GitLab

Detail:
  s/ARMops - Added branch predictor maintenance to WB_CR7_LDa ARMops. If the entire instruction cache is being invalidated then the branch predictors will be invalidated for us, but for ranged invalidation we need to handle it ourselves.
Admin:
  Tested briefly on Raspberry Pi with high processor vectors
  Appears to fix Configure and its plugins misbehaving in various ways


Version 5.35, 4.79.2.173. Tagged as 'Kernel-5_35-4_79_2_173'

Detail:
  s/NewReset - WimpIconiseButton is bit 7 of WimpDragMoveLimitCMOS, not bit 2
Admin:
  Tested on Raspberry Pi


Version 5.35, 4.79.2.172. Tagged as 'Kernel-5_35-4_79_2_172'

Default CMOS tweaks now apply for the RPi hardware. Was missed in
the previous commit.

You can now build the Kernel without the ROM debug output stuff
that's enabled for odd-numbered builds, by passing FREEZE_DEV_REL=TRUE
into the makefile. For example, in the Components file, you'd add:

  -options FREEZE_DEV_REL=TRUE

onto the Kernel line.

Version 5.35, 4.79.2.171. Tagged as 'Kernel-5_35-4_79_2_171'

The kernel recently took back ownership of the *CACHE command and it's configure counterpart, but wasn't reading the CMOS value on startup.
Spotted while looking at bus transactions on IOMD, and wondering where they all are, then realising it's all running from the cache.

Version 5.35, 4.79.2.170. Tagged as 'Kernel-5_35-4_79_2_170'

- LMTransport IP (was NetBEUI)
- FreewayAutoAddress now "off"
- WimpIconiseButton now "on"
- CDROMDrives now 0 for RPi (was 1)

Version 5.35, 4.79.2.169. Tagged as 'Kernel-5_35-4_79_2_169'

Detail:
  s/HAL, s/NewReset - Moved IIC initialisation to just after timer initialisation, and crucially, before keyboard scan initialisation. This makes things a lot easier for the HAL if it wants to use IIC during the keyboard scan (previously IIC would be enabled inbetween HAL_KbdScanSetup and the first call to HAL_KbdScan)
  hdr/HALDevice - Added a device ID for the Pandora audio controller
Admin:
  Tested on Pandora


Version 5.35, 4.79.2.168. Tagged as 'Kernel-5_35-4_79_2_168'

STB default = off, desktop default = on.
Collapsed single use of 'ErrorsInR0' switch.

Version 5.35, 4.79.2.167. Tagged as 'Kernel-5_35-4_79_2_167'

Detail:
  hdr/HALDevice - Added new HID device type, Keyboard sub-type, and Pandora keyboard device ID
Admin:
  Tested on Pandora, rev C2 BB, rev A2 BB-xM, rev C1 TouchBook


Version 5.35, 4.79.2.166. Tagged as 'Kernel-5_35-4_79_2_166'

Detail:
  Merge the RPi branch with the HAL branch, ending RPi branch development
  Brief summary of changes brought in:
  * Added HAL_VideoStartupMode to allow the HAL to specify a startup mode for the OS
  * Fixed addresses being sent to GraphicsV_SetDMAAddress being wrong for external framestores (addresses were given as if internal framestore was in use)
  * Add InverseTextTransparency option for limited compile-time support for targets where framebuffer alpha channel is important
  * Fix ConfiguredLanguage for non-Tungsten builds
  * Update ARMv6 CPU detection to read cache parameters from cache type register instead of using KnownCPUTable
  * Add HALDebugHexTX/TX2/TX4 debug routines for writing out numbers via HAL
  * Use HAL_TimerIRQClear when clearing timer 0 interrupt instead of just HAL_IRQClear
  * Initialise FileLangCMOS using defines from Hdr:FSNumbers instead of magic numbers. Use SDFS on M_ARM11ZF.
  * Improved software mouse pointer support; software pointer now removed & restored in some of the same places the text cursor is
  * Improve support for external framestores; driver is now able to grow/shrink/move the framestore on mode changes if bit 5 of GraphicsV_DisplayFeatures R0 is set
  * GraphicsV_FramestoreAddress now has a default claimant which calls HAL_VideoFramestoreAddress
Admin:
  Tested on Raspberry Pi, Iyonix, OMAP3, IOMD


Version 5.35, 4.79.2.165. Tagged as 'Kernel-5_35-4_79_2_165'

Detail:
  Merge the HAL branch into the RPi branch, prior to merging RPi to HAL
  Brief summary of main changes brought in:
  * Added *cache functionality previously provided by ARM module
  * Added "CMOS RAM reset" message on startup when CMOS has been wiped by keypress
  * Renamed HAL Video entries from HAL_Video_XXX to HAL_VideoXXX
  * Dropped mjsHAL macros, GRAB/STASH macros
  * Fixed pseudo-VRAM allocation when machine has exactly 16MB of RAM
  * Added OS_Hardware 5
  * Use OS_SerialOp GetDeviceName for getting serial device name
  * Drop HAL_MonitorLeadID
  * Rework default GraphicsV_IICOp handler
Admin:
  Tested on Raspberry Pi with high processor vectors


Version 5.35, 4.79.2.147.2.23. Tagged as 'Kernel-5_35-4_79_2_147_2_23'

Fix addresses sent to GraphicsV_SetDMAAddress when external framestore in use. Add ID for BCM2835 VDU HAL device.

