GitLab

Detail:
  hdr/ARMops - Added Cortex_A8 processor type, new ARM architecture number
  hdr/Options - Enabled various kernel debug options
  s/ARMops - Added Cortex-A8/OMAP3530 to known CPUs list. Ignore cache type register for ARM architecture &F.
  s/NewIRQs - Increase MaxInterrupts to 96
Admin:
  Brief testing under qemu-omap3.



Version 5.35, 4.79.2.98.2.1. Tagged as 'Kernel-5_35-4_79_2_98_2_1'

Detail:
  * Added some documentation on previously undocumented HAL calls
  * Corrected NVMemoryFlag_Provision bitmask to match documentation
  * Bugfix: NVMemoryFlag_ProtectAtEnd flag was being ignored
Admin:
  Not tested

Version 5.35, 4.79.2.98. Tagged as 'Kernel-5_35-4_79_2_98'

Version 5.35, 4.79.2.87. Tagged as 'Kernel-5_35-4_79_2_87'

        HAL_Video_IIC_Op
Detail:
Admin:
     JB  Castle IP

Version 5.35, 4.79.2.79. Tagged as 'Kernel-5_35-4_79_2_79'

* Added use of CDVPoduleIRQs (from Hdr:Machine)
* Fixed checksum corruption in OS_NVMemory block writes ending just below
  the checksum byte.
* Fixed R4 corruption by OS_Byte 162 with certain HALs.

Version 5.35, 4.79.2.71. Tagged as 'Kernel-5_35-4_79_2_71'

Detail:
  174: left border size
  175: bottom border size
  176: right border size
  177: top border size
Admin:
  Not tested.

Version 5.35, 4.79.2.68. Tagged as 'Kernel-5_35-4_79_2_68'

Now pads its HAL entry table with NullHALEntry if the HAL is providing fewer entries than the Kernel needs. Helps internal Kernel use of CallHAL, but doesn't affect external OS_Hardware users.

Version 5.35, 4.79.2.67. Tagged as 'Kernel-5_35-4_79_2_67'

  [Not fully implemented - for now leaves at least 16MB free if only
  one RAM area; was 1MB].
* Added HAL_USBControllerInfo, HAL_MonitorLeadID and HAL_Video_Render.
* Added HAL->OS call OS_IICOpV.
* OS_MMUControl now allows independent control of I and C bits.
* Added facility to deactivate keyboard debounce (magic word "NoKd" in
  R2 in KeyV 0).
* Fixed problem with RAM amounts not a multiple of 4MB.
* Supremacy bit (in VDU 19) now sets all 8 bits of supremacy.
* Added PaletteV 14 (reads gamma tables).
* Added Supremacy transfer functions (like gamma correction, but for
  supremacy). Allows easy global supremacy effects in a mode-independent
  fashion. Controlled with PaletteV 15,16.
* Added modes 50-53 (320x240, 1,2,4,8bpp). Intended for small LCD.
* Added 13.5kHz versions of TV modes (selected by Hdr:Machine).
* Upped desktop version to 5.06.

Version 5.35, 4.79.2.66. Tagged as 'Kernel-5_35-4_79_2_66'

Added "fast" flash tool for Customer L, allowing ROMs to be sent serially at
115200 baud not 9600 baud.
Fix to VDU despatch for ARMv4 and later.
Fixes to power on delete keyboard and keyboard timeout
Implemented MemoryReadPhys and MemoryAmounts with the HAL.

Version 5.35, 4.79.2.59. Tagged as 'Kernel-5_35-4_79_2_59'

OSDelink/RelinkApp now work on the list in opposite orders so that the order of vector claims doesn't get toggled.

Fix for *FX5 not working due to a TST having been swapped for CMP.
Checkprotectionlink option added to HAL version so CMOS lock is
implemented.
Updated HAL docs.

Version 5.35, 4.79.2.58. Tagged as 'Kernel-5_35-4_79_2_58'

Detail:
  * Merged in the change to RISC OS 4.02 kernel that moved the GSTrans
    workspace out of scratch space.
  * Fixed a few bugs in callback postponement, and interrupt holes in
    callback dispatch. See Docs.CallbackChange for full info.
  * Fixed SystemSizeCMOS to SysHeapCMOS - wouldn't build as was.
  * Added an export of a C version of Hdr:HALDevice, based on the Hdr2H
    translation but with an additional struct definition. Required by
    SoundControl 1.00.
  * Added some additional location and ID allocations to Hdr:HALDevice.
    Required by today's HAL and SoundControl.
Admin:
  Partially tested.

Version 5.35, 4.79.2.56. Tagged as 'Kernel-5_35-4_79_2_56'

*Configure ANYTHINGsize was broken due to not setting R0 to ReadUnsigned
IIC ack message uninternationalised
OS_Memory was saying we only had 4M of RAM
VDU4 scrolling when output was switched to sprite was causing corruption
on use of CTRL-J and CTRL-K
Default SystemSize CMOS set to 32k

Version 5.35, 4.79.2.55. Tagged as 'Kernel-5_35-4_79_2_55'

Also enabled the Service_ModulePostInit/Final service calls now that the
service call allocations have been confirmed.

