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04331d0b MC |
1 | /* |
2 | * QEMU RISC-V VirtIO Board | |
3 | * | |
4 | * Copyright (c) 2017 SiFive, Inc. | |
5 | * | |
6 | * RISC-V machine with 16550a UART and VirtIO MMIO | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms and conditions of the GNU General Public License, | |
10 | * version 2 or later, as published by the Free Software Foundation. | |
11 | * | |
12 | * This program is distributed in the hope it will be useful, but WITHOUT | |
13 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
15 | * more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along with | |
18 | * this program. If not, see <http://www.gnu.org/licenses/>. | |
19 | */ | |
20 | ||
21 | #include "qemu/osdep.h" | |
4bf46af7 | 22 | #include "qemu/units.h" |
04331d0b MC |
23 | #include "qemu/log.h" |
24 | #include "qemu/error-report.h" | |
25 | #include "qapi/error.h" | |
26 | #include "hw/hw.h" | |
27 | #include "hw/boards.h" | |
28 | #include "hw/loader.h" | |
29 | #include "hw/sysbus.h" | |
30 | #include "hw/char/serial.h" | |
31 | #include "target/riscv/cpu.h" | |
32 | #include "hw/riscv/riscv_htif.h" | |
33 | #include "hw/riscv/riscv_hart.h" | |
34 | #include "hw/riscv/sifive_plic.h" | |
35 | #include "hw/riscv/sifive_clint.h" | |
36 | #include "hw/riscv/sifive_test.h" | |
37 | #include "hw/riscv/virt.h" | |
38 | #include "chardev/char.h" | |
39 | #include "sysemu/arch_init.h" | |
40 | #include "sysemu/device_tree.h" | |
41 | #include "exec/address-spaces.h" | |
6d56e396 AF |
42 | #include "hw/pci/pci.h" |
43 | #include "hw/pci-host/gpex.h" | |
04331d0b MC |
44 | #include "elf.h" |
45 | ||
5aec3247 MC |
46 | #include <libfdt.h> |
47 | ||
04331d0b MC |
48 | static const struct MemmapEntry { |
49 | hwaddr base; | |
50 | hwaddr size; | |
51 | } virt_memmap[] = { | |
bb1973aa AF |
52 | [VIRT_DEBUG] = { 0x0, 0x100 }, |
53 | [VIRT_MROM] = { 0x1000, 0x11000 }, | |
54 | [VIRT_TEST] = { 0x100000, 0x1000 }, | |
55 | [VIRT_CLINT] = { 0x2000000, 0x10000 }, | |
56 | [VIRT_PLIC] = { 0xc000000, 0x4000000 }, | |
57 | [VIRT_UART0] = { 0x10000000, 0x100 }, | |
58 | [VIRT_VIRTIO] = { 0x10001000, 0x1000 }, | |
59 | [VIRT_DRAM] = { 0x80000000, 0x0 }, | |
6d56e396 AF |
60 | [VIRT_PCIE_MMIO] = { 0x40000000, 0x40000000 }, |
61 | [VIRT_PCIE_PIO] = { 0x03000000, 0x00010000 }, | |
62 | [VIRT_PCIE_ECAM] = { 0x30000000, 0x10000000 }, | |
04331d0b MC |
63 | }; |
64 | ||
40e46e51 | 65 | static target_ulong load_kernel(const char *kernel_filename) |
04331d0b MC |
66 | { |
67 | uint64_t kernel_entry, kernel_high; | |
68 | ||
4366e1db | 69 | if (load_elf(kernel_filename, NULL, NULL, NULL, |
04331d0b | 70 | &kernel_entry, NULL, &kernel_high, |
89854803 | 71 | 0, EM_RISCV, 1, 0) < 0) { |
371b74e2 | 72 | error_report("could not load kernel '%s'", kernel_filename); |
04331d0b MC |
73 | exit(1); |
74 | } | |
