aboutsummaryrefslogtreecommitdiff
path: root/hw/sun4u.c
blob: 3b08340536ca2777e48f987ac75a70dfef9c7ce8 (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
/*
 * QEMU Sun4u System Emulator
 *
 * Copyright (c) 2005 Fabrice Bellard
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
#include "vl.h"
#include "m48t59.h"

#define KERNEL_LOAD_ADDR     0x00404000
#define CMDLINE_ADDR         0x003ff000
#define INITRD_LOAD_ADDR     0x00300000
#define PROM_SIZE_MAX        (512 * 1024)
#define PROM_ADDR            0x1fff0000000ULL
#define PROM_VADDR           0x000ffd00000ULL
#define APB_SPECIAL_BASE     0x1fe00000000ULL
#define APB_MEM_BASE         0x1ff00000000ULL
#define VGA_BASE             (APB_MEM_BASE + 0x400000ULL)
#define PROM_FILENAME        "openbios-sparc64"
#define NVRAM_SIZE           0x2000

/* TSC handling */

uint64_t cpu_get_tsc()
{
    return qemu_get_clock(vm_clock);
}

int DMA_get_channel_mode (int nchan)
{
    return 0;
}
int DMA_read_memory (int nchan, void *buf, int pos, int size)
{
    return 0;
}
int DMA_write_memory (int nchan, void *buf, int pos, int size)
{
    return 0;
}
void DMA_hold_DREQ (int nchan) {}
void DMA_release_DREQ (int nchan) {}
void DMA_schedule(int nchan) {}
void DMA_run (void) {}
void DMA_init (int high_page_enable) {}
void DMA_register_channel (int nchan,
                           DMA_transfer_handler transfer_handler,
                           void *opaque)
{
}

/* NVRAM helpers */
void NVRAM_set_byte (m48t59_t *nvram, uint32_t addr, uint8_t value)
{
    m48t59_write(nvram, addr, value);
}

uint8_t NVRAM_get_byte (m48t59_t *nvram, uint32_t addr)
{
    return m48t59_read(nvram, addr);
}

void NVRAM_set_word (m48t59_t *nvram, uint32_t addr, uint16_t value)
{
    m48t59_write(nvram, addr, value >> 8);
    m48t59_write(nvram, addr + 1, value & 0xFF);
}

uint16_t NVRAM_get_word (m48t59_t *nvram, uint32_t addr)
{
    uint16_t tmp;

    tmp = m48t59_read(nvram, addr) << 8;
    tmp |= m48t59_read(nvram, addr + 1);

    return tmp;
}

void NVRAM_set_lword (m48t59_t *nvram, uint32_t addr, uint32_t value)
{
    m48t59_write(nvram, addr, value >> 24);
    m48t59_write(nvram, addr + 1, (value >> 16) & 0xFF);
    m48t59_write(nvram, addr + 2, (value >> 8) & 0xFF);
    m48t59_write(nvram, addr + 3, value & 0xFF);
}

uint32_t NVRAM_get_lword (m48t59_t *nvram, uint32_t addr)
{
    uint32_t tmp;

    tmp = m48t59_read(nvram, addr) << 24;
    tmp |= m48t59_read(nvram, addr + 1) << 16;
    tmp |= m48t59_read(nvram, addr + 2) << 8;
    tmp |= m48t59_read(nvram, addr + 3);

    return tmp;
}

void NVRAM_set_string (m48t59_t *nvram, uint32_t addr,
                       const unsigned char *str, uint32_t max)
{
    int i;

    for (i = 0; i < max && str[i] != '\0'; i++) {
        m48t59_write(nvram, addr + i, str[i]);
    }
    m48t59_write(nvram, addr + max - 1, '\0');
}

int NVRAM_get_string (m48t59_t *nvram, uint8_t *dst, uint16_t addr, int max)
{
    int i;

    memset(dst, 0, max);
    for (i = 0; i < max; i++) {
        dst[i] = NVRAM_get_byte(nvram, addr + i);
        if (dst[i] == '\0')
            break;
    }

    return i;
}

static uint16_t NVRAM_crc_update (uint16_t prev, uint16_t value)
{
    uint16_t tmp;
    uint16_t pd, pd1, pd2;

