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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 | */ | |
71e8a915 | 24 | |
db5ebe5f | 25 | #include "qemu/osdep.h" |
0a2e467b | 26 | #include "qemu/units.h" |
29bd7231 | 27 | #include "qemu/error-report.h" |
da34e65c | 28 | #include "qapi/error.h" |
4771d756 PB |
29 | #include "qemu-common.h" |
30 | #include "cpu.h" | |
64552b6b | 31 | #include "hw/irq.h" |
1de7afc9 | 32 | #include "qemu/timer.h" |
83c9f4ca | 33 | #include "hw/ptimer.h" |
a27bd6c7 | 34 | #include "hw/qdev-properties.h" |
9c17d615 | 35 | #include "sysemu/sysemu.h" |
77612541 | 36 | #include "sysemu/qtest.h" |
71e8a915 | 37 | #include "sysemu/reset.h" |
83c9f4ca PB |
38 | #include "hw/boards.h" |
39 | #include "hw/loader.h" | |
b04d9890 FC |
40 | #include "elf.h" |
41 | #include "trace.h" | |
022c62cb | 42 | #include "exec/address-spaces.h" |
b04d9890 | 43 | |
0d09e41a | 44 | #include "hw/sparc/grlib.h" |
162abf1a | 45 | #include "hw/misc/grlib_ahb_apb_pnp.h" |
b04d9890 FC |
46 | |
47 | /* Default system clock. */ | |
48 | #define CPU_CLK (40 * 1000 * 1000) | |
49 | ||
bd30132c | 50 | #define LEON3_PROM_FILENAME "u-boot.bin" |
dbed0d2d KF |
51 | #define LEON3_PROM_OFFSET (0x00000000) |
52 | #define LEON3_RAM_OFFSET (0x40000000) | |
b04d9890 FC |
53 | |
54 | #define MAX_PILS 16 | |
55 | ||
b70447aa KF |
56 | #define LEON3_UART_OFFSET (0x80000100) |
57 | #define LEON3_UART_IRQ (3) | |
58 | ||
ea005dae KF |
59 | #define LEON3_IRQMP_OFFSET (0x80000200) |
60 | ||
948caec8 KF |
61 | #define LEON3_TIMER_OFFSET (0x80000300) |
62 | #define LEON3_TIMER_IRQ (6) | |
63 | #define LEON3_TIMER_COUNT (2) | |
64 | ||
162abf1a KF |
65 | #define LEON3_APB_PNP_OFFSET (0x800FF000) |
66 | #define LEON3_AHB_PNP_OFFSET (0xFFFFF000) | |
67 | ||
b04d9890 | 68 | typedef struct ResetData { |
c537d79c | 69 | SPARCCPU *cpu; |
b04d9890 | 70 | uint32_t entry; /* save kernel entry in case of reset */ |
c1570e2a | 71 | target_ulong sp; /* initial stack pointer */ |
b04d9890 FC |
72 | } ResetData; |
73 | ||
dbed0d2d KF |
74 | static uint32_t *gen_store_u32(uint32_t *code, hwaddr addr, uint32_t val) |
75 | { | |
76 | stl_p(code++, 0x82100000); /* mov %g0, %g1 */ | |
77 | stl_p(code++, 0x84100000); /* mov %g0, %g2 */ | |
78 | stl_p(code++, 0x03000000 + | |
79 | extract32(addr, 10, 22)); | |
80 | /* sethi %hi(addr), %g1 */ | |
81 | stl_p(code++, 0x82106000 + | |
82 | extract32(addr, 0, 10)); | |
83 | /* or %g1, addr, %g1 */ | |
84 | stl_p(code++, 0x05000000 + | |
85 | extract32(val, 10, 22)); | |
86 | /* sethi %hi(val), %g2 */ | |
87 | stl_p(code++, 0x8410a000 + | |
88 | extract32(val, 0, 10)); | |
89 | /* or %g2, val, %g2 */ | |
90 | stl_p(code++, 0xc4204000); /* st %g2, [ %g1 ] */ | |
91 | ||
92 | return code; | |
93 | } | |
