Patches by Stephan Linz, 11 Dec 2003:

- more documentation for NIOS port
- new struct nios_pio_t, struct nios_spi_t
- Reconfiguration for NIOS Development Kit DK1C20:
  o move board related code from board/dk1c20
    to board/altera/dk1c20
  o create a new common source path board/altera/common
    and move generic flash access stuff into it
  o change/expand configuration file DK1C20.h
- Add support for NIOS Development Kit DK1S10
- Add status LED support for NIOS systems
- Add dual 7-segment LED support for Altera NIOS DevKits

1 files changed, 122 insertions, 0 deletions

diff --git a/board/altera/dk1c20/vectors.S b/board/altera/dk1c20/vectors.S
new file mode 100644
index 0000000..7094eb6
--- /dev/null
+++ b/board/altera/dk1c20/vectors.S
@@ -0,0 +1,122 @@
+/*
+ * (C) Copyright 2003, Psyent Corporation <www.psyent.com>
+ * Scott McNutt <smcnutt@psyent.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+
+/*************************************************************************
+ * Exception Vector Table
+ *
+ * This could have gone in the cpu soure tree, but the whole point of
+ * Nios is customization -- and polluting the cpu source tree with
+ * board-specific ifdef's really defeats the purpose, no? With this in
+ * the board-specific tree, each board has the freedom to organize
+ * vectors/traps, etc anyway it wants. The init code copies this table
+ * to the proper location.
+ *
+ * Each board can do what it likes here. But there are four "standard"
+ * handlers availble:
+ *
+ *	_cwp_lolimit	-Handles register window underflows.
+ *	_cwp_hilimit	-Handles register window overflows.
+ *	_timebase_int	-Increments the timebase.
+ *	_def_xhandler	-Default exception handler.
+ *
+ * _timebase_int handles a Nios Timer interrupt and increments the
+ * timestamp used for the get_timer(), reset_timer(), etc. routines. It
+ * expects the timer to be configured like the standard-32 low priority
+ * timer.
+ *
+ * _def_xhandler dispatches exceptions/traps via the external_interrupt()
+ * routine. This lets you use the irq_install_handler() and handle your
+ * interrupts/traps with code written in C.
+ ************************************************************************/
+
+	.data
+	.global _vectors
+	.align	4
+_vectors:
+
+	.long	_def_xhandler@h		/* Vector 0  - NMI */
+	.long	_cwp_lolimit@h		/* Vector 1  -  underflow */
+	.long	_cwp_hilimit@h		/* Vector 2  - overflow	*/
+
+	.long	_def_xhandler@h		/* Vector 3 - GNUPro debug */
+	.long	_def_xhandler@h		/* Vector 4 - GNUPro debug */
+	.long	_def_xhandler@h		/* Vector 5 - GNUPro debug */
+	.long	_def_xhandler@h		/* Vector 6 - future reserved */
+	.long	_def_xhandler@h		/* Vector 7 - future reserved */
+	.long	_def_xhandler@h		/* Vector 8 - future reserved */
+	.long	_def_xhandler@h		/* Vector 9 - future reserved */
+	.long	_def_xhandler@h		/* Vector 10 - future reserved */
+	.long	_def_xhandler@h		/* Vector 11 - future reserved */
+	.long	_def_xhandler@h		/* Vector 12 - future reserved */
+	.long	_def_xhandler@h		/* Vector 13 - future reserved */
+	.long	_def_xhandler@h		/* Vector 14 - future reserved */
+	.long	_def_xhandler@h		/* Vector 15 - future reserved */
+	.long	_def_xhandler@h		/* Vector 16 */
+	.long	_def_xhandler@h		/* Vector 17 */
+	.long	_def_xhandler@h		/* Vector 18 */
+	.long	_def_xhandler@h		/* Vector 19 */
+	.long	_def_xhandler@h		/* Vector 20 */
+	.long	_def_xhandler@h		/* Vector 21 */
+	.long	_def_xhandler@h		/* Vector 22 */
+	.long	_def_xhandler@h		/* Vector 23 */
+	.long	_def_xhandler@h		/* Vector 24 */
+	.long	_def_xhandler@h		/* Vector 25 */
+	.long	_def_xhandler@h		/* Vector 26 */
+	.long	_def_xhandler@h		/* Vector 27 */
+	.long	_def_xhandler@h		/* Vector 28 */
+	.long	_def_xhandler@h		/* Vector 29 */
+	.long	_def_xhandler@h		/* Vector 30 */
+	.long	_def_xhandler@h		/* Vector 31 */
+	.long	_def_xhandler@h		/* Vector 32 */
+	.long	_def_xhandler@h		/* Vector 33 */
+	.long	_def_xhandler@h		/* Vector 34 */
+	.long	_def_xhandler@h		/* Vector 35 */
+	.long	_def_xhandler@h		/* Vector 36 */
+	.long	_def_xhandler@h		/* Vector 37 */
+	.long	_def_xhandler@h		/* Vector 38 */
+	.long	_def_xhandler@h		/* Vector 39 */
+	.long	_def_xhandler@h		/* Vector 40 */
+	.long	_def_xhandler@h		/* Vector 41 */
+	.long	_def_xhandler@h		/* Vector 42 */
+	.long	_def_xhandler@h		/* Vector 43 */
+	.long	_def_xhandler@h		/* Vector 44 */
+	.long	_def_xhandler@h		/* Vector 45 */
+	.long	_def_xhandler@h		/* Vector 46 */
+	.long	_def_xhandler@h		/* Vector 47 */
+	.long	_def_xhandler@h		/* Vector 48 */
+	.long	_def_xhandler@h		/* Vector 49 */
+	.long	_timebase_int@h		/* Vector 50 - lopri timer*/
+	.long	_def_xhandler@h		/* Vector 51 */
+	.long	_def_xhandler@h		/* Vector 52 */
+	.long	_def_xhandler@h		/* Vector 53 */
+	.long	_def_xhandler@h		/* Vector 54 */
+	.long	_def_xhandler@h		/* Vector 55 */
+	.long	_def_xhandler@h		/* Vector 56 */
+	.long	_def_xhandler@h		/* Vector 57 */
+	.long	_def_xhandler@h		/* Vector 58 */
+	.long	_def_xhandler@h		/* Vector 59 */
+	.long	_def_xhandler@h		/* Vector 60 */
+	.long	_def_xhandler@h		/* Vector 61 */
+	.long	_def_xhandler@h		/* Vector 62 */
+	.long	_def_xhandler@h		/* Vector 63 */