[U-Boot] [PATCH 31/31] 83xx, kmeter1: added bootcount feature

[Heiko Schocher]

Hello Kim,

Kim Phillips wrote:
> On Wed, 28 Jan 2009 10:41:02 +0100
> Heiko Schocher <hs at denx.de> wrote:
> 
>> diff --git a/cpu/mpc83xx/cpu.c b/cpu/mpc83xx/cpu.c
> 
>> +#ifdef CONFIG_BOOTCOUNT_LIMIT
>> +
>> +#if !defined(CONFIG_BOOTCOUNT_ADDR)
>> +#define CONFIG_BOOTCOUNT_ADDR	0x11bff8
> 
> it's CONFIG_SYS and magic number, but now that I've found it, sorry, I
> can't accept this - not all 83xx have a QE and thus this MURAM.  Even

Hmm.. maybe we make this dependent on CONFIG_QE ?

> if they did this would require changing the device tree muram node
> property, to indicate its size has shrunk 8 bytes, right?  In fact, not

Yes, we should do this.

> all QE's have 48Kbytes of MURAM either - the 8323 only has 16Kbytes.  

Thats why you could define it with CONFIG_BOOTCOUNT_ADDR, where
exactly this 8 bytes are.

> Problem is, I don't know of a better place to put the
> bootcount.  Ideas?

I thought to make it as on 82xx (using parameter Ram of SCC1), because
UCC5 should be compatible to the SCC1 see 8360ERM.pdf Table 19-11 on
page 19-20. But on the 8360, after reset, the complete parameter RAM is
initialized with 0 ... so that didn't work. Other places I couldn't
found for this feature :-(

bye
Heiko
-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany