Statistics
| Branch: | Revision:

root / hw / ppc405_boards.c @ 51a65271

History | View | Annotate | Download (19.2 kB)

1
/*
2
 * QEMU PowerPC 405 evaluation boards emulation
3
 *
4
 * Copyright (c) 2007 Jocelyn Mayer
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
#include "vl.h"
25
#include "ppc405.h"
26

    
27
extern int loglevel;
28
extern FILE *logfile;
29

    
30
#define BIOS_FILENAME "ppc405_rom.bin"
31
#undef BIOS_SIZE
32
#define BIOS_SIZE (2048 * 1024)
33

    
34
#define KERNEL_LOAD_ADDR 0x00000000
35
#define INITRD_LOAD_ADDR 0x01800000
36

    
37
#define USE_FLASH_BIOS
38

    
39
#define DEBUG_BOARD_INIT
40

    
41
/*****************************************************************************/
42
/* PPC405EP reference board (IBM) */
43
/* Standalone board with:
44
 * - PowerPC 405EP CPU
45
 * - SDRAM (0x00000000)
46
 * - Flash (0xFFF80000)
47
 * - SRAM  (0xFFF00000)
48
 * - NVRAM (0xF0000000)
49
 * - FPGA  (0xF0300000)
50
 */
51
typedef struct ref405ep_fpga_t ref405ep_fpga_t;
52
struct ref405ep_fpga_t {
53
    uint32_t base;
54
    uint8_t reg0;
55
    uint8_t reg1;
56
};
57

    
58
static uint32_t ref405ep_fpga_readb (void *opaque, target_phys_addr_t addr)
59
{
60
    ref405ep_fpga_t *fpga;
61
    uint32_t ret;
62

    
63
    fpga = opaque;
64
    addr -= fpga->base;
65
    switch (addr) {
66
    case 0x0:
67
        ret = fpga->reg0;
68
        break;
69
    case 0x1:
70
        ret = fpga->reg1;
71
        break;
72
    default:
73
        ret = 0;
74
        break;
75
    }
76

    
77
    return ret;
78
}
79

    
80
static void ref405ep_fpga_writeb (void *opaque,
81
                                  target_phys_addr_t addr, uint32_t value)
82
{
83
    ref405ep_fpga_t *fpga;
84

    
85
    fpga = opaque;
86
    addr -= fpga->base;
87
    switch (addr) {
88
    case 0x0:
89
        /* Read only */
90
        break;
91
    case 0x1:
92
        fpga->reg1 = value;
93
        break;
94
    default:
95
        break;
96
    }
97
}
98

    
99
static uint32_t ref405ep_fpga_readw (void *opaque, target_phys_addr_t addr)
100
{
101
    uint32_t ret;
102

    
103
    ret = ref405ep_fpga_readb(opaque, addr) << 8;
104
    ret |= ref405ep_fpga_readb(opaque, addr + 1);
105

    
106
    return ret;
107
}
108

    
109
static void ref405ep_fpga_writew (void *opaque,
110
                                  target_phys_addr_t addr, uint32_t value)
111
{
112
    ref405ep_fpga_writeb(opaque, addr, (value >> 8) & 0xFF);
113
    ref405ep_fpga_writeb(opaque, addr + 1, value & 0xFF);
114
}
115

    
116
static uint32_t ref405ep_fpga_readl (void *opaque, target_phys_addr_t addr)
117
{
118
    uint32_t ret;
119

    
120
    ret = ref405ep_fpga_readb(opaque, addr) << 24;
121
    ret |= ref405ep_fpga_readb(opaque, addr + 1) << 16;
122
    ret |= ref405ep_fpga_readb(opaque, addr + 2) << 8;
123
    ret |= ref405ep_fpga_readb(opaque, addr + 3);
124

    
125
    return ret;
126
}
127

    
128
static void ref405ep_fpga_writel (void *opaque,
129
                                  target_phys_addr_t addr, uint32_t value)
130
{
131
    ref405ep_fpga_writel(opaque, addr, (value >> 24) & 0xFF);
132
    ref405ep_fpga_writel(opaque, addr + 1, (value >> 16) & 0xFF);
133
    ref405ep_fpga_writel(opaque, addr + 2, (value >> 8) & 0xFF);
134
    ref405ep_fpga_writeb(opaque, addr + 3, value & 0xFF);
135
}
136

