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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 | */ | |
db5ebe5f | 24 | #include "qemu/osdep.h" |
0a2e467b | 25 | #include "qemu/units.h" |
29bd7231 | 26 | #include "qemu/error-report.h" |
da34e65c | 27 | #include "qapi/error.h" |
4771d756 PB |
28 | #include "qemu-common.h" |
29 | #include "cpu.h" | |
83c9f4ca | 30 | #include "hw/hw.h" |
1de7afc9 | 31 | #include "qemu/timer.h" |
83c9f4ca | 32 | #include "hw/ptimer.h" |
9c17d615 | 33 | #include "sysemu/sysemu.h" |
77612541 | 34 | #include "sysemu/qtest.h" |
83c9f4ca PB |
35 | #include "hw/boards.h" |
36 | #include "hw/loader.h" | |
b04d9890 FC |
37 | #include "elf.h" |
38 | #include "trace.h" | |
022c62cb | 39 | #include "exec/address-spaces.h" |
b04d9890 | 40 | |
0d09e41a | 41 | #include "hw/sparc/grlib.h" |
b04d9890 FC |
42 | |
43 | /* Default system clock. */ | |
44 | #define CPU_CLK (40 * 1000 * 1000) | |
45 | ||
46 | #define PROM_FILENAME "u-boot.bin" | |
47 | ||
48 | #define MAX_PILS 16 | |
49 | ||
50 | typedef struct ResetData { | |
c537d79c | 51 | SPARCCPU *cpu; |
b04d9890 | 52 | uint32_t entry; /* save kernel entry in case of reset */ |
c1570e2a | 53 | target_ulong sp; /* initial stack pointer */ |
b04d9890 FC |
54 | } ResetData; |
55 | ||
56 | static void main_cpu_reset(void *opaque) | |
57 | { | |
58 | ResetData *s = (ResetData *)opaque; | |
259186a7 | 59 | CPUState *cpu = CPU(s->cpu); |
c537d79c | 60 | CPUSPARCState *env = &s->cpu->env; |
b04d9890 | 61 | |
259186a7 | 62 | cpu_reset(cpu); |
b04d9890 | 63 | |
259186a7 | 64 | cpu->halted = 0; |
b04d9890 FC |
65 | env->pc = s->entry; |
66 | env->npc = s->entry + 4; | |
c1570e2a | 67 | env->regbase[6] = s->sp; |
b04d9890 FC |
68 | } |
69 | ||
60f356e8 | 70 | void leon3_irq_ack(void *irq_manager, int intno) |
b04d9890 FC |
71 | { |
72 | grlib_irqmp_ack((DeviceState *)irq_manager, intno); | |
b04d9890 FC |
73 | } |
74 | ||
75 | static void leon3_set_pil_in(void *opaque, uint32_t pil_in) | |
76 | { | |
98cec4a2 | 77 | CPUSPARCState *env = (CPUSPARCState *)opaque; |
d8ed887b | 78 | CPUState *cs; |
b04d9890 FC |
79 | |
80 | assert(env != NULL); | |
81 | ||
82 | env->pil_in = pil_in; | |
83 | ||
84 | if (env->pil_in && (env->interrupt_index == 0 || | |
85 | (env->interrupt_index & ~15) == TT_EXTINT)) { | |
86 | unsigned int i; | |
87 | ||
88 | for (i = 15; i > 0; i--) { | |
89 | if (env->pil_in & (1 << i)) { | |
90 | int old_interrupt = env->interrupt_index; | |
91 | ||
92 | env->interrupt_index = TT_EXTINT | i; | |
93 | if (old_interrupt != env->interrupt_index) { | |
c3affe56 | 94 | cs = CPU(sparc_env_get_cpu(env)); |
b04d9890 | 95 | trace_leon3_set_irq(i); |
c3affe56 | 96 | cpu_interrupt(cs, CPU_INTERRUPT_HARD); |
b04d9890 FC |
97 | } |
98 | break; | |
99 | } | |
100 | } | |
101 | } else if (!env->pil_in && (env->interrupt_index & ~15) == TT_EXTINT) { | |
d8ed887b | 102 | cs = CPU(sparc_env_get_cpu(env)); |
b04d9890 FC |
103 | trace_leon3_reset_irq(env->interrupt_index & 15); |
104 | env->interrupt_index = 0; | |
d8ed887b | 105 | cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD); |
b04d9890 FC |
106 | } |
107 | } | |
108 | ||
3ef96221 | 109 | static void leon3_generic_hw_init(MachineState *machine) |
b04d9890 | 110 | { |
3ef96221 | 111 | ram_addr_t ram_size = machine->ram_size; |
3ef96221 | 112 | const char *kernel_filename = machine->kernel_filename; |
60ad0733 | 113 | SPARCCPU *cpu; |
98cec4a2 | 114 | CPUSPARCState *env; |
a4911d64 AK |
115 | MemoryRegion *address_space_mem = get_system_memory(); |
116 | MemoryRegion *ram = g_new(MemoryRegion, 1); | |
