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5856de80 TS |
1 | /* |
2 | * QEMU Malta board support | |
3 | * | |
4 | * Copyright (c) 2006 Aurelien Jarno | |
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 | */ | |
24 | ||
25 | #include "vl.h" | |
26 | ||
44cbbf18 TS |
27 | #ifdef TARGET_WORDS_BIGENDIAN |
28 | #define BIOS_FILENAME "mips_bios.bin" | |
29 | #else | |
30 | #define BIOS_FILENAME "mipsel_bios.bin" | |
31 | #endif | |
32 | ||
60aa19ab | 33 | #ifdef TARGET_MIPS64 |
74287114 | 34 | #define PHYS_TO_VIRT(x) ((x) | ~0x7fffffffULL) |
5856de80 | 35 | #else |
74287114 | 36 | #define PHYS_TO_VIRT(x) ((x) | ~0x7fffffffU) |
5856de80 TS |
37 | #endif |
38 | ||
74287114 TS |
39 | #define ENVP_ADDR (int32_t)0x80002000 |
40 | #define VIRT_TO_PHYS_ADDEND (-((int64_t)(int32_t)0x80000000)) | |
5856de80 TS |
41 | |
42 | #define ENVP_NB_ENTRIES 16 | |
43 | #define ENVP_ENTRY_SIZE 256 | |
44 | ||
87ee1669 | 45 | extern int nographic; |
5856de80 TS |
46 | extern FILE *logfile; |
47 | ||
48 | typedef struct { | |
49 | uint32_t leds; | |
50 | uint32_t brk; | |
51 | uint32_t gpout; | |
130751ee | 52 | uint32_t i2cin; |
5856de80 TS |
53 | uint32_t i2coe; |
54 | uint32_t i2cout; | |
55 | uint32_t i2csel; | |
56 | CharDriverState *display; | |
57 | char display_text[9]; | |
a4bc3afc | 58 | SerialState *uart; |
5856de80 TS |
59 | } MaltaFPGAState; |
60 | ||
61 | static PITState *pit; | |
62 | ||
5856de80 TS |
63 | /* Malta FPGA */ |
64 | static void malta_fpga_update_display(void *opaque) | |
65 | { | |
66 | char leds_text[9]; | |
67 | int i; | |
68 | MaltaFPGAState *s = opaque; | |
69 | ||
87ee1669 TS |
70 | if (!nographic) { |
71 | for (i = 7 ; i >= 0 ; i--) { | |
72 | if (s->leds & (1 << i)) | |
73 | leds_text[i] = '#'; | |
74 | else | |
75 | leds_text[i] = ' '; | |
76 | } | |
77 | leds_text[8] = '\0'; | |
5856de80 | 78 | |
87ee1669 TS |
79 | qemu_chr_printf(s->display, "\e[H\n\n|\e[32m%-8.8s\e[00m|\r\n", leds_text); |
80 | qemu_chr_printf(s->display, "\n\n\n\n|\e[31m%-8.8s\e[00m|", s->display_text); | |
81 | } | |
5856de80 TS |
82 | } |
83 | ||
130751ee TS |
84 | /* |
85 | * EEPROM 24C01 / 24C02 emulation. | |
86 | * | |
87 | * Emulation for serial EEPROMs: | |
88 | * 24C01 - 1024 bit (128 x 8) | |
89 | * 24C02 - 2048 bit (256 x 8) | |
90 | * | |
91 | * Typical device names include Microchip 24C02SC or SGS Thomson ST24C02. | |
92 | */ | |
93 | ||
94 | //~ #define DEBUG | |
95 | ||
96 | #if defined(DEBUG) | |
97 | # define logout(fmt, args...) fprintf(stderr, "MALTA\t%-24s" fmt, __func__, ##args) | |
98 | #else | |
99 | # define logout(fmt, args...) ((void)0) | |
100 | #endif | |
101 | ||
102 | struct _eeprom24c0x_t { | |
103 | uint8_t tick; | |
104 | uint8_t address; | |
105 | uint8_t command; | |
106 | uint8_t ack; | |
107 | uint8_t scl; | |
108 | uint8_t sda; | |
109 | uint8_t data; | |
110 | //~ uint16_t size; | |
111 | uint8_t contents[256]; | |
112 | }; | |
113 | ||
114 | typedef struct _eeprom24c0x_t eeprom24c0x_t; | |
115 | ||
116 | static eeprom24c0x_t eeprom = { | |
117 | contents: { | |
118 | /* 00000000: */ 0x80,0x08,0x04,0x0D,0x0A,0x01,0x40,0x00, | |
119 | /* 00000008: */ 0x01,0x75,0x54,0x00,0x82,0x08,0x00,0x01, | |
120 | /* 00000010: */ 0x8F,0x04,0x02,0x01,0x01,0x00,0x0E,0x00, | |
121 | /* 00000018: */ 0x00,0x00,0x00,0x14,0x0F,0x14,0x2D,0x40, | |
122 | /* 00000020: */ 0x15,0x08,0x15,0x08,0x00,0x00,0x00,0x00, | |
123 | /* 00000028: */ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
124 | /* 00000030: */ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
125 | /* 00000038: */ 0x00,0x00,0x00,0x00,0x00,0x00,0x12,0xD0, | |
126 | /* 00000040: */ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
127 | /* 00000048: */ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
128 | /* 00000050: */ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
129 | /* 00000058: */ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
130 | /* 00000060: */ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
131 | /* 00000068: */ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
