coreboot

In file src/drivers/intel/fsp1_1/bootblock.c, function bootblock_fsp_temp_ram_init(void):

After call find_fsp function realised check (fih == NULL), but variable fih may be not NULL at error.

Solving (dummy):
((fih == NULL) || (fih <= ERROR_FSP_REV_MISMATCH))

Variable fih may be contain different error codes, that were ignored:
#define ERROR_NO_FV_SIG 1
#define ERROR_NO_FFS_GUID 2
#define ERROR_NO_INFO_HEADER 3
#define ERROR_IMAGEBASE_MISMATCH 4
#define ERROR_INFO_HEAD_SIG_MISMATCH 5
#define ERROR_FSP_SIG_MISMATCH 6
#define ERROR_FSP_REV_MISMATCH 7

I fall in this bug when try to run Skylake FSP GOLD - this version has different ImageRevision.