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b04d9890 FC |
1 | /* |
2 | * QEMU Leon3 System Emulator | |
3 | * | |
4 | * Copyright (c) 2010-2011 AdaCore | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
83c9f4ca | 24 | #include "hw/hw.h" |
1de7afc9 | 25 | #include "qemu/timer.h" |
83c9f4ca | 26 | #include "hw/ptimer.h" |
dccfcd0e | 27 | #include "sysemu/char.h" |
9c17d615 | 28 | #include "sysemu/sysemu.h" |
77612541 | 29 | #include "sysemu/qtest.h" |
83c9f4ca PB |
30 | #include "hw/boards.h" |
31 | #include "hw/loader.h" | |
b04d9890 FC |
32 | #include "elf.h" |
33 | #include "trace.h" | |
022c62cb | 34 | #include "exec/address-spaces.h" |
b04d9890 | 35 | |
0d09e41a | 36 | #include "hw/sparc/grlib.h" |
b04d9890 FC |
37 | |
38 | /* Default system clock. */ | |
39 | #define CPU_CLK (40 * 1000 * 1000) | |
40 | ||
41 | #define PROM_FILENAME "u-boot.bin" | |
42 | ||
43 | #define MAX_PILS 16 | |
44 | ||
45 | typedef struct ResetData { | |
c537d79c | 46 | SPARCCPU *cpu; |
b04d9890 FC |
47 | uint32_t entry; /* save kernel entry in case of reset */ |
48 | } ResetData; | |
49 | ||
50 | static void main_cpu_reset(void *opaque) | |
51 | { | |
52 | ResetData *s = (ResetData *)opaque; | |
259186a7 | 53 | CPUState *cpu = CPU(s->cpu); |
c537d79c | 54 | CPUSPARCState *env = &s->cpu->env; |
b04d9890 | 55 | |
259186a7 | 56 | cpu_reset(cpu); |
b04d9890 | 57 | |
259186a7 | 58 | cpu->halted = 0; |
b04d9890 FC |
59 | env->pc = s->entry; |
60 | env->npc = s->entry + 4; | |
61 | } | |
62 | ||
60f356e8 | 63 | void leon3_irq_ack(void *irq_manager, int intno) |
b04d9890 FC |
64 | { |
65 | grlib_irqmp_ack((DeviceState *)irq_manager, intno); | |
b04d9890 FC |
66 | } |
67 | ||
68 | static void leon3_set_pil_in(void *opaque, uint32_t pil_in) | |
69 | { | |
98cec4a2 | 70 | CPUSPARCState *env = (CPUSPARCState *)opaque; |
d8ed887b | 71 | CPUState *cs; |
b04d9890 FC |
72 | |
73 | assert(env != NULL); | |
74 | ||
75 | env->pil_in = pil_in; | |
76 | ||
77 | if (env->pil_in && (env->interrupt_index == 0 || | |
78 | (env->interrupt_index & ~15) == TT_EXTINT)) { | |
79 | unsigned int i; | |
80 | ||
81 | for (i = 15; i > 0; i--) { | |
82 | if (env->pil_in & (1 << i)) { | |
83 | int old_interrupt = env->interrupt_index; | |
84 | ||
85 | env->interrupt_index = TT_EXTINT | i; | |
86 | if (old_interrupt != env->interrupt_index) { | |
c3affe56 | 87 | cs = CPU(sparc_env_get_cpu(env)); |
b04d9890 | 88 | trace_leon3_set_irq(i); |
c3affe56 | 89 | cpu_interrupt(cs, CPU_INTERRUPT_HARD); |
b04d9890 FC |
90 | } |
91 | break; | |
92 | } | |
93 | } | |
94 | } else if (!env->pil_in && (env->interrupt_index & ~15) == TT_EXTINT) { | |
d8ed887b | 95 | cs = CPU(sparc_env_get_cpu(env)); |
b04d9890 FC |
96 | trace_leon3_reset_irq(env->interrupt_index & 15); |
97 | env->interrupt_index = 0; | |
d8ed887b | 98 | cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD); |
b04d9890 FC |
99 | } |
100 | } | |
101 | ||
5f072e1f | 102 | static void leon3_generic_hw_init(QEMUMachineInitArgs *args) |
b04d9890 | 103 | { |
5f072e1f EH |
104 | ram_addr_t ram_size = args->ram_size; |
105 | const char *cpu_model = args->cpu_model; | |
106 | const char *kernel_filename = args->kernel_filename; | |
60ad0733 | 107 | SPARCCPU *cpu; |
98cec4a2 | 108 | CPUSPARCState *env; |
a4911d64 AK |
109 | MemoryRegion *address_space_mem = get_system_memory(); |
110 | MemoryRegion *ram = g_new(MemoryRegion, 1); | |
111 | MemoryRegion *prom = g_new(MemoryRegion, 1); | |
b04d9890 FC |
112 | int ret; |
113 | char *filename; | |
114 | qemu_irq *cpu_irqs = NULL; | |
115 | int bios_size; | |
116 | int prom_size; | |
117 | ResetData *reset_info; | |
118 | ||
119 | /* Init CPU */ | |
120 | if (!cpu_model) { | |
121 | cpu_model = "LEON3"; | |
122 | } | |
123 | ||
60ad0733 AF |
124 | cpu = cpu_sparc_init(cpu_model); |
