2010/11/17 Rudolf Marek <[email protected]>: > Hi all, > > Here is a SMM patch that actually works on VT8237S! It supports only SMI CMD > so sending something to port 0x52f should trigger it. > > It is mostly in good state however following needs to be done. Thats left to > Tobias or Fengwei. > > 0) only enabled board is m2v-mx se (trivial to enable others VIA 8237 based) > 1) PCIe access is hardcoded to 0xe000000 > > This sucks,but generally mmconfig is good idea beacuse it does not create > races... > > So what about that? > > a) change the SMM handler to save PCIcfg/PCIdata??? regs > b) make MMCONFIG static to 0xe00000 > c) some clever way to get idea where it is without PCI access > > > 2) Dualcore/more cpus > > I hardcoded that for single CPU. You need most likely change > model_fxx_init.c and call smm_init from there (except that copy can done via > CPU) > > All CPUs needs to set Aseg ENable and SMM_BASE (to different address) > > No smm_relocate.S is used because we dont need it on AMD, we have the > MSRs... > > 3) More features to SMM > > Handy would be ACPI enable/disable -maybe whats there will work > and Poweroff if powerbutton is pressed and acpi does not work yet ;) > > Otherwise SMM is not used at all so we don't really need any features... > > 4) Cool stuff > > Emulate some hardware one can do traps for IO and for MMIO so any HW can be > created just for fun (TPM ;) > > 5) remove HACK_SMM > The header file dislikes the include someone needs to fix that. > > 6) SMM locking > > The SMM should be locked, there is even a register for that. However I dont > know if all CPUs needs to lock... and if some cpu is locked, can others > still access the memory (for the memcopy?) > > Also we lock SMM on the base in the RAM, we should create a dummy "RSM" like > handler if we don't have any SMI handler on K8. > > Thanks goes to Stepan for initial version (from mine POC version). >
I haven't looked at the patch, but this is exciting development. Open SMM implementation should interest many people. Marc -- http://se-eng.com -- coreboot mailing list: [email protected] http://www.coreboot.org/mailman/listinfo/coreboot
