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tests/acceptance: Test the Arduino MEGA2560 board
[qemu/ar7.git] / hw / riscv / sifive_u.c
blob7851326988cd3bd5bfa31c29b914fbc9216fff54
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_GEM] = { 0x10090000, 0x2000 },
84 [SIFIVE_U_GEM_MGMT] = { 0x100a0000, 0x1000 },
85 [SIFIVE_U_DMC] = { 0x100b0000, 0x10000 },
86 [SIFIVE_U_FLASH0] = { 0x20000000, 0x10000000 },
87 [SIFIVE_U_DRAM] = { 0x80000000, 0x0 },
88 };
89
90 #define OTP_SERIAL 1
91 #define GEM_REVISION 0x10070109
92
93 static void create_fdt(SiFiveUState *s, const struct MemmapEntry *memmap,
94 uint64_t mem_size, const char *cmdline)
95 {
96 MachineState *ms = MACHINE(qdev_get_machine());
97 void *fdt;
98 int cpu;
99 uint32_t *cells;
100 char *nodename;
101 char ethclk_names[] = "pclk\0hclk";
102 uint32_t plic_phandle, prci_phandle, gpio_phandle, phandle = 1;
103 uint32_t hfclk_phandle, rtcclk_phandle, phy_phandle;
104
105 fdt = s->fdt = create_device_tree(&s->fdt_size);
106 if (!fdt) {
107 error_report("create_device_tree() failed");
108 exit(1);
109 }
110
111 qemu_fdt_setprop_string(fdt, "/", "model", "SiFive HiFive Unleashed A00");
112 qemu_fdt_setprop_string(fdt, "/", "compatible",
113 "sifive,hifive-unleashed-a00");
114 qemu_fdt_setprop_cell(fdt, "/", "#size-cells", 0x2);
115 qemu_fdt_setprop_cell(fdt, "/", "#address-cells", 0x2);
116
117 qemu_fdt_add_subnode(fdt, "/soc");
118 qemu_fdt_setprop(fdt, "/soc", "ranges", NULL, 0);
119 qemu_fdt_setprop_string(fdt, "/soc", "compatible", "simple-bus");
120 qemu_fdt_setprop_cell(fdt, "/soc", "#size-cells", 0x2);
121 qemu_fdt_setprop_cell(fdt, "/soc", "#address-cells", 0x2);
122
123 hfclk_phandle = phandle++;
124 nodename = g_strdup_printf("/hfclk");
125 qemu_fdt_add_subnode(fdt, nodename);
126 qemu_fdt_setprop_cell(fdt, nodename, "phandle", hfclk_phandle);
127 qemu_fdt_setprop_string(fdt, nodename, "clock-output-names", "hfclk");
128 qemu_fdt_setprop_cell(fdt, nodename, "clock-frequency",
129 SIFIVE_U_HFCLK_FREQ);
130 qemu_fdt_setprop_string(fdt, nodename, "compatible", "fixed-clock");
131 qemu_fdt_setprop_cell(fdt, nodename, "#clock-cells", 0x0);
132 g_free(nodename);
133
134 rtcclk_phandle = phandle++;
135 nodename = g_strdup_printf("/rtcclk");
136 qemu_fdt_add_subnode(fdt, nodename);
137 qemu_fdt_setprop_cell(fdt, nodename, "phandle", rtcclk_phandle);
138 qemu_fdt_setprop_string(fdt, nodename, "clock-output-names", "rtcclk");
139 qemu_fdt_setprop_cell(fdt, nodename, "clock-frequency",
140 SIFIVE_U_RTCCLK_FREQ);
141 qemu_fdt_setprop_string(fdt, nodename, "compatible", "fixed-clock");
142 qemu_fdt_setprop_cell(fdt, nodename, "#clock-cells", 0x0);
143 g_free(nodename);
144
145 nodename = g_strdup_printf("/memory@%lx",
146 (long)memmap[SIFIVE_U_DRAM].base);
147 qemu_fdt_add_subnode(fdt, nodename);
148 qemu_fdt_setprop_cells(fdt, nodename, "reg",
149 memmap[SIFIVE_U_DRAM].base >> 32, memmap[SIFIVE_U_DRAM].base,
150 mem_size >> 32, mem_size);
151 qemu_fdt_setprop_string(fdt, nodename, "device_type", "memory");
152 g_free(nodename);
153
154 qemu_fdt_add_subnode(fdt, "/cpus");
155 qemu_fdt_setprop_cell(fdt, "/cpus", "timebase-frequency",
156 SIFIVE_CLINT_TIMEBASE_FREQ);
157 qemu_fdt_setprop_cell(fdt, "/cpus", "#size-cells", 0x0);
158 qemu_fdt_setprop_cell(fdt, "/cpus", "#address-cells", 0x1);
