Commit ec2adcd8 authored by Michael Ellerman's avatar Michael Ellerman
Browse files

powerpc: Add some documentation of ISA versions 



Add some documentation on which CPU versions map to which ISA
versions. This is all publicly available information, some of it
already in the kernel source, but it's much nicer to have it all in
one place.

Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent 2b874a5c

Documentation/powerpc/isa-versions.rst

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CPU to ISA Version Mapping

==========================



Mapping of some CPU versions to relevant ISA versions.



========= ====================

CPU       Architecture version

========= ====================

Power9    Power ISA v3.0B

Power8    Power ISA v2.07

Power7    Power ISA v2.06

Power6    Power ISA v2.05

PA6T      Power ISA v2.04

Cell PPU  - Power ISA v2.02 with some minor exceptions

          - Plus Altivec/VMX ~= 2.03

Power5++  Power ISA v2.04 (no VMX)

Power5+   Power ISA v2.03

Power5    - PowerPC User Instruction Set Architecture Book I v2.02

          - PowerPC Virtual Environment Architecture Book II v2.02

          - PowerPC Operating Environment Architecture Book III v2.02

PPC970    - PowerPC User Instruction Set Architecture Book I v2.01

          - PowerPC Virtual Environment Architecture Book II v2.01

          - PowerPC Operating Environment Architecture Book III v2.01

          - Plus Altivec/VMX ~= 2.03

========= ====================





Key Features

------------



========== ==================

CPU        VMX (aka. Altivec)

========== ==================

Power9     Yes

Power8     Yes

Power7     Yes

Power6     Yes

PA6T       Yes

Cell PPU   Yes

Power5++   No

Power5+    No

Power5     No

PPC970     Yes

========== ==================



========== ====

CPU        VSX

========== ====

Power9     Yes

Power8     Yes

Power7     Yes

Power6     No

PA6T       No

Cell PPU   No

Power5++   No

Power5+    No

Power5     No

PPC970     No

========== ====



========== ====================

CPU        Transactional Memory

========== ====================

Power9     Yes (* see transactional_memory.txt)

Power8     Yes

Power7     No

Power6     No

PA6T       No

Cell PPU   No

Power5++   No

Power5+    No

Power5     No

PPC970     No

========== ====================

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