    
137
static CPUReadMemoryFunc *ref405ep_fpga_read[] = {
138
    &ref405ep_fpga_readb,
139
    &ref405ep_fpga_readw,
140
    &ref405ep_fpga_readl,
141
};
142

    
143
static CPUWriteMemoryFunc *ref405ep_fpga_write[] = {
144
    &ref405ep_fpga_writeb,
145
    &ref405ep_fpga_writew,
146
    &ref405ep_fpga_writel,
147
};
148

    
149
static void ref405ep_fpga_reset (void *opaque)
150
{
151
    ref405ep_fpga_t *fpga;
152

    
153
    fpga = opaque;
154
    fpga->reg0 = 0x00;
155
    fpga->reg1 = 0x0F;
156
}
157

    
158
static void ref405ep_fpga_init (uint32_t base)
159
{
160
    ref405ep_fpga_t *fpga;
161
    int fpga_memory;
162

    
163
    fpga = qemu_mallocz(sizeof(ref405ep_fpga_t));
164
    if (fpga != NULL) {
165
        fpga->base = base;
166
        fpga_memory = cpu_register_io_memory(0, ref405ep_fpga_read,
167
                                             ref405ep_fpga_write, fpga);
168
        cpu_register_physical_memory(base, 0x00000100, fpga_memory);
169
        ref405ep_fpga_reset(fpga);
170
        qemu_register_reset(&ref405ep_fpga_reset, fpga);
171
    }
172
}
173

    
174
static void ref405ep_init (int ram_size, int vga_ram_size,
175
                           const char *boot_device, DisplayState *ds,
176
                           const char **fd_filename, int snapshot,
177
                           const char *kernel_filename,
178
                           const char *kernel_cmdline,
179
                           const char *initrd_filename,
180
                           const char *cpu_model)
181
{
182
    char buf[1024];
183
    ppc4xx_bd_info_t bd;
184
    CPUPPCState *env;
185
    qemu_irq *pic;
186
    ram_addr_t sram_offset, bios_offset, bdloc;
187
    target_phys_addr_t ram_bases[2], ram_sizes[2];
188
    target_ulong sram_size, bios_size;
189
    //int phy_addr = 0;
190
    //static int phy_addr = 1;
191
    target_ulong kernel_base, kernel_size, initrd_base, initrd_size;
192
    int linux_boot;
193
    int fl_idx, fl_sectors, len;
194
    int ppc_boot_device = boot_device[0];
195

