Re: [U-Boot] Enabling nand createbbt command

19 Mar 2012


      Charles
I looked at where I could set the startBlock and endBlock (btw -
start_block and end_block are used in cmd_onenand.c) and I saw that in
yaffscfg.c (flashDev->startBlock = 0; for yaffsVersion == 2).
Is this the place do change flashDev->endBlock = nBlocks - 1; to
flashDev->endBlock = N - 1, where N desired number of blocks?
Also, do you have or can point me to a comprehensive YAFFS2 commands
document?
Bud
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-----Original Message-----
From: Charles Manning [mailto:manningc2@actrix.gen.nz]
Sent: Thursday, 15 March 2012 6:24 a.m.
To: Bud Miljkovic
Cc: u-boot@lists.denx.de
Subject: Re: [U-Boot] Enabling nand createbbt command
On Wednesday 14 March 2012 17:00:58 Bud Miljkovic wrote:
...
Charles
That is interesting.  Any clue how to configure the start and end
blocks
...
manually?
Yes I do since I wrote yaffs :-).
Set the statrt_block and end_block (might be startBlock and endBlock)
values
as needed BEFORE the mount/init happens.
In a "normal" situation with mtd partitioning  these are set to 0 and
n-blocks-in-partition -1, but they can be set manually too.
-- Charles
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Bud
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-----Original Message-----
From: Charles Manning [mailto:manningc2@actrix.gen.nz]
Sent: Monday, 12 March 2012 8:20 a.m.
To: Bud Miljkovic
Cc: u-boot@lists.denx.de
Subject: Re: [U-Boot] Enabling nand createbbt command
Bud
Yaffs can work without mtdpart. To do that you just need to
configure
...
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the
start and end blocks manually instead of using the partition info
to
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do
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this.
On Friday 09 March 2012 13:58:48 Bud Miljkovic wrote:
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Thank you Scott and Fabio,
You help is much appreciated.
I will try to add the nand support for mx53 mainline.
However, what I am trying to do is to build a u-boot that
supports
...
...
NAND
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and have YAFFS2 as well and at moment I use the mx53_ard board
since
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...
...
this is very close to what my custom board will be.  I was able
to
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build
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such a version, using Freescale u-boot sources, which included
nand
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subsystem, and yaffs commands.  Then I needed to create
partitions
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in
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the nand and this is where i "discovered" I needed the support
of
...
...
...
...
mtdparts command.
So I, guess, I need to configure the u-boot for mtdparts
support.
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...
...
This
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is where I am at.
-Bud
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-----Original Message-----
From: Scott Wood
Sent: Friday, 9 March 2012 12:04 p.m.
To: Bud Miljkovic
Cc: Fabio Estevam;
Subject: Re: [U-Boot] Enabling nand createbbt command
I do expect mainline is better maintained and supported,
except
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for
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...
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missing particular features/hardware support that nobody ever
bothered
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to submit to mainline -- which in this case appears to be
hardware
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...
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that you care about, so unless you're prepared to do a fair
bit
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of
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...
...
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work to add support to mainline, I'd try again to find a
support
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...
...
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channel for your Freescale-provided U-Boot.  Or maybe we could
help
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...
...
you figure out what it is you want to do, instead of
scrubbing,
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if
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the
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...
answer doesn't depend on details of a non-standard U-Boot.
Oh, and if you're curious about my freescale.com e-mail
address, I
...
...
...
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work in a different part of the company and don't have i.MX
knowledge
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or contacts.
-Scott

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