2 * MIPS emulation for qemu: CPU initialisation routines.
4 * Copyright (c) 2004-2005 Jocelyn Mayer
5 * Copyright (c) 2007 Herve Poussineau
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 /* CPU / CPU family specific config register values. */
24 /* Have config1, is MIPS32R1, uses TLB, no virtual icache,
26 #define MIPS_CONFIG0 \
27 ((1 << CP0C0_M) | (0x0 << CP0C0_K23) | (0x0 << CP0C0_KU) | \
28 (0x0 << CP0C0_AT) | (0x0 << CP0C0_AR) | (0x1 << CP0C0_MT) | \
31 /* Have config2, no coprocessor2 attached, no MDMX support attached,
32 no performance counters, watch registers present,
33 no code compression, EJTAG present, no FPU */
34 #define MIPS_CONFIG1 \
36 (0 << CP0C1_C2) | (0 << CP0C1_MD) | (0 << CP0C1_PC) | \
37 (1 << CP0C1_WR) | (0 << CP0C1_CA) | (1 << CP0C1_EP) | \
40 /* Have config3, no tertiary/secondary caches implemented */
41 #define MIPS_CONFIG2 \
44 /* No config4, no DSP ASE, no large physaddr,
45 no external interrupt controller, no vectored interupts,
46 no 1kb pages, no MT ASE, no SmartMIPS ASE, no trace logic */
47 #define MIPS_CONFIG3 \
48 ((0 << CP0C3_M) | (0 << CP0C3_DSPP) | (0 << CP0C3_LPA) | \
49 (0 << CP0C3_VEIC) | (0 << CP0C3_VInt) | (0 << CP0C3_SP) | \
50 (0 << CP0C3_MT) | (0 << CP0C3_SM) | (0 << CP0C3_TL))
52 /* Define a implementation number of 1.
53 Define a major version 1, minor version 0. */
54 #define MIPS_FCR0 ((0 << FCR0_S) | (0x1 << FCR0_PRID) | (0x10 << FCR0_REV))
58 const unsigned char *name;
68 int32_t Status_rw_bitmask;
73 /*****************************************************************************/
74 /* MIPS CPU definitions */
75 static mips_def_t mips_defs[] =
79 .CP0_PRid = 0x00018000,
80 .CP0_Config0 = MIPS_CONFIG0,
81 .CP0_Config1 = MIPS_CONFIG1 | (15 << CP0C1_MMU) |
82 (0 << CP0C1_IS) | (3 << CP0C1_IL) | (1 << CP0C1_IA) |
83 (0 << CP0C1_DS) | (3 << CP0C1_DL) | (1 << CP0C1_DA),
84 .CP0_Config2 = MIPS_CONFIG2,
85 .CP0_Config3 = MIPS_CONFIG3,
88 .Status_rw_bitmask = 0x3278FF17,
93 .CP0_PRid = 0x00018400,
94 .CP0_Config0 = MIPS_CONFIG0,
95 .CP0_Config1 = MIPS_CONFIG1 | (15 << CP0C1_MMU) |
96 (0 << CP0C1_IS) | (3 << CP0C1_IL) | (1 << CP0C1_IA) |
97 (0 << CP0C1_DS) | (3 << CP0C1_DL) | (1 << CP0C1_DA),
98 .CP0_Config2 = MIPS_CONFIG2,
99 .CP0_Config3 = MIPS_CONFIG3,
102 .Status_rw_bitmask = 0x3278FF17,
107 .CP0_PRid = 0x00019000,
108 .CP0_Config0 = MIPS_CONFIG0 | (0x1 << CP0C0_AR),
109 .CP0_Config1 = MIPS_CONFIG1 | (15 << CP0C1_MMU) |
110 (0 << CP0C1_IS) | (3 << CP0C1_IL) | (1 << CP0C1_IA) |
111 (0 << CP0C1_DS) | (3 << CP0C1_DL) | (1 << CP0C1_DA),
112 .CP0_Config2 = MIPS_CONFIG2,
113 .CP0_Config3 = MIPS_CONFIG3,
116 .Status_rw_bitmask = 0x3278FF17,
121 .CP0_PRid = 0x00019300,
122 .CP0_Config0 = MIPS_CONFIG0 | (0x1 << CP0C0_AR),
123 .CP0_Config1 = MIPS_CONFIG1 | (15 << CP0C1_MMU) |
124 (0 << CP0C1_IS) | (3 << CP0C1_IL) | (1 << CP0C1_IA) |
125 (0 << CP0C1_DS) | (3 << CP0C1_DL) | (1 << CP0C1_DA),
126 .CP0_Config2 = MIPS_CONFIG2,
127 .CP0_Config3 = MIPS_CONFIG3,
130 .Status_rw_bitmask = 0x3278FF17,