132 | /* 00000070: */ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, | |
133 | /* 00000078: */ 0x00,0x00,0x00,0x00,0x00,0x00,0x64,0xF4, | |
134 | }, | |
135 | }; | |
136 | ||
137 | static uint8_t eeprom24c0x_read() | |
138 | { | |
139 | logout("%u: scl = %u, sda = %u, data = 0x%02x\n", | |
140 | eeprom.tick, eeprom.scl, eeprom.sda, eeprom.data); | |
141 | return eeprom.sda; | |
142 | } | |
143 | ||
144 | static void eeprom24c0x_write(int scl, int sda) | |
145 | { | |
146 | if (eeprom.scl && scl && (eeprom.sda != sda)) { | |
147 | logout("%u: scl = %u->%u, sda = %u->%u i2c %s\n", | |
148 | eeprom.tick, eeprom.scl, scl, eeprom.sda, sda, sda ? "stop" : "start"); | |
149 | if (!sda) { | |
150 | eeprom.tick = 1; | |
151 | eeprom.command = 0; | |
152 | } | |
153 | } else if (eeprom.tick == 0 && !eeprom.ack) { | |
154 | /* Waiting for start. */ | |
155 | logout("%u: scl = %u->%u, sda = %u->%u wait for i2c start\n", | |
156 | eeprom.tick, eeprom.scl, scl, eeprom.sda, sda); | |
157 | } else if (!eeprom.scl && scl) { | |
158 | logout("%u: scl = %u->%u, sda = %u->%u trigger bit\n", | |
159 | eeprom.tick, eeprom.scl, scl, eeprom.sda, sda); | |
160 | if (eeprom.ack) { | |
161 | logout("\ti2c ack bit = 0\n"); | |
162 | sda = 0; | |
163 | eeprom.ack = 0; | |
164 | } else if (eeprom.sda == sda) { | |
165 | uint8_t bit = (sda != 0); | |
166 | logout("\ti2c bit = %d\n", bit); | |
167 | if (eeprom.tick < 9) { | |
168 | eeprom.command <<= 1; | |
169 | eeprom.command += bit; | |
170 | eeprom.tick++; | |
171 | if (eeprom.tick == 9) { | |
172 | logout("\tcommand 0x%04x, %s\n", eeprom.command, bit ? "read" : "write"); | |
173 | eeprom.ack = 1; | |
174 | } | |
175 | } else if (eeprom.tick < 17) { | |
176 | if (eeprom.command & 1) { | |
177 | sda = ((eeprom.data & 0x80) != 0); | |
178 | } | |
179 | eeprom.address <<= 1; | |
180 | eeprom.address += bit; | |
181 | eeprom.tick++; | |
182 | eeprom.data <<= 1; | |
183 | if (eeprom.tick == 17) { | |
184 | eeprom.data = eeprom.contents[eeprom.address]; | |
185 | logout("\taddress 0x%04x, data 0x%02x\n", eeprom.address, eeprom.data); | |
186 | eeprom.ack = 1; | |
187 | eeprom.tick = 0; | |
188 | } | |
189 | } else if (eeprom.tick >= 17) { | |
190 | sda = 0; | |
191 | } | |
192 | } else { | |
193 | logout("\tsda changed with raising scl\n"); | |
194 | } | |
195 | } else { | |
196 | logout("%u: scl = %u->%u, sda = %u->%u\n", eeprom.tick, eeprom.scl, scl, eeprom.sda, sda); | |
197 | } | |
198 | eeprom.scl = scl; | |
199 | eeprom.sda = sda; | |
200 | } | |
201 | ||
5856de80 TS |
202 | static uint32_t malta_fpga_readl(void *opaque, target_phys_addr_t addr) |
203 | { | |
204 | MaltaFPGAState *s = opaque; | |
205 | uint32_t val = 0; | |
206 | uint32_t saddr; | |
207 | ||
208 | saddr = (addr & 0xfffff); | |
209 | ||
210 | switch (saddr) { | |
211 | ||
212 | /* SWITCH Register */ | |
213 | case 0x00200: | |
214 | val = 0x00000000; /* All switches closed */ | |
215 | break; | |
216 | ||
217 | /* STATUS Register */ | |
218 | case 0x00208: | |
219 | #ifdef TARGET_WORDS_BIGENDIAN | |
220 | val = 0x00000012; | |
221 | #else | |
222 | val = 0x00000010; | |
223 | #endif | |
224 | break; | |
225 | ||
226 | /* JMPRS Register */ | |
227 | case 0x00210: | |
228 | val = 0x00; | |
229 | break; | |
230 | ||
231 | /* LEDBAR Register */ | |
232 | case 0x00408: | |
233 | val = s->leds; | |
234 | break; | |
235 | ||
236 | /* BRKRES Register */ | |
237 | case 0x00508: | |
238 | val = s->brk; | |
239 | break; | |
240 | ||
b6dc7ebb | 241 | /* UART Registers are handled directly by the serial device */ |
a4bc3afc | 242 | |
5856de80 TS |
243 | /* GPOUT Register */ |
244 | case 0x00a00: | |
245 | val = s->gpout; | |
246 | break; | |
247 | ||
248 | /* XXX: implement a real I2C controller */ | |
249 | ||
250 | /* GPINP Register */ | |
251 | case 0x00a08: | |
252 | /* IN = OUT until a real I2C control is implemented */ | |
253 | if (s->i2csel) | |
254 | val = s->i2cout; | |
255 | else | |
256 | val = 0x00; | |
257 | break; | |
