Hi,
The GIT kernel has the MTD drivers for the NOR flash. You can get it at
http://source.mvista.com/git/
Tarring the drivers/mtd directory for you will be useless since that only
works with the GIT kernel (2.6.20). You won't be able to use the it with the
Montavista kernel (2.6.10). Please get the GIT kernel and follow my
instructions I sent earlier to get JFFS2 NOR flash support. The GIT kernel
is free and has the device drivers you need.
Regards,
Andy
----- Original Message ----
From: Sz Lian Yu <[EMAIL PROTECTED]>
To: Andy Ngo <[EMAIL PROTECTED]>
Sent: Monday, March 12, 2007 12:16:37 AM
Subject: Re: About ... "Instructions to set up a NOR JFFS2 filesystem."
Dear Andy:
Thank you for your information.
I will have a try.
I just hear that MontaVista will release
linux device driver for NOR flash.
Is it necessary for this?
( Could you tar your device driver directory for me if
it is convenient for you. )
B.R.
diego
--- Andy Ngo <[EMAIL PROTECTED]> 說：
> Hi,
>
> For the NOR device, I built the JFFS2 image via the
> following command:
>
> mkfs.jffs2 -d [root_folder] -o
> rootfs_image.jffs2 -e 0x10000
>
> The last part (-e 0x10000) is the erase sector size
> of the flash device.
>
> You can get mkfs.jffs2 utility from MTD utils at
> http://www.linux-mtd.infradead.org/index.html.
> Download the utils and build it on your host to
> create the mkfs.jffs2 utility. The mkfs.jffs2
> utility is
> already on the DVEVM target so you can also upload
> your root_folder to the target
> and execute the JFFS2 command above.
>
> The JFFS2 image I built was for the NOR flash so I
> doubt if it works
> for the NAND device. I believe JFFS2 can be built
> for the NAND device, just search
> around in this forum for help. For the NOR flash, I
> wasn't able to get it working
> with the Montavista kernel but I was able to get it
> working with Kevin's GIT kernel.
> You need to download it and configure it with MTD,
> JFFS2, and RAM/ROM/Flash
> chip drivers; also, you need to disable IDE support.
> Under MTD, you need to select
> "Mapping drivers for chip access" and then choose
> CFI Flash device in physical memory map:
> 0x02000000 - physical start
> 0x0 - physical length (driver
> will autodetect)
> 2 - bank width
>
> Here's a snippet of my .config for the GIT kernel
> that includes JFFS2 NOR flash support:
>
> CONFIG_MTD=y
> # CONFIG_MTD_DEBUG is not set
> # CONFIG_MTD_CONCAT is not set
> CONFIG_MTD_PARTITIONS=y
> # CONFIG_MTD_REDBOOT_PARTS is not set
> CONFIG_MTD_CMDLINE_PARTS=y
> # CONFIG_MTD_AFS_PARTS is not set
>
> #
> # User Modules And Translation Layers
> #
> CONFIG_MTD_CHAR=y
> CONFIG_MTD_BLKDEVS=y
> CONFIG_MTD_BLOCK=y
> # CONFIG_FTL is not set
> # CONFIG_NFTL is not set
> # CONFIG_INFTL is not set
> # CONFIG_RFD_FTL is not set
> # CONFIG_SSFDC is not set
>
> #
> # RAM/ROM/Flash chip drivers
> #
> CONFIG_MTD_CFI=y
> # CONFIG_MTD_JEDECPROBE is not set
> CONFIG_MTD_GEN_PROBE=y
> # CONFIG_MTD_CFI_ADV_OPTIONS is not set
> CONFIG_MTD_MAP_BANK_WIDTH_1=y
> CONFIG_MTD_MAP_BANK_WIDTH_2=y
> CONFIG_MTD_MAP_BANK_WIDTH_4=y
> # CONFIG_MTD_MAP_BANK_WIDTH_8 is not set
> # CONFIG_MTD_MAP_BANK_WIDTH_16 is
> not set
> # CONFIG_MTD_MAP_BANK_WIDTH_32 is not set
> CONFIG_MTD_CFI_I1=y
> CONFIG_MTD_CFI_I2=y
> # CONFIG_MTD_CFI_I4 is not set
> # CONFIG_MTD_CFI_I8 is not set
> # CONFIG_MTD_CFI_INTELEXT is not set
> CONFIG_MTD_CFI_AMDSTD=y
> # CONFIG_MTD_CFI_STAA is not set
> CONFIG_MTD_CFI_UTIL=y
> # CONFIG_MTD_RAM is not set
> # CONFIG_MTD_ROM is not set
> # CONFIG_MTD_ABSENT is not set
> # CONFIG_MTD_OBSOLETE_CHIPS is not set
>
> #
> # Mapping drivers for chip access
> #
> # CONFIG_MTD_COMPLEX_MAPPINGS is not set
> CONFIG_MTD_PHYSMAP=y
> CONFIG_MTD_PHYSMAP_START=0x02000000
> CONFIG_MTD_PHYSMAP_LEN=0x0
> CONFIG_MTD_PHYSMAP_BANKWIDTH=2
> # CONFIG_MTD_ARM_INTEGRATOR is not set
> # CONFIG_MTD_PLATRAM is not set
>
>
> Good luck.
>
> Regards,
> Andy
>
>
> ----- Original Message ---
> From: Sz Lian Yu <[EMAIL PROTECTED]>
> To: [EMAIL PROTECTED]; [EMAIL PROTECTED]
> Sent: Sunday, March 11, 2007 10:40:27 PM
> Subject: About ... "Instructions to set up a NOR
> JFFS2 filesystem."
>
> Dear Sir:
>
> I just saw your document in davinci linux
> forum.,it's
> quite helpful.
> But now I am wondering how to make jffs2 filesystem
> in
> NOR flash without the NOR flash device driver...
> My davinci linux environment is only with NAND flash
> device driver.
> Could it go without the flash device driver?
> If no , could you please send me the NOR flash
> device
> driver files for me?
>
> B.R.
> diego
>
>
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