Version 5.35, 4.79.2.54. Tagged as 'Kernel-5_35-4_79_2_54'

Detail:
  * Rejigged documented meaning of device "Location" field so that we can
    fit full PCI locations in.
  * Defined lots of device "Type" values in Hdr:HALDevice.
  * Removed obsolete DMA-related HAL entries in Hdr:HALEntries (no longer
    required by DMAManager 0_15-4_4_2_6, no longer provided by Tungsten HAL
    0.07).
  * OS_Hardware 2 and 3 actually work now.
  * Changed OS_Hardware 4 to take a maximum major version number to match.
  * HAL workspace is now USR mode readable.
  * Service calls issued after module initialisation/finalisation (see
    Docs.ModPostServ).
Admin:
  OS_Hardware tested, service calls not tested.

Version 5.35, 4.79.2.52. Tagged as 'Kernel-5_35-4_79_2_52'

Detail:
  Lots of changes since last version, at least the following:
  * Updated OS timestamp, removed alpha status
  * Negative INKEY OS version changed to &AA
  * GraphicsV is now alocated vector number &2A
  * ROM moved up to &FC000000
  * Max application slot increased to 512 Mbytes (for now)
  * Max size of RMA increased to 256 Mbytes
  * RMA is now first-created dynamic area (so it gets lowest address after
    top of application slot)
  * OS_Memory 10 reimplemeted
  * New OS_ReadSysInfo 6 values 18-22 added
  * OS_ReadSysInfo 8 gains flag bit to indicate soft power-off
  * Misc internal top-bit-set-address fixes
  * *ChangeDynamicArea can take sizes in megabytes or gigabytes
  * Magic word "&off" in R0 passed to OS_Reset powers down if possible
  * Added acceleration: block copy; CLS; text window scroll up; rectangle
    fill
  * Disabled LED flashing in page mode (liable to crash)
  * Masked sprite plot and VDU 5 text avoids reading the screen if poss...

In the No26bitCode case (ie when abort handlers are entered in ABT32 mode), if lazy task swapping was enabled and a data abort occurred that was not a page translation fault, then the code in AMB_LazyFixUp to map in the whole application slot was being circumvented, leading to problems for abort handlers in application space because r14_abt was corrupted by any abort due to accessing the abort handler itself. The test of the FSR (to compensate for the FAR being unusable for external aborts) which prompted the circumvention has therefore been moved inside AMB_LazyFixup.

Also now preserves the FSR and FAR across AMB_LazyFixUp, so they are now
visible from application abort handlers if desired.

Version 5.35, 4.79.2.50. Tagged as 'Kernel-5_35-4_79_2_50'

Detail:
  * Implemented OS_Hardware 2, 3 and 4 as described in Docs.HAL.NewAPI.
  * Added new OS->HAL and HAL->OS routines to register HAL devices with the
    OS during hard resets.
  * Updated Docs.HAL.NewAPI to correct inconsistencies, fill in missing
    definitions, and allow for interrupt sharing.
  * Now uses OS_LeaveOS to trigger callbacks after ROM module init.
Admin:
  Untested. Requires new HAL.

Version 5.35, 4.79.2.49. Tagged as 'Kernel-5_35-4_79_2_49'

Version 5.35, 4.79.2.48. Tagged as 'Kernel-5_35-4_79_2_48'

IOMD HAL:
  enables fast clock for StrongARM on Medusa h/w

Kernel:
  ARMops for StrongARM implemented. Tested moderately on
  HAL/32-bit minimal desktop build for Risc PC. Could do
  with more testing later. eg. does reentrant cache
  cleaning support really work?
  Lazy task swapping is enabled for revT or later, wahey.

Version 5.35, 4.79.2.42. Tagged as 'Kernel-5_35-4_79_2_42'

1) Bring IOMD HAL more up to date. Add support for new call HAL_CleanerSpace (preparation for StrongARM kernel support).

2) In kernel, add HAL_CleanerSpace call (preparation for
StrongARM and XScale core support). Fix bug found with
ARMv3 support during test on Risc PC.

3) Implement new API for kernel SWIs that have used top
bits of addresses as flags. The new API has an extra
flag that must be set, so kernel can distinguish and
support both APIs. The reason for all this is that
addresses are 32-bits now, people, keep up there. Briefly:

  OS_HeapSort
    bit 31 of r0 set for new API, r1 is full 32-bit address
    flags move from r1 bits 31-29 to r0 bits 30-28

  OS_ReadLine
    bit 31 of r1 set for new API, r0 is full 32-bit address
    flags move from bits 31,30 of r0 to bits 30,29 of r1

  OS_SubstituteArgs
    bit 31 of r2 set for new API, r0 is full 32-bit address
    flag moves from bit 31 of r0 to bit 30 of r2

Tested on Risc PC and briefly on Customer A 2

Ta

Version 5.35, 4.79.2.41. Tagged as 'Kernel-5_35-4_79_2_41'

Ursula. Quite a hairy code merge really, so let's hope it is
worth it to someone. What you get (back after 2 or 3 years):
- much more efficient for largish numbers of DAs (relevance
  to current build = approx 0)
- fancy reason codes to support fast update of
  Switcher bar display (relevance = 0)
- support for clamped maximum area sizes, to avoid address
  space exhaustion with big memory (relevance = 0)
- better implementation of shrinkable DAs, performance
  wise (if lots of DAs, relevance = approx 0)
- support for 'Sparse' DAs. Holey dynamic areas, Batman!
  (relevance, go on someone use the darned things)
Moderately development tested on HAL/32bit ARM9 desktop.
Note the Switcher should be compiled to use the new
reason codes 6&7, for fabled desktop builds.

