[coreboot] Reducing the boot time

[Nico Huber]

Hello Antony,

On 11.08.2018 12:55, Antony AbeePrakash X V wrote:
> Coreboot FSP Performance Data
> ID: 950 - 951: 8118676370 - 2354813461 --> 4433ms   (TS_FSP_MEMORY_INIT_START - TS_FSP_MEMORY_INIT_END)
> ID: 952 - 953: 10675414728 - 8905813067 --> 1361ms  (TS_FSP_TEMP_RAM_EXIT_START - TS_FSP_TEMP_RAM_EXIT_END)
> ID: 954 - 955: 11761158519 - 10934089420 --> 636ms   (TS_FSP_SILICON_INIT_START - TS_FSP_SILICON_INIT_END)
> ID: 956 - 957: 19265617974 - 19265559282 --> 0ms       (TS_FSP_BEFORE_ENUMERATE - TS_FSP_AFTER_ENUMERATE)

given that Google uses the same SoC for Chromebooks, I would expect
about ten times faster numbers.

What FSP binary do you use? There is one in Intel's FSP GitHub repo[1].
Maybe try that one if you haven't already. I know there are also bina-
ries with additional debugging enabled; that might slow things down.

> 
> Can we reduce the above mentioned time taken by modifying the FSP source ? Please advice.

Questions about the FSP source are better directed towards Intel. They
do not want this community to know the source.

Nico

[1] https://github.com/IntelFsp/FSP/tree/ApolloLake