summaryrefslogtreecommitdiff
path: root/hw/z2.c
blob: 654ac55f5c15c003dfc3e27af130892f90d7fa39 (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
/*
 * PXA270-based Zipit Z2 device
 *
 * Copyright (c) 2011 by Vasily Khoruzhick <anarsoul@gmail.com>
 *
 * Code is based on mainstone platform.
 *
 * This code is licensed under the GNU GPL v2.
 *
 * Contributions after 2012-01-13 are licensed under the terms of the
 * GNU GPL, version 2 or (at your option) any later version.
 */

#include "hw.h"
#include "pxa.h"
#include "arm-misc.h"
#include "devices.h"
#include "i2c.h"
#include "ssi.h"
#include "boards.h"
#include "sysemu.h"
#include "flash.h"
#include "blockdev.h"
#include "console.h"
#include "audio/audio.h"
#include "exec-memory.h"

#ifdef DEBUG_Z2
#define DPRINTF(fmt, ...) \
        printf(fmt, ## __VA_ARGS__)
#else
#define DPRINTF(fmt, ...)
#endif

static struct keymap map[0x100] = {
    [0 ... 0xff] = { -1, -1 },
    [0x3b] = {0, 0}, /* Option = F1 */
    [0xc8] = {0, 1}, /* Up */
    [0xd0] = {0, 2}, /* Down */
    [0xcb] = {0, 3}, /* Left */
    [0xcd] = {0, 4}, /* Right */
    [0xcf] = {0, 5}, /* End */
    [0x0d] = {0, 6}, /* KPPLUS */
    [0xc7] = {1, 0}, /* Home */
    [0x10] = {1, 1}, /* Q */
    [0x17] = {1, 2}, /* I */
    [0x22] = {1, 3}, /* G */
    [0x2d] = {1, 4}, /* X */
    [0x1c] = {1, 5}, /* Enter */
    [0x0c] = {1, 6}, /* KPMINUS */
    [0xc9] = {2, 0}, /* PageUp */
    [0x11] = {2, 1}, /* W */
    [0x18] = {2, 2}, /* O */
    [0x23] = {2, 3}, /* H */
    [0x2e] = {2, 4}, /* C */
    [0x38] = {2, 5}, /* LeftAlt */
    [0xd1] = {3, 0}, /* PageDown */
    [0x12] = {3, 1}, /* E */
    [0x19] = {3, 2}, /* P */
    [0x24] = {3, 3}, /* J */
    [0x2f] = {3, 4}, /* V */
    [0x2a] = {3, 5}, /* LeftShift */
    [0x01] = {4, 0}, /* Esc */
    [0x13] = {4, 1}, /* R */
    [0x1e] = {4, 2}, /* A */
    [0x25] = {4, 3}, /* K */
    [0x30] = {4, 4}, /* B */
    [0x1d] = {4, 5}, /* LeftCtrl */
    [0x0f] = {5, 0}, /* Tab */
    [0x14] = {5, 1}, /* T */
    [0x1f] = {5, 2}, /* S */
    [0x26] = {5, 3}, /* L */
    [0x31] = {5, 4}, /* N */
    [0x39] = {5, 5}, /* Space */
    [0x3c] = {6, 0}, /* Stop = F2 */
    [0x15] = {6, 1}, /* Y */
    [0x20] = {6, 2}, /* D */
    [0x0e] = {6, 3}, /* Backspace */
    [0x32] = {6, 4}, /* M */
    [0x33] = {6, 5}, /* Comma */
    [0x3d] = {7, 0}, /* Play = F3 */
    [0x16] = {7, 1}, /* U */
    [0x21] = {7, 2}, /* F */
    [0x2c] = {7, 3}, /* Z */
    [0x27] = {7, 4}, /* Semicolon */
    [0x34] = {7, 5}, /* Dot */
};

#define Z2_RAM_SIZE     0x02000000
#define Z2_FLASH_BASE   0x00000000
#define Z2_FLASH_SIZE   0x00800000

static struct arm_boot_info z2_binfo = {
    .loader_start   = PXA2XX_SDRAM_BASE,
    .ram_size       = Z2_RAM_SIZE,
};

