Vp46xx sgx

[miczyg1]

[miczyg1]

Tested with: https://docs.ethernity.cloud/ethernity-node/prerequisites-ethernity-node/check-sgx-support

Output:

eax: a0660 ebx: 4100800 ecx: 7ffafbff edx: bfebfbff
stepping 0
model 6
family 6
processor type 0
extended model 10
extended family 0
smx: 1

Extended feature bits (EAX=07H, ECX=0H)
eax: 0 ebx: 29c67af ecx: 0 edx: bc000600
sgx available: 1
sgx launch control: 0

CPUID Leaf 12H, Sub-Leaf 0 of Intel SGX Capabilities (EAX=12H,ECX=0)
eax: 1 ebx: 0 ecx: 0 edx: 241f
sgx 1 supported: 1
sgx 2 supported: 0
MaxEnclaveSize_Not64: 1f
MaxEnclaveSize_64: 24
MaxEnclaveSize_64 (MB): 0

CPUID Leaf 12H, Sub-Leaf 1 of Intel SGX Capabilities (EAX=12H,ECX=1)
eax: 36 ebx: 0 ecx: 1f edx: 0

CPUID Leaf 12H, Sub-Leaf 2 of Intel SGX Capabilities (EAX=12H,ECX=2)
eax: 90200001 ebx: 0 ecx: 5d00001 edx: 0
size of EPC section in Processor Reserved Memory, 93 M

CPUID Leaf 12H, Sub-Leaf 3 of Intel SGX Capabilities (EAX=12H,ECX=3)
eax: 0 ebx: 0 ecx: 0 edx: 0
size of EPC section in Processor Reserved Memory, 0 M

CPUID Leaf 12H, Sub-Leaf 4 of Intel SGX Capabilities (EAX=12H,ECX=4)
eax: 0 ebx: 0 ecx: 0 edx: 0
size of EPC section in Processor Reserved Memory, 0 M

CPUID Leaf 12H, Sub-Leaf 5 of Intel SGX Capabilities (EAX=12H,ECX=5)
eax: 0 ebx: 0 ecx: 0 edx: 0
size of EPC section in Processor Reserved Memory, 0 M

CPUID Leaf 12H, Sub-Leaf 6 of Intel SGX Capabilities (EAX=12H,ECX=6)
eax: 0 ebx: 0 ecx: 0 edx: 0
size of EPC section in Processor Reserved Memory, 0 M

CPUID Leaf 12H, Sub-Leaf 7 of Intel SGX Capabilities (EAX=12H,ECX=7)
eax: 0 ebx: 0 ecx: 0 edx: 0
size of EPC section in Processor Reserved Memory, 0 M

CPUID Leaf 12H, Sub-Leaf 8 of Intel SGX Capabilities (EAX=12H,ECX=8)
eax: 0 ebx: 0 ecx: 0 edx: 0
size of EPC section in Processor Reserved Memory, 0 M

CPUID Leaf 12H, Sub-Leaf 9 of Intel SGX Capabilities (EAX=12H,ECX=9)
eax: 0 ebx: 0 ecx: 0 edx: 0
size of EPC section in Processor Reserved Memory, 0 M

Before the change Linux dmesg complained with: x86/cpu: SGX disabled by BIOS After the change: sgx: EPC section 0x90200000-0x95efffff

Tested on VP4670 (apparently with HAP disabled)

[miczyg1]

https://review.coreboot.org/c/coreboot/+/87695 https://review.coreboot.org/c/coreboot/+/87696