hw/arm/raspi: fix CPRMAN base address
[qemu.git] / hw / moxie / moxiesim.c
1 /*
2 * QEMU/moxiesim emulation
3 *
4 * Emulates a very simple machine model similar to the one used by the
5 * GDB moxie simulator.
6 *
7 * Copyright (c) 2008, 2009, 2010, 2013 Anthony Green
8 *
9 * Permission is hereby granted, free of charge, to any person obtaining a copy
10 * of this software and associated documentation files (the "Software"), to deal
11 * in the Software without restriction, including without limitation the rights
12 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
13 * copies of the Software, and to permit persons to whom the Software is
14 * furnished to do so, subject to the following conditions:
15 *
16 * The above copyright notice and this permission notice shall be included in
17 * all copies or substantial portions of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
22 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
23 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
24 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
25 * THE SOFTWARE.
26 */
27
28 #include "qemu/osdep.h"
29 #include "qemu/error-report.h"
30 #include "qapi/error.h"
31 #include "cpu.h"
32 #include "hw/sysbus.h"
33 #include "net/net.h"
34 #include "sysemu/reset.h"
35 #include "sysemu/sysemu.h"
36 #include "hw/boards.h"
37 #include "hw/loader.h"
38 #include "hw/char/serial.h"
39 #include "exec/address-spaces.h"
40 #include "elf.h"
41
42 #define PHYS_MEM_BASE 0x80000000
43 #define FIRMWARE_BASE 0x1000
44 #define FIRMWARE_SIZE (128 * 0x1000)
45
46 typedef struct {
47 uint64_t ram_size;
48 const char *kernel_filename;
49 const char *kernel_cmdline;
50 const char *initrd_filename;
51 } LoaderParams;
52
53 static void load_kernel(MoxieCPU *cpu, LoaderParams *loader_params)
54 {
55 uint64_t entry, kernel_high;
56 int64_t initrd_size;
57 long kernel_size;
58 ram_addr_t initrd_offset;
59
60 kernel_size = load_elf(loader_params->kernel_filename, NULL, NULL, NULL,
61 &entry, NULL, &kernel_high, NULL, 1, EM_MOXIE,
62 0, 0);
63
64 if (kernel_size <= 0) {
65 error_report("could not load kernel '%s'",
66 loader_params->kernel_filename);
67 exit(1);
68 }
69
70 /* load initrd */
71 initrd_size = 0;
72 initrd_offset = 0;
73 if (loader_params->initrd_filename) {
74 initrd_size = get_image_size(loader_params->initrd_filename);
75 if (initrd_size > 0) {
76 initrd_offset = (kernel_high + ~TARGET_PAGE_MASK)
77 & TARGET_PAGE_MASK;
78 if (initrd_offset + initrd_size > loader_params->ram_size) {
79 error_report("memory too small for initial ram disk '%s'",
80 loader_params->initrd_filename);
81 exit(1);
82 }
83 initrd_size = load_image_targphys(loader_params->initrd_filename,
84 initrd_offset,
85 ram_size);
86 }
87 if (initrd_size == (target_ulong)-1) {
88 error_report("could not load initial ram disk '%s'",
89 loader_params->initrd_filename);
90 exit(1);
91 }
92 }
93 }
94
95 static void main_cpu_reset(void *opaque)
96 {
97 MoxieCPU *cpu = opaque;
98
99 cpu_reset(CPU(cpu));
100 }
101
102 static void moxiesim_init(MachineState *machine)
103 {
104 MoxieCPU *cpu = NULL;
105 ram_addr_t ram_size = machine->ram_size;
106 const char *kernel_filename = machine->kernel_filename;
107 const char *kernel_cmdline = machine->kernel_cmdline;
108 const char *initrd_filename = machine->initrd_filename;
109 CPUMoxieState *env;
110 MemoryRegion *address_space_mem = get_system_memory();
111 MemoryRegion *ram = g_new(MemoryRegion, 1);
112 MemoryRegion *rom = g_new(MemoryRegion, 1);
113 hwaddr ram_base = 0x200000;
114 LoaderParams loader_params;
115
116 /* Init CPUs. */
117 cpu = MOXIE_CPU(cpu_create(machine->cpu_type));
118 env = &cpu->env;
119
120 qemu_register_reset(main_cpu_reset, cpu);
121
122 /* Allocate RAM. */
123 memory_region_init_ram(ram, NULL, "moxiesim.ram", ram_size, &error_fatal);
124 memory_region_add_subregion(address_space_mem, ram_base, ram);
125
126 memory_region_init_ram(rom, NULL, "moxie.rom", FIRMWARE_SIZE, &error_fatal);
127 memory_region_add_subregion(get_system_memory(), FIRMWARE_BASE, rom);
128
129 if (kernel_filename) {
130 loader_params.ram_size = ram_size;
131 loader_params.kernel_filename = kernel_filename;
132 loader_params.kernel_cmdline = kernel_cmdline;
133 loader_params.initrd_filename = initrd_filename;
134 load_kernel(cpu, &loader_params);
135 }
136 if (bios_name) {
137 if (load_image_targphys(bios_name, FIRMWARE_BASE, FIRMWARE_SIZE) < 0) {
138 error_report("Failed to load firmware '%s'", bios_name);
139 }
140 }
141
142 /* A single 16450 sits at offset 0x3f8. */
143 if (serial_hd(0)) {
144 serial_mm_init(address_space_mem, 0x3f8, 0, env->irq[4],
145 8000000/16, serial_hd(0), DEVICE_LITTLE_ENDIAN);
146 }
147 }
148
149 static void moxiesim_machine_init(MachineClass *mc)
150 {
151 mc->desc = "Moxie simulator platform";
152 mc->init = moxiesim_init;
153 mc->is_default = true;
154 mc->default_cpu_type = MOXIE_CPU_TYPE_NAME("MoxieLite");
155 }
156
157 DEFINE_MACHINE("moxiesim", moxiesim_machine_init)