#define Z2_GPIO_SD_DETECT   96
#define Z2_GPIO_AC_IN       0
#define Z2_GPIO_KEY_ON      1
#define Z2_GPIO_LCD_CS      88

typedef struct {
    SSISlave ssidev;
    int32_t selected;
    int32_t enabled;
    uint8_t buf[3];
    uint32_t cur_reg;
    int pos;
} ZipitLCD;

static uint32_t zipit_lcd_transfer(SSISlave *dev, uint32_t value)
{
    ZipitLCD *z = FROM_SSI_SLAVE(ZipitLCD, dev);
    uint16_t val;
    if (z->selected) {
        z->buf[z->pos] = value & 0xff;
        z->pos++;
    }
    if (z->pos == 3) {
        switch (z->buf[0]) {
        case 0x74:
            DPRINTF("%s: reg: 0x%.2x\n", __func__, z->buf[2]);
            z->cur_reg = z->buf[2];
            break;
        case 0x76:
            val = z->buf[1] << 8 | z->buf[2];
            DPRINTF("%s: value: 0x%.4x\n", __func__, val);
            if (z->cur_reg == 0x22 && val == 0x0000) {
                z->enabled = 1;
                printf("%s: LCD enabled\n", __func__);
            } else if (z->cur_reg == 0x10 && val == 0x0000) {
                z->enabled = 0;
                printf("%s: LCD disabled\n", __func__);
            }
            break;
        default:
            DPRINTF("%s: unknown command!\n", __func__);
            break;
        }
        z->pos = 0;
    }
    return 0;
}

static void z2_lcd_cs(void *opaque, int line, int level)
{
    ZipitLCD *z2_lcd = opaque;
    z2_lcd->selected = !level;
}

static int zipit_lcd_init(SSISlave *dev)
{
    ZipitLCD *z = FROM_SSI_SLAVE(ZipitLCD, dev);
    z->selected = 0;
    z->enabled = 0;
    z->pos = 0;

    return 0;
}

static VMStateDescription vmstate_zipit_lcd_state = {
    .name = "zipit-lcd",
    .version_id = 1,
    .minimum_version_id = 1,
    .minimum_version_id_old = 1,
    .fields = (VMStateField[]) {
        VMSTATE_INT32(selected, ZipitLCD),
        VMSTATE_INT32(enabled, ZipitLCD),
        VMSTATE_BUFFER(buf, ZipitLCD),
        VMSTATE_UINT32(cur_reg, ZipitLCD),
        VMSTATE_INT32(pos, ZipitLCD),
        VMSTATE_END_OF_LIST(),
    }
};

static void zipit_lcd_class_init(ObjectClass *klass, void *data)
{
    DeviceClass *dc = DEVICE_CLASS(klass);
    SSISlaveClass *k = SSI_SLAVE_CLASS(klass);

    k->init = zipit_lcd_init;
    k->transfer = zipit_lcd_transfer;
    dc->vmsd = &vmstate_zipit_lcd_state;
}

static TypeInfo zipit_lcd_info = {
    .name          = "zipit-lcd",
    .parent        = TYPE_SSI_SLAVE,
    .instance_size = sizeof(ZipitLCD),
    .class_init    = zipit_lcd_class_init,
};

typedef struct {
    I2CSlave i2c;
    int len;
    uint8_t buf[3];
} AER915State;

static int aer915_send(I2CSlave *i2c, uint8_t data)
{
    AER915State *s = FROM_I2C_SLAVE(AER915State, i2c);
    s->buf[s->len] = data;
    if (s->len++ > 2) {
        DPRINTF("%s: message too long (%i bytes)\n",
            __func__, s->len);
        return 1;
    }

    if (s->len == 2) {
        DPRINTF("%s: reg %d value 0x%02x\n", __func__,
                s->buf[0], s->buf[1]);
    }

    return 0;
}

static void aer915_event(I2CSlave *i2c, enum i2c_event event)
{
    AER915State *s = FROM_I2C_SLAVE(AER915State, i2c);
    switch (event) {
    case I2C_START_SEND:
        s->len = 0;
        break;
    case I2C_START_RECV:
        if (s->len != 1) {
            DPRINTF("%s: short message!?\n", __func__);
        }
        break;
    case I2C_FINISH:
        break;
    default:
        break;
    }
}

static int aer915_recv(I2CSlave *slave)
{
    int retval = 0x00;
    AER915State *s = FROM_I2C_SLAVE(AER915State, slave);

    switch (s->buf[0]) {
    /* Return hardcoded battery voltage,
     * 0xf0 means ~4.1V
     */
    case 0x02:
        retval = 0xf0;
        break;
    /* Return 0x00 for other regs,
     * we don't know what they are for,
     * anyway they return 0x00 on real hardware.
     */
    default:
        break;
    }