75 | return kernel_entry; | |
76 | } | |
77 | ||
78 | static hwaddr load_initrd(const char *filename, uint64_t mem_size, | |
79 | uint64_t kernel_entry, hwaddr *start) | |
80 | { | |
81 | int size; | |
82 | ||
83 | /* We want to put the initrd far enough into RAM that when the | |
84 | * kernel is uncompressed it will not clobber the initrd. However | |
85 | * on boards without much RAM we must ensure that we still leave | |
86 | * enough room for a decent sized initrd, and on boards with large | |
87 | * amounts of RAM we must avoid the initrd being so far up in RAM | |
88 | * that it is outside lowmem and inaccessible to the kernel. | |
89 | * So for boards with less than 256MB of RAM we put the initrd | |
90 | * halfway into RAM, and for boards with 256MB of RAM or more we put | |
91 | * the initrd at 128MB. | |
92 | */ | |
4bf46af7 | 93 | *start = kernel_entry + MIN(mem_size / 2, 128 * MiB); |
04331d0b MC |
94 | |
95 | size = load_ramdisk(filename, *start, mem_size - *start); | |
96 | if (size == -1) { | |
97 | size = load_image_targphys(filename, *start, mem_size - *start); | |
98 | if (size == -1) { | |
371b74e2 | 99 | error_report("could not load ramdisk '%s'", filename); |
04331d0b MC |
100 | exit(1); |
101 | } | |
102 | } | |
103 | return *start + size; | |
104 | } | |
105 | ||
6d56e396 AF |
106 | static void create_pcie_irq_map(void *fdt, char *nodename, |
107 | uint32_t plic_phandle) | |
108 | { | |
109 | int pin, dev; | |
110 | uint32_t | |
111 | full_irq_map[GPEX_NUM_IRQS * GPEX_NUM_IRQS * FDT_INT_MAP_WIDTH] = {}; | |
112 | uint32_t *irq_map = full_irq_map; | |
113 | ||
114 | /* This code creates a standard swizzle of interrupts such that | |
115 | * each device's first interrupt is based on it's PCI_SLOT number. | |
116 | * (See pci_swizzle_map_irq_fn()) | |
117 | * | |
118 | * We only need one entry per interrupt in the table (not one per | |
119 | * possible slot) seeing the interrupt-map-mask will allow the table | |
120 | * to wrap to any number of devices. | |
121 | */ | |
122 | for (dev = 0; dev < GPEX_NUM_IRQS; dev++) { | |
123 | int devfn = dev * 0x8; | |
124 | ||
125 | for (pin = 0; pin < GPEX_NUM_IRQS; pin++) { | |
126 | int irq_nr = PCIE_IRQ + ((pin + PCI_SLOT(devfn)) % GPEX_NUM_IRQS); | |
127 | int i = 0; | |
128 | ||
129 | irq_map[i] = cpu_to_be32(devfn << 8); | |
130 | ||
131 | i += FDT_PCI_ADDR_CELLS; | |
132 | irq_map[i] = cpu_to_be32(pin + 1); | |
133 | ||
134 | i += FDT_PCI_INT_CELLS; | |
135 | irq_map[i++] = cpu_to_be32(plic_phandle); | |
136 | ||
137 | i += FDT_PLIC_ADDR_CELLS; | |
138 | irq_map[i] = cpu_to_be32(irq_nr); | |
139 | ||
140 | irq_map += FDT_INT_MAP_WIDTH; | |
141 | } | |
142 | } | |
143 | ||
144 | qemu_fdt_setprop(fdt, nodename, "interrupt-map", | |
145 | full_irq_map, sizeof(full_irq_map)); | |
146 | ||
147 | qemu_fdt_setprop_cells(fdt, nodename, "interrupt-map-mask", | |
