[PATCH v11 04/13] x86, sgx: add SGX definitions to msr-index.h

From: Jarkko Sakkinen
Date: Fri Jun 08 2018 - 13:20:12 EST


From: Sean Christopherson <sean.j.christopherson@xxxxxxxxx>

ENCLS and ENCLU are usable if and only if SGX_ENABLE is set and After
SGX is activated the IA32_SGXLEPUBKEYHASHn MSRs are writable if
SGX_LC_WR is set and the feature control is locked.

SGX related bits in IA32_FEATURE_CONTROL cannot be set before SGX is
activated by the pre-boot firmware. SGX activation is triggered by
setting bit 0 in the MSR 0x7a. Until SGX is activated, the LE hash MSRs
are writable to allow pre-boot firmware to lock down the LE root key
with a non-Intel value.

Signed-off-by: Sean Christopherson <sean.j.christopherson@xxxxxxxxx>
Signed-off-by: Haim Cohen <haim.cohen@xxxxxxxxx>
Tested-by: Serge Ayoun <serge.ayoun@xxxxxxxxx>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@xxxxxxxxxxxxxxx>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@xxxxxxxxxxxxxxx>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@xxxxxxxxxxxxxxx>
---
arch/x86/include/asm/msr-index.h | 8 ++++++++
1 file changed, 8 insertions(+)

diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h
index fda2114197b3..a7355fb7344f 100644
--- a/arch/x86/include/asm/msr-index.h
+++ b/arch/x86/include/asm/msr-index.h
@@ -479,6 +479,8 @@
#define FEATURE_CONTROL_LOCKED (1<<0)
#define FEATURE_CONTROL_VMXON_ENABLED_INSIDE_SMX (1<<1)
#define FEATURE_CONTROL_VMXON_ENABLED_OUTSIDE_SMX (1<<2)
+#define FEATURE_CONTROL_SGX_ENABLE (1<<18)
+#define FEATURE_CONTROL_SGX_LE_WR (1<<17)
#define FEATURE_CONTROL_LMCE (1<<20)

#define MSR_IA32_APICBASE 0x0000001b
@@ -545,6 +547,12 @@
#define PACKAGE_THERM_INT_LOW_ENABLE (1 << 1)
#define PACKAGE_THERM_INT_PLN_ENABLE (1 << 24)

+/* Intel SGX MSRs */
+#define MSR_IA32_SGXLEPUBKEYHASH0 0x0000008C
+#define MSR_IA32_SGXLEPUBKEYHASH1 0x0000008D
+#define MSR_IA32_SGXLEPUBKEYHASH2 0x0000008E
+#define MSR_IA32_SGXLEPUBKEYHASH3 0x0000008F
+
/* Thermal Thresholds Support */
#define THERM_INT_THRESHOLD0_ENABLE (1 << 15)
#define THERM_SHIFT_THRESHOLD0 8
--
2.17.0