1 /* Handle cache related addresses. 2 3 Copyright (C) 1996-2024 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 /* This must come before any other includes. */ 22 #include "defs.h" 23 24 #include "sim-main.h" 25 #include "hw-main.h" 26 27 #include "dv-m32r_cache.h" 28 29 struct m32r_cache_hw 30 { 31 }; 32 33 static unsigned 34 cris_io_write_buffer (struct hw *me, const void *source, 35 int space, address_word addr, unsigned nr_bytes) 36 { 37 SIM_DESC sd = hw_system (me); 38 39 #if WITH_SCACHE 40 /* MSPR support is deprecated but is kept in for upward compatibility 41 with existing overlay support. */ 42 switch (addr) 43 { 44 case MSPR_ADDR: 45 if ((*(const char *) source & MSPR_PURGE) != 0) 46 scache_flush (sd); 47 break; 48 49 case MCCR_ADDR: 50 if ((*(const char *) source & MCCR_CP) != 0) 51 scache_flush (sd); 52 break; 53 } 54 #endif 55 56 return nr_bytes; 57 } 58 59 static void 60 attach_regs (struct hw *me, struct m32r_cache_hw *hw) 61 { 62 address_word attach_address; 63 int attach_space; 64 unsigned attach_size; 65 reg_property_spec reg; 66 67 if (hw_find_property (me, "reg") == NULL) 68 hw_abort (me, "Missing \"reg\" property"); 69 70 if (!hw_find_reg_array_property (me, "reg", 0, ®)) 71 hw_abort (me, "\"reg\" property must contain three addr/size entries"); 72 73 hw_unit_address_to_attach_address (hw_parent (me), 74 ®.address, 75 &attach_space, &attach_address, me); 76 hw_unit_size_to_attach_size (hw_parent (me), ®.size, &attach_size, me); 77 78 hw_attach_address (hw_parent (me), 79 0, attach_space, attach_address, attach_size, me); 80 } 81 82 static void 83 m32r_cache_finish (struct hw *me) 84 { 85 struct m32r_cache_hw *hw; 86 87 hw = HW_ZALLOC (me, struct m32r_cache_hw); 88 set_hw_data (me, hw); 89 set_hw_io_write_buffer (me, cris_io_write_buffer); 90 91 attach_regs (me, hw); 92 } 93 94 const struct hw_descriptor dv_m32r_cache_descriptor[] = { 95 { "m32r_cache", m32r_cache_finish, }, 96 { NULL }, 97 }; 98