summaryrefslogtreecommitdiff
path: root/hw/integratorcp.c
blob: 68f34f6368f12bb88b617d6c30fd237748d80511 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
/*
 * ARM Integrator CP System emulation.
 *
 * Copyright (c) 2005-2007 CodeSourcery.
 * Written by Paul Brook
 *
 * This code is licenced under the GPL
 */

#include "hw.h"
#include "primecell.h"
#include "devices.h"
#include "sysemu.h"
#include "boards.h"
#include "arm-misc.h"
#include "net.h"

typedef struct {
    uint32_t flash_offset;
    uint32_t cm_osc;
    uint32_t cm_ctrl;
    uint32_t cm_lock;
    uint32_t cm_auxosc;
    uint32_t cm_sdram;
    uint32_t cm_init;
    uint32_t cm_flags;
    uint32_t cm_nvflags;
    uint32_t int_level;
    uint32_t irq_enabled;
    uint32_t fiq_enabled;
} integratorcm_state;

static uint8_t integrator_spd[128] = {
   128, 8, 4, 11, 9, 1, 64, 0,  2, 0xa0, 0xa0, 0, 0, 8, 0, 1,
   0xe, 4, 0x1c, 1, 2, 0x20, 0xc0, 0, 0, 0, 0, 0x30, 0x28, 0x30, 0x28, 0x40
};

static uint32_t integratorcm_read(void *opaque, target_phys_addr_t offset)
{
    integratorcm_state *s = (integratorcm_state *)opaque;
    if (offset >= 0x100 && offset < 0x200) {
        /* CM_SPD */
        if (offset >= 0x180)
            return 0;
        return integrator_spd[offset >> 2];
    }
    switch (offset >> 2) {
    case 0: /* CM_ID */
        return 0x411a3001;
    case 1: /* CM_PROC */
        return 0;
    case 2: /* CM_OSC */
        return s->cm_osc;
    case 3: /* CM_CTRL */
        return s->cm_ctrl;
    case 4: /* CM_STAT */
        return 0x00100000;
    case 5: /* CM_LOCK */
        if (s->cm_lock == 0xa05f) {
            return 0x1a05f;
        } else {
            return s->cm_lock;
        }
    case 6: /* CM_LMBUSCNT */
        /* ??? High frequency timer.  */
        cpu_abort(cpu_single_env, "integratorcm_read: CM_LMBUSCNT");
    case 7: /* CM_AUXOSC */
        return s->cm_auxosc;
    case 8: /* CM_SDRAM */
        return s->cm_sdram;
    case 9: /* CM_INIT */
        return s->cm_init;
    case 10: /* CM_REFCT */
        /* ??? High frequency timer.  */
        cpu_abort(cpu_single_env, "integratorcm_read: CM_REFCT");
    case 12: /* CM_FLAGS */
        return s->cm_flags;
    case 14: /* CM_NVFLAGS */
        return s->cm_nvflags;
    case 16: /* CM_IRQ_STAT */
        return s->int_level & s->irq_enabled;
    case 17: /* CM_IRQ_RSTAT */
        return s->int_level;
    case 18: /* CM_IRQ_ENSET */
        return s->irq_enabled;
    case 20: /* CM_SOFT_INTSET */
        return s->int_level & 1;
    case 24: /* CM_FIQ_STAT */
        return s->int_level & s->fiq_enabled;
    case 25: /* CM_FIQ_RSTAT */
        return s->int_level;
    case 26: /* CM_FIQ_ENSET */
        return s->fiq_enabled;
    case 32: /* CM_VOLTAGE_CTL0 */
    case 33: /* CM_VOLTAGE_CTL1 */
    case 34: /* CM_VOLTAGE_CTL2 */
    case 35: /* CM_VOLTAGE_CTL3 */
        /* ??? Voltage control unimplemented.  */
        return 0;
    default:
        cpu_abort (cpu_single_env,
            "integratorcm_read: Unimplemented offset 0x%x\n", (int)offset);
        return 0;
    }
}

static void integratorcm_do_remap(integratorcm_state *s, int flash)
{
    if (flash) {
        cpu_register_physical_memory(0, 0x100000, IO_MEM_RAM);
    } else {
        cpu_register_physical_memory(0, 0x100000, s->flash_offset | IO_MEM_RAM);
    }
    //??? tlb_flush (cpu_single_env, 1);
}

