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 "hw/hw.h"
  15 #include "hw/arm/pxa.h"
  16 #include "hw/arm/arm.h"
  17 #include "hw/devices.h"
  18 #include "hw/i2c/i2c.h"
  19 #include "hw/ssi.h"
  20 #include "hw/boards.h"
  21 #include "sysemu/sysemu.h"
  22 #include "hw/block/flash.h"
  23 #include "sysemu/blockdev.h"
  24 #include "ui/console.h"
  25 #include "audio/audio.h"
  26 #include "exec/address-spaces.h"
  27 #include "sysemu/qtest.h"
  28
  29 #ifdef DEBUG_Z2
  30 #define DPRINTF(fmt, ...) \
  31         printf(fmt, ## __VA_ARGS__)
  32 #else
  33 #define DPRINTF(fmt, ...)
  34 #endif
  35
  36 static const struct keymap map[0x100] = {
  37     [0 ... 0xff] = { -1, -1 },
  38     [0x3b] = {0, 0}, /* Option = F1 */
  39     [0xc8] = {0, 1}, /* Up */
  40     [0xd0] = {0, 2}, /* Down */
  41     [0xcb] = {0, 3}, /* Left */
  42     [0xcd] = {0, 4}, /* Right */
  43     [0xcf] = {0, 5}, /* End */
  44     [0x0d] = {0, 6}, /* KPPLUS */
  45     [0xc7] = {1, 0}, /* Home */
  46     [0x10] = {1, 1}, /* Q */
  47     [0x17] = {1, 2}, /* I */
  48     [0x22] = {1, 3}, /* G */
  49     [0x2d] = {1, 4}, /* X */
  50     [0x1c] = {1, 5}, /* Enter */
  51     [0x0c] = {1, 6}, /* KPMINUS */
  52     [0xc9] = {2, 0}, /* PageUp */
  53     [0x11] = {2, 1}, /* W */
  54     [0x18] = {2, 2}, /* O */
  55     [0x23] = {2, 3}, /* H */
  56     [0x2e] = {2, 4}, /* C */
  57     [0x38] = {2, 5}, /* LeftAlt */
  58     [0xd1] = {3, 0}, /* PageDown */
  59     [0x12] = {3, 1}, /* E */
  60     [0x19] = {3, 2}, /* P */
  61     [0x24] = {3, 3}, /* J */
  62     [0x2f] = {3, 4}, /* V */
  63     [0x2a] = {3, 5}, /* LeftShift */
  64     [0x01] = {4, 0}, /* Esc */
  65     [0x13] = {4, 1}, /* R */
  66     [0x1e] = {4, 2}, /* A */
  67     [0x25] = {4, 3}, /* K */
  68     [0x30] = {4, 4}, /* B */
  69     [0x1d] = {4, 5}, /* LeftCtrl */
  70     [0x0f] = {5, 0}, /* Tab */
  71     [0x14] = {5, 1}, /* T */
  72     [0x1f] = {5, 2}, /* S */
  73     [0x26] = {5, 3}, /* L */
  74     [0x31] = {5, 4}, /* N */
  75     [0x39] = {5, 5}, /* Space */
  76     [0x3c] = {6, 0}, /* Stop = F2 */
  77     [0x15] = {6, 1}, /* Y */
  78     [0x20] = {6, 2}, /* D */
  79     [0x0e] = {6, 3}, /* Backspace */
  80     [0x32] = {6, 4}, /* M */
  81     [0x33] = {6, 5}, /* Comma */
  82     [0x3d] = {7, 0}, /* Play = F3 */
  83     [0x16] = {7, 1}, /* U */
  84     [0x21] = {7, 2}, /* F */
  85     [0x2c] = {7, 3}, /* Z */
  86     [0x27] = {7, 4}, /* Semicolon */
  87     [0x34] = {7, 5}, /* Dot */
  88 };
  89
  90 #define Z2_RAM_SIZE     0x02000000
  91 #define Z2_FLASH_BASE   0x00000000
  92 #define Z2_FLASH_SIZE   0x00800000
  93
  94 static struct arm_boot_info z2_binfo = {
  95     .loader_start   = PXA2XX_SDRAM_BASE,
  96     .ram_size       = Z2_RAM_SIZE,
  97 };
  98
  99 #define Z2_GPIO_SD_DETECT   96
 100 #define Z2_GPIO_AC_IN       0
 101 #define Z2_GPIO_KEY_ON      1
 102 #define Z2_GPIO_LCD_CS      88
 103
 104 typedef struct {
 105     SSISlave ssidev;
 106     int32_t selected;
 107     int32_t enabled;
 108     uint8_t buf[3];
 109     uint32_t cur_reg;
 110     int pos;
 111 } ZipitLCD;
 112
 113 static uint32_t zipit_lcd_transfer(SSISlave *dev, uint32_t value)
 114 {
 115     ZipitLCD *z = FROM_SSI_SLAVE(ZipitLCD, dev);
 116     uint16_t val;
 117     if (z->selected) {
 118         z->buf[z->pos] = value & 0xff;
 119         z->pos++;
 120     }
 121     if (z->pos == 3) {
 122         switch (z->buf[0]) {
 123         case 0x74:
 124             DPRINTF("%s: reg: 0x%.2x\n", __func__, z->buf[2]);
 125             z->cur_reg = z->buf[2];
 126             break;
 127         case 0x76:
 128             val = z->buf[1] << 8 | z->buf[2];
 129             DPRINTF("%s: value: 0x%.4x\n", __func__, val);
