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25#include "qemu/osdep.h"
26#include "qemu/units.h"
27#include "qemu/error-report.h"
28#include "qapi/error.h"
29#include "qemu-common.h"
30#include "qemu/datadir.h"
31#include "cpu.h"
32#include "hw/irq.h"
33#include "qemu/timer.h"
34#include "hw/ptimer.h"
35#include "hw/qdev-properties.h"
36#include "sysemu/sysemu.h"
37#include "sysemu/qtest.h"
38#include "sysemu/reset.h"
39#include "hw/boards.h"
40#include "hw/loader.h"
41#include "elf.h"
42#include "trace.h"
43#include "exec/address-spaces.h"
44
45#include "hw/sparc/grlib.h"
46#include "hw/misc/grlib_ahb_apb_pnp.h"
47
48
49#define CPU_CLK (40 * 1000 * 1000)
50
51#define LEON3_PROM_FILENAME "u-boot.bin"
52#define LEON3_PROM_OFFSET (0x00000000)
53#define LEON3_RAM_OFFSET (0x40000000)
54
55#define LEON3_UART_OFFSET (0x80000100)
56#define LEON3_UART_IRQ (3)
57
58#define LEON3_IRQMP_OFFSET (0x80000200)
59
60#define LEON3_TIMER_OFFSET (0x80000300)
61#define LEON3_TIMER_IRQ (6)
62#define LEON3_TIMER_COUNT (2)
63
64#define LEON3_APB_PNP_OFFSET (0x800FF000)
65#define LEON3_AHB_PNP_OFFSET (0xFFFFF000)
66
67typedef struct ResetData {
68 SPARCCPU *cpu;
69 uint32_t entry;
70 target_ulong sp;
71} ResetData;
72
73static uint32_t *gen_store_u32(uint32_t *code, hwaddr addr, uint32_t val)
74{
75 stl_p(code++, 0x82100000);
76 stl_p(code++, 0x84100000);
77 stl_p(code++, 0x03000000 +
78 extract32(addr, 10, 22));
79
80 stl_p(code++, 0x82106000 +
81 extract32(addr, 0, 10));
82
83 stl_p(code++, 0x05000000 +
84 extract32(val, 10, 22));
85
86 stl_p(code++, 0x8410a000 +
87 extract32(val, 0, 10));
88
89 stl_p(code++, 0xc4204000);
90
91 return code;
92}
93
94
95
96
97
98
99static void write_bootloader(CPUSPARCState *env, uint8_t *base,
100 hwaddr kernel_addr)
101{
102 uint32_t *p = (uint32_t *) base;
103
104
105
106 p = gen_store_u32(p, 0x80000108, 3);
107
108
109
110 p = gen_store_u32(p, 0x80000304, 39);
111
112 p = gen_store_u32(p, 0x80000314, 0xFFFFFFFE);
113
114 p = gen_store_u32(p, 0x80000318, 3);
115
116
117 stl_p(p++, 0x82100000);
118 stl_p(p++, 0x03000000 + extract32(kernel_addr, 10, 22));
119
120 stl_p(p++, 0x82106000 + extract32(kernel_addr, 0, 10));
121
122 stl_p(p++, 0x81c04000);
123 stl_p(p++, 0x01000000);
124}
125
126static void main_cpu_reset(void *opaque)
127{
128 ResetData *s = (ResetData *)opaque;
129 CPUState *cpu = CPU(s->cpu);
130 CPUSPARCState *env = &s->cpu->env;
131
132 cpu_reset(cpu);
133
134 cpu->halted = 0;
135 env->pc = s->entry;
136 env->npc = s->entry + 4;
137 env->regbase[6] = s->sp;
138}
139
140void leon3_irq_ack(void *irq_manager, int intno)
141{
142 grlib_irqmp_ack((DeviceState *)irq_manager, intno);
143}
144
145
146
147
148
149static void leon3_set_pil_in(void *opaque, int n, int level)
150{
151 CPUSPARCState *env = opaque;
152 uint32_t pil_in = level;
153 CPUState *cs;
154
155 assert(env != NULL);
156
157 env->pil_in = pil_in;
158
159 if (env->pil_in && (env->interrupt_index == 0 ||
160 (env->interrupt_index & ~15) == TT_EXTINT)) {
161 unsigned int i;
162
163 for (i = 15; i > 0; i--) {
164 if (env->pil_in & (1 << i)) {
165 int old_interrupt = env->interrupt_index;
166
167 env->interrupt_index = TT_EXTINT | i;
168 if (old_interrupt != env->interrupt_index) {
169 cs = env_cpu(env);
170 trace_leon3_set_irq(i);
171 cpu_interrupt(cs, CPU_INTERRUPT_HARD);
172 }
173 break;
174 }
175 }
176 } else if (!env->pil_in && (env->interrupt_index & ~15) == TT_EXTINT) {
177 cs = env_cpu(env);
178 trace_leon3_reset_irq(env->interrupt_index & 15);
179 env->interrupt_index = 0;
180 cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);
181 }
182}
183
184static void leon3_generic_hw_init(MachineState *machine)
185{
186 ram_addr_t ram_size = machine->ram_size;
187 const char *bios_name = machine->firmware ?: LEON3_PROM_FILENAME;
188 const char *kernel_filename = machine->kernel_filename;
189 SPARCCPU *cpu;
190 CPUSPARCState *env;
191 MemoryRegion *address_space_mem = get_system_memory();
192 MemoryRegion *prom = g_new(MemoryRegion, 1);
193 int ret;
194 char *filename;
195 int bios_size;
196 int prom_size;
197 ResetData *reset_info;
198 DeviceState *dev, *irqmpdev;
199 int i;
200 AHBPnp *ahb_pnp;
201 APBPnp *apb_pnp;
202
203
204 cpu = SPARC_CPU(cpu_create(machine->cpu_type));
