Kill redundant declarion of perror()
[qemu-kvm/fedora.git] / hw / mips_mipssim.c
blob83f1a63e5c25c3902c947972069caa5823444084
1 /*
2 * QEMU/mipssim emulation
4 * Emulates a very simple machine model similiar to the one use by the
5 * proprietary MIPS emulator.
6 *
7 * Copyright (c) 2007 Thiemo Seufer
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:
16 * The above copyright notice and this permission notice shall be included in
17 * all copies or substantial portions of the Software.
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.
27 #include "hw.h"
28 #include "mips.h"
29 #include "pc.h"
30 #include "isa.h"
31 #include "net.h"
32 #include "sysemu.h"
33 #include "boards.h"
35 #ifdef TARGET_WORDS_BIGENDIAN
36 #define BIOS_FILENAME "mips_bios.bin"
37 #else
38 #define BIOS_FILENAME "mipsel_bios.bin"
39 #endif
41 #ifdef TARGET_MIPS64
42 #define PHYS_TO_VIRT(x) ((x) | ~0x7fffffffULL)
43 #else
44 #define PHYS_TO_VIRT(x) ((x) | ~0x7fffffffU)
45 #endif
47 #define VIRT_TO_PHYS_ADDEND (-((int64_t)(int32_t)0x80000000))
49 static struct _loaderparams {
50 int ram_size;
51 const char *kernel_filename;
52 const char *kernel_cmdline;
53 const char *initrd_filename;
54 } loaderparams;
56 static void load_kernel (CPUState *env)
58 int64_t entry, kernel_low, kernel_high;
59 long kernel_size;
60 long initrd_size;
61 ram_addr_t initrd_offset;
63 kernel_size = load_elf(loaderparams.kernel_filename, VIRT_TO_PHYS_ADDEND,
64 (uint64_t *)&entry, (uint64_t *)&kernel_low,
65 (uint64_t *)&kernel_high);
66 if (kernel_size >= 0) {
67 if ((entry & ~0x7fffffffULL) == 0x80000000)
68 entry = (int32_t)entry;
69 env->active_tc.PC = entry;
70 } else {
71 fprintf(stderr, "qemu: could not load kernel '%s'\n",
72 loaderparams.kernel_filename);
73 exit(1);
76 /* load initrd */
77 initrd_size = 0;
78 initrd_offset = 0;
79 if (loaderparams.initrd_filename) {
80 initrd_size = get_image_size (loaderparams.initrd_filename);
81 if (initrd_size > 0) {
82 initrd_offset = (kernel_high + ~TARGET_PAGE_MASK) & TARGET_PAGE_MASK;
83 if (initrd_offset + initrd_size > loaderparams.ram_size) {
84 fprintf(stderr,
85 "qemu: memory too small for initial ram disk '%s'\n",
86 loaderparams.initrd_filename);
87 exit(1);
89 initrd_size = load_image(loaderparams.initrd_filename,
90 phys_ram_base + initrd_offset);
92 if (initrd_size == (target_ulong) -1) {
93 fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
94 loaderparams.initrd_filename);
95 exit(1);
100 static void main_cpu_reset(void *opaque)
102 CPUState *env = opaque;
103 cpu_reset(env);
105 if (loaderparams.kernel_filename)
106 load_kernel (env);
109 static void
110 mips_mipssim_init (ram_addr_t ram_size, int vga_ram_size,
111 const char *boot_device, DisplayState *ds,
112 const char *kernel_filename, const char *kernel_cmdline,
113 const char *initrd_filename, const char *cpu_model)
115 char buf[1024];
116 unsigned long bios_offset;
117 CPUState *env;
118 int bios_size;
120 /* Init CPUs. */
121 if (cpu_model == NULL) {
122 #ifdef TARGET_MIPS64
123 cpu_model = "5Kf";
124 #else
125 cpu_model = "24Kf";
126 #endif
128 env = cpu_init(cpu_model);
129 if (!env) {
130 fprintf(stderr, "Unable to find CPU definition\n");
131 exit(1);
133 qemu_register_reset(main_cpu_reset, env);
135 /* Allocate RAM. */
136 cpu_register_physical_memory(0, ram_size, IO_MEM_RAM);
138 /* Load a BIOS / boot exception handler image. */
139 bios_offset = ram_size + vga_ram_size;
140 if (bios_name == NULL)
141 bios_name = BIOS_FILENAME;
142 snprintf(buf, sizeof(buf), "%s/%s", bios_dir, bios_name);
143 bios_size = load_image(buf, phys_ram_base + bios_offset);
144 if ((bios_size < 0 || bios_size > BIOS_SIZE) && !kernel_filename) {
145 /* Bail out if we have neither a kernel image nor boot vector code. */
146 fprintf(stderr,
147 "qemu: Could not load MIPS bios '%s', and no -kernel argument was specified\n",
148 buf);
149 exit(1);
150 } else {
151 /* Map the BIOS / boot exception handler. */
152 cpu_register_physical_memory(0x1fc00000LL,
153 bios_size, bios_offset | IO_MEM_ROM);
154 /* We have a boot vector start address. */
155 env->active_tc.PC = (target_long)(int32_t)0xbfc00000;
158 if (kernel_filename) {
159 loaderparams.ram_size = ram_size;
160 loaderparams.kernel_filename = kernel_filename;
161 loaderparams.kernel_cmdline = kernel_cmdline;
162 loaderparams.initrd_filename = initrd_filename;
163 load_kernel(env);
166 /* Init CPU internal devices. */
167 cpu_mips_irq_init_cpu(env);
168 cpu_mips_clock_init(env);
170 /* Register 64 KB of ISA IO space at 0x1fd00000. */
171 isa_mmio_init(0x1fd00000, 0x00010000);
173 /* A single 16450 sits at offset 0x3f8. It is attached to
174 MIPS CPU INT2, which is interrupt 4. */
175 if (serial_hds[0])
176 serial_init(0x3f8, env->irq[4], 115200, serial_hds[0]);
178 if (nd_table[0].vlan)
179 /* MIPSnet uses the MIPS CPU INT0, which is interrupt 2. */
180 mipsnet_init(0x4200, env->irq[2], &nd_table[0]);
183 QEMUMachine mips_mipssim_machine = {
184 .name = "mipssim",
185 .desc = "MIPS MIPSsim platform",
186 .init = mips_mipssim_init,
187 .ram_require = BIOS_SIZE + VGA_RAM_SIZE /* unused */,
188 .nodisk_ok = 1,