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hw/riscv: sifive_u: Add reset functionality
[qemu/ar7.git] / hw / riscv / sifive_u.c
blobb9d2185c04ef31799e31f2a9847f2b16caa34fea
1 /*
2 * QEMU RISC-V Board Compatible with SiFive Freedom U SDK
3 *
4 * Copyright (c) 2016-2017 Sagar Karandikar, sagark@eecs.berkeley.edu
5 * Copyright (c) 2017 SiFive, Inc.
6 * Copyright (c) 2019 Bin Meng <bmeng.cn@gmail.com>
7 *
8 * Provides a board compatible with the SiFive Freedom U SDK:
9 *
10 * 0) UART
11 * 1) CLINT (Core Level Interruptor)
12 * 2) PLIC (Platform Level Interrupt Controller)
13 * 3) PRCI (Power, Reset, Clock, Interrupt)
14 * 4) GPIO (General Purpose Input/Output Controller)
15 * 5) OTP (One-Time Programmable) memory with stored serial number
16 * 6) GEM (Gigabit Ethernet Controller) and management block
17 *
18 * This board currently generates devicetree dynamically that indicates at least
19 * two harts and up to five harts.
20 *
21 * This program is free software; you can redistribute it and/or modify it
22 * under the terms and conditions of the GNU General Public License,
23 * version 2 or later, as published by the Free Software Foundation.
24 *
25 * This program is distributed in the hope it will be useful, but WITHOUT
26 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
27 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
28 * more details.
29 *
30 * You should have received a copy of the GNU General Public License along with
31 * this program. If not, see <http://www.gnu.org/licenses/>.
32 */
33
34 #include "qemu/osdep.h"
35 #include "qemu/log.h"
36 #include "qemu/error-report.h"
37 #include "qapi/error.h"
38 #include "qapi/visitor.h"
39 #include "hw/boards.h"
40 #include "hw/irq.h"
41 #include "hw/loader.h"
42 #include "hw/sysbus.h"
43 #include "hw/char/serial.h"
44 #include "hw/cpu/cluster.h"
45 #include "hw/misc/unimp.h"
46 #include "target/riscv/cpu.h"
47 #include "hw/riscv/riscv_hart.h"
48 #include "hw/riscv/sifive_plic.h"
49 #include "hw/riscv/sifive_clint.h"
50 #include "hw/riscv/sifive_uart.h"
51 #include "hw/riscv/sifive_u.h"
52 #include "hw/riscv/boot.h"
53 #include "chardev/char.h"
54 #include "net/eth.h"
55 #include "sysemu/arch_init.h"
56 #include "sysemu/device_tree.h"
57 #include "sysemu/runstate.h"
58 #include "sysemu/sysemu.h"
59 #include "exec/address-spaces.h"
60
61 #include <libfdt.h>
62
63 #if defined(TARGET_RISCV32)
64 # define BIOS_FILENAME "opensbi-riscv32-sifive_u-fw_jump.bin"
65 #else
66 # define BIOS_FILENAME "opensbi-riscv64-sifive_u-fw_jump.bin"
67 #endif
68
69 static const struct MemmapEntry {
70 hwaddr base;
71 hwaddr size;
72 } sifive_u_memmap[] = {
73 [SIFIVE_U_DEBUG] = { 0x0, 0x100 },
74 [SIFIVE_U_MROM] = { 0x1000, 0x11000 },
75 [SIFIVE_U_CLINT] = { 0x2000000, 0x10000 },
76 [SIFIVE_U_L2LIM] = { 0x8000000, 0x2000000 },
77 [SIFIVE_U_PLIC] = { 0xc000000, 0x4000000 },
78 [SIFIVE_U_PRCI] = { 0x10000000, 0x1000 },
79 [SIFIVE_U_UART0] = { 0x10010000, 0x1000 },
80 [SIFIVE_U_UART1] = { 0x10011000, 0x1000 },
81 [SIFIVE_U_GPIO] = { 0x10060000, 0x1000 },
82 [SIFIVE_U_OTP] = { 0x10070000, 0x1000 },
83 [SIFIVE_U_FLASH0] = { 0x20000000, 0x10000000 },
84 [SIFIVE_U_DRAM] = { 0x80000000, 0x0 },
85 [SIFIVE_U_GEM] = { 0x10090000, 0x2000 },
86 [SIFIVE_U_GEM_MGMT] = { 0x100a0000, 0x1000 },
87 };
88
89 #define OTP_SERIAL 1
90 #define GEM_REVISION 0x10070109
91
92 static void create_fdt(SiFiveUState *s, const struct MemmapEntry *memmap,