    
196
    /* XXX: fix this */
197
    ram_bases[0] = 0x00000000;
198
    ram_sizes[0] = 0x08000000;
199
    ram_bases[1] = 0x00000000;
200
    ram_sizes[1] = 0x00000000;
201
    ram_size = 128 * 1024 * 1024;
202
#ifdef DEBUG_BOARD_INIT
203
    printf("%s: register cpu\n", __func__);
204
#endif
205
    env = ppc405ep_init(ram_bases, ram_sizes, 33333333, &pic, &sram_offset,
206
                        kernel_filename == NULL ? 0 : 1);
207
    /* allocate SRAM */
208
#ifdef DEBUG_BOARD_INIT
209
    printf("%s: register SRAM at offset %08lx\n", __func__, sram_offset);
210
#endif
211
    sram_size = 512 * 1024;
212
    cpu_register_physical_memory(0xFFF00000, sram_size,
213
                                 sram_offset | IO_MEM_RAM);
214
    /* allocate and load BIOS */
215
#ifdef DEBUG_BOARD_INIT
216
    printf("%s: register BIOS\n", __func__);
217
#endif
218
    bios_offset = sram_offset + sram_size;
219
    fl_idx = 0;
220
#ifdef USE_FLASH_BIOS
221
    if (pflash_table[fl_idx] != NULL) {
222
        bios_size = bdrv_getlength(pflash_table[fl_idx]);
223
        fl_sectors = (bios_size + 65535) >> 16;
224
#ifdef DEBUG_BOARD_INIT
225
        printf("Register parallel flash %d size " ADDRX " at offset %08lx "
226
               " addr " ADDRX " '%s' %d\n",
227
               fl_idx, bios_size, bios_offset, -bios_size,
228
               bdrv_get_device_name(pflash_table[fl_idx]), fl_sectors);
229
#endif
230
        pflash_register((uint32_t)(-bios_size), bios_offset,
231
                        pflash_table[fl_idx], 65536, fl_sectors, 2,
232
                        0x0001, 0x22DA, 0x0000, 0x0000);
233
        fl_idx++;
234
    } else
235
#endif
236
    {
237
#ifdef DEBUG_BOARD_INIT
238
        printf("Load BIOS from file\n");
239
#endif
240
        if (bios_name == NULL)
241
            bios_name = BIOS_FILENAME;
242
        snprintf(buf, sizeof(buf), "%s/%s", bios_dir, bios_name);
243
        bios_size = load_image(buf, phys_ram_base + bios_offset);
244
        if (bios_size < 0 || bios_size > BIOS_SIZE) {
245
            fprintf(stderr, "qemu: could not load PowerPC bios '%s'\n", buf);
246
            exit(1);
247
        }
248
        bios_size = (bios_size + 0xfff) & ~0xfff;
249
        cpu_register_physical_memory((uint32_t)(-bios_size),
250
                                     bios_size, bios_offset | IO_MEM_ROM);
251
    }
252
    bios_offset += bios_size;
253
    /* Register FPGA */
254
#ifdef DEBUG_BOARD_INIT
255
    printf("%s: register FPGA\n", __func__);
256
#endif
257
    ref405ep_fpga_init(0xF0300000);
258
    /* Register NVRAM */
259
#ifdef DEBUG_BOARD_INIT
260
    printf("%s: register NVRAM\n", __func__);
261
#endif
262
    m48t59_init(NULL, 0xF0000000, 0, 8192, 8);
263
    /* Load kernel */
264
    linux_boot = (kernel_filename != NULL);
265
    if (linux_boot) {
266
#ifdef DEBUG_BOARD_INIT
267
        printf("%s: load kernel\n", __func__);
268
#endif
269
        memset(&bd, 0, sizeof(bd));
270
        bd.bi_memstart = 0x00000000;
271
        bd.bi_memsize = ram_size;
272
        bd.bi_flashstart = -bios_size;
273
        bd.bi_flashsize = -bios_size;
274
        bd.bi_flashoffset = 0;
275
        bd.bi_sramstart = 0xFFF00000;
276
        bd.bi_sramsize = sram_size;
277
        bd.bi_bootflags = 0;
278
        bd.bi_intfreq = 133333333;
279
        bd.bi_busfreq = 33333333;
280
        bd.bi_baudrate = 115200;
281
        bd.bi_s_version[0] = 'Q';
282
        bd.bi_s_version[1] = 'M';
283
        bd.bi_s_version[2] = 'U';
284
        bd.bi_s_version[3] = '\0';
285
        bd.bi_r_version[0] = 'Q';
286
        bd.bi_r_version[1] = 'E';
287
        bd.bi_r_version[2] = 'M';
288
        bd.bi_r_version[3] = 'U';
289
        bd.bi_r_version[4] = '\0';
290
        bd.bi_procfreq = 133333333;
291
        bd.bi_plb_busfreq = 33333333;
292
        bd.bi_pci_busfreq = 33333333;
293
        bd.bi_opbfreq = 33333333;
294
        bdloc = ppc405_set_bootinfo(env, &bd, 0x00000001);
295
        env->gpr[3] = bdloc;
296
        kernel_base = KERNEL_LOAD_ADDR;
297
        /* now we can load the kernel */
298
        kernel_size = load_image(kernel_filename, phys_ram_base + kernel_base);
299
        if (kernel_size < 0) {
300
            fprintf(stderr, "qemu: could not load kernel '%s'\n",
301
                    kernel_filename);
302
            exit(1);
303
        }
304
        printf("Load kernel size " TARGET_FMT_ld " at " TARGET_FMT_lx
305
               " %02x %02x %02x %02x\n", kernel_size, kernel_base,
306
               *(char *)(phys_ram_base + kernel_base),
307
               *(char *)(phys_ram_base + kernel_base + 1),
308
               *(char *)(phys_ram_base + kernel_base + 2),
309
               *(char *)(phys_ram_base + kernel_base + 3));
310
        /* load initrd */
311
        if (initrd_filename) {
312
            initrd_base = INITRD_LOAD_ADDR;
313
            initrd_size = load_image(initrd_filename,
314
                                     phys_ram_base + initrd_base);
315
            if (initrd_size < 0) {
316
                fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
317
                        initrd_filename);
318
                exit(1);
319
            }
320
        } else {
321
            initrd_base = 0;
322
            initrd_size = 0;
323
        }
324
        env->gpr[4] = initrd_base;
325
        env->gpr[5] = initrd_size;
326
        ppc_boot_device = 'm';
327
        if (kernel_cmdline != NULL) {
328
            len = strlen(kernel_cmdline);
329
            bdloc -= ((len + 255) & ~255);
330
            memcpy(phys_ram_base + bdloc, kernel_cmdline, len + 1);
331
            env->gpr[6] = bdloc;
332
            env->gpr[7] = bdloc + len;
333
        } else {
334
            env->gpr[6] = 0;
335
            env->gpr[7] = 0;
336
        }
337
        env->nip = KERNEL_LOAD_ADDR;
338
    } else {
339
        kernel_base = 0;
340
        kernel_size = 0;
341
        initrd_base = 0;
342
        initrd_size = 0;
343
        bdloc = 0;
344
    }
345
#ifdef DEBUG_BOARD_INIT
346
    printf("%s: Done\n", __func__);
347
#endif
348
    printf("bdloc %016lx %s\n",
349
           (unsigned long)bdloc, (char *)(phys_ram_base + bdloc));
350
}
351