258 | ||
259 | /* I2CINP Register */ | |
260 | case 0x00b00: | |
130751ee | 261 | val = ((s->i2cin & ~1) | eeprom24c0x_read()); |
5856de80 TS |
262 | break; |
263 | ||
264 | /* I2COE Register */ | |
265 | case 0x00b08: | |
266 | val = s->i2coe; | |
267 | break; | |
268 | ||
269 | /* I2COUT Register */ | |
270 | case 0x00b10: | |
271 | val = s->i2cout; | |
272 | break; | |
273 | ||
274 | /* I2CSEL Register */ | |
275 | case 0x00b18: | |
130751ee | 276 | val = s->i2csel; |
5856de80 TS |
277 | break; |
278 | ||
279 | default: | |
280 | #if 0 | |
3594c774 | 281 | printf ("malta_fpga_read: Bad register offset 0x" TARGET_FMT_lx "\n", |
44cbbf18 | 282 | addr); |
5856de80 TS |
283 | #endif |
284 | break; | |
285 | } | |
286 | return val; | |
287 | } | |
288 | ||
289 | static void malta_fpga_writel(void *opaque, target_phys_addr_t addr, | |
290 | uint32_t val) | |
291 | { | |
292 | MaltaFPGAState *s = opaque; | |
293 | uint32_t saddr; | |
294 | ||
295 | saddr = (addr & 0xfffff); | |
296 | ||
297 | switch (saddr) { | |
298 | ||
299 | /* SWITCH Register */ | |
300 | case 0x00200: | |
301 | break; | |
302 | ||
303 | /* JMPRS Register */ | |
304 | case 0x00210: | |
305 | break; | |
306 | ||
307 | /* LEDBAR Register */ | |
308 | /* XXX: implement a 8-LED array */ | |
309 | case 0x00408: | |
310 | s->leds = val & 0xff; | |
311 | break; | |
312 | ||
313 | /* ASCIIWORD Register */ | |
314 | case 0x00410: | |
315 | snprintf(s->display_text, 9, "%08X", val); | |
316 | malta_fpga_update_display(s); | |
317 | break; | |
318 | ||
319 | /* ASCIIPOS0 to ASCIIPOS7 Registers */ | |
320 | case 0x00418: | |
321 | case 0x00420: | |
322 | case 0x00428: | |
323 | case 0x00430: | |
324 | case 0x00438: | |
325 | case 0x00440: | |
326 | case 0x00448: | |
327 | case 0x00450: | |
328 | s->display_text[(saddr - 0x00418) >> 3] = (char) val; | |
329 | malta_fpga_update_display(s); | |
330 | break; | |
331 | ||
332 | /* SOFTRES Register */ | |
333 | case 0x00500: | |
334 | if (val == 0x42) | |
335 | qemu_system_reset_request (); | |
336 | break; | |
337 | ||
338 | /* BRKRES Register */ | |
339 | case 0x00508: | |
340 | s->brk = val & 0xff; | |
341 | break; | |
342 | ||
b6dc7ebb | 343 | /* UART Registers are handled directly by the serial device */ |
a4bc3afc | 344 | |
5856de80 TS |
345 | /* GPOUT Register */ |
346 | case 0x00a00: | |
347 | s->gpout = val & 0xff; | |
348 | break; | |
349 | ||
350 | /* I2COE Register */ | |
351 | case 0x00b08: | |
352 | s->i2coe = val & 0x03; | |
353 | break; | |
354 | ||
355 | /* I2COUT Register */ | |
356 | case 0x00b10: | |
130751ee TS |
357 | eeprom24c0x_write(val & 0x02, val & 0x01); |
358 | s->i2cout = val; | |
5856de80 TS |
359 | break; |
360 | ||
361 | /* I2CSEL Register */ | |
362 | case 0x00b18: | |
130751ee | 363 | s->i2csel = val & 0x01; |
5856de80 TS |
364 | break; |
365 | ||
366 | default: | |
367 | #if 0 | |
3594c774 | 368 | printf ("malta_fpga_write: Bad register offset 0x" TARGET_FMT_lx "\n", |
44cbbf18 | 369 | addr); |
5856de80 TS |
370 | #endif |
371 | break; | |
372 | } | |
373 | } | |
374 | ||
375 | static CPUReadMemoryFunc *malta_fpga_read[] = { | |
376 | malta_fpga_readl, | |
377 | malta_fpga_readl, | |
378 | malta_fpga_readl | |
379 | }; | |
380 | ||
381 | static CPUWriteMemoryFunc *malta_fpga_write[] = { | |
382 | malta_fpga_writel, | |
383 | malta_fpga_writel, | |
384 | malta_fpga_writel | |
385 | }; | |
386 | ||
387 | void malta_fpga_reset(void *opaque) | |
388 | { | |
389 | MaltaFPGAState *s = opaque; | |
390 | ||
391 | s->leds = 0x00; | |
392 | s->brk = 0x0a; | |
393 | s->gpout = 0x00; | |
130751ee | 394 | s->i2cin = 0x3; |
5856de80 TS |
395 | s->i2coe = 0x0; |
396 | s->i2cout = 0x3; | |
397 | s->i2csel = 0x1; | |
398 | ||
399 | s->display_text[8] = '\0'; | |
400 | snprintf(s->display_text, 9, " "); | |
401 | malta_fpga_update_display(s); | |
402 | } | |
403 | ||
a4bc3afc | 404 | MaltaFPGAState *malta_fpga_init(target_phys_addr_t base, CPUState *env) |
5856de80 TS |
405 | { |
406 | MaltaFPGAState *s; | |
a4bc3afc | 407 | CharDriverState *uart_chr; |
