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b04d9890 FC |
1 | /* |
2 | * QEMU Leon3 System Emulator | |
3 | * | |
bd30132c | 4 | * Copyright (c) 2010-2019 AdaCore |
b04d9890 FC |
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 | ||
bd30132c | 46 | #define LEON3_PROM_FILENAME "u-boot.bin" |
b04d9890 FC |
47 | |
48 | #define MAX_PILS 16 | |
49 | ||
ea005dae KF |
50 | #define LEON3_IRQMP_OFFSET (0x80000200) |
51 | ||
b04d9890 | 52 | typedef struct ResetData { |
c537d79c | 53 | SPARCCPU *cpu; |
b04d9890 | 54 | uint32_t entry; /* save kernel entry in case of reset */ |
c1570e2a | 55 | target_ulong sp; /* initial stack pointer */ |
b04d9890 FC |
56 | } ResetData; |
57 | ||
58 | static void main_cpu_reset(void *opaque) | |
59 | { | |
60 | ResetData *s = (ResetData *)opaque; | |
259186a7 | 61 | CPUState *cpu = CPU(s->cpu); |
c537d79c | 62 | CPUSPARCState *env = &s->cpu->env; |
b04d9890 | 63 | |
259186a7 | 64 | cpu_reset(cpu); |
b04d9890 | 65 | |
259186a7 | 66 | cpu->halted = 0; |
b04d9890 FC |
67 | env->pc = s->entry; |
68 | env->npc = s->entry + 4; | |
c1570e2a | 69 | env->regbase[6] = s->sp; |
b04d9890 FC |
70 | } |
71 | ||
60f356e8 | 72 | void leon3_irq_ack(void *irq_manager, int intno) |
b04d9890 FC |
73 | { |
74 | grlib_irqmp_ack((DeviceState *)irq_manager, intno); | |
b04d9890 FC |
75 | } |
76 | ||
77 | static void leon3_set_pil_in(void *opaque, uint32_t pil_in) | |
78 | { | |
98cec4a2 | 79 | CPUSPARCState *env = (CPUSPARCState *)opaque; |
d8ed887b | 80 | CPUState *cs; |
b04d9890 FC |
81 | |
82 | assert(env != NULL); | |
83 | ||
84 | env->pil_in = pil_in; | |
85 | ||
86 | if (env->pil_in && (env->interrupt_index == 0 || | |
87 | (env->interrupt_index & ~15) == TT_EXTINT)) { | |
88 | unsigned int i; | |
89 | ||
90 | for (i = 15; i > 0; i--) { | |
91 | if (env->pil_in & (1 << i)) { | |
92 | int old_interrupt = env->interrupt_index; | |
93 | ||
94 | env->interrupt_index = TT_EXTINT | i; | |
95 | if (old_interrupt != env->interrupt_index) { | |
c3affe56 | 96 | cs = CPU(sparc_env_get_cpu(env)); |
b04d9890 | 97 | trace_leon3_set_irq(i); |
c3affe56 | 98 | cpu_interrupt(cs, CPU_INTERRUPT_HARD); |
b04d9890 FC |
99 | } |
100 | break; | |
101 | } | |
102 | } | |
103 | } else if (!env->pil_in && (env->interrupt_index & ~15) == TT_EXTINT) { | |
d8ed887b | 104 | cs = CPU(sparc_env_get_cpu(env)); |
b04d9890 FC |
105 | trace_leon3_reset_irq(env->interrupt_index & 15); |
106 | env->interrupt_index = 0; | |
d8ed887b | 107 | cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD); |
b04d9890 FC |
108 | } |
109 | } | |
110 | ||
3ef96221 | 111 | static void leon3_generic_hw_init(MachineState *machine) |
b04d9890 | 112 | { |
3ef96221 | 113 | ram_addr_t ram_size = machine->ram_size; |
3ef96221 | 114 | const char *kernel_filename = machine->kernel_filename; |
60ad0733 | 115 | SPARCCPU *cpu; |
98cec4a2 | 116 | CPUSPARCState *env; |
a4911d64 AK |
117 | MemoryRegion *address_space_mem = get_system_memory(); |
118 | MemoryRegion *ram = g_new(MemoryRegion, 1); | |
119 | MemoryRegion *prom = g_new(MemoryRegion, 1); | |
b04d9890 FC |
120 | int ret; |
121 | char *filename; | |
122 | qemu_irq *cpu_irqs = NULL; | |
123 | int bios_size; | |
124 | int prom_size; | |
125 | ResetData *reset_info; | |
ea005dae | 126 | DeviceState *dev; |
b04d9890 FC |
127 | |
128 | /* Init CPU */ | |
e9135ab3 | 129 | cpu = SPARC_CPU(cpu_create(machine->cpu_type)); |
60ad0733 | 130 | env = &cpu->env; |
b04d9890 FC |
131 | |
132 | cpu_sparc_set_id(env, 0); | |
133 | ||
134 | /* Reset data */ | |
7267c094 | 135 | reset_info = g_malloc0(sizeof(ResetData)); |
c537d79c | 136 | reset_info->cpu = cpu; |
c1570e2a | 137 | reset_info->sp = 0x40000000 + ram_size; |
b04d9890 FC |
138 | qemu_register_reset(main_cpu_reset, reset_info); |
139 | ||
140 | /* Allocate IRQ manager */ | |
ea005dae KF |
141 | dev = qdev_create(NULL, TYPE_GRLIB_IRQMP); |