    
352
QEMUMachine ref405ep_machine = {
353
    "ref405ep",
354
    "ref405ep",
355
    ref405ep_init,
356
};
357

    
358
/*****************************************************************************/
359
/* AMCC Taihu evaluation board */
360
/* - PowerPC 405EP processor
361
 * - SDRAM               128 MB at 0x00000000
362
 * - Boot flash          2 MB   at 0xFFE00000
363
 * - Application flash   32 MB  at 0xFC000000
364
 * - 2 serial ports
365
 * - 2 ethernet PHY
366
 * - 1 USB 1.1 device    0x50000000
367
 * - 1 LCD display       0x50100000
368
 * - 1 CPLD              0x50100000
369
 * - 1 I2C EEPROM
370
 * - 1 I2C thermal sensor
371
 * - a set of LEDs
372
 * - bit-bang SPI port using GPIOs
373
 * - 1 EBC interface connector 0 0x50200000
374
 * - 1 cardbus controller + expansion slot.
375
 * - 1 PCI expansion slot.
376
 */
377
typedef struct taihu_cpld_t taihu_cpld_t;
378
struct taihu_cpld_t {
379
    uint32_t base;
380
    uint8_t reg0;
381
    uint8_t reg1;
382
};
383

    
384
static uint32_t taihu_cpld_readb (void *opaque, target_phys_addr_t addr)
385
{
386
    taihu_cpld_t *cpld;
387
    uint32_t ret;
388

    
389
    cpld = opaque;
390
    addr -= cpld->base;
391
    switch (addr) {
392
    case 0x0:
393
        ret = cpld->reg0;
394
        break;
395
    case 0x1:
396
        ret = cpld->reg1;
397
        break;
398
    default:
399
        ret = 0;
400
        break;
401
    }
402

    
403
    return ret;
404
}
405

    
406
static void taihu_cpld_writeb (void *opaque,
407
                               target_phys_addr_t addr, uint32_t value)
408
{
409
    taihu_cpld_t *cpld;
410

    
411
    cpld = opaque;
412
    addr -= cpld->base;
413
    switch (addr) {
414
    case 0x0:
415
        /* Read only */
416
        break;
417
    case 0x1:
418
        cpld->reg1 = value;
419
        break;
420
    default:
421
        break;
422
    }
423
}
424

    
425
static uint32_t taihu_cpld_readw (void *opaque, target_phys_addr_t addr)
426
{
427
    uint32_t ret;
428

    
429
    ret = taihu_cpld_readb(opaque, addr) << 8;
430
    ret |= taihu_cpld_readb(opaque, addr + 1);
431

    
432
    return ret;
433
}
434

    
435
static void taihu_cpld_writew (void *opaque,
436
                               target_phys_addr_t addr, uint32_t value)
437
{
438
    taihu_cpld_writeb(opaque, addr, (value >> 8) & 0xFF);
439
    taihu_cpld_writeb(opaque, addr + 1, value & 0xFF);
440
}
441