93 uint64_t mem_size, const char *cmdline)
94 {
95 MachineState *ms = MACHINE(qdev_get_machine());
96 void *fdt;
97 int cpu;
98 uint32_t *cells;
99 char *nodename;
100 char ethclk_names[] = "pclk\0hclk";
101 uint32_t plic_phandle, prci_phandle, gpio_phandle, phandle = 1;
102 uint32_t hfclk_phandle, rtcclk_phandle, phy_phandle;
103
104 fdt = s->fdt = create_device_tree(&s->fdt_size);
105 if (!fdt) {
106 error_report("create_device_tree() failed");
107 exit(1);
108 }
109
110 qemu_fdt_setprop_string(fdt, "/", "model", "SiFive HiFive Unleashed A00");
111 qemu_fdt_setprop_string(fdt, "/", "compatible",
112 "sifive,hifive-unleashed-a00");
113 qemu_fdt_setprop_cell(fdt, "/", "#size-cells", 0x2);
114 qemu_fdt_setprop_cell(fdt, "/", "#address-cells", 0x2);
115
116 qemu_fdt_add_subnode(fdt, "/soc");
117 qemu_fdt_setprop(fdt, "/soc", "ranges", NULL, 0);
118 qemu_fdt_setprop_string(fdt, "/soc", "compatible", "simple-bus");
119 qemu_fdt_setprop_cell(fdt, "/soc", "#size-cells", 0x2);
120 qemu_fdt_setprop_cell(fdt, "/soc", "#address-cells", 0x2);
121
122 hfclk_phandle = phandle++;
123 nodename = g_strdup_printf("/hfclk");
124 qemu_fdt_add_subnode(fdt, nodename);
125 qemu_fdt_setprop_cell(fdt, nodename, "phandle", hfclk_phandle);
126 qemu_fdt_setprop_string(fdt, nodename, "clock-output-names", "hfclk");
127 qemu_fdt_setprop_cell(fdt, nodename, "clock-frequency",
128 SIFIVE_U_HFCLK_FREQ);
129 qemu_fdt_setprop_string(fdt, nodename, "compatible", "fixed-clock");
130 qemu_fdt_setprop_cell(fdt, nodename, "#clock-cells", 0x0);
131 g_free(nodename);
132
133 rtcclk_phandle = phandle++;
134 nodename = g_strdup_printf("/rtcclk");
135 qemu_fdt_add_subnode(fdt, nodename);
136 qemu_fdt_setprop_cell(fdt, nodename, "phandle", rtcclk_phandle);
137 qemu_fdt_setprop_string(fdt, nodename, "clock-output-names", "rtcclk");
138 qemu_fdt_setprop_cell(fdt, nodename, "clock-frequency",
139 SIFIVE_U_RTCCLK_FREQ);
140 qemu_fdt_setprop_string(fdt, nodename, "compatible", "fixed-clock");
141 qemu_fdt_setprop_cell(fdt, nodename, "#clock-cells", 0x0);
142 g_free(nodename);
143
144 nodename = g_strdup_printf("/memory@%lx",
145 (long)memmap[SIFIVE_U_DRAM].base);
146 qemu_fdt_add_subnode(fdt, nodename);
147 qemu_fdt_setprop_cells(fdt, nodename, "reg",
148 memmap[SIFIVE_U_DRAM].base >> 32, memmap[SIFIVE_U_DRAM].base,
149 mem_size >> 32, mem_size);
150 qemu_fdt_setprop_string(fdt, nodename, "device_type", "memory");
151 g_free(nodename);
152
153 qemu_fdt_add_subnode(fdt, "/cpus");
154 qemu_fdt_setprop_cell(fdt, "/cpus", "timebase-frequency",
155 SIFIVE_CLINT_TIMEBASE_FREQ);
156 qemu_fdt_setprop_cell(fdt, "/cpus", "#size-cells", 0x0);
157 qemu_fdt_setprop_cell(fdt, "/cpus", "#address-cells", 0x1);
158
159 for (cpu = ms->smp.cpus - 1; cpu >= 0; cpu--) {
160 int cpu_phandle = phandle++;
161 nodename = g_strdup_printf("/cpus/cpu@%d", cpu);
162 char *intc = g_strdup_printf("/cpus/cpu@%d/interrupt-controller", cpu);
163 char *isa;
164 qemu_fdt_add_subnode(fdt, nodename);
165 /* cpu 0 is the management hart that does not have mmu */
166 if (cpu != 0) {
167 #if defined(TARGET_RISCV32)
168 qemu_fdt_setprop_string(fdt, nodename, "mmu-type", "riscv,sv32");
169 #else
170 qemu_fdt_setprop_string(fdt, nodename, "mmu-type", "riscv,sv48");
171 #endif
172 isa = riscv_isa_string(&s->soc.u_cpus.harts[cpu - 1]);
173 } else {
174 isa = riscv_isa_string(&s->soc.e_cpus.harts[0]);
175 }
