From: <Tudor.Ambarus@microchip.com>
To: <sr@denx.de>, <linux-mtd@lists.infradead.org>,
<miquel.raynal@bootlin.com>
Subject: Re: MT25Q Advanced Sector Protection support
Date: Thu, 15 Apr 2021 09:40:05 +0000 [thread overview]
Message-ID: <72427f10-4a3a-a0a4-f429-6638f9d428d0@microchip.com> (raw)
In-Reply-To: <f59dc821-22fe-27cf-b93d-147709d64983@denx.de>
On 4/15/21 12:20 PM, Stefan Roese wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
>
> Hi,
Hi,
>
> I'm right now working on a board equipped with an MT25QU128ABA1ESE.
> And after doing some intensive QSPI NOR tests, one sector (at 0x40000)
> seems to be permanently locked. The normal unlocking does not seem to
> help:
>
> # flash_eraseall -u /dev/mtd0
have you tried to unlock it before erasing? You can use flash_unlock.
> flash_eraseall has been replaced by `flash_erase <mtddev> 0 0`; please
> use it
> Erasing 64 Kibyte @ 40000 -- 22 % complete libmtd: error!: MEMERASE64
> ioctl failed for eraseblock 4 (mtd0)
> error 5 (Input/output error)
> flash_erase: error!: /dev/mtd0: MTD Erase failure
> error 5 (Input/output error)
> Erasing 64 Kibyte @ 110000 -- 100 % complete
>
> My best guess right now is that somehow the nonvolatile locking via the
> advanced sector protection is active and locking this sector.
>
> Does anyone have some ideas on how to continue here? Is there some
If it's indeed about the individual block protection, you'll have to
read the register that describes which registers are locked.
> ongoing work to support the Micron advanced sector protection in Linux?
I'm adding support for individual block protection on sst26 flashes,
which should be similar.
Cheers,
ta
> Or did I miss something trivial perhaps?
>
> Thanks,
> Stefan
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next prev parent reply other threads:[~2021-04-15 9:41 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-15 9:20 MT25Q Advanced Sector Protection support Stefan Roese
2021-04-15 9:40 ` Tudor.Ambarus [this message]
2021-04-15 9:44 ` Stefan Roese
2021-04-15 10:05 ` Tudor.Ambarus
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