148 | 0x1800, 0, 0, 0x7); | |
149 | } | |
150 | ||
04331d0b MC |
151 | static void *create_fdt(RISCVVirtState *s, const struct MemmapEntry *memmap, |
152 | uint64_t mem_size, const char *cmdline) | |
153 | { | |
154 | void *fdt; | |
155 | int cpu; | |
156 | uint32_t *cells; | |
157 | char *nodename; | |
158 | uint32_t plic_phandle, phandle = 1; | |
159 | int i; | |
160 | ||
161 | fdt = s->fdt = create_device_tree(&s->fdt_size); | |
162 | if (!fdt) { | |
163 | error_report("create_device_tree() failed"); | |
164 | exit(1); | |
165 | } | |
166 | ||
167 | qemu_fdt_setprop_string(fdt, "/", "model", "riscv-virtio,qemu"); | |
168 | qemu_fdt_setprop_string(fdt, "/", "compatible", "riscv-virtio"); | |
169 | qemu_fdt_setprop_cell(fdt, "/", "#size-cells", 0x2); | |
170 | qemu_fdt_setprop_cell(fdt, "/", "#address-cells", 0x2); | |
171 | ||
172 | qemu_fdt_add_subnode(fdt, "/soc"); | |
173 | qemu_fdt_setprop(fdt, "/soc", "ranges", NULL, 0); | |
53f54508 | 174 | qemu_fdt_setprop_string(fdt, "/soc", "compatible", "simple-bus"); |
04331d0b MC |
175 | qemu_fdt_setprop_cell(fdt, "/soc", "#size-cells", 0x2); |
176 | qemu_fdt_setprop_cell(fdt, "/soc", "#address-cells", 0x2); | |
177 | ||
178 | nodename = g_strdup_printf("/memory@%lx", | |
179 | (long)memmap[VIRT_DRAM].base); | |
180 | qemu_fdt_add_subnode(fdt, nodename); | |
181 | qemu_fdt_setprop_cells(fdt, nodename, "reg", | |
182 | memmap[VIRT_DRAM].base >> 32, memmap[VIRT_DRAM].base, | |
183 | mem_size >> 32, mem_size); | |
184 | qemu_fdt_setprop_string(fdt, nodename, "device_type", "memory"); | |
185 | g_free(nodename); | |
186 | ||
187 | qemu_fdt_add_subnode(fdt, "/cpus"); | |
2a8756ed MC |
188 | qemu_fdt_setprop_cell(fdt, "/cpus", "timebase-frequency", |
189 | SIFIVE_CLINT_TIMEBASE_FREQ); | |
04331d0b MC |
190 | qemu_fdt_setprop_cell(fdt, "/cpus", "#size-cells", 0x0); |
191 | qemu_fdt_setprop_cell(fdt, "/cpus", "#address-cells", 0x1); | |
192 | ||
193 | for (cpu = s->soc.num_harts - 1; cpu >= 0; cpu--) { | |
194 | int cpu_phandle = phandle++; | |
195 | nodename = g_strdup_printf("/cpus/cpu@%d", cpu); | |
196 | char *intc = g_strdup_printf("/cpus/cpu@%d/interrupt-controller", cpu); | |
197 | char *isa = riscv_isa_string(&s->soc.harts[cpu]); | |
198 | qemu_fdt_add_subnode(fdt, nodename); | |
2a8756ed MC |
199 | qemu_fdt_setprop_cell(fdt, nodename, "clock-frequency", |
200 | VIRT_CLOCK_FREQ); | |
04331d0b MC |
201 | qemu_fdt_setprop_string(fdt, nodename, "mmu-type", "riscv,sv48"); |
202 | qemu_fdt_setprop_string(fdt, nodename, "riscv,isa", isa); | |
203 | qemu_fdt_setprop_string(fdt, nodename, "compatible", "riscv"); | |
204 | qemu_fdt_setprop_string(fdt, nodename, "status", "okay"); | |
205 | qemu_fdt_setprop_cell(fdt, nodename, "reg", cpu); | |
206 | qemu_fdt_setprop_string(fdt, nodename, "device_type", "cpu"); | |
207 | qemu_fdt_add_subnode(fdt, intc); | |
208 | qemu_fdt_setprop_cell(fdt, intc, "phandle", cpu_phandle); | |
