From: Tom Rini <trini@ti.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] arm: add IPL support
Date: Thu, 5 Dec 2013 16:37:15 -0500 [thread overview]
Message-ID: <20131205213715.GQ420@bill-the-cat> (raw)
In-Reply-To: <1386129048-3324-1-git-send-email-dantesu@gmail.com>
On Wed, Dec 04, 2013 at 11:50:48AM +0800, Kuo-Jung Su wrote:
> Initial Program Loader (IPL) usually runs with .text and .rodata
> in ROM, while .data and .bss reside in RAM.
>
> This patch uses the AT keyword to specify load address,
> and a small code snippet in crt0.S to restore .data section
> at runtime.
>
> Example usage:
> Assume the target device has a 4KB ROM at 0x00000000 and a
> 4KB SRAM at 0xA0000000, the IPL/SPL config could be:
>
> #define CONFIG_SPL_MAX_SIZE 0x1000 /* text + data, no bss */
> #define CONFIG_SPL_TEXT_BASE 0x00000000
> #define CONFIG_SPL_DATA_BASE 0xA0000000
> #define CONFIG_SPL_STACK 0xA0001000
>
> Signed-off-by: Kuo-Jung Su <dantesu@gmail.com>
> Cc: Albert Aribaud <albert.u.boot@aribaud.net>
Can you provide an example user of this functionality? Thanks.
--
Tom
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 836 bytes
Desc: Digital signature
URL: <http://lists.denx.de/pipermail/u-boot/attachments/20131205/20ea741e/attachment.pgp>
next prev parent reply other threads:[~2013-12-05 21:37 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-04 3:50 [U-Boot] [PATCH] arm: add IPL support Kuo-Jung Su
2013-12-05 21:37 ` Tom Rini [this message]
2013-12-09 8:07 ` Kuo-Jung Su
2013-12-10 14:30 ` Tom Rini
2013-12-11 2:43 ` Kuo-Jung Su
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=20131205213715.GQ420@bill-the-cat \
--to=trini@ti.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox