LXR uboot/include/nios2-epcs.h

   1/*
   2 * (C) Copyright 2004, Psyent Corporation <www.psyent.com>
   3 * Scott McNutt <smcnutt@psyent.com>
   4 *
   5 * See file CREDITS for list of people who contributed to this
   6 * project.
   7 *
   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.
  12 *
  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.
  17 *
  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,
  21 * MA 02111-1307 USA
  22 */
  23
  24/*************************************************************************
  25 * Altera Nios-II EPCS Controller Core interfaces
  26 ************************************************************************/
  27
  28#ifndef __NIOS2_EPCS_H__
  29#define __NIOS2_EPCS_H__
  30
  31typedef 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 */
  39}epcs_devinfo_t;
  40
  41/* Resets the epcs controller -- to prevent (potential) soft-reset
  42 * problems when booting from the epcs controller
  43 */
  44extern int epcs_reset (void);
  45
  46/* Returns the devinfo struct if EPCS device is found;
  47 * NULL otherwise.
  48 */
  49extern epcs_devinfo_t *epcs_dev_find (void);
  50
  51/* Returns the number of bytes used by config data.
  52 * Negative on error.
  53 */
  54extern int epcs_cfgsz (void);
  55
  56/* Erase sectors 'start' to 'end' - return zero on success
  57 */
  58extern int epcs_erase (unsigned start, unsigned end);
  59
  60/* Read 'cnt' bytes from device offset 'off' into buf at 'addr'
  61 * Zero return on success
  62 */
  63extern int epcs_read (ulong addr, ulong off, ulong cnt);
  64
  65/* Write 'cnt' bytes to device offset 'off' from buf at 'addr'.
  66 * Zero return on success
  67 */
  68extern int epcs_write (ulong addr, ulong off, ulong cnt);
  69
  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
  73 */
  74extern int epcs_verify (ulong addr, ulong off, ulong cnt, ulong *err);
  75
  76#endif /* __NIOS2_EPCS_H__ */
  77