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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 | ||
b70447aa KF |
50 | #define LEON3_UART_OFFSET (0x80000100) |
51 | #define LEON3_UART_IRQ (3) | |
52 | ||
ea005dae KF |
53 | #define LEON3_IRQMP_OFFSET (0x80000200) |
54 | ||
948caec8 KF |
55 | #define LEON3_TIMER_OFFSET (0x80000300) |
56 | #define LEON3_TIMER_IRQ (6) | |
57 | #define LEON3_TIMER_COUNT (2) | |
58 | ||
b04d9890 | 59 | typedef struct ResetData { |
c537d79c | 60 | SPARCCPU *cpu; |
b04d9890 | 61 | uint32_t entry; /* save kernel entry in case of reset */ |
c1570e2a | 62 | target_ulong sp; /* initial stack pointer */ |
b04d9890 FC |
63 | } ResetData; |
64 | ||
65 | static void main_cpu_reset(void *opaque) | |
66 | { | |
67 | ResetData *s = (ResetData *)opaque; | |
259186a7 | 68 | CPUState *cpu = CPU(s->cpu); |
c537d79c | 69 | CPUSPARCState *env = &s->cpu->env; |
b04d9890 | 70 | |
259186a7 | 71 | cpu_reset(cpu); |
b04d9890 | 72 | |
259186a7 | 73 | cpu->halted = 0; |
b04d9890 FC |
74 | env->pc = s->entry; |
75 | env->npc = s->entry + 4; | |
c1570e2a | 76 | env->regbase[6] = s->sp; |
b04d9890 FC |
77 | } |
78 | ||
60f356e8 | 79 | void leon3_irq_ack(void *irq_manager, int intno) |
b04d9890 FC |
80 | { |
81 | grlib_irqmp_ack((DeviceState *)irq_manager, intno); | |
b04d9890 FC |
82 | } |
83 | ||
84 | static void leon3_set_pil_in(void *opaque, uint32_t pil_in) | |
85 | { | |
98cec4a2 | 86 | CPUSPARCState *env = (CPUSPARCState *)opaque; |
d8ed887b | 87 | CPUState *cs; |
b04d9890 FC |
88 | |
89 | assert(env != NULL); | |
90 | ||
91 | env->pil_in = pil_in; | |
92 | ||
93 | if (env->pil_in && (env->interrupt_index == 0 || | |
94 | (env->interrupt_index & ~15) == TT_EXTINT)) { | |
95 | unsigned int i; | |
96 | ||
97 | for (i = 15; i > 0; i--) { | |
98 | if (env->pil_in & (1 << i)) { | |
99 | int old_interrupt = env->interrupt_index; | |
100 | ||
101 | env->interrupt_index = TT_EXTINT | i; | |
102 | if (old_interrupt != env->interrupt_index) { | |
c3affe56 | 103 | cs = CPU(sparc_env_get_cpu(env)); |
b04d9890 | 104 | trace_leon3_set_irq(i); |
c3affe56 | 105 | cpu_interrupt(cs, CPU_INTERRUPT_HARD); |
b04d9890 FC |
106 | } |
107 | break; | |
108 | } | |
109 | } | |
110 | } else if (!env->pil_in && (env->interrupt_index & ~15) == TT_EXTINT) { | |
d8ed887b | 111 | cs = CPU(sparc_env_get_cpu(env)); |
b04d9890 FC |
112 | trace_leon3_reset_irq(env->interrupt_index & 15); |
113 | env->interrupt_index = 0; | |
d8ed887b | 114 | cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD); |
b04d9890 FC |
115 | } |
116 | } | |
117 | ||
3ef96221 | 118 | static void leon3_generic_hw_init(MachineState *machine) |
b04d9890 | 119 | { |
3ef96221 | 120 | ram_addr_t ram_size = machine->ram_size; |
3ef96221 | 121 | const char *kernel_filename = machine->kernel_filename; |
60ad0733 | 122 | SPARCCPU *cpu; |
