root / hw / leon3.c @ 416343b1
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1 | b04d9890 | Fabien Chouteau | /*
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2 | b04d9890 | Fabien Chouteau | * QEMU Leon3 System Emulator
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3 | b04d9890 | Fabien Chouteau | *
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4 | b04d9890 | Fabien Chouteau | * Copyright (c) 2010-2011 AdaCore
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5 | b04d9890 | Fabien Chouteau | *
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6 | b04d9890 | Fabien Chouteau | * Permission is hereby granted, free of charge, to any person obtaining a copy
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7 | b04d9890 | Fabien Chouteau | * of this software and associated documentation files (the "Software"), to deal
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8 | b04d9890 | Fabien Chouteau | * in the Software without restriction, including without limitation the rights
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9 | b04d9890 | Fabien Chouteau | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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10 | b04d9890 | Fabien Chouteau | * copies of the Software, and to permit persons to whom the Software is
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11 | b04d9890 | Fabien Chouteau | * furnished to do so, subject to the following conditions:
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12 | b04d9890 | Fabien Chouteau | *
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13 | b04d9890 | Fabien Chouteau | * The above copyright notice and this permission notice shall be included in
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14 | b04d9890 | Fabien Chouteau | * all copies or substantial portions of the Software.
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15 | b04d9890 | Fabien Chouteau | *
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16 | b04d9890 | Fabien Chouteau | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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17 | b04d9890 | Fabien Chouteau | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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18 | b04d9890 | Fabien Chouteau | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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19 | b04d9890 | Fabien Chouteau | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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20 | b04d9890 | Fabien Chouteau | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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21 | b04d9890 | Fabien Chouteau | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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22 | b04d9890 | Fabien Chouteau | * THE SOFTWARE.
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23 | b04d9890 | Fabien Chouteau | */
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24 | b04d9890 | Fabien Chouteau | #include "hw.h" |
25 | b04d9890 | Fabien Chouteau | #include "qemu-timer.h" |
26 | b04d9890 | Fabien Chouteau | #include "qemu-char.h" |
27 | b04d9890 | Fabien Chouteau | #include "sysemu.h" |
28 | b04d9890 | Fabien Chouteau | #include "boards.h" |
29 | b04d9890 | Fabien Chouteau | #include "loader.h" |
30 | b04d9890 | Fabien Chouteau | #include "elf.h" |
31 | b04d9890 | Fabien Chouteau | #include "trace.h" |
32 | a4911d64 | Avi Kivity | #include "exec-memory.h" |
33 | b04d9890 | Fabien Chouteau | |
34 | b04d9890 | Fabien Chouteau | #include "grlib.h" |
35 | b04d9890 | Fabien Chouteau | |
36 | b04d9890 | Fabien Chouteau | /* Default system clock. */
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37 | b04d9890 | Fabien Chouteau | #define CPU_CLK (40 * 1000 * 1000) |
38 | b04d9890 | Fabien Chouteau | |
39 | b04d9890 | Fabien Chouteau | #define PROM_FILENAME "u-boot.bin" |
40 | b04d9890 | Fabien Chouteau | |
41 | b04d9890 | Fabien Chouteau | #define MAX_PILS 16 |
42 | b04d9890 | Fabien Chouteau | |
43 | b04d9890 | Fabien Chouteau | typedef struct ResetData { |
44 | b04d9890 | Fabien Chouteau | CPUState *env; |
45 | b04d9890 | Fabien Chouteau | uint32_t entry; /* save kernel entry in case of reset */
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46 | b04d9890 | Fabien Chouteau | } ResetData; |
