From: Scott Wood <scottwood@freescale.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 2/2] OMAP3: Add SPL support to Beagleboard
Date: Thu, 27 Oct 2011 18:22:24 -0500 [thread overview]
Message-ID: <4EA9E7B0.8030407@freescale.com> (raw)
In-Reply-To: <4EA9E5B1.3080801@ti.com>
On 10/27/2011 06:13 PM, Tom Rini wrote:
> On 10/27/2011 04:10 PM, Igor Grinberg wrote:
>> On 10/27/2011 11:29 PM, Tom Rini wrote:
>>> On 10/27/2011 02:18 PM, Igor Grinberg wrote:
>>>> On 10/26/2011 11:13 PM, Tom Rini wrote:
> [snip]
>>>>> +/* nand_command: Send a flash command to the flash chip */
>>>>> +static void nand_command(unsigned char command)
>>>>> +{
>>>>> + WRITE_NAND_COMMAND(command, NAND_ADDR);
>>>>> +
>>>>> + if (command == NAND_CMD_RESET) {
>>>>> + unsigned char ret_val;
>>>>> + nand_command(NAND_CMD_STATUS);
>>>>> + do {
>>>>> + ret_val = READ_NAND(NAND_ADDR);/* wait till ready */
>>>>> + } while ((ret_val & 0x40) != 0x40);
>>>> You should be using some kind of timeout, so you will not stuck in here
>>>> without being noticed.
>>> OK. I've been wondering if we shouldn't somehow make a
>>> not-tied-to-full-mtd nand_command more available since I suspect a few
>>> other boards will be in a similar situation, for probing early on.
>>
>> That would be much better solution.
>
> (Background if you've otherwise ignored the thread, on some omap3 boards
> we need to take a whack at NAND to see what DDR we have)
>
> OK, so, Scott, where would you suggest we put a very trivial set of nand
> infrastructure we need outside of the scope of loading u-boot itself
> from NAND ?
Can the SPL code be used (not an actual SPL build, just the NAND code
associated with it)?
-Scott
next prev parent reply other threads:[~2011-10-27 23:22 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-26 21:13 [U-Boot] [PATCH RFT 0/2] Beagleboard SPL support Tom Rini
2011-10-26 21:13 ` [U-Boot] [PATCH 1/2] OMAP3 SPL: Rework memory initalization and devkit 8000 support Tom Rini
2011-10-27 20:46 ` Igor Grinberg
2011-10-27 21:00 ` Tom Rini
2011-10-27 21:27 ` Igor Grinberg
2011-10-26 21:13 ` [U-Boot] [PATCH 2/2] OMAP3: Add SPL support to Beagleboard Tom Rini
2011-10-27 12:46 ` Premi, Sanjeev
2011-10-27 17:08 ` Tom Rini
2011-10-27 21:18 ` Igor Grinberg
2011-10-27 21:27 ` Wolfgang Denk
2011-10-27 23:02 ` Igor Grinberg
2011-10-27 23:19 ` Scott Wood
2011-10-27 23:35 ` Igor Grinberg
2011-10-27 21:29 ` Tom Rini
2011-10-27 23:10 ` Igor Grinberg
2011-10-27 23:13 ` Tom Rini
2011-10-27 23:22 ` Scott Wood [this message]
2011-10-27 23:33 ` Tom Rini
2011-10-28 16:00 ` Scott Wood
2011-10-28 16:29 ` Tom Rini
2011-10-28 16:42 ` Scott Wood
2011-10-28 16:56 ` Tom Rini
2011-11-04 16:50 ` Tom Rini
2011-11-01 14:46 ` Tom Rini
-- strict thread matches above, loose matches on Subject: below --
2011-10-26 20:50 Tom Rini
2011-10-26 20:52 ` 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=4EA9E7B0.8030407@freescale.com \
--to=scottwood@freescale.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