    tmp = prev >> 8;
    pd = prev ^ value;
    pd1 = pd & 0x000F;
    pd2 = ((pd >> 4) & 0x000F) ^ pd1;
    tmp ^= (pd1 << 3) | (pd1 << 8);
    tmp ^= pd2 | (pd2 << 7) | (pd2 << 12);

    return tmp;
}

uint16_t NVRAM_compute_crc (m48t59_t *nvram, uint32_t start, uint32_t count)
{
    uint32_t i;
    uint16_t crc = 0xFFFF;
    int odd;

    odd = count & 1;
    count &= ~1;
    for (i = 0; i != count; i++) {
        crc = NVRAM_crc_update(crc, NVRAM_get_word(nvram, start + i));
    }
    if (odd) {
        crc = NVRAM_crc_update(crc, NVRAM_get_byte(nvram, start + i) << 8);
    }

    return crc;
}

static uint32_t nvram_set_var (m48t59_t *nvram, uint32_t addr,
                                const unsigned char *str)
{
    uint32_t len;

    len = strlen(str) + 1;
    NVRAM_set_string(nvram, addr, str, len);

    return addr + len;
}

static void nvram_finish_partition (m48t59_t *nvram, uint32_t start,
                                    uint32_t end)
{
    unsigned int i, sum;

    // Length divided by 16
    m48t59_write(nvram, start + 2, ((end - start) >> 12) & 0xff);
    m48t59_write(nvram, start + 3, ((end - start) >> 4) & 0xff);
    // Checksum
    sum = m48t59_read(nvram, start);
    for (i = 0; i < 14; i++) {
        sum += m48t59_read(nvram, start + 2 + i);
        sum = (sum + ((sum & 0xff00) >> 8)) & 0xff;
    }
    m48t59_write(nvram, start + 1, sum & 0xff);
}

extern int nographic;

int sun4u_NVRAM_set_params (m48t59_t *nvram, uint16_t NVRAM_size,
                          const unsigned char *arch,
                          uint32_t RAM_size, int boot_device,
                          uint32_t kernel_image, uint32_t kernel_size,
                          const char *cmdline,
                          uint32_t initrd_image, uint32_t initrd_size,
                          uint32_t NVRAM_image,
                          int width, int height, int depth)
{
    uint16_t crc;
    unsigned int i;
    uint32_t start, end;

    /* Set parameters for Open Hack'Ware BIOS */
    NVRAM_set_string(nvram, 0x00, "QEMU_BIOS", 16);
    NVRAM_set_lword(nvram,  0x10, 0x00000002); /* structure v2 */
    NVRAM_set_word(nvram,   0x14, NVRAM_size);
    NVRAM_set_string(nvram, 0x20, arch, 16);
    NVRAM_set_byte(nvram,   0x2f, nographic & 0xff);
    NVRAM_set_lword(nvram,  0x30, RAM_size);
    NVRAM_set_byte(nvram,   0x34, boot_device);
    NVRAM_set_lword(nvram,  0x38, kernel_image);
    NVRAM_set_lword(nvram,  0x3C, kernel_size);
    if (cmdline) {
        /* XXX: put the cmdline in NVRAM too ? */
        strcpy(phys_ram_base + CMDLINE_ADDR, cmdline);
        NVRAM_set_lword(nvram,  0x40, CMDLINE_ADDR);
        NVRAM_set_lword(nvram,  0x44, strlen(cmdline));
    } else {
        NVRAM_set_lword(nvram,  0x40, 0);
        NVRAM_set_lword(nvram,  0x44, 0);
    }
    NVRAM_set_lword(nvram,  0x48, initrd_image);
    NVRAM_set_lword(nvram,  0x4C, initrd_size);
    NVRAM_set_lword(nvram,  0x50, NVRAM_image);

    NVRAM_set_word(nvram,   0x54, width);
    NVRAM_set_word(nvram,   0x56, height);
    NVRAM_set_word(nvram,   0x58, depth);
    crc = NVRAM_compute_crc(nvram, 0x00, 0xF8);
    NVRAM_set_word(nvram,  0xFC, crc);