176 qemu_fdt_setprop_string(fdt, nodename, "riscv,isa", isa);
177 qemu_fdt_setprop_string(fdt, nodename, "compatible", "riscv");
178 qemu_fdt_setprop_string(fdt, nodename, "status", "okay");
179 qemu_fdt_setprop_cell(fdt, nodename, "reg", cpu);
180 qemu_fdt_setprop_string(fdt, nodename, "device_type", "cpu");
181 qemu_fdt_add_subnode(fdt, intc);
182 qemu_fdt_setprop_cell(fdt, intc, "phandle", cpu_phandle);
183 qemu_fdt_setprop_string(fdt, intc, "compatible", "riscv,cpu-intc");
184 qemu_fdt_setprop(fdt, intc, "interrupt-controller", NULL, 0);
185 qemu_fdt_setprop_cell(fdt, intc, "#interrupt-cells", 1);
186 g_free(isa);
187 g_free(intc);
188 g_free(nodename);
189 }
190
191 cells = g_new0(uint32_t, ms->smp.cpus * 4);
192 for (cpu = 0; cpu < ms->smp.cpus; cpu++) {
193 nodename =
194 g_strdup_printf("/cpus/cpu@%d/interrupt-controller", cpu);
195 uint32_t intc_phandle = qemu_fdt_get_phandle(fdt, nodename);
196 cells[cpu * 4 + 0] = cpu_to_be32(intc_phandle);
197 cells[cpu * 4 + 1] = cpu_to_be32(IRQ_M_SOFT);
198 cells[cpu * 4 + 2] = cpu_to_be32(intc_phandle);
199 cells[cpu * 4 + 3] = cpu_to_be32(IRQ_M_TIMER);
200 g_free(nodename);
201 }
202 nodename = g_strdup_printf("/soc/clint@%lx",
203 (long)memmap[SIFIVE_U_CLINT].base);
204 qemu_fdt_add_subnode(fdt, nodename);
205 qemu_fdt_setprop_string(fdt, nodename, "compatible", "riscv,clint0");
206 qemu_fdt_setprop_cells(fdt, nodename, "reg",
207 0x0, memmap[SIFIVE_U_CLINT].base,
208 0x0, memmap[SIFIVE_U_CLINT].size);
209 qemu_fdt_setprop(fdt, nodename, "interrupts-extended",
210 cells, ms->smp.cpus * sizeof(uint32_t) * 4);
211 g_free(cells);
212 g_free(nodename);
213
214 nodename = g_strdup_printf("/soc/otp@%lx",
215 (long)memmap[SIFIVE_U_OTP].base);
216 qemu_fdt_add_subnode(fdt, nodename);
217 qemu_fdt_setprop_cell(fdt, nodename, "fuse-count", SIFIVE_U_OTP_REG_SIZE);
218 qemu_fdt_setprop_cells(fdt, nodename, "reg",
219 0x0, memmap[SIFIVE_U_OTP].base,
220 0x0, memmap[SIFIVE_U_OTP].size);
221 qemu_fdt_setprop_string(fdt, nodename, "compatible",
222 "sifive,fu540-c000-otp");
223 g_free(nodename);
224
225 prci_phandle = phandle++;
226 nodename = g_strdup_printf("/soc/clock-controller@%lx",
227 (long)memmap[SIFIVE_U_PRCI].base);
228 qemu_fdt_add_subnode(fdt, nodename);
229 qemu_fdt_setprop_cell(fdt, nodename, "phandle", prci_phandle);
230 qemu_fdt_setprop_cell(fdt, nodename, "#clock-cells", 0x1);
231 qemu_fdt_setprop_cells(fdt, nodename, "clocks",
232 hfclk_phandle, rtcclk_phandle);
233 qemu_fdt_setprop_cells(fdt, nodename, "reg",
234 0x0, memmap[SIFIVE_U_PRCI].base,
235 0x0, memmap[SIFIVE_U_PRCI].size);
236 qemu_fdt_setprop_string(fdt, nodename, "compatible",
237 "sifive,fu540-c000-prci");
238 g_free(nodename);
239
240 plic_phandle = phandle++;
241 cells = g_new0(uint32_t, ms->smp.cpus * 4 - 2);
242 for (cpu = 0; cpu < ms->smp.cpus; cpu++) {
243 nodename =
244 g_strdup_printf("/cpus/cpu@%d/interrupt-controller", cpu);
245 uint32_t intc_phandle = qemu_fdt_get_phandle(fdt, nodename);
246 /* cpu 0 is the management hart that does not have S-mode */
247 if (cpu == 0) {
248 cells[0] = cpu_to_be32(intc_phandle);
249 cells[1] = cpu_to_be32(IRQ_M_EXT);
250 } else {
251 cells[cpu * 4 - 2] = cpu_to_be32(intc_phandle);
252 cells[cpu * 4 - 1] = cpu_to_be32(IRQ_M_EXT);
253 cells[cpu * 4 + 0] = cpu_to_be32(intc_phandle);
254 cells[cpu * 4 + 1] = cpu_to_be32(IRQ_S_EXT);
255 }
256 g_free(nodename);
257 }
258 nodename = g_strdup_printf("/soc/interrupt-controller@%lx",