    
442
static uint32_t taihu_cpld_readl (void *opaque, target_phys_addr_t addr)
443
{
444
    uint32_t ret;
445

    
446
    ret = taihu_cpld_readb(opaque, addr) << 24;
447
    ret |= taihu_cpld_readb(opaque, addr + 1) << 16;
448
    ret |= taihu_cpld_readb(opaque, addr + 2) << 8;
449
    ret |= taihu_cpld_readb(opaque, addr + 3);
450

    
451
    return ret;
452
}
453

    
454
static void taihu_cpld_writel (void *opaque,
455
                               target_phys_addr_t addr, uint32_t value)
456
{
457
    taihu_cpld_writel(opaque, addr, (value >> 24) & 0xFF);
458
    taihu_cpld_writel(opaque, addr + 1, (value >> 16) & 0xFF);
459
    taihu_cpld_writel(opaque, addr + 2, (value >> 8) & 0xFF);
460
    taihu_cpld_writeb(opaque, addr + 3, value & 0xFF);
461
}
462

    
463
static CPUReadMemoryFunc *taihu_cpld_read[] = {
464
    &taihu_cpld_readb,
465
    &taihu_cpld_readw,
466
    &taihu_cpld_readl,
467
};
468

    
469
static CPUWriteMemoryFunc *taihu_cpld_write[] = {
470
    &taihu_cpld_writeb,
471
    &taihu_cpld_writew,
472
    &taihu_cpld_writel,
473
};
474

    
475
static void taihu_cpld_reset (void *opaque)
476
{
477
    taihu_cpld_t *cpld;
478

    
479
    cpld = opaque;
480
    cpld->reg0 = 0x01;
481
    cpld->reg1 = 0x80;
482
}
483

    
484
static void taihu_cpld_init (uint32_t base)
485
{
486
    taihu_cpld_t *cpld;
487
    int cpld_memory;
488

    
489
    cpld = qemu_mallocz(sizeof(taihu_cpld_t));
490
    if (cpld != NULL) {
491
        cpld->base = base;
492
        cpld_memory = cpu_register_io_memory(0, taihu_cpld_read,
493
                                             taihu_cpld_write, cpld);
494
        cpu_register_physical_memory(base, 0x00000100, cpld_memory);
495
        taihu_cpld_reset(cpld);
496
        qemu_register_reset(&taihu_cpld_reset, cpld);
497
    }
498
}
499

    
500
static void taihu_405ep_init(int ram_size, int vga_ram_size,
501
                             const char *boot_device, DisplayState *ds,
502
                             const char **fd_filename, int snapshot,
503
                             const char *kernel_filename,
504
                             const char *kernel_cmdline,
505
                             const char *initrd_filename,
506
                             const char *cpu_model)
507
{
508
    char buf[1024];
509
    CPUPPCState *env;
510
    qemu_irq *pic;
511
    ram_addr_t bios_offset;
512
    target_phys_addr_t ram_bases[2], ram_sizes[2];
513
    target_ulong bios_size;
514
    target_ulong kernel_base, kernel_size, initrd_base, initrd_size;
515
    int linux_boot;
516
    int fl_idx, fl_sectors;
517
    int ppc_boot_device = boot_device[0];
518