94 | ||
95 | /* | |
96 | * When loading a kernel in RAM the machine is expected to be in a different | |
97 | * state (eg: initialized by the bootloader). This little code reproduces | |
98 | * this behavior. | |
99 | */ | |
100 | static void write_bootloader(CPUSPARCState *env, uint8_t *base, | |
101 | hwaddr kernel_addr) | |
102 | { | |
103 | uint32_t *p = (uint32_t *) base; | |
104 | ||
105 | /* Initialize the UARTs */ | |
106 | /* *UART_CONTROL = UART_RECEIVE_ENABLE | UART_TRANSMIT_ENABLE; */ | |
107 | p = gen_store_u32(p, 0x80000108, 3); | |
108 | ||
109 | /* Initialize the TIMER 0 */ | |
110 | /* *GPTIMER_SCALER_RELOAD = 40 - 1; */ | |
111 | p = gen_store_u32(p, 0x80000304, 39); | |
112 | /* *GPTIMER0_COUNTER_RELOAD = 0xFFFE; */ | |
113 | p = gen_store_u32(p, 0x80000314, 0xFFFFFFFE); | |
114 | /* *GPTIMER0_CONFIG = GPTIMER_ENABLE | GPTIMER_RESTART; */ | |
115 | p = gen_store_u32(p, 0x80000318, 3); | |
116 | ||
117 | /* JUMP to the entry point */ | |
118 | stl_p(p++, 0x82100000); /* mov %g0, %g1 */ | |
119 | stl_p(p++, 0x03000000 + extract32(kernel_addr, 10, 22)); | |
120 | /* sethi %hi(kernel_addr), %g1 */ | |
121 | stl_p(p++, 0x82106000 + extract32(kernel_addr, 0, 10)); | |
122 | /* or kernel_addr, %g1 */ | |
123 | stl_p(p++, 0x81c04000); /* jmp %g1 */ | |
124 | stl_p(p++, 0x01000000); /* nop */ | |
125 | } | |
126 | ||
b04d9890 FC |
127 | static void main_cpu_reset(void *opaque) |
128 | { | |
129 | ResetData *s = (ResetData *)opaque; | |
259186a7 | 130 | CPUState *cpu = CPU(s->cpu); |
c537d79c | 131 | CPUSPARCState *env = &s->cpu->env; |
b04d9890 | 132 | |
259186a7 | 133 | cpu_reset(cpu); |
b04d9890 | 134 | |
259186a7 | 135 | cpu->halted = 0; |
b04d9890 FC |
136 | env->pc = s->entry; |
137 | env->npc = s->entry + 4; | |
c1570e2a | 138 | env->regbase[6] = s->sp; |
b04d9890 FC |
139 | } |
140 | ||
60f356e8 | 141 | void leon3_irq_ack(void *irq_manager, int intno) |
b04d9890 FC |
142 | { |
143 | grlib_irqmp_ack((DeviceState *)irq_manager, intno); | |
b04d9890 FC |
144 | } |
145 | ||
146 | static void leon3_set_pil_in(void *opaque, uint32_t pil_in) | |
147 | { | |
98cec4a2 | 148 | CPUSPARCState *env = (CPUSPARCState *)opaque; |
d8ed887b | 149 | CPUState *cs; |
b04d9890 FC |
150 | |
151 | assert(env != NULL); | |
152 | ||
153 | env->pil_in = pil_in; | |
154 | ||
155 | if (env->pil_in && (env->interrupt_index == 0 || | |
156 | (env->interrupt_index & ~15) == TT_EXTINT)) { | |
157 | unsigned int i; | |
158 | ||
159 | for (i = 15; i > 0; i--) { | |
160 | if (env->pil_in & (1 << i)) { | |
161 | int old_interrupt = env->interrupt_index; | |
162 | ||
163 | env->interrupt_index = TT_EXTINT | i; | |
164 | if (old_interrupt != env->interrupt_index) { | |
5a59fbce | 165 | cs = env_cpu(env); |
b04d9890 | 166 | trace_leon3_set_irq(i); |
