GitLab

Various OMAP3 HAL power management improvements, plus add support for board config autodetection via Linux machine ID

Detail:
  s/board, hdr/board - Add Linux machine ID & available mixer channels to board config table
  s/Top - Add new entry point at offset &64, for booting as a fake Linux kernel. Searches the board config table until it finds a config matching the machine ID passed in R1. Also minor ROM copy optimisation, unsigned pointer comparison fixes
  s/Audio, hdr/Audio - Use board config to lock-out mixer channels that aren't connected to any hardware, to avoid excessive power drain or other problems if the channels get turned on. Also perform many other setting tweaks to tidy up default settings for unused mixer paths/channels.
  s/Video - Fix Video_Init logic when deciding whether to reset DSS, enable DSI PLL drift guard
  s/I2C - Increase I2C timeout values, since the previous values were perhaps a bit low
  s/Audio, s/I2C, s/Interrupts, s/RAM, s/SDMA, s/Timers, s/UART, hdr/UART, s/USB, s/Video - Enable autoidle/smart idle where possible to help save power.
Admin:
  Tested on rev C2 beagleboard


Version 0.21. Tagged as 'OMAP3-0_21'

Update OMAP HAL to support different board configs, plus use new YearLOIsGood flag to ensure correct RTC handling, plus other misc tidying

Detail:
  The OMAP HAL now has multiple entry points, one per board config. See Top.s/board.s for more info.
  audio.s - Moved APLL_CTL value to board config
  board.s - New file to list all the settings for the different board configs
  boot.s - Change HAL_Init to deal with the new board config stuff
  debug.s - Debug UART now specified in board config
  GPIO.s - A few utility functions for handling OMAP/TPS GPIO pins
  I2C.s - Update to use new board config struct
  RAM.s - Disable the beagleboard-specific RAM init code. Instead we'll just rely on u-boot to initialise all our RAM for us.
  RTC.s - Get rid of the magic numbers, and use the YearLOIsGood flag to indicate to RISC OS that YearLO is 2-digit BCD
  Top.s - Got rid of old debug code and rewrote initial flow to handle detecting & storing the board config
  UART.s - Update to use board config struct, support multiple UARTs
  USB.s - Get EHCI PHY power GPIO from board config
  Video.s - Get DVI framer power GPIO and max pixel rate from board config. Add 'PassiveVideo' option, to build a driver that doesn't alter the video output settings - should hopefully result in a usable display on Touch Book, etc.
  board.hdr - Definition of board config table struct
  GPIO.hdr - Add lots of macros for handling OMAP GPIO pins, new constants for OMAP/TPS GPIO
  I2C.hdr - Added I2C transfer block struct, HAL I2C API transfer states (both moved here from other source files)
  omap3530.hdr - Move/remove some unwanted constants, disable DebugChar for now
  StaticWS.hdr - Move I2C transfer block struct to I2C.hdr, add board config struct to HAL workspace, get rid of unused 64K AllocArea
  Timers.hdr - Tidy up constants a bit
  UART.hdr - Add UARTCLK (moved from StaticWS.hdr), UART IRQ #'s
  Makefile - add GPIO.s
Admin:
  Tested on rev C2 beagleboard. Board configs for other board types may be inaccurate in a couple of places.


Version 0.19. Tagged as 'OMAP3-0_19'

Detail:
  Boot.s - Make FIQDebug work again
  Boot.s - Add support for DMA & video devices
  Interrupts.s, hdr/omap3530 - Add 'ExtraDebugInterrupts' option
  hdr/SDMA, SDMA.s, Makefile - DMA code which presents itself to RISC OS as a set of single-buffered, interrupt-driven DMA channels.
  hdr/StaticWS - Add extra DMA, video & debug entries to workspace
  Interrupts.s - Add 'DebugDisablePrevious' debug option for more flexibility in tracking down noncleared IRQs with ExtraDebugInterrupts
  RAM.s - Use DMA to clear RAM on boot. RAM clear now takes less than 1 second on a rev C board, whereas before it used to take several.
  Video.s - Add simple HAL device to expose information needed by upcoming RISC OS module based video driver.
Admin:
  Tested on rev C2 beagleboard.


Version 0.16. Tagged as 'OMAP3-0_16'

Detail:
  Makefile - Enable compilation of s.video
  hdr/StaticWS - New workspace entries for video support
  hdr/Video - Typo fix, VENC registers
  s/Boot - Change initialisation order for video support
  s/Debug - Added DebugMemDump routine
  s/RAM - Added code to verify RAM config, to avoid crash if a board looks like a revision C but doesn't have the extra RAM
  s/Stubs - Disable stub video functions
  s/Video - Working video code, beginnings of TV-out code
Admin:
  Tested on rev C2 beagleboard. Video code may only function correctly if kernel is loaded via u-boot.


Version 0.06. Tagged as 'OMAP3-0_06'

Detail:
  s/RAM - Added v4 to register list in RAM clear routines to ensure correct amount of RAM is cleared
Admin:
  Tested on Rev C2 beagleboard


Version 0.05. Tagged as 'OMAP3-0_05'

Detail:
  s/Boot - Fixes for rev C beagleboard. Added GPIO code.
  s/Debug - DebugHALPrint, DebugHALPrintReg routines
  s/PRCM - PRCM_GetFreqSel added
  s/RAM - Fixes for rev C beagleboard. Sped up RAM clear by using more regs.
  s/Top - Fixes for rev C beagleboard
  s/Video - Video code potentially complete, but full of bugs and so still disabled.
  hdr/GPIO - Added GPIO registers
  hdr/omap3530 - Fixes for rev C beagleboard, GPIO, debug macros, QEMU support for new video code
  hdr/SDRC - Typo fix
  hdr/StaticWS - GPIO, pixel rate entries added
  hdr/Video - DSI PLL registers added
Admin:
  Tested on rev C beagleboard.


Version 0.04. Tagged as 'OMAP3-0_04'

Detail:
  Performs startup procedure suitable for any location in ROM or RAM. UART, timer, counter, interrupt & debug functionality implemented. Video support incomplete and nonfunctional.
Admin:
  Tested with HALTester & RISC OS kernel under qemu-omap3


Version 0.01. Tagged as 'OMAP3-0_01'