hw/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.h"
  15 #include "pxa.h"
  16 #include "arm-misc.h"
  17 #include "devices.h"
  18 #include "i2c.h"
  19 #include "ssi.h"
  20 #include "boards.h"
  21 #include "sysemu.h"
  22 #include "flash.h"
  23 #include "blockdev.h"
  24 #include "console.h"
  25 #include "audio/audio.h"
  26 #include "exec-memory.h"
  27
  28 #ifdef DEBUG_Z2
  29 #define DPRINTF(fmt, ...) \
  30         printf(fmt, ## __VA_ARGS__)
  31 #else
  32 #define DPRINTF(fmt, ...)
  33 #endif
  34
  35 static struct keymap map[0x100] = {
  36     [0 ... 0xff] = { -1, -1 },
  37     [0x3b] = {0, 0}, /* Option = F1 */
  38     [0xc8] = {0, 1}, /* Up */
  39     [0xd0] = {0, 2}, /* Down */
  40     [0xcb] = {0, 3}, /* Left */
  41     [0xcd] = {0, 4}, /* Right */
  42     [0xcf] = {0, 5}, /* End */
  43     [0x0d] = {0, 6}, /* KPPLUS */
  44     [0xc7] = {1, 0}, /* Home */
  45     [0x10] = {1, 1}, /* Q */
  46     [0x17] = {1, 2}, /* I */
  47     [0x22] = {1, 3}, /* G */
  48     [0x2d] = {1, 4}, /* X */
  49     [0x1c] = {1, 5}, /* Enter */
  50     [0x0c] = {1, 6}, /* KPMINUS */
  51     [0xc9] = {2, 0}, /* PageUp */
  52     [0x11] = {2, 1}, /* W */
  53     [0x18] = {2, 2}, /* O */
  54     [0x23] = {2, 3}, /* H */
  55     [0x2e] = {2, 4}, /* C */
  56     [0x38] = {2, 5}, /* LeftAlt */
  57     [0xd1] = {3, 0}, /* PageDown */
  58     [0x12] = {3, 1}, /* E */
  59     [0x19] = {3, 2}, /* P */
  60     [0x24] = {3, 3}, /* J */
  61     [0x2f] = {3, 4}, /* V */
  62     [0x2a] = {3, 5}, /* LeftShift */
  63     [0x01] = {4, 0}, /* Esc */
  64     [0x13] = {4, 1}, /* R */
  65     [0x1e] = {4, 2}, /* A */
  66     [0x25] = {4, 3}, /* K */
  67     [0x30] = {4, 4}, /* B */
  68     [0x1d] = {4, 5}, /* LeftCtrl */
  69     [0x0f] = {5, 0}, /* Tab */
  70     [0x14] = {5, 1}, /* T */
  71     [0x1f] = {5, 2}, /* S */
  72     [0x26] = {5, 3}, /* L */
  73     [0x31] = {5, 4}, /* N */
  74     [0x39] = {5, 5}, /* Space */
  75     [0x3c] = {6, 0}, /* Stop = F2 */
  76     [0x15] = {6, 1}, /* Y */
  77     [0x20] = {6, 2}, /* D */
  78     [0x0e] = {6, 3}, /* Backspace */
  79     [0x32] = {6, 4}, /* M */
  80     [0x33] = {6, 5}, /* Comma */
  81     [0x3d] = {7, 0}, /* Play = F3 */
  82     [0x16] = {7, 1}, /* U */
  83     [0x21] = {7, 2}, /* F */
  84     [0x2c] = {7, 3}, /* Z */
  85     [0x27] = {7, 4}, /* Semicolon */
  86     [0x34] = {7, 5}, /* Dot */
  87 };
  88
  89 #define Z2_RAM_SIZE     0x02000000
  90 #define Z2_FLASH_BASE   0x00000000
  91 #define Z2_FLASH_SIZE   0x00800000
  92
  93 static struct arm_boot_info z2_binfo = {
  94     .loader_start   = PXA2XX_SDRAM_BASE,
  95     .ram_size       = Z2_RAM_SIZE,
  96 };
  97
  98 #define Z2_GPIO_SD_DETECT   96
  99 #define Z2_GPIO_AC_IN       0
 100 #define Z2_GPIO_KEY_ON      1
 101 #define Z2_GPIO_LCD_CS      88
 102
 103 typedef struct {
 104     SSISlave ssidev;
 105     int32_t selected;
 106     int32_t enabled;
 107     uint8_t buf[3];
 108     uint32_t cur_reg;
 109     int pos;
 110 } ZipitLCD;
 111
 112 static uint32_t zipit_lcd_transfer(SSISlave *dev, uint32_t value)
 113 {
 114     ZipitLCD *z = FROM_SSI_SLAVE(ZipitLCD, dev);
 115     uint16_t val;
 116     if (z->selected) {
 117         z->buf[z->pos] = value & 0xff;
 118         z->pos++;
 119     }
 120     if (z->pos == 3) {
 121         switch (z->buf[0]) {
 122         case 0x74:
 123             DPRINTF("%s: reg: 0x%.2x\n", __func__, z->buf[2]);
 124             z->cur_reg = z->buf[2];
 125             break;
 126         case 0x76:
 127             val = z->buf[1] << 8 | z->buf[2];