5856de80 TS |
408 | int malta; |
409 | ||
410 | s = (MaltaFPGAState *)qemu_mallocz(sizeof(MaltaFPGAState)); | |
411 | ||
412 | malta = cpu_register_io_memory(0, malta_fpga_read, | |
413 | malta_fpga_write, s); | |
a4bc3afc | 414 | |
b6dc7ebb TS |
415 | cpu_register_physical_memory(base, 0x900, malta); |
416 | cpu_register_physical_memory(base + 0xa00, 0x100000 - 0xa00, malta); | |
5856de80 | 417 | |
87ee1669 TS |
418 | if (!nographic) { |
419 | s->display = qemu_chr_open("vc"); | |
420 | qemu_chr_printf(s->display, "\e[HMalta LEDBAR\r\n"); | |
421 | qemu_chr_printf(s->display, "+--------+\r\n"); | |
422 | qemu_chr_printf(s->display, "+ +\r\n"); | |
423 | qemu_chr_printf(s->display, "+--------+\r\n"); | |
424 | qemu_chr_printf(s->display, "\n"); | |
425 | qemu_chr_printf(s->display, "Malta ASCII\r\n"); | |
426 | qemu_chr_printf(s->display, "+--------+\r\n"); | |
427 | qemu_chr_printf(s->display, "+ +\r\n"); | |
428 | qemu_chr_printf(s->display, "+--------+\r\n"); | |
429 | ||
430 | uart_chr = qemu_chr_open("vc"); | |
431 | qemu_chr_printf(uart_chr, "CBUS UART\r\n"); | |
432 | s->uart = serial_mm_init(base + 0x900, 3, env->irq[2], uart_chr, 1); | |
433 | } | |
a4bc3afc | 434 | |
5856de80 TS |
435 | malta_fpga_reset(s); |
436 | qemu_register_reset(malta_fpga_reset, s); | |
437 | ||
438 | return s; | |
439 | } | |
440 | ||
441 | /* Audio support */ | |
442 | #ifdef HAS_AUDIO | |
443 | static void audio_init (PCIBus *pci_bus) | |
444 | { | |
445 | struct soundhw *c; | |
446 | int audio_enabled = 0; | |
447 | ||
448 | for (c = soundhw; !audio_enabled && c->name; ++c) { | |
449 | audio_enabled = c->enabled; | |
450 | } | |
451 | ||
452 | if (audio_enabled) { | |
453 | AudioState *s; | |
454 | ||
455 | s = AUD_init (); | |
456 | if (s) { | |
457 | for (c = soundhw; c->name; ++c) { | |
5066b9f1 TS |
458 | if (c->enabled) |
459 | c->init.init_pci (pci_bus, s); | |
5856de80 TS |
460 | } |
461 | } | |
462 | } | |
463 | } | |
464 | #endif | |
465 | ||
466 | /* Network support */ | |
467 | static void network_init (PCIBus *pci_bus) | |
468 | { | |
469 | int i; | |
470 | NICInfo *nd; | |
471 | ||
472 | for(i = 0; i < nb_nics; i++) { | |
473 | nd = &nd_table[i]; | |
474 | if (!nd->model) { | |
475 | nd->model = "pcnet"; | |
476 | } | |
477 | if (i == 0 && strcmp(nd->model, "pcnet") == 0) { | |
478 | /* The malta board has a PCNet card using PCI SLOT 11 */ | |
479 | pci_nic_init(pci_bus, nd, 88); | |
480 | } else { | |
481 | pci_nic_init(pci_bus, nd, -1); | |
482 | } | |
483 | } | |
484 | } | |
485 | ||
486 | /* ROM and pseudo bootloader | |
487 | ||
488 | The following code implements a very very simple bootloader. It first | |
489 | loads the registers a0 to a3 to the values expected by the OS, and | |
490 | then jump at the kernel address. | |
491 | ||
492 | The bootloader should pass the locations of the kernel arguments and | |
493 | environment variables tables. Those tables contain the 32-bit address | |
494 | of NULL terminated strings. The environment variables table should be | |
495 | terminated by a NULL address. | |
496 | ||
497 | For a simpler implementation, the number of kernel arguments is fixed | |
498 | to two (the name of the kernel and the command line), and the two | |
499 | tables are actually the same one. | |
500 | ||
501 | The registers a0 to a3 should contain the following values: | |
502 | a0 - number of kernel arguments | |
503 | a1 - 32-bit address of the kernel arguments table | |
504 | a2 - 32-bit address of the environment variables table | |
505 | a3 - RAM size in bytes | |
506 | */ | |
507 | ||
74287114 | 508 | static void write_bootloader (CPUState *env, unsigned long bios_offset, int64_t kernel_entry) |
5856de80 TS |
509 | { |
510 | uint32_t *p; | |
511 | ||
512 | /* Small bootloader */ | |
513 | p = (uint32_t *) (phys_ram_base + bios_offset); | |
26ea0918 | 514 | stl_raw(p++, 0x0bf00160); /* j 0x1fc00580 */ |
3ddd0065 | 515 | stl_raw(p++, 0x00000000); /* nop */ |
5856de80 | 516 | |
26ea0918 TS |
