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 "qom/object.h"
  29 #include "qapi/error.h"
  30 #include "trace.h"
  31
  32 static const struct keymap map[0x100] = {
  33     [0 ... 0xff] = { -1, -1 },
  34     [0x3b] = {0, 0}, /* Option = F1 */
  35     [0xc8] = {0, 1}, /* Up */
  36     [0xd0] = {0, 2}, /* Down */
  37     [0xcb] = {0, 3}, /* Left */
  38     [0xcd] = {0, 4}, /* Right */
  39     [0xcf] = {0, 5}, /* End */
  40     [0x0d] = {0, 6}, /* KPPLUS */
  41     [0xc7] = {1, 0}, /* Home */
  42     [0x10] = {1, 1}, /* Q */
  43     [0x17] = {1, 2}, /* I */
  44     [0x22] = {1, 3}, /* G */
  45     [0x2d] = {1, 4}, /* X */
  46     [0x1c] = {1, 5}, /* Enter */
  47     [0x0c] = {1, 6}, /* KPMINUS */
  48     [0xc9] = {2, 0}, /* PageUp */
  49     [0x11] = {2, 1}, /* W */
  50     [0x18] = {2, 2}, /* O */
  51     [0x23] = {2, 3}, /* H */
  52     [0x2e] = {2, 4}, /* C */
  53     [0x38] = {2, 5}, /* LeftAlt */
  54     [0xd1] = {3, 0}, /* PageDown */
  55     [0x12] = {3, 1}, /* E */
  56     [0x19] = {3, 2}, /* P */
  57     [0x24] = {3, 3}, /* J */
  58     [0x2f] = {3, 4}, /* V */
  59     [0x2a] = {3, 5}, /* LeftShift */
  60     [0x01] = {4, 0}, /* Esc */
  61     [0x13] = {4, 1}, /* R */
  62     [0x1e] = {4, 2}, /* A */
  63     [0x25] = {4, 3}, /* K */
  64     [0x30] = {4, 4}, /* B */
  65     [0x1d] = {4, 5}, /* LeftCtrl */
  66     [0x0f] = {5, 0}, /* Tab */
  67     [0x14] = {5, 1}, /* T */
  68     [0x1f] = {5, 2}, /* S */
  69     [0x26] = {5, 3}, /* L */
  70     [0x31] = {5, 4}, /* N */
  71     [0x39] = {5, 5}, /* Space */
  72     [0x3c] = {6, 0}, /* Stop = F2 */
  73     [0x15] = {6, 1}, /* Y */
  74     [0x20] = {6, 2}, /* D */
  75     [0x0e] = {6, 3}, /* Backspace */
  76     [0x32] = {6, 4}, /* M */
  77     [0x33] = {6, 5}, /* Comma */
  78     [0x3d] = {7, 0}, /* Play = F3 */
  79     [0x16] = {7, 1}, /* U */
  80     [0x21] = {7, 2}, /* F */
  81     [0x2c] = {7, 3}, /* Z */
  82     [0x27] = {7, 4}, /* Semicolon */
  83     [0x34] = {7, 5}, /* Dot */
  84 };
  85
  86 #define Z2_RAM_SIZE     0x02000000
  87 #define Z2_FLASH_BASE   0x00000000
  88 #define Z2_FLASH_SIZE   0x00800000
  89
  90 static struct arm_boot_info z2_binfo = {
  91     .loader_start   = PXA2XX_SDRAM_BASE,
  92     .ram_size       = Z2_RAM_SIZE,
  93 };
  94
  95 #define Z2_GPIO_SD_DETECT   96
  96 #define Z2_GPIO_AC_IN       0
  97 #define Z2_GPIO_KEY_ON      1
  98 #define Z2_GPIO_LCD_CS      88
  99
 100 struct ZipitLCD {
 101     SSIPeripheral ssidev;
 102     int32_t selected;
 103     int32_t enabled;
 104     uint8_t buf[3];
 105     uint32_t cur_reg;
 106     int pos;
 107 };
 108
 109 #define TYPE_ZIPIT_LCD "zipit-lcd"
 110 OBJECT_DECLARE_SIMPLE_TYPE(ZipitLCD, ZIPIT_LCD)
 111
 112 static uint32_t zipit_lcd_transfer(SSIPeripheral *dev, uint32_t value)
 113 {
 114     ZipitLCD *z = ZIPIT_LCD(dev);
 115     uint16_t val;
 116
 117     trace_z2_lcd_reg_update(z->cur_reg, z->buf[0], z->buf[1], z->buf[2], value);
 118     if (z->selected) {
 119         z->buf[z->pos] = value & 0xff;
 120         z->pos++;
 121     }
 122     if (z->pos == 3) {
 123         switch (z->buf[0]) {
 124         case 0x74:
 125             z->cur_reg = z->buf[2];
 126             break;
 127         case 0x76:
 128             val = z->buf[1] << 8 | z->buf[2];
 129             if (z->cur_reg == 0x22 && val == 0x0000) {
 130                 z->enabled = 1;