 128             DPRINTF("%s: value: 0x%.4x\n", __func__, val);
 129             if (z->cur_reg == 0x22 && val == 0x0000) {
 130                 z->enabled = 1;
 131                 printf("%s: LCD enabled\n", __func__);
 132             } else if (z->cur_reg == 0x10 && val == 0x0000) {
 133                 z->enabled = 0;
 134                 printf("%s: LCD disabled\n", __func__);
 135             }
 136             break;
 137         default:
 138             DPRINTF("%s: unknown command!\n", __func__);
 139             break;
 140         }
 141         z->pos = 0;
 142     }
 143     return 0;
 144 }
 145
 146 static void z2_lcd_cs(void *opaque, int line, int level)
 147 {
 148     ZipitLCD *z2_lcd = opaque;
 149     z2_lcd->selected = !level;
 150 }
 151
 152 static int zipit_lcd_init(SSISlave *dev)
 153 {
 154     ZipitLCD *z = FROM_SSI_SLAVE(ZipitLCD, dev);
 155     z->selected = 0;
 156     z->enabled = 0;
 157     z->pos = 0;
 158
 159     return 0;
 160 }
 161
 162 static VMStateDescription vmstate_zipit_lcd_state = {
 163     .name = "zipit-lcd",
 164     .version_id = 1,
 165     .minimum_version_id = 1,
 166     .minimum_version_id_old = 1,
 167     .fields = (VMStateField[]) {
 168         VMSTATE_INT32(selected, ZipitLCD),
 169         VMSTATE_INT32(enabled, ZipitLCD),
 170         VMSTATE_BUFFER(buf, ZipitLCD),
 171         VMSTATE_UINT32(cur_reg, ZipitLCD),
 172         VMSTATE_INT32(pos, ZipitLCD),
 173         VMSTATE_END_OF_LIST(),
 174     }
 175 };
 176
 177 static void zipit_lcd_class_init(ObjectClass *klass, void *data)
 178 {
 179     DeviceClass *dc = DEVICE_CLASS(klass);
 180     SSISlaveClass *k = SSI_SLAVE_CLASS(klass);
 181
 182     k->init = zipit_lcd_init;
 183     k->transfer = zipit_lcd_transfer;
 184     dc->vmsd = &vmstate_zipit_lcd_state;
 185 }
 186
 187 static TypeInfo zipit_lcd_info = {
 188     .name          = "zipit-lcd",
 189     .parent        = TYPE_SSI_SLAVE,
 190     .instance_size = sizeof(ZipitLCD),
 191     .class_init    = zipit_lcd_class_init,
 192 };
 193
 194 typedef struct {
 195     I2CSlave i2c;
 196     int len;
 197     uint8_t buf[3];
 198 } AER915State;
 199
 200 static int aer915_send(I2CSlave *i2c, uint8_t data)
 201 {
 202     AER915State *s = FROM_I2C_SLAVE(AER915State, i2c);
 203     s->buf[s->len] = data;
 204     if (s->len++ > 2) {
 205         DPRINTF("%s: message too long (%i bytes)\n",
 206             __func__, s->len);
 207         return 1;
 208     }
 209
 210     if (s->len == 2) {
 211         DPRINTF("%s: reg %d value 0x%02x\n", __func__,
 212                 s->buf[0], s->buf[1]);
 213     }
 214
 215     return 0;
 216 }
 217
 218 static void aer915_event(I2CSlave *i2c, enum i2c_event event)
 219 {
 220     AER915State *s = FROM_I2C_SLAVE(AER915State, i2c);
 221     switch (event) {
 222     case I2C_START_SEND:
 223         s->len = 0;
 224         break;
 225     case I2C_START_RECV:
 226         if (s->len != 1) {
 227             DPRINTF("%s: short message!?\n", __func__);
 228         }
 229         break;
 230     case I2C_FINISH:
 231         break;
 232     default:
 233         break;
 234     }
 235 }
 236
 237 static int aer915_recv(I2CSlave *slave)
 238 {
 239     int retval = 0x00;
 240     AER915State *s = FROM_I2C_SLAVE(AER915State, slave);
 241
 242     switch (s->buf[0]) {
 243     /* Return hardcoded battery voltage,
 244      * 0xf0 means ~4.1V
 245      */
 246     case 0x02:
 247         retval = 0xf0;
 248         break;
 249     /* Return 0x00 for other regs,
 250      * we don't know what they are for,
 251      * anyway they return 0x00 on real hardware.
