Update VERSION for v7.2.0-rc3
[qemu.git] / hw / xtensa / sim.c
1 /*
2 * Copyright (c) 2011, Max Filippov, Open Source and Linux Lab.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of the Open Source and Linux Lab nor the
13 * names of its contributors may be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #include "qemu/osdep.h"
29 #include "qapi/error.h"
30 #include "sysemu/reset.h"
31 #include "sysemu/sysemu.h"
32 #include "hw/boards.h"
33 #include "hw/loader.h"
34 #include "elf.h"
35 #include "exec/memory.h"
36 #include "qemu/error-report.h"
37 #include "xtensa_memory.h"
38 #include "xtensa_sim.h"
39
40 static uint64_t translate_phys_addr(void *opaque, uint64_t addr)
41 {
42 XtensaCPU *cpu = opaque;
43
44 return cpu_get_phys_page_debug(CPU(cpu), addr);
45 }
46
47 static void sim_reset(void *opaque)
48 {
49 XtensaCPU *cpu = opaque;
50
51 cpu_reset(CPU(cpu));
52 }
53
54 XtensaCPU *xtensa_sim_common_init(MachineState *machine)
55 {
56 XtensaCPU *cpu = NULL;
57 CPUXtensaState *env = NULL;
58 ram_addr_t ram_size = machine->ram_size;
59 int n;
60
61 for (n = 0; n < machine->smp.cpus; n++) {
62 cpu = XTENSA_CPU(cpu_create(machine->cpu_type));
63 env = &cpu->env;
64
65 env->sregs[PRID] = n;
66 qemu_register_reset(sim_reset, cpu);
67 /* Need MMU initialized prior to ELF loading,
68 * so that ELF gets loaded into virtual addresses
69 */
70 sim_reset(cpu);
71 }
72
73 if (env) {
74 XtensaMemory sysram = env->config->sysram;
75
76 sysram.location[0].size = ram_size;
77 xtensa_create_memory_regions(&env->config->instrom, "xtensa.instrom",
78 get_system_memory());
79 xtensa_create_memory_regions(&env->config->instram, "xtensa.instram",
80 get_system_memory());
81 xtensa_create_memory_regions(&env->config->datarom, "xtensa.datarom",
82 get_system_memory());
83 xtensa_create_memory_regions(&env->config->dataram, "xtensa.dataram",
84 get_system_memory());
85 xtensa_create_memory_regions(&env->config->sysrom, "xtensa.sysrom",
86 get_system_memory());
87 xtensa_create_memory_regions(&sysram, "xtensa.sysram",
88 get_system_memory());
89 }
90 if (serial_hd(0)) {
91 xtensa_sim_open_console(serial_hd(0));
92 }
93 return cpu;
94 }
95
96 void xtensa_sim_load_kernel(XtensaCPU *cpu, MachineState *machine)
97 {
98 const char *kernel_filename = machine->kernel_filename;
99 #if TARGET_BIG_ENDIAN
100 int big_endian = true;
101 #else
102 int big_endian = false;
103 #endif
104
105 if (kernel_filename) {
106 uint64_t elf_entry;
107 int success = load_elf(kernel_filename, NULL, translate_phys_addr, cpu,
108 &elf_entry, NULL, NULL, NULL, big_endian,
109 EM_XTENSA, 0, 0);
110
111 if (success > 0) {
112 cpu->env.pc = elf_entry;
113 }
114 }
115 }
116
117 static void xtensa_sim_init(MachineState *machine)
118 {
119 XtensaCPU *cpu = xtensa_sim_common_init(machine);
120
121 xtensa_sim_load_kernel(cpu, machine);
122 }
123
124 static void xtensa_sim_machine_init(MachineClass *mc)
125 {
126 mc->desc = "sim machine (" XTENSA_DEFAULT_CPU_MODEL ")";
127 mc->is_default = true;
128 mc->init = xtensa_sim_init;
129 mc->max_cpus = 4;
130 mc->no_serial = 1;
131 mc->default_cpu_type = XTENSA_DEFAULT_CPU_TYPE;
132 }
133
134 DEFINE_MACHINE("sim", xtensa_sim_machine_init)