209 | qemu_fdt_setprop_cell(fdt, intc, "linux,phandle", cpu_phandle); | |
210 | qemu_fdt_setprop_string(fdt, intc, "compatible", "riscv,cpu-intc"); | |
211 | qemu_fdt_setprop(fdt, intc, "interrupt-controller", NULL, 0); | |
212 | qemu_fdt_setprop_cell(fdt, intc, "#interrupt-cells", 1); | |
213 | g_free(isa); | |
214 | g_free(intc); | |
215 | g_free(nodename); | |
216 | } | |
217 | ||
218 | cells = g_new0(uint32_t, s->soc.num_harts * 4); | |
219 | for (cpu = 0; cpu < s->soc.num_harts; cpu++) { | |
220 | nodename = | |
221 | g_strdup_printf("/cpus/cpu@%d/interrupt-controller", cpu); | |
222 | uint32_t intc_phandle = qemu_fdt_get_phandle(fdt, nodename); | |
223 | cells[cpu * 4 + 0] = cpu_to_be32(intc_phandle); | |
224 | cells[cpu * 4 + 1] = cpu_to_be32(IRQ_M_SOFT); | |
225 | cells[cpu * 4 + 2] = cpu_to_be32(intc_phandle); | |
226 | cells[cpu * 4 + 3] = cpu_to_be32(IRQ_M_TIMER); | |
227 | g_free(nodename); | |
228 | } | |
229 | nodename = g_strdup_printf("/soc/clint@%lx", | |
230 | (long)memmap[VIRT_CLINT].base); | |
231 | qemu_fdt_add_subnode(fdt, nodename); | |
232 | qemu_fdt_setprop_string(fdt, nodename, "compatible", "riscv,clint0"); | |
233 | qemu_fdt_setprop_cells(fdt, nodename, "reg", | |
234 | 0x0, memmap[VIRT_CLINT].base, | |
235 | 0x0, memmap[VIRT_CLINT].size); | |
236 | qemu_fdt_setprop(fdt, nodename, "interrupts-extended", | |
237 | cells, s->soc.num_harts * sizeof(uint32_t) * 4); | |
238 | g_free(cells); | |
239 | g_free(nodename); | |
240 | ||
241 | plic_phandle = phandle++; | |
242 | cells = g_new0(uint32_t, s->soc.num_harts * 4); | |
243 | for (cpu = 0; cpu < s->soc.num_harts; 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 | cells[cpu * 4 + 0] = cpu_to_be32(intc_phandle); | |
248 | cells[cpu * 4 + 1] = cpu_to_be32(IRQ_M_EXT); | |
249 | cells[cpu * 4 + 2] = cpu_to_be32(intc_phandle); | |
250 | cells[cpu * 4 + 3] = cpu_to_be32(IRQ_S_EXT); | |
251 | g_free(nodename); | |
252 | } | |
253 | nodename = g_strdup_printf("/soc/interrupt-controller@%lx", | |
254 | (long)memmap[VIRT_PLIC].base); | |
255 | qemu_fdt_add_subnode(fdt, nodename); | |
6d56e396 AF |
256 | qemu_fdt_setprop_cells(fdt, nodename, "#address-cells", |
257 | FDT_PLIC_ADDR_CELLS); | |
258 | qemu_fdt_setprop_cell(fdt, nodename, "#interrupt-cells", | |
259 | FDT_PLIC_INT_CELLS); | |
04331d0b MC |
260 | qemu_fdt_setprop_string(fdt, nodename, "compatible", "riscv,plic0"); |
261 | qemu_fdt_setprop(fdt, nodename, "interrupt-controller", NULL, 0); | |
262 | qemu_fdt_setprop(fdt, nodename, "interrupts-extended", | |
263 | cells, s->soc.num_harts * sizeof(uint32_t) * 4); | |
264 | qemu_fdt_setprop_cells(fdt, nodename, "reg", | |
265 | 0x0, memmap[VIRT_PLIC].base, | |
266 | 0x0, memmap[VIRT_PLIC].size); | |
267 | qemu_fdt_setprop_string(fdt, nodename, "reg-names", "control"); | |
268 | qemu_fdt_setprop_cell(fdt, nodename, "riscv,max-priority", 7); | |