c3affe56 | 167 | cpu_interrupt(cs, CPU_INTERRUPT_HARD); |
b04d9890 FC |
168 | } |
169 | break; | |
170 | } | |
171 | } | |
172 | } else if (!env->pil_in && (env->interrupt_index & ~15) == TT_EXTINT) { | |
5a59fbce | 173 | cs = env_cpu(env); |
b04d9890 FC |
174 | trace_leon3_reset_irq(env->interrupt_index & 15); |
175 | env->interrupt_index = 0; | |
d8ed887b | 176 | cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD); |
b04d9890 FC |
177 | } |
178 | } | |
179 | ||
3ef96221 | 180 | static void leon3_generic_hw_init(MachineState *machine) |
b04d9890 | 181 | { |
3ef96221 | 182 | ram_addr_t ram_size = machine->ram_size; |
3ef96221 | 183 | const char *kernel_filename = machine->kernel_filename; |
60ad0733 | 184 | SPARCCPU *cpu; |
98cec4a2 | 185 | CPUSPARCState *env; |
a4911d64 AK |
186 | MemoryRegion *address_space_mem = get_system_memory(); |
187 | MemoryRegion *ram = g_new(MemoryRegion, 1); | |
188 | MemoryRegion *prom = g_new(MemoryRegion, 1); | |
b04d9890 FC |
189 | int ret; |
190 | char *filename; | |
191 | qemu_irq *cpu_irqs = NULL; | |
192 | int bios_size; | |
193 | int prom_size; | |
194 | ResetData *reset_info; | |
ea005dae | 195 | DeviceState *dev; |
948caec8 | 196 | int i; |
162abf1a KF |
197 | AHBPnp *ahb_pnp; |
198 | APBPnp *apb_pnp; | |
b04d9890 FC |
199 | |
200 | /* Init CPU */ | |
e9135ab3 | 201 | cpu = SPARC_CPU(cpu_create(machine->cpu_type)); |
60ad0733 | 202 | env = &cpu->env; |
b04d9890 FC |
203 | |
204 | cpu_sparc_set_id(env, 0); | |
205 | ||
206 | /* Reset data */ | |
7267c094 | 207 | reset_info = g_malloc0(sizeof(ResetData)); |
c537d79c | 208 | reset_info->cpu = cpu; |
dbed0d2d | 209 | reset_info->sp = LEON3_RAM_OFFSET + ram_size; |
b04d9890 FC |
210 | qemu_register_reset(main_cpu_reset, reset_info); |
211 | ||
162abf1a KF |
212 | ahb_pnp = GRLIB_AHB_PNP(object_new(TYPE_GRLIB_AHB_PNP)); |
213 | object_property_set_bool(OBJECT(ahb_pnp), true, "realized", &error_fatal); | |
214 | sysbus_mmio_map(SYS_BUS_DEVICE(ahb_pnp), 0, LEON3_AHB_PNP_OFFSET); | |
215 | grlib_ahb_pnp_add_entry(ahb_pnp, 0, 0, GRLIB_VENDOR_GAISLER, | |
216 | GRLIB_LEON3_DEV, GRLIB_AHB_MASTER, | |
217 | GRLIB_CPU_AREA); | |
218 | ||
219 | apb_pnp = GRLIB_APB_PNP(object_new(TYPE_GRLIB_APB_PNP)); | |
220 | object_property_set_bool(OBJECT(apb_pnp), true, "realized", &error_fatal); | |
221 | sysbus_mmio_map(SYS_BUS_DEVICE(apb_pnp), 0, LEON3_APB_PNP_OFFSET); | |
222 | grlib_ahb_pnp_add_entry(ahb_pnp, LEON3_APB_PNP_OFFSET, 0xFFF, | |
223 | GRLIB_VENDOR_GAISLER, GRLIB_APBMST_DEV, | |
224 | GRLIB_AHB_SLAVE, GRLIB_AHBMEM_AREA); | |
225 | ||
b04d9890 | 226 | /* Allocate IRQ manager */ |
ea005dae KF |
227 | dev = qdev_create(NULL, TYPE_GRLIB_IRQMP); |
228 | qdev_prop_set_ptr(dev, "set_pil_in", leon3_set_pil_in); | |
