]>
Commit | Line | Data |
---|---|---|
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 | */ | |
db5ebe5f | 24 | #include "qemu/osdep.h" |
83c9f4ca | 25 | #include "hw/hw.h" |
1de7afc9 | 26 | #include "qemu/timer.h" |
83c9f4ca | 27 | #include "hw/ptimer.h" |
dccfcd0e | 28 | #include "sysemu/char.h" |
9c17d615 | 29 | #include "sysemu/sysemu.h" |
77612541 | 30 | #include "sysemu/qtest.h" |
83c9f4ca PB |
31 | #include "hw/boards.h" |
32 | #include "hw/loader.h" | |
b04d9890 FC |
33 | #include "elf.h" |
34 | #include "trace.h" | |
022c62cb | 35 | #include "exec/address-spaces.h" |
b04d9890 | 36 | |
0d09e41a | 37 | #include "hw/sparc/grlib.h" |
b04d9890 FC |
38 | |
39 | /* Default system clock. */ | |
40 | #define CPU_CLK (40 * 1000 * 1000) | |
41 | ||
42 | #define PROM_FILENAME "u-boot.bin" | |
43 | ||
44 | #define MAX_PILS 16 | |
45 | ||
46 | typedef struct ResetData { | |
c537d79c | 47 | SPARCCPU *cpu; |
b04d9890 | 48 | uint32_t entry; /* save kernel entry in case of reset */ |
c1570e2a | 49 | target_ulong sp; /* initial stack pointer */ |
b04d9890 FC |
50 | } ResetData; |
51 | ||
52 | static void main_cpu_reset(void *opaque) | |
53 | { | |
54 | ResetData *s = (ResetData *)opaque; | |
259186a7 | 55 | CPUState *cpu = CPU(s->cpu); |
c537d79c | 56 | CPUSPARCState *env = &s->cpu->env; |
b04d9890 | 57 | |
259186a7 | 58 | cpu_reset(cpu); |
b04d9890 | 59 | |
259186a7 | 60 | cpu->halted = 0; |
b04d9890 FC |
61 | env->pc = s->entry; |
62 | env->npc = s->entry + 4; | |
c1570e2a | 63 | env->regbase[6] = s->sp; |
b04d9890 FC |
64 | } |
65 | ||
60f356e8 | 66 | void leon3_irq_ack(void *irq_manager, int intno) |
b04d9890 FC |
67 | { |
68 | grlib_irqmp_ack((DeviceState *)irq_manager, intno); | |
b04d9890 FC |
69 | } |
70 | ||
71 | static void leon3_set_pil_in(void *opaque, uint32_t pil_in) | |
72 | { | |
98cec4a2 | 73 | CPUSPARCState *env = (CPUSPARCState *)opaque; |
d8ed887b | 74 | CPUState *cs; |
b04d9890 FC |
75 | |
76 | assert(env != NULL); | |
77 | ||
78 | env->pil_in = pil_in; | |
79 | ||
80 | if (env->pil_in && (env->interrupt_index == 0 || | |
81 | (env->interrupt_index & ~15) == TT_EXTINT)) { | |
82 | unsigned int i; | |
83 | ||
84 | for (i = 15; i > 0; i--) { | |
85 | if (env->pil_in & (1 << i)) { | |
86 | int old_interrupt = env->interrupt_index; | |
87 | ||
88 | env->interrupt_index = TT_EXTINT | i; | |
89 | if (old_interrupt != env->interrupt_index) { | |
c3affe56 | 90 | cs = CPU(sparc_env_get_cpu(env)); |
b04d9890 | 91 | trace_leon3_set_irq(i); |
c3affe56 | 92 | cpu_interrupt(cs, CPU_INTERRUPT_HARD); |
b04d9890 FC |
93 | } |
94 | break; | |
95 | } | |
96 | } | |
97 | } else if (!env->pil_in && (env->interrupt_index & ~15) == TT_EXTINT) { | |
d8ed887b | 98 | cs = CPU(sparc_env_get_cpu(env)); |
b04d9890 FC |
99 | trace_leon3_reset_irq(env->interrupt_index & 15); |
100 | env->interrupt_index = 0; | |
d8ed887b | 101 | cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD); |
b04d9890 FC |
102 | } |
103 | } | |
104 | ||
3ef96221 | 105 | static void leon3_generic_hw_init(MachineState *machine) |
b04d9890 | 106 | { |
3ef96221 MA |
107 | ram_addr_t ram_size = machine->ram_size; |
108 | const char *cpu_model = machine->cpu_model; | |
109 | const char *kernel_filename = machine->kernel_filename; | |
60ad0733 | 110 | SPARCCPU *cpu; |
98cec4a2 | 111 | CPUSPARCState *env; |
a4911d64 AK |
112 | MemoryRegion *address_space_mem = get_system_memory(); |
113 | MemoryRegion *ram = g_new(MemoryRegion, 1); | |
114 | MemoryRegion *prom = g_new(MemoryRegion, 1); | |
b04d9890 FC |
115 | int ret; |
116 | char *filename; | |
117 | qemu_irq *cpu_irqs = NULL; | |
118 | int bios_size; | |
119 | int prom_size; | |
120 | ResetData *reset_info; | |
121 | ||
122 | /* Init CPU */ | |
123 | if (!cpu_model) { | |
124 | cpu_model = "LEON3"; | |
125 | } | |
126 | ||
60ad0733 AF |