517 | /* YAMON service vector */ |
518 | stl_raw(phys_ram_base + bios_offset + 0x500, 0xbfc00580); /* start: */ | |
519 | stl_raw(phys_ram_base + bios_offset + 0x504, 0xbfc0083c); /* print_count: */ | |
520 | stl_raw(phys_ram_base + bios_offset + 0x520, 0xbfc00580); /* start: */ | |
521 | stl_raw(phys_ram_base + bios_offset + 0x52c, 0xbfc00800); /* flush_cache: */ | |
522 | stl_raw(phys_ram_base + bios_offset + 0x534, 0xbfc00808); /* print: */ | |
523 | stl_raw(phys_ram_base + bios_offset + 0x538, 0xbfc00800); /* reg_cpu_isr: */ | |
524 | stl_raw(phys_ram_base + bios_offset + 0x53c, 0xbfc00800); /* unred_cpu_isr: */ | |
525 | stl_raw(phys_ram_base + bios_offset + 0x540, 0xbfc00800); /* reg_ic_isr: */ | |
526 | stl_raw(phys_ram_base + bios_offset + 0x544, 0xbfc00800); /* unred_ic_isr: */ | |
527 | stl_raw(phys_ram_base + bios_offset + 0x548, 0xbfc00800); /* reg_esr: */ | |
528 | stl_raw(phys_ram_base + bios_offset + 0x54c, 0xbfc00800); /* unreg_esr: */ | |
529 | stl_raw(phys_ram_base + bios_offset + 0x550, 0xbfc00800); /* getchar: */ | |
530 | stl_raw(phys_ram_base + bios_offset + 0x554, 0xbfc00800); /* syscon_read: */ | |
531 | ||
532 | ||
5856de80 | 533 | /* Second part of the bootloader */ |
26ea0918 | 534 | p = (uint32_t *) (phys_ram_base + bios_offset + 0x580); |
d52fff71 TS |
535 | stl_raw(p++, 0x24040002); /* addiu a0, zero, 2 */ |
536 | stl_raw(p++, 0x3c1d0000 | (((ENVP_ADDR - 64) >> 16) & 0xffff)); /* lui sp, high(ENVP_ADDR) */ | |
471ea271 | 537 | stl_raw(p++, 0x37bd0000 | ((ENVP_ADDR - 64) & 0xffff)); /* ori sp, sp, low(ENVP_ADDR) */ |
3ddd0065 | 538 | stl_raw(p++, 0x3c050000 | ((ENVP_ADDR >> 16) & 0xffff)); /* lui a1, high(ENVP_ADDR) */ |
471ea271 | 539 | stl_raw(p++, 0x34a50000 | (ENVP_ADDR & 0xffff)); /* ori a1, a1, low(ENVP_ADDR) */ |
3ddd0065 TS |
540 | stl_raw(p++, 0x3c060000 | (((ENVP_ADDR + 8) >> 16) & 0xffff)); /* lui a2, high(ENVP_ADDR + 8) */ |
541 | stl_raw(p++, 0x34c60000 | ((ENVP_ADDR + 8) & 0xffff)); /* ori a2, a2, low(ENVP_ADDR + 8) */ | |
542 | stl_raw(p++, 0x3c070000 | (env->ram_size >> 16)); /* lui a3, high(env->ram_size) */ | |
543 | stl_raw(p++, 0x34e70000 | (env->ram_size & 0xffff)); /* ori a3, a3, low(env->ram_size) */ | |
2802bfe3 TS |
544 | |
545 | /* Load BAR registers as done by YAMON */ | |
546 | stl_raw(p++, 0x3c09bbe0); /* lui t1, 0xbbe0 */ | |
547 | ||
548 | #ifdef TARGET_WORDS_BIGENDIAN | |
549 | stl_raw(p++, 0x3c08c000); /* lui t0, 0xc000 */ | |
550 | #else | |
551 | stl_raw(p++, 0x340800c0); /* ori t0, r0, 0x00c0 */ | |
552 | #endif | |
553 | stl_raw(p++, 0xad280048); /* sw t0, 0x0048(t1) */ | |
554 | #ifdef TARGET_WORDS_BIGENDIAN | |
555 | stl_raw(p++, 0x3c084000); /* lui t0, 0x4000 */ | |
556 | #else | |
557 | stl_raw(p++, 0x34080040); /* ori t0, r0, 0x0040 */ | |
558 | #endif | |
559 | stl_raw(p++, 0xad280050); /* sw t0, 0x0050(t1) */ | |
560 | ||
561 | #ifdef TARGET_WORDS_BIGENDIAN | |
562 | stl_raw(p++, 0x3c088000); /* lui t0, 0x8000 */ | |
563 | #else | |
564 | stl_raw(p++, 0x34080080); /* ori t0, r0, 0x0080 */ | |
565 | #endif | |
566 | stl_raw(p++, 0xad280058); /* sw t0, 0x0058(t1) */ | |
567 | #ifdef TARGET_WORDS_BIGENDIAN | |
568 | stl_raw(p++, 0x3c083f00); /* lui t0, 0x3f00 */ | |
569 | #else | |
570 | stl_raw(p++, 0x3408003f); /* ori t0, r0, 0x003f */ | |
571 | #endif | |
572 | stl_raw(p++, 0xad280060); /* sw t0, 0x0060(t1) */ | |
573 | ||
574 | #ifdef TARGET_WORDS_BIGENDIAN | |
575 | stl_raw(p++, 0x3c08c100); /* lui t0, 0xc100 */ | |
576 | #else | |
577 | stl_raw(p++, 0x340800c1); /* ori t0, r0, 0x00c1 */ | |
578 | #endif | |
579 | stl_raw(p++, 0xad280080); /* sw t0, 0x0080(t1) */ | |
580 | #ifdef TARGET_WORDS_BIGENDIAN | |
581 | stl_raw(p++, 0x3c085e00); /* lui t0, 0x5e00 */ | |
582 | #else | |
583 | stl_raw(p++, 0x3408005e); /* ori t0, r0, 0x005e */ | |
584 | #endif | |
585 | stl_raw(p++, 0xad280088); /* sw t0, 0x0088(t1) */ | |
586 | ||
587 | /* Jump to kernel code */ | |
74287114 TS |
588 | stl_raw(p++, 0x3c1f0000 | ((kernel_entry >> 16) & 0xffff)); /* lui ra, high(kernel_entry) */ |
