[S] Change in coreboot[master]: cpu/x86/smm: Enable setting SMM console log level from mainboard

[Johnny Lin (Code Review)]

Attention is currently required from: Marc Jones, Patrick Rudolph, Jonathan Zhang, Rocky Phagura, Jingle Hsu, Angel Pons, Arthur Heymans, Morgan Jang, Kyösti Mälkki.

Johnny Lin has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/49460 )

Change subject: cpu/x86/smm: Enable setting SMM console log level from mainboard
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Patch Set 21:

(3 comments)

Patchset:

PS20:
> Johnny, could you rebase this patch set?

Done.

File src/cpu/x86/smm/smm_module_handler.c:

https://review.coreboot.org/c/coreboot/+/49460/comment/35a896cf_87140229 
PS20, Line 17: #if CONFIG(DEBUG_SMI) && CONFIG(OVERRIDE_UART_FOR_CONSOLE)
             : u32 smm_uart_for_console;
             : #endif
> smm_uart_for_console is not used by any mainboard so should be removed.

Done

https://review.coreboot.org/c/coreboot/+/49460/comment/47805f92_c04090f3 
PS20, Line 166: console_init();
> Should avoid doing console_init/deinit() when smm_log_level is 0 to avoid unnecessary overhead and a […]

Ack