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 "cpu.h" |
31 | #include "sysemu/reset.h" |
32 | #include "sysemu/sysemu.h" |
33 | #include "hw/boards.h" |
34 | #include "hw/loader.h" |
35 | #include "elf.h" |
36 | #include "exec/memory.h" |
37 | #include "exec/address-spaces.h" |
38 | #include "qemu/error-report.h" |
39 | #include "xtensa_memory.h" |
40 | |
41 | static uint64_t translate_phys_addr(void *opaque, uint64_t addr) |
42 | { |
43 | XtensaCPU *cpu = opaque; |
44 | |
45 | return cpu_get_phys_page_debug(CPU(cpu), addr); |
46 | } |
47 | |
48 | static void sim_reset(void *opaque) |
49 | { |
50 | XtensaCPU *cpu = opaque; |
51 | |
52 | cpu_reset(CPU(cpu)); |
53 | } |
54 | |
55 | static void xtensa_sim_init(MachineState *machine) |
56 | { |
57 | XtensaCPU *cpu = NULL; |
58 | CPUXtensaState *env = NULL; |
59 | ram_addr_t ram_size = machine->ram_size; |
60 | const char *kernel_filename = machine->kernel_filename; |
61 | int n; |
62 | |
63 | for (n = 0; n < machine->smp.cpus; n++) { |
64 | cpu = XTENSA_CPU(cpu_create(machine->cpu_type)); |
65 | env = &cpu->env; |
66 | |
67 | env->sregs[PRID] = n; |
68 | qemu_register_reset(sim_reset, cpu); |
69 | /* Need MMU initialized prior to ELF loading, |
70 | * so that ELF gets loaded into virtual addresses |
71 | */ |
72 | sim_reset(cpu); |
73 | } |
74 | |
75 | if (env) { |
76 | XtensaMemory sysram = env->config->sysram; |
77 | |
78 | sysram.location[0].size = ram_size; |
79 | xtensa_create_memory_regions(&env->config->instrom, "xtensa.instrom" , |
80 | get_system_memory()); |
81 | xtensa_create_memory_regions(&env->config->instram, "xtensa.instram" , |
82 | get_system_memory()); |
83 | xtensa_create_memory_regions(&env->config->datarom, "xtensa.datarom" , |
84 | get_system_memory()); |
85 | xtensa_create_memory_regions(&env->config->dataram, "xtensa.dataram" , |
86 | get_system_memory()); |
87 | xtensa_create_memory_regions(&env->config->sysrom, "xtensa.sysrom" , |
88 | get_system_memory()); |
89 | xtensa_create_memory_regions(&sysram, "xtensa.sysram" , |
90 | get_system_memory()); |
91 | } |
92 | |
93 | if (serial_hd(0)) { |
94 | xtensa_sim_open_console(serial_hd(0)); |
95 | } |
96 | if (kernel_filename) { |
97 | uint64_t elf_entry; |
98 | uint64_t elf_lowaddr; |
99 | #ifdef TARGET_WORDS_BIGENDIAN |
100 | int success = load_elf(kernel_filename, NULL, |
101 | translate_phys_addr, cpu, |
102 | &elf_entry, &elf_lowaddr, |
103 | NULL, 1, EM_XTENSA, 0, 0); |
104 | #else |
105 | int success = load_elf(kernel_filename, NULL, |
106 | translate_phys_addr, cpu, |
107 | &elf_entry, &elf_lowaddr, |
108 | NULL, 0, EM_XTENSA, 0, 0); |
109 | #endif |
110 | if (success > 0) { |
111 | env->pc = elf_entry; |
112 | } |
113 | } |
114 | } |
115 | |
116 | static void xtensa_sim_machine_init(MachineClass *mc) |
117 | { |
118 | mc->desc = "sim machine (" XTENSA_DEFAULT_CPU_MODEL ")" ; |
119 | mc->is_default = true; |
120 | mc->init = xtensa_sim_init; |
121 | mc->max_cpus = 4; |
122 | mc->no_serial = 1; |
123 | mc->default_cpu_type = XTENSA_DEFAULT_CPU_TYPE; |
124 | } |
125 | |
126 | DEFINE_MACHINE("sim" , xtensa_sim_machine_init) |
127 | |