Company		: Applied Data Systems, Inc.	http://www.applieddata.net
Author		: Robert Whaley			
Date		: Mar 26, 2007

Version: 4.20 PXA


DIP SWITCH (S1) Setting	:
   1:		If On, allows flash and mac address to be updated
   2:		If On, suppresses all output on debug port (COM3)

Normally switch 1 is on and switch 2 is off

Signal files:

If these signal files are present on an PCMCIA or CompactFlash Card in the board the following actions are taken:

       GotoBootROMMenu.ads!	  menu mode entered, board does not boot linux.
       SetMACAddress.ads!	  Changes for MAC address before proceeding (see note below).
       ProgramFlash.ads!	  zImage and ramdisk.gz are burned to flash (see note below).
       ProgramADSBootROM.ads!	  adslinux.rom is burned to the boot rom sector of flash (only
				  if board boots from flash).
       DontBootFromPCMCIA.ads!	  does not attempt to boot from PCMCIA or Compact Flash


       When programming boards in manufacturing, the following files
       will normally be present on the PCMCIA card:

         zImage
	 ramdisk.gz
         SetMACAddress.ads!
	 ProgramFlash.ads!
	 ProgramADSBootROM.ads!

       Notes:

       (1) The ethernet chip does not reload the mac address until
           reset, so the mac address displayed by linux on boot will
           be the old mac address unless the board has been reset.

       (2) In addition to zImage, and ramdisk.gz, other files may
           be burned into flash with this bootloader.  Instructions
           will be provided with the configuration if this is the
           case.


Revision

 4.20 PXA
        Allow 64M J3D "stacked" chips to work with the bootloader.

 4.19 PXA
        Allow P30B Flash chips to reprogram the bootloader.
	Fixed bug that avoids mtd parsing of incorrect kernel cmdline.
	Fixed PCMCIA/CF initialization problem that occured when more than one card inserted. 
   
 4.18 PXA
        Support for P30 Flash chips
	Support for 128M VGX boards
	Support for 128M AGX boards (untested)
	When programming flash if file exceeds flash partition size display error and abort
	Minor improvements to memory test failure messages

 4.17 PXA
        Support for K3 Flash chips (with reset lock bug fix and using only CS0)
        Support for 256M AGX boards (untested)
	Add default command line option SERIALGETTY=ttyS1 for bitsyX using BT UART
	Use faster MSC setting for SM501 (improves bandwidth by 50%)
	Retry only 10 times to set the CPU voltage (instead of retrying forever!)

 4.16.vgx3 PXA
        Support for 256M VGX boards
	 
 4.16.vgx2 PXA
        Change initial setting of GPIOs 27 to not be alternate function
        Change initial setting of GPIOs 81, 82, and 83 to output high
	
 4.16.vgx1 PXA
        Change polarity of GPIO79 for revB VGX boards.  Note this release
	also works with lower rev VGX boards.
	
 4.16 PXA
	Update initial VGX register settings
	Fix PCMCIA to test VGX PCMCIA card polarity correctly
	Fix bug that displays wrong value when memory test fails

 4.15 PXA
	Use PSPR register to pass UART address that matches the console
	(allows 'uncompressing...' message to appear on correct tty).
	Update GPIO setting for MMC
	Add delay after DRAM setup to allow GCX to reboot (with out this it hangs).

 4.14 PXA
	Support for Bitsy BT (bluetooth) connector board.
	Change GPIO settings for MMC

 4.13 PXA
	Fix code that was supposed to strip \n, \r, \t from end of cmdline.txt
	Add delay after raising voltage when waking from sleep.
	The VGX board was having a problem waking without this delay.
	
 4.12 PXA
	Fix incorrect default mtd partitions bug intoduced in 4.11
	Fix incorrect parsing of initrd= ramdisk_size=

 4.11 PXA
	Increase default zImage and ramdisk mtd partitions
	Change mtd partitions to default writable (bootloader,
	zImage, and ramdisk were all readonly).
	Remove dependence on mtd partition size on zImage and ramdisk
	loaded from CF.
	Changes to VGX initial GPIO settings

 4.10 PXA
	Support for GCX
	Correct GPIO directions for serial port modem control
	Improve VGX PCMCIA and CF power control 

 4.9 PXA
	Support for VGX
	Support for BitsyX with no power to CF
	Bitsyx PCMCIA and CF power off upon Power on
	Improved ATA compatibility
		 Reserved Sectors recognized
		 Better discrimiation between FAT12 and FAT16

 4.8 PXA

	Support for Rev C BitsyX (with new PCMCIA power scheme)
	Improved ATA
	Improved Messages

 4.7 PXA

	More reliable PCMCIA and CF interface.
	Supports Hitachi Microdrive (CF form factor hard drive).
	Added support for "pxa" keyword in mtd command line.

 4.6 PXA 

        Improved initial register settings
	Fix problem where only 32M of DRAM was used even though 64M was present

 4.5 PXA 

	Improved PCMCIA initialization
	Backlight turned off during boot (AGX only)
	More complete initialization of GPIO registers
	Improved  static memory register settings
	Reverse use FFUART for debug port and default console (AGX only)
	Set CPU speed to 400Mhz for boot and wakeup
	Set voltage to 1.3 V for boot and wakeup
	Make quiet mode work for bootloader

 4.4 PXA - not released

	Support for BitsyX and AGX (PXA processors).
	Added check for buffer overflow for PCMCIA CIS tuple data

 4.3    Update to support new AGC CPLD version.
	Update to support for 3.3V PCMCIA cards (before always applied 5V).
	Support quiet_console= command line parameter for cmdline.txt files.
	Add new machine ids for AGC (285) and Bitsy+ (284).

 4.2    Update to fix longstanding problem with some FAT16 ATA cards that claim to be FAT12
        Update to removed size limitations on burning large flash partitions from ATA cards

 4.1    To allow 8bit and 16bit register settings (necessary for epson FB initialization).

 4.0	New version for all platforms

 2.3    AGC version

 2.2    GC+ version

 2.13
	Update to meet McKesson's requirements
	1. Checks PCMCIA, Compact Flash for zImage and ramdisk.gz before attempting
	   to boot.

 2.12
	Developed to McKesson's requirements

	1. Supports 3M or 8M ramdisk on-board flash partitions (compile switch)
	2. Checks switch 4 - turns off output.  Sends "console=ttySA0" as kernel
	   command line when 4 is off.  Sends "quiet console=tty2" when 4 is on.
	3. Turns off backlight (so screen doesn't look bad during boot process)
	4. Boots from PCMCIA, Compact Flash, or on-board flash switchs 1&3

 2.11
	1. for 64Mbyte DRAM 
	   *NOTE*
	   It works on 32MByte DRAM too.
	   We can use this ROM for both 32MByte DRAM and 64MByte DRAM

 2.10
	1. It checks DRAM Data & Address bus lines when bootup.
	2. It checks DRAM size.
	3. Fix OnBoard Flash Reset Problem
	   Reset button doesn't reset OnBoard Flash.
	   So, bootROM sets OnBoard Flash to READ ARRAY mode
	4. Fix Compact Flash Slot Problem
	   If there is card on CF slot, GMaster may hang or do undefined instruction.
	5. Set GPIO 15, 17 & 19 (RTS lines for SA1110 UART 1, 2, & 3) to High
	6. Use LEDs
	   During erasing or writing to OnBoard Flash, Amber LED lights on.
	   Otherwise, Green and Red LEDs are on.
	7. Fix setting Mac address through menu on bootROM.
	8. Delete unimplemented menus.

  2.00 
	1. First release of GMaster bootROM