589 | stl_raw(p++, 0x37ff0000 | (kernel_entry & 0xffff)); /* ori ra, ra, low(kernel_entry) */ | |
3ddd0065 TS |
590 | stl_raw(p++, 0x03e00008); /* jr ra */ |
591 | stl_raw(p++, 0x00000000); /* nop */ | |
26ea0918 TS |
592 | |
593 | /* YAMON subroutines */ | |
594 | p = (uint32_t *) (phys_ram_base + bios_offset + 0x800); | |
595 | stl_raw(p++, 0x03e00008); /* jr ra */ | |
596 | stl_raw(p++, 0x24020000); /* li v0,0 */ | |
597 | /* 808 YAMON print */ | |
598 | stl_raw(p++, 0x03e06821); /* move t5,ra */ | |
599 | stl_raw(p++, 0x00805821); /* move t3,a0 */ | |
600 | stl_raw(p++, 0x00a05021); /* move t2,a1 */ | |
601 | stl_raw(p++, 0x91440000); /* lbu a0,0(t2) */ | |
602 | stl_raw(p++, 0x254a0001); /* addiu t2,t2,1 */ | |
603 | stl_raw(p++, 0x10800005); /* beqz a0,834 */ | |
604 | stl_raw(p++, 0x00000000); /* nop */ | |
605 | stl_raw(p++, 0x0ff0021c); /* jal 870 */ | |
606 | stl_raw(p++, 0x00000000); /* nop */ | |
607 | stl_raw(p++, 0x08000205); /* j 814 */ | |
608 | stl_raw(p++, 0x00000000); /* nop */ | |
609 | stl_raw(p++, 0x01a00008); /* jr t5 */ | |
610 | stl_raw(p++, 0x01602021); /* move a0,t3 */ | |
611 | /* 0x83c YAMON print_count */ | |
612 | stl_raw(p++, 0x03e06821); /* move t5,ra */ | |
613 | stl_raw(p++, 0x00805821); /* move t3,a0 */ | |
614 | stl_raw(p++, 0x00a05021); /* move t2,a1 */ | |
615 | stl_raw(p++, 0x00c06021); /* move t4,a2 */ | |
616 | stl_raw(p++, 0x91440000); /* lbu a0,0(t2) */ | |
617 | stl_raw(p++, 0x0ff0021c); /* jal 870 */ | |
618 | stl_raw(p++, 0x00000000); /* nop */ | |
619 | stl_raw(p++, 0x254a0001); /* addiu t2,t2,1 */ | |
620 | stl_raw(p++, 0x258cffff); /* addiu t4,t4,-1 */ | |
621 | stl_raw(p++, 0x1580fffa); /* bnez t4,84c */ | |
622 | stl_raw(p++, 0x00000000); /* nop */ | |
623 | stl_raw(p++, 0x01a00008); /* jr t5 */ | |
624 | stl_raw(p++, 0x01602021); /* move a0,t3 */ | |
625 | /* 0x870 */ | |
626 | stl_raw(p++, 0x3c08b800); /* lui t0,0xb400 */ | |
627 | stl_raw(p++, 0x350803f8); /* ori t0,t0,0x3f8 */ | |
628 | stl_raw(p++, 0x91090005); /* lbu t1,5(t0) */ | |
629 | stl_raw(p++, 0x00000000); /* nop */ | |
630 | stl_raw(p++, 0x31290040); /* andi t1,t1,0x40 */ | |
631 | stl_raw(p++, 0x1120fffc); /* beqz t1,878 <outch+0x8> */ | |
632 | stl_raw(p++, 0x00000000); /* nop */ | |
633 | stl_raw(p++, 0x03e00008); /* jr ra */ | |
634 | stl_raw(p++, 0xa1040000); /* sb a0,0(t0) */ | |
635 | ||
5856de80 TS |
636 | } |
637 | ||
638 | static void prom_set(int index, const char *string, ...) | |
639 | { | |
640 | va_list ap; | |
3ddd0065 TS |
641 | int32_t *p; |
642 | int32_t table_addr; | |
5856de80 TS |
643 | char *s; |
644 | ||
645 | if (index >= ENVP_NB_ENTRIES) | |
646 | return; | |
647 | ||
3ddd0065 | 648 | p = (int32_t *) (phys_ram_base + ENVP_ADDR + VIRT_TO_PHYS_ADDEND); |
5856de80 TS |
649 | p += index; |
650 | ||
651 | if (string == NULL) { | |
652 | stl_raw(p, 0); | |
653 | return; | |
654 | } | |
655 | ||
3ddd0065 | 656 | table_addr = ENVP_ADDR + sizeof(int32_t) * ENVP_NB_ENTRIES + index * ENVP_ENTRY_SIZE; |
5856de80 TS |
657 | s = (char *) (phys_ram_base + VIRT_TO_PHYS_ADDEND + table_addr); |
658 | ||
659 | stl_raw(p, table_addr); | |
660 | ||
661 | va_start(ap, string); | |
662 | vsnprintf (s, ENVP_ENTRY_SIZE, string, ap); | |
663 | va_end(ap); | |
664 | } | |
665 | ||
666 | /* Kernel */ | |
667 | static int64_t load_kernel (CPUState *env) | |
668 | { | |
74287114 | 669 | int64_t kernel_entry, kernel_low, kernel_high; |
5856de80 TS |
670 | int index = 0; |
671 | long initrd_size; | |
74287114 | 672 | ram_addr_t initrd_offset; |
5856de80 | 673 | |
74287114 TS |
674 | if (load_elf(env->kernel_filename, VIRT_TO_PHYS_ADDEND, |
675 | &kernel_entry, &kernel_low, &kernel_high) < 0) { | |
5856de80 TS |
676 | fprintf(stderr, "qemu: could not load kernel '%s'\n", |
677 | env->kernel_filename); | |
acdf72bb | 678 | exit(1); |
5856de80 TS |
679 | } |
680 | ||
681 | /* load initrd */ | |
682 | initrd_size = 0; | |
74287114 | 683 | initrd_offset = 0; |
5856de80 | 684 | if (env->initrd_filename) { |
74287114 TS |
685 | initrd_size = get_image_size (env->initrd_filename); |
