| 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 "system/block-backend.h" |
| 30 | #include "hw/core/qdev.h" |
| 31 | #include "hw/core/irq.h" |
| 32 | #include "hw/core/sysbus.h" |
| 33 | #include "hw/core/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 |