hw/arm/z2.c

   1 /*
   2  * PXA270-based Zipit Z2 device
   3  *
   4  * Copyright (c) 2011 by Vasily Khoruzhick <anarsoul@gmail.com>
   5  *
   6  * Code is based on mainstone platform.
   7  *
   8  * This code is licensed under the GNU GPL v2.
   9  *
  10  * Contributions after 2012-01-13 are licensed under the terms of the
  11  * GNU GPL, version 2 or (at your option) any later version.
  12  */
  13
  14 #include "qemu/osdep.h"
  15 #include "qemu/units.h"
  16 #include "hw/arm/pxa.h"
  17 #include "hw/arm/boot.h"
  18 #include "hw/i2c/i2c.h"
  19 #include "hw/irq.h"
  20 #include "hw/ssi/ssi.h"
  21 #include "migration/vmstate.h"
  22 #include "hw/boards.h"
  23 #include "hw/block/flash.h"
  24 #include "ui/console.h"
  25 #include "hw/audio/wm8750.h"
  26 #include "audio/audio.h"
  27 #include "exec/address-spaces.h"
  28 #include "cpu.h"
  29 #include "qom/object.h"
  30 #include "qapi/error.h"
  31
  32 #ifdef DEBUG_Z2
  33 #define DPRINTF(fmt, ...) \
  34         printf(fmt, ## __VA_ARGS__)
  35 #else
  36 #define DPRINTF(fmt, ...)
  37 #endif
  38
  39 static const struct keymap map[0x100] = {
  40     [0 ... 0xff] = { -1, -1 },
  41     [0x3b] = {0, 0}, /* Option = F1 */
  42     [0xc8] = {0, 1}, /* Up */
  43     [0xd0] = {0, 2}, /* Down */
  44     [0xcb] = {0, 3}, /* Left */
  45     [0xcd] = {0, 4}, /* Right */
  46     [0xcf] = {0, 5}, /* End */
  47     [0x0d] = {0, 6}, /* KPPLUS */
  48     [0xc7] = {1, 0}, /* Home */
  49     [0x10] = {1, 1}, /* Q */
  50     [0x17] = {1, 2}, /* I */
  51     [0x22] = {1, 3}, /* G */
  52     [0x2d] = {1, 4}, /* X */
  53     [0x1c] = {1, 5}, /* Enter */
  54     [0x0c] = {1, 6}, /* KPMINUS */
  55     [0xc9] = {2, 0}, /* PageUp */
  56     [0x11] = {2, 1}, /* W */
  57     [0x18] = {2, 2}, /* O */
  58     [0x23] = {2, 3}, /* H */
  59     [0x2e] = {2, 4}, /* C */
  60     [0x38] = {2, 5}, /* LeftAlt */
  61     [0xd1] = {3, 0}, /* PageDown */
  62     [0x12] = {3, 1}, /* E */
  63     [0x19] = {3, 2}, /* P */
  64     [0x24] = {3, 3}, /* J */
  65     [0x2f] = {3, 4}, /* V */
  66     [0x2a] = {3, 5}, /* LeftShift */
  67     [0x01] = {4, 0}, /* Esc */
  68     [0x13] = {4, 1}, /* R */
  69     [0x1e] = {4, 2}, /* A */
  70     [0x25] = {4, 3}, /* K */
  71     [0x30] = {4, 4}, /* B */
  72     [0x1d] = {4, 5}, /* LeftCtrl */
  73     [0x0f] = {5, 0}, /* Tab */
  74     [0x14] = {5, 1}, /* T */
  75     [0x1f] = {5, 2}, /* S */
  76     [0x26] = {5, 3}, /* L */
  77     [0x31] = {5, 4}, /* N */
  78     [0x39] = {5, 5}, /* Space */
  79     [0x3c] = {6, 0}, /* Stop = F2 */
  80     [0x15] = {6, 1}, /* Y */
  81     [0x20] = {6, 2}, /* D */
  82     [0x0e] = {6, 3}, /* Backspace */
  83     [0x32] = {6, 4}, /* M */
  84     [0x33] = {6, 5}, /* Comma */
  85     [0x3d] = {7, 0}, /* Play = F3 */
  86     [0x16] = {7, 1}, /* U */
  87     [0x21] = {7, 2}, /* F */
  88     [0x2c] = {7, 3}, /* Z */
  89     [0x27] = {7, 4}, /* Semicolon */
  90     [0x34] = {7, 5}, /* Dot */
  91 };
  92
  93 #define Z2_RAM_SIZE     0x02000000
  94 #define Z2_FLASH_BASE   0x00000000
  95 #define Z2_FLASH_SIZE   0x00800000
  96
  97 static struct arm_boot_info z2_binfo = {
  98     .loader_start   = PXA2XX_SDRAM_BASE,
  99     .ram_size       = Z2_RAM_SIZE,
 100 };
 101
 102 #define Z2_GPIO_SD_DETECT   96
 103 #define Z2_GPIO_AC_IN       0
 104 #define Z2_GPIO_KEY_ON      1
 105 #define Z2_GPIO_LCD_CS      88
 106
 107 struct ZipitLCD {
 108     SSIPeripheral ssidev;
 109     int32_t selected;
 110     int32_t enabled;
 111     uint8_t buf[3];
 112     uint32_t cur_reg;
 113     int pos;
 114 };
 115
 116 #define TYPE_ZIPIT_LCD "zipit-lcd"
 117 OBJECT_DECLARE_SIMPLE_TYPE(ZipitLCD, ZIPIT_LCD)
 118
 119 static uint32_t zipit_lcd_transfer(SSIPeripheral *dev, uint32_t value)
 120 {
 121     ZipitLCD *z = ZIPIT_LCD(dev);
 122     uint16_t val;
 123     if (z->selected) {
 124         z->buf[z->pos] = value & 0xff;
 125         z->pos++;
 126     }
 127     if (z->pos == 3) {