259 (long)memmap[SIFIVE_U_PLIC].base);
260 qemu_fdt_add_subnode(fdt, nodename);
261 qemu_fdt_setprop_cell(fdt, nodename, "#interrupt-cells", 1);
262 qemu_fdt_setprop_string(fdt, nodename, "compatible", "riscv,plic0");
263 qemu_fdt_setprop(fdt, nodename, "interrupt-controller", NULL, 0);
264 qemu_fdt_setprop(fdt, nodename, "interrupts-extended",
265 cells, (ms->smp.cpus * 4 - 2) * sizeof(uint32_t));
266 qemu_fdt_setprop_cells(fdt, nodename, "reg",
267 0x0, memmap[SIFIVE_U_PLIC].base,
268 0x0, memmap[SIFIVE_U_PLIC].size);
269 qemu_fdt_setprop_cell(fdt, nodename, "riscv,ndev", 0x35);
270 qemu_fdt_setprop_cell(fdt, nodename, "phandle", plic_phandle);
271 plic_phandle = qemu_fdt_get_phandle(fdt, nodename);
272 g_free(cells);
273 g_free(nodename);
274
275 gpio_phandle = phandle++;
276 nodename = g_strdup_printf("/soc/gpio@%lx",
277 (long)memmap[SIFIVE_U_GPIO].base);
278 qemu_fdt_add_subnode(fdt, nodename);
279 qemu_fdt_setprop_cell(fdt, nodename, "phandle", gpio_phandle);
280 qemu_fdt_setprop_cells(fdt, nodename, "clocks",
281 prci_phandle, PRCI_CLK_TLCLK);
282 qemu_fdt_setprop_cell(fdt, nodename, "#interrupt-cells", 2);
283 qemu_fdt_setprop(fdt, nodename, "interrupt-controller", NULL, 0);
284 qemu_fdt_setprop_cell(fdt, nodename, "#gpio-cells", 2);
285 qemu_fdt_setprop(fdt, nodename, "gpio-controller", NULL, 0);
286 qemu_fdt_setprop_cells(fdt, nodename, "reg",
287 0x0, memmap[SIFIVE_U_GPIO].base,
288 0x0, memmap[SIFIVE_U_GPIO].size);
289 qemu_fdt_setprop_cells(fdt, nodename, "interrupts", SIFIVE_U_GPIO_IRQ0,
290 SIFIVE_U_GPIO_IRQ1, SIFIVE_U_GPIO_IRQ2, SIFIVE_U_GPIO_IRQ3,
291 SIFIVE_U_GPIO_IRQ4, SIFIVE_U_GPIO_IRQ5, SIFIVE_U_GPIO_IRQ6,
292 SIFIVE_U_GPIO_IRQ7, SIFIVE_U_GPIO_IRQ8, SIFIVE_U_GPIO_IRQ9,
293 SIFIVE_U_GPIO_IRQ10, SIFIVE_U_GPIO_IRQ11, SIFIVE_U_GPIO_IRQ12,
294 SIFIVE_U_GPIO_IRQ13, SIFIVE_U_GPIO_IRQ14, SIFIVE_U_GPIO_IRQ15);
295 qemu_fdt_setprop_cell(fdt, nodename, "interrupt-parent", plic_phandle);
296 qemu_fdt_setprop_string(fdt, nodename, "compatible", "sifive,gpio0");
297 g_free(nodename);
298
299 nodename = g_strdup_printf("/gpio-restart");
300 qemu_fdt_add_subnode(fdt, nodename);
301 qemu_fdt_setprop_cells(fdt, nodename, "gpios", gpio_phandle, 10, 1);
302 qemu_fdt_setprop_string(fdt, nodename, "compatible", "gpio-restart");
303 g_free(nodename);
304
305 phy_phandle = phandle++;
306 nodename = g_strdup_printf("/soc/ethernet@%lx",
307 (long)memmap[SIFIVE_U_GEM].base);
308 qemu_fdt_add_subnode(fdt, nodename);
309 qemu_fdt_setprop_string(fdt, nodename, "compatible",
310 "sifive,fu540-c000-gem");
311 qemu_fdt_setprop_cells(fdt, nodename, "reg",
312 0x0, memmap[SIFIVE_U_GEM].base,
313 0x0, memmap[SIFIVE_U_GEM].size,
314 0x0, memmap[SIFIVE_U_GEM_MGMT].base,
315 0x0, memmap[SIFIVE_U_GEM_MGMT].size);
316 qemu_fdt_setprop_string(fdt, nodename, "reg-names", "control");
317 qemu_fdt_setprop_string(fdt, nodename, "phy-mode", "gmii");
318 qemu_fdt_setprop_cell(fdt, nodename, "phy-handle", phy_phandle);
319 qemu_fdt_setprop_cell(fdt, nodename, "interrupt-parent", plic_phandle);
320 qemu_fdt_setprop_cell(fdt, nodename, "interrupts", SIFIVE_U_GEM_IRQ);
321 qemu_fdt_setprop_cells(fdt, nodename, "clocks",
322 prci_phandle, PRCI_CLK_GEMGXLPLL, prci_phandle, PRCI_CLK_GEMGXLPLL);
323 qemu_fdt_setprop(fdt, nodename, "clock-names", ethclk_names,
324 sizeof(ethclk_names));
325 qemu_fdt_setprop(fdt, nodename, "local-mac-address",
326 s->soc.gem.conf.macaddr.a, ETH_ALEN);