static void integratorcm_set_ctrl(integratorcm_state *s, uint32_t value)
{
    if (value & 8) {
        cpu_abort(cpu_single_env, "Board reset\n");
    }
    if ((s->cm_init ^ value) & 4) {
        integratorcm_do_remap(s, (value & 4) == 0);
    }
    if ((s->cm_init ^ value) & 1) {
        printf("Green LED %s\n", (value & 1) ? "on" : "off");
    }
    s->cm_init = (s->cm_init & ~ 5) | (value ^ 5);
}

static void integratorcm_update(integratorcm_state *s)
{
    /* ??? The CPU irq/fiq is raised when either the core module or base PIC
       are active.  */
    if (s->int_level & (s->irq_enabled | s->fiq_enabled))
        cpu_abort(cpu_single_env, "Core module interrupt\n");
}

static void integratorcm_write(void *opaque, target_phys_addr_t offset,
                               uint32_t value)
{
    integratorcm_state *s = (integratorcm_state *)opaque;
    switch (offset >> 2) {
    case 2: /* CM_OSC */
        if (s->cm_lock == 0xa05f)
            s->cm_osc = value;
        break;
    case 3: /* CM_CTRL */
        integratorcm_set_ctrl(s, value);
        break;
    case 5: /* CM_LOCK */
        s->cm_lock = value & 0xffff;
        break;
    case 7: /* CM_AUXOSC */
        if (s->cm_lock == 0xa05f)
            s->cm_auxosc = value;
        break;
    case 8: /* CM_SDRAM */
        s->cm_sdram = value;
        break;
    case 9: /* CM_INIT */
        /* ??? This can change the memory bus frequency.  */
        s->cm_init = value;
        break;
    case 12: /* CM_FLAGSS */
        s->cm_flags |= value;
        break;
    case 13: /* CM_FLAGSC */
        s->cm_flags &= ~value;
        break;
    case 14: /* CM_NVFLAGSS */
        s->cm_nvflags |= value;
        break;
    case 15: /* CM_NVFLAGSS */
        s->cm_nvflags &= ~value;
        break;
    case 18: /* CM_IRQ_ENSET */
        s->irq_enabled |= value;
        integratorcm_update(s);
        break;
    case 19: /* CM_IRQ_ENCLR */
        s->irq_enabled &= ~value;
        integratorcm_update(s);
        break;
    case 20: /* CM_SOFT_INTSET */
        s->int_level |= (value & 1);
        integratorcm_update(s);
        break;
    case 21: /* CM_SOFT_INTCLR */
        s->int_level &= ~(value & 1);
        integratorcm_update(s);
        break;
    case 26: /* CM_FIQ_ENSET */
        s->fiq_enabled |= value;
        integratorcm_update(s);
        break;
    case 27: /* CM_FIQ_ENCLR */
        s->fiq_enabled &= ~value;
        integratorcm_update(s);
        break;
    case 32: /* CM_VOLTAGE_CTL0 */
    case 33: /* CM_VOLTAGE_CTL1 */
    case 34: /* CM_VOLTAGE_CTL2 */
    case 35: /* CM_VOLTAGE_CTL3 */
        /* ??? Voltage control unimplemented.  */
        break;
    default:
        cpu_abort (cpu_single_env,
            "integratorcm_write: Unimplemented offset 0x%x\n", (int)offset);
        break;
    }
}

/* Integrator/CM control registers.  */

static CPUReadMemoryFunc *integratorcm_readfn[] = {
   integratorcm_read,
   integratorcm_read,
   integratorcm_read
};

static CPUWriteMemoryFunc *integratorcm_writefn[] = {
   integratorcm_write,
   integratorcm_write,
   integratorcm_write
};

static void integratorcm_init(int memsz)
{
    int iomemtype;
    integratorcm_state *s;

    s = (integratorcm_state *)qemu_mallocz(sizeof(integratorcm_state));
    s->cm_osc = 0x01000048;
    /* ??? What should the high bits of this value be?  */
    s->cm_auxosc = 0x0007feff;
    s->cm_sdram = 0x00011122;
    if (memsz >= 256) {
        integrator_spd[31] = 64;
        s->cm_sdram |= 0x10;
    } else if (memsz >= 128) {
        integrator_spd[31] = 32;
        s->cm_sdram |= 0x0c;
    } else if (memsz >= 64) {
        integrator_spd[31] = 16;
        s->cm_sdram |= 0x08;
    } else if (memsz >= 32) {
        integrator_spd[31] = 4;
        s->cm_sdram |= 0x04;
    } else {
        integrator_spd[31] = 2;
    }
    memcpy(integrator_spd + 73, "QEMU-MEMORY", 11);
    s->cm_init = 0x00000112;
    s->flash_offset = qemu_ram_alloc(0x100000);

    iomemtype = cpu_register_io_memory(0, integratorcm_readfn,
                                       integratorcm_writefn, s);
    cpu_register_physical_memory(0x10000000, 0x00800000, iomemtype);
    integratorcm_do_remap(s, 1);
    /* ??? Save/restore.  */
}