47 | b04d9890 | Fabien Chouteau | |
48 | b04d9890 | Fabien Chouteau | static void main_cpu_reset(void *opaque) |
49 | b04d9890 | Fabien Chouteau | { |
50 | b04d9890 | Fabien Chouteau | ResetData *s = (ResetData *)opaque; |
51 | b04d9890 | Fabien Chouteau | CPUState *env = s->env; |
52 | b04d9890 | Fabien Chouteau | |
53 | b04d9890 | Fabien Chouteau | cpu_reset(env); |
54 | b04d9890 | Fabien Chouteau | |
55 | b04d9890 | Fabien Chouteau | env->halted = 0;
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56 | b04d9890 | Fabien Chouteau | env->pc = s->entry; |
57 | b04d9890 | Fabien Chouteau | env->npc = s->entry + 4;
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58 | b04d9890 | Fabien Chouteau | } |
59 | b04d9890 | Fabien Chouteau | |
60 | 60f356e8 | Fabien Chouteau | void leon3_irq_ack(void *irq_manager, int intno) |
61 | b04d9890 | Fabien Chouteau | { |
62 | b04d9890 | Fabien Chouteau | grlib_irqmp_ack((DeviceState *)irq_manager, intno); |
63 | b04d9890 | Fabien Chouteau | } |
64 | b04d9890 | Fabien Chouteau | |
65 | b04d9890 | Fabien Chouteau | static void leon3_set_pil_in(void *opaque, uint32_t pil_in) |
66 | b04d9890 | Fabien Chouteau | { |
67 | b04d9890 | Fabien Chouteau | CPUState *env = (CPUState *)opaque; |
68 | b04d9890 | Fabien Chouteau | |
69 | b04d9890 | Fabien Chouteau | assert(env != NULL);
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70 | b04d9890 | Fabien Chouteau | |
71 | b04d9890 | Fabien Chouteau | env->pil_in = pil_in; |
72 | b04d9890 | Fabien Chouteau | |
73 | b04d9890 | Fabien Chouteau | if (env->pil_in && (env->interrupt_index == 0 || |
74 | b04d9890 | Fabien Chouteau | (env->interrupt_index & ~15) == TT_EXTINT)) {
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75 | b04d9890 | Fabien Chouteau | unsigned int i; |
76 | b04d9890 | Fabien Chouteau | |
77 | b04d9890 | Fabien Chouteau | for (i = 15; i > 0; i--) { |
78 | b04d9890 | Fabien Chouteau | if (env->pil_in & (1 << i)) { |
79 | b04d9890 | Fabien Chouteau | int old_interrupt = env->interrupt_index;
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80 | b04d9890 | Fabien Chouteau | |
81 | b04d9890 | Fabien Chouteau | env->interrupt_index = TT_EXTINT | i; |
82 | b04d9890 | Fabien Chouteau | if (old_interrupt != env->interrupt_index) {
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83 | b04d9890 | Fabien Chouteau | trace_leon3_set_irq(i); |
84 | b04d9890 | Fabien Chouteau | cpu_interrupt(env, CPU_INTERRUPT_HARD); |
85 | b04d9890 | Fabien Chouteau | } |
86 | b04d9890 | Fabien Chouteau | break;
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87 | b04d9890 | Fabien Chouteau | } |
88 | b04d9890 | Fabien Chouteau | } |
89 | b04d9890 | Fabien Chouteau | } else if (!env->pil_in && (env->interrupt_index & ~15) == TT_EXTINT) { |
90 | b04d9890 | Fabien Chouteau | trace_leon3_reset_irq(env->interrupt_index & 15);
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91 | b04d9890 | Fabien Chouteau | env->interrupt_index = 0;
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92 | b04d9890 | Fabien Chouteau | cpu_reset_interrupt(env, CPU_INTERRUPT_HARD); |
93 | b04d9890 | Fabien Chouteau | } |
94 | b04d9890 | Fabien Chouteau | } |
95 | b04d9890 | Fabien Chouteau | |
96 | b04d9890 | Fabien Chouteau | static void leon3_generic_hw_init(ram_addr_t ram_size, |
97 | b04d9890 | Fabien Chouteau | const char *boot_device, |
98 | b04d9890 | Fabien Chouteau | const char *kernel_filename, |
99 | b04d9890 | Fabien Chouteau | const char *kernel_cmdline, |
100 | b04d9890 | Fabien Chouteau | const char *initrd_filename, |
101 | b04d9890 | Fabien Chouteau | const char *cpu_model) |
102 | b04d9890 | Fabien Chouteau | { |
103 | b04d9890 | Fabien Chouteau | CPUState *env; |
104 | a4911d64 | Avi Kivity | MemoryRegion *address_space_mem = get_system_memory(); |
105 | a4911d64 | Avi Kivity | MemoryRegion *ram = g_new(MemoryRegion, 1);
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106 | a4911d64 | Avi Kivity | MemoryRegion *prom = g_new(MemoryRegion, 1);
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107 | b04d9890 | Fabien Chouteau | int ret;
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108 | b04d9890 | Fabien Chouteau | char *filename;
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109 | b04d9890 | Fabien Chouteau | qemu_irq *cpu_irqs = NULL;