327 qemu_fdt_setprop_cell(fdt, nodename, "#address-cells", 1);
328 qemu_fdt_setprop_cell(fdt, nodename, "#size-cells", 0);
329
330 qemu_fdt_add_subnode(fdt, "/aliases");
331 qemu_fdt_setprop_string(fdt, "/aliases", "ethernet0", nodename);
332
333 g_free(nodename);
334
335 nodename = g_strdup_printf("/soc/ethernet@%lx/ethernet-phy@0",
336 (long)memmap[SIFIVE_U_GEM].base);
337 qemu_fdt_add_subnode(fdt, nodename);
338 qemu_fdt_setprop_cell(fdt, nodename, "phandle", phy_phandle);
339 qemu_fdt_setprop_cell(fdt, nodename, "reg", 0x0);
340 g_free(nodename);
341
342 nodename = g_strdup_printf("/soc/serial@%lx",
343 (long)memmap[SIFIVE_U_UART0].base);
344 qemu_fdt_add_subnode(fdt, nodename);
345 qemu_fdt_setprop_string(fdt, nodename, "compatible", "sifive,uart0");
346 qemu_fdt_setprop_cells(fdt, nodename, "reg",
347 0x0, memmap[SIFIVE_U_UART0].base,
348 0x0, memmap[SIFIVE_U_UART0].size);
349 qemu_fdt_setprop_cells(fdt, nodename, "clocks",
350 prci_phandle, PRCI_CLK_TLCLK);
351 qemu_fdt_setprop_cell(fdt, nodename, "interrupt-parent", plic_phandle);
352 qemu_fdt_setprop_cell(fdt, nodename, "interrupts", SIFIVE_U_UART0_IRQ);
353
354 qemu_fdt_add_subnode(fdt, "/chosen");
355 qemu_fdt_setprop_string(fdt, "/chosen", "stdout-path", nodename);
356 if (cmdline) {
357 qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline);
358 }
359
360 qemu_fdt_setprop_string(fdt, "/aliases", "serial0", nodename);
361
362 g_free(nodename);
363 }
364
365 static void sifive_u_machine_reset(void *opaque, int n, int level)
366 {
367 /* gpio pin active low triggers reset */
368 if (!level) {
369 qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
370 }
371 }
372
373 static void sifive_u_machine_init(MachineState *machine)
374 {
375 const struct MemmapEntry *memmap = sifive_u_memmap;
376 SiFiveUState *s = RISCV_U_MACHINE(machine);
377 MemoryRegion *system_memory = get_system_memory();
378 MemoryRegion *main_mem = g_new(MemoryRegion, 1);
379 MemoryRegion *flash0 = g_new(MemoryRegion, 1);
380 target_ulong start_addr = memmap[SIFIVE_U_DRAM].base;
381 int i;
382
383 /* Initialize SoC */
384 object_initialize_child(OBJECT(machine), "soc", &s->soc, TYPE_RISCV_U_SOC);
385 object_property_set_uint(OBJECT(&s->soc), s->serial, "serial",
386 &error_abort);
387 qdev_realize(DEVICE(&s->soc), NULL, &error_abort);
388
389 /* register RAM */
390 memory_region_init_ram(main_mem, NULL, "riscv.sifive.u.ram",
391 machine->ram_size, &error_fatal);
392 memory_region_add_subregion(system_memory, memmap[SIFIVE_U_DRAM].base,
393 main_mem);
394
395 /* register QSPI0 Flash */
396 memory_region_init_ram(flash0, NULL, "riscv.sifive.u.flash0",
397 memmap[SIFIVE_U_FLASH0].size, &error_fatal);
398 memory_region_add_subregion(system_memory, memmap[SIFIVE_U_FLASH0].base,
399 flash0);
400
401 /* register gpio-restart */
402 qdev_connect_gpio_out(DEVICE(&(s->soc.gpio)), 10,
403 qemu_allocate_irq(sifive_u_machine_reset, NULL, 0));
404
405 /* create device tree */
406 create_fdt(s, memmap, machine->ram_size, machine->kernel_cmdline);
407
408 riscv_find_and_load_firmware(machine, BIOS_FILENAME,
409 memmap[SIFIVE_U_DRAM].base, NULL);
410
411 if (machine->kernel_filename) {
412 uint64_t kernel_entry = riscv_load_kernel(machine->kernel_filename,
413 NULL);
414
415 if (machine->initrd_filename) {
416 hwaddr start;
417 hwaddr end = riscv_load_initrd(machine->initrd_filename,
418 machine->ram_size, kernel_entry,
419 &start);
