260ek board.
>
> Michel

I expect that we should have it merged somewhere late this century
since even after 50-100 emails there is no agreement how to
take two almost identical files and merge into one and then split
the single file into a cpu dependent and a cpu independent file.

Best Regards
Ulf Samuelsson


> On 2/10/07, u-boot-users-request at lists.sourceforge.net
> <u-boot-users-request@lists.sourceforge.net> wrote:
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>> Today's Topics:
>>
>>    1. Re: BDI2000 config for MPC8360rev2 with DDR2 memory?
>>       (Medve Emilian-EMMEDVE1)
>>    2. Re: AT91 NAND om AT91SAM9260EK (Haavard Skinnemoen)
>>    3. Re: AT91 NAND om AT91SAM9260EK (Ulf Samuelsson)
>>    4. Re: AT91 NAND om AT91SAM9260EK (Haavard Skinnemoen)
>>    5. Re: AT91 NAND om AT91SAM9260EK (Ulf Samuelsson)
>>    6. 1 digital camera manufacturer. (Goldberg Rachel)
>>
>>
>> ----------------------------------------------------------------------
>>
>> Message: 1
>> Date: Fri, 9 Feb 2007 15:22:55 -0700
>> From: "Medve Emilian-EMMEDVE1" <Emilian.Medve@freescale.com>
>> Subject: Re: [U-Boot-Users] BDI2000 config for MPC8360rev2 with DDR2
>>         memory?
>> To: <u-boot-users@lists.sourceforge.net>
>> Message-ID:
>> 
>> <598D5675D34BE349929AF5EDE9B03E27C181C6@az33exm24.fsl.freescale.net>
>> Content-Type: text/plain;       charset="us-ascii"
>>
>> Hi Steve,
>>
>>
>> You could get the configuration files from Abatron
>> (ftp://83.125.32.26/bdigdb/config/powerpc/mpc83xx/). That should be
>> enough to just flash the board.
>>
>>
>> Cheers,
>> Emil.
>>
>>
>> This e-mail, and any associated attachments have been classified as:
>> ====================================================================
>> [x] Public
>> [ ] Freescale Semiconductor Internal Use Only
>> [ ] Freescale Semiconductor Confidential Proprietary
>>
>>
>> -----Original Message-----
>> From: u-boot-users-bounces at lists.sourceforge.net
>> [mailto:u-boot-users-bounces at lists.sourceforge.net] On Behalf Of Steven
>> Hein
>> Sent: Friday, February 09, 2007 4:06 PM
>> To: u-boot-users at lists.sourceforge.net
>> Subject: [U-Boot-Users] BDI2000 config for MPC8360rev2 with DDR2 memory?
>>
>> Hi all--
>>
>> I just received a new custom board with an MPC8360r2 with 128MB DDR2
>> memory on the board.    My 8360EMDS board has a rev 1.2 part with DDR,
>> so I know I need a different set of init registers in my BDI2000 config.
>> If anyone has a similar config and could send me a BDI2000 config file
>> for it, that would be AWESOME!     In the mean time, I'm trying to
>> flash u-boot directly into my flash part using the BDI2000 and let it
>> initialize my memory for me.    But this is all fairly uncharted
>> territory for me, so a BDI config would be helpful.
>>
>> Thanks!
>> Steve
>>
>> --
>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> Steve Hein (ssh at sgi.com)              Engineering Diagnostics/Software
>> Silicon Graphics, Inc.
>> 1168 Industrial Blvd.                 Phone: (715) 726-8410
>> Chippewa Falls, WI 54729              Fax:   (715) 726-6715
>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>
>>
>> ------------------------------------------------------------------------
>> -
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>> ------------------------------
>>
>> Message: 2
>> Date: Fri, 9 Feb 2007 23:58:16 +0100
>> From: "Haavard Skinnemoen" <hskinnemoen@gmail.com>
>> Subject: Re: [U-Boot-Users] AT91 NAND om AT91SAM9260EK
>> To: "Ulf Samuelsson" <ulf@atmel.com>
>> Cc: u-boot-users at lists.sourceforge.net, Wolfgang Denk <wd@denx.de>,
>>         Haavard Skinnemoen <hskinnemoen@atmel.com>
>> Message-ID:
>>         <1defaf580702091458p564ba747qc235ebe3601df497@mail.gmail.com>
>> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>>
>> On 2/9/07, Ulf Samuelsson <ulf@atmel.com> wrote:
>> > > The only thimg I'm not really happy with (whithout having any  better
>> > > suggestion)  is  to  move this into drivers - drivers is intended for
>> > > general, CPU and board independent  code,  where  this  is  obviously
>> > > specific to a certain class of processors.
>>
>> It's somewhat cpu- and board-independent. at32 and at91 are based on
>> two different architectures, so they don't have any directories in
>> common apart from the ones common to everyone.
>>
>> We could perhaps create a drivers/atmel subdirectory or, as Ulf
>> suggests, boards/atmel/drivers or cpu/atmel/drivers.
