am335x - need register that not reset by cpu soft reboot

Andrei Pushkin

Intellectual 705 points

Other Parts Discussed in Thread: AM3352

Hello. I use am3352 cpu and Linux 3.2 TI.

I need some memory address, that not reset if am335x reboot by watchdog or software reboot.

I need it to detect if it first boot or reboot.

over 11 years ago

0 Biser Gatchev-XID over 11 years ago

TI__Guru**** 393215 points

Hi Andrei,

The RTC timer has 3 scratchpad registers that are not affected by any reset source, except RTC reset.

0 Andrei Pushkin over 11 years ago in reply to Biser Gatchev-XID

Intellectual 705 points

Hi Biser. Thank you for support.

Please say name or address of this registers.

0 Andy Simpkins1 over 11 years ago in reply to Andrei Pushkin

Prodigy 40 points

All of the information can be found in the TRM

This is your primary referance document. learn to love it :-)

http://www.ti.com/lit/pdf/spruh73

60h RTC_SCRATCH0_REG Scratch 0 Register (General-Purpose) Section 20.3.5.20
64h RTC_SCRATCH1_REG Scratch 1 Register (General-Purpose) Section 20.3.5.21
68h RTC_SCRATCH2_REG Scratch 2 Register (General-Purpose) Section 20.3.5.22

Processors

Processors forum

am335x - need register that not reset by cpu soft reboot