| /* |
| * (C) Copyright 2004, Psyent Corporation <www.psyent.com> |
| * Scott McNutt <smcnutt@psyent.com> |
| * |
| * SPDX-License-Identifier: GPL-2.0+ |
| */ |
| |
| /************************************************************************* |
| * 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__ */ |