269 | qemu_fdt_setprop_cell(fdt, nodename, "riscv,ndev", VIRTIO_NDEV); | |
270 | qemu_fdt_setprop_cells(fdt, nodename, "phandle", plic_phandle); | |
271 | qemu_fdt_setprop_cells(fdt, nodename, "linux,phandle", plic_phandle); | |
272 | plic_phandle = qemu_fdt_get_phandle(fdt, nodename); | |
273 | g_free(cells); | |
274 | g_free(nodename); | |
275 | ||
276 | for (i = 0; i < VIRTIO_COUNT; i++) { | |
277 | nodename = g_strdup_printf("/virtio_mmio@%lx", | |
278 | (long)(memmap[VIRT_VIRTIO].base + i * memmap[VIRT_VIRTIO].size)); | |
279 | qemu_fdt_add_subnode(fdt, nodename); | |
280 | qemu_fdt_setprop_string(fdt, nodename, "compatible", "virtio,mmio"); | |
281 | qemu_fdt_setprop_cells(fdt, nodename, "reg", | |
282 | 0x0, memmap[VIRT_VIRTIO].base + i * memmap[VIRT_VIRTIO].size, | |
283 | 0x0, memmap[VIRT_VIRTIO].size); | |
284 | qemu_fdt_setprop_cells(fdt, nodename, "interrupt-parent", plic_phandle); | |
285 | qemu_fdt_setprop_cells(fdt, nodename, "interrupts", VIRTIO_IRQ + i); | |
286 | g_free(nodename); | |
287 | } | |
288 | ||
6d56e396 AF |
289 | nodename = g_strdup_printf("/soc/pci@%lx", |
290 | (long) memmap[VIRT_PCIE_ECAM].base); | |
291 | qemu_fdt_add_subnode(fdt, nodename); | |
292 | qemu_fdt_setprop_cells(fdt, nodename, "#address-cells", | |
293 | FDT_PCI_ADDR_CELLS); | |
294 | qemu_fdt_setprop_cells(fdt, nodename, "#interrupt-cells", | |
295 | FDT_PCI_INT_CELLS); | |
296 | qemu_fdt_setprop_cells(fdt, nodename, "#size-cells", 0x2); | |
297 | qemu_fdt_setprop_string(fdt, nodename, "compatible", | |
298 | "pci-host-ecam-generic"); | |
299 | qemu_fdt_setprop_string(fdt, nodename, "device_type", "pci"); | |
300 | qemu_fdt_setprop_cell(fdt, nodename, "linux,pci-domain", 0); | |
301 | qemu_fdt_setprop_cells(fdt, nodename, "bus-range", 0, | |
302 | memmap[VIRT_PCIE_ECAM].base / | |
303 | PCIE_MMCFG_SIZE_MIN - 1); | |
304 | qemu_fdt_setprop(fdt, nodename, "dma-coherent", NULL, 0); | |
305 | qemu_fdt_setprop_cells(fdt, nodename, "reg", 0, memmap[VIRT_PCIE_ECAM].base, | |
306 | 0, memmap[VIRT_PCIE_ECAM].size); | |
307 | qemu_fdt_setprop_sized_cells(fdt, nodename, "ranges", | |
308 | 1, FDT_PCI_RANGE_IOPORT, 2, 0, | |
309 | 2, memmap[VIRT_PCIE_PIO].base, 2, memmap[VIRT_PCIE_PIO].size, | |
310 | 1, FDT_PCI_RANGE_MMIO, | |
311 | 2, memmap[VIRT_PCIE_MMIO].base, | |
312 | 2, memmap[VIRT_PCIE_MMIO].base, 2, memmap[VIRT_PCIE_MMIO].size); | |
313 | create_pcie_irq_map(fdt, nodename, plic_phandle); | |
314 | g_free(nodename); | |
315 | ||
04331d0b MC |
316 | nodename = g_strdup_printf("/test@%lx", |
317 | (long)memmap[VIRT_TEST].base); | |
318 | qemu_fdt_add_subnode(fdt, nodename); | |
319 | qemu_fdt_setprop_string(fdt, nodename, "compatible", "sifive,test0"); | |
320 | qemu_fdt_setprop_cells(fdt, nodename, "reg", | |
321 | 0x0, memmap[VIRT_TEST].base, | |
322 | 0x0, memmap[VIRT_TEST].size); | |