125 | if (cpu == NULL) { | |
b04d9890 FC |
126 | fprintf(stderr, "qemu: Unable to find Sparc CPU definition\n"); |
127 | exit(1); | |
128 | } | |
60ad0733 | 129 | env = &cpu->env; |
b04d9890 FC |
130 | |
131 | cpu_sparc_set_id(env, 0); | |
132 | ||
133 | /* Reset data */ | |
7267c094 | 134 | reset_info = g_malloc0(sizeof(ResetData)); |
c537d79c | 135 | reset_info->cpu = cpu; |
b04d9890 FC |
136 | qemu_register_reset(main_cpu_reset, reset_info); |
137 | ||
138 | /* Allocate IRQ manager */ | |
139 | grlib_irqmp_create(0x80000200, env, &cpu_irqs, MAX_PILS, &leon3_set_pil_in); | |
140 | ||
60f356e8 | 141 | env->qemu_irq_ack = leon3_irq_manager; |
b04d9890 FC |
142 | |
143 | /* Allocate RAM */ | |
144 | if ((uint64_t)ram_size > (1UL << 30)) { | |
145 | fprintf(stderr, | |
146 | "qemu: Too much memory for this machine: %d, maximum 1G\n", | |
147 | (unsigned int)(ram_size / (1024 * 1024))); | |
148 | exit(1); | |
149 | } | |
150 | ||
2c9b15ca | 151 | memory_region_init_ram(ram, NULL, "leon3.ram", ram_size); |
c5705a77 | 152 | vmstate_register_ram_global(ram); |
a4911d64 | 153 | memory_region_add_subregion(address_space_mem, 0x40000000, ram); |
b04d9890 FC |
154 | |
155 | /* Allocate BIOS */ | |
156 | prom_size = 8 * 1024 * 1024; /* 8Mb */ | |
2c9b15ca | 157 | memory_region_init_ram(prom, NULL, "Leon3.bios", prom_size); |
c5705a77 | 158 | vmstate_register_ram_global(prom); |
a4911d64 AK |
159 | memory_region_set_readonly(prom, true); |
160 | memory_region_add_subregion(address_space_mem, 0x00000000, prom); | |
b04d9890 FC |
161 | |
162 | /* Load boot prom */ | |
163 | if (bios_name == NULL) { | |
164 | bios_name = PROM_FILENAME; | |
165 | } | |
166 | filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); | |
167 | ||
168 | bios_size = get_image_size(filename); | |
169 | ||
170 | if (bios_size > prom_size) { | |
171 | fprintf(stderr, "qemu: could not load prom '%s': file too big\n", | |
172 | filename); | |
173 | exit(1); | |
174 | } | |
175 | ||
176 | if (bios_size > 0) { | |
177 | ret = load_image_targphys(filename, 0x00000000, bios_size); | |
178 | if (ret < 0 || ret > prom_size) { | |
179 | fprintf(stderr, "qemu: could not load prom '%s'\n", filename); | |
180 | exit(1); | |
181 | } | |
77612541 | 182 | } else if (kernel_filename == NULL && !qtest_enabled()) { |
b04d9890 FC |
183 | fprintf(stderr, "Can't read bios image %s\n", filename); |
184 | exit(1); | |
185 | } | |
186 | ||
187 | /* Can directly load an application. */ | |
188 | if (kernel_filename != NULL) { | |
189 | long kernel_size; | |
190 | uint64_t entry; | |
191 | ||
192 | kernel_size = load_elf(kernel_filename, NULL, NULL, &entry, NULL, NULL, | |
193 | 1 /* big endian */, ELF_MACHINE, 0); | |
194 | if (kernel_size < 0) { | |
195 | fprintf(stderr, "qemu: could not load kernel '%s'\n", | |
196 | kernel_filename); | |
197 | exit(1); | |
198 | } | |
199 | if (bios_size <= 0) { | |
200 | /* If there is no bios/monitor, start the application. */ | |
201 | env->pc = entry; | |
202 | env->npc = entry + 4; | |
203 | reset_info->entry = entry; | |
204 | } | |
205 | } | |
206 | ||
207 | /* Allocate timers */ | |
208 | grlib_gptimer_create(0x80000300, 2, CPU_CLK, cpu_irqs, 6); | |
209 | ||
210 | /* Allocate uart */ | |
211 | if (serial_hds[0]) { | |
212 | grlib_apbuart_create(0x80000100, serial_hds[0], cpu_irqs[3]); | |
213 | } | |
214 | } | |
215 | ||
da665c99 | 216 | static QEMUMachine leon3_generic_machine = { |
b04d9890 FC |
217 | .name = "leon3_generic", |
218 | .desc = "Leon-3 generic", | |
219 | .init = leon3_generic_hw_init, | |
b04d9890 FC |
220 | }; |
221 | ||
222 | static void leon3_machine_init(void) | |
223 | { | |
224 | qemu_register_machine(&leon3_generic_machine); | |
225 | } | |
226 | ||
227 | machine_init(leon3_machine_init); |