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110 | b04d9890 | Fabien Chouteau | int bios_size;
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111 | b04d9890 | Fabien Chouteau | int prom_size;
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112 | b04d9890 | Fabien Chouteau | ResetData *reset_info; |
113 | b04d9890 | Fabien Chouteau | |
114 | b04d9890 | Fabien Chouteau | /* Init CPU */
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115 | b04d9890 | Fabien Chouteau | if (!cpu_model) {
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116 | b04d9890 | Fabien Chouteau | cpu_model = "LEON3";
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117 | b04d9890 | Fabien Chouteau | } |
118 | b04d9890 | Fabien Chouteau | |
119 | b04d9890 | Fabien Chouteau | env = cpu_init(cpu_model); |
120 | b04d9890 | Fabien Chouteau | if (!env) {
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121 | b04d9890 | Fabien Chouteau | fprintf(stderr, "qemu: Unable to find Sparc CPU definition\n");
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122 | b04d9890 | Fabien Chouteau | exit(1);
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123 | b04d9890 | Fabien Chouteau | } |
124 | b04d9890 | Fabien Chouteau | |
125 | b04d9890 | Fabien Chouteau | cpu_sparc_set_id(env, 0);
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126 | b04d9890 | Fabien Chouteau | |
127 | b04d9890 | Fabien Chouteau | /* Reset data */
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128 | 7267c094 | Anthony Liguori | reset_info = g_malloc0(sizeof(ResetData));
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129 | b04d9890 | Fabien Chouteau | reset_info->env = env; |
130 | b04d9890 | Fabien Chouteau | qemu_register_reset(main_cpu_reset, reset_info); |
131 | b04d9890 | Fabien Chouteau | |
132 | b04d9890 | Fabien Chouteau | /* Allocate IRQ manager */
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133 | b04d9890 | Fabien Chouteau | grlib_irqmp_create(0x80000200, env, &cpu_irqs, MAX_PILS, &leon3_set_pil_in);
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134 | b04d9890 | Fabien Chouteau | |
135 | 60f356e8 | Fabien Chouteau | env->qemu_irq_ack = leon3_irq_manager; |
136 | b04d9890 | Fabien Chouteau | |
137 | b04d9890 | Fabien Chouteau | /* Allocate RAM */
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138 | b04d9890 | Fabien Chouteau | if ((uint64_t)ram_size > (1UL << 30)) { |
139 | b04d9890 | Fabien Chouteau | fprintf(stderr, |
140 | b04d9890 | Fabien Chouteau | "qemu: Too much memory for this machine: %d, maximum 1G\n",
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141 | b04d9890 | Fabien Chouteau | (unsigned int)(ram_size / (1024 * 1024))); |
142 | b04d9890 | Fabien Chouteau | exit(1);
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143 | b04d9890 | Fabien Chouteau | } |
144 | b04d9890 | Fabien Chouteau | |
145 | a4911d64 | Avi Kivity | memory_region_init_ram(ram, NULL, "leon3.ram", ram_size); |
146 | a4911d64 | Avi Kivity | memory_region_add_subregion(address_space_mem, 0x40000000, ram);
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147 | b04d9890 | Fabien Chouteau | |
148 | b04d9890 | Fabien Chouteau | /* Allocate BIOS */
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149 | b04d9890 | Fabien Chouteau | prom_size = 8 * 1024 * 1024; /* 8Mb */ |
150 | a4911d64 | Avi Kivity | memory_region_init_ram(prom, NULL, "Leon3.bios", prom_size); |
151 | a4911d64 | Avi Kivity | memory_region_set_readonly(prom, true);
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152 | a4911d64 | Avi Kivity | memory_region_add_subregion(address_space_mem, 0x00000000, prom);
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153 | b04d9890 | Fabien Chouteau | |
154 | b04d9890 | Fabien Chouteau | /* Load boot prom */
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155 | b04d9890 | Fabien Chouteau | if (bios_name == NULL) { |
156 | b04d9890 | Fabien Chouteau | bios_name = PROM_FILENAME; |
157 | b04d9890 | Fabien Chouteau | } |
158 | b04d9890 | Fabien Chouteau | filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); |
159 | b04d9890 | Fabien Chouteau | |
160 | b04d9890 | Fabien Chouteau | bios_size = get_image_size(filename); |
161 | b04d9890 | Fabien Chouteau | |
162 | b04d9890 | Fabien Chouteau | if (bios_size > prom_size) {
