#include <asm/msr.h>
#include <asm/mtrr.h>
+DECLARE_GLOBAL_DATA_PTR;
+
/* Prepare to adjust MTRRs */
void mtrr_open(struct mtrr_state *state)
{
+ if (!gd->arch.has_mtrr)
+ return;
+
state->enable_cache = dcache_status();
if (state->enable_cache)
/* Clean up after adjusting MTRRs, and enable them */
void mtrr_close(struct mtrr_state *state)
{
+ if (!gd->arch.has_mtrr)
+ return;
+
wrmsrl(MTRR_DEF_TYPE_MSR, state->deftype | MTRR_DEF_TYPE_EN);
if (state->enable_cache)
enable_caches();
uint64_t mask;
int i;
+ if (!gd->arch.has_mtrr)
+ return -ENOSYS;
+
mtrr_open(&state);
for (i = 0; i < gd->arch.mtrr_req_count; i++, req++) {
mask = ~(req->size - 1);
struct mtrr_request *req;
uint64_t mask;
+ if (!gd->arch.has_mtrr)
+ return -ENOSYS;
+
if (gd->arch.mtrr_req_count == MAX_MTRR_REQUESTS)
return -ENOSPC;
req = &gd->arch.mtrr_req[gd->arch.mtrr_req_count++];