420 qemu_fdt_setprop_cell(s->fdt, "/chosen",
421 "linux,initrd-start", start);
422 qemu_fdt_setprop_cell(s->fdt, "/chosen", "linux,initrd-end",
423 end);
424 }
425 }
426
427 if (s->start_in_flash) {
428 start_addr = memmap[SIFIVE_U_FLASH0].base;
429 }
430
431 /* reset vector */
432 uint32_t reset_vec[8] = {
433 0x00000297, /* 1: auipc t0, %pcrel_hi(dtb) */
434 0x02028593, /* addi a1, t0, %pcrel_lo(1b) */
435 0xf1402573, /* csrr a0, mhartid */
436 #if defined(TARGET_RISCV32)
437 0x0182a283, /* lw t0, 24(t0) */
438 #elif defined(TARGET_RISCV64)
439 0x0182b283, /* ld t0, 24(t0) */
440 #endif
441 0x00028067, /* jr t0 */
442 0x00000000,
443 start_addr, /* start: .dword */
444 0x00000000,
445 /* dtb: */
446 };
447
448 /* copy in the reset vector in little_endian byte order */
449 for (i = 0; i < sizeof(reset_vec) >> 2; i++) {
450 reset_vec[i] = cpu_to_le32(reset_vec[i]);
451 }
452 rom_add_blob_fixed_as("mrom.reset", reset_vec, sizeof(reset_vec),
453 memmap[SIFIVE_U_MROM].base, &address_space_memory);
454
455 /* copy in the device tree */
456 if (fdt_pack(s->fdt) || fdt_totalsize(s->fdt) >
457 memmap[SIFIVE_U_MROM].size - sizeof(reset_vec)) {
458 error_report("not enough space to store device-tree");
459 exit(1);
460 }
461 qemu_fdt_dumpdtb(s->fdt, fdt_totalsize(s->fdt));
462 rom_add_blob_fixed_as("mrom.fdt", s->fdt, fdt_totalsize(s->fdt),
463 memmap[SIFIVE_U_MROM].base + sizeof(reset_vec),
464 &address_space_memory);
465 }
466
467 static bool sifive_u_machine_get_start_in_flash(Object *obj, Error **errp)
468 {
469 SiFiveUState *s = RISCV_U_MACHINE(obj);
470
471 return s->start_in_flash;
472 }
473
474 static void sifive_u_machine_set_start_in_flash(Object *obj, bool value, Error **errp)
475 {
476 SiFiveUState *s = RISCV_U_MACHINE(obj);
477
478 s->start_in_flash = value;
479 }
480
481 static void sifive_u_machine_get_serial(Object *obj, Visitor *v, const char *name,
482 void *opaque, Error **errp)
483 {
484 visit_type_uint32(v, name, (uint32_t *)opaque, errp);
485 }
486
487 static void sifive_u_machine_set_serial(Object *obj, Visitor *v, const char *name,
488 void *opaque, Error **errp)
489 {
490 visit_type_uint32(v, name, (uint32_t *)opaque, errp);
491 }
492
493 static void sifive_u_machine_instance_init(Object *obj)
494 {
495 SiFiveUState *s = RISCV_U_MACHINE(obj);
496
497 s->start_in_flash = false;
498 object_property_add_bool(obj, "start-in-flash",
499 sifive_u_machine_get_start_in_flash,
500 sifive_u_machine_set_start_in_flash);
501 object_property_set_description(obj, "start-in-flash",
502 "Set on to tell QEMU's ROM to jump to "
503 "flash. Otherwise QEMU will jump to DRAM");
504
505 s->serial = OTP_SERIAL;
506 object_property_add(obj, "serial", "uint32",
507 sifive_u_machine_get_serial,
508 sifive_u_machine_set_serial, NULL, &s->serial);
509 object_property_set_description(obj, "serial", "Board serial number");
510 }
511
512 static void sifive_u_machine_class_init(ObjectClass *oc, void *data)
513 {
514 MachineClass *mc = MACHINE_CLASS(oc);
515
516 mc->desc = "RISC-V Board compatible with SiFive U SDK";
517 mc->init = sifive_u_machine_init;
518 mc->max_cpus = SIFIVE_U_MANAGEMENT_CPU_COUNT + SIFIVE_U_COMPUTE_CPU_COUNT;
519 mc->min_cpus = SIFIVE_U_MANAGEMENT_CPU_COUNT + 1;
520 mc->default_cpus = mc->min_cpus;
521 }
522
523 static const TypeInfo sifive_u_machine_typeinfo = {
524 .name = MACHINE_TYPE_NAME("sifive_u"),
525 .parent = TYPE_MACHINE,