Detail:
  hdr/KernelWS, s/vdu/vdudriver, s/vdu/vduwrch - Fixed wrong addresses being sent to GraphicsV_SetDMAAddress when an external framestore is in use. Previously VideoPhysAddr was being treated as if it was the base of screen memory, but that's only the case if an internal framestore is in use. Since VideoPhysAddr is part of PhysRamTable it's not possible to change it to point to an external framestore, so a new workspace variable, TrueVideoPhysAddr, is used instead.
  hdr/HALDevice - Added device ID for BCM2835 VDU device
  s/PMF/IIC - Corrected an incorrect comment in IICDoOp
Admin:
  Tested on Raspberry Pi with high processor vectors


Version 5.35, 4.79.2.147.2.22. Tagged as 'Kernel-5_35-4_79_2_147_2_22'

Detail:
  hdr/GPIODevice - Removed existing 'unknown' revision and added 'B rev 1' and 'B rev 2' in its place, ready for new HAL that can report the board revision.
Admin:
  Tested on Raspberry Pi (B rev 1)


Version 5.35, 4.79.2.147.2.21. Tagged as 'Kernel-5_35-4_79_2_147_2_21'

Detail:
  Docs/RPiNotes - Deleted, contents no longer relevant
  s/HAL, s/Kernel, s/vdu/vduswis, s/pmf/key - Cleaned up debug code
  s/NewIRQs - No need to piggy back on timer 0 IRQ to generate a fake VSync; PushModeInfo already claims/releases TickerV as appropriate if video driver doesn't provide a VSync IRQ.
  s/NewReset - Re-enable LookForHALRTC call, the stack imbalance bug was fixed before the Pi changes were merged in
  s/vdu/vducursoft - Streamline PostWrchCursor a bit by only preserving R14 around RestorePointer if the software pointer is in use
  s/vdu/vdudriver - Amend ModeChangeSub improvements to ensure old external framestore handling logic is used if driver doesn't support framestore growth/realloc
Admin:
  Tested on Raspberry Pi with high processor vectors
  Kernel now looks to be in a good state for merging back into HAL branch
  Note - Software mouse pointer support in vducursoft only checks HALVideoFeatures, so doesn't take into account the capabilities of any GraphicsV driver that may be in use.


Version 5.35, 4.79.2.147.2.20. Tagged as 'Kernel-5_35-4_79_2_147_2_20'

Version 5.35, 4.79.2.147.2.19. Tagged as 'Kernel-5_35-4_79_2_147_2_19'

Detail:
  hdr/HALEntries - Add new HAL_Video_StartupMode HAL entry to allow the HAL to specify a startup mode
  s/HAL, s/Kernel - Tweaked debug routines
  s/vdu/vdudriver - Make use of HAL_Video_StartupMode in InitialiseMode to decide what initial mode should be. Clean up some hacks & debug. Improve handling of external framestores; if bit 5 of GraphicsV_DisplayFeatures r0 is set, the kernel will now allow the display driver to grow/shrink/move its framestore in response to mode changes.
  s/vdu/vdugrafv - Adjust default GV_FramestoreAddress implementation to only claim vector if HAL returns a framestore
  s/vdu/vduswis - Re-enable FindOKMode
Admin:
  Tested on Raspberry Pi with high processor vectors


Version 5.35, 4.79.2.147.2.18. Tagged as 'Kernel-5_35-4_79_2_147_2_18'

Detail:
  hdr/HALDevice - Added new HAL devices and types from RPi branch
Admin:
  Untested!


Version 5.35, 4.79.2.164. Tagged as 'Kernel-5_35-4_79_2_164'

Detail:
  s/HAL - Fix crash in OS_Hardware 4/5 when encountering devices which are newer than the caller supports
Admin:
  Untested, but same fix as Pi branch


Version 5.35, 4.79.2.163. Tagged as 'Kernel-5_35-4_79_2_163'

Fix crash in OS_Hardware 4 when encountering devices which are newer than the caller supports. Add new device IDs for Raspberry Pi audio devices.