632fb279 | 323 | g_free(nodename); |
04331d0b MC |
324 | |
325 | nodename = g_strdup_printf("/uart@%lx", | |
326 | (long)memmap[VIRT_UART0].base); | |
327 | qemu_fdt_add_subnode(fdt, nodename); | |
328 | qemu_fdt_setprop_string(fdt, nodename, "compatible", "ns16550a"); | |
329 | qemu_fdt_setprop_cells(fdt, nodename, "reg", | |
330 | 0x0, memmap[VIRT_UART0].base, | |
331 | 0x0, memmap[VIRT_UART0].size); | |
332 | qemu_fdt_setprop_cell(fdt, nodename, "clock-frequency", 3686400); | |
333 | qemu_fdt_setprop_cells(fdt, nodename, "interrupt-parent", plic_phandle); | |
334 | qemu_fdt_setprop_cells(fdt, nodename, "interrupts", UART0_IRQ); | |
335 | ||
336 | qemu_fdt_add_subnode(fdt, "/chosen"); | |
337 | qemu_fdt_setprop_string(fdt, "/chosen", "stdout-path", nodename); | |
7c28f4da MC |
338 | if (cmdline) { |
339 | qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline); | |
340 | } | |
04331d0b MC |
341 | g_free(nodename); |
342 | ||
343 | return fdt; | |
344 | } | |
345 | ||
6d56e396 AF |
346 | |
347 | static inline DeviceState *gpex_pcie_init(MemoryRegion *sys_mem, | |
348 | hwaddr ecam_base, hwaddr ecam_size, | |
349 | hwaddr mmio_base, hwaddr mmio_size, | |
350 | hwaddr pio_base, | |
351 | DeviceState *plic, bool link_up) | |
352 | { | |
353 | DeviceState *dev; | |
354 | MemoryRegion *ecam_alias, *ecam_reg; | |
355 | MemoryRegion *mmio_alias, *mmio_reg; | |
356 | qemu_irq irq; | |
357 | int i; | |
358 | ||
359 | dev = qdev_create(NULL, TYPE_GPEX_HOST); | |
360 | ||
361 | qdev_init_nofail(dev); | |
362 | ||
363 | ecam_alias = g_new0(MemoryRegion, 1); | |
364 | ecam_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0); | |
365 | memory_region_init_alias(ecam_alias, OBJECT(dev), "pcie-ecam", | |
366 | ecam_reg, 0, ecam_size); | |
367 | memory_region_add_subregion(get_system_memory(), ecam_base, ecam_alias); | |
368 | ||
369 | mmio_alias = g_new0(MemoryRegion, 1); | |
370 | mmio_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 1); | |
371 | memory_region_init_alias(mmio_alias, OBJECT(dev), "pcie-mmio", | |
372 | mmio_reg, mmio_base, mmio_size); | |
373 | memory_region_add_subregion(get_system_memory(), mmio_base, mmio_alias); | |
374 | ||
375 | sysbus_mmio_map(SYS_BUS_DEVICE(dev), 2, pio_base); | |
376 | ||
377 | for (i = 0; i < GPEX_NUM_IRQS; i++) { | |
378 | irq = qdev_get_gpio_in(plic, PCIE_IRQ + i); | |
379 | ||
380 | sysbus_connect_irq(SYS_BUS_DEVICE(dev), i, irq); | |
381 | gpex_set_irq_num(GPEX_HOST(dev), i, PCIE_IRQ + i); | |
382 | } | |
383 | ||
384 | return dev; | |
385 | } | |
386 | ||
04331d0b MC |
387 | static void riscv_virt_board_init(MachineState *machine) |
388 | { | |
389 | const struct MemmapEntry *memmap = virt_memmap; | |
390 | ||
391 | RISCVVirtState *s = g_new0(RISCVVirtState, 1); | |
392 | MemoryRegion *system_memory = get_system_memory(); | |
393 | MemoryRegion *main_mem = g_new(MemoryRegion, 1); | |