159
160 for (cpu = ms->smp.cpus - 1; cpu >= 0; cpu--) {
161 int cpu_phandle = phandle++;
162 nodename = g_strdup_printf("/cpus/cpu@%d", cpu);
163 char *intc = g_strdup_printf("/cpus/cpu@%d/interrupt-controller", cpu);
164 char *isa;
165 qemu_fdt_add_subnode(fdt, nodename);
166 /* cpu 0 is the management hart that does not have mmu */
167 if (cpu != 0) {
168 #if defined(TARGET_RISCV32)
169 qemu_fdt_setprop_string(fdt, nodename, "mmu-type", "riscv,sv32");
170 #else
171 qemu_fdt_setprop_string(fdt, nodename, "mmu-type", "riscv,sv48");
172 #endif
173 isa = riscv_isa_string(&s->soc.u_cpus.harts[cpu - 1]);
174 } else {
175 isa = riscv_isa_string(&s->soc.e_cpus.harts[0]);
176 }
177 qemu_fdt_setprop_string(fdt, nodename, "riscv,isa", isa);
178 qemu_fdt_setprop_string(fdt, nodename, "compatible", "riscv");
179 qemu_fdt_setprop_string(fdt, nodename, "status", "okay");
180 qemu_fdt_setprop_cell(fdt, nodename, "reg", cpu);
181 qemu_fdt_setprop_string(fdt, nodename, "device_type", "cpu");
182 qemu_fdt_add_subnode(fdt, intc);
183 qemu_fdt_setprop_cell(fdt, intc, "phandle", cpu_phandle);
184 qemu_fdt_setprop_string(fdt, intc, "compatible", "riscv,cpu-intc");
185 qemu_fdt_setprop(fdt, intc, "interrupt-controller", NULL, 0);
186 qemu_fdt_setprop_cell(fdt, intc, "#interrupt-cells", 1);
187 g_free(isa);
188 g_free(intc);
189 g_free(nodename);
190 }
191
192 cells = g_new0(uint32_t, ms->smp.cpus * 4);
193 for (cpu = 0; cpu < ms->smp.cpus; cpu++) {
194 nodename =
195 g_strdup_printf("/cpus/cpu@%d/interrupt-controller", cpu);
196 uint32_t intc_phandle = qemu_fdt_get_phandle(fdt, nodename);
197 cells[cpu * 4 + 0] = cpu_to_be32(intc_phandle);
198 cells[cpu * 4 + 1] = cpu_to_be32(IRQ_M_SOFT);
199 cells[cpu * 4 + 2] = cpu_to_be32(intc_phandle);
200 cells[cpu * 4 + 3] = cpu_to_be32(IRQ_M_TIMER);
201 g_free(nodename);
202 }
203 nodename = g_strdup_printf("/soc/clint@%lx",
204 (long)memmap[SIFIVE_U_CLINT].base);
205 qemu_fdt_add_subnode(fdt, nodename);
206 qemu_fdt_setprop_string(fdt, nodename, "compatible", "riscv,clint0");
207 qemu_fdt_setprop_cells(fdt, nodename, "reg",
208 0x0, memmap[SIFIVE_U_CLINT].base,
209 0x0, memmap[SIFIVE_U_CLINT].size);
210 qemu_fdt_setprop(fdt, nodename, "interrupts-extended",
211 cells, ms->smp.cpus * sizeof(uint32_t) * 4);
212 g_free(cells);
213 g_free(nodename);
214
215 nodename = g_strdup_printf("/soc/otp@%lx",
216 (long)memmap[SIFIVE_U_OTP].base);
217 qemu_fdt_add_subnode(fdt, nodename);
218 qemu_fdt_setprop_cell(fdt, nodename, "fuse-count", SIFIVE_U_OTP_REG_SIZE);
219 qemu_fdt_setprop_cells(fdt, nodename, "reg",
220 0x0, memmap[SIFIVE_U_OTP].base,
221 0x0, memmap[SIFIVE_U_OTP].size);
222 qemu_fdt_setprop_string(fdt, nodename, "compatible",
223 "sifive,fu540-c000-otp");
224 g_free(nodename);
225
226 prci_phandle = phandle++;
227 nodename = g_strdup_printf("/soc/clock-controller@%lx",
228 (long)memmap[SIFIVE_U_PRCI].base);
229 qemu_fdt_add_subnode(fdt, nodename);
230 qemu_fdt_setprop_cell(fdt, nodename, "phandle", prci_phandle);
231 qemu_fdt_setprop_cell(fdt, nodename, "#clock-cells", 0x1);
232 qemu_fdt_setprop_cells(fdt, nodename, "clocks",
233 hfclk_phandle, rtcclk_phandle);
234 qemu_fdt_setprop_cells(fdt, nodename, "reg",
235 0x0, memmap[SIFIVE_U_PRCI].base,
236 0x0, memmap[SIFIVE_U_PRCI].size);
