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unneback |
The FADS MPC860 board port for eCos was contributed by Kevin Hester
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and is partly based on the files from Motorola's
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"Example Software Initializing the SMC as a UART" package (smc2.zip)
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available at:
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http://www.mot.com/SPS/RISC/netcomm/tools/index.html#MPC860_table
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The eCos FADS board port is provided on an "as is" basis as unsupported code.
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Red Hat does not maintain this code and does not guarantee its functionality
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in any way.
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All inquiries about this port should be directed to the 'ecos-discuss'
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mailing list (see http://sourceware.cygnus.com/ecos/intouch.html for
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details).
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A few comments from Kevin:
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----------------------------------------------------------------------------
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GDB support is untested and I didn't include the GDB 'interrupt' via
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the serial port support. It would be straightforward for someone to
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add this.
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You can also pass on that is was very easy to write this HAL - it only
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took a day starting from the Cogent PPC HAL.
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I can't promise support, but I will occasionally download from the CVS
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database and run it on our card.
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Usage notes:
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- The startup code in fads.S assumes that the build has been downloaded by
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the mpc8bug tool included with the FADS board. An example usage would be:
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- build a FADS build (RAM build, GDB support off)
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- link your application with the kernel you previously built
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- run the Motorola mpc8bug tool.
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- issue a mcp8bug "LOAD foo.elf" command where foo is the application you
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have linked
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- issue a mpc8bug "GO" command
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- your program should now be running, the diag port is the upper serial
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port (SMC2)
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- I haven't tried to run a "ROM" build. The "RAM" build works great. The
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ROM build will need to have fads.S setup more of the memory controller.
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- I haven't tested the GDB interface - I have successfully run using the
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diag serial port and the example programs (such as "hello world"). GDB
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support should work, with the exception of interrupt support.
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- The basic serial driver I added is based on the free Motorolla sample code
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included with the MPC860 board. It assumes the link to the development
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station is via the SMC 2 port (the top serial port on the FADS board). This
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code in quicc_smc.c should be generalized to support any SMC port.
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----------------------------------------------------------------------------
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//===========================================================================
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//####ECOSGPLCOPYRIGHTBEGIN####
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// -------------------------------------------
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// This file is part of eCos, the Embedded Configurable Operating System.
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// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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//
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// eCos is free software; you can redistribute it and/or modify it under
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// the terms of the GNU General Public License as published by the Free
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// Software Foundation; either version 2 or (at your option) any later version.
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//
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// eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// for more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with eCos; if not, write to the Free Software Foundation, Inc.,
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// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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//
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// As a special exception, if other files instantiate templates or use macros
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// or inline functions from this file, or you compile this file and link it
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// with other works to produce a work based on this file, this file does not
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// by itself cause the resulting work to be covered by the GNU General Public
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// License. However the source code for this file must still be made available
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// in accordance with section (3) of the GNU General Public License.
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//
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// This exception does not invalidate any other reasons why a work based on
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// this file might be covered by the GNU General Public License.
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//
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// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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// at http://sources.redhat.com/ecos/ecos-license/
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// -------------------------------------------
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//####ECOSGPLCOPYRIGHTEND####
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//===========================================================================
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