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-rw-r--r--src/include/cpu/intel/smm_reloc.h54
1 files changed, 54 insertions, 0 deletions
diff --git a/src/include/cpu/intel/smm_reloc.h b/src/include/cpu/intel/smm_reloc.h
index cb196fcd82..bef8d4eed7 100644
--- a/src/include/cpu/intel/smm_reloc.h
+++ b/src/include/cpu/intel/smm_reloc.h
@@ -14,7 +14,29 @@
#ifndef __INTEL_SMM_RELOC_H__
#define __INTEL_SMM_RELOC_H__
+#include <console/console.h>
#include <types.h>
+#include <cpu/x86/msr.h>
+#include <cpu/x86/mtrr.h>
+
+struct smm_relocation_params {
+ uintptr_t ied_base;
+ size_t ied_size;
+ msr_t smrr_base;
+ msr_t smrr_mask;
+ msr_t prmrr_base;
+ msr_t prmrr_mask;
+ msr_t uncore_prmrr_base;
+ msr_t uncore_prmrr_mask;
+ /*
+ * The smm_save_state_in_msrs field indicates if SMM save state
+ * locations live in MSRs. This indicates to the CPUs how to adjust
+ * the SMMBASE and IEDBASE
+ */
+ int smm_save_state_in_msrs;
+};
+
+extern struct smm_relocation_params smm_reloc_params;
struct ied_header {
char signature[10];
@@ -42,4 +64,36 @@ void smm_relocation_handler(int cpu, uintptr_t curr_smbase, uintptr_t staggered_
bool cpu_has_alternative_smrr(void);
+
+#define MSR_PRMRR_PHYS_BASE 0x1f4
+#define MSR_PRMRR_PHYS_MASK 0x1f5
+#define MSR_UNCORE_PRMRR_PHYS_BASE 0x2f4
+#define MSR_UNCORE_PRMRR_PHYS_MASK 0x2f5
+
+static inline void write_smrr(struct smm_relocation_params *relo_params)
+{
+ printk(BIOS_DEBUG, "Writing SMRR. base = 0x%08x, mask=0x%08x\n",
+ relo_params->smrr_base.lo, relo_params->smrr_mask.lo);
+ wrmsr(IA32_SMRR_PHYS_BASE, relo_params->smrr_base);
+ wrmsr(IA32_SMRR_PHYS_MASK, relo_params->smrr_mask);
+}
+
+static inline void write_prmrr(struct smm_relocation_params *relo_params)
+{
+ printk(BIOS_DEBUG, "Writing PRMRR. base = 0x%08x, mask=0x%08x\n",
+ relo_params->prmrr_base.lo, relo_params->prmrr_mask.lo);
+ wrmsr(MSR_PRMRR_PHYS_BASE, relo_params->prmrr_base);
+ wrmsr(MSR_PRMRR_PHYS_MASK, relo_params->prmrr_mask);
+}
+
+static inline void write_uncore_prmrr(struct smm_relocation_params *relo_params)
+{
+ printk(BIOS_DEBUG,
+ "Writing UNCORE_PRMRR. base = 0x%08x, mask=0x%08x\n",
+ relo_params->uncore_prmrr_base.lo,
+ relo_params->uncore_prmrr_mask.lo);
+ wrmsr(MSR_UNCORE_PRMRR_PHYS_BASE, relo_params->uncore_prmrr_base);
+ wrmsr(MSR_UNCORE_PRMRR_PHYS_MASK, relo_params->uncore_prmrr_mask);
+}
+
#endif