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| -rw-r--r-- | src/soc/intel/common/acpi/sgx.asl | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/src/soc/intel/common/acpi/sgx.asl b/src/soc/intel/common/acpi/sgx.asl new file mode 100644 index 0000000000..43de44f33c --- /dev/null +++ b/src/soc/intel/common/acpi/sgx.asl @@ -0,0 +1,73 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2017 Intel Corp. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +External(\_SB.EPCS, IntObj) // Enclave Page Cache (EPC) Status +External(\_SB.EMNA, IntObj) // EPC base address +External(\_SB.ELNG, IntObj) // EPC length + +Scope(\_SB) +{ + // Secure Enclave memory + Device (EPC) + { + Name (_HID, EISAID ("INT0E0C")) + Name (_STR, Unicode ("Enclave Page Cache 1.0")) + Name (_MLS, Package () { + Package (2) { "en", Unicode ("Enclave Page Cache 1.0") } + }) + + Name (RBUF, ResourceTemplate () + { + // _MIN, _MAX and _LEN get patched runtime + QWordMemory ( + ResourceConsumer, // ResourceUsage + PosDecode, // Decode _DEC + MinNotFixed, // IsMinFixed _MIF + MaxNotFixed, // IsMaxFixed _MAF + NonCacheable, // Cacheable _MEM + ReadWrite, // ReadAndWrite _RW + 0, // AddressGranularity _GRA + 0, // AddressMinimum _MIN + 0, // AddressMaximum _MAX + 0, // AddressTranslation _TRA + 1, // RangeLength _LEN + , // ResourceSourceIndex + , // ResourceSource + BAR0 // DescriptorName + ) + }) + + Method (_CRS, 0x0, NotSerialized) + { + CreateQwordField (RBUF, ^BAR0._MIN, EMIN) + CreateQwordField (RBUF, ^BAR0._MAX, EMAX) + CreateQwordField (RBUF, ^BAR0._LEN, ELEN) + Store (\_SB.EMNA, EMIN) + Store (\_SB.ELNG, ELEN) + Subtract (Add (\_SB.EMNA, \_SB.ELNG), 1, EMAX) + Return (RBUF) + } + + Method (_STA, 0x0, NotSerialized) + { + If (LNotEqual (\_SB.EPCS, 0)) + { + Return (0xF) + } + Return (0x0) + } + + } // end EPC Device +} // End of Scope(\_SB) |