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authorwdenk <wdenk>2004-01-03 19:43:48 +0000
committerwdenk <wdenk>2004-01-03 19:43:48 +0000
commitc935d3bd8b1c7f681ad58e64bd0548e1b26a7d2f (patch)
tree2529369b185098e6d38627b7500d7450d9bab8f5 /board/altera/dk1s10/vectors.S
parent3a473b2a6523db9cdf2b5aed22d9730b4ebc5693 (diff)
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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
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+/*
+ * (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 */