Detail:
  s/HAL - Fixed crash in OS_Hardware 4 when encountering devices which are newer than the caller supports
  hdr/HALDevice - Added new HAL devices for Raspberry Pi audio devices
Admin:
  Tested on Raspberry Pi with high processor vectors


Version 5.35, 4.79.2.147.2.17. Tagged as 'Kernel-5_35-4_79_2_147_2_17'

Detail:
  hdr/HALDevice - Add new inter-processor communications device type. Add device IDs for Pi/BCM2835 GPIO interface & VCHIQ
  hdr/GPIODevice - Add Raspberry Pi GPIO type & interface revision (currently 'unknown')
Admin:
  Tested in Raspberry Pi ROM with high processor vectors
  New IDs required for BCM2835-0_17


Version 5.35, 4.79.2.147.2.16. Tagged as 'Kernel-5_35-4_79_2_147_2_16'

Detail:
  Revisions Kernel-5_35-4_79_2_153 and Kernel-5_35-4_79_2_161 merged with one
  trivial conflict.
Admin:
  Confirmed that this builds, but not tested on hardware.

Version 5.35, 4.79.2.147.2.15. Tagged as 'Kernel-5_35-4_79_2_147_2_15'

Detail:
  s/PMF/osinit - MonitorLeadType is now stored in ZeroPage again, instead of at whatever R1 happens to point at (which seemed to be 0 when I tried it)
Admin:
  Tested on BB-xM with high processor vectors


Version 5.35, 4.79.2.162. Tagged as 'Kernel-5_35-4_79_2_162'

Previously HAL_PhysInfo took one of two routes to get the arrangment table of arrangement table size.
Reorganised to accept a subreason to allow other physical info to be requested.


Version 5.35, 4.79.2.161. Tagged as 'Kernel-5_35-4_79_2_161'

Detail:
  s/NewReset - Change default filesystem to SDFS for ARM11 builds, as that's somewhat more appropriate than ADFS when on the Pi. Also now using filesystem numbers from Hdr:FSNumbers instead of magic numbers.
Admin:
  Builds, but untested


Version 5.35, 4.79.2.147.2.14. Tagged as 'Kernel-5_35-4_79_2_147_2_14'

Detail:
  hdr/HALDevice - Added new device IDs used by BCM2835 DMA controller & DMA channels
Admin:
  Tested in BCM2835 ROM


Version 5.35, 4.79.2.147.2.13. Tagged as 'Kernel-5_35-4_79_2_147_2_13'

Detail:
  This functions like OS_Hardware 4, but enumerates devices in the
  chronological order of registration.
Admin:
  Builds, but untested.

Version 5.35, 4.79.2.160. Tagged as 'Kernel-5_35-4_79_2_160'

No accepts  r0 = b31-24 set 0
                 b23-16 fully qualified IIC address
                 b15-0  starting offset
            r1 = buffer pointer
            r2 = number of bytes to tranfer
            r4 = b31-24 display number
                 b23-16 head
                 b15-0  reason code (=14)
Now returns r0 = result codes as per HAL_IICTransfer()
            r1 = buffer pointer incremented by number of bytes transferred
            r2 = number of bytes *not* transferred
            r4 = 0
Removed '_' after Video in entry numbers to be consistent with other HAL entry naming, and HAL_VideoFlybackDevice.
Added IICStatus return numbers to Hdr:HALEntries.
Stop calling HAL_MonitorLeadID as only IOMD implemented it - just guess VGA until the graphics driver says otherwise.

Version 5.35, 4.79.2.159. Tagged as 'Kernel-5_35-4_79_2_159'

Admin:
  Required by HAL/OMAP3 0.68

Version 5.35, 4.79.2.158. Tagged as 'Kernel-5_35-4_79_2_158'

NewReset.s:
The one remaining use of SetBorder was to denote the user asked for and got a CMOS reset, which in the HAL case emitted a warning because setting the border is potentially complicated/slow.
To solve this, the reset is noted and replaces the normal RISC OS banner with a warning message. The behaviour and text for this comes from the BBC Master, though the escape key is used in place of break since a reset isn't actually needed.
Moved the unused cputable inside its corresponding switch.
Two occurrences of WriteS_Translated would have executed the message in the V=1 case.
KernelWS/Resources:
Flag added to workspace, translation added to messages files.
Heapman.s:
Commented out use of SetBorder removed.
Kernel.s:
SetBorder macro removed.
Middle.s:
Switched out use of SetBorder removed.
Super1.s:
Conditional WriteS_Translated would try to execute the message in the opposite condition case.


