From: Juergen Beisert <jbe@pengutronix.de>
To: barebox@lists.infradead.org
Cc: Juergen Beisert <juergen@kreuzholzen.de>
Subject: [PATCH 5/6] S3C24xx/NFC: Setup ECC handling in accordance to the kernel
Date: Sat, 12 Mar 2011 20:14:56 +0100 [thread overview]
Message-ID: <1299957297-8539-6-git-send-email-jbe@pengutronix.de> (raw)
In-Reply-To: <1299957297-8539-1-git-send-email-jbe@pengutronix.de>
From: Juergen Beisert <juergen@kreuzholzen.de>
Do the same ECC handling and ECC size in barebox than the kernel does.
Currently its done for S3C2440 based systems only, as I have no idea how to
manage it on a S3C2410 based system.
Signed-off-by: Juergen Beisert <jbe@pengutronix.de>
---
drivers/mtd/nand/nand_s3c2410.c | 21 +++++++++++++++++----
1 files changed, 17 insertions(+), 4 deletions(-)
diff --git a/drivers/mtd/nand/nand_s3c2410.c b/drivers/mtd/nand/nand_s3c2410.c
index 84f6061..2ae9861 100644
--- a/drivers/mtd/nand/nand_s3c2410.c
+++ b/drivers/mtd/nand/nand_s3c2410.c
@@ -450,11 +450,24 @@ static int s3c24x0_nand_probe(struct device_d *dev)
chip->ecc.correct = s3c2410_nand_correct_data;
chip->ecc.hwctl = s3c2410_nand_enable_hwecc;
- /* our hardware capabilities */
+ /*
+ * Setup ECC handling in accordance to the kernel
+ * - 1 times 512 bytes with 24 bit ECC for small page
+ * - 8 times 256 bytes with 24 bit ECC each for large page
+ */
chip->ecc.mode = NAND_ECC_HW;
- chip->ecc.size = 512;
- chip->ecc.bytes = 3;
- chip->ecc.layout = &nand_hw_eccoob;
+ chip->ecc.bytes = 3; /* always 24 bit ECC per turn */
+#ifdef CONFIG_CPU_S3C2440
+ if (readl(host->base) & 0x8) {
+ /* large page (2048 bytes per page) */
+ chip->ecc.size = 256;
+ } else
+#endif
+ {
+ /* small page (512 bytes per page) */
+ chip->ecc.size = 512;
+ chip->ecc.layout = &nand_hw_eccoob;
+ }
if (pdata->flash_bbt) {
/* use a flash based bbt */
--
1.7.2.3
_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox
next prev parent reply other threads:[~2011-03-12 19:15 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-12 19:14 [PATCH v3] S3C24xx: NAND management changes to support booting from NAND Juergen Beisert
2011-03-12 19:14 ` [PATCH 1/6] S3C24xx/NFC: Re-enable the controller after NAND boot test Juergen Beisert
2011-03-12 19:14 ` [PATCH 2/6] S3C24xx/NFC: Remove dead code Juergen Beisert
2011-03-12 19:14 ` [PATCH 3/6] S3C24xx/NFC: Remove double function setup Juergen Beisert
2011-03-12 19:14 ` [PATCH 4/6] S3C24xx/NFC: Consider correct NAND page size for boot Juergen Beisert
2011-03-12 19:14 ` Juergen Beisert [this message]
2011-03-12 19:14 ` [PATCH 6/6] S3C24xx/NFC: Add OOB/ECC handling documentation for different NANDs Juergen Beisert
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=1299957297-8539-6-git-send-email-jbe@pengutronix.de \
--to=jbe@pengutronix.de \
--cc=barebox@lists.infradead.org \
--cc=juergen@kreuzholzen.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