    
519
    /* RAM is soldered to the board so the size cannot be changed */
520
    ram_bases[0] = 0x00000000;
521
    ram_sizes[0] = 0x04000000;
522
    ram_bases[1] = 0x04000000;
523
    ram_sizes[1] = 0x04000000;
524
#ifdef DEBUG_BOARD_INIT
525
    printf("%s: register cpu\n", __func__);
526
#endif
527
    env = ppc405ep_init(ram_bases, ram_sizes, 33333333, &pic, &bios_offset,
528
                        kernel_filename == NULL ? 0 : 1);
529
    /* allocate and load BIOS */
530
#ifdef DEBUG_BOARD_INIT
531
    printf("%s: register BIOS\n", __func__);
532
#endif
533
    fl_idx = 0;
534
#if defined(USE_FLASH_BIOS)
535
    if (pflash_table[fl_idx] != NULL) {
536
        bios_size = bdrv_getlength(pflash_table[fl_idx]);
537
        /* XXX: should check that size is 2MB */
538
        //        bios_size = 2 * 1024 * 1024;
539
        fl_sectors = (bios_size + 65535) >> 16;
540
#ifdef DEBUG_BOARD_INIT
541
        printf("Register parallel flash %d size " ADDRX " at offset %08lx "
542
               " addr " ADDRX " '%s' %d\n",
543
               fl_idx, bios_size, bios_offset, -bios_size,
544
               bdrv_get_device_name(pflash_table[fl_idx]), fl_sectors);
545
#endif
546
        pflash_register((uint32_t)(-bios_size), bios_offset,
547
                        pflash_table[fl_idx], 65536, fl_sectors, 4,
548
                        0x0001, 0x22DA, 0x0000, 0x0000);
549
        fl_idx++;
550
    } else
551
#endif
552
    {
553
#ifdef DEBUG_BOARD_INIT
554
        printf("Load BIOS from file\n");
555
#endif
556
        if (bios_name == NULL)
557
            bios_name = BIOS_FILENAME;
558
        snprintf(buf, sizeof(buf), "%s/%s", bios_dir, bios_name);
559
        bios_size = load_image(buf, phys_ram_base + bios_offset);
560
        if (bios_size < 0 || bios_size > BIOS_SIZE) {
561
            fprintf(stderr, "qemu: could not load PowerPC bios '%s'\n", buf);
562
            exit(1);
563
        }
564
        bios_size = (bios_size + 0xfff) & ~0xfff;
565
        cpu_register_physical_memory((uint32_t)(-bios_size),
566
                                     bios_size, bios_offset | IO_MEM_ROM);
567
    }
568
    bios_offset += bios_size;
569
    /* Register Linux flash */
570
    if (pflash_table[fl_idx] != NULL) {
571
        bios_size = bdrv_getlength(pflash_table[fl_idx]);
572
        /* XXX: should check that size is 32MB */
573
        bios_size = 32 * 1024 * 1024;
574
        fl_sectors = (bios_size + 65535) >> 16;
575
#ifdef DEBUG_BOARD_INIT
576
        printf("Register parallel flash %d size " ADDRX " at offset %08lx "
577
               " addr " ADDRX " '%s'\n",
578
               fl_idx, bios_size, bios_offset, (target_ulong)0xfc000000,
579
               bdrv_get_device_name(pflash_table[fl_idx]));
580
#endif
581
        pflash_register(0xfc000000, bios_offset, pflash_table[fl_idx],
582
                        65536, fl_sectors, 4,
583
                        0x0001, 0x22DA, 0x0000, 0x0000);
584
        fl_idx++;
585
    }
586
    /* Register CLPD & LCD display */
587
#ifdef DEBUG_BOARD_INIT
588
    printf("%s: register CPLD\n", __func__);
589
#endif
590
    taihu_cpld_init(0x50100000);
591
    /* Load kernel */
592
    linux_boot = (kernel_filename != NULL);
593
    if (linux_boot) {
594
#ifdef DEBUG_BOARD_INIT
595
        printf("%s: load kernel\n", __func__);
596
#endif
597
        kernel_base = KERNEL_LOAD_ADDR;
598
        /* now we can load the kernel */
599
        kernel_size = load_image(kernel_filename, phys_ram_base + kernel_base);
600
        if (kernel_size < 0) {
601
            fprintf(stderr, "qemu: could not load kernel '%s'\n",
602
                    kernel_filename);
603
            exit(1);
604
        }
605
        /* load initrd */
606
        if (initrd_filename) {
607
            initrd_base = INITRD_LOAD_ADDR;
608
            initrd_size = load_image(initrd_filename,
609
                                     phys_ram_base + initrd_base);
610
            if (initrd_size < 0) {
611
                fprintf(stderr,
612
                        "qemu: could not load initial ram disk '%s'\n",
613
                        initrd_filename);
614
                exit(1);
615
            }
616
        } else {
617
            initrd_base = 0;
618
            initrd_size = 0;
619
        }
620
        ppc_boot_device = 'm';
621
    } else {
622
        kernel_base = 0;
623
        kernel_size = 0;
624
        initrd_base = 0;
625
        initrd_size = 0;
626
    }
627
#ifdef DEBUG_BOARD_INIT
628
    printf("%s: Done\n", __func__);
629
#endif
630
}
631

    
632
QEMUMachine taihu_machine = {
633
    "taihu",
634
    "taihu",
635
    taihu_405ep_init,
636
};