1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
/*
* QEMU/moxiesim emulation
*
* Emulates a very simple machine model similar to the one used by the
* GDB moxie simulator.
*
* Copyright (c) 2008, 2009, 2010, 2013 Anthony Green
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "hw/sysbus.h"
#include "hw/hw.h"
#include "hw/i386/pc.h"
#include "hw/isa/isa.h"
#include "net/net.h"
#include "sysemu/sysemu.h"
#include "hw/boards.h"
#include "hw/loader.h"
#include "hw/char/serial.h"
#include "exec/address-spaces.h"
#include "elf.h"
#define PHYS_MEM_BASE 0x80000000
typedef struct {
uint64_t ram_size;
const char *kernel_filename;
const char *kernel_cmdline;
const char *initrd_filename;
} LoaderParams;
static void load_kernel(MoxieCPU *cpu, LoaderParams *loader_params)
{
uint64_t entry, kernel_low, kernel_high;
long kernel_size;
long initrd_size;
ram_addr_t initrd_offset;
kernel_size = load_elf(loader_params->kernel_filename, NULL, NULL,
&entry, &kernel_low, &kernel_high, 1, EM_MOXIE,
0, 0);
if (kernel_size <= 0) {
fprintf(stderr, "qemu: could not load kernel '%s'\n",
loader_params->kernel_filename);
exit(1);
}
/* load initrd */
initrd_size = 0;
initrd_offset = 0;
if (loader_params->initrd_filename) {
initrd_size = get_image_size(loader_params->initrd_filename);
if (initrd_size > 0) {
initrd_offset = (kernel_high + ~TARGET_PAGE_MASK)
& TARGET_PAGE_MASK;
if (initrd_offset + initrd_size > loader_params->ram_size) {
fprintf(stderr,
"qemu: memory too small for initial ram disk '%s'\n",
loader_params->initrd_filename);
exit(1);
}
initrd_size = load_image_targphys(loader_params->initrd_filename,
initrd_offset,
ram_size);
}
if (initrd_size == (target_ulong)-1) {
fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
loader_params->initrd_filename);
exit(1);
}
}
}
static void main_cpu_reset(void *opaque)
{
MoxieCPU *cpu = opaque;
cpu_reset(CPU(cpu));
}
static void moxiesim_init(MachineState *machine)
{
MoxieCPU *cpu = NULL;
ram_addr_t ram_size = machine->ram_size;
const char *cpu_model = machine->cpu_model;
const char *kernel_filename = machine->kernel_filename;
const char *kernel_cmdline = machine->kernel_cmdline;
const char *initrd_filename = machine->initrd_filename;
CPUMoxieState *env;
MemoryRegion *address_space_mem = get_system_memory();
MemoryRegion *ram = g_new(MemoryRegion, 1);
MemoryRegion *rom = g_new(MemoryRegion, 1);
hwaddr ram_base = 0x200000;
LoaderParams loader_params;
/* Init CPUs. */
if (cpu_model == NULL) {
cpu_model = "MoxieLite-moxie-cpu";
}
cpu = cpu_moxie_init(cpu_model);
if (!cpu) {
fprintf(stderr, "Unable to find CPU definition\n");
exit(1);
}
env = &cpu->env;
qemu_register_reset(main_cpu_reset, cpu);
/* Allocate RAM. */
memory_region_init_ram(ram, NULL, "moxiesim.ram", ram_size, &error_fatal);
vmstate_register_ram_global(ram);
memory_region_add_subregion(address_space_mem, ram_base, ram);
memory_region_init_ram(rom, NULL, "moxie.rom", 128*0x1000, &error_fatal);
vmstate_register_ram_global(rom);
memory_region_add_subregion(get_system_memory(), 0x1000, rom);
if (kernel_filename) {
loader_params.ram_size = ram_size;
loader_params.kernel_filename = kernel_filename;
loader_params.kernel_cmdline = kernel_cmdline;
loader_params.initrd_filename = initrd_filename;
load_kernel(cpu, &loader_params);
}
/* A single 16450 sits at offset 0x3f8. */
if (serial_hds[0]) {
serial_mm_init(address_space_mem, 0x3f8, 0, env->irq[4],
8000000/16, serial_hds[0], DEVICE_LITTLE_ENDIAN);
}
}
static void moxiesim_machine_init(MachineClass *mc)
{
mc->desc = "Moxie simulator platform";
mc->init = moxiesim_init;
mc->is_default = 1;
}
DEFINE_MACHINE("moxiesim", moxiesim_machine_init)
|
