xref: /openbmc/qemu/include/hw/nvram/eeprom93xx.h (revision 2993683b)
1 /*
2  * QEMU EEPROM 93xx emulation
3  *
4  * Copyright (c) 2006-2007 Stefan Weil
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, see <http://www.gnu.org/licenses/>.
18  */
19 
20 #ifndef EEPROM93XX_H
21 #define EEPROM93XX_H
22 
23 typedef struct _eeprom_t eeprom_t;
24 
25 /* Create a new EEPROM with (nwords * 2) bytes. */
26 eeprom_t *eeprom93xx_new(DeviceState *dev, uint16_t nwords);
27 
28 /* Destroy an existing EEPROM. */
29 void eeprom93xx_free(DeviceState *dev, eeprom_t *eeprom);
30 
31 /* Read from the EEPROM. */
32 uint16_t eeprom93xx_read(eeprom_t *eeprom);
33 
34 /* Write to the EEPROM. */
35 void eeprom93xx_write(eeprom_t *eeprom, int eecs, int eesk, int eedi);
36 
37 /* Get EEPROM data array. */
38 uint16_t *eeprom93xx_data(eeprom_t *eeprom);
39 
40 #endif /* EEPROM93XX_H */
41