    // OpenBIOS nvram variables
    // Variable partition
    start = 256;
    m48t59_write(nvram, start, 0x70);
    NVRAM_set_string(nvram, start + 4, "system", 12);

    end = start + 16;
    for (i = 0; i < nb_prom_envs; i++)
        end = nvram_set_var(nvram, end, prom_envs[i]);

    m48t59_write(nvram, end++ , 0);
    end = start + ((end - start + 15) & ~15);
    nvram_finish_partition(nvram, start, end);

    // free partition
    start = end;
    m48t59_write(nvram, start, 0x7f);
    NVRAM_set_string(nvram, start + 4, "free", 12);

    end = 0x1fd0;
    nvram_finish_partition(nvram, start, end);

    return 0;
}

void pic_info()
{
}

void irq_info()
{
}

void qemu_system_powerdown(void)
{
}

static void main_cpu_reset(void *opaque)
{
    CPUState *env = opaque;

    cpu_reset(env);
    ptimer_set_limit(env->tick, 0x7fffffffffffffffULL, 1);
    ptimer_run(env->tick, 0);
    ptimer_set_limit(env->stick, 0x7fffffffffffffffULL, 1);
    ptimer_run(env->stick, 0);
    ptimer_set_limit(env->hstick, 0x7fffffffffffffffULL, 1);
    ptimer_run(env->hstick, 0);
}

void tick_irq(void *opaque)
{
    CPUState *env = opaque;

    cpu_interrupt(env, CPU_INTERRUPT_TIMER);
}

void stick_irq(void *opaque)
{
    CPUState *env = opaque;

    cpu_interrupt(env, CPU_INTERRUPT_TIMER);
}

void hstick_irq(void *opaque)
{
    CPUState *env = opaque;

    cpu_interrupt(env, CPU_INTERRUPT_TIMER);
}

static void dummy_cpu_set_irq(void *opaque, int irq, int level)
{
}

static const int ide_iobase[2] = { 0x1f0, 0x170 };
static const int ide_iobase2[2] = { 0x3f6, 0x376 };
static const int ide_irq[2] = { 14, 15 };

static const int serial_io[MAX_SERIAL_PORTS] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8 };
static const int serial_irq[MAX_SERIAL_PORTS] = { 4, 3, 4, 3 };

static const int parallel_io[MAX_PARALLEL_PORTS] = { 0x378, 0x278, 0x3bc };
static const int parallel_irq[MAX_PARALLEL_PORTS] = { 7, 7, 7 };

static fdctrl_t *floppy_controller;

/* Sun4u hardware initialisation */
static void sun4u_init(int ram_size, int vga_ram_size, int boot_device,
             DisplayState *ds, const char **fd_filename, int snapshot,
             const char *kernel_filename, const char *kernel_cmdline,
             const char *initrd_filename, const char *cpu_model)
{
    CPUState *env;
    char buf[1024];
    m48t59_t *nvram;
    int ret, linux_boot;
    unsigned int i;
    long prom_offset, initrd_size, kernel_size;
    PCIBus *pci_bus;
    const sparc_def_t *def;
    QEMUBH *bh;
    qemu_irq *irq;

    linux_boot = (kernel_filename != NULL);

    /* init CPUs */
    if (cpu_model == NULL)
        cpu_model = "TI UltraSparc II";
    sparc_find_by_name(cpu_model, &def);
    if (def == NULL) {
        fprintf(stderr, "Unable to find Sparc CPU definition\n");
        exit(1);
    }
    env = cpu_init();
    cpu_sparc_register(env, def);
    bh = qemu_bh_new(tick_irq, env);
    env->tick = ptimer_init(bh);
    ptimer_set_period(env->tick, 1ULL);

    bh = qemu_bh_new(stick_irq, env);
    env->stick = ptimer_init(bh);
    ptimer_set_period(env->stick, 1ULL);

    bh = qemu_bh_new(hstick_irq, env);
    env->hstick = ptimer_init(bh);
    ptimer_set_period(env->hstick, 1ULL);
    register_savevm("cpu", 0, 3, cpu_save, cpu_load, env);
    qemu_register_reset(main_cpu_reset, env);
    main_cpu_reset(env);