 128         switch (z->buf[0]) {
 129         case 0x74:
 130             DPRINTF("%s: reg: 0x%.2x\n", __func__, z->buf[2]);
 131             z->cur_reg = z->buf[2];
 132             break;
 133         case 0x76:
 134             val = z->buf[1] << 8 | z->buf[2];
 135             DPRINTF("%s: value: 0x%.4x\n", __func__, val);
 136             if (z->cur_reg == 0x22 && val == 0x0000) {
 137                 z->enabled = 1;
 138                 printf("%s: LCD enabled\n", __func__);
 139             } else if (z->cur_reg == 0x10 && val == 0x0000) {
 140                 z->enabled = 0;
 141                 printf("%s: LCD disabled\n", __func__);
 142             }
 143             break;
 144         default:
 145             DPRINTF("%s: unknown command!\n", __func__);
 146             break;
 147         }
 148         z->pos = 0;
 149     }
 150     return 0;
 151 }
 152
 153 static void z2_lcd_cs(void *opaque, int line, int level)
 154 {
 155     ZipitLCD *z2_lcd = opaque;
 156     z2_lcd->selected = !level;
 157 }
 158
 159 static void zipit_lcd_realize(SSIPeripheral *dev, Error **errp)
 160 {
 161     ZipitLCD *z = ZIPIT_LCD(dev);
 162     z->selected = 0;
 163     z->enabled = 0;
 164     z->pos = 0;
 165 }
 166
 167 static const VMStateDescription vmstate_zipit_lcd_state = {
 168     .name = "zipit-lcd",
 169     .version_id = 2,
 170     .minimum_version_id = 2,
 171     .fields = (VMStateField[]) {
 172         VMSTATE_SSI_PERIPHERAL(ssidev, ZipitLCD),
 173         VMSTATE_INT32(selected, ZipitLCD),
 174         VMSTATE_INT32(enabled, ZipitLCD),
 175         VMSTATE_BUFFER(buf, ZipitLCD),
 176         VMSTATE_UINT32(cur_reg, ZipitLCD),
 177         VMSTATE_INT32(pos, ZipitLCD),
 178         VMSTATE_END_OF_LIST(),
 179     }
 180 };
 181
 182 static void zipit_lcd_class_init(ObjectClass *klass, void *data)
 183 {
 184     DeviceClass *dc = DEVICE_CLASS(klass);
 185     SSIPeripheralClass *k = SSI_PERIPHERAL_CLASS(klass);
 186
 187     k->realize = zipit_lcd_realize;
 188     k->transfer = zipit_lcd_transfer;
 189     dc->vmsd = &vmstate_zipit_lcd_state;
 190 }
 191
 192 static const TypeInfo zipit_lcd_info = {
 193     .name          = TYPE_ZIPIT_LCD,
 194     .parent        = TYPE_SSI_PERIPHERAL,
 195     .instance_size = sizeof(ZipitLCD),
 196     .class_init    = zipit_lcd_class_init,
 197 };
 198
 199 #define TYPE_AER915 "aer915"
 200 OBJECT_DECLARE_SIMPLE_TYPE(AER915State, AER915)
 201
 202 struct AER915State {
 203     I2CSlave parent_obj;
 204
 205     int len;
 206     uint8_t buf[3];
 207 };
 208
 209 static int aer915_send(I2CSlave *i2c, uint8_t data)
 210 {
 211     AER915State *s = AER915(i2c);
 212
 213     s->buf[s->len] = data;
 214     if (s->len++ > 2) {
 215         DPRINTF("%s: message too long (%i bytes)\n",
 216             __func__, s->len);
 217         return 1;
 218     }
 219
 220     if (s->len == 2) {
 221         DPRINTF("%s: reg %d value 0x%02x\n", __func__,
 222                 s->buf[0], s->buf[1]);
 223     }
 224
 225     return 0;
 226 }
 227
 228 static int aer915_event(I2CSlave *i2c, enum i2c_event event)
 229 {
 230     AER915State *s = AER915(i2c);
 231
 232     switch (event) {
 233     case I2C_START_SEND:
 234         s->len = 0;
 235         break;
 236     case I2C_START_RECV:
 237         if (s->len != 1) {
 238             DPRINTF("%s: short message!?\n", __func__);
 239         }
 240         break;
 241     case I2C_FINISH:
 242         break;
 243     default:
 244         break;
 245     }
 246
 247     return 0;
 248 }
 249
 250 static uint8_t aer915_recv(I2CSlave *slave)
 251 {
 252     AER915State *s = AER915(slave);
 253     int retval = 0x00;
 254
 255     switch (s->buf[0]) {
 256     /* Return hardcoded battery voltage,
 257      * 0xf0 means ~4.1V
 258      */
 259     case 0x02:
 260         retval = 0xf0;
 261         break;
 262     /* Return 0x00 for other regs,
 263      * we don't know what they are for,
 264      * anyway they return 0x00 on real hardware.
