[coreboot-gerrit] Change in coreboot[master]: soc/intel/common/block/cse: Add BWG error recovery to EOP failure

[Tim Wawrzynczak (Code Review)]

Attention is currently required from: Furquan Shaikh, Subrata Banik, Patrick Rudolph.
Tim Wawrzynczak has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/55675 )

Change subject: soc/intel/common/block/cse: Add BWG error recovery to EOP failure
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Patch Set 13:

(1 comment)

File src/soc/intel/common/block/cse/cse_eop.c:

https://review.coreboot.org/c/coreboot/+/55675/comment/8c5288cd_0bab5ba4 
PS12, Line 156: 		       "error\nYour system may be in an insecure state.");
> > Subrata, this late in boot, doesn't using the PCR interface have to happen in SMM? (also note thes […]

Ahh true, but there is also the call to `cse_disable_mei_bus()`, which disables HECI on the CSE side first...

How about this pseudo-logic:
```
bool fail = false;

if (!cse_disable_mei_bus()) {
    if (CONFIG(HECI_DISABLE_USING_SMM)) {
          config_t *config = config_of_soc();
          config->HeciEnabled = 0;
    }
}

if (!cse_disable_mei_devices()) {
     die(...);
}

```