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9c0c156b MF |
1 | /* Handle cache related addresses. |
2 | ||
42a4f53d | 3 | Copyright (C) 1996-2019 Free Software Foundation, Inc. |
9c0c156b MF |
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 | }; |