229 | qdev_prop_set_ptr(dev, "set_pil_in_opaque", env); | |
230 | qdev_init_nofail(dev); | |
231 | sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, LEON3_IRQMP_OFFSET); | |
232 | env->irq_manager = dev; | |
60f356e8 | 233 | env->qemu_irq_ack = leon3_irq_manager; |
ea005dae | 234 | cpu_irqs = qemu_allocate_irqs(grlib_irqmp_set_irq, dev, MAX_PILS); |
162abf1a KF |
235 | grlib_apb_pnp_add_entry(apb_pnp, LEON3_IRQMP_OFFSET, 0xFFF, |
236 | GRLIB_VENDOR_GAISLER, GRLIB_IRQMP_DEV, | |
237 | 2, 0, GRLIB_APBIO_AREA); | |
b04d9890 FC |
238 | |
239 | /* Allocate RAM */ | |
0a2e467b PMD |
240 | if (ram_size > 1 * GiB) { |
241 | error_report("Too much memory for this machine: %" PRId64 "MB," | |
242 | " maximum 1G", | |
243 | ram_size / MiB); | |
b04d9890 FC |
244 | exit(1); |
245 | } | |
246 | ||
8e7ba4ed | 247 | memory_region_allocate_system_memory(ram, NULL, "leon3.ram", ram_size); |
dbed0d2d | 248 | memory_region_add_subregion(address_space_mem, LEON3_RAM_OFFSET, ram); |
b04d9890 FC |
249 | |
250 | /* Allocate BIOS */ | |
0a2e467b | 251 | prom_size = 8 * MiB; |
98a99ce0 | 252 | memory_region_init_ram(prom, NULL, "Leon3.bios", prom_size, &error_fatal); |
a4911d64 | 253 | memory_region_set_readonly(prom, true); |
dbed0d2d | 254 | memory_region_add_subregion(address_space_mem, LEON3_PROM_OFFSET, prom); |
b04d9890 FC |
255 | |
256 | /* Load boot prom */ | |
257 | if (bios_name == NULL) { | |
bd30132c | 258 | bios_name = LEON3_PROM_FILENAME; |
b04d9890 FC |
259 | } |
260 | filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); | |
261 | ||
47dc0ec5 PM |
262 | if (filename) { |
263 | bios_size = get_image_size(filename); | |
264 | } else { | |
265 | bios_size = -1; | |
266 | } | |
b04d9890 FC |
267 | |
268 | if (bios_size > prom_size) { | |
29bd7231 | 269 | error_report("could not load prom '%s': file too big", filename); |
b04d9890 FC |
270 | exit(1); |
271 | } | |
272 | ||
273 | if (bios_size > 0) { | |
dbed0d2d | 274 | ret = load_image_targphys(filename, LEON3_PROM_OFFSET, bios_size); |
b04d9890 | 275 | if (ret < 0 || ret > prom_size) { |
29bd7231 | 276 | error_report("could not load prom '%s'", filename); |
b04d9890 FC |
277 | exit(1); |
278 | } | |
77612541 | 279 | } else if (kernel_filename == NULL && !qtest_enabled()) { |
bd30132c KF |
280 | error_report("Can't read bios image '%s'", filename |
281 | ? filename | |
282 | : LEON3_PROM_FILENAME); | |
b04d9890 FC |
283 | exit(1); |
284 | } | |
d71cdbfd | 285 | g_free(filename); |
b04d9890 FC |
286 | |
287 | /* Can directly load an application. */ | |
288 | if (kernel_filename != NULL) { | |
289 | long kernel_size; | |
290 | uint64_t entry; | |
291 | ||
4366e1db LM |
292 | kernel_size = load_elf(kernel_filename, NULL, NULL, NULL, |
293 | &entry, NULL, NULL, | |
