All of lore.kernel.org
 help / color / mirror / Atom feed
From: "Pali Rohár" <pali@kernel.org>
To: Tom Rini <trini@konsulko.com>
Cc: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>,
	maemo-leste@lists.dyne.org, u-boot@lists.denx.de,
	Merlijn Wajer <merlijn@wizzup.org>
Subject: Re: [maemo-leste] [PATCH] arm: Remove nokia_rx51 board
Date: Wed, 16 Jun 2021 23:16:32 +0200	[thread overview]
Message-ID: <20210616211632.xxoo3vu6mlyxg5wr@pali> (raw)
In-Reply-To: <20210616211213.GZ9516@bill-the-cat>

On Wednesday 16 June 2021 17:12:13 Tom Rini wrote:
> Wait, why is thumb disabled?  That's something I'd really like to know
> why on as my first guess is there's units with old enough cores that
> have some thumb errata maybe?

IIRC we disabled at time when N900 support was merged into U-Boot (about
10 years ago) as built binary did not work on real N900 HW. Non-thumb
build work fine.

I thought it was due to thumb errata but yesterday I was told that thumb
errata affects running system only when virtual memory and context
switches are used. And correct me if I'm wrong, but u-boot is not using
virtual memory mapping and neither multiprocessing context switches.

So it looks like that at that time (10 years ago) there was another bug
in u-boot which caused that thumb build was non-working.

  reply	other threads:[~2021-06-16 21:16 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-19  1:26 [PATCH] arm: Remove nokia_rx51 board Tom Rini
2021-05-19 13:27 ` Pali Rohár
2021-05-19 14:27   ` Oleh Kravchenko
2021-05-19 15:03     ` Pali Rohár
2021-05-19 15:52   ` Tom Rini
2021-05-21 14:44     ` Tom Rini
2021-05-21 21:36       ` Pali Rohár
2021-05-21 22:26         ` Tom Rini
2021-06-15  5:40         ` [maemo-leste] " Ivaylo Dimitrov
2021-06-15 12:34           ` Tom Rini
2021-06-16  6:02             ` Ivaylo Dimitrov
2021-06-16 11:52               ` Adam Ford
2021-06-16 11:55                 ` Pali Rohár
2021-06-16 12:10               ` Tom Rini
2021-06-16 12:13                 ` Tom Rini
2021-06-16 17:25                   ` Ivaylo Dimitrov
2021-06-16 17:37                     ` Tom Rini
2021-06-16 20:44                       ` Merlijn Wajer
2021-06-16 21:16                         ` Tom Rini
2021-06-16 21:03                       ` Ivaylo Dimitrov
2021-06-16 21:12                         ` Tom Rini
2021-06-16 21:16                           ` Pali Rohár [this message]
2021-06-16 21:20                             ` Tom Rini
2021-06-16 21:35                               ` Pali Rohár
2021-06-17  7:18                           ` Ivaylo Dimitrov
2021-06-17 18:21                             ` Tom Rini
2021-06-16 17:21                 ` Ivaylo Dimitrov
2021-05-19 19:06 ` Pavel Machek
2021-05-19 20:02   ` Tom Rini

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210616211632.xxoo3vu6mlyxg5wr@pali \
    --to=pali@kernel.org \
    --cc=ivo.g.dimitrov.75@gmail.com \
    --cc=maemo-leste@lists.dyne.org \
    --cc=merlijn@wizzup.org \
    --cc=trini@konsulko.com \
    --cc=u-boot@lists.denx.de \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.