135 .CP0_PRid = 0x00019300,
136 .CP0_Config0 = MIPS_CONFIG0 | (0x1 << CP0C0_AR),
137 .CP0_Config1 = MIPS_CONFIG1 | (1 << CP0C1_FP) | (15 << CP0C1_MMU) |
138 (0 << CP0C1_IS) | (3 << CP0C1_IL) | (1 << CP0C1_IA) |
139 (0 << CP0C1_DS) | (3 << CP0C1_DL) | (1 << CP0C1_DA),
140 .CP0_Config2 = MIPS_CONFIG2,
141 .CP0_Config3 = MIPS_CONFIG3,
144 .Status_rw_bitmask = 0x3678FF17,
145 .CP1_fcr0 = (1 << FCR0_F64) | (1 << FCR0_L) | (1 << FCR0_W) |
146 (1 << FCR0_D) | (1 << FCR0_S) | (0x93 << FCR0_PRID),
152 .CP0_PRid = 0x00000400,
153 .CP0_Config0 = MIPS_CONFIG0 | (0x2 << CP0C0_AT),
154 .CP0_Config1 = MIPS_CONFIG1 | (1 << CP0C1_FP) | (47 << CP0C1_MMU) |
155 (0 << CP0C1_IS) | (3 << CP0C1_IL) | (1 << CP0C1_IA) |
156 (0 << CP0C1_DS) | (3 << CP0C1_DL) | (1 << CP0C1_DA),
157 .CP0_Config2 = MIPS_CONFIG2,
158 .CP0_Config3 = MIPS_CONFIG3,
161 .Status_rw_bitmask = 0x3678FFFF,
162 /* The R4000 has a full 64bit FPU doesn't use the fcr0 bits. */
163 .CP1_fcr0 = (0x5 << FCR0_PRID) | (0x0 << FCR0_REV),
168 .CP0_PRid = 0x00018100,
169 .CP0_Config0 = MIPS_CONFIG0 | (0x2 << CP0C0_AT),
170 .CP0_Config1 = MIPS_CONFIG1 | (31 << CP0C1_MMU) |
171 (1 << CP0C1_IS) | (4 << CP0C1_IL) | (1 << CP0C1_IA) |
172 (1 << CP0C1_DS) | (4 << CP0C1_DL) | (1 << CP0C1_DA) |
173 (1 << CP0C1_PC) | (1 << CP0C1_WR) | (1 << CP0C1_EP),
174 .CP0_Config2 = MIPS_CONFIG2,
175 .CP0_Config3 = MIPS_CONFIG3,
178 .Status_rw_bitmask = 0x32F8FFFF,
183 .CP0_PRid = 0x00018100,
184 .CP0_Config0 = MIPS_CONFIG0 | (0x2 << CP0C0_AT),
185 .CP0_Config1 = MIPS_CONFIG1 | (1 << CP0C1_FP) | (31 << CP0C1_MMU) |
186 (1 << CP0C1_IS) | (4 << CP0C1_IL) | (1 << CP0C1_IA) |
187 (1 << CP0C1_DS) | (4 << CP0C1_DL) | (1 << CP0C1_DA) |
188 (1 << CP0C1_PC) | (1 << CP0C1_WR) | (1 << CP0C1_EP),
189 .CP0_Config2 = MIPS_CONFIG2,
190 .CP0_Config3 = MIPS_CONFIG3,
193 .Status_rw_bitmask = 0x36F8FFFF,
194 /* The 5Kf has F64 / L / W but doesn't use the fcr0 bits. */
195 .CP1_fcr0 = (1 << FCR0_D) | (1 << FCR0_S) |
196 (0x81 << FCR0_PRID) | (0x0 << FCR0_REV),
201 /* We emulate a later version of the 20Kc, earlier ones had a broken
203 .CP0_PRid = 0x000182a0,
204 .CP0_Config0 = MIPS_CONFIG0 | (0x2 << CP0C0_AT) | (1 << CP0C0_VI),
205 .CP0_Config1 = MIPS_CONFIG1 | (1 << CP0C1_FP) | (47 << CP0C1_MMU) |
206 (2 << CP0C1_IS) | (4 << CP0C1_IL) | (3 << CP0C1_IA) |
207 (2 << CP0C1_DS) | (4 << CP0C1_DL) | (3 << CP0C1_DA) |
208 (1 << CP0C1_PC) | (1 << CP0C1_WR) | (1 << CP0C1_EP),
209 .CP0_Config2 = MIPS_CONFIG2,
210 .CP0_Config3 = MIPS_CONFIG3,
213 .Status_rw_bitmask = 0x36FBFFFF,
214 /* The 20Kc has F64 / L / W but doesn't use the fcr0 bits. */
215 .CP1_fcr0 = (1 << FCR0_3D) | (1 << FCR0_PS) |
216 (1 << FCR0_D) | (1 << FCR0_S) |
217 (0x82 << FCR0_PRID) | (0x0 << FCR0_REV),
223 int mips_find_by_name (const unsigned char *name, mips_def_t **def)
229 for (i = 0; i < sizeof(mips_defs) / sizeof(mips_defs[0]); i++) {
230 if (strcasecmp(name, mips_defs[i].name) == 0) {
231 *def = &mips_defs[i];
240 void mips_cpu_list (FILE *f, int (*cpu_fprintf)(FILE *f, const char *fmt, ...))
