]>
Commit | Line | Data |
---|---|---|
b77f98ca AF |
1 | /* |
2 | * QEMU MicroBlaze CPU | |
3 | * | |
61b6208f AF |
4 | * Copyright (c) 2009 Edgar E. Iglesias |
5 | * Copyright (c) 2009-2012 PetaLogix Qld Pty Ltd. | |
b77f98ca | 6 | * Copyright (c) 2012 SUSE LINUX Products GmbH |
73c69456 | 7 | * Copyright (c) 2009 Edgar E. Iglesias, Axis Communications AB. |
b77f98ca AF |
8 | * |
9 | * This library is free software; you can redistribute it and/or | |
10 | * modify it under the terms of the GNU Lesser General Public | |
11 | * License as published by the Free Software Foundation; either | |
12 | * version 2.1 of the License, or (at your option) any later version. | |
13 | * | |
14 | * This library is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
17 | * Lesser General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU Lesser General Public | |
20 | * License along with this library; if not, see | |
21 | * <http://www.gnu.org/licenses/lgpl-2.1.html> | |
22 | */ | |
23 | ||
8fd9dece | 24 | #include "qemu/osdep.h" |
da34e65c | 25 | #include "qapi/error.h" |
b77f98ca | 26 | #include "cpu.h" |
0b8fa32f | 27 | #include "qemu/module.h" |
a1bff71c | 28 | #include "hw/qdev-properties.h" |
63c91552 | 29 | #include "exec/exec-all.h" |
5f8ab000 | 30 | #include "fpu/softfloat-helpers.h" |
b77f98ca | 31 | |
72e38754 AF |
32 | static const struct { |
33 | const char *name; | |
34 | uint8_t version_id; | |
35 | } mb_cpu_lookup[] = { | |
36 | /* These key value are as per MBV field in PVR0 */ | |
37 | {"5.00.a", 0x01}, | |
38 | {"5.00.b", 0x02}, | |
39 | {"5.00.c", 0x03}, | |
40 | {"6.00.a", 0x04}, | |
41 | {"6.00.b", 0x06}, | |
42 | {"7.00.a", 0x05}, | |
43 | {"7.00.b", 0x07}, | |
44 | {"7.10.a", 0x08}, | |
45 | {"7.10.b", 0x09}, | |
46 | {"7.10.c", 0x0a}, | |
47 | {"7.10.d", 0x0b}, | |
48 | {"7.20.a", 0x0c}, | |
49 | {"7.20.b", 0x0d}, | |
50 | {"7.20.c", 0x0e}, | |
51 | {"7.20.d", 0x0f}, | |
52 | {"7.30.a", 0x10}, | |
53 | {"7.30.b", 0x11}, | |
54 | {"8.00.a", 0x12}, | |
55 | {"8.00.b", 0x13}, | |
56 | {"8.10.a", 0x14}, | |
57 | {"8.20.a", 0x15}, | |
58 | {"8.20.b", 0x16}, | |
59 | {"8.30.a", 0x17}, | |
60 | {"8.40.a", 0x18}, | |
61 | {"8.40.b", 0x19}, | |
62 | {"8.50.a", 0x1A}, | |
63 | {"9.0", 0x1B}, | |
64 | {"9.1", 0x1D}, | |
65 | {"9.2", 0x1F}, | |
66 | {"9.3", 0x20}, | |
d79fcbc2 EI |
67 | {"9.4", 0x21}, |
68 | {"9.5", 0x22}, | |
69 | {"9.6", 0x23}, | |
feac83af | 70 | {"10.0", 0x24}, |
72e38754 AF |
71 | {NULL, 0}, |
72 | }; | |
b77f98ca | 73 | |
4c8ac107 EI |
74 | /* If no specific version gets selected, default to the following. */ |
75 | #define DEFAULT_CPU_VERSION "10.0" | |
76 | ||
f45748f1 AF |
77 | static void mb_cpu_set_pc(CPUState *cs, vaddr value) |
78 | { | |
79 | MicroBlazeCPU *cpu = MICROBLAZE_CPU(cs); | |
80 | ||
76e8187d | 81 | cpu->env.pc = value; |
88e74b61 RH |
82 | /* Ensure D_FLAG and IMM_FLAG are clear for the new PC */ |
83 | cpu->env.iflags = 0; | |
84 | } | |
85 | ||
04a37d4c RH |