117 | MemoryRegion *prom = g_new(MemoryRegion, 1); | |
b04d9890 FC |
118 | int ret; |
119 | char *filename; | |
120 | qemu_irq *cpu_irqs = NULL; | |
121 | int bios_size; | |
122 | int prom_size; | |
123 | ResetData *reset_info; | |
124 | ||
125 | /* Init CPU */ | |
e9135ab3 | 126 | cpu = SPARC_CPU(cpu_create(machine->cpu_type)); |
60ad0733 | 127 | env = &cpu->env; |
b04d9890 FC |
128 | |
129 | cpu_sparc_set_id(env, 0); | |
130 | ||
131 | /* Reset data */ | |
7267c094 | 132 | reset_info = g_malloc0(sizeof(ResetData)); |
c537d79c | 133 | reset_info->cpu = cpu; |
c1570e2a | 134 | reset_info->sp = 0x40000000 + ram_size; |
b04d9890 FC |
135 | qemu_register_reset(main_cpu_reset, reset_info); |
136 | ||
137 | /* Allocate IRQ manager */ | |
138 | grlib_irqmp_create(0x80000200, env, &cpu_irqs, MAX_PILS, &leon3_set_pil_in); | |
139 | ||
60f356e8 | 140 | env->qemu_irq_ack = leon3_irq_manager; |
b04d9890 FC |
141 | |
142 | /* Allocate RAM */ | |
0a2e467b PMD |
143 | if (ram_size > 1 * GiB) { |
144 | error_report("Too much memory for this machine: %" PRId64 "MB," | |
145 | " maximum 1G", | |
146 | ram_size / MiB); | |
b04d9890 FC |
147 | exit(1); |
148 | } | |
149 | ||
8e7ba4ed | 150 | memory_region_allocate_system_memory(ram, NULL, "leon3.ram", ram_size); |
a4911d64 | 151 | memory_region_add_subregion(address_space_mem, 0x40000000, ram); |
b04d9890 FC |
152 | |
153 | /* Allocate BIOS */ | |
0a2e467b | 154 | prom_size = 8 * MiB; |
98a99ce0 | 155 | memory_region_init_ram(prom, NULL, "Leon3.bios", prom_size, &error_fatal); |
a4911d64 AK |
156 | memory_region_set_readonly(prom, true); |
157 | memory_region_add_subregion(address_space_mem, 0x00000000, prom); | |
b04d9890 FC |
158 | |
159 | /* Load boot prom */ | |
160 | if (bios_name == NULL) { | |
161 | bios_name = PROM_FILENAME; | |
162 | } | |
163 | filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); | |
164 | ||
47dc0ec5 PM |
165 | if (filename) { |
166 | bios_size = get_image_size(filename); | |
167 | } else { | |
168 | bios_size = -1; | |
169 | } | |
b04d9890 FC |
170 | |
171 | if (bios_size > prom_size) { | |
29bd7231 | 172 | error_report("could not load prom '%s': file too big", filename); |
b04d9890 FC |
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) { | |
29bd7231 | 179 | error_report("could not load prom '%s'", filename); |
b04d9890 FC |
180 | exit(1); |
181 | } | |
77612541 | 182 | } else if (kernel_filename == NULL && !qtest_enabled()) { |
29bd7231 | 183 | error_report("Can't read bios image %s", filename); |
b04d9890 FC |
184 | exit(1); |
185 | } | |
d71cdbfd | 186 | g_free(filename); |
b04d9890 FC |
187 | |
188 | /* Can directly load an application. */ | |
189 | if (kernel_filename != NULL) { | |
190 | long kernel_size; | |
191 | uint64_t entry; | |
192 | ||
193 | kernel_size = load_elf(kernel_filename, NULL, NULL, &entry, NULL, NULL, | |
7ef295ea | 194 | 1 /* big endian */, EM_SPARC, 0, 0); |
b04d9890 | 195 | if (kernel_size < 0) { |
29bd7231 | 196 | error_report("could not load kernel '%s'", kernel_filename); |
b04d9890 FC |
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 */ | |
9bca0edb PM |
211 | if (serial_hd(0)) { |
212 | grlib_apbuart_create(0x80000100, serial_hd(0), cpu_irqs[3]); | |
b04d9890 FC |
213 | } |
214 | } | |
215 | ||
e264d29d | 216 | static void leon3_generic_machine_init(MachineClass *mc) |
b04d9890 | 217 | { |
e264d29d EH |
218 | mc->desc = "Leon-3 generic"; |
219 | mc->init = leon3_generic_hw_init; | |
e9135ab3 | 220 | mc->default_cpu_type = SPARC_CPU_TYPE_NAME("LEON3"); |
b04d9890 FC |
221 | } |
222 | ||
e264d29d | 223 | DEFINE_MACHINE("leon3_generic", leon3_generic_machine_init) |