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The idea of collecting timestamps during romstage is awesome. the only problem is that the code that does that is completely undocumented. Some stuff you figure out by looking at the code. Then there's timestamp_init(tsc_t), whose argument is read by the mainboard from some mysterious registers. Then there's also:
build/lib/timestamp.romstage.o: In function `timestamp_init': /home/mrnuke/Sources/coreboot/src/lib/timestamp.c:40: undefined reference to `cbmem_add' build/lib/timestamp.romstage.o: In function `timestamp_add': /home/mrnuke/Sources/coreboot/src/lib/timestamp.c:58: undefined reference to `cbmem_find'
Can someone please explain the proper procedure of getting timestamp collection running. I'll even sacrifice myself and add doxygen-style documentation for the next poor fella trying to implement this.
Alex
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Alex G.