 265      */
 266     default:
 267         break;
 268     }
 269
 270     return retval;
 271 }
 272
 273 static const VMStateDescription vmstate_aer915_state = {
 274     .name = "aer915",
 275     .version_id = 1,
 276     .minimum_version_id = 1,
 277     .fields = (VMStateField[]) {
 278         VMSTATE_INT32(len, AER915State),
 279         VMSTATE_BUFFER(buf, AER915State),
 280         VMSTATE_END_OF_LIST(),
 281     }
 282 };
 283
 284 static void aer915_class_init(ObjectClass *klass, void *data)
 285 {
 286     DeviceClass *dc = DEVICE_CLASS(klass);
 287     I2CSlaveClass *k = I2C_SLAVE_CLASS(klass);
 288
 289     k->event = aer915_event;
 290     k->recv = aer915_recv;
 291     k->send = aer915_send;
 292     dc->vmsd = &vmstate_aer915_state;
 293 }
 294
 295 static const TypeInfo aer915_info = {
 296     .name          = TYPE_AER915,
 297     .parent        = TYPE_I2C_SLAVE,
 298     .instance_size = sizeof(AER915State),
 299     .class_init    = aer915_class_init,
 300 };
 301
 302 #define FLASH_SECTOR_SIZE   (64 * KiB)
 303
 304 static void z2_init(MachineState *machine)
 305 {
 306     PXA2xxState *mpu;
 307     DriveInfo *dinfo;
 308     void *z2_lcd;
 309     I2CBus *bus;
 310     DeviceState *wm;
 311     I2CSlave *i2c_dev;
 312
 313     /* Setup CPU & memory */
 314     mpu = pxa270_init(z2_binfo.ram_size, machine->cpu_type);
 315
 316     dinfo = drive_get(IF_PFLASH, 0, 0);
 317     pflash_cfi01_register(Z2_FLASH_BASE, "z2.flash0", Z2_FLASH_SIZE,
 318                           dinfo ? blk_by_legacy_dinfo(dinfo) : NULL,
 319                           FLASH_SECTOR_SIZE, 4, 0, 0, 0, 0, 0);
 320
 321     /* setup keypad */
 322     pxa27x_register_keypad(mpu->kp, map, 0x100);
 323
 324     /* MMC/SD host */
 325     pxa2xx_mmci_handlers(mpu->mmc,
 326         NULL,
 327         qdev_get_gpio_in(mpu->gpio, Z2_GPIO_SD_DETECT));
 328
 329     type_register_static(&zipit_lcd_info);
 330     type_register_static(&aer915_info);
 331     z2_lcd = ssi_create_peripheral(mpu->ssp[1], TYPE_ZIPIT_LCD);
 332     bus = pxa2xx_i2c_bus(mpu->i2c[0]);
 333
 334     i2c_slave_create_simple(bus, TYPE_AER915, 0x55);
 335
 336     i2c_dev = i2c_slave_new(TYPE_WM8750, 0x1b);
 337     wm = DEVICE(i2c_dev);
 338
 339     if (machine->audiodev) {
 340         qdev_prop_set_string(wm, "audiodev", machine->audiodev);
 341     }
 342     i2c_slave_realize_and_unref(i2c_dev, bus, &error_abort);
 343
 344     mpu->i2s->opaque = wm;
 345     mpu->i2s->codec_out = wm8750_dac_dat;
 346     mpu->i2s->codec_in = wm8750_adc_dat;
 347     wm8750_data_req_set(wm, mpu->i2s->data_req, mpu->i2s);
 348
 349     qdev_connect_gpio_out(mpu->gpio, Z2_GPIO_LCD_CS,
 350                           qemu_allocate_irq(z2_lcd_cs, z2_lcd, 0));
 351
 352     z2_binfo.board_id = 0x6dd;
 353     arm_load_kernel(mpu->cpu, machine, &z2_binfo);
 354 }
 355
 356 static void z2_machine_init(MachineClass *mc)
 357 {
 358     mc->desc = "Zipit Z2 (PXA27x)";
 359     mc->init = z2_init;
 360     mc->ignore_memory_transaction_failures = true;
 361     mc->default_cpu_type = ARM_CPU_TYPE_NAME("pxa270-c5");
 362
 363     machine_add_audiodev_property(mc);
 364 }
 365
 366 DEFINE_MACHINE("z2", z2_machine_init)