Revert "soc/intel/cannonlake: Remove DMA support for PTT"
This reverts commit d5018a8f78
.
This commit is contained in:
@@ -76,6 +76,10 @@
|
||||
|
||||
#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
|
||||
/*
|
||||
|
@@ -83,6 +83,22 @@ int smm_subregion(int sub, void **start, size_t *size)
|
||||
return 0;
|
||||
}
|
||||
|
||||
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)
|
||||
{
|
||||
@@ -176,6 +192,9 @@ 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;
|
||||
|
||||
|
Reference in New Issue
Block a user