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28#include "qemu/osdep.h"
29#include "qapi/error.h"
30#include "qemu-common.h"
31#include "cpu.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
40static 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
47static void sim_reset(void *opaque)
48{
49 XtensaCPU *cpu = opaque;
50
51 cpu_reset(CPU(cpu));
52}
53
54static void xtensa_sim_init(MachineState *machine)
55{
56 XtensaCPU *cpu = NULL;
57 CPUXtensaState *env = NULL;
58 MemoryRegion *ram, *rom;
59 ram_addr_t ram_size = machine->ram_size;
60 const char *cpu_model = machine->cpu_model;
61 const char *kernel_filename = machine->kernel_filename;
62 int n;
63
64 if (!cpu_model) {
65 cpu_model = XTENSA_DEFAULT_CPU_MODEL;
66 }
67
68 for (n = 0; n < smp_cpus; n++) {
69 cpu = cpu_xtensa_init(cpu_model);
70 if (cpu == NULL) {
71 error_report("unable to find CPU definition '%s'",
72 cpu_model);
73 exit(EXIT_FAILURE);
74 }
75 env = &cpu->env;
76
77 env->sregs[PRID] = n;
78 qemu_register_reset(sim_reset, cpu);
79
80
81
82 sim_reset(cpu);
83 }
84
85 ram = g_malloc(sizeof(*ram));
86 memory_region_init_ram(ram, NULL, "xtensa.sram", ram_size, &error_fatal);
87 vmstate_register_ram_global(ram);
88 memory_region_add_subregion(get_system_memory(), 0, ram);
89
90 rom = g_malloc(sizeof(*rom));
91 memory_region_init_ram(rom, NULL, "xtensa.rom", 0x1000, &error_fatal);
92 vmstate_register_ram_global(rom);
93 memory_region_add_subregion(get_system_memory(), 0xfe000000, rom);
94
95 if (kernel_filename) {
96 uint64_t elf_entry;
97 uint64_t elf_lowaddr;
98#ifdef TARGET_WORDS_BIGENDIAN
99 int success = load_elf(kernel_filename, translate_phys_addr, cpu,
100 &elf_entry, &elf_lowaddr, NULL, 1, EM_XTENSA, 0, 0);
101#else
102 int success = load_elf(kernel_filename, translate_phys_addr, cpu,
103 &elf_entry, &elf_lowaddr, NULL, 0, EM_XTENSA, 0, 0);
104#endif
105 if (success > 0) {
106 env->pc = elf_entry;
107 }
108 }
109}
110
111static void xtensa_sim_machine_init(MachineClass *mc)
112{
113 mc->desc = "sim machine (" XTENSA_DEFAULT_CPU_MODEL ")";
114 mc->is_default = true;
115 mc->init = xtensa_sim_init;
116 mc->max_cpus = 4;
117}
118
119DEFINE_MACHINE("sim", xtensa_sim_machine_init)
120