237 qemu_fdt_setprop_string(fdt, nodename, "compatible",
238 "sifive,fu540-c000-prci");
239 g_free(nodename);
240
241 plic_phandle = phandle++;
242 cells = g_new0(uint32_t, ms->smp.cpus * 4 - 2);
243 for (cpu = 0; cpu < ms->smp.cpus; cpu++) {
244 nodename =
245 g_strdup_printf("/cpus/cpu@%d/interrupt-controller", cpu);
246 uint32_t intc_phandle = qemu_fdt_get_phandle(fdt, nodename);
247 /* cpu 0 is the management hart that does not have S-mode */
248 if (cpu == 0) {
249 cells[0] = cpu_to_be32(intc_phandle);
250 cells[1] = cpu_to_be32(IRQ_M_EXT);
251 } else {
252 cells[cpu * 4 - 2] = cpu_to_be32(intc_phandle);
253 cells[cpu * 4 - 1] = cpu_to_be32(IRQ_M_EXT);
254 cells[cpu * 4 + 0] = cpu_to_be32(intc_phandle);
255 cells[cpu * 4 + 1] = cpu_to_be32(IRQ_S_EXT);
256 }
257 g_free(nodename);
258 }
259 nodename = g_strdup_printf("/soc/interrupt-controller@%lx",
260 (long)memmap[SIFIVE_U_PLIC].base);
261 qemu_fdt_add_subnode(fdt, nodename);
262 qemu_fdt_setprop_cell(fdt, nodename, "#interrupt-cells", 1);
263 qemu_fdt_setprop_string(fdt, nodename, "compatible", "riscv,plic0");
264 qemu_fdt_setprop(fdt, nodename, "interrupt-controller", NULL, 0);
265 qemu_fdt_setprop(fdt, nodename, "interrupts-extended",
266 cells, (ms->smp.cpus * 4 - 2) * sizeof(uint32_t));
267 qemu_fdt_setprop_cells(fdt, nodename, "reg",
268 0x0, memmap[SIFIVE_U_PLIC].base,
269 0x0, memmap[SIFIVE_U_PLIC].size);
270 qemu_fdt_setprop_cell(fdt, nodename, "riscv,ndev", 0x35);
271 qemu_fdt_setprop_cell(fdt, nodename, "phandle", plic_phandle);
272 plic_phandle = qemu_fdt_get_phandle(fdt, nodename);
273 g_free(cells);
274 g_free(nodename);
275
276 gpio_phandle = phandle++;
277 nodename = g_strdup_printf("/soc/gpio@%lx",
278 (long)memmap[SIFIVE_U_GPIO].base);
279 qemu_fdt_add_subnode(fdt, nodename);
280 qemu_fdt_setprop_cell(fdt, nodename, "phandle", gpio_phandle);
281 qemu_fdt_setprop_cells(fdt, nodename, "clocks",
282 prci_phandle, PRCI_CLK_TLCLK);
283 qemu_fdt_setprop_cell(fdt, nodename, "#interrupt-cells", 2);
284 qemu_fdt_setprop(fdt, nodename, "interrupt-controller", NULL, 0);
285 qemu_fdt_setprop_cell(fdt, nodename, "#gpio-cells", 2);
286 qemu_fdt_setprop(fdt, nodename, "gpio-controller", NULL, 0);
287 qemu_fdt_setprop_cells(fdt, nodename, "reg",
288 0x0, memmap[SIFIVE_U_GPIO].base,
289 0x0, memmap[SIFIVE_U_GPIO].size);
290 qemu_fdt_setprop_cells(fdt, nodename, "interrupts", SIFIVE_U_GPIO_IRQ0,
291 SIFIVE_U_GPIO_IRQ1, SIFIVE_U_GPIO_IRQ2, SIFIVE_U_GPIO_IRQ3,
292 SIFIVE_U_GPIO_IRQ4, SIFIVE_U_GPIO_IRQ5, SIFIVE_U_GPIO_IRQ6,
293 SIFIVE_U_GPIO_IRQ7, SIFIVE_U_GPIO_IRQ8, SIFIVE_U_GPIO_IRQ9,
294 SIFIVE_U_GPIO_IRQ10, SIFIVE_U_GPIO_IRQ11, SIFIVE_U_GPIO_IRQ12,
295 SIFIVE_U_GPIO_IRQ13, SIFIVE_U_GPIO_IRQ14, SIFIVE_U_GPIO_IRQ15);
296 qemu_fdt_setprop_cell(fdt, nodename, "interrupt-parent", plic_phandle);
297 qemu_fdt_setprop_string(fdt, nodename, "compatible", "sifive,gpio0");
298 g_free(nodename);
299
300 nodename = g_strdup_printf("/gpio-restart");
301 qemu_fdt_add_subnode(fdt, nodename);
302 qemu_fdt_setprop_cells(fdt, nodename, "gpios", gpio_phandle, 10, 1);
303 qemu_fdt_setprop_string(fdt, nodename, "compatible", "gpio-restart");
304 g_free(nodename);
305
306 phy_phandle = phandle++;
307 nodename = g_strdup_printf("/soc/ethernet@%lx",
308 (long)memmap[SIFIVE_U_GEM].base);
