/* * (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; /* Resets the epcs controller -- to prevent (potential) soft-reset * problems when booting from the epcs controller */ extern int epcs_reset (void); /* 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__ */