205 env = &cpu->env;
206
207 cpu_sparc_set_id(env, 0);
208
209
210 reset_info = g_malloc0(sizeof(ResetData));
211 reset_info->cpu = cpu;
212 reset_info->sp = LEON3_RAM_OFFSET + ram_size;
213 qemu_register_reset(main_cpu_reset, reset_info);
214
215 ahb_pnp = GRLIB_AHB_PNP(qdev_new(TYPE_GRLIB_AHB_PNP));
216 sysbus_realize_and_unref(SYS_BUS_DEVICE(ahb_pnp), &error_fatal);
217 sysbus_mmio_map(SYS_BUS_DEVICE(ahb_pnp), 0, LEON3_AHB_PNP_OFFSET);
218 grlib_ahb_pnp_add_entry(ahb_pnp, 0, 0, GRLIB_VENDOR_GAISLER,
219 GRLIB_LEON3_DEV, GRLIB_AHB_MASTER,
220 GRLIB_CPU_AREA);
221
222 apb_pnp = GRLIB_APB_PNP(qdev_new(TYPE_GRLIB_APB_PNP));
223 sysbus_realize_and_unref(SYS_BUS_DEVICE(apb_pnp), &error_fatal);
224 sysbus_mmio_map(SYS_BUS_DEVICE(apb_pnp), 0, LEON3_APB_PNP_OFFSET);
225 grlib_ahb_pnp_add_entry(ahb_pnp, LEON3_APB_PNP_OFFSET, 0xFFF,
226 GRLIB_VENDOR_GAISLER, GRLIB_APBMST_DEV,
227 GRLIB_AHB_SLAVE, GRLIB_AHBMEM_AREA);
228
229
230 irqmpdev = qdev_new(TYPE_GRLIB_IRQMP);
231 qdev_init_gpio_in_named_with_opaque(DEVICE(cpu), leon3_set_pil_in,
232 env, "pil", 1);
233 qdev_connect_gpio_out_named(irqmpdev, "grlib-irq", 0,
234 qdev_get_gpio_in_named(DEVICE(cpu), "pil", 0));
235 sysbus_realize_and_unref(SYS_BUS_DEVICE(irqmpdev), &error_fatal);
236 sysbus_mmio_map(SYS_BUS_DEVICE(irqmpdev), 0, LEON3_IRQMP_OFFSET);
237 env->irq_manager = irqmpdev;
238 env->qemu_irq_ack = leon3_irq_manager;
239 grlib_apb_pnp_add_entry(apb_pnp, LEON3_IRQMP_OFFSET, 0xFFF,
240 GRLIB_VENDOR_GAISLER, GRLIB_IRQMP_DEV,
241 2, 0, GRLIB_APBIO_AREA);
242
243
244 if (ram_size > 1 * GiB) {
245 error_report("Too much memory for this machine: %" PRId64 "MB,"
246 " maximum 1G",
247 ram_size / MiB);
248 exit(1);
249 }
250
251 memory_region_add_subregion(address_space_mem, LEON3_RAM_OFFSET,
252 machine->ram);
253
254
255 prom_size = 8 * MiB;
256 memory_region_init_rom(prom, NULL, "Leon3.bios", prom_size, &error_fatal);
257 memory_region_add_subregion(address_space_mem, LEON3_PROM_OFFSET, prom);
258
259
260 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
261
262 if (filename) {
263 bios_size = get_image_size(filename);
264 } else {
265 bios_size = -1;
266 }
267
268 if (bios_size > prom_size) {
269 error_report("could not load prom '%s': file too big", filename);
270 exit(1);
271 }
272
273 if (bios_size > 0) {
274 ret = load_image_targphys(filename, LEON3_PROM_OFFSET, bios_size);
275 if (ret < 0 || ret > prom_size) {
276 error_report("could not load prom '%s'", filename);
277 exit(1);
278 }
279 } else if (kernel_filename == NULL && !qtest_enabled()) {
280 error_report("Can't read bios image '%s'", filename
281 ? filename
282 : LEON3_PROM_FILENAME);
283 exit(1);
284 }
285 g_free(filename);
286
287
288 if (kernel_filename != NULL) {
289 long kernel_size;
290 uint64_t entry;
291
292 kernel_size = load_elf(kernel_filename, NULL, NULL, NULL,
293 &entry, NULL, NULL, NULL,
294 1 , EM_SPARC, 0, 0);
295 if (kernel_size < 0) {
296 kernel_size = load_uimage(kernel_filename, NULL, &entry,
297 NULL, NULL, NULL);
298 }
299 if (kernel_size < 0) {
300 error_report("could not load kernel '%s'", kernel_filename);
301 exit(1);
302 }
303 if (bios_size <= 0) {
304
305
306
307
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;
316 }
317 }
318
319
320 dev = qdev_new(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 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
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 qdev_get_gpio_in(irqmpdev, LEON3_TIMER_IRQ + i));
330 }
331
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
336
337 dev = qdev_new(TYPE_GRLIB_APB_UART);
338 qdev_prop_set_chr(dev, "chrdev", serial_hd(0));
339 sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
340 sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, LEON3_UART_OFFSET);
341 sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0,
342 qdev_get_gpio_in(irqmpdev, LEON3_UART_IRQ));
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);
346}
347
348static void leon3_generic_machine_init(MachineClass *mc)
349{
350 mc->desc = "Leon-3 generic";
351 mc->init = leon3_generic_hw_init;
352 mc->default_cpu_type = SPARC_CPU_TYPE_NAME("LEON3");
353 mc->default_ram_id = "leon3.ram";
354}
355
356DEFINE_MACHINE("leon3_generic", leon3_generic_machine_init)
357