 131                 trace_z2_lcd_enable_disable_result("enabled");
 132             } else if (z->cur_reg == 0x10 && val == 0x0000) {
 133                 z->enabled = 0;
 134                 trace_z2_lcd_enable_disable_result("disabled");
 135             }
 136             break;
 137         default:
 138             break;
 139         }
 140         z->pos = 0;
 141     }
 142     return 0;
 143 }
 144
 145 static void z2_lcd_cs(void *opaque, int line, int level)
 146 {
 147     ZipitLCD *z2_lcd = opaque;
 148     z2_lcd->selected = !level;
 149 }
 150
 151 static void zipit_lcd_realize(SSIPeripheral *dev, Error **errp)
 152 {
 153     ZipitLCD *z = ZIPIT_LCD(dev);
 154     z->selected = 0;
 155     z->enabled = 0;
 156     z->pos = 0;
 157 }
 158
 159 static const VMStateDescription vmstate_zipit_lcd_state = {
 160     .name = "zipit-lcd",
 161     .version_id = 2,
 162     .minimum_version_id = 2,
 163     .fields = (const VMStateField[]) {
 164         VMSTATE_SSI_PERIPHERAL(ssidev, ZipitLCD),
 165         VMSTATE_INT32(selected, ZipitLCD),
 166         VMSTATE_INT32(enabled, ZipitLCD),
 167         VMSTATE_BUFFER(buf, ZipitLCD),
 168         VMSTATE_UINT32(cur_reg, ZipitLCD),
 169         VMSTATE_INT32(pos, ZipitLCD),
 170         VMSTATE_END_OF_LIST(),
 171     }
 172 };
 173
 174 static void zipit_lcd_class_init(ObjectClass *klass, void *data)
 175 {
 176     DeviceClass *dc = DEVICE_CLASS(klass);
 177     SSIPeripheralClass *k = SSI_PERIPHERAL_CLASS(klass);
 178
 179     k->realize = zipit_lcd_realize;
 180     k->transfer = zipit_lcd_transfer;
 181     dc->vmsd = &vmstate_zipit_lcd_state;
 182 }
 183
 184 static const TypeInfo zipit_lcd_info = {
 185     .name          = TYPE_ZIPIT_LCD,
 186     .parent        = TYPE_SSI_PERIPHERAL,
 187     .instance_size = sizeof(ZipitLCD),
 188     .class_init    = zipit_lcd_class_init,
 189 };
 190
 191 #define TYPE_AER915 "aer915"
 192 OBJECT_DECLARE_SIMPLE_TYPE(AER915State, AER915)
 193
 194 struct AER915State {
 195     I2CSlave parent_obj;
 196
 197     int len;
 198     uint8_t buf[3];
 199 };
 200
 201 static int aer915_send(I2CSlave *i2c, uint8_t data)
 202 {
 203     AER915State *s = AER915(i2c);
 204
 205     s->buf[s->len] = data;
 206     if (s->len++ > 2) {
 207         trace_z2_aer915_send_too_long(s->len);
 208         return 1;
 209     }
 210
 211     if (s->len == 2) {
 212         trace_z2_aer915_send(s->buf[0], s->buf[1]);
 213     }
 214
 215     return 0;
 216 }
 217
 218 static int aer915_event(I2CSlave *i2c, enum i2c_event event)
 219 {
 220     AER915State *s = AER915(i2c);
 221
 222     trace_z2_aer915_event(s->len, event);
 223     switch (event) {
 224     case I2C_START_SEND:
 225         s->len = 0;
 226         break;
 227     case I2C_START_RECV:
 228         break;
 229     case I2C_FINISH:
 230         break;
 231     default:
 232         break;
 233     }
 234
 235     return 0;
 236 }
 237
 238 static uint8_t aer915_recv(I2CSlave *slave)
 239 {
 240     AER915State *s = AER915(slave);
 241     int retval = 0x00;
 242
 243     switch (s->buf[0]) {
 244     /* Return hardcoded battery voltage,
 245      * 0xf0 means ~4.1V
 246      */
 247     case 0x02:
 248         retval = 0xf0;
 249         break;
 250     /* Return 0x00 for other regs,
 251      * we don't know what they are for,
 252      * anyway they return 0x00 on real hardware.
