[U-Boot-Users] Locked block in StrataFlash

[U-Boot-Users] Locked block in StrataFlash

[llandre]

Hi all,

I experienced a problem with strataflash driver on ARM920T-based custom 
hardware. The driver has been derived from 
board/esd/cpcpi440/strataflash.c. When issuing a saveenv command, U-Boot 
randomly can't erase the block because it is locked (environment is in 
flash). We verified with JTAG debugger that status register and it 
confirmed the locked state. To unlock the block we issued manually the 
necessary commands. The function flash_real_protect is never invoked (I 
verified with JTAG debugger that it is never executed, too).
Anybody experienced similar problems?


-- 
llandre

DAVE Electronics System House - R&D Department
web:   http://www.dave-tech.it
email: r&d2 at dave-tech.it

[U-Boot-Users] Locked block in StrataFlash

[Daniel Stenberg]

On Wed, 30 Nov 2005, llandre wrote:

> I experienced a problem with strataflash driver on ARM920T-based custom 
> hardware. The driver has been derived from board/esd/cpcpi440/strataflash.c. 
> When issuing a saveenv command, U-Boot randomly can't erase the block 
> because it is locked (environment is in flash). We verified with JTAG 
> debugger that status register and it confirmed the locked state. To unlock 
> the block we issued manually the necessary commands. The function 
> flash_real_protect is never invoked (I verified with JTAG debugger that it 
> is never executed, too). Anybody experienced similar problems?

I'm using an ARM920T as well (AT91RM9200 to be exact) and an Intel Strata 
flash, and since it speaks CFI I used drivers/cfi_flash.c with success.

-- 
          -=- Daniel Stenberg -=- http://daniel.haxx.se -=-
   ech`echo xiun|tr nu oc|sed 'sx\([sx]\)\([xoi]\)xo un\2\1 is xg'`ol