526 .class_init = sifive_u_machine_class_init,
527 .instance_init = sifive_u_machine_instance_init,
528 .instance_size = sizeof(SiFiveUState),
529 };
530
531 static void sifive_u_machine_init_register_types(void)
532 {
533 type_register_static(&sifive_u_machine_typeinfo);
534 }
535
536 type_init(sifive_u_machine_init_register_types)
537
538 static void sifive_u_soc_instance_init(Object *obj)
539 {
540 MachineState *ms = MACHINE(qdev_get_machine());
541 SiFiveUSoCState *s = RISCV_U_SOC(obj);
542
543 object_initialize_child(obj, "e-cluster", &s->e_cluster, TYPE_CPU_CLUSTER);
544 qdev_prop_set_uint32(DEVICE(&s->e_cluster), "cluster-id", 0);
545
546 object_initialize_child(OBJECT(&s->e_cluster), "e-cpus", &s->e_cpus,
547 TYPE_RISCV_HART_ARRAY);
548 qdev_prop_set_uint32(DEVICE(&s->e_cpus), "num-harts", 1);
549 qdev_prop_set_uint32(DEVICE(&s->e_cpus), "hartid-base", 0);
550 qdev_prop_set_string(DEVICE(&s->e_cpus), "cpu-type", SIFIVE_E_CPU);
551
552 object_initialize_child(obj, "u-cluster", &s->u_cluster, TYPE_CPU_CLUSTER);
553 qdev_prop_set_uint32(DEVICE(&s->u_cluster), "cluster-id", 1);
554
555 object_initialize_child(OBJECT(&s->u_cluster), "u-cpus", &s->u_cpus,
556 TYPE_RISCV_HART_ARRAY);
557 qdev_prop_set_uint32(DEVICE(&s->u_cpus), "num-harts", ms->smp.cpus - 1);
558 qdev_prop_set_uint32(DEVICE(&s->u_cpus), "hartid-base", 1);
559 qdev_prop_set_string(DEVICE(&s->u_cpus), "cpu-type", SIFIVE_U_CPU);
560
561 object_initialize_child(obj, "prci", &s->prci, TYPE_SIFIVE_U_PRCI);
562 object_initialize_child(obj, "otp", &s->otp, TYPE_SIFIVE_U_OTP);
563 object_initialize_child(obj, "gem", &s->gem, TYPE_CADENCE_GEM);
564 object_initialize_child(obj, "gpio", &s->gpio, TYPE_SIFIVE_GPIO);
565 }
566
567 static void sifive_u_soc_realize(DeviceState *dev, Error **errp)
568 {
569 MachineState *ms = MACHINE(qdev_get_machine());
570 SiFiveUSoCState *s = RISCV_U_SOC(dev);
571 const struct MemmapEntry *memmap = sifive_u_memmap;
572 MemoryRegion *system_memory = get_system_memory();
573 MemoryRegion *mask_rom = g_new(MemoryRegion, 1);
574 MemoryRegion *l2lim_mem = g_new(MemoryRegion, 1);
575 char *plic_hart_config;
576 size_t plic_hart_config_len;
577 int i;
578 Error *err = NULL;
579 NICInfo *nd = &nd_table[0];
580
581 sysbus_realize(SYS_BUS_DEVICE(&s->e_cpus), &error_abort);
582 sysbus_realize(SYS_BUS_DEVICE(&s->u_cpus), &error_abort);
583 /*
584 * The cluster must be realized after the RISC-V hart array container,
585 * as the container's CPU object is only created on realize, and the
586 * CPU must exist and have been parented into the cluster before the
587 * cluster is realized.
588 */
589 qdev_realize(DEVICE(&s->e_cluster), NULL, &error_abort);
590 qdev_realize(DEVICE(&s->u_cluster), NULL, &error_abort);
591
592 /* boot rom */
593 memory_region_init_rom(mask_rom, OBJECT(dev), "riscv.sifive.u.mrom",
594 memmap[SIFIVE_U_MROM].size, &error_fatal);
595 memory_region_add_subregion(system_memory, memmap[SIFIVE_U_MROM].base,
596 mask_rom);
597
598 /*
599 * Add L2-LIM at reset size.
600 * This should be reduced in size as the L2 Cache Controller WayEnable
601 * register is incremented. Unfortunately I don't see a nice (or any) way
602 * to handle reducing or blocking out the L2 LIM while still allowing it
603 * be re returned to all enabled after a reset. For the time being, just
604 * leave it enabled all the time. This won't break anything, but will be
605 * too generous to misbehaving guests.