686 | if (initrd_size > 0) { | |
687 | initrd_offset = (kernel_high + ~TARGET_PAGE_MASK) & TARGET_PAGE_MASK; | |
688 | if (initrd_offset + initrd_size > env->ram_size) { | |
689 | fprintf(stderr, | |
690 | "qemu: memory too small for initial ram disk '%s'\n", | |
691 | env->initrd_filename); | |
692 | exit(1); | |
693 | } | |
694 | initrd_size = load_image(env->initrd_filename, | |
695 | phys_ram_base + initrd_offset); | |
696 | } | |
5856de80 TS |
697 | if (initrd_size == (target_ulong) -1) { |
698 | fprintf(stderr, "qemu: could not load initial ram disk '%s'\n", | |
699 | env->initrd_filename); | |
700 | exit(1); | |
701 | } | |
702 | } | |
703 | ||
704 | /* Store command line. */ | |
705 | prom_set(index++, env->kernel_filename); | |
706 | if (initrd_size > 0) | |
74287114 TS |
707 | prom_set(index++, "rd_start=0x" TARGET_FMT_lx " rd_size=%li %s", |
708 | PHYS_TO_VIRT(initrd_offset), initrd_size, | |
709 | env->kernel_cmdline); | |
5856de80 TS |
710 | else |
711 | prom_set(index++, env->kernel_cmdline); | |
712 | ||
713 | /* Setup minimum environment variables */ | |
714 | prom_set(index++, "memsize"); | |
715 | prom_set(index++, "%i", env->ram_size); | |
716 | prom_set(index++, "modetty0"); | |
717 | prom_set(index++, "38400n8r"); | |
718 | prom_set(index++, NULL); | |
719 | ||
74287114 | 720 | return kernel_entry; |
5856de80 TS |
721 | } |
722 | ||
723 | static void main_cpu_reset(void *opaque) | |
724 | { | |
725 | CPUState *env = opaque; | |
726 | cpu_reset(env); | |
51b2772f | 727 | cpu_mips_register(env, NULL); |
5856de80 TS |
728 | |
729 | /* The bootload does not need to be rewritten as it is located in a | |
730 | read only location. The kernel location and the arguments table | |
731 | location does not change. */ | |
fb82fea0 TS |
732 | if (env->kernel_filename) { |
733 | env->CP0_Status &= ~((1 << CP0St_BEV) | (1 << CP0St_ERL)); | |
5856de80 | 734 | load_kernel (env); |
fb82fea0 | 735 | } |
5856de80 TS |
736 | } |
737 | ||
70705261 | 738 | static |
5856de80 TS |
739 | void mips_malta_init (int ram_size, int vga_ram_size, int boot_device, |
740 | DisplayState *ds, const char **fd_filename, int snapshot, | |
741 | const char *kernel_filename, const char *kernel_cmdline, | |
94fc95cd | 742 | const char *initrd_filename, const char *cpu_model) |
5856de80 TS |
743 | { |
744 | char buf[1024]; | |
745 | unsigned long bios_offset; | |
74287114 | 746 | int64_t kernel_entry; |
5856de80 TS |
747 | PCIBus *pci_bus; |
748 | CPUState *env; | |
749 | RTCState *rtc_state; | |
f1770b3e | 750 | /* fdctrl_t *floppy_controller; */ |
5856de80 TS |
751 | MaltaFPGAState *malta_fpga; |
752 | int ret; | |
33d68b5f | 753 | mips_def_t *def; |
d537cf6c | 754 | qemu_irq *i8259; |
7b717336 TS |
755 | int piix4_devfn; |
756 | uint8_t *eeprom_buf; | |
757 | i2c_bus *smbus; | |
758 | int i; | |
5856de80 | 759 | |
33d68b5f TS |
760 | /* init CPUs */ |
761 | if (cpu_model == NULL) { | |
60aa19ab | 762 | #ifdef TARGET_MIPS64 |
c9c1a064 | 763 | cpu_model = "20Kc"; |
33d68b5f | 764 | #else |
1c32f43e | 765 | cpu_model = "24Kf"; |
33d68b5f TS |
766 | #endif |
767 | } | |
768 | if (mips_find_by_name(cpu_model, &def) != 0) | |
769 | def = NULL; | |
5856de80 | 770 | env = cpu_init(); |
33d68b5f | 771 | cpu_mips_register(env, def); |
5856de80 TS |
772 | register_savevm("cpu", 0, 3, cpu_save, cpu_load, env); |
773 | qemu_register_reset(main_cpu_reset, env); | |
774 | ||
775 | /* allocate RAM */ | |
776 | cpu_register_physical_memory(0, ram_size, IO_MEM_RAM); | |
777 | ||
778 | /* Map the bios at two physical locations, as on the real board */ | |
779 | bios_offset = ram_size + vga_ram_size; | |
780 | cpu_register_physical_memory(0x1e000000LL, | |
781 | BIOS_SIZE, bios_offset | IO_MEM_ROM); | |
782 | cpu_register_physical_memory(0x1fc00000LL, | |
783 | BIOS_SIZE, bios_offset | IO_MEM_ROM); | |
784 | ||
070ce5ed TS |
785 | /* FPGA */ |
786 | malta_fpga = malta_fpga_init(0x1f000000LL, env); | |
787 | ||
788 | /* Load a BIOS image unless a kernel image has been specified. */ | |