309 qemu_fdt_add_subnode(fdt, nodename);
310 qemu_fdt_setprop_string(fdt, nodename, "compatible",
311 "sifive,fu540-c000-gem");
312 qemu_fdt_setprop_cells(fdt, nodename, "reg",
313 0x0, memmap[SIFIVE_U_GEM].base,
314 0x0, memmap[SIFIVE_U_GEM].size,
315 0x0, memmap[SIFIVE_U_GEM_MGMT].base,
316 0x0, memmap[SIFIVE_U_GEM_MGMT].size);
317 qemu_fdt_setprop_string(fdt, nodename, "reg-names", "control");
318 qemu_fdt_setprop_string(fdt, nodename, "phy-mode", "gmii");
319 qemu_fdt_setprop_cell(fdt, nodename, "phy-handle", phy_phandle);
320 qemu_fdt_setprop_cell(fdt, nodename, "interrupt-parent", plic_phandle);
321 qemu_fdt_setprop_cell(fdt, nodename, "interrupts", SIFIVE_U_GEM_IRQ);
322 qemu_fdt_setprop_cells(fdt, nodename, "clocks",
323 prci_phandle, PRCI_CLK_GEMGXLPLL, prci_phandle, PRCI_CLK_GEMGXLPLL);
324 qemu_fdt_setprop(fdt, nodename, "clock-names", ethclk_names,
325 sizeof(ethclk_names));
326 qemu_fdt_setprop(fdt, nodename, "local-mac-address",
327 s->soc.gem.conf.macaddr.a, ETH_ALEN);
328 qemu_fdt_setprop_cell(fdt, nodename, "#address-cells", 1);
329 qemu_fdt_setprop_cell(fdt, nodename, "#size-cells", 0);
330
331 qemu_fdt_add_subnode(fdt, "/aliases");
332 qemu_fdt_setprop_string(fdt, "/aliases", "ethernet0", nodename);
333
334 g_free(nodename);
335
336 nodename = g_strdup_printf("/soc/ethernet@%lx/ethernet-phy@0",
337 (long)memmap[SIFIVE_U_GEM].base);
338 qemu_fdt_add_subnode(fdt, nodename);
339 qemu_fdt_setprop_cell(fdt, nodename, "phandle", phy_phandle);
340 qemu_fdt_setprop_cell(fdt, nodename, "reg", 0x0);
341 g_free(nodename);
342
343 nodename = g_strdup_printf("/soc/serial@%lx",
344 (long)memmap[SIFIVE_U_UART0].base);
345 qemu_fdt_add_subnode(fdt, nodename);
346 qemu_fdt_setprop_string(fdt, nodename, "compatible", "sifive,uart0");
347 qemu_fdt_setprop_cells(fdt, nodename, "reg",
348 0x0, memmap[SIFIVE_U_UART0].base,
349 0x0, memmap[SIFIVE_U_UART0].size);
350 qemu_fdt_setprop_cells(fdt, nodename, "clocks",
351 prci_phandle, PRCI_CLK_TLCLK);
352 qemu_fdt_setprop_cell(fdt, nodename, "interrupt-parent", plic_phandle);
353 qemu_fdt_setprop_cell(fdt, nodename, "interrupts", SIFIVE_U_UART0_IRQ);
354
355 qemu_fdt_add_subnode(fdt, "/chosen");
356 qemu_fdt_setprop_string(fdt, "/chosen", "stdout-path", nodename);
357 if (cmdline) {
358 qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline);
359 }
360
361 qemu_fdt_setprop_string(fdt, "/aliases", "serial0", nodename);
362
363 g_free(nodename);
364 }
365
366 static void sifive_u_machine_reset(void *opaque, int n, int level)
367 {
368 /* gpio pin active low triggers reset */
369 if (!level) {
370 qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
371 }
372 }
373
374 static void sifive_u_machine_init(MachineState *machine)
375 {
376 const struct MemmapEntry *memmap = sifive_u_memmap;
377 SiFiveUState *s = RISCV_U_MACHINE(machine);
378 MemoryRegion *system_memory = get_system_memory();
379 MemoryRegion *main_mem = g_new(MemoryRegion, 1);
380 MemoryRegion *flash0 = g_new(MemoryRegion, 1);
381 target_ulong start_addr = memmap[SIFIVE_U_DRAM].base;
382 int i;
383
384 /* Initialize SoC */
385 object_initialize_child(OBJECT(machine), "soc", &s->soc, TYPE_RISCV_U_SOC);
386 object_property_set_uint(OBJECT(&s->soc), "serial", s->serial,
387 &error_abort);
388 qdev_realize(DEVICE(&s->soc), NULL, &error_abort);