7ef295ea | 294 | 1 /* big endian */, EM_SPARC, 0, 0); |
9176a580 PMD |
295 | if (kernel_size < 0) { |
296 | kernel_size = load_uimage(kernel_filename, NULL, &entry, | |
297 | NULL, NULL, NULL); | |
298 | } | |
b04d9890 | 299 | if (kernel_size < 0) { |
29bd7231 | 300 | error_report("could not load kernel '%s'", kernel_filename); |
b04d9890 FC |
301 | exit(1); |
302 | } | |
303 | if (bios_size <= 0) { | |
dbed0d2d KF |
304 | /* |
305 | * If there is no bios/monitor just start the application but put | |
306 | * the machine in an initialized state through a little | |
307 | * bootloader. | |
308 | */ | |
309 | uint8_t *bootloader_entry; | |
310 | ||
311 | bootloader_entry = memory_region_get_ram_ptr(prom); | |
312 | write_bootloader(env, bootloader_entry, entry); | |
313 | env->pc = LEON3_PROM_OFFSET; | |
314 | env->npc = LEON3_PROM_OFFSET + 4; | |
315 | reset_info->entry = LEON3_PROM_OFFSET; | |
b04d9890 FC |
316 | } |
317 | } | |
318 | ||
319 | /* Allocate timers */ | |
948caec8 KF |
320 | dev = qdev_create(NULL, TYPE_GRLIB_GPTIMER); |
321 | qdev_prop_set_uint32(dev, "nr-timers", LEON3_TIMER_COUNT); | |
322 | qdev_prop_set_uint32(dev, "frequency", CPU_CLK); | |
323 | qdev_prop_set_uint32(dev, "irq-line", LEON3_TIMER_IRQ); | |
324 | qdev_init_nofail(dev); | |
325 | ||
326 | sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, LEON3_TIMER_OFFSET); | |
327 | for (i = 0; i < LEON3_TIMER_COUNT; i++) { | |
328 | sysbus_connect_irq(SYS_BUS_DEVICE(dev), i, | |
329 | cpu_irqs[LEON3_TIMER_IRQ + i]); | |
330 | } | |
b04d9890 | 331 | |
162abf1a KF |
332 | grlib_apb_pnp_add_entry(apb_pnp, LEON3_TIMER_OFFSET, 0xFFF, |
333 | GRLIB_VENDOR_GAISLER, GRLIB_GPTIMER_DEV, | |
334 | 0, LEON3_TIMER_IRQ, GRLIB_APBIO_AREA); | |
335 | ||
b04d9890 | 336 | /* Allocate uart */ |
9bca0edb | 337 | if (serial_hd(0)) { |
b70447aa KF |
338 | dev = qdev_create(NULL, TYPE_GRLIB_APB_UART); |
339 | qdev_prop_set_chr(dev, "chrdev", serial_hd(0)); | |
340 | qdev_init_nofail(dev); | |
341 | sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, LEON3_UART_OFFSET); | |
342 | sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, cpu_irqs[LEON3_UART_IRQ]); | |
162abf1a KF |
343 | grlib_apb_pnp_add_entry(apb_pnp, LEON3_UART_OFFSET, 0xFFF, |
344 | GRLIB_VENDOR_GAISLER, GRLIB_APBUART_DEV, 1, | |
345 | LEON3_UART_IRQ, GRLIB_APBIO_AREA); | |
b04d9890 FC |
346 | } |
347 | } | |
348 | ||
e264d29d | 349 | static void leon3_generic_machine_init(MachineClass *mc) |
b04d9890 | 350 | { |
e264d29d EH |
351 | mc->desc = "Leon-3 generic"; |
352 | mc->init = leon3_generic_hw_init; | |
e9135ab3 | 353 | mc->default_cpu_type = SPARC_CPU_TYPE_NAME("LEON3"); |
b04d9890 FC |
354 | } |
355 | ||
e264d29d | 356 | DEFINE_MACHINE("leon3_generic", leon3_generic_machine_init) |