/* Integrator/CP hardware emulation.  */
/* Primary interrupt controller.  */

typedef struct icp_pic_state
{
  uint32_t level;
  uint32_t irq_enabled;
  uint32_t fiq_enabled;
  qemu_irq parent_irq;
  qemu_irq parent_fiq;
} icp_pic_state;

static void icp_pic_update(icp_pic_state *s)
{
    uint32_t flags;

    flags = (s->level & s->irq_enabled);
    qemu_set_irq(s->parent_irq, flags != 0);
    flags = (s->level & s->fiq_enabled);
    qemu_set_irq(s->parent_fiq, flags != 0);
}

static void icp_pic_set_irq(void *opaque, int irq, int level)
{
    icp_pic_state *s = (icp_pic_state *)opaque;
    if (level)
        s->level |= 1 << irq;
    else
        s->level &= ~(1 << irq);
    icp_pic_update(s);
}

static uint32_t icp_pic_read(void *opaque, target_phys_addr_t offset)
{
    icp_pic_state *s = (icp_pic_state *)opaque;

    switch (offset >> 2) {
    case 0: /* IRQ_STATUS */
        return s->level & s->irq_enabled;
    case 1: /* IRQ_RAWSTAT */
        return s->level;
    case 2: /* IRQ_ENABLESET */
        return s->irq_enabled;
    case 4: /* INT_SOFTSET */
        return s->level & 1;
    case 8: /* FRQ_STATUS */
        return s->level & s->fiq_enabled;
    case 9: /* FRQ_RAWSTAT */
        return s->level;
    case 10: /* FRQ_ENABLESET */
        return s->fiq_enabled;
    case 3: /* IRQ_ENABLECLR */
    case 5: /* INT_SOFTCLR */
    case 11: /* FRQ_ENABLECLR */
    default:
        printf ("icp_pic_read: Bad register offset 0x%x\n", (int)offset);
        return 0;
    }
}

static void icp_pic_write(void *opaque, target_phys_addr_t offset,
                          uint32_t value)
{
    icp_pic_state *s = (icp_pic_state *)opaque;

    switch (offset >> 2) {
    case 2: /* IRQ_ENABLESET */
        s->irq_enabled |= value;
        break;
    case 3: /* IRQ_ENABLECLR */
        s->irq_enabled &= ~value;
        break;
    case 4: /* INT_SOFTSET */
        if (value & 1)
            icp_pic_set_irq(s, 0, 1);
        break;
    case 5: /* INT_SOFTCLR */
        if (value & 1)
            icp_pic_set_irq(s, 0, 0);
        break;
    case 10: /* FRQ_ENABLESET */
        s->fiq_enabled |= value;
        break;
    case 11: /* FRQ_ENABLECLR */
        s->fiq_enabled &= ~value;
        break;
    case 0: /* IRQ_STATUS */
    case 1: /* IRQ_RAWSTAT */
    case 8: /* FRQ_STATUS */
    case 9: /* FRQ_RAWSTAT */
    default:
        printf ("icp_pic_write: Bad register offset 0x%x\n", (int)offset);
        return;
    }
    icp_pic_update(s);
}

static CPUReadMemoryFunc *icp_pic_readfn[] = {
   icp_pic_read,
   icp_pic_read,
   icp_pic_read
};

static CPUWriteMemoryFunc *icp_pic_writefn[] = {
   icp_pic_write,
   icp_pic_write,
   icp_pic_write
};

static qemu_irq *icp_pic_init(uint32_t base,
                              qemu_irq parent_irq, qemu_irq parent_fiq)
{
    icp_pic_state *s;
    int iomemtype;
    qemu_irq *qi;

    s = (icp_pic_state *)qemu_mallocz(sizeof(icp_pic_state));
    qi = qemu_allocate_irqs(icp_pic_set_irq, s, 32);
    s->parent_irq = parent_irq;
    s->parent_fiq = parent_fiq;
    iomemtype = cpu_register_io_memory(0, icp_pic_readfn,
                                       icp_pic_writefn, s);
    cpu_register_physical_memory(base, 0x00800000, iomemtype);
    /* ??? Save/restore.  */
    return qi;
}