>>
>> > I think at45.c is CPU independent, but spi.c is closely tied to Atmel
>> > processors.
>> > spi.c consist of:
>> >
>> > SpiInit    - Clearly CPU dependent due to pin mux.
>> >                 Only reason that sam926x chips can use a common file
>> >                 is the #ifdefs...
>>
>> Hmm...how about moving the cpu-dependent bits into inline functions
>> somewhere under asm/arch? For example
>>
>> static inline void portmux_enable_spi(unsigned int id)
>> {
>>         /* do chip-dependent PIO stuff here */
>> }
>>
>> asm/arch is chip-specific so there shouldn't be any need for #ifdefs 
>> there.
>>
>> > While the functions in at45.c are called AT91xxx they really do not
>> > depend on any specific SPI H/W and it can thus be used
>> > with any chip which implements the SPI API defined
>> > by cpu/arm920t/at91rm9200/spi.c
>>
>> Yeah, that's why the AT91 prefixing should be dropped. But that's for
>> much later.
>>
>> Btw, looks like there's another SPI API in u-boot as well. Probably a
>> good idea to convert the at91/atmel spi stuff over to implementing
>> that one. No point in having several APIs doing the same thing, and
>> the other API uses the much more sensible function name spi_xfer for
>> doing SPI transfers, as opposed to AT91F_SpiWrite which is totally
>> misleading since it's being used for reading as well.
>>
>> > If you let it remain in the board directories as is, then
>> > you duplicate this for each board.
>>
>> I don't think anyone wants that. Although you're the one suggesting we
>> add a _third_ identical driver ;-)
>>
>> > I think a good place for any driver stuff which is useable
>> > both by at91 and ap7xxx chips could be an
>> > board/atmel/drivers directory.
>> > An alternative would be a cpu/atmel/drivers directory.
>>
>> Are any other drivers organized this way?
>>
>> > I do not think it belongs inside the drivers directory.
>>
>> I'm sorry but I fail to see why not. There are several other
>> platform-specific drivers in there. And I don't really see the big
>> advantage of spreading drivers around all over the place...
>>
>> > By putting spi.c in drivers you have to be really careful not to 
>> > compile
>> > this for chips which does not have this SPI macro.
>>
>> Yeah, but if it's protected by an easy-to-understand #ifdef that
>> shouldn't be a problem. Although I don't think we should call it spi.c
>> then. It should be atmel_spi.c or something.
>>
>> > The cpu/arm920t/at91rm9200/spi.c should at least contain the spi init.
>>
>> Or do it in a chip-specific header file.
>>
>> > I still would like to have the complete sam926x patch set
>> > implemented before we start to "play" with it
>>
>> Yeah, but I still think some preparatory patches are a good thing in
>> order to make things easier later on.
>>
>> Haavard
>>
>>
>>
>> ------------------------------
>>
>> Message: 3
>> Date: Sat, 10 Feb 2007 00:20:21 +0100
>> From: "Ulf Samuelsson" <ulf@atmel.com>
>> Subject: Re: [U-Boot-Users] AT91 NAND om AT91SAM9260EK
>> To: "Haavard Skinnemoen" <hskinnemoen@gmail.com>
>> Cc: u-boot-users at lists.sourceforge.net, Wolfgang Denk <wd@denx.de>,
>>         Haavard Skinnemoen <hskinnemoen@atmel.com>
>> Message-ID: <012b01c74ca1$8ee35fe0$01c4af0a@Glamdring>
>> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
>>         reply-type=response
>>
>>
>> >> I still would like to have the complete sam926x patch set
>> >> implemented before we start to "play" with it
>> >
>> > Yeah, but I still think some preparatory patches are a good thing in
>> > order to make things easier later on.
>>
>> I only see two things as a result of those prepatory patches.
>>
>> 1) Bugs
>> 2) Delays in availability
>>
>> I am not questioning anything you want to do, just the timing.
>> If we follow your recommendation you will have a bunch
>> of untested board patches in the mainstream u-boot,
>> for the sam926x.
>>
>> I do not have the time to thoroughly test any changes
>> you do (I dont even have an at91sam9263 board).
>>
>> If we go my way, then we should be able to have *tested* sam926x
>> support inside U-boot very soon, and while this results
>> in duplication of a small part of the spi code on the source level
>> (no addition to the binary) I believe that
>> the benefit to the community of at91sam926x users
>> of having native support in U-Boot outweighs this duplication a lot.
>>
>> The number of users far outweisghs the number of implementers
>> and I think that we need to look at it from their point of view.
>>
>> We are not introducing any new interfaces here,
>> just using the existing interfaces.
>> This means that it will not be harder to do any modifications
>> *after* the sam926x patches are applied.
>> It will be easier since you have better overview.
>>
>> The only alternative I can see is that you take over
>> the responsibility for both AVR32 and AT91 U-boot
>> and test all modifications on all boards before submission
>> - Still with availability of working solution as the highest priority.