    return retval;
}

static int aer915_init(I2CSlave *i2c)
{
    /* Nothing to do.  */
    return 0;
}

static VMStateDescription vmstate_aer915_state = {
    .name = "aer915",
    .version_id = 1,
    .minimum_version_id = 1,
    .minimum_version_id_old = 1,
    .fields = (VMStateField[]) {
        VMSTATE_INT32(len, AER915State),
        VMSTATE_BUFFER(buf, AER915State),
        VMSTATE_END_OF_LIST(),
    }
};

static void aer915_class_init(ObjectClass *klass, void *data)
{
    DeviceClass *dc = DEVICE_CLASS(klass);
    I2CSlaveClass *k = I2C_SLAVE_CLASS(klass);

    k->init = aer915_init;
    k->event = aer915_event;
    k->recv = aer915_recv;
    k->send = aer915_send;
    dc->vmsd = &vmstate_aer915_state;
}

static TypeInfo aer915_info = {
    .name          = "aer915",
    .parent        = TYPE_I2C_SLAVE,
    .instance_size = sizeof(AER915State),
    .class_init    = aer915_class_init,
};

static void z2_init(ram_addr_t ram_size,
                const char *boot_device,
                const char *kernel_filename, const char *kernel_cmdline,
                const char *initrd_filename, const char *cpu_model)
{
    MemoryRegion *address_space_mem = get_system_memory();
    uint32_t sector_len = 0x10000;
    PXA2xxState *cpu;
    DriveInfo *dinfo;
    int be;
    void *z2_lcd;
    i2c_bus *bus;
    DeviceState *wm;

    if (!cpu_model) {
        cpu_model = "pxa270-c5";
    }

    /* Setup CPU & memory */
    cpu = pxa270_init(address_space_mem, z2_binfo.ram_size, cpu_model);

#ifdef TARGET_WORDS_BIGENDIAN
    be = 1;
#else
    be = 0;
#endif
    dinfo = drive_get(IF_PFLASH, 0, 0);
    if (!dinfo) {
        fprintf(stderr, "Flash image must be given with the "
                "'pflash' parameter\n");
        exit(1);
    }

    if (!pflash_cfi01_register(Z2_FLASH_BASE,
                               NULL, "z2.flash0", Z2_FLASH_SIZE,
                               dinfo->bdrv, sector_len,
                               Z2_FLASH_SIZE / sector_len, 4, 0, 0, 0, 0,
                               be)) {
        fprintf(stderr, "qemu: Error registering flash memory.\n");
        exit(1);
    }

    /* setup keypad */
    pxa27x_register_keypad(cpu->kp, map, 0x100);

    /* MMC/SD host */
    pxa2xx_mmci_handlers(cpu->mmc,
        NULL,
        qdev_get_gpio_in(cpu->gpio, Z2_GPIO_SD_DETECT));

    type_register_static(&zipit_lcd_info);
    type_register_static(&aer915_info);
    z2_lcd = ssi_create_slave(cpu->ssp[1], "zipit-lcd");
    bus = pxa2xx_i2c_bus(cpu->i2c[0]);
    i2c_create_slave(bus, "aer915", 0x55);
    wm = i2c_create_slave(bus, "wm8750", 0x1b);
    cpu->i2s->opaque = wm;
    cpu->i2s->codec_out = wm8750_dac_dat;
    cpu->i2s->codec_in = wm8750_adc_dat;
    wm8750_data_req_set(wm, cpu->i2s->data_req, cpu->i2s);

    qdev_connect_gpio_out(cpu->gpio, Z2_GPIO_LCD_CS,
        qemu_allocate_irqs(z2_lcd_cs, z2_lcd, 1)[0]);

    if (kernel_filename) {
        z2_binfo.kernel_filename = kernel_filename;
        z2_binfo.kernel_cmdline = kernel_cmdline;
        z2_binfo.initrd_filename = initrd_filename;
        z2_binfo.board_id = 0x6dd;
        arm_load_kernel(cpu->env, &z2_binfo);
    }
}

static QEMUMachine z2_machine = {
    .name = "z2",
    .desc = "Zipit Z2 (PXA27x)",
    .init = z2_init,
};

static void z2_machine_init(void)
{
    qemu_register_machine(&z2_machine);
}

machine_init(z2_machine_init);