xref: /openbmc/qemu/include/hw/nvram/mac_nvram.h (revision 1f7888e2)
1 /*
2  * PowerMac NVRAM emulation
3  *
4  * Copyright (c) 2004-2007 Fabrice Bellard
5  * Copyright (c) 2007 Jocelyn Mayer
6  *
7  * Permission is hereby granted, free of charge, to any person obtaining a copy
8  * of this software and associated documentation files (the "Software"), to deal
9  * in the Software without restriction, including without limitation the rights
10  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11  * copies of the Software, and to permit persons to whom the Software is
12  * furnished to do so, subject to the following conditions:
13  *
14  * The above copyright notice and this permission notice shall be included in
15  * all copies or substantial portions of the Software.
16  *
17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
23  * THE SOFTWARE.
24  */
25 
26 #ifndef MAC_NVRAM_H
27 #define MAC_NVRAM_H
28 
29 #include "exec/memory.h"
30 #include "hw/sysbus.h"
31 
32 #define MACIO_NVRAM_SIZE 0x2000
33 
34 #define TYPE_MACIO_NVRAM "macio-nvram"
35 OBJECT_DECLARE_SIMPLE_TYPE(MacIONVRAMState, MACIO_NVRAM)
36 
37 struct MacIONVRAMState {
38     /*< private >*/
39     SysBusDevice parent_obj;
40     /*< public >*/
41 
42     uint32_t size;
43     uint32_t it_shift;
44 
45     MemoryRegion mem;
46     uint8_t *data;
47     BlockBackend *blk;
48 };
49 
50 void pmac_format_nvram_partition(MacIONVRAMState *nvr, int len);
51 
52 #endif /* MAC_NVRAM_H */
53