releasenotes.txt

vxworks的BSP开发配置文件

IXP1200EB Release Notes

1. The default config.h file contains a definition:
   #define INCLUDE_EXTRA_PCI_MAPPING
   This will map additional pages at the start of the PCI Memory
   address range. This is so that user code can see optional cards
   installed in this range (user code can not add addition pages after
   the OS boots). If this feature is not needed, then all this
   defintion does is waste some SDRAM space for the additional page
   table entries. If one is not using this feature and does not want
   to waste the space, then this definition should be removed.

2. The new version supports automatic configuration of PCI space
   if the board is configured as "Central Function". In this case, all
   of the other boards in the system will be automatically configured
   and will be visible in the 1200's memory space. However, if the 
   board is not the central function, then syslib.c will need to be modified
   to make other boards visible. Look for the symbol 
   "INCLUDE_EXTRA_PCI_MAPPING" for an example of how to do this.

   The function "pciAddrShow" can be used to show the current PCI addresses.

3. If an Intel 82559-based Ethernet card is installed, the boot device
   should be specified as "eeE0" rather than "dc0". This string *is*
   case sensitive.

4. If you have an older card that does not have a new flash image and
   you want to upgrade to an Intel 82559-based, the following procedure
   should be used:
   1. Boot any vxWorks image using a 2114x-based Ethernet card. This
      is needed because the old flash image only supports these ethernet
      cards.
   2. Use the "updateFlash" command to put a new (82559-compatible) image
      (boot1200.bin) into the flash.
   3. It is now safe to replace the ethernet card with an 82559-based one.
      Note that you must change the boot device as described above, and
      the vxWorks image that is loaded must also be a new one.

4. The earliest version that supports the Intel 82559 is version 1.0/947,
   built on Jan 6, 2000.

5. The current version of the software expects to find both an Intel 82559
   and a DEC 2114x-based card. This is so that the same software will
   work with either card. The downside to this is that if the DEC card
   is not present, several error messages appear on the serial port
   during boot. These can be safely ignored. If these are
   objectionable, the software can be recompiled with either driver
   disabled. If only one driver is enabled and only that card is
   present, then there will be no error messages.