127 | cpu = cpu_sparc_init(cpu_model); |
128 | if (cpu == NULL) { | |
b04d9890 FC |
129 | fprintf(stderr, "qemu: Unable to find Sparc CPU definition\n"); |
130 | exit(1); | |
131 | } | |
60ad0733 | 132 | env = &cpu->env; |
b04d9890 FC |
133 | |
134 | cpu_sparc_set_id(env, 0); | |
135 | ||
136 | /* Reset data */ | |
7267c094 | 137 | reset_info = g_malloc0(sizeof(ResetData)); |
c537d79c | 138 | reset_info->cpu = cpu; |
c1570e2a | 139 | reset_info->sp = 0x40000000 + ram_size; |
b04d9890 FC |
140 | qemu_register_reset(main_cpu_reset, reset_info); |
141 | ||
142 | /* Allocate IRQ manager */ | |
143 | grlib_irqmp_create(0x80000200, env, &cpu_irqs, MAX_PILS, &leon3_set_pil_in); | |
144 | ||
60f356e8 | 145 | env->qemu_irq_ack = leon3_irq_manager; |
b04d9890 FC |
146 | |
147 | /* Allocate RAM */ | |
148 | if ((uint64_t)ram_size > (1UL << 30)) { | |
149 | fprintf(stderr, | |
150 | "qemu: Too much memory for this machine: %d, maximum 1G\n", | |
151 | (unsigned int)(ram_size / (1024 * 1024))); | |
152 | exit(1); | |
153 | } | |
154 | ||
8e7ba4ed | 155 | memory_region_allocate_system_memory(ram, NULL, "leon3.ram", ram_size); |
a4911d64 | 156 | memory_region_add_subregion(address_space_mem, 0x40000000, ram); |
b04d9890 FC |
157 | |
158 | /* Allocate BIOS */ | |
159 | prom_size = 8 * 1024 * 1024; /* 8Mb */ | |
f8ed85ac | 160 | memory_region_init_ram(prom, NULL, "Leon3.bios", prom_size, &error_fatal); |
c5705a77 | 161 | vmstate_register_ram_global(prom); |
a4911d64 AK |
162 | memory_region_set_readonly(prom, true); |
163 | memory_region_add_subregion(address_space_mem, 0x00000000, prom); | |
b04d9890 FC |
164 | |
165 | /* Load boot prom */ | |
166 | if (bios_name == NULL) { | |
167 | bios_name = PROM_FILENAME; | |
168 | } | |
169 | filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); | |
170 | ||
171 | bios_size = get_image_size(filename); | |
172 | ||
173 | if (bios_size > prom_size) { | |
174 | fprintf(stderr, "qemu: could not load prom '%s': file too big\n", | |
175 | filename); | |
176 | exit(1); | |
177 | } | |
178 | ||
179 | if (bios_size > 0) { | |
180 | ret = load_image_targphys(filename, 0x00000000, bios_size); | |
181 | if (ret < 0 || ret > prom_size) { | |
182 | fprintf(stderr, "qemu: could not load prom '%s'\n", filename); | |
183 | exit(1); | |
184 | } | |
77612541 | 185 | } else if (kernel_filename == NULL && !qtest_enabled()) { |
b04d9890 FC |
186 | fprintf(stderr, "Can't read bios image %s\n", filename); |
187 | exit(1); | |
188 | } | |
d71cdbfd | 189 | g_free(filename); |
b04d9890 FC |
190 | |
191 | /* Can directly load an application. */ | |
192 | if (kernel_filename != NULL) { | |
193 | long kernel_size; | |
194 | uint64_t entry; | |
195 | ||
196 | kernel_size = load_elf(kernel_filename, NULL, NULL, &entry, NULL, NULL, | |
77452383 | 197 | 1 /* big endian */, EM_SPARC, 0); |
b04d9890 FC |
198 | if (kernel_size < 0) { |
199 | fprintf(stderr, "qemu: could not load kernel '%s'\n", | |
200 | kernel_filename); | |
201 | exit(1); | |
202 | } | |
203 | if (bios_size <= 0) { | |
204 | /* If there is no bios/monitor, start the application. */ | |
205 | env->pc = entry; | |
206 | env->npc = entry + 4; | |
207 | reset_info->entry = entry; | |
208 | } | |
209 | } | |
210 | ||
211 | /* Allocate timers */ | |
212 | grlib_gptimer_create(0x80000300, 2, CPU_CLK, cpu_irqs, 6); | |
213 | ||
214 | /* Allocate uart */ | |
215 | if (serial_hds[0]) { | |
216 | grlib_apbuart_create(0x80000100, serial_hds[0], cpu_irqs[3]); | |
217 | } | |
218 | } | |
219 | ||
e264d29d | 220 | static void leon3_generic_machine_init(MachineClass *mc) |
b04d9890 | 221 | { |
e264d29d EH |
222 | mc->desc = "Leon-3 generic"; |
223 | mc->init = leon3_generic_hw_init; | |
b04d9890 FC |
224 | } |
225 | ||
e264d29d | 226 | DEFINE_MACHINE("leon3_generic", leon3_generic_machine_init) |