Mike Banon mikebdp2@gmail.com writes:
Before borrowing update_microcode.c for our family15tn, we need to somehow figure out if its even working for that " family_10h-family_15h ". If you go to the root directory with coreboot sources, and issue ' find . -type f -print0 | xargs -0 grep "cpu_microcode_bins" ' command, you'll see that cpu_microcode_bins variable is defined ONLY for various Intel CPUs, and even one VIA CPU, but never for the AMD CPUs !
The amd microcode is included differently, by including it as a cbfs-file(s) directly. See cpu/amd/family_10h-family_15h/Makefile.inc.
So I have no idea if this update_microcode.c for AMD has been ever tested, because there is no "cpu_microcode_bins" variable defined even for "10h/15h" family, and its essential for this update mechanism to work : if "cpu_microcode_bins" isnt defined, microcode_amd_fam15h.bin isnt included, and update_microcode.c is either never launched or gives an error
It is tested and the update is done quite early on to make sure the CPU operates properly before done any other initialization.
-
Arthur Heymans