于 2011年12月15日 04:15, Scott Wood 写道:
On 12/14/2011 02:41 AM, LiuShuo wrote:
于 2011年12月13日 10:46, LiuShuo 写道:
于 2011年12月13日 05:30, Scott Wood 写道:
On 12/12/2011 03:19 PM, Artem Bityutskiy wrote:
On Mon, 2011-12-12 at 15:15 -0600, Scott Wood wrote:
NAND chips come from the factory with bad
于 2011年12月13日 10:46, LiuShuo 写道:
于 2011年12月13日 05:30, Scott Wood 写道:
On 12/12/2011 03:19 PM, Artem Bityutskiy wrote:
On Mon, 2011-12-12 at 15:15 -0600, Scott Wood wrote:
NAND chips come from the factory with bad blocks marked at a certain
offset into each page. This offset is normally in the
struct mtd_info *mtd)
{
if (!check_migrated_bbt_pattern())
bad_block_info_migtrate();
nand_default_bbt(mtd); /* default function in nand_bbt.c */
}
- LiuShuo
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se a user-space tool?
That's the kind of answer I was hoping to get from Shuo. :-)
OK, I try to do this. Wait for a couple of days.
-LiuShuo
Most likely is a firmware-based tool, but I'd like there to be some way
for the tool to mark that this has happened, so that the Linux driver
can refu
于 2011年12月08日 03:11, Scott Wood 写道:
On 12/06/2011 09:55 PM, LiuShuo wrote:
于 2011年12月07日 08:09, Scott Wood 写道:
On 12/03/2011 10:31 PM, shuo@freescale.com wrote:
From: Liu Shuo
Freescale FCM controller has a 2K size limitation of buffer RAM. In
order
to support the Nand flash chip whose
(FIR_OP_RS<< FIR_OP4_SHIFT));
Please explicitly show the (FIR_OP_NOP<< FIR_OP0_SHIFT) compenent.
+ } else if (mtd->writesize>= 2048&& mtd->writesize<= 16 * 1024) {
+
setbits32(&lbc->bank[priv->bank].or, OR_FCM_PGS);
Don't insert a blank line here.
Ok.
-LiuShuo
-Scott
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于 2011年11月24日 16:16, Artem Bityutskiy 写道:
On Thu, 2011-11-24 at 07:49 +, Li Yang-R58472 wrote:
Subject: Re: [PATCH 3/3] mtd/nand : workaround for Freescale FCM to support
large-page Nand chip
On Thu, 2011-11-24 at 08:41 +0800, b35...@freescale.com wrote:
+ /*
+
before calling nand_scan(). We will
+* re-malloc later if needed.
+*/
+ elbc_fcm_ctrl->buffer = kmalloc(4096 * 6, GFP_KERNEL);
+ if (!elbc_fcm_ctrl->buffer)
+ return -ENOMEM;
Clean up properly if you fail to allocate the buffer. This includes
freeing elbc_fcm_ctrl, setting fsl_lbc_ctrl_dev->nand to NULL, and
releasing fsl_elbc_nand_mutex.
-Scott
- LiuShuo
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er have to be used if writesize
+* of chip is greater than 2048.
+* We malloc a large enough buffer at this point, because we
+* don't know writesize before calling nand_scan(). We will
+* re-malloc later if needed.
+
Ok and I want to add another patch before 3/3.
-LiuShuo
On Tue, 2011-11-15 at 17:29 +0800, b35...@freescale.com wrote:
From: Liu Shuo
If we use the Nand flash chip whose number of pages in a block is greater
than 64(for large page), we must treat the low bit of FBAR as being the
high bit of
于 2011年08月25日 19:25, Matthieu CASTET 写道:
Hi,
LiuShuo a écrit :
于 2011年08月23日 18:02, Matthieu CASTET 写道:
LiuShuo a écrit :
于 2011年08月19日 00:25, Scott Wood 写道:
On 08/17/2011 09:33 PM, b35...@freescale.com wrote:
From: Liu Shuo
Freescale FCM controller has a 2K size limitation of buffer RAM
于 2011年08月23日 18:02, Matthieu CASTET 写道:
LiuShuo a écrit :
于 2011年08月19日 00:25, Scott Wood 写道:
On 08/17/2011 09:33 PM, b35...@freescale.com wrote:
From: Liu Shuo
Freescale FCM controller has a 2K size limitation of buffer RAM. In order
to support the Nand flash chip whose page size is larger
于 2011年08月23日 16:14, Matthieu CASTET 写道:
LiuShuo a écrit :
于 2011年08月23日 00:19, Scott Wood 写道:
On 08/22/2011 11:13 AM, Matthieu CASTET wrote:
Scott Wood a écrit :
To eliminate it we'd need to do an extra data transfer without reissuing
the command, which Shuo was unable to get to
Maybe we will always print the NOP restrictions when this hack is used,
let the customers select how to use the flash on their board.
-LiuShuo
If it's less than 4
for 4K or 8 for 8K, also print a message saying not to use jffs2 (does
yaffs2 do similar things?). If it's less than 2 for 4K
于 2011年08月23日 00:19, Scott Wood 写道:
On 08/22/2011 11:13 AM, Matthieu CASTET wrote:
Scott Wood a écrit :
To eliminate it we'd need to do an extra data transfer without reissuing
the command, which Shuo was unable to get to work.
That's weird because our controller seems quite flexible [1].
So
于 2011年08月19日 01:00, Matthieu CASTET 写道:
b35...@freescale.com a écrit :
From: Liu Shuo
Freescale FCM controller has a 2K size limitation of buffer RAM. In order
to support the Nand flash chip whose page size is larger than 2K bytes,
we divide a page into multi-2K pages for MTD layer driver. In
t mtd_info {
..
enum {
MTD_OOB_PLACE,
MTD_OOB_AUTO,
MTD_OOB_RAW,
} oob_mode;
}
In function mtd_do_writeoob() (in drivers/mtd/mtdchar.c) :
- ops.mode = MTD_OOB_PLACE;
+ ops.mode = mtd->oob_mode;
Could w
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