qemu/include/hw/nvram/mac_nvram.h
BALATON Zoltan 1f7888e225 mac_nvram: Add block backend to persist NVRAM contents
Add a way to set a backing store for the mac_nvram similar to what
spapr_nvram or mac_via PRAM already does to allow to save its contents
between runs.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <4b1605a9e484cc95f6e141f297487a070fd418ac.1675297286.git.balaton@eik.bme.hu>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
2023-02-06 11:41:39 +00:00

53 lines
1.7 KiB
C

/*
* PowerMac NVRAM emulation
*
* Copyright (c) 2004-2007 Fabrice Bellard
* Copyright (c) 2007 Jocelyn Mayer
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef MAC_NVRAM_H
#define MAC_NVRAM_H
#include "exec/memory.h"
#include "hw/sysbus.h"
#define MACIO_NVRAM_SIZE 0x2000
#define TYPE_MACIO_NVRAM "macio-nvram"
OBJECT_DECLARE_SIMPLE_TYPE(MacIONVRAMState, MACIO_NVRAM)
struct MacIONVRAMState {
/*< private >*/
SysBusDevice parent_obj;
/*< public >*/
uint32_t size;
uint32_t it_shift;
MemoryRegion mem;
uint8_t *data;
BlockBackend *blk;
};
void pmac_format_nvram_partition(MacIONVRAMState *nvr, int len);
#endif /* MAC_NVRAM_H */