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Switch default NCB cache policy to MergingIdempotent (i.e. Normal, non-cacheable)
Jeffrey Lee authored 
Detail:
  s/ARMops - Change VMSAv6 cache policy mapping so that default NCB policy maps to Normal, non-cacheable memory rather than Device memory. This allows unaligned accesses to work, and also delivers some major performance improvements for some activities (write performance seems about 2x better than Device)
  Docs/HAL/ARMop_API - Wrap the new barrier ARMop description text to match the rest of the file
Admin:
  Tested on ARM11, Cortex-A7, -A8, -A9
  Note - relaxed memory consistency rules for Normal vs. Device mean that now more than ever, developers authoring device drivers for ARMv6+ need to be careful to use memory barriers in all the right places (preferably the new ARMop barriers exposed by OS_MMUControl 2 to ensure compatibility with all machines)


Version 5.35, 4.79.2.280. Tagged as 'Kernel-5_35-4_79_2_280'
4dff21b8
Name Last commit Last update
..
AMBControl Improve support for VMSAv6 cache policies & memory types. Expose raw ARMops via OS_MMUControl & cache information via OS_PlatformFeatures.
PMF Improve support for VMSAv6 cache policies & memory types. Expose raw ARMops via OS_MMUControl & cache information via OS_PlatformFeatures.
vdu Replace WriteBuffer_Drain ARMop with a suite of memory barrier ARMops
ARM600 Replace WriteBuffer_Drain ARMop with a suite of memory barrier ARMops
ARMops Switch default NCB cache policy to MergingIdempotent (i.e. Normal, non-cacheable)
Arthur2 Make OS_GSTrans be more sensible about what it treats as system variables
Arthur3 Review of Internation switch
ArthurSWIs Add OS_Memory 24 implementation. Change OS_ValidateAddress to use it. Fix kernel leaving the physical access MB in a messy state. Try and protect against infinite abort loops caused by bad environment handlers.
ChangeDyn Improve support for VMSAv6 cache policies & memory types. Expose raw ARMops via OS_MMUControl & cache information via OS_PlatformFeatures.
Convrsions Add OS_Memory 24 implementation. Change OS_ValidateAddress to use it. Fix kernel leaving the physical access MB in a messy state. Try and protect against infinite abort loops caused by bad environment handlers.
End Commit of kernel as featured in release 5.00.
ExtraSWIs Add zero page relocation support
FlashROM 32-bit Kernel.
GetAll Replace WriteBuffer_Drain ARMop with a suite of memory barrier ARMops
HAL Fix DebuggerSpace page to be cacheable
HeapMan Sort out SetBorder
HeapSort Add compressed ROM support. Make more use of ARMv5+ instructions. Other misc tweaks.
KbdResA1 32-bit Kernel.
KbdResPC Add zero page relocation support
KbdResRCMM Reimplement enhancements to kernel Dynamic Area support from
Kernel Replace WriteBuffer_Drain ARMop with a suite of memory barrier ARMops
LibKern More HAL work. IOMD HAL work in progress. Lots of my own little build scripts. Don't touch this.
MEMC1 Import from cleaned 360 CD
MEMC2 Import from cleaned 360 CD
MOSDict Import from cleaned 360 CD
MemInfo
Middle
ModHand
MoreComms
MoreSWIs
Morris
MsgCode
NewIRQs
NewReset
Oscli
SWINaming
Super1
SysComms
TickEvents
UnSqueeze
Utility
VMSAv6