789 | if (!kernel_filename) { | |
790 | snprintf(buf, sizeof(buf), "%s/%s", bios_dir, BIOS_FILENAME); | |
791 | ret = load_image(buf, phys_ram_base + bios_offset); | |
792 | if (ret < 0 || ret > BIOS_SIZE) { | |
793 | fprintf(stderr, | |
794 | "qemu: Could not load MIPS bios '%s', and no -kernel argument was specified\n", | |
795 | buf); | |
796 | exit(1); | |
797 | } | |
3187ef03 TS |
798 | /* In little endian mode the 32bit words in the bios are swapped, |
799 | a neat trick which allows bi-endian firmware. */ | |
800 | #ifndef TARGET_WORDS_BIGENDIAN | |
801 | { | |
802 | uint32_t *addr; | |
803 | for (addr = (uint32_t *)(phys_ram_base + bios_offset); | |
804 | addr < (uint32_t *)(phys_ram_base + bios_offset + ret); | |
805 | addr++) { | |
806 | *addr = bswap32(*addr); | |
807 | } | |
808 | } | |
809 | #endif | |
070ce5ed TS |
810 | } |
811 | ||
812 | /* If a kernel image has been specified, write a small bootloader | |
813 | to the flash location. */ | |
5856de80 TS |
814 | if (kernel_filename) { |
815 | env->ram_size = ram_size; | |
816 | env->kernel_filename = kernel_filename; | |
817 | env->kernel_cmdline = kernel_cmdline; | |
818 | env->initrd_filename = initrd_filename; | |
74287114 | 819 | kernel_entry = load_kernel(env); |
fb82fea0 | 820 | env->CP0_Status &= ~((1 << CP0St_BEV) | (1 << CP0St_ERL)); |
74287114 | 821 | write_bootloader(env, bios_offset, kernel_entry); |
5856de80 TS |
822 | } |
823 | ||
824 | /* Board ID = 0x420 (Malta Board with CoreLV) | |
825 | XXX: theoretically 0x1e000010 should map to flash and 0x1fc00010 should | |
826 | map to the board ID. */ | |
827 | stl_raw(phys_ram_base + bios_offset + 0x10, 0x00000420); | |
828 | ||
829 | /* Init internal devices */ | |
d537cf6c | 830 | cpu_mips_irq_init_cpu(env); |
5856de80 TS |
831 | cpu_mips_clock_init(env); |
832 | cpu_mips_irqctrl_init(); | |
833 | ||
5856de80 | 834 | /* Interrupt controller */ |
d537cf6c PB |
835 | /* The 8259 is attached to the MIPS CPU INT0 pin, ie interrupt 2 */ |
836 | i8259 = i8259_init(env->irq[2]); | |
5856de80 TS |
837 | |
838 | /* Northbridge */ | |
d537cf6c | 839 | pci_bus = pci_gt64120_init(i8259); |
5856de80 TS |
840 | |
841 | /* Southbridge */ | |
7b717336 | 842 | piix4_devfn = piix4_init(pci_bus, 80); |
afcc3cdf TS |
843 | pci_piix4_ide_init(pci_bus, bs_table, piix4_devfn + 1, i8259); |
844 | usb_uhci_piix4_init(pci_bus, piix4_devfn + 2); | |
7b717336 TS |
845 | smbus = piix4_pm_init(pci_bus, piix4_devfn + 3, 0x1100); |
846 | eeprom_buf = qemu_mallocz(8 * 256); /* XXX: make this persistent */ | |
847 | for (i = 0; i < 8; i++) { | |
848 | /* TODO: Populate SPD eeprom data. */ | |
849 | smbus_eeprom_device_init(smbus, 0x50 + i, eeprom_buf + (i * 256)); | |
850 | } | |
d537cf6c | 851 | pit = pit_init(0x40, i8259[0]); |
5856de80 TS |
852 | DMA_init(0); |
853 | ||
854 | /* Super I/O */ | |
d537cf6c PB |
855 | i8042_init(i8259[1], i8259[12], 0x60); |
856 | rtc_state = rtc_init(0x70, i8259[8]); | |
7bcc17dc | 857 | if (serial_hds[0]) |
d537cf6c | 858 | serial_init(0x3f8, i8259[4], serial_hds[0]); |
7bcc17dc | 859 | if (serial_hds[1]) |
d537cf6c | 860 | serial_init(0x2f8, i8259[3], serial_hds[1]); |
7bcc17dc | 861 | if (parallel_hds[0]) |
d537cf6c | 862 | parallel_init(0x378, i8259[7], parallel_hds[0]); |
5856de80 | 863 | /* XXX: The floppy controller does not work correctly, something is |
f1770b3e | 864 | probably wrong. |
d537cf6c | 865 | floppy_controller = fdctrl_init(i8259[6], 2, 0, 0x3f0, fd_table); */ |
5856de80 TS |
866 | |
867 | /* Sound card */ | |
868 | #ifdef HAS_AUDIO | |
869 | audio_init(pci_bus); | |
870 | #endif | |
871 | ||
872 | /* Network card */ | |
873 | network_init(pci_bus); | |
11f29511 TS |
874 | |
875 | /* Optional PCI video card */ | |
876 | pci_cirrus_vga_init(pci_bus, ds, phys_ram_base + ram_size, | |
877 | ram_size, vga_ram_size); | |
5856de80 TS |
878 | } |
879 | ||
880 | QEMUMachine mips_malta_machine = { | |
881 | "malta", | |
882 | "MIPS Malta Core LV", | |
883 | mips_malta_init, | |
884 | }; |