diff options
| -rw-r--r-- | src/soc/intel/cannonlake/include/soc/iomap.h | 4 | ||||
| -rw-r--r-- | src/soc/intel/cannonlake/memmap.c | 19 |
2 files changed, 23 insertions, 0 deletions
diff --git a/src/soc/intel/cannonlake/include/soc/iomap.h b/src/soc/intel/cannonlake/include/soc/iomap.h index 1ebaf3f7b6..9cfb59e7d0 100644 --- a/src/soc/intel/cannonlake/include/soc/iomap.h +++ b/src/soc/intel/cannonlake/include/soc/iomap.h @@ -68,6 +68,10 @@ #define HECI1_BASE_ADDRESS 0xfeda2000 +/* PTT registers */ +#define PTT_TXT_BASE_ADDRESS 0xfed30800 +#define PTT_PRESENT 0x00070000 + #define VTD_BASE_ADDRESS 0xFED90000 #define VTD_BASE_SIZE 0x00004000 /* diff --git a/src/soc/intel/cannonlake/memmap.c b/src/soc/intel/cannonlake/memmap.c index f3286cce66..7adaa30b18 100644 --- a/src/soc/intel/cannonlake/memmap.c +++ b/src/soc/intel/cannonlake/memmap.c @@ -37,6 +37,22 @@ void smm_region(uintptr_t *start, size_t *size) *size = sa_get_tseg_size(); } +static bool is_ptt_enable(void) +{ + if ((read32((void *)PTT_TXT_BASE_ADDRESS) & PTT_PRESENT) == + PTT_PRESENT) + return true; + + return false; +} + +/* Calculate PTT size */ +static size_t get_ptt_size(void) +{ + /* Allocate 4KB for PTT if enabled */ + return is_ptt_enable() ? 4*KiB : 0; +} + /* Calculate ME Stolen size */ static size_t get_imr_size(void) { @@ -130,6 +146,9 @@ static size_t calculate_reserved_mem_size(uintptr_t dram_base, /* Get Tracehub size */ reserve_mem_base -= get_imr_size(); + /* Get PTT size */ + reserve_mem_base -= get_ptt_size(); + /* Traditional Area Size */ reserve_mem_size = dram_base - reserve_mem_base; |