IIM on iMX27 "how-to" needed

[Sascha Hauer]

On Tue, Jan 31, 2012 at 11:36:51AM +0100, Igor wrote:
> Hi,
> 
> I'm trying to read and write the e-fuse banks on my iMX27 with Barebox
> but still unsuccessfully.
> 
> I configured and compiled Barebox with IIM support, so I can see these devices:
> barebox:/ ls -l /dev
> crw-------         32 imx_iim_bank0
> crw-------         32 imx_iim_bank1
> crw-------         32 imx_iim_bank2
> crw-------         32 imx_iim_bank3
> crw-------         32 imx_iim_bank4
> crw-------         32 imx_iim_bank5
> crw-------         32 imx_iim_bank6
> crw-------         32 imx_iim_bank7
> 
> and I get:
> barebox:/ devinfo
> [..]
> `---- imx_iim0
>      `---- 0x00000000-0x0000001f: /dev/imx_iim_bank0
>      `---- 0x00000000-0x0000001f: /dev/imx_iim_bank1
>      `---- 0x00000000-0x0000001f: /dev/imx_iim_bank2
>      `---- 0x00000000-0x0000001f: /dev/imx_iim_bank3
>      `---- 0x00000000-0x0000001f: /dev/imx_iim_bank4
>      `---- 0x00000000-0x0000001f: /dev/imx_iim_bank5
>      `---- 0x00000000-0x0000001f: /dev/imx_iim_bank6
>      `---- 0x00000000-0x0000001f: /dev/imx_iim_bank7
> 
> barebox:/ devinfo imx_iim0
> resources:
> num   : 0
> start : 0x10028000
> size  : 0x00001000
> driver: imx_iim
> 
> no info available for imx_iim0
> Parameters:
> permanent_write_enable = 0
> explicit_sense_enable = 1
> 
> By the way I don't know how to read and write the fuse banks.
> 
> If I try to read them, I get:
> barebox:/ md -b /dev/imx_iim_bank0
> could not parse: /dev/imx_iim_bank0

The command is correct, the usage is wrong.
See http://wiki.barebox.org/doku.php?id=commands:md and let me know
if that helps (and what could be made better)

Sascha


-- 
Pengutronix e.K.                           |                             |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |