* Patch by Scott McNutt, 04 Oct 2003:
- add support for Altera Nios-32 CPU
- add support for Nios Cyclone Development Kit (DK-1C20)
* Patch by Steven Scholz, 29 Sep 2003:
- A second parameter for bootm overwrites the load address for
"Standalone Application" images.
- bootm sets environment variable "filesize" to the resulting
(uncompressed) data length for "Standalone Application" images
when autostart is set to "no". Now you can do something like
if bootm $fpgadata $some_free_ram ; then
fpga load 0 $some_free_ram $filesize
fi
* Patch by Denis Peter, 25 Sept 2003:
add support for the MIP405 Rev. C board
diff --git a/board/dk1c20/vectors.S b/board/dk1c20/vectors.S
new file mode 100644
index 0000000..e2baaf5
--- /dev/null
+++ b/board/dk1c20/vectors.S
@@ -0,0 +1,124 @@
+/*
+ * (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 */
+
+