 130             if (z->cur_reg == 0x22 && val == 0x0000) {
 131                 z->enabled = 1;
 132                 printf("%s: LCD enabled\n", __func__);
 133             } else if (z->cur_reg == 0x10 && val == 0x0000) {
 134                 z->enabled = 0;
 135                 printf("%s: LCD disabled\n", __func__);
 136             }
 137             break;
 138         default:
 139             DPRINTF("%s: unknown command!\n", __func__);
 140             break;
 141         }
 142         z->pos = 0;
 143     }
 144     return 0;
 145 }
 146
 147 static void z2_lcd_cs(void *opaque, int line, int level)
 148 {
 149     ZipitLCD *z2_lcd = opaque;
 150     z2_lcd->selected = !level;
 151 }
 152
 153 static int zipit_lcd_init(SSISlave *dev)
 154 {
 155     ZipitLCD *z = FROM_SSI_SLAVE(ZipitLCD, dev);
 156     z->selected = 0;
 157     z->enabled = 0;
 158     z->pos = 0;
 159
 160     return 0;
 161 }
 162
 163 static VMStateDescription vmstate_zipit_lcd_state = {
 164     .name = "zipit-lcd",
 165     .version_id = 2,
 166     .minimum_version_id = 2,
 167     .minimum_version_id_old = 2,
 168     .fields = (VMStateField[]) {
 169         VMSTATE_SSI_SLAVE(ssidev, ZipitLCD),
 170         VMSTATE_INT32(selected, ZipitLCD),
 171         VMSTATE_INT32(enabled, ZipitLCD),
 172         VMSTATE_BUFFER(buf, ZipitLCD),
 173         VMSTATE_UINT32(cur_reg, ZipitLCD),
 174         VMSTATE_INT32(pos, ZipitLCD),
 175         VMSTATE_END_OF_LIST(),
 176     }
 177 };
 178
 179 static void zipit_lcd_class_init(ObjectClass *klass, void *data)
 180 {
 181     DeviceClass *dc = DEVICE_CLASS(klass);
 182     SSISlaveClass *k = SSI_SLAVE_CLASS(klass);
 183
 184     k->init = zipit_lcd_init;
 185     k->transfer = zipit_lcd_transfer;
 186     dc->vmsd = &vmstate_zipit_lcd_state;
 187 }
 188
 189 static const TypeInfo zipit_lcd_info = {
 190     .name          = "zipit-lcd",
 191     .parent        = TYPE_SSI_SLAVE,
 192     .instance_size = sizeof(ZipitLCD),
 193     .class_init    = zipit_lcd_class_init,
 194 };
 195
 196 #define TYPE_AER915 "aer915"
 197 #define AER915(obj) OBJECT_CHECK(AER915State, (obj), TYPE_AER915)
 198
 199 typedef struct AER915State {
 200     I2CSlave parent_obj;
 201
 202     int len;
 203     uint8_t buf[3];
 204 } AER915State;
 205
 206 static int aer915_send(I2CSlave *i2c, uint8_t data)
 207 {
 208     AER915State *s = AER915(i2c);
 209
 210     s->buf[s->len] = data;
 211     if (s->len++ > 2) {
 212         DPRINTF("%s: message too long (%i bytes)\n",
 213             __func__, s->len);
 214         return 1;
 215     }
 216
 217     if (s->len == 2) {
 218         DPRINTF("%s: reg %d value 0x%02x\n", __func__,
 219                 s->buf[0], s->buf[1]);
 220     }
 221
 222     return 0;
 223 }
 224
 225 static void aer915_event(I2CSlave *i2c, enum i2c_event event)
 226 {
 227     AER915State *s = AER915(i2c);
 228
 229     switch (event) {
 230     case I2C_START_SEND:
 231         s->len = 0;
 232         break;
 233     case I2C_START_RECV:
 234         if (s->len != 1) {
 235             DPRINTF("%s: short message!?\n", __func__);
 236         }
 237         break;
 238     case I2C_FINISH:
 239         break;
 240     default:
 241         break;
 242     }
 243 }
 244
 245 static int aer915_recv(I2CSlave *slave)
 246 {
 247     AER915State *s = AER915(slave);
 248     int retval = 0x00;
 249
 250     switch (s->buf[0]) {
 251     /* Return hardcoded battery voltage,
 252      * 0xf0 means ~4.1V
 253      */
 254     case 0x02:
 255         retval = 0xf0;
 256         break;
 257     /* Return 0x00 for other regs,
 258      * we don't know what they are for,
 259      * anyway they return 0x00 on real hardware.