86 | static void mb_cpu_synchronize_from_tb(CPUState *cs, |
87 | const TranslationBlock *tb) | |
88e74b61 RH |
88 | { |
89 | MicroBlazeCPU *cpu = MICROBLAZE_CPU(cs); | |
90 | ||
91 | cpu->env.pc = tb->pc; | |
92 | cpu->env.iflags = tb->flags & IFLAGS_TB_MASK; | |
f45748f1 AF |
93 | } |
94 | ||
8c2e1b00 AF |
95 | static bool mb_cpu_has_work(CPUState *cs) |
96 | { | |
97 | return cs->interrupt_request & (CPU_INTERRUPT_HARD | CPU_INTERRUPT_NMI); | |
98 | } | |
99 | ||
73c69456 AF |
100 | #ifndef CONFIG_USER_ONLY |
101 | static void microblaze_cpu_set_irq(void *opaque, int irq, int level) | |
102 | { | |
103 | MicroBlazeCPU *cpu = opaque; | |
104 | CPUState *cs = CPU(cpu); | |
105 | int type = irq ? CPU_INTERRUPT_NMI : CPU_INTERRUPT_HARD; | |
106 | ||
107 | if (level) { | |
108 | cpu_interrupt(cs, type); | |
109 | } else { | |
110 | cpu_reset_interrupt(cs, type); | |
111 | } | |
112 | } | |
113 | #endif | |
114 | ||
781c67ca | 115 | static void mb_cpu_reset(DeviceState *dev) |
b77f98ca | 116 | { |
781c67ca | 117 | CPUState *s = CPU(dev); |
b77f98ca AF |
118 | MicroBlazeCPU *cpu = MICROBLAZE_CPU(s); |
119 | MicroBlazeCPUClass *mcc = MICROBLAZE_CPU_GET_CLASS(cpu); | |
120 | CPUMBState *env = &cpu->env; | |
121 | ||
781c67ca | 122 | mcc->parent_reset(dev); |
b77f98ca | 123 | |
1f5c00cf | 124 | memset(env, 0, offsetof(CPUMBState, end_reset_fields)); |
8cc9b43f | 125 | env->res_addr = RES_ADDR_NONE; |
61b6208f AF |
126 | |
127 | /* Disable stack protector. */ | |
128 | env->shr = ~0; | |
129 | ||
76e8187d | 130 | env->pc = cpu->cfg.base_vectors; |
5250ced8 | 131 | |
8bac2242 AF |
132 | #if defined(CONFIG_USER_ONLY) |
133 | /* start in user mode with interrupts enabled. */ | |
1074c0fb | 134 | mb_cpu_write_msr(env, MSR_EE | MSR_IE | MSR_VM | MSR_UM); |
8bac2242 | 135 | #else |
1074c0fb | 136 | mb_cpu_write_msr(env, 0); |
8bac2242 | 137 | mmu_init(&env->mmu); |
8bac2242 AF |
138 | #endif |
139 | } | |
140 | ||
efc6674b PC |
141 | static void mb_disas_set_info(CPUState *cpu, disassemble_info *info) |
142 | { | |
143 | info->mach = bfd_arch_microblaze; | |
144 | info->print_insn = print_insn_microblaze; | |
145 | } | |
146 | ||
8bac2242 AF |
147 | static void mb_cpu_realizefn(DeviceState *dev, Error **errp) |
148 | { | |
149 | CPUState *cs = CPU(dev); | |
150 | MicroBlazeCPUClass *mcc = MICROBLAZE_CPU_GET_CLASS(dev); | |
151 | MicroBlazeCPU *cpu = MICROBLAZE_CPU(cs); | |
72e38754 | 152 | uint8_t version_code = 0; |
4c8ac107 | 153 | const char *version; |
72e38754 | 154 | int i = 0; |
ce5b1bbf LV |
155 | Error *local_err = NULL; |
156 | ||
157 | cpu_exec_realizefn(cs, &local_err); | |
158 | if (local_err != NULL) { | |
159 | error_propagate(errp, local_err); | |
160 | return; | |
161 | } | |
8bac2242 | 162 | |
25ec2fdd EI |
163 | if (cpu->cfg.addr_size < 32 || cpu->cfg.addr_size > 64) { |
164 | error_setg(errp, "addr-size %d is out of range (32 - 64)", | |
d248e1be EI |
165 | cpu->cfg.addr_size); |
166 | return; | |
167 | } | |
168 | ||
8bac2242 AF |
169 | qemu_init_vcpu(cs); |
