61 lines
1.8 KiB
C
61 lines
1.8 KiB
C
/*
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* (C) Copyright 2004, Psyent Corporation <www.psyent.com>
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* Scott McNutt <smcnutt@psyent.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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/*************************************************************************
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* Altera Nios-II EPCS Controller Core interfaces
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************************************************************************/
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#ifndef __NIOS2_EPCS_H__
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#define __NIOS2_EPCS_H__
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typedef struct epcs_devinfo_t {
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const char *name; /* Device name */
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unsigned char id; /* Device silicon id */
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unsigned char size; /* Total size log2(bytes)*/
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unsigned char num_sects; /* Number of sectors */
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unsigned char sz_sect; /* Sector size log2(bytes) */
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unsigned char sz_page; /* Page size log2(bytes) */
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unsigned char prot_mask; /* Protection mask */
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}epcs_devinfo_t;
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/* Resets the epcs controller -- to prevent (potential) soft-reset
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* problems when booting from the epcs controller
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*/
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extern int epcs_reset (void);
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/* Returns the devinfo struct if EPCS device is found;
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* NULL otherwise.
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*/
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extern epcs_devinfo_t *epcs_dev_find (void);
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/* Returns the number of bytes used by config data.
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* Negative on error.
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*/
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extern int epcs_cfgsz (void);
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/* Erase sectors 'start' to 'end' - return zero on success
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*/
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extern int epcs_erase (unsigned start, unsigned end);
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/* Read 'cnt' bytes from device offset 'off' into buf at 'addr'
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* Zero return on success
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*/
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extern int epcs_read (ulong addr, ulong off, ulong cnt);
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/* Write 'cnt' bytes to device offset 'off' from buf at 'addr'.
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* Zero return on success
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*/
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extern int epcs_write (ulong addr, ulong off, ulong cnt);
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/* Verify 'cnt' bytes at device offset 'off' comparing with buf
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* at 'addr'. On failure, write first invalid offset to *err.
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* Zero return on success
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*/
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extern int epcs_verify (ulong addr, ulong off, ulong cnt, ulong *err);
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#endif /* __NIOS2_EPCS_H__ */
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