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+/*
+ * (C) Copyright 2004, 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-II EPCS Controller Core interfaces
+ ************************************************************************/
+
+#ifndef __NIOS2_EPCS_H__
+#define __NIOS2_EPCS_H__
+
+typedef struct epcs_devinfo_t {
+ const char *name; /* Device name */
+ unsigned char id; /* Device silicon id */
+ unsigned char size; /* Total size log2(bytes)*/
+ unsigned char num_sects; /* Number of sectors */
+ unsigned char sz_sect; /* Sector size log2(bytes) */
+ unsigned char sz_page; /* Page size log2(bytes) */
+ unsigned char prot_mask; /* Protection mask */
+}epcs_devinfo_t;
+
+/* Returns the devinfo struct if EPCS device is found;
+ * NULL otherwise.
+ */
+extern epcs_devinfo_t *epcs_dev_find (void);
+
+/* Returns the number of bytes used by config data.
+ * Negative on error.
+ */
+extern int epcs_cfgsz (void);
+
+/* Erase sectors 'start' to 'end' - return zero on success
+ */
+extern int epcs_erase (unsigned start, unsigned end);
+
+/* Read 'cnt' bytes from device offset 'off' into buf at 'addr'
+ * Zero return on success
+ */
+extern int epcs_read (ulong addr, ulong off, ulong cnt);
+
+/* Write 'cnt' bytes to device offset 'off' from buf at 'addr'.
+ * Zero return on success
+ */
+extern int epcs_write (ulong addr, ulong off, ulong cnt);
+
+/* Verify 'cnt' bytes at device offset 'off' comparing with buf
+ * at 'addr'. On failure, write first invalid offset to *err.
+ * Zero return on success
+ */
+extern int epcs_verify (ulong addr, ulong off, ulong cnt, ulong *err);
+
+#endif /* __NIOS2_EPCS_H__ */