389
390 /* register RAM */
391 memory_region_init_ram(main_mem, NULL, "riscv.sifive.u.ram",
392 machine->ram_size, &error_fatal);
393 memory_region_add_subregion(system_memory, memmap[SIFIVE_U_DRAM].base,
394 main_mem);
395
396 /* register QSPI0 Flash */
397 memory_region_init_ram(flash0, NULL, "riscv.sifive.u.flash0",
398 memmap[SIFIVE_U_FLASH0].size, &error_fatal);
399 memory_region_add_subregion(system_memory, memmap[SIFIVE_U_FLASH0].base,
400 flash0);
401
402 /* register gpio-restart */
403 qdev_connect_gpio_out(DEVICE(&(s->soc.gpio)), 10,
404 qemu_allocate_irq(sifive_u_machine_reset, NULL, 0));
405
406 /* create device tree */
407 create_fdt(s, memmap, machine->ram_size, machine->kernel_cmdline);
408
409 if (s->start_in_flash) {
410 /*
411 * If start_in_flash property is given, assign s->msel to a value
412 * that representing booting from QSPI0 memory-mapped flash.
413 *
414 * This also means that when both start_in_flash and msel properties
415 * are given, start_in_flash takes the precedence over msel.
416 *
417 * Note this is to keep backward compatibility not to break existing
418 * users that use start_in_flash property.
419 */
420 s->msel = MSEL_MEMMAP_QSPI0_FLASH;
421 }
422
423 switch (s->msel) {
424 case MSEL_MEMMAP_QSPI0_FLASH:
425 start_addr = memmap[SIFIVE_U_FLASH0].base;
426 break;
427 case MSEL_L2LIM_QSPI0_FLASH:
428 case MSEL_L2LIM_QSPI2_SD:
429 start_addr = memmap[SIFIVE_U_L2LIM].base;
430 break;
431 default:
432 start_addr = memmap[SIFIVE_U_DRAM].base;
433 break;
434 }
435
436 riscv_find_and_load_firmware(machine, BIOS_FILENAME, start_addr, NULL);
437
438 if (machine->kernel_filename) {
439 uint64_t kernel_entry = riscv_load_kernel(machine->kernel_filename,
440 NULL);
441
442 if (machine->initrd_filename) {
443 hwaddr start;
444 hwaddr end = riscv_load_initrd(machine->initrd_filename,
445 machine->ram_size, kernel_entry,
446 &start);
447 qemu_fdt_setprop_cell(s->fdt, "/chosen",
448 "linux,initrd-start", start);
449 qemu_fdt_setprop_cell(s->fdt, "/chosen", "linux,initrd-end",
450 end);
451 }
452 }
453
454 /* reset vector */
455 uint32_t reset_vec[8] = {
456 s->msel, /* MSEL pin state */
457 0x00000297, /* 1: auipc t0, %pcrel_hi(dtb) */
458 0x01c28593, /* addi a1, t0, %pcrel_lo(1b) */
459 0xf1402573, /* csrr a0, mhartid */
460 #if defined(TARGET_RISCV32)
461 0x0182a283, /* lw t0, 24(t0) */
462 #elif defined(TARGET_RISCV64)
463 0x0182e283, /* lwu t0, 24(t0) */
464 #endif
465 0x00028067, /* jr t0 */
466 0x00000000,
467 start_addr, /* start: .dword */
468 /* dtb: */
469 };
470
471 /* copy in the reset vector in little_endian byte order */
472 for (i = 0; i < sizeof(reset_vec) >> 2; i++) {
473 reset_vec[i] = cpu_to_le32(reset_vec[i]);
474 }
475 rom_add_blob_fixed_as("mrom.reset", reset_vec, sizeof(reset_vec),
476 memmap[SIFIVE_U_MROM].base, &address_space_memory);
477
478 /* copy in the device tree */
479 if (fdt_pack(s->fdt) || fdt_totalsize(s->fdt) >
480 memmap[SIFIVE_U_MROM].size - sizeof(reset_vec)) {
481 error_report("not enough space to store device-tree");
482 exit(1);
483 }
484 qemu_fdt_dumpdtb(s->fdt, fdt_totalsize(s->fdt));
485 rom_add_blob_fixed_as("mrom.fdt", s->fdt, fdt_totalsize(s->fdt),
486 memmap[SIFIVE_U_MROM].base + sizeof(reset_vec),
487 &address_space_memory);
488 }
489
