1 /* Handle cache related addresses. 2 3 Copyright (C) 1996-2019 Free Software Foundation, Inc. 4 Contributed by Cygnus Solutions and Mike Frysinger. 5 6 This file is part of the GNU simulators. 7 8 This program is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 3 of the License, or 11 (at your option) any later version. 12 13 This program is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 20 21 #include "config.h" 22 23 #include "sim-main.h" 24 #include "hw-main.h" 25 26 #include "dv-m32r_cache.h" 27 28 struct m32r_cache_hw 29 { 30 }; 31 32 static unsigned 33 cris_io_write_buffer (struct hw *me, const void *source, 34 int space, address_word addr, unsigned nr_bytes) 35 { 36 SIM_DESC sd = hw_system (me); 37 38 #if WITH_SCACHE 39 /* MSPR support is deprecated but is kept in for upward compatibility 40 with existing overlay support. */ 41 switch (addr) 42 { 43 case MSPR_ADDR: 44 if ((*(const char *) source & MSPR_PURGE) != 0) 45 scache_flush (sd); 46 break; 47 48 case MCCR_ADDR: 49 if ((*(const char *) source & MCCR_CP) != 0) 50 scache_flush (sd); 51 break; 52 } 53 #endif 54 55 return nr_bytes; 56 } 57 58 static void 59 attach_regs (struct hw *me, struct m32r_cache_hw *hw) 60 { 61 address_word attach_address; 62 int attach_space; 63 unsigned attach_size; 64 reg_property_spec reg; 65 66 if (hw_find_property (me, "reg") == NULL) 67 hw_abort (me, "Missing \"reg\" property"); 68 69 if (!hw_find_reg_array_property (me, "reg", 0, ®)) 70 hw_abort (me, "\"reg\" property must contain three addr/size entries"); 71 72 hw_unit_address_to_attach_address (hw_parent (me), 73 ®.address, 74 &attach_space, &attach_address, me); 75 hw_unit_size_to_attach_size (hw_parent (me), ®.size, &attach_size, me); 76 77 hw_attach_address (hw_parent (me), 78 0, attach_space, attach_address, attach_size, me); 79 } 80 81 static void 82 m32r_cache_finish (struct hw *me) 83 { 84 struct m32r_cache_hw *hw; 85 86 hw = HW_ZALLOC (me, struct m32r_cache_hw); 87 set_hw_data (me, hw); 88 set_hw_io_write_buffer (me, cris_io_write_buffer); 89 90 attach_regs (me, hw); 91 } 92 93 const struct hw_descriptor dv_m32r_cache_descriptor[] = { 94 { "m32r_cache", m32r_cache_finish, }, 95 { NULL }, 96 }; 97