Version 5.35, 4.79.2.157. Tagged as 'Kernel-5_35-4_79_2_157'

Detail:
  s/VMSAv6 - Prefetch abort handler address now looked up as ZeroPage-relative
Admin:
  Untested, but same fix as on RPi branch


Version 5.35, 4.79.2.156. Tagged as 'Kernel-5_35-4_79_2_156'

Detail:
  s/VMSAv6 - Prefetch abort handler address now looked up as ZeroPage-relative
Admin:
  Tested on Raspberry Pi with high processor vectors
  Previous commit was a harmless, unintentional merge from HAL branch to RPi branch due to folder mixup


Version 5.35, 4.79.2.147.2.12. Tagged as 'Kernel-5_35-4_79_2_147_2_12'

Detail:
  s/VMSAv6 - Prefetch abort handler address now looked up as ZeroPage-relative
Admin:
  Tested on Raspberry Pi with high processor vectors


Version 5.35, 4.79.2.147.2.11. Tagged as 'Kernel-5_35-4_79_2_147_2_11'

Detail:
  s/Middle - Callback and breakpoint environment handler workspace is now specified as being ZeroPage relative
Admin:
  Untested, but same fix as on RPi branch


Version 5.35, 4.79.2.155. Tagged as 'Kernel-5_35-4_79_2_155'

Detail:
  s/Middle - Callback and breakpoint environment handler workspace is now specified as being ZeroPage relative
Admin:
  Tested on Raspberry Pi with high processor vectors


Version 5.35, 4.79.2.147.2.10. Tagged as 'Kernel-5_35-4_79_2_147_2_10'

With no VRAM, in Kernerl.s.HAL line 370, the less than 16M case sets aside half the RAM as available for video (more than, it uses no more than 32M) but the exactly equals 16M case set aside none.
Add some exports to hdr.HALEntries to define the subreasons to OS_Hardware.

Version 5.35, 4.79.2.154. Tagged as 'Kernel-5_35-4_79_2_154'

The only fake result now is the hard ROM amount, which is hardwired to 4MB and might not be correct.
Unrelated changes
 hdr.HALDevice: Assign a device for VIDC20.
 hdr.KernelWS: Reorder into ascending order, remove legacy addresses.
 s.ARM600: Move PhysSpaceSize inside :LNOT:HAL switch.
 s.Kernel: Move PhysSpaceSize inside :LNOT:HAL switch.

Version 5.35, 4.79.2.153. Tagged as 'Kernel-5_35-4_79_2_153'

Detail:
  Hdr/HALEntries - Added HAL_UARTDefault entry, as per HAL branch
Admin:
  Untested


Version 5.35, 4.79.2.147.2.9. Tagged as 'Kernel-5_35-4_79_2_147_2_9'

Detail:
  hdr/HALEntries - Brought in line with RPi branch, plus addition of new HAL_UARTDefault HAL entry, to allow DualSerial to determine which (if any) of the HAL UARTs should be the default UART accessed via OS_SerialOp
  s/GetAll - Add GET of Hdr:SerialOp
  s/PMF/osbyte - Use OS_SerialOp 10 when constructing filename to open for OS_Byte 2
Admin:
  Tested in OMAP3, Tungsten ROMs


Version 5.35, 4.79.2.152. Tagged as 'Kernel-5_35-4_79_2_152'

The kernel already looks after all other aspects of the ARM CPU, so can look after the cache control command too.
 HelpStrs.s:New tokens for help and syntax
 CmdHelp.s:UK help and syntax
 Arthur3.s:Tables updates for *CONFIGURE/STATUS, lined some stuff up, default error text sync'd with Hdr:NewErrors
 MoreComms.s:Parsing and doing of *CACHE
 Utility.s:Hashing table updated for *CACHE
Other minor changes
 hdr/Options:Bring 'MosVer' into the private header
 hdr/RISCOS:aasm aliases for SP removed, MainVars and MosVer made private, added definition of the start of application space
 HeapMan.s:Use of GRAB changed to Pull
 Offset of TutuCMOS changed for more informative PrintSoundCMOS
 PMF/osbyte.s:Use OsBytes header file in place of MainVars

Version 5.35, 4.79.2.151. Tagged as 'Kernel-5_35-4_79_2_151'

Detail:
  An undocumented entry condition of TickOne is that r0 contains the device
  number corresponding to Timer0. This must be passed to HAL_IRQClear on
  some platforms.
Admin:
  Tested only on a Raspberry Pi. Also added enumeration of entry numbers in
  comments in Hdr:HALEntries - a handy reference when debugging from the
  command line!

Version 5.35, 4.79.2.147.2.8. Tagged as 'Kernel-5_35-4_79_2_147_2_8'

Detail:
  (list files and functions that have changed)
Admin:
  shown running in system
  (highlight level of testing that has taken place)
  (bugfix number if appropriate)


Version 5.35, 4.79.2.147.2.7. Tagged as 'Kernel-5_35-4_79_2_147_2_7'