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
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
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.
+
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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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:
+ /*
+
(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
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
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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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
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
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
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
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
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 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
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
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