diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/soc/intel/common/block/sgx/sgx.c | 48 |
1 files changed, 33 insertions, 15 deletions
diff --git a/src/soc/intel/common/block/sgx/sgx.c b/src/soc/intel/common/block/sgx/sgx.c index f12bfb9955..3c3ab4d114 100644 --- a/src/soc/intel/common/block/sgx/sgx.c +++ b/src/soc/intel/common/block/sgx/sgx.c @@ -21,6 +21,7 @@ #include <intelblocks/mp_init.h> #include <intelblocks/msr.h> #include <intelblocks/sgx.h> +#include <intelblocks/systemagent.h> #include <soc/cpu.h> #include <soc/pci_devs.h> #include <string.h> @@ -62,33 +63,50 @@ static int is_sgx_supported(void) void prmrr_core_configure(void) { - msr_t prmrr_base; - msr_t prmrr_mask; + union { + uint64_t data64; + struct { + uint32_t lo; + uint32_t hi; + } data32; + } prmrr_base, prmrr_mask; msr_t msr; if (!soc_sgx_enabled() || !is_sgx_supported()) return; + msr = rdmsr(PRMRR_PHYS_MASK_MSR); + /* If it is locked don't attempt to write PRMRR MSRs. */ + if (msr.lo & PRMRR_PHYS_MASK_LOCK) + return; + /* PRMRR base and mask are read from the UNCORE PRMRR MSRs * that are already set in FSP-M. */ - prmrr_base = rdmsr(UNCORE_PRMRR_PHYS_BASE_MSR); - prmrr_mask = rdmsr(UNCORE_PRMRR_PHYS_MASK_MSR); - if (!prmrr_base.lo) { - printk(BIOS_ERR, "SGX Error: Uncore PRMRR is not set!\n"); + if (soc_get_uncore_prmmr_base_and_mask(&prmrr_base.data64, + &prmrr_mask.data64) < 0) { + printk(BIOS_ERR, "SGX: Failed to get PRMRR base and mask\n"); return; } - msr = rdmsr(PRMRR_PHYS_MASK_MSR); - /* If it is locked don't attempt to write PRMRR MSRs. */ - if (msr.lo & PRMRR_PHYS_MASK_LOCK) + if (!prmrr_base.data32.lo) { + printk(BIOS_ERR, "SGX Error: Uncore PRMRR is not set!\n"); return; + } - /* Program core PRMRR MSRs */ - prmrr_base.lo |= MTRR_TYPE_WRBACK; /* cache writeback mem attrib */ - wrmsr(PRMRR_PHYS_BASE_MSR, prmrr_base); - prmrr_mask.lo &= ~PRMRR_PHYS_MASK_VALID; /* Do not set the valid bit */ - prmrr_mask.lo |= PRMRR_PHYS_MASK_LOCK; /* Lock it */ - wrmsr(PRMRR_PHYS_MASK_MSR, prmrr_mask); + printk(BIOS_INFO, "SGX: prmrr_base = 0x%llx", prmrr_base.data64); + printk(BIOS_INFO, "SGX: prmrr_mask = 0x%llx", prmrr_mask.data64); + + /* Program core PRMRR MSRs. + * - Set cache writeback mem attrib in PRMRR base MSR + * - Clear the valid bit in PRMRR mask MSR + * - Lock PRMRR MASK MSR */ + prmrr_base.data32.lo |= MTRR_TYPE_WRBACK; + wrmsr(PRMRR_PHYS_BASE_MSR, (msr_t) {.lo = prmrr_base.data32.lo, + .hi = prmrr_base.data32.hi}); + prmrr_mask.data32.lo &= ~PRMRR_PHYS_MASK_VALID; + prmrr_mask.data32.lo |= PRMRR_PHYS_MASK_LOCK; + wrmsr(PRMRR_PHYS_MASK_MSR, (msr_t) {.lo = prmrr_mask.data32.lo, + .hi = prmrr_mask.data32.hi}); } static int is_prmrr_set(void) |