/* CP control registers.  */
static uint32_t icp_control_read(void *opaque, target_phys_addr_t offset)
{
    switch (offset >> 2) {
    case 0: /* CP_IDFIELD */
        return 0x41034003;
    case 1: /* CP_FLASHPROG */
        return 0;
    case 2: /* CP_INTREG */
        return 0;
    case 3: /* CP_DECODE */
        return 0x11;
    default:
        cpu_abort (cpu_single_env, "icp_control_read: Bad offset %x\n",
                   (int)offset);
        return 0;
    }
}

static void icp_control_write(void *opaque, target_phys_addr_t offset,
                          uint32_t value)
{
    switch (offset >> 2) {
    case 1: /* CP_FLASHPROG */
    case 2: /* CP_INTREG */
    case 3: /* CP_DECODE */
        /* Nothing interesting implemented yet.  */
        break;
    default:
        cpu_abort (cpu_single_env, "icp_control_write: Bad offset %x\n",
                   (int)offset);
    }
}
static CPUReadMemoryFunc *icp_control_readfn[] = {
   icp_control_read,
   icp_control_read,
   icp_control_read
};

static CPUWriteMemoryFunc *icp_control_writefn[] = {
   icp_control_write,
   icp_control_write,
   icp_control_write
};

static void icp_control_init(uint32_t base)
{
    int iomemtype;

    iomemtype = cpu_register_io_memory(0, icp_control_readfn,
                                       icp_control_writefn, NULL);
    cpu_register_physical_memory(base, 0x00800000, iomemtype);
    /* ??? Save/restore.  */
}


/* Board init.  */

static struct arm_boot_info integrator_binfo = {
    .loader_start = 0x0,
    .board_id = 0x113,
};

static void integratorcp_init(ram_addr_t ram_size, int vga_ram_size,
                     const char *boot_device,
                     const char *kernel_filename, const char *kernel_cmdline,
                     const char *initrd_filename, const char *cpu_model)
{
    CPUState *env;
    ram_addr_t ram_offset;
    qemu_irq *pic;
    qemu_irq *cpu_pic;
    int sd;

    if (!cpu_model)
        cpu_model = "arm926";
    env = cpu_init(cpu_model);
    if (!env) {
        fprintf(stderr, "Unable to find CPU definition\n");
        exit(1);
    }
    ram_offset = qemu_ram_alloc(ram_size);
    /* ??? On a real system the first 1Mb is mapped as SSRAM or boot flash.  */
    /* ??? RAM should repeat to fill physical memory space.  */
    /* SDRAM at address zero*/
    cpu_register_physical_memory(0, ram_size, ram_offset | IO_MEM_RAM);
    /* And again at address 0x80000000 */
    cpu_register_physical_memory(0x80000000, ram_size, ram_offset | IO_MEM_RAM);

    integratorcm_init(ram_size >> 20);
    cpu_pic = arm_pic_init_cpu(env);
    pic = icp_pic_init(0x14000000, cpu_pic[ARM_PIC_CPU_IRQ],
                       cpu_pic[ARM_PIC_CPU_FIQ]);
    icp_pic_init(0xca000000, pic[26], NULL);
    icp_pit_init(0x13000000, pic, 5);
    pl031_init(0x15000000, pic[8]);
    pl011_init(0x16000000, pic[1], serial_hds[0], PL011_ARM);
    pl011_init(0x17000000, pic[2], serial_hds[1], PL011_ARM);
    icp_control_init(0xcb000000);
    pl050_init(0x18000000, pic[3], 0);
    pl050_init(0x19000000, pic[4], 1);
    sd = drive_get_index(IF_SD, 0, 0);
    if (sd == -1) {
        fprintf(stderr, "qemu: missing SecureDigital card\n");
        exit(1);
    }
    pl181_init(0x1c000000, drives_table[sd].bdrv, pic[23], pic[24]);
    if (nd_table[0].vlan)
        smc91c111_init(&nd_table[0], 0xc8000000, pic[27]);
    pl110_init(0xc0000000, pic[22], 0);

    integrator_binfo.ram_size = ram_size;
    integrator_binfo.kernel_filename = kernel_filename;
    integrator_binfo.kernel_cmdline = kernel_cmdline;
    integrator_binfo.initrd_filename = initrd_filename;
    arm_load_kernel(env, &integrator_binfo);
}

QEMUMachine integratorcp_machine = {
    .name = "integratorcp",
    .desc = "ARM Integrator/CP (ARM926EJ-S)",
    .init = integratorcp_init,
};