* 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/include/nios-io.h b/include/nios-io.h
new file mode 100644
index 0000000..9fec644
--- /dev/null
+++ b/include/nios-io.h
@@ -0,0 +1,96 @@
+/*
+ * (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
+ */
+
+/*************************************************************************
+ * Altera Nios Standard Peripherals
+ ************************************************************************/
+
+#ifndef __NIOSIO_H__
+#define __NIOSIO_H__
+
+/*------------------------------------------------------------------------
+ * UART
+ *----------------------------------------------------------------------*/
+typedef volatile struct nios_uart_t {
+ unsigned rxdata; /* Rx data reg */
+ unsigned txdata; /* Tx data reg */
+ unsigned status; /* Status reg */
+ unsigned control; /* Control reg */
+ unsigned divisor; /* Baud rate divisor reg */
+ unsigned endofpacket; /* End-of-packet reg */
+}nios_uart_t;
+
+/* status register */
+#define NIOS_UART_PE (1 << 0) /* parity error */
+#define NIOS_UART_FE (1 << 1) /* frame error */
+#define NIOS_UART_BRK (1 << 2) /* break detect */
+#define NIOS_UART_ROE (1 << 3) /* rx overrun */
+#define NIOS_UART_TOE (1 << 4) /* tx overrun */
+#define NIOS_UART_TMT (1 << 5) /* tx empty */
+#define NIOS_UART_TRDY (1 << 6) /* tx ready */
+#define NIOS_UART_RRDY (1 << 7) /* rx ready */
+#define NIOS_UART_E (1 << 8) /* exception */
+#define NIOS_UART_DCTS (1 << 10) /* cts change */
+#define NIOS_UART_CTS (1 << 11) /* cts */
+#define NIOS_UART_EOP (1 << 12) /* eop detected */
+
+/* control register */
+#define NIOS_UART_IPE (1 << 0) /* parity error int ena*/
+#define NIOS_UART_IFE (1 << 1) /* frame error int ena */
+#define NIOS_UART_IBRK (1 << 2) /* break detect int ena */
+#define NIOS_UART_IROE (1 << 3) /* rx overrun int ena */
+#define NIOS_UART_ITOE (1 << 4) /* tx overrun int ena */
+#define NIOS_UART_ITMT (1 << 5) /* tx empty int ena */
+#define NIOS_UART_ITRDY (1 << 6) /* tx ready int ena */
+#define NIOS_UART_IRRDY (1 << 7) /* rx ready int ena */
+#define NIOS_UART_IE (1 << 8) /* exception int ena */
+#define NIOS_UART_TBRK (1 << 9) /* transmit break */
+#define NIOS_UART_IDCTS (1 << 10) /* cts change int ena */
+#define NIOS_UART_RTS (1 << 11) /* rts */
+#define NIOS_UART_IEOP (1 << 12) /* eop detected int ena */
+
+
+/*------------------------------------------------------------------------
+ * TIMER
+ *----------------------------------------------------------------------*/
+typedef volatile struct nios_timer_t {
+ unsigned status; /* Timer status reg */
+ unsigned control; /* Timer control reg */
+ unsigned periodl; /* Timeout period low */
+ unsigned periodh; /* Timeout period high */
+ unsigned snapl; /* Snapshot low */
+ unsigned snaph; /* Snapshot high */
+}nios_timer_t;
+
+/* status register */
+#define NIOS_TIMER_TO (1 << 0) /* Timeout */
+#define NIOS_TIMER_RUN (1 << 1) /* Timer running */
+
+/* control register */
+#define NIOS_TIMER_ITO (1 << 0) /* Timeout int ena */
+#define NIOS_TIMER_CONT (1 << 1) /* Continuous mode */
+#define NIOS_TIMER_START (1 << 2) /* Start timer */
+#define NIOS_TIMER_STOP (1 << 3) /* Stop timer */
+
+#endif /* __NIOSIO_H__ */
+