On Saturday 15 December 2007, Craig Millen wrote:
Yes I am using the 440EP. I was referring to all the code in cpu/ppc4xx/commproc.c, like this section:
#if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER) void post_word_store (ulong a) { volatile void *save_addr = (volatile void *)(CFG_OCM_DATA_ADDR + CFG_POST_WORD_ADDR); *(volatile ulong *) save_addr = a; }
ulong post_word_load (void) { volatile void *save_addr = (volatile void *)(CFG_OCM_DATA_ADDR + CFG_POST_WORD_ADDR); return *(volatile ulong *) save_addr; }
Yes, I was referring to this code too.
There are a few more functions in there that refer to the OCM. What/where is the unused GPT that you are talking about?
GPT == General Purpose Timer. For example the GPT0_COMP6 register. But this is of course application/OS dependant. Could be that your application (Linux etc) is using this GPT register. But I doubt it.
BTW: We have an ACK from AMCC that the content of these registers is retained even during reset.
Best regards, Stefan
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