142 | qdev_prop_set_ptr(dev, "set_pil_in", leon3_set_pil_in); | |
143 | qdev_prop_set_ptr(dev, "set_pil_in_opaque", env); | |
144 | qdev_init_nofail(dev); | |
145 | sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, LEON3_IRQMP_OFFSET); | |
146 | env->irq_manager = dev; | |
60f356e8 | 147 | env->qemu_irq_ack = leon3_irq_manager; |
ea005dae | 148 | cpu_irqs = qemu_allocate_irqs(grlib_irqmp_set_irq, dev, MAX_PILS); |
b04d9890 FC |
149 | |
150 | /* Allocate RAM */ | |
0a2e467b PMD |
151 | if (ram_size > 1 * GiB) { |
152 | error_report("Too much memory for this machine: %" PRId64 "MB," | |
153 | " maximum 1G", | |
154 | ram_size / MiB); | |
b04d9890 FC |
155 | exit(1); |
156 | } | |
157 | ||
8e7ba4ed | 158 | memory_region_allocate_system_memory(ram, NULL, "leon3.ram", ram_size); |
a4911d64 | 159 | memory_region_add_subregion(address_space_mem, 0x40000000, ram); |
b04d9890 FC |
160 | |
161 | /* Allocate BIOS */ | |
0a2e467b | 162 | prom_size = 8 * MiB; |
98a99ce0 | 163 | memory_region_init_ram(prom, NULL, "Leon3.bios", prom_size, &error_fatal); |
a4911d64 AK |
164 | memory_region_set_readonly(prom, true); |
165 | memory_region_add_subregion(address_space_mem, 0x00000000, prom); | |
b04d9890 FC |
166 | |
167 | /* Load boot prom */ | |
168 | if (bios_name == NULL) { | |
bd30132c | 169 | bios_name = LEON3_PROM_FILENAME; |
b04d9890 FC |
170 | } |
171 | filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); | |
172 | ||
47dc0ec5 PM |
173 | if (filename) { |
174 | bios_size = get_image_size(filename); | |
175 | } else { | |
176 | bios_size = -1; | |
177 | } | |
b04d9890 FC |
178 | |
179 | if (bios_size > prom_size) { | |
29bd7231 | 180 | error_report("could not load prom '%s': file too big", filename); |
b04d9890 FC |
181 | exit(1); |
182 | } | |
183 | ||
184 | if (bios_size > 0) { | |
185 | ret = load_image_targphys(filename, 0x00000000, bios_size); | |
186 | if (ret < 0 || ret > prom_size) { | |
29bd7231 | 187 | error_report("could not load prom '%s'", filename); |
b04d9890 FC |
188 | exit(1); |
189 | } | |
77612541 | 190 | } else if (kernel_filename == NULL && !qtest_enabled()) { |
bd30132c KF |
191 | error_report("Can't read bios image '%s'", filename |
192 | ? filename | |
193 | : LEON3_PROM_FILENAME); | |
b04d9890 FC |
194 | exit(1); |
195 | } | |
d71cdbfd | 196 | g_free(filename); |
b04d9890 FC |
197 | |
198 | /* Can directly load an application. */ | |
199 | if (kernel_filename != NULL) { | |
200 | long kernel_size; | |
201 | uint64_t entry; | |
202 | ||
4366e1db LM |
203 | kernel_size = load_elf(kernel_filename, NULL, NULL, NULL, |
204 | &entry, NULL, NULL, | |
7ef295ea | 205 | 1 /* big endian */, EM_SPARC, 0, 0); |
9176a580 PMD |
206 | if (kernel_size < 0) { |
207 | kernel_size = load_uimage(kernel_filename, NULL, &entry, | |
208 | NULL, NULL, NULL); | |
209 | } | |
b04d9890 | 210 | if (kernel_size < 0) { |
29bd7231 | 211 | error_report("could not load kernel '%s'", kernel_filename); |
b04d9890 FC |
212 | exit(1); |
213 | } | |
214 | if (bios_size <= 0) { | |
215 | /* If there is no bios/monitor, start the application. */ | |
216 | env->pc = entry; | |
217 | env->npc = entry + 4; | |
218 | reset_info->entry = entry; | |
219 | } | |
220 | } | |
221 | ||
222 | /* Allocate timers */ | |
223 | grlib_gptimer_create(0x80000300, 2, CPU_CLK, cpu_irqs, 6); | |
224 | ||
225 | /* Allocate uart */ | |
9bca0edb PM |
226 | if (serial_hd(0)) { |
227 | grlib_apbuart_create(0x80000100, serial_hd(0), cpu_irqs[3]); | |
b04d9890 FC |
228 | } |
229 | } | |
230 | ||
e264d29d | 231 | static void leon3_generic_machine_init(MachineClass *mc) |
b04d9890 | 232 | { |
e264d29d EH |
233 | mc->desc = "Leon-3 generic"; |
234 | mc->init = leon3_generic_hw_init; | |
e9135ab3 | 235 | mc->default_cpu_type = SPARC_CPU_TYPE_NAME("LEON3"); |
b04d9890 FC |
236 | } |
237 | ||
e264d29d | 238 | DEFINE_MACHINE("leon3_generic", leon3_generic_machine_init) |