On 03.05.2012 12:15, Robbie Dinn wrote:
> Hi all,
> I have a requirement to be able to set the security bit
> in an Atmel at91sam7 processor. I need this because I
> want to be able to use openocd to do production device
> programming via the jtag port.
>
> (is there a better tool available to do this?)
>
> I have attached a patch to allow this. It is based on a
> copy/paste of the function that does the gpnvm bits.
I's quite easy to do the same without patching sources:
proc set_security {} {
# MC_FMR
# | ((4032000 * 36 / 3 / 1000000) << 16) # MCK
cycles
in 1 us
# | (1 << 8) # 1 FWS
# | (1 << 7) # no erase
before prog
mww 0xFFFFFF60 [expr ((4032000 * 36 / 3 / 1000000) << 16) | (1 << 8) |
(1 << 7)]
# MC_FCR
# | (0x5A << 24) # key
# | 0x0000000F # SET
Security command
mww 0xFFFFFF64 [expr (0x5A << 24) | 0x0000000F]
}
--
Regards,
Sergey A. Borshch mailto: [email protected]
SB ELDI ltd. Riga, Latvia
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