 260      */
 261     default:
 262         break;
 263     }
 264
 265     return retval;
 266 }
 267
 268 static int aer915_init(I2CSlave *i2c)
 269 {
 270     /* Nothing to do.  */
 271     return 0;
 272 }
 273
 274 static VMStateDescription vmstate_aer915_state = {
 275     .name = "aer915",
 276     .version_id = 1,
 277     .minimum_version_id = 1,
 278     .minimum_version_id_old = 1,
 279     .fields = (VMStateField[]) {
 280         VMSTATE_INT32(len, AER915State),
 281         VMSTATE_BUFFER(buf, AER915State),
 282         VMSTATE_END_OF_LIST(),
 283     }
 284 };
 285
 286 static void aer915_class_init(ObjectClass *klass, void *data)
 287 {
 288     DeviceClass *dc = DEVICE_CLASS(klass);
 289     I2CSlaveClass *k = I2C_SLAVE_CLASS(klass);
 290
 291     k->init = aer915_init;
 292     k->event = aer915_event;
 293     k->recv = aer915_recv;
 294     k->send = aer915_send;
 295     dc->vmsd = &vmstate_aer915_state;
 296 }
 297
 298 static const TypeInfo aer915_info = {
 299     .name          = TYPE_AER915,
 300     .parent        = TYPE_I2C_SLAVE,
 301     .instance_size = sizeof(AER915State),
 302     .class_init    = aer915_class_init,
 303 };
 304
 305 static void z2_init(QEMUMachineInitArgs *args)
 306 {
 307     const char *cpu_model = args->cpu_model;
 308     const char *kernel_filename = args->kernel_filename;
 309     const char *kernel_cmdline = args->kernel_cmdline;
 310     const char *initrd_filename = args->initrd_filename;
 311     MemoryRegion *address_space_mem = get_system_memory();
 312     uint32_t sector_len = 0x10000;
 313     PXA2xxState *mpu;
 314     DriveInfo *dinfo;
 315     int be;
 316     void *z2_lcd;
 317     I2CBus *bus;
 318     DeviceState *wm;
 319
 320     if (!cpu_model) {
 321         cpu_model = "pxa270-c5";
 322     }
 323
 324     /* Setup CPU & memory */
 325     mpu = pxa270_init(address_space_mem, z2_binfo.ram_size, cpu_model);
 326
 327 #ifdef TARGET_WORDS_BIGENDIAN
 328     be = 1;
 329 #else
 330     be = 0;
 331 #endif
 332     dinfo = drive_get(IF_PFLASH, 0, 0);
 333     if (!dinfo && !qtest_enabled()) {
 334         fprintf(stderr, "Flash image must be given with the "
 335                 "'pflash' parameter\n");
 336         exit(1);
 337     }
 338
 339     if (!pflash_cfi01_register(Z2_FLASH_BASE,
 340                                NULL, "z2.flash0", Z2_FLASH_SIZE,
 341                                dinfo ? dinfo->bdrv : NULL, sector_len,
 342                                Z2_FLASH_SIZE / sector_len, 4, 0, 0, 0, 0,
 343                                be)) {
 344         fprintf(stderr, "qemu: Error registering flash memory.\n");
 345         exit(1);
 346     }
 347
 348     /* setup keypad */
 349     pxa27x_register_keypad(mpu->kp, map, 0x100);
 350
 351     /* MMC/SD host */
 352     pxa2xx_mmci_handlers(mpu->mmc,
 353         NULL,
 354         qdev_get_gpio_in(mpu->gpio, Z2_GPIO_SD_DETECT));
 355
 356     type_register_static(&zipit_lcd_info);
 357     type_register_static(&aer915_info);
 358     z2_lcd = ssi_create_slave(mpu->ssp[1], "zipit-lcd");
 359     bus = pxa2xx_i2c_bus(mpu->i2c[0]);
 360     i2c_create_slave(bus, TYPE_AER915, 0x55);
 361     wm = i2c_create_slave(bus, "wm8750", 0x1b);
 362     mpu->i2s->opaque = wm;
 363     mpu->i2s->codec_out = wm8750_dac_dat;
 364     mpu->i2s->codec_in = wm8750_adc_dat;
 365     wm8750_data_req_set(wm, mpu->i2s->data_req, mpu->i2s);
 366
 367     qdev_connect_gpio_out(mpu->gpio, Z2_GPIO_LCD_CS,
 368         qemu_allocate_irqs(z2_lcd_cs, z2_lcd, 1)[0]);
 369
 370     z2_binfo.kernel_filename = kernel_filename;
 371     z2_binfo.kernel_cmdline = kernel_cmdline;
 372     z2_binfo.initrd_filename = initrd_filename;
 373     z2_binfo.board_id = 0x6dd;
 374     arm_load_kernel(mpu->cpu, &z2_binfo);
 375 }
 376
 377 static QEMUMachine z2_machine = {
 378     .name = "z2",
 379     .desc = "Zipit Z2 (PXA27x)",
 380     .init = z2_init,
 381 };
 382
 383 static void z2_machine_init(void)
 384 {
 385     qemu_register_machine(&z2_machine);
 386 }
 387
 388 machine_init(z2_machine_init);