5aec3247 | 394 | MemoryRegion *mask_rom = g_new(MemoryRegion, 1); |
04331d0b MC |
395 | char *plic_hart_config; |
396 | size_t plic_hart_config_len; | |
397 | int i; | |
398 | void *fdt; | |
399 | ||
400 | /* Initialize SOC */ | |
a993cb15 AF |
401 | object_initialize_child(OBJECT(machine), "soc", &s->soc, sizeof(s->soc), |
402 | TYPE_RISCV_HART_ARRAY, &error_abort, NULL); | |
04331d0b MC |
403 | object_property_set_str(OBJECT(&s->soc), VIRT_CPU, "cpu-type", |
404 | &error_abort); | |
405 | object_property_set_int(OBJECT(&s->soc), smp_cpus, "num-harts", | |
406 | &error_abort); | |
407 | object_property_set_bool(OBJECT(&s->soc), true, "realized", | |
408 | &error_abort); | |
409 | ||
410 | /* register system main memory (actual RAM) */ | |
411 | memory_region_init_ram(main_mem, NULL, "riscv_virt_board.ram", | |
412 | machine->ram_size, &error_fatal); | |
413 | memory_region_add_subregion(system_memory, memmap[VIRT_DRAM].base, | |
414 | main_mem); | |
415 | ||
416 | /* create device tree */ | |
417 | fdt = create_fdt(s, memmap, machine->ram_size, machine->kernel_cmdline); | |
418 | ||
419 | /* boot rom */ | |
5aec3247 MC |
420 | memory_region_init_rom(mask_rom, NULL, "riscv_virt_board.mrom", |
421 | memmap[VIRT_MROM].size, &error_fatal); | |
422 | memory_region_add_subregion(system_memory, memmap[VIRT_MROM].base, | |
423 | mask_rom); | |
04331d0b MC |
424 | |
425 | if (machine->kernel_filename) { | |
426 | uint64_t kernel_entry = load_kernel(machine->kernel_filename); | |
427 | ||
428 | if (machine->initrd_filename) { | |
429 | hwaddr start; | |
430 | hwaddr end = load_initrd(machine->initrd_filename, | |
431 | machine->ram_size, kernel_entry, | |
432 | &start); | |
433 | qemu_fdt_setprop_cell(fdt, "/chosen", | |
434 | "linux,initrd-start", start); | |
435 | qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-end", | |
436 | end); | |
437 | } | |
438 | } | |
439 | ||
440 | /* reset vector */ | |
441 | uint32_t reset_vec[8] = { | |
442 | 0x00000297, /* 1: auipc t0, %pcrel_hi(dtb) */ | |
443 | 0x02028593, /* addi a1, t0, %pcrel_lo(1b) */ | |
444 | 0xf1402573, /* csrr a0, mhartid */ | |
445 | #if defined(TARGET_RISCV32) | |
446 | 0x0182a283, /* lw t0, 24(t0) */ | |
447 | #elif defined(TARGET_RISCV64) | |
448 | 0x0182b283, /* ld t0, 24(t0) */ | |
449 | #endif | |
450 | 0x00028067, /* jr t0 */ | |
451 | 0x00000000, | |
452 | memmap[VIRT_DRAM].base, /* start: .dword memmap[VIRT_DRAM].base */ | |
453 | 0x00000000, | |
454 | /* dtb: */ | |
455 | }; | |
456 | ||
5aec3247 MC |
457 | /* copy in the reset vector in little_endian byte order */ |
458 | for (i = 0; i < sizeof(reset_vec) >> 2; i++) { | |
459 | reset_vec[i] = cpu_to_le32(reset_vec[i]); | |
460 | } | |
461 | rom_add_blob_fixed_as("mrom.reset", reset_vec, sizeof(reset_vec), | |
462 | memmap[VIRT_MROM].base, &address_space_memory); | |
04331d0b MC |
463 | |
464 | /* copy in the device tree */ | |