98cec4a2 | 123 | CPUSPARCState *env; |
a4911d64 AK |
124 | MemoryRegion *address_space_mem = get_system_memory(); |
125 | MemoryRegion *ram = g_new(MemoryRegion, 1); | |
126 | MemoryRegion *prom = g_new(MemoryRegion, 1); | |
b04d9890 FC |
127 | int ret; |
128 | char *filename; | |
129 | qemu_irq *cpu_irqs = NULL; | |
130 | int bios_size; | |
131 | int prom_size; | |
132 | ResetData *reset_info; | |
ea005dae | 133 | DeviceState *dev; |
948caec8 | 134 | int i; |
b04d9890 FC |
135 | |
136 | /* Init CPU */ | |
e9135ab3 | 137 | cpu = SPARC_CPU(cpu_create(machine->cpu_type)); |
60ad0733 | 138 | env = &cpu->env; |
b04d9890 FC |
139 | |
140 | cpu_sparc_set_id(env, 0); | |
141 | ||
142 | /* Reset data */ | |
7267c094 | 143 | reset_info = g_malloc0(sizeof(ResetData)); |
c537d79c | 144 | reset_info->cpu = cpu; |
c1570e2a | 145 | reset_info->sp = 0x40000000 + ram_size; |
b04d9890 FC |
146 | qemu_register_reset(main_cpu_reset, reset_info); |
147 | ||
148 | /* Allocate IRQ manager */ | |
ea005dae KF |
149 | dev = qdev_create(NULL, TYPE_GRLIB_IRQMP); |
150 | qdev_prop_set_ptr(dev, "set_pil_in", leon3_set_pil_in); | |
151 | qdev_prop_set_ptr(dev, "set_pil_in_opaque", env); | |
152 | qdev_init_nofail(dev); | |
153 | sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, LEON3_IRQMP_OFFSET); | |
154 | env->irq_manager = dev; | |
60f356e8 | 155 | env->qemu_irq_ack = leon3_irq_manager; |
ea005dae | 156 | cpu_irqs = qemu_allocate_irqs(grlib_irqmp_set_irq, dev, MAX_PILS); |
b04d9890 FC |
157 | |
158 | /* Allocate RAM */ | |
0a2e467b PMD |
159 | if (ram_size > 1 * GiB) { |
160 | error_report("Too much memory for this machine: %" PRId64 "MB," | |
161 | " maximum 1G", | |
162 | ram_size / MiB); | |
b04d9890 FC |
163 | exit(1); |
164 | } | |
165 | ||
8e7ba4ed | 166 | memory_region_allocate_system_memory(ram, NULL, "leon3.ram", ram_size); |
a4911d64 | 167 | memory_region_add_subregion(address_space_mem, 0x40000000, ram); |
b04d9890 FC |
168 | |
169 | /* Allocate BIOS */ | |
0a2e467b | 170 | prom_size = 8 * MiB; |
98a99ce0 | 171 | memory_region_init_ram(prom, NULL, "Leon3.bios", prom_size, &error_fatal); |
a4911d64 AK |
172 | memory_region_set_readonly(prom, true); |
173 | memory_region_add_subregion(address_space_mem, 0x00000000, prom); | |
b04d9890 FC |
174 | |
175 | /* Load boot prom */ | |
176 | if (bios_name == NULL) { | |
bd30132c | 177 | bios_name = LEON3_PROM_FILENAME; |
b04d9890 FC |
178 | } |
179 | filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); | |
180 | ||
47dc0ec5 PM |
181 | if (filename) { |
182 | bios_size = get_image_size(filename); | |
183 | } else { | |
184 | bios_size = -1; | |
185 | } | |
b04d9890 FC |
186 | |
187 | if (bios_size > prom_size) { | |
29bd7231 | 188 | error_report("could not load prom '%s': file too big", filename); |
b04d9890 FC |
189 | exit(1); |
190 | } | |
191 | ||
192 | if (bios_size > 0) { | |
