1 /* 2 * QEMU model of the Xilinx BBRAM Battery Backed RAM 3 * 4 * Copyright (c) 2015-2021 Xilinx Inc. 5 * 6 * Written by Edgar E. Iglesias <edgari@xilinx.com> 7 * 8 * Permission is hereby granted, free of charge, to any person obtaining a copy 9 * of this software and associated documentation files (the "Software"), to deal 10 * in the Software without restriction, including without limitation the rights 11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 12 * copies of the Software, and to permit persons to whom the Software is 13 * furnished to do so, subject to the following conditions: 14 * 15 * The above copyright notice and this permission notice shall be included in 16 * all copies or substantial portions of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 21 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 24 * THE SOFTWARE. 25 */ 26 #ifndef XLNX_BBRAM_H 27 #define XLNX_BBRAM_H 28 29 #include "sysemu/block-backend.h" 30 #include "hw/qdev-core.h" 31 #include "hw/irq.h" 32 #include "hw/sysbus.h" 33 #include "hw/register.h" 34 35 #define RMAX_XLNX_BBRAM ((0x4c / 4) + 1) 36 37 #define TYPE_XLNX_BBRAM "xlnx,bbram-ctrl" 38 OBJECT_DECLARE_SIMPLE_TYPE(XlnxBBRam, XLNX_BBRAM); 39 40 struct XlnxBBRam { 41 SysBusDevice parent_obj; 42 qemu_irq irq_bbram; 43 44 BlockBackend *blk; 45 46 uint32_t crc_zpads; 47 bool bbram8_wo; 48 bool blk_ro; 49 50 uint32_t regs[RMAX_XLNX_BBRAM]; 51 RegisterInfo regs_info[RMAX_XLNX_BBRAM]; 52 }; 53 54 #endif 55