5aec3247 MC |
465 | if (fdt_pack(s->fdt) || fdt_totalsize(s->fdt) > |
466 | memmap[VIRT_MROM].size - sizeof(reset_vec)) { | |
467 | error_report("not enough space to store device-tree"); | |
468 | exit(1); | |
469 | } | |
470 | qemu_fdt_dumpdtb(s->fdt, fdt_totalsize(s->fdt)); | |
471 | rom_add_blob_fixed_as("mrom.fdt", s->fdt, fdt_totalsize(s->fdt), | |
472 | memmap[VIRT_MROM].base + sizeof(reset_vec), | |
473 | &address_space_memory); | |
04331d0b MC |
474 | |
475 | /* create PLIC hart topology configuration string */ | |
476 | plic_hart_config_len = (strlen(VIRT_PLIC_HART_CONFIG) + 1) * smp_cpus; | |
477 | plic_hart_config = g_malloc0(plic_hart_config_len); | |
478 | for (i = 0; i < smp_cpus; i++) { | |
479 | if (i != 0) { | |
480 | strncat(plic_hart_config, ",", plic_hart_config_len); | |
481 | } | |
482 | strncat(plic_hart_config, VIRT_PLIC_HART_CONFIG, plic_hart_config_len); | |
483 | plic_hart_config_len -= (strlen(VIRT_PLIC_HART_CONFIG) + 1); | |
484 | } | |
485 | ||
486 | /* MMIO */ | |
487 | s->plic = sifive_plic_create(memmap[VIRT_PLIC].base, | |
488 | plic_hart_config, | |
489 | VIRT_PLIC_NUM_SOURCES, | |
490 | VIRT_PLIC_NUM_PRIORITIES, | |
491 | VIRT_PLIC_PRIORITY_BASE, | |
492 | VIRT_PLIC_PENDING_BASE, | |
493 | VIRT_PLIC_ENABLE_BASE, | |
494 | VIRT_PLIC_ENABLE_STRIDE, | |
495 | VIRT_PLIC_CONTEXT_BASE, | |
496 | VIRT_PLIC_CONTEXT_STRIDE, | |
497 | memmap[VIRT_PLIC].size); | |
498 | sifive_clint_create(memmap[VIRT_CLINT].base, | |
499 | memmap[VIRT_CLINT].size, smp_cpus, | |
500 | SIFIVE_SIP_BASE, SIFIVE_TIMECMP_BASE, SIFIVE_TIME_BASE); | |
501 | sifive_test_create(memmap[VIRT_TEST].base); | |
502 | ||
503 | for (i = 0; i < VIRTIO_COUNT; i++) { | |
504 | sysbus_create_simple("virtio-mmio", | |
505 | memmap[VIRT_VIRTIO].base + i * memmap[VIRT_VIRTIO].size, | |
647a70a1 | 506 | qdev_get_gpio_in(DEVICE(s->plic), VIRTIO_IRQ + i)); |
04331d0b MC |
507 | } |
508 | ||
6d56e396 AF |
509 | gpex_pcie_init(system_memory, |
510 | memmap[VIRT_PCIE_ECAM].base, | |
511 | memmap[VIRT_PCIE_ECAM].size, | |
512 | memmap[VIRT_PCIE_MMIO].base, | |
513 | memmap[VIRT_PCIE_MMIO].size, | |
514 | memmap[VIRT_PCIE_PIO].base, | |
515 | DEVICE(s->plic), true); | |
516 | ||
04331d0b | 517 | serial_mm_init(system_memory, memmap[VIRT_UART0].base, |
647a70a1 | 518 | 0, qdev_get_gpio_in(DEVICE(s->plic), UART0_IRQ), 399193, |
9bca0edb | 519 | serial_hd(0), DEVICE_LITTLE_ENDIAN); |
b6aa6ced MC |
520 | |
521 | g_free(plic_hart_config); | |
04331d0b MC |
522 | } |
523 | ||
04331d0b MC |
524 | static void riscv_virt_board_machine_init(MachineClass *mc) |
525 | { | |
77ff5bba | 526 | mc->desc = "RISC-V VirtIO Board (Privileged ISA v1.10)"; |
04331d0b MC |
527 | mc->init = riscv_virt_board_init; |
528 | mc->max_cpus = 8; /* hardcoded limit in BBL */ | |
529 | } | |
530 | ||
531 | DEFINE_MACHINE("virt", riscv_virt_board_machine_init) |