>>
>>
>> >
>> > Haavard
>>
>>
>> Best Regards
>> Ulf Samuelsson
>>
>>
>>
>> ------------------------------
>>
>> Message: 4
>> Date: Sat, 10 Feb 2007 00:42:27 +0100
>> From: "Haavard Skinnemoen" <hskinnemoen@gmail.com>
>> Subject: Re: [U-Boot-Users] AT91 NAND om AT91SAM9260EK
>> To: "Ulf Samuelsson" <ulf@atmel.com>
>> Cc: u-boot-users at lists.sourceforge.net, Wolfgang Denk <wd@denx.de>,
>>         Haavard Skinnemoen <hskinnemoen@atmel.com>
>> Message-ID:
>>         <1defaf580702091542m19034fddu9e1d3eb4fccf0d64@mail.gmail.com>
>> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>>
>> On 2/10/07, Ulf Samuelsson <ulf@atmel.com> wrote:
>> > The number of users far outweisghs the number of implementers
>> > and I think that we need to look at it from their point of view.
>>
>> Would help a lot to have some of those users help with testing though.
>>
>> > We are not introducing any new interfaces here,
>> > just using the existing interfaces.
>> > This means that it will not be harder to do any modifications
>> > *after* the sam926x patches are applied.
>> > It will be easier since you have better overview.
>>
>> Whatever. Please let me know when you're ready to continue.
>>
>> > The only alternative I can see is that you take over
>> > the responsibility for both AVR32 and AT91 U-boot
>> > and test all modifications on all boards before submission
>> > - Still with availability of working solution as the highest priority.
>>
>> I don't think that's going to happen. Besides, having the same person
>> implement and test the code usually doesn't work very well anyway, so
>> if we're going to do this we need people willing to test
>> probably-working-but-still-experimental stuff.
>>
>> I'm of course not saying that I can't be bothered to test my
>> modifications before submitting, but relying on me to implement _and_
>> test everything on all configurations is just insane.
>>
>> Haavard
>>
>>
>>
>> ------------------------------
>>
>> Message: 5
>> Date: Sat, 10 Feb 2007 01:10:55 +0100
>> From: "Ulf Samuelsson" <ulf@atmel.com>
>> Subject: Re: [U-Boot-Users] AT91 NAND om AT91SAM9260EK
>> To: "Haavard Skinnemoen" <hskinnemoen@gmail.com>
>> Cc: u-boot-users at lists.sourceforge.net, Wolfgang Denk <wd@denx.de>,
>>         Haavard Skinnemoen <hskinnemoen@atmel.com>
>> Message-ID: <014701c74ca8$920caf30$01c4af0a@Glamdring>
>> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
>>         reply-type=original
>>
>> > On 2/10/07, Ulf Samuelsson <ulf@atmel.com> wrote:
>> >> The number of users far outweisghs the number of implementers
>> >> and I think that we need to look at it from their point of view.
>> >
>> > Would help a lot to have some of those users help with testing though.
>> >
>> >> We are not introducing any new interfaces here,
>> >> just using the existing interfaces.
>> >> This means that it will not be harder to do any modifications
>> >> *after* the sam926x patches are applied.
>> >> It will be easier since you have better overview.
>> >
>> > Whatever. Please let me know when you're ready to continue.
>> >
>>
>> I am ready to continue as soon as at45_split is applied.
>> It is a real simple patch, it divides one more or less duplicated file 
>> into
>> two files.
>>
>> If I try to apply any sam926x patches without that,
>> then It will crash the at91rm9200dk and cmc_pu2 board support.
>>
>> Once this patch is applied, I can submit the at91sam926x patches
>> and if/when they are accepted, then we have accomplished the most
>> important goal to Atmel customers,
>> which is that *tested* sam926x support is available from the primary
>> U-Boot location and that you can build both at91 and avr32
>> from the same source code.
>>
>> I consider all other activities secondary.
>>
>> Best Regards
>> Ulf Samuelsson                ulf at atmel.com
>> Atmel Nordic AB
>> Mail:  Box 2033, 174 02 Sundbyberg, Sweden
>> Visit:  Kavalleriv?gen 24, 174 58 Sundbyberg, Sweden
>> Phone +46 (8) 441 54 22     Fax +46 (8) 441 54 29
>> GSM    +46 (706) 22 44 57
>>
>> Technical support when I am not available:
>> AT89 C51 Applications Group: mailto:micro.hotline at nto.atmel.com
>> AT90 AVR Applications Group: mailto:avr at atmel.com
>> AT91 ARM Applications Group: mailto:at91support at atmel.com
>> FPSLIC Application Group: mailto:fpslic at atmel.com Best AVR
>>
>>
>>
>>
>> ------------------------------
>>
>> Message: 6
>> Date: Sat, 10 Feb 2007 02:27:15 +0200
>> From: Goldberg Rachel <krihl@canpub.fr>
>> Subject: [U-Boot-Users] 1 digital camera manufacturer.
>> To: u-boot-users at lists.sourceforge.net
>> Message-ID: <45CD1163.1090109@canpub.fr>
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