490 static bool sifive_u_machine_get_start_in_flash(Object *obj, Error **errp)
491 {
492 SiFiveUState *s = RISCV_U_MACHINE(obj);
493
494 return s->start_in_flash;
495 }
496
497 static void sifive_u_machine_set_start_in_flash(Object *obj, bool value, Error **errp)
498 {
499 SiFiveUState *s = RISCV_U_MACHINE(obj);
500
501 s->start_in_flash = value;
502 }
503
504 static void sifive_u_machine_get_uint32_prop(Object *obj, Visitor *v,
505 const char *name, void *opaque,
506 Error **errp)
507 {
508 visit_type_uint32(v, name, (uint32_t *)opaque, errp);
509 }
510
511 static void sifive_u_machine_set_uint32_prop(Object *obj, Visitor *v,
512 const char *name, void *opaque,
513 Error **errp)
514 {
515 visit_type_uint32(v, name, (uint32_t *)opaque, errp);
516 }
517
518 static void sifive_u_machine_instance_init(Object *obj)
519 {
520 SiFiveUState *s = RISCV_U_MACHINE(obj);
521
522 s->start_in_flash = false;
523 object_property_add_bool(obj, "start-in-flash",
524 sifive_u_machine_get_start_in_flash,
525 sifive_u_machine_set_start_in_flash);
526 object_property_set_description(obj, "start-in-flash",
527 "Set on to tell QEMU's ROM to jump to "
528 "flash. Otherwise QEMU will jump to DRAM "
529 "or L2LIM depending on the msel value");
530
531 s->msel = 0;
532 object_property_add(obj, "msel", "uint32",
533 sifive_u_machine_get_uint32_prop,
534 sifive_u_machine_set_uint32_prop, NULL, &s->msel);
535 object_property_set_description(obj, "msel",
536 "Mode Select (MSEL[3:0]) pin state");
537
538 s->serial = OTP_SERIAL;
539 object_property_add(obj, "serial", "uint32",
540 sifive_u_machine_get_uint32_prop,
541 sifive_u_machine_set_uint32_prop, NULL, &s->serial);
542 object_property_set_description(obj, "serial", "Board serial number");
543 }
544
545 static void sifive_u_machine_class_init(ObjectClass *oc, void *data)
546 {
547 MachineClass *mc = MACHINE_CLASS(oc);
548
549 mc->desc = "RISC-V Board compatible with SiFive U SDK";
550 mc->init = sifive_u_machine_init;
551 mc->max_cpus = SIFIVE_U_MANAGEMENT_CPU_COUNT + SIFIVE_U_COMPUTE_CPU_COUNT;
552 mc->min_cpus = SIFIVE_U_MANAGEMENT_CPU_COUNT + 1;
553 mc->default_cpus = mc->min_cpus;
554 }
555
556 static const TypeInfo sifive_u_machine_typeinfo = {
557 .name = MACHINE_TYPE_NAME("sifive_u"),
558 .parent = TYPE_MACHINE,
559 .class_init = sifive_u_machine_class_init,
560 .instance_init = sifive_u_machine_instance_init,
561 .instance_size = sizeof(SiFiveUState),
562 };
563
564 static void sifive_u_machine_init_register_types(void)
565 {
566 type_register_static(&sifive_u_machine_typeinfo);
567 }
568
569 type_init(sifive_u_machine_init_register_types)
570
571 static void sifive_u_soc_instance_init(Object *obj)
572 {
573 MachineState *ms = MACHINE(qdev_get_machine());
574 SiFiveUSoCState *s = RISCV_U_SOC(obj);
575
576 object_initialize_child(obj, "e-cluster", &s->e_cluster, TYPE_CPU_CLUSTER);
577 qdev_prop_set_uint32(DEVICE(&s->e_cluster), "cluster-id", 0);
578
579 object_initialize_child(OBJECT(&s->e_cluster), "e-cpus", &s->e_cpus,
580 TYPE_RISCV_HART_ARRAY);
581 qdev_prop_set_uint32(DEVICE(&s->e_cpus), "num-harts", 1);
582 qdev_prop_set_uint32(DEVICE(&s->e_cpus), "hartid-base", 0);
583 qdev_prop_set_string(DEVICE(&s->e_cpus), "cpu-type", SIFIVE_E_CPU);
584
585 object_initialize_child(obj, "u-cluster", &s->u_cluster, TYPE_CPU_CLUSTER);