244 for (i = 0; i < sizeof(mips_defs) / sizeof(mips_defs[0]); i++) {
245 (*cpu_fprintf)(f, "MIPS '%s'\n",
250 #ifndef CONFIG_USER_ONLY
251 static void no_mmu_init (CPUMIPSState *env, mips_def_t *def)
254 env->map_address = &no_mmu_map_address;
257 static void fixed_mmu_init (CPUMIPSState *env, mips_def_t *def)
260 env->map_address = &fixed_mmu_map_address;
263 static void r4k_mmu_init (CPUMIPSState *env, mips_def_t *def)
265 env->nb_tlb = 1 + ((def->CP0_Config1 >> CP0C1_MMU) & 63);
266 env->map_address = &r4k_map_address;
267 env->do_tlbwi = r4k_do_tlbwi;
268 env->do_tlbwr = r4k_do_tlbwr;
269 env->do_tlbp = r4k_do_tlbp;
270 env->do_tlbr = r4k_do_tlbr;
272 #endif /* CONFIG_USER_ONLY */
274 int cpu_mips_register (CPUMIPSState *env, mips_def_t *def)
277 def = env->cpu_model;
279 cpu_abort(env, "Unable to find MIPS CPU definition\n");
280 env->cpu_model = def;
281 env->CP0_PRid = def->CP0_PRid;
282 env->CP0_Config0 = def->CP0_Config0;
283 #ifdef TARGET_WORDS_BIGENDIAN
284 env->CP0_Config0 |= (1 << CP0C0_BE);
286 env->CP0_Config1 = def->CP0_Config1;
287 env->CP0_Config2 = def->CP0_Config2;
288 env->CP0_Config3 = def->CP0_Config3;
289 env->CP0_Config6 = def->CP0_Config6;
290 env->CP0_Config7 = def->CP0_Config7;
291 env->SYNCI_Step = def->SYNCI_Step;
292 env->CCRes = def->CCRes;
293 env->Status_rw_bitmask = def->Status_rw_bitmask;
294 env->fcr0 = def->CP1_fcr0;
296 env->SEGBITS = def->SEGBITS;
297 env->SEGMask = (3ULL << 62) | ((1ULL << def->SEGBITS) - 1);
299 #ifdef CONFIG_USER_ONLY
300 if (env->CP0_Config1 & (1 << CP0C1_FP))
301 env->hflags |= MIPS_HFLAG_FPU;
302 if (env->fcr0 & (1 << FCR0_F64))
303 env->hflags |= MIPS_HFLAG_F64;
305 /* There are more full-featured MMU variants in older MIPS CPUs,
306 R3000, R6000 and R8000 come to mind. If we ever support them,
307 this check will need to look up a different place than those
308 newfangled config registers. */
309 switch ((env->CP0_Config0 >> CP0C0_MT) & 3) {
311 no_mmu_init(env, def);
314 r4k_mmu_init(env, def);
317 fixed_mmu_init(env, def);
320 cpu_abort(env, "MMU type not supported\n");
322 env->CP0_Random = env->nb_tlb - 1;
323 env->tlb_in_use = env->nb_tlb;
324 #endif /* CONFIG_USER_ONLY */