Commit Graph

6 Commits

Author SHA1 Message Date
Igor Mammedov
97b525a794
mips: MIPSCPU model subclasses
Register separate QOM types for each mips cpu model,
so it would be possible to reuse generic CPU creation
routines.

Backports commit 41da212c9ce9482fcfd490170c2611470254f8dc from qemu
2018-03-05 00:42:29 -05:00
James Hogan
b35fb57c84
target/mips: Enable CP0_EBase.WG on MIPS64 CPUs
Enable the CP0_EBase.WG (write gate) on the I6400 and MIPS64R2-generic
CPUs. This allows 64-bit guests to run KVM itself, which uses
CP0_EBase.WG to point CP0_EBase at XKPhys.

Backports commit bad63a8008a0aaefcd00542c89bee01623d7c9de from qemu
2018-03-04 01:09:47 -05:00
James Hogan
16d97568e2
target/mips: Add EVA support to P5600
Add the Enhanced Virtual Addressing (EVA) feature to the P5600 core
configuration, along with the related Segmentation Control (SC) feature
and writable CP0_EBase.WG bit.

This allows it to run Malta EVA kernels.

Backports commit 574da58e4678b3c09048f268821295422d8cde6d from qemu
2018-03-04 01:08:19 -05:00
Leon Alrae
a338e9c855
target-mips: enable CM GCR in MIPS64R6-generic CPU 2018-03-04 00:24:09 -05:00
James Hogan
152323fe35
target/mips: Add CP0_Ebase.WG (write gate) support
Add support for the CP0_EBase.WG bit, which allows upper bits to be
written (bits 31:30 on MIPS32, or bits 63:30 on MIPS64), along with the
CP0_Config5.CV bit to control whether the exception vector for Cache
Error exceptions is forced into KSeg1.

This is necessary on MIPS32 to support Segmentation Control and Enhanced
Virtual Addressing (EVA) extensions (where KSeg1 addresses may not
represent an unmapped uncached segment).

It is also useful on MIPS64 to allow the exception base to reside in
XKPhys, and possibly out of range of KSEG0 and KSEG1.

Backports commit 74dbf824a1313b6064bbebb981a7440951d70896 from qemu
2018-03-03 23:55:09 -05:00
Thomas Huth
b2f1326437
Move target-* CPU file into a target/ folder
We've currently got 18 architectures in QEMU, and thus 18 target-xxx
folders in the root folder of the QEMU source tree. More architectures
(e.g. RISC-V, AVR) are likely to be included soon, too, so the main
folder of the QEMU sources slowly gets quite overcrowded with the
target-xxx folders.
To disburden the main folder a little bit, let's move the target-xxx
folders into a dedicated target/ folder, so that target-xxx/ simply
becomes target/xxx/ instead.

Backports commit fcf5ef2ab52c621a4617ebbef36bf43b4003f4c0 from qemu
2018-03-01 22:50:58 -05:00