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163 | b04d9890 | Fabien Chouteau | fprintf(stderr, "qemu: could not load prom '%s': file too big\n",
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164 | b04d9890 | Fabien Chouteau | filename); |
165 | b04d9890 | Fabien Chouteau | exit(1);
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166 | b04d9890 | Fabien Chouteau | } |
167 | b04d9890 | Fabien Chouteau | |
168 | b04d9890 | Fabien Chouteau | if (bios_size > 0) { |
169 | b04d9890 | Fabien Chouteau | ret = load_image_targphys(filename, 0x00000000, bios_size);
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170 | b04d9890 | Fabien Chouteau | if (ret < 0 || ret > prom_size) { |
171 | b04d9890 | Fabien Chouteau | fprintf(stderr, "qemu: could not load prom '%s'\n", filename);
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172 | b04d9890 | Fabien Chouteau | exit(1);
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173 | b04d9890 | Fabien Chouteau | } |
174 | b04d9890 | Fabien Chouteau | } else if (kernel_filename == NULL) { |
175 | b04d9890 | Fabien Chouteau | fprintf(stderr, "Can't read bios image %s\n", filename);
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176 | b04d9890 | Fabien Chouteau | exit(1);
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177 | b04d9890 | Fabien Chouteau | } |
178 | b04d9890 | Fabien Chouteau | |
179 | b04d9890 | Fabien Chouteau | /* Can directly load an application. */
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180 | b04d9890 | Fabien Chouteau | if (kernel_filename != NULL) { |
181 | b04d9890 | Fabien Chouteau | long kernel_size;
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182 | b04d9890 | Fabien Chouteau | uint64_t entry; |
183 | b04d9890 | Fabien Chouteau | |
184 | b04d9890 | Fabien Chouteau | kernel_size = load_elf(kernel_filename, NULL, NULL, &entry, NULL, NULL, |
185 | b04d9890 | Fabien Chouteau | 1 /* big endian */, ELF_MACHINE, 0); |
186 | b04d9890 | Fabien Chouteau | if (kernel_size < 0) { |
187 | b04d9890 | Fabien Chouteau | fprintf(stderr, "qemu: could not load kernel '%s'\n",
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188 | b04d9890 | Fabien Chouteau | kernel_filename); |
189 | b04d9890 | Fabien Chouteau | exit(1);
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190 | b04d9890 | Fabien Chouteau | } |
191 | b04d9890 | Fabien Chouteau | if (bios_size <= 0) { |
192 | b04d9890 | Fabien Chouteau | /* If there is no bios/monitor, start the application. */
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193 | b04d9890 | Fabien Chouteau | env->pc = entry; |
194 | b04d9890 | Fabien Chouteau | env->npc = entry + 4;
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195 | b04d9890 | Fabien Chouteau | reset_info->entry = entry; |
196 | b04d9890 | Fabien Chouteau | } |
197 | b04d9890 | Fabien Chouteau | } |
198 | b04d9890 | Fabien Chouteau | |
199 | b04d9890 | Fabien Chouteau | /* Allocate timers */
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200 | b04d9890 | Fabien Chouteau | grlib_gptimer_create(0x80000300, 2, CPU_CLK, cpu_irqs, 6); |
201 | b04d9890 | Fabien Chouteau | |
202 | b04d9890 | Fabien Chouteau | /* Allocate uart */
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203 | b04d9890 | Fabien Chouteau | if (serial_hds[0]) { |
204 | b04d9890 | Fabien Chouteau | grlib_apbuart_create(0x80000100, serial_hds[0], cpu_irqs[3]); |
205 | b04d9890 | Fabien Chouteau | } |
206 | b04d9890 | Fabien Chouteau | } |
207 | b04d9890 | Fabien Chouteau | |
208 | b04d9890 | Fabien Chouteau | QEMUMachine leon3_generic_machine = { |
209 | b04d9890 | Fabien Chouteau | .name = "leon3_generic",
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210 | b04d9890 | Fabien Chouteau | .desc = "Leon-3 generic",
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211 | b04d9890 | Fabien Chouteau | .init = leon3_generic_hw_init, |
212 | b04d9890 | Fabien Chouteau | .use_scsi = 0,
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213 | b04d9890 | Fabien Chouteau | }; |
214 | b04d9890 | Fabien Chouteau | |
215 | b04d9890 | Fabien Chouteau | static void leon3_machine_init(void) |
216 | b04d9890 | Fabien Chouteau | { |
217 | b04d9890 | Fabien Chouteau | qemu_register_machine(&leon3_generic_machine); |
218 | b04d9890 | Fabien Chouteau | } |
219 | b04d9890 | Fabien Chouteau | |
220 | b04d9890 | Fabien Chouteau | machine_init(leon3_machine_init); |