586 qdev_prop_set_uint32(DEVICE(&s->u_cluster), "cluster-id", 1);
587
588 object_initialize_child(OBJECT(&s->u_cluster), "u-cpus", &s->u_cpus,
589 TYPE_RISCV_HART_ARRAY);
590 qdev_prop_set_uint32(DEVICE(&s->u_cpus), "num-harts", ms->smp.cpus - 1);
591 qdev_prop_set_uint32(DEVICE(&s->u_cpus), "hartid-base", 1);
592 qdev_prop_set_string(DEVICE(&s->u_cpus), "cpu-type", SIFIVE_U_CPU);
593
594 object_initialize_child(obj, "prci", &s->prci, TYPE_SIFIVE_U_PRCI);
595 object_initialize_child(obj, "otp", &s->otp, TYPE_SIFIVE_U_OTP);
596 object_initialize_child(obj, "gem", &s->gem, TYPE_CADENCE_GEM);
597 object_initialize_child(obj, "gpio", &s->gpio, TYPE_SIFIVE_GPIO);
598 }
599
600 static void sifive_u_soc_realize(DeviceState *dev, Error **errp)
601 {
602 MachineState *ms = MACHINE(qdev_get_machine());
603 SiFiveUSoCState *s = RISCV_U_SOC(dev);
604 const struct MemmapEntry *memmap = sifive_u_memmap;
605 MemoryRegion *system_memory = get_system_memory();
606 MemoryRegion *mask_rom = g_new(MemoryRegion, 1);
607 MemoryRegion *l2lim_mem = g_new(MemoryRegion, 1);
608 char *plic_hart_config;
609 size_t plic_hart_config_len;
610 int i;
611 NICInfo *nd = &nd_table[0];
612
613 sysbus_realize(SYS_BUS_DEVICE(&s->e_cpus), &error_abort);
614 sysbus_realize(SYS_BUS_DEVICE(&s->u_cpus), &error_abort);
615 /*
616 * The cluster must be realized after the RISC-V hart array container,
617 * as the container's CPU object is only created on realize, and the
618 * CPU must exist and have been parented into the cluster before the
619 * cluster is realized.
620 */
621 qdev_realize(DEVICE(&s->e_cluster), NULL, &error_abort);
622 qdev_realize(DEVICE(&s->u_cluster), NULL, &error_abort);
623
624 /* boot rom */
625 memory_region_init_rom(mask_rom, OBJECT(dev), "riscv.sifive.u.mrom",
626 memmap[SIFIVE_U_MROM].size, &error_fatal);
627 memory_region_add_subregion(system_memory, memmap[SIFIVE_U_MROM].base,
628 mask_rom);
629
630 /*
631 * Add L2-LIM at reset size.
632 * This should be reduced in size as the L2 Cache Controller WayEnable
633 * register is incremented. Unfortunately I don't see a nice (or any) way
634 * to handle reducing or blocking out the L2 LIM while still allowing it
635 * be re returned to all enabled after a reset. For the time being, just
636 * leave it enabled all the time. This won't break anything, but will be
637 * too generous to misbehaving guests.
638 */
639 memory_region_init_ram(l2lim_mem, NULL, "riscv.sifive.u.l2lim",
640 memmap[SIFIVE_U_L2LIM].size, &error_fatal);
641 memory_region_add_subregion(system_memory, memmap[SIFIVE_U_L2LIM].base,
642 l2lim_mem);
643
644 /* create PLIC hart topology configuration string */
645 plic_hart_config_len = (strlen(SIFIVE_U_PLIC_HART_CONFIG) + 1) *
646 ms->smp.cpus;
647 plic_hart_config = g_malloc0(plic_hart_config_len);
648 for (i = 0; i < ms->smp.cpus; i++) {
649 if (i != 0) {
650 strncat(plic_hart_config, "," SIFIVE_U_PLIC_HART_CONFIG,
651 plic_hart_config_len);
652 } else {
653 strncat(plic_hart_config, "M", plic_hart_config_len);
654 }
655 plic_hart_config_len -= (strlen(SIFIVE_U_PLIC_HART_CONFIG) + 1);
656 }
657
658 /* MMIO */
659 s->plic = sifive_plic_create(memmap[SIFIVE_U_PLIC].base,
660 plic_hart_config,
661 SIFIVE_U_PLIC_NUM_SOURCES,
662 SIFIVE_U_PLIC_NUM_PRIORITIES,
663 SIFIVE_U_PLIC_PRIORITY_BASE,