    /* allocate RAM */
    cpu_register_physical_memory(0, ram_size, 0);

    prom_offset = ram_size + vga_ram_size;
    cpu_register_physical_memory(PROM_ADDR,
                                 (PROM_SIZE_MAX + TARGET_PAGE_SIZE) & TARGET_PAGE_MASK,
                                 prom_offset | IO_MEM_ROM);

    if (bios_name == NULL)
        bios_name = PROM_FILENAME;
    snprintf(buf, sizeof(buf), "%s/%s", bios_dir, bios_name);
    ret = load_elf(buf, PROM_ADDR - PROM_VADDR, NULL, NULL, NULL);
    if (ret < 0) {
        fprintf(stderr, "qemu: could not load prom '%s'\n",
                buf);
        exit(1);
    }

    kernel_size = 0;
    initrd_size = 0;
    if (linux_boot) {
        /* XXX: put correct offset */
        kernel_size = load_elf(kernel_filename, 0, NULL, NULL, NULL);
        if (kernel_size < 0)
            kernel_size = load_aout(kernel_filename, phys_ram_base + KERNEL_LOAD_ADDR);
        if (kernel_size < 0)
            kernel_size = load_image(kernel_filename, phys_ram_base + KERNEL_LOAD_ADDR);
        if (kernel_size < 0) {
            fprintf(stderr, "qemu: could not load kernel '%s'\n",
                    kernel_filename);
            exit(1);
        }

        /* load initrd */
        if (initrd_filename) {
            initrd_size = load_image(initrd_filename, phys_ram_base + INITRD_LOAD_ADDR);
            if (initrd_size < 0) {
                fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
                        initrd_filename);
                exit(1);
            }
        }
        if (initrd_size > 0) {
            for (i = 0; i < 64 * TARGET_PAGE_SIZE; i += TARGET_PAGE_SIZE) {
                if (ldl_raw(phys_ram_base + KERNEL_LOAD_ADDR + i)
                    == 0x48647253) { // HdrS
                    stl_raw(phys_ram_base + KERNEL_LOAD_ADDR + i + 16, INITRD_LOAD_ADDR);
                    stl_raw(phys_ram_base + KERNEL_LOAD_ADDR + i + 20, initrd_size);
                    break;
                }
            }
        }
    }
    pci_bus = pci_apb_init(APB_SPECIAL_BASE, APB_MEM_BASE, NULL);
    isa_mem_base = VGA_BASE;
    pci_cirrus_vga_init(pci_bus, ds, phys_ram_base + ram_size, ram_size, vga_ram_size);

    for(i = 0; i < MAX_SERIAL_PORTS; i++) {
        if (serial_hds[i]) {
            serial_init(serial_io[i], NULL/*serial_irq[i]*/, serial_hds[i]);
        }
    }

    for(i = 0; i < MAX_PARALLEL_PORTS; i++) {
        if (parallel_hds[i]) {
            parallel_init(parallel_io[i], NULL/*parallel_irq[i]*/, parallel_hds[i]);
        }
    }

    for(i = 0; i < nb_nics; i++) {
        if (!nd_table[i].model)
            nd_table[i].model = "ne2k_pci";
        pci_nic_init(pci_bus, &nd_table[i], -1);
    }

    irq = qemu_allocate_irqs(dummy_cpu_set_irq, NULL, 32);
    // XXX pci_cmd646_ide_init(pci_bus, bs_table, 1);
    pci_piix3_ide_init(pci_bus, bs_table, -1, irq);
    /* FIXME: wire up interrupts.  */
    i8042_init(NULL/*1*/, NULL/*12*/, 0x60);
    floppy_controller = fdctrl_init(NULL/*6*/, 2, 0, 0x3f0, fd_table);
    nvram = m48t59_init(NULL/*8*/, 0, 0x0074, NVRAM_SIZE, 59);
    sun4u_NVRAM_set_params(nvram, NVRAM_SIZE, "Sun4u", ram_size, boot_device,
                         KERNEL_LOAD_ADDR, kernel_size,
                         kernel_cmdline,
                         INITRD_LOAD_ADDR, initrd_size,
                         /* XXX: need an option to load a NVRAM image */
                         0,
                         graphic_width, graphic_height, graphic_depth);

}

QEMUMachine sun4u_machine = {
    "sun4u",
    "Sun4u platform",
    sun4u_init,
};