Also, during this work, so I could see the wood for the
trees, redid some source code clean up, removing pre-Medusa
stuff (like I did about 3 years ago on Ursula, sigh). That's
why loads of source files have changed. The new DA stuff
is confined pretty much to hdr.KernelWS and s.ChangeDyn.

Ta.

Version 5.35, 4.79.2.38. Tagged as 'Kernel-5_35-4_79_2_38'

Look for LongCommandLine flag, command line size currently
set at 1k.
For HAL/32bit builds, the kernel buffer space is at high
(top bit set) address, which may break some code using signed
comparisons. So *beware* that there may be some latent
bugs in old kernel code using these buffers, not yet found.
One such bug, in s.Arthur2 found and fixed.
Tested moderately on ARM9 desktop build.
Lovely to reimplement things I did two and half years ago.

Version 5.35, 4.79.2.37. Tagged as 'Kernel-5_35-4_79_2_37'

Moved IOAllocPtr and IOAllocLimit to SkippedTables - the ARM9 got away with it because of the writeback cache, but poor souls like Simon condemned to an eternity of the ARM7 were a bit stuffed.

Version 5.35, 4.79.2.34. Tagged as 'Kernel-5_35-4_79_2_34'

* Allows HAL-driven software resets.
* Sound buffers corrected to be uncacheable.

Version 5.35, 4.79.2.33. Tagged as 'Kernel-5_35-4_79_2_33'

Reimplement Lazy task swapping, an amusing idea from Ursula, would have done it sooner but couldn't be bothered (humour).

Currently activates for all ARMs flagged as base-restored
abort model. No handling of eg. StrongARM pre-revT bug, but
then the kernel no longer runs on StrongARM (progress).
Still some details to fix: all aborts in current app space
assumed to be missing pages, but this must be fixed to
handle abort code in app space, things like debuggers
marking code read only.

Plus, small fixes:
  OS_Memory 8 returns vaguely useful info for RAM,VRAM
  in HAL build (temporary partial implementation)
  Broken handling of old BBC commands with (fx,tv etc)
  with no spaces fixed (fudgeulike code from Ursula,
  now 32-bit).

Version 5.35, 4.79.2.31. Tagged as 'Kernel-5_35-4_79_2_31'

* Kernel puts sensible default FIQ handler in through the HAL.
* Fix to temporary page uncaching code.

Version 5.35, 4.79.2.30. Tagged as 'Kernel-5_35-4_79_2_30'

spectacular new OS_Memory reason codes 13 map permanent I/O space, return logical address 14 access temporary physical mapping 15 release temporary physical mapping

DA creation and I/O space creation now avoid collision if address
space fills

Version 5.35, 4.79.2.28. Tagged as 'Kernel-5_35-4_79_2_28'

Version 5.35, 4.79.2.20. Tagged as 'Kernel-5_35-4_79_2_20'

An attempt to do NVMemory by using part of the Flash that the OS is sitting
in for Customer L. Programming algorithm works, but I'm not confident that the
Kernel does the right thing yet.

Version 5.35, 4.79.2.19. Tagged as 'Kernel-5_35-4_79_2_19'

Version 5.35, 4.79.2.18. Tagged as 'Kernel-5_35-4_79_2_18'

Detail:
  HAL entries have been entered for the Customer L UART (very much like the ARM
PrimeCell, rather than the 16550).
Admin:
  It builds.

Version 5.35, 4.79.2.16. Tagged as 'Kernel-5_35-4_79_2_16'

First attempt at ARM9 support, and general clean-up of old ARM-specific code, now using vectored ARMops.

Not tested.

Version 5.35, 4.79.2.14. Tagged as 'Kernel-5_35-4_79_2_14'

Check-in of the few last-minute changes for the Customer L demo. Nothing exciting, apart from an extended touchscreen API.

Version 5.35, 4.79.2.13. Tagged as 'Kernel-5_35-4_79_2_13'

Version 5.35, 4.79.2.12. Tagged as 'Kernel-5_35-4_79_2_12'

more use of ARMops in page manipulation, change register usage of ARmops tested by kernel boot to star prompt only

Version 5.35, 4.79.2.11. Tagged as 'Kernel-5_35-4_79_2_11'

More stuff. Up to the desktop now; cache on, working keyboard. Some source restructuring to start to make splitting it up into several object files more feasible.

Version 5.35, 4.79.2.9. Tagged as 'Kernel-5_35-4_79_2_9'