193 | ret = load_image_targphys(filename, 0x00000000, bios_size); | |
194 | if (ret < 0 || ret > prom_size) { | |
29bd7231 | 195 | error_report("could not load prom '%s'", filename); |
b04d9890 FC |
196 | exit(1); |
197 | } | |
77612541 | 198 | } else if (kernel_filename == NULL && !qtest_enabled()) { |
bd30132c KF |
199 | error_report("Can't read bios image '%s'", filename |
200 | ? filename | |
201 | : LEON3_PROM_FILENAME); | |
b04d9890 FC |
202 | exit(1); |
203 | } | |
d71cdbfd | 204 | g_free(filename); |
b04d9890 FC |
205 | |
206 | /* Can directly load an application. */ | |
207 | if (kernel_filename != NULL) { | |
208 | long kernel_size; | |
209 | uint64_t entry; | |
210 | ||
4366e1db LM |
211 | kernel_size = load_elf(kernel_filename, NULL, NULL, NULL, |
212 | &entry, NULL, NULL, | |
7ef295ea | 213 | 1 /* big endian */, EM_SPARC, 0, 0); |
9176a580 PMD |
214 | if (kernel_size < 0) { |
215 | kernel_size = load_uimage(kernel_filename, NULL, &entry, | |
216 | NULL, NULL, NULL); | |
217 | } | |
b04d9890 | 218 | if (kernel_size < 0) { |
29bd7231 | 219 | error_report("could not load kernel '%s'", kernel_filename); |
b04d9890 FC |
220 | exit(1); |
221 | } | |
222 | if (bios_size <= 0) { | |
223 | /* If there is no bios/monitor, start the application. */ | |
224 | env->pc = entry; | |
225 | env->npc = entry + 4; | |
226 | reset_info->entry = entry; | |
227 | } | |
228 | } | |
229 | ||
230 | /* Allocate timers */ | |
948caec8 KF |
231 | dev = qdev_create(NULL, TYPE_GRLIB_GPTIMER); |
232 | qdev_prop_set_uint32(dev, "nr-timers", LEON3_TIMER_COUNT); | |
233 | qdev_prop_set_uint32(dev, "frequency", CPU_CLK); | |
234 | qdev_prop_set_uint32(dev, "irq-line", LEON3_TIMER_IRQ); | |
235 | qdev_init_nofail(dev); | |
236 | ||
237 | sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, LEON3_TIMER_OFFSET); | |
238 | for (i = 0; i < LEON3_TIMER_COUNT; i++) { | |
239 | sysbus_connect_irq(SYS_BUS_DEVICE(dev), i, | |
240 | cpu_irqs[LEON3_TIMER_IRQ + i]); | |
241 | } | |
b04d9890 FC |
242 | |
243 | /* Allocate uart */ | |
9bca0edb | 244 | if (serial_hd(0)) { |
b70447aa KF |
245 | dev = qdev_create(NULL, TYPE_GRLIB_APB_UART); |
246 | qdev_prop_set_chr(dev, "chrdev", serial_hd(0)); | |
247 | qdev_init_nofail(dev); | |
248 | sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, LEON3_UART_OFFSET); | |
249 | sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, cpu_irqs[LEON3_UART_IRQ]); | |
b04d9890 FC |
250 | } |
251 | } | |
252 | ||
e264d29d | 253 | static void leon3_generic_machine_init(MachineClass *mc) |
b04d9890 | 254 | { |
e264d29d EH |
255 | mc->desc = "Leon-3 generic"; |
256 | mc->init = leon3_generic_hw_init; | |
e9135ab3 | 257 | mc->default_cpu_type = SPARC_CPU_TYPE_NAME("LEON3"); |
b04d9890 FC |
258 | } |
259 | ||
e264d29d | 260 | DEFINE_MACHINE("leon3_generic", leon3_generic_machine_init) |