606 */
607 memory_region_init_ram(l2lim_mem, NULL, "riscv.sifive.u.l2lim",
608 memmap[SIFIVE_U_L2LIM].size, &error_fatal);
609 memory_region_add_subregion(system_memory, memmap[SIFIVE_U_L2LIM].base,
610 l2lim_mem);
611
612 /* create PLIC hart topology configuration string */
613 plic_hart_config_len = (strlen(SIFIVE_U_PLIC_HART_CONFIG) + 1) *
614 ms->smp.cpus;
615 plic_hart_config = g_malloc0(plic_hart_config_len);
616 for (i = 0; i < ms->smp.cpus; i++) {
617 if (i != 0) {
618 strncat(plic_hart_config, "," SIFIVE_U_PLIC_HART_CONFIG,
619 plic_hart_config_len);
620 } else {
621 strncat(plic_hart_config, "M", plic_hart_config_len);
622 }
623 plic_hart_config_len -= (strlen(SIFIVE_U_PLIC_HART_CONFIG) + 1);
624 }
625
626 /* MMIO */
627 s->plic = sifive_plic_create(memmap[SIFIVE_U_PLIC].base,
628 plic_hart_config,
629 SIFIVE_U_PLIC_NUM_SOURCES,
630 SIFIVE_U_PLIC_NUM_PRIORITIES,
631 SIFIVE_U_PLIC_PRIORITY_BASE,
632 SIFIVE_U_PLIC_PENDING_BASE,
633 SIFIVE_U_PLIC_ENABLE_BASE,
634 SIFIVE_U_PLIC_ENABLE_STRIDE,
635 SIFIVE_U_PLIC_CONTEXT_BASE,
636 SIFIVE_U_PLIC_CONTEXT_STRIDE,
637 memmap[SIFIVE_U_PLIC].size);
638 g_free(plic_hart_config);
639 sifive_uart_create(system_memory, memmap[SIFIVE_U_UART0].base,
640 serial_hd(0), qdev_get_gpio_in(DEVICE(s->plic), SIFIVE_U_UART0_IRQ));
641 sifive_uart_create(system_memory, memmap[SIFIVE_U_UART1].base,
642 serial_hd(1), qdev_get_gpio_in(DEVICE(s->plic), SIFIVE_U_UART1_IRQ));
643 sifive_clint_create(memmap[SIFIVE_U_CLINT].base,
644 memmap[SIFIVE_U_CLINT].size, ms->smp.cpus,
645 SIFIVE_SIP_BASE, SIFIVE_TIMECMP_BASE, SIFIVE_TIME_BASE, false);
646
647 sysbus_realize(SYS_BUS_DEVICE(&s->prci), &err);
648 sysbus_mmio_map(SYS_BUS_DEVICE(&s->prci), 0, memmap[SIFIVE_U_PRCI].base);
649
650 qdev_prop_set_uint32(DEVICE(&s->gpio), "ngpio", 16);
651 sysbus_realize(SYS_BUS_DEVICE(&s->gpio), &err);
652 sysbus_mmio_map(SYS_BUS_DEVICE(&s->gpio), 0, memmap[SIFIVE_U_GPIO].base);
653
654 /* Pass all GPIOs to the SOC layer so they are available to the board */
655 qdev_pass_gpios(DEVICE(&s->gpio), dev, NULL);
656
657 /* Connect GPIO interrupts to the PLIC */
658 for (i = 0; i < 16; i++) {
659 sysbus_connect_irq(SYS_BUS_DEVICE(&s->gpio), i,
660 qdev_get_gpio_in(DEVICE(s->plic),
661 SIFIVE_U_GPIO_IRQ0 + i));
662 }
663
664 qdev_prop_set_uint32(DEVICE(&s->otp), "serial", s->serial);
665 sysbus_realize(SYS_BUS_DEVICE(&s->otp), &err);
666 sysbus_mmio_map(SYS_BUS_DEVICE(&s->otp), 0, memmap[SIFIVE_U_OTP].base);
667
668 if (nd->used) {
669 qemu_check_nic_model(nd, TYPE_CADENCE_GEM);
670 qdev_set_nic_properties(DEVICE(&s->gem), nd);
671 }
672 object_property_set_int(OBJECT(&s->gem), GEM_REVISION, "revision",
673 &error_abort);
674 sysbus_realize(SYS_BUS_DEVICE(&s->gem), &err);
675 if (err) {
676 error_propagate(errp, err);
677 return;
678 }
679 sysbus_mmio_map(SYS_BUS_DEVICE(&s->gem), 0, memmap[SIFIVE_U_GEM].base);
680 sysbus_connect_irq(SYS_BUS_DEVICE(&s->gem), 0,
681 qdev_get_gpio_in(DEVICE(s->plic), SIFIVE_U_GEM_IRQ));
682
683 create_unimplemented_device("riscv.sifive.u.gem-mgmt",
684 memmap[SIFIVE_U_GEM_MGMT].base, memmap[SIFIVE_U_GEM_MGMT].size);
685 }
686
687 static Property sifive_u_soc_props[] = {
688 DEFINE_PROP_UINT32("serial", SiFiveUSoCState, serial, OTP_SERIAL),
689 DEFINE_PROP_END_OF_LIST()
690 };
691
692 static void sifive_u_soc_class_init(ObjectClass *oc, void *data)
693 {
694 DeviceClass *dc = DEVICE_CLASS(oc);
695
696 device_class_set_props(dc, sifive_u_soc_props);
697 dc->realize = sifive_u_soc_realize;
698 /* Reason: Uses serial_hds in realize function, thus can't be used twice */
699 dc->user_creatable = false;
700 }
701
702 static const TypeInfo sifive_u_soc_type_info = {
703 .name = TYPE_RISCV_U_SOC,
704 .parent = TYPE_DEVICE,
705 .instance_size = sizeof(SiFiveUSoCState),
706 .instance_init = sifive_u_soc_instance_init,
707 .class_init = sifive_u_soc_class_init,
708 };
709
710 static void sifive_u_soc_register_types(void)
711 {
712 type_register_static(&sifive_u_soc_type_info);
713 }
714
715 type_init(sifive_u_soc_register_types)
AR7 emulation for QEMU