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Altera_Forum
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20 years ago

AM29LV065D FLASH read, erase, program?

Hi All, Does anyone know how to read erase and program the AMD flash memory in ucLinux using C programs? (AM29LV065D or AM29LV128MH) I use this memory for store uClinux FPGA SOF and user’s...
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Altera_Forum
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20 years ago

Hi posix6973,

> 1. I didn’t see any mtd device file create in /dev. Did I missing some procedures?

You need to do this when you create the file system. You have two choices:

(1) Create the device inodes by hand using mknod, then run mkfs.jffs2

(2) Create a device table file and use the -D, --devtable option to mkfs.jffs2

The second option is very convenient since you don't need to be root, and you basically

have built-in documentation for /dev ;-)

> 2. Need I create the mtd-utils with kernel?

No. Just download and build the applications like any other linux apps.

> 3. What difference between ROMfs and romfs/jffs2 in boot report?

It looks like you are using two different mtd mapping drivers. Take a look at:

drivers/mtd/maps/altera.c.

drivers/mtd/maps/nios_romfs.c

Regards,

--Scott