170 | ||
4c8ac107 EI |
171 | version = cpu->cfg.version ? cpu->cfg.version : DEFAULT_CPU_VERSION; |
172 | for (i = 0; mb_cpu_lookup[i].name && version; i++) { | |
173 | if (strcmp(mb_cpu_lookup[i].name, version) == 0) { | |
72e38754 AF |
174 | version_code = mb_cpu_lookup[i].version_id; |
175 | break; | |
176 | } | |
177 | } | |
178 | ||
179 | if (!version_code) { | |
180 | qemu_log("Invalid MicroBlaze version number: %s\n", cpu->cfg.version); | |
181 | } | |
182 | ||
a4bcfc33 RH |
183 | cpu->cfg.pvr_regs[0] = |
184 | (PVR0_USE_EXC_MASK | | |
185 | PVR0_USE_ICACHE_MASK | | |
186 | PVR0_USE_DCACHE_MASK | | |
187 | (cpu->cfg.stackprot ? PVR0_SPROT_MASK : 0) | | |
188 | (cpu->cfg.use_fpu ? PVR0_USE_FPU_MASK : 0) | | |
189 | (cpu->cfg.use_hw_mul ? PVR0_USE_HW_MUL_MASK : 0) | | |
190 | (cpu->cfg.use_barrel ? PVR0_USE_BARREL_MASK : 0) | | |
191 | (cpu->cfg.use_div ? PVR0_USE_DIV_MASK : 0) | | |
192 | (cpu->cfg.use_mmu ? PVR0_USE_MMU_MASK : 0) | | |
193 | (cpu->cfg.endi ? PVR0_ENDI_MASK : 0) | | |
194 | (version_code << PVR0_VERSION_SHIFT) | | |
195 | (cpu->cfg.pvr == C_PVR_FULL ? PVR0_PVR_FULL_MASK : 0) | | |
196 | cpu->cfg.pvr_user1); | |
197 | ||
198 | cpu->cfg.pvr_regs[1] = cpu->cfg.pvr_user2; | |
199 | ||
200 | cpu->cfg.pvr_regs[2] = | |
201 | (PVR2_D_OPB_MASK | | |
202 | PVR2_D_LMB_MASK | | |
203 | PVR2_I_OPB_MASK | | |
204 | PVR2_I_LMB_MASK | | |
205 | PVR2_FPU_EXC_MASK | | |
206 | (cpu->cfg.use_fpu ? PVR2_USE_FPU_MASK : 0) | | |
207 | (cpu->cfg.use_fpu > 1 ? PVR2_USE_FPU2_MASK : 0) | | |
208 | (cpu->cfg.use_hw_mul ? PVR2_USE_HW_MUL_MASK : 0) | | |
209 | (cpu->cfg.use_hw_mul > 1 ? PVR2_USE_MUL64_MASK : 0) | | |
210 | (cpu->cfg.use_barrel ? PVR2_USE_BARREL_MASK : 0) | | |
211 | (cpu->cfg.use_div ? PVR2_USE_DIV_MASK : 0) | | |
212 | (cpu->cfg.use_msr_instr ? PVR2_USE_MSR_INSTR : 0) | | |
213 | (cpu->cfg.use_pcmp_instr ? PVR2_USE_PCMP_INSTR : 0) | | |
214 | (cpu->cfg.dopb_bus_exception ? PVR2_DOPB_BUS_EXC_MASK : 0) | | |
215 | (cpu->cfg.iopb_bus_exception ? PVR2_IOPB_BUS_EXC_MASK : 0) | | |
216 | (cpu->cfg.div_zero_exception ? PVR2_DIV_ZERO_EXC_MASK : 0) | | |
217 | (cpu->cfg.illegal_opcode_exception ? PVR2_ILL_OPCODE_EXC_MASK : 0) | | |
218 | (cpu->cfg.unaligned_exceptions ? PVR2_UNALIGNED_EXC_MASK : 0) | | |
219 | (cpu->cfg.opcode_0_illegal ? PVR2_OPCODE_0x0_ILL_MASK : 0)); | |
220 | ||
221 | cpu->cfg.pvr_regs[5] |= | |
222 | cpu->cfg.dcache_writeback ? PVR5_DCACHE_WRITEBACK_MASK : 0; | |
223 | ||
224 | cpu->cfg.pvr_regs[10] = | |
225 | (0x0c000000 | /* Default to spartan 3a dsp family. */ | |
226 | (cpu->cfg.addr_size - 32) << PVR10_ASIZE_SHIFT); | |
227 | ||
228 | cpu->cfg.pvr_regs[11] = ((cpu->cfg.use_mmu ? PVR11_USE_MMU : 0) | | |
229 | 16 << 17); | |
61b6208f | 230 | |
de73ee1a RH |
231 | cpu->cfg.mmu = 3; |
232 | cpu->cfg.mmu_tlb_access = 3; | |
233 | cpu->cfg.mmu_zones = 16; | |
234 | cpu->cfg.addr_mask = MAKE_64BIT_MASK(0, cpu->cfg.addr_size); | |
235 | ||
746b03b2 AF |
236 | mcc->parent_realize(dev, errp); |
237 | } | |
