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27#include "qemu/osdep.h"
28#include "qemu/error-report.h"
29#include "qapi/error.h"
30#include "cpu.h"
31#include "hw/sysbus.h"
32#include "hw/hw.h"
33#include "net/net.h"
34#include "sysemu/sysemu.h"
35#include "hw/boards.h"
36#include "hw/loader.h"
37#include "hw/char/serial.h"
38#include "exec/address-spaces.h"
39#include "elf.h"
40
41#define PHYS_MEM_BASE 0x80000000
42#define FIRMWARE_BASE 0x1000
43#define FIRMWARE_SIZE (128 * 0x1000)
44
45typedef struct {
46 uint64_t ram_size;
47 const char *kernel_filename;
48 const char *kernel_cmdline;
49 const char *initrd_filename;
50} LoaderParams;
51
52static void load_kernel(MoxieCPU *cpu, LoaderParams *loader_params)
53{
54 uint64_t entry, kernel_low, kernel_high;
55 int64_t initrd_size;
56 long kernel_size;
57 ram_addr_t initrd_offset;
58
59 kernel_size = load_elf(loader_params->kernel_filename, NULL, NULL, NULL,
60 &entry, &kernel_low, &kernel_high, 1, EM_MOXIE,
61 0, 0);
62
63 if (kernel_size <= 0) {
64 error_report("could not load kernel '%s'",
65 loader_params->kernel_filename);
66 exit(1);
67 }
68
69
70 initrd_size = 0;
71 initrd_offset = 0;
72 if (loader_params->initrd_filename) {
73 initrd_size = get_image_size(loader_params->initrd_filename);
74 if (initrd_size > 0) {
75 initrd_offset = (kernel_high + ~TARGET_PAGE_MASK)
76 & TARGET_PAGE_MASK;
77 if (initrd_offset + initrd_size > loader_params->ram_size) {
78 error_report("memory too small for initial ram disk '%s'",
79 loader_params->initrd_filename);
80 exit(1);
81 }
82 initrd_size = load_image_targphys(loader_params->initrd_filename,
83 initrd_offset,
84 ram_size);
85 }
86 if (initrd_size == (target_ulong)-1) {
87 error_report("could not load initial ram disk '%s'",
88 loader_params->initrd_filename);
89 exit(1);
90 }
91 }
92}
93
94static void main_cpu_reset(void *opaque)
95{
96 MoxieCPU *cpu = opaque;
97
98 cpu_reset(CPU(cpu));
99}
100
101static void moxiesim_init(MachineState *machine)
102{
103 MoxieCPU *cpu = NULL;
104 ram_addr_t ram_size = machine->ram_size;
105 const char *kernel_filename = machine->kernel_filename;
106 const char *kernel_cmdline = machine->kernel_cmdline;
107 const char *initrd_filename = machine->initrd_filename;
108 CPUMoxieState *env;
109 MemoryRegion *address_space_mem = get_system_memory();
110 MemoryRegion *ram = g_new(MemoryRegion, 1);
111 MemoryRegion *rom = g_new(MemoryRegion, 1);
112 hwaddr ram_base = 0x200000;
113 LoaderParams loader_params;
114
115
116 cpu = MOXIE_CPU(cpu_create(machine->cpu_type));
117 env = &cpu->env;
118
119 qemu_register_reset(main_cpu_reset, cpu);
120
121
122 memory_region_init_ram(ram, NULL, "moxiesim.ram", ram_size, &error_fatal);
123 memory_region_add_subregion(address_space_mem, ram_base, ram);
124
125 memory_region_init_ram(rom, NULL, "moxie.rom", FIRMWARE_SIZE, &error_fatal);
126 memory_region_add_subregion(get_system_memory(), FIRMWARE_BASE, rom);
127
128 if (kernel_filename) {
129 loader_params.ram_size = ram_size;
130 loader_params.kernel_filename = kernel_filename;
131 loader_params.kernel_cmdline = kernel_cmdline;
132 loader_params.initrd_filename = initrd_filename;
133 load_kernel(cpu, &loader_params);
134 }
135 if (bios_name) {
136 if (load_image_targphys(bios_name, FIRMWARE_BASE, FIRMWARE_SIZE) < 0) {
137 error_report("Failed to load firmware '%s'", bios_name);
138 }
139 }
140
141
142 if (serial_hd(0)) {
143 serial_mm_init(address_space_mem, 0x3f8, 0, env->irq[4],
144 8000000/16, serial_hd(0), DEVICE_LITTLE_ENDIAN);
145 }
146}
147
148static void moxiesim_machine_init(MachineClass *mc)
149{
150 mc->desc = "Moxie simulator platform";
151 mc->init = moxiesim_init;
152 mc->is_default = 1;
153 mc->default_cpu_type = MOXIE_CPU_TYPE_NAME("MoxieLite");
154}
155
156DEFINE_MACHINE("moxiesim", moxiesim_machine_init)
157