2 * (C) Copyright 2004, Psyent Corporation <www.psyent.com>
3 * Scott McNutt <smcnutt@psyent.com>
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
24 /*************************************************************************
25 * Altera Nios-II EPCS Controller Core interfaces
26 ************************************************************************/
28 #ifndef __NIOS2_EPCS_H__
29 #define __NIOS2_EPCS_H__
31 typedef struct epcs_devinfo_t {
32 const char *name; /* Device name */
33 unsigned char id; /* Device silicon id */
34 unsigned char size; /* Total size log2(bytes)*/
35 unsigned char num_sects; /* Number of sectors */
36 unsigned char sz_sect; /* Sector size log2(bytes) */
37 unsigned char sz_page; /* Page size log2(bytes) */
38 unsigned char prot_mask; /* Protection mask */
41 /* Resets the epcs controller -- to prevent (potential) soft-reset
42 * problems when booting from the epcs controller
44 extern int epcs_reset (void);
46 /* Returns the devinfo struct if EPCS device is found;
49 extern epcs_devinfo_t *epcs_dev_find (void);
51 /* Returns the number of bytes used by config data.
54 extern int epcs_cfgsz (void);
56 /* Erase sectors 'start' to 'end' - return zero on success
58 extern int epcs_erase (unsigned start, unsigned end);
60 /* Read 'cnt' bytes from device offset 'off' into buf at 'addr'
61 * Zero return on success
63 extern int epcs_read (ulong addr, ulong off, ulong cnt);
65 /* Write 'cnt' bytes to device offset 'off' from buf at 'addr'.
66 * Zero return on success
68 extern int epcs_write (ulong addr, ulong off, ulong cnt);
70 /* Verify 'cnt' bytes at device offset 'off' comparing with buf
71 * at 'addr'. On failure, write first invalid offset to *err.
72 * Zero return on success
74 extern int epcs_verify (ulong addr, ulong off, ulong cnt, ulong *err);
76 #endif /* __NIOS2_EPCS_H__ */