238 | ||
d0e71ef5 AF |
239 | static void mb_cpu_initfn(Object *obj) |
240 | { | |
241 | MicroBlazeCPU *cpu = MICROBLAZE_CPU(obj); | |
242 | CPUMBState *env = &cpu->env; | |
243 | ||
7506ed90 | 244 | cpu_set_cpustate_pointers(cpu); |
d0e71ef5 AF |
245 | |
246 | set_float_rounding_mode(float_round_nearest_even, &env->fp_status); | |
cd0c24f9 | 247 | |
73c69456 AF |
248 | #ifndef CONFIG_USER_ONLY |
249 | /* Inbound IRQ and FIR lines */ | |
250 | qdev_init_gpio_in(DEVICE(cpu), microblaze_cpu_set_irq, 2); | |
251 | #endif | |
d0e71ef5 AF |
252 | } |
253 | ||
a1bff71c | 254 | static Property mb_properties[] = { |
f27183ab | 255 | DEFINE_PROP_UINT32("base-vectors", MicroBlazeCPU, cfg.base_vectors, 0), |
9aaaa181 | 256 | DEFINE_PROP_BOOL("use-stack-protection", MicroBlazeCPU, cfg.stackprot, |
f44c475c | 257 | false), |
d248e1be EI |
258 | /* |
259 | * This is the C_ADDR_SIZE synth-time configuration option of the | |
260 | * MicroBlaze cores. Supported values range between 32 and 64. | |
261 | * | |
262 | * When set to > 32, 32bit MicroBlaze can emit load/stores | |
263 | * with extended addressing. | |
264 | */ | |
265 | DEFINE_PROP_UINT8("addr-size", MicroBlazeCPU, cfg.addr_size, 32), | |
4e5d45ae AF |
266 | /* If use-fpu > 0 - FPU is enabled |
267 | * If use-fpu = 2 - Floating point conversion and square root instructions | |
268 | * are enabled | |
269 | */ | |
be67e9ab | 270 | DEFINE_PROP_UINT8("use-fpu", MicroBlazeCPU, cfg.use_fpu, 2), |
9b964318 EI |
271 | /* If use-hw-mul > 0 - Multiplier is enabled |
272 | * If use-hw-mul = 2 - 64-bit multiplier is enabled | |
273 | */ | |
274 | DEFINE_PROP_UINT8("use-hw-mul", MicroBlazeCPU, cfg.use_hw_mul, 2), | |
7faa66aa | 275 | DEFINE_PROP_BOOL("use-barrel", MicroBlazeCPU, cfg.use_barrel, true), |
47709e4c | 276 | DEFINE_PROP_BOOL("use-div", MicroBlazeCPU, cfg.use_div, true), |
56837509 | 277 | DEFINE_PROP_BOOL("use-msr-instr", MicroBlazeCPU, cfg.use_msr_instr, true), |
8fc5239e | 278 | DEFINE_PROP_BOOL("use-pcmp-instr", MicroBlazeCPU, cfg.use_pcmp_instr, true), |
71446123 | 279 | DEFINE_PROP_BOOL("use-mmu", MicroBlazeCPU, cfg.use_mmu, true), |
a6c3ed24 AF |
280 | DEFINE_PROP_BOOL("dcache-writeback", MicroBlazeCPU, cfg.dcache_writeback, |
281 | false), | |
a88bbb00 | 282 | DEFINE_PROP_BOOL("endianness", MicroBlazeCPU, cfg.endi, false), |
2867a96f EI |
283 | /* Enables bus exceptions on failed data accesses (load/stores). */ |
284 | DEFINE_PROP_BOOL("dopb-bus-exception", MicroBlazeCPU, | |
285 | cfg.dopb_bus_exception, false), | |
286 | /* Enables bus exceptions on failed instruction fetches. */ | |
287 | DEFINE_PROP_BOOL("iopb-bus-exception", MicroBlazeCPU, | |
288 | cfg.iopb_bus_exception, false), | |
5143fdf3 EI |
289 | DEFINE_PROP_BOOL("ill-opcode-exception", MicroBlazeCPU, |
290 | cfg.illegal_opcode_exception, false), | |
622cc730 EI |
291 | DEFINE_PROP_BOOL("div-zero-exception", MicroBlazeCPU, |
292 | cfg.div_zero_exception, false), | |
1507e5f6 EI |
293 | DEFINE_PROP_BOOL("unaligned-exceptions", MicroBlazeCPU, |