664 SIFIVE_U_PLIC_PENDING_BASE,
665 SIFIVE_U_PLIC_ENABLE_BASE,
666 SIFIVE_U_PLIC_ENABLE_STRIDE,
667 SIFIVE_U_PLIC_CONTEXT_BASE,
668 SIFIVE_U_PLIC_CONTEXT_STRIDE,
669 memmap[SIFIVE_U_PLIC].size);
670 g_free(plic_hart_config);
671 sifive_uart_create(system_memory, memmap[SIFIVE_U_UART0].base,
672 serial_hd(0), qdev_get_gpio_in(DEVICE(s->plic), SIFIVE_U_UART0_IRQ));
673 sifive_uart_create(system_memory, memmap[SIFIVE_U_UART1].base,
674 serial_hd(1), qdev_get_gpio_in(DEVICE(s->plic), SIFIVE_U_UART1_IRQ));
675 sifive_clint_create(memmap[SIFIVE_U_CLINT].base,
676 memmap[SIFIVE_U_CLINT].size, ms->smp.cpus,
677 SIFIVE_SIP_BASE, SIFIVE_TIMECMP_BASE, SIFIVE_TIME_BASE, false);
678
679 if (!sysbus_realize(SYS_BUS_DEVICE(&s->prci), errp)) {
680 return;
681 }
682 sysbus_mmio_map(SYS_BUS_DEVICE(&s->prci), 0, memmap[SIFIVE_U_PRCI].base);
683
684 qdev_prop_set_uint32(DEVICE(&s->gpio), "ngpio", 16);
685 if (!sysbus_realize(SYS_BUS_DEVICE(&s->gpio), errp)) {
686 return;
687 }
688 sysbus_mmio_map(SYS_BUS_DEVICE(&s->gpio), 0, memmap[SIFIVE_U_GPIO].base);
689
690 /* Pass all GPIOs to the SOC layer so they are available to the board */
691 qdev_pass_gpios(DEVICE(&s->gpio), dev, NULL);
692
693 /* Connect GPIO interrupts to the PLIC */
694 for (i = 0; i < 16; i++) {
695 sysbus_connect_irq(SYS_BUS_DEVICE(&s->gpio), i,
696 qdev_get_gpio_in(DEVICE(s->plic),
697 SIFIVE_U_GPIO_IRQ0 + i));
698 }
699
700 qdev_prop_set_uint32(DEVICE(&s->otp), "serial", s->serial);
701 if (!sysbus_realize(SYS_BUS_DEVICE(&s->otp), errp)) {
702 return;
703 }
704 sysbus_mmio_map(SYS_BUS_DEVICE(&s->otp), 0, memmap[SIFIVE_U_OTP].base);
705
706 if (nd->used) {
707 qemu_check_nic_model(nd, TYPE_CADENCE_GEM);
708 qdev_set_nic_properties(DEVICE(&s->gem), nd);
709 }
710 object_property_set_int(OBJECT(&s->gem), "revision", GEM_REVISION,
711 &error_abort);
712 if (!sysbus_realize(SYS_BUS_DEVICE(&s->gem), errp)) {
713 return;
714 }
715 sysbus_mmio_map(SYS_BUS_DEVICE(&s->gem), 0, memmap[SIFIVE_U_GEM].base);
716 sysbus_connect_irq(SYS_BUS_DEVICE(&s->gem), 0,
717 qdev_get_gpio_in(DEVICE(s->plic), SIFIVE_U_GEM_IRQ));
718
719 create_unimplemented_device("riscv.sifive.u.gem-mgmt",
720 memmap[SIFIVE_U_GEM_MGMT].base, memmap[SIFIVE_U_GEM_MGMT].size);
721
722 create_unimplemented_device("riscv.sifive.u.dmc",
723 memmap[SIFIVE_U_DMC].base, memmap[SIFIVE_U_DMC].size);
724 }
725
726 static Property sifive_u_soc_props[] = {
727 DEFINE_PROP_UINT32("serial", SiFiveUSoCState, serial, OTP_SERIAL),
728 DEFINE_PROP_END_OF_LIST()
729 };
730
731 static void sifive_u_soc_class_init(ObjectClass *oc, void *data)
732 {
733 DeviceClass *dc = DEVICE_CLASS(oc);
734
735 device_class_set_props(dc, sifive_u_soc_props);
736 dc->realize = sifive_u_soc_realize;
737 /* Reason: Uses serial_hds in realize function, thus can't be used twice */
738 dc->user_creatable = false;
739 }
740
741 static const TypeInfo sifive_u_soc_type_info = {
742 .name = TYPE_RISCV_U_SOC,
743 .parent = TYPE_DEVICE,
744 .instance_size = sizeof(SiFiveUSoCState),
745 .instance_init = sifive_u_soc_instance_init,
746 .class_init = sifive_u_soc_class_init,
747 };
748
749 static void sifive_u_soc_register_types(void)
750 {
751 type_register_static(&sifive_u_soc_type_info);
752 }
753
754 type_init(sifive_u_soc_register_types)
AR7 emulation for QEMU