On Wed, Nov 4, 2009 at 10:02 AM, Myles Watson <[email protected]> wrote: >> Hi, Myles, >> About the HT code, I have a question. >> >> I am debugging my board, which is Fam10+RS780+SB700. The CPU and RS780 are >> the two HT node. > Aren't there three? How is the SB700 connected to the RS780? > >> It seems like the RS690/SB600 board. > The RS690/SB600 board has three.
There is just the CPU and 690 or 780. The AMD 600 or 700 is connect with Alink, not HT. > > early_ht.c: Just enumerate the southbridge chain in case that's needed for > serial initialization or ROM access. > > incoherent_ht.c: Enumerate all chains so that they can be optimized before > the first reset. > > hypertransport.c: Enumerate the chains according to the device tree. Is early_ht.c, enumerate_ht_chain(), even needed. The subtractive path should work. Maybe depends on the southbridge/configuration. For Fam10, I think that where problems happen is the early_ht.c sets values that are found and used by the AGESA based code that has a slightly different search algorithm. This happens in ht3init.c, process_link(). Failures in process_link() cause the system to halt even if it could continue based on the early setup. Marc -- http://marcjonesconsulting.com -- coreboot mailing list: [email protected] http://www.coreboot.org/mailman/listinfo/coreboot
