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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 "sysemu.h"
29#include "boards.h"
30#include "loader.h"
31#include "elf.h"
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32#include "exec/memory.h"
33#include "exec/address-spaces.h"
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34
35static uint64_t translate_phys_addr(void *env, uint64_t addr)
36{
37 return cpu_get_phys_page_debug(env, addr);
38}
39
11e7bfd7 40static void sim_reset(void *opaque)
47d05a86 41{
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42 XtensaCPU *cpu = opaque;
43
44 cpu_reset(CPU(cpu));
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45}
46
50cd7214 47static void xtensa_sim_init(QEMUMachineInitArgs *args)
47d05a86 48{
06d26274 49 XtensaCPU *cpu = NULL;
5bfcb36e 50 CPUXtensaState *env = NULL;
47d05a86 51 MemoryRegion *ram, *rom;
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52 ram_addr_t ram_size = args->ram_size;
53 const char *cpu_model = args->cpu_model;
54 const char *kernel_filename = args->kernel_filename;
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55 int n;
56
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57 if (!cpu_model) {
58 cpu_model = XTENSA_DEFAULT_CPU_MODEL;
59 }
60
47d05a86 61 for (n = 0; n < smp_cpus; n++) {
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62 cpu = cpu_xtensa_init(cpu_model);
63 if (cpu == NULL) {
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64 fprintf(stderr, "Unable to find CPU definition\n");
65 exit(1);
66 }
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67 env = &cpu->env;
68
47d05a86 69 env->sregs[PRID] = n;
11e7bfd7 70 qemu_register_reset(sim_reset, cpu);
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71 /* Need MMU initialized prior to ELF loading,
72 * so that ELF gets loaded into virtual addresses
73 */
11e7bfd7 74 sim_reset(cpu);
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75 }
76
77 ram = g_malloc(sizeof(*ram));
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78 memory_region_init_ram(ram, "xtensa.sram", ram_size);
79 vmstate_register_ram_global(ram);
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80 memory_region_add_subregion(get_system_memory(), 0, ram);
81
82 rom = g_malloc(sizeof(*rom));
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83 memory_region_init_ram(rom, "xtensa.rom", 0x1000);
84 vmstate_register_ram_global(rom);
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85 memory_region_add_subregion(get_system_memory(), 0xfe000000, rom);
86
87 if (kernel_filename) {
88 uint64_t elf_entry;
89 uint64_t elf_lowaddr;
90#ifdef TARGET_WORDS_BIGENDIAN
91 int success = load_elf(kernel_filename, translate_phys_addr, env,
92 &elf_entry, &elf_lowaddr, NULL, 1, ELF_MACHINE, 0);
93#else
94 int success = load_elf(kernel_filename, translate_phys_addr, env,
95 &elf_entry, &elf_lowaddr, NULL, 0, ELF_MACHINE, 0);
96#endif
97 if (success > 0) {
98 env->pc = elf_entry;
99 }
100 }
101}
102
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103static QEMUMachine xtensa_sim_machine = {
104 .name = "sim",
e38077ff 105 .desc = "sim machine (" XTENSA_DEFAULT_CPU_MODEL ")",
82e5d464 106 .is_default = true,
5e408573 107 .init = xtensa_sim_init,
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108 .max_cpus = 4,
109};
110
5e408573 111static void xtensa_sim_machine_init(void)
47d05a86 112{
5e408573 113 qemu_register_machine(&xtensa_sim_machine);
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114}
115
5e408573 116machine_init(xtensa_sim_machine_init);