 253      */
 254     default:
 255         break;
 256     }
 257
 258     return retval;
 259 }
 260
 261 static const VMStateDescription vmstate_aer915_state = {
 262     .name = "aer915",
 263     .version_id = 1,
 264     .minimum_version_id = 1,
 265     .fields = (const VMStateField[]) {
 266         VMSTATE_INT32(len, AER915State),
 267         VMSTATE_BUFFER(buf, AER915State),
 268         VMSTATE_END_OF_LIST(),
 269     }
 270 };
 271
 272 static void aer915_class_init(ObjectClass *klass, void *data)
 273 {
 274     DeviceClass *dc = DEVICE_CLASS(klass);
 275     I2CSlaveClass *k = I2C_SLAVE_CLASS(klass);
 276
 277     k->event = aer915_event;
 278     k->recv = aer915_recv;
 279     k->send = aer915_send;
 280     dc->vmsd = &vmstate_aer915_state;
 281 }
 282
 283 static const TypeInfo aer915_info = {
 284     .name          = TYPE_AER915,
 285     .parent        = TYPE_I2C_SLAVE,
 286     .instance_size = sizeof(AER915State),
 287     .class_init    = aer915_class_init,
 288 };
 289
 290 #define FLASH_SECTOR_SIZE   (64 * KiB)
 291
 292 static void z2_init(MachineState *machine)
 293 {
 294     PXA2xxState *mpu;
 295     DriveInfo *dinfo;
 296     void *z2_lcd;
 297     I2CBus *bus;
 298     DeviceState *wm;
 299     I2CSlave *i2c_dev;
 300
 301     /* Setup CPU & memory */
 302     mpu = pxa270_init(z2_binfo.ram_size, machine->cpu_type);
 303
 304     dinfo = drive_get(IF_PFLASH, 0, 0);
 305     pflash_cfi01_register(Z2_FLASH_BASE, "z2.flash0", Z2_FLASH_SIZE,
 306                           dinfo ? blk_by_legacy_dinfo(dinfo) : NULL,
 307                           FLASH_SECTOR_SIZE, 4, 0, 0, 0, 0, 0);
 308
 309     /* setup keypad */
 310     pxa27x_register_keypad(mpu->kp, map, 0x100);
 311
 312     /* MMC/SD host */
 313     pxa2xx_mmci_handlers(mpu->mmc,
 314         NULL,
 315         qdev_get_gpio_in(mpu->gpio, Z2_GPIO_SD_DETECT));
 316
 317     type_register_static(&zipit_lcd_info);
 318     type_register_static(&aer915_info);
 319     z2_lcd = ssi_create_peripheral(mpu->ssp[1], TYPE_ZIPIT_LCD);
 320     bus = pxa2xx_i2c_bus(mpu->i2c[0]);
 321
 322     i2c_slave_create_simple(bus, TYPE_AER915, 0x55);
 323
 324     i2c_dev = i2c_slave_new(TYPE_WM8750, 0x1b);
 325     wm = DEVICE(i2c_dev);
 326
 327     if (machine->audiodev) {
 328         qdev_prop_set_string(wm, "audiodev", machine->audiodev);
 329     }
 330     i2c_slave_realize_and_unref(i2c_dev, bus, &error_abort);
 331
 332     mpu->i2s->opaque = wm;
 333     mpu->i2s->codec_out = wm8750_dac_dat;
 334     mpu->i2s->codec_in = wm8750_adc_dat;
 335     wm8750_data_req_set(wm, mpu->i2s->data_req, mpu->i2s);
 336
 337     qdev_connect_gpio_out(mpu->gpio, Z2_GPIO_LCD_CS,
 338                           qemu_allocate_irq(z2_lcd_cs, z2_lcd, 0));
 339
 340     z2_binfo.board_id = 0x6dd;
 341     arm_load_kernel(mpu->cpu, machine, &z2_binfo);
 342 }
 343
 344 static void z2_machine_init(MachineClass *mc)
 345 {
 346     mc->desc = "Zipit Z2 (PXA27x)";
 347     mc->init = z2_init;
 348     mc->ignore_memory_transaction_failures = true;
 349     mc->default_cpu_type = ARM_CPU_TYPE_NAME("pxa270-c5");
 350     mc->deprecation_reason = "machine is old and unmaintained";
 351
 352     machine_add_audiodev_property(mc);
 353 }
 354
 355 DEFINE_MACHINE("z2", z2_machine_init)