Guido Guenther wrote: [..]
When doing this I'd write into the NVRAM directly instead of using the Arcs functions, I think the necessary info is in the IRIX headers.
I had a look at the ARC spec. (ARC/riscspec.pdf), and I am affraid the only (documented) way to access PROM env. variables are the two get/set functions.
In that case, the /proc approach makes sense IMHO.
Looking at hpc3 spec. and ip22-sc.c, I understand that PROM data are stored in the EEPROM behind the hpc3.
Maybe a reasonable approach is:
o write a new char device driver (as pc's /dev/nvram for example) o move eeprom read/write routines from ip22-sc.c somewhere else, and use those routines both in ip22-sc.c and the char driver o guess the format/offsets of the info. stored in nvram o then write some user space app. to do the env. variable specific part.
In that latter case, the /proc approach makes less sense IMHO.
What do you think ? Am I missing some documentation ? Is there more in the IRIX headers ? (can't check right now, but I have them at home)
Regards,
-- Vincent Stehlé
