1 /* 2 * QEMU M48T59 and M48T08 NVRAM emulation 3 * 4 * Copyright (c) 2003-2005, 2007 Jocelyn Mayer 5 * Copyright (c) 2013 Hervé Poussineau 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 HW_RTC_M48T59_H 27 #define HW_RTC_M48T59_H 28 29 #include "exec/hwaddr.h" 30 #include "qom/object.h" 31 32 #define TYPE_NVRAM "nvram" 33 34 typedef struct NvramClass NvramClass; 35 #define NVRAM_CLASS(klass) \ 36 OBJECT_CLASS_CHECK(NvramClass, (klass), TYPE_NVRAM) 37 #define NVRAM_GET_CLASS(obj) \ 38 OBJECT_GET_CLASS(NvramClass, (obj), TYPE_NVRAM) 39 #define NVRAM(obj) \ 40 INTERFACE_CHECK(Nvram, (obj), TYPE_NVRAM) 41 42 typedef struct Nvram Nvram; 43 44 struct NvramClass { 45 InterfaceClass parent; 46 47 uint32_t (*read)(Nvram *obj, uint32_t addr); 48 void (*write)(Nvram *obj, uint32_t addr, uint32_t val); 49 void (*toggle_lock)(Nvram *obj, int lock); 50 }; 51 52 Nvram *m48t59_init_isa(ISABus *bus, uint32_t io_base, uint16_t size, 53 int base_year, int type); 54 Nvram *m48t59_init(qemu_irq IRQ, hwaddr mem_base, 55 uint32_t io_base, uint16_t size, int base_year, 56 int type); 57 58 #endif /* HW_M48T59_H */ 59