294 | cfg.unaligned_exceptions, false), | |
1ee1bd28 EI |
295 | DEFINE_PROP_BOOL("opcode-0x0-illegal", MicroBlazeCPU, |
296 | cfg.opcode_0_illegal, false), | |
72e38754 | 297 | DEFINE_PROP_STRING("version", MicroBlazeCPU, cfg.version), |
6fad9e98 | 298 | DEFINE_PROP_UINT8("pvr", MicroBlazeCPU, cfg.pvr, C_PVR_FULL), |
c9767325 | 299 | DEFINE_PROP_UINT8("pvr-user1", MicroBlazeCPU, cfg.pvr_user1, 0), |
3ed43b50 | 300 | DEFINE_PROP_UINT32("pvr-user2", MicroBlazeCPU, cfg.pvr_user2, 0), |
a1bff71c EI |
301 | DEFINE_PROP_END_OF_LIST(), |
302 | }; | |
303 | ||
98aca243 IM |
304 | static ObjectClass *mb_cpu_class_by_name(const char *cpu_model) |
305 | { | |
306 | return object_class_by_name(TYPE_MICROBLAZE_CPU); | |
307 | } | |
308 | ||
b77f98ca AF |
309 | static void mb_cpu_class_init(ObjectClass *oc, void *data) |
310 | { | |
3ce8b2bc | 311 | DeviceClass *dc = DEVICE_CLASS(oc); |
b77f98ca AF |
312 | CPUClass *cc = CPU_CLASS(oc); |
313 | MicroBlazeCPUClass *mcc = MICROBLAZE_CPU_CLASS(oc); | |
314 | ||
bf853881 PMD |
315 | device_class_set_parent_realize(dc, mb_cpu_realizefn, |
316 | &mcc->parent_realize); | |
781c67ca | 317 | device_class_set_parent_reset(dc, mb_cpu_reset, &mcc->parent_reset); |
3ce8b2bc | 318 | |
98aca243 | 319 | cc->class_by_name = mb_cpu_class_by_name; |
8c2e1b00 | 320 | cc->has_work = mb_cpu_has_work; |
97a8ea5a | 321 | cc->do_interrupt = mb_cpu_do_interrupt; |
ab0c8d0f | 322 | cc->do_unaligned_access = mb_cpu_do_unaligned_access; |
29cd33d3 | 323 | cc->cpu_exec_interrupt = mb_cpu_exec_interrupt; |
878096ee | 324 | cc->dump_state = mb_cpu_dump_state; |
f45748f1 | 325 | cc->set_pc = mb_cpu_set_pc; |
88e74b61 | 326 | cc->synchronize_from_tb = mb_cpu_synchronize_from_tb; |
5b50e790 AF |
327 | cc->gdb_read_register = mb_cpu_gdb_read_register; |
328 | cc->gdb_write_register = mb_cpu_gdb_write_register; | |
f429d607 RH |
329 | cc->tlb_fill = mb_cpu_tlb_fill; |
330 | #ifndef CONFIG_USER_ONLY | |
bdff8123 | 331 | cc->do_transaction_failed = mb_cpu_transaction_failed; |
00b941e5 | 332 | cc->get_phys_page_debug = mb_cpu_get_phys_page_debug; |
3ce8b2bc | 333 | dc->vmsd = &vmstate_mb_cpu; |
77f63e1d | 334 | #endif |
4f67d30b | 335 | device_class_set_props(dc, mb_properties); |
a44e82db | 336 | cc->gdb_num_core_regs = 32 + 27; |
efc6674b PC |
337 | |
338 | cc->disas_set_info = mb_disas_set_info; | |
55c3ceef | 339 | cc->tcg_initialize = mb_tcg_init; |
b77f98ca AF |
340 | } |
341 | ||
342 | static const TypeInfo mb_cpu_type_info = { | |
343 | .name = TYPE_MICROBLAZE_CPU, | |
344 | .parent = TYPE_CPU, | |
345 | .instance_size = sizeof(MicroBlazeCPU), | |
d0e71ef5 | 346 | .instance_init = mb_cpu_initfn, |
b77f98ca AF |
347 | .class_size = sizeof(MicroBlazeCPUClass), |
348 | .class_init = mb_cpu_class_init, | |
349 | }; | |
350 | ||
351 | static void mb_cpu_register_types(void) | |
352 | { | |
353 | type_register_static(&mb_cpu_type_info); | |
354 | } | |
355 | ||
356 | type_init(mb_cpu_register_types) |