From: Jeroen Hofstee <jeroen@myspectrum.nl>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH v2 3/4] ARM: use r9 for gd
Date: Sat, 17 Aug 2013 15:51:37 +0200 [thread overview]
Message-ID: <520F7FE9.3000908@myspectrum.nl> (raw)
In-Reply-To: <520F4514.1000804@myspectrum.nl>
On 08/17/2013 11:40 AM, Jeroen Hofstee wrote:
> On 08/14/2013 08:25 PM, Jeroen Hofstee wrote:
>> To be more EABI compliant and as a preparation for building
>> with clang, use the platform-specific r9 register for gd
>> instead of r8.
>>
>> note: The FIQ is not updated since it is not used in u-boot,
>> and under discussion for the time being.
>>
>> The following checkpatch warning is ignored:
>> WARNING: Use of volatile is usually wrong: see
>> Documentation/volatile-considered-harmful.txt
>>
>> cc: Albert ARIBAUD <albert.u.boot@aribaud.net>
>> Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
>> ---
>> arch/arm/config.mk | 2 +-
>> arch/arm/include/asm/global_data.h | 2 +-
>> arch/arm/lib/crt0.S | 16 ++++++++--------
>> 3 files changed, 10 insertions(+), 10 deletions(-)
>>
>
> This patch assumes only crt0.S sets the register used for
> gd in asm. I just noticed cpu/armv7/lowlevel_init.S does set gd
> manually, so all users of the common board.c are likely
> bricked with the patch as is. Looking into it....
Looking into this, it seems lowlevel_init.S could simply be removed
by placing the call to s_init at a better spot. As Tom pointed out,
this is already being discussed at [1]. As that is a topic of its own
I intend to simply change lowlevel_init.S to us r9 in this patchset.
Regards,
Jeroen
[1]
http://u-boot.10912.n7.nabble.com/PATCH-1-3-arm-spl-Fix-SPL-booting-for-OMAP3-td156990.html
next prev parent reply other threads:[~2013-08-17 13:51 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-11 20:58 [U-Boot] [PATCH 0/3] ARM: use r9 for gd instead of r8 Jeroen Hofstee
2013-08-11 20:58 ` [U-Boot] [PATCH 1/3] ARM: make reserving the gd register a make variable Jeroen Hofstee
2013-08-11 20:58 ` [U-Boot] [PATCH 2/3] ARM,relocate: do not use r9 Jeroen Hofstee
2013-08-11 20:58 ` [U-Boot] [PATCH 3/3] ARM: use r9 for gd Jeroen Hofstee
2013-08-12 5:53 ` Wolfgang Denk
2013-08-12 14:44 ` Albert ARIBAUD
2013-08-12 15:23 ` Wolfgang Denk
2013-08-13 19:41 ` Jeroen Hofstee
2013-08-11 22:08 ` [U-Boot] [PATCH 0/3] ARM: use r9 for gd instead of r8 Benoît Thébaudeau
2013-08-12 5:49 ` Albert ARIBAUD
2013-08-13 19:36 ` Jeroen Hofstee
2013-08-14 18:25 ` [U-Boot] [PATCH v2 0/4] " Jeroen Hofstee
2013-08-14 18:25 ` [U-Boot] [PATCH v2 1/4] ARM: make reserving the gd register a make variable Jeroen Hofstee
2013-08-17 13:55 ` Jeroen Hofstee
2013-09-19 6:57 ` Albert ARIBAUD
2013-09-19 16:54 ` Jeroen Hofstee
2013-08-14 18:25 ` [U-Boot] [PATCH v2 2/4] ARM,relocate: do not use r9 Jeroen Hofstee
2013-08-14 18:25 ` [U-Boot] [PATCH v2 3/4] ARM: use r9 for gd Jeroen Hofstee
2013-08-17 9:40 ` Jeroen Hofstee
2013-08-17 13:51 ` Jeroen Hofstee [this message]
2013-08-19 3:08 ` Simon Glass
2013-08-19 17:32 ` Jeroen Hofstee
2013-08-21 16:22 ` Jeroen Hofstee
2013-08-21 23:44 ` Simon Glass
2013-08-14 18:25 ` [U-Boot] [PATCH v2 4/4] README: update ARM register usage Jeroen Hofstee
2013-09-21 12:04 ` [U-Boot] [PATCH v3 0/3] ARM: use r9 for gd instead of r8 Jeroen Hofstee
2013-09-21 12:04 ` [U-Boot] [PATCH v3 1/3] ARM,relocate: do not use r9 Jeroen Hofstee
2013-09-21 12:04 ` [U-Boot] [PATCH v3 2/3] ARM: use r9 for gd Jeroen Hofstee
2013-09-21 15:30 ` Jeroen Hofstee
2013-09-21 12:04 ` [U-Boot] [PATCH v3 3/3] README: update ARM register usage Jeroen Hofstee
2013-09-23 16:56 ` [U-Boot] [PATCH v3 0/3] ARM: use r9 for gd instead of r8 Albert ARIBAUD
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=520F7FE9.3000908@myspectrum.nl \
--to=jeroen@myspectrum.nl \
--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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox