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27#include "qemu/osdep.h"
28#include "qemu/error-report.h"
29#include "qapi/error.h"
30#include "qemu-common.h"
31#include "cpu.h"
32#include "hw/sysbus.h"
33#include "hw/hw.h"
34#include "hw/isa/isa.h"
35#include "net/net.h"
36#include "sysemu/sysemu.h"
37#include "hw/boards.h"
38#include "hw/loader.h"
39#include "hw/char/serial.h"
40#include "exec/address-spaces.h"
41#include "elf.h"
42
43#define PHYS_MEM_BASE 0x80000000
44#define FIRMWARE_BASE 0x1000
45#define FIRMWARE_SIZE (128 * 0x1000)
46
47typedef struct {
48 uint64_t ram_size;
49 const char *kernel_filename;
50 const char *kernel_cmdline;
51 const char *initrd_filename;
52} LoaderParams;
53
54static void load_kernel(MoxieCPU *cpu, LoaderParams *loader_params)
55{
56 uint64_t entry, kernel_low, kernel_high;
57 int64_t initrd_size;
58 long kernel_size;
59 ram_addr_t initrd_offset;
60
61 kernel_size = load_elf(loader_params->kernel_filename, NULL, NULL,
62 &entry, &kernel_low, &kernel_high, 1, EM_MOXIE,
63 0, 0);
64
65 if (kernel_size <= 0) {
66 error_report("could not load kernel '%s'",
67 loader_params->kernel_filename);
68 exit(1);
69 }
70
71
72 initrd_size = 0;
73 initrd_offset = 0;
74 if (loader_params->initrd_filename) {
75 initrd_size = get_image_size(loader_params->initrd_filename);
76 if (initrd_size > 0) {
77 initrd_offset = (kernel_high + ~TARGET_PAGE_MASK)
78 & TARGET_PAGE_MASK;
79 if (initrd_offset + initrd_size > loader_params->ram_size) {
80 error_report("memory too small for initial ram disk '%s'",
81 loader_params->initrd_filename);
82 exit(1);
83 }
84 initrd_size = load_image_targphys(loader_params->initrd_filename,
85 initrd_offset,
86 ram_size);
87 }
88 if (initrd_size == (target_ulong)-1) {
89 error_report("could not load initial ram disk '%s'",
90 loader_params->initrd_filename);
91 exit(1);
92 }
93 }
94}
95
96static void main_cpu_reset(void *opaque)
97{
98 MoxieCPU *cpu = opaque;
99
100 cpu_reset(CPU(cpu));
101}
102
103static void moxiesim_init(MachineState *machine)
104{
105 MoxieCPU *cpu = NULL;
106 ram_addr_t ram_size = machine->ram_size;
107 const char *kernel_filename = machine->kernel_filename;
108 const char *kernel_cmdline = machine->kernel_cmdline;
109 const char *initrd_filename = machine->initrd_filename;
110 CPUMoxieState *env;
111 MemoryRegion *address_space_mem = get_system_memory();
112 MemoryRegion *ram = g_new(MemoryRegion, 1);
113 MemoryRegion *rom = g_new(MemoryRegion, 1);
114 hwaddr ram_base = 0x200000;
115 LoaderParams loader_params;
116
117
118 cpu = MOXIE_CPU(cpu_create(machine->cpu_type));
119 env = &cpu->env;
120
121 qemu_register_reset(main_cpu_reset, cpu);
122
123
124 memory_region_init_ram(ram, NULL, "moxiesim.ram", ram_size, &error_fatal);
125 memory_region_add_subregion(address_space_mem, ram_base, ram);
126
127 memory_region_init_ram(rom, NULL, "moxie.rom", FIRMWARE_SIZE, &error_fatal);
128 memory_region_add_subregion(get_system_memory(), FIRMWARE_BASE, rom);
129
130 if (kernel_filename) {
131 loader_params.ram_size = ram_size;
132 loader_params.kernel_filename = kernel_filename;
133 loader_params.kernel_cmdline = kernel_cmdline;
134 loader_params.initrd_filename = initrd_filename;
135 load_kernel(cpu, &loader_params);
136 }
137 if (bios_name) {
138 if (load_image_targphys(bios_name, FIRMWARE_BASE, FIRMWARE_SIZE) < 0) {
139 error_report("Failed to load firmware '%s'", bios_name);
140 }
141 }
142
143
144 if (serial_hd(0)) {
145 serial_mm_init(address_space_mem, 0x3f8, 0, env->irq[4],
146 8000000/16, serial_hd(0), DEVICE_LITTLE_ENDIAN);
147 }
148}
149
150static void moxiesim_machine_init(MachineClass *mc)
151{
152 mc->desc = "Moxie simulator platform";
153 mc->init = moxiesim_init;
154 mc->is_default = 1;
155 mc->default_cpu_type = MOXIE_CPU_TYPE_NAME("MoxieLite");
156}
157
158DEFINE_MACHINE("moxiesim", moxiesim_machine_init)
159