 252      */
 253     default:
 254         break;
 255     }
 256
 257     return retval;
 258 }
 259
 260 static int aer915_init(I2CSlave *i2c)
 261 {
 262     /* Nothing to do.  */
 263     return 0;
 264 }
 265
 266 static VMStateDescription vmstate_aer915_state = {
 267     .name = "aer915",
 268     .version_id = 1,
 269     .minimum_version_id = 1,
 270     .minimum_version_id_old = 1,
 271     .fields = (VMStateField[]) {
 272         VMSTATE_INT32(len, AER915State),
 273         VMSTATE_BUFFER(buf, AER915State),
 274         VMSTATE_END_OF_LIST(),
 275     }
 276 };
 277
 278 static void aer915_class_init(ObjectClass *klass, void *data)
 279 {
 280     DeviceClass *dc = DEVICE_CLASS(klass);
 281     I2CSlaveClass *k = I2C_SLAVE_CLASS(klass);
 282
 283     k->init = aer915_init;
 284     k->event = aer915_event;
 285     k->recv = aer915_recv;
 286     k->send = aer915_send;
 287     dc->vmsd = &vmstate_aer915_state;
 288 }
 289
 290 static TypeInfo aer915_info = {
 291     .name          = "aer915",
 292     .parent        = TYPE_I2C_SLAVE,
 293     .instance_size = sizeof(AER915State),
 294     .class_init    = aer915_class_init,
 295 };
 296
 297 static void z2_init(ram_addr_t ram_size,
 298                 const char *boot_device,
 299                 const char *kernel_filename, const char *kernel_cmdline,
 300                 const char *initrd_filename, const char *cpu_model)
 301 {
 302     MemoryRegion *address_space_mem = get_system_memory();
 303     uint32_t sector_len = 0x10000;
 304     PXA2xxState *mpu;
 305     DriveInfo *dinfo;
 306     int be;
 307     void *z2_lcd;
 308     i2c_bus *bus;
 309     DeviceState *wm;
 310
 311     if (!cpu_model) {
 312         cpu_model = "pxa270-c5";
 313     }
 314
 315     /* Setup CPU & memory */
 316     mpu = pxa270_init(address_space_mem, z2_binfo.ram_size, cpu_model);
 317
 318 #ifdef TARGET_WORDS_BIGENDIAN
 319     be = 1;
 320 #else
 321     be = 0;
 322 #endif
 323     dinfo = drive_get(IF_PFLASH, 0, 0);
 324     if (!dinfo) {
 325         fprintf(stderr, "Flash image must be given with the "
 326                 "'pflash' parameter\n");
 327         exit(1);
 328     }
 329
 330     if (!pflash_cfi01_register(Z2_FLASH_BASE,
 331                                NULL, "z2.flash0", Z2_FLASH_SIZE,
 332                                dinfo->bdrv, sector_len,
 333                                Z2_FLASH_SIZE / sector_len, 4, 0, 0, 0, 0,
 334                                be)) {
 335         fprintf(stderr, "qemu: Error registering flash memory.\n");
 336         exit(1);
 337     }
 338
 339     /* setup keypad */
 340     pxa27x_register_keypad(mpu->kp, map, 0x100);
 341
 342     /* MMC/SD host */
 343     pxa2xx_mmci_handlers(mpu->mmc,
 344         NULL,
 345         qdev_get_gpio_in(mpu->gpio, Z2_GPIO_SD_DETECT));
 346
 347     type_register_static(&zipit_lcd_info);
 348     type_register_static(&aer915_info);
 349     z2_lcd = ssi_create_slave(mpu->ssp[1], "zipit-lcd");
 350     bus = pxa2xx_i2c_bus(mpu->i2c[0]);
 351     i2c_create_slave(bus, "aer915", 0x55);
 352     wm = i2c_create_slave(bus, "wm8750", 0x1b);
 353     mpu->i2s->opaque = wm;
 354     mpu->i2s->codec_out = wm8750_dac_dat;
 355     mpu->i2s->codec_in = wm8750_adc_dat;
 356     wm8750_data_req_set(wm, mpu->i2s->data_req, mpu->i2s);
 357
 358     qdev_connect_gpio_out(mpu->gpio, Z2_GPIO_LCD_CS,
 359         qemu_allocate_irqs(z2_lcd_cs, z2_lcd, 1)[0]);
 360
 361     if (kernel_filename) {
 362         z2_binfo.kernel_filename = kernel_filename;
 363         z2_binfo.kernel_cmdline = kernel_cmdline;
 364         z2_binfo.initrd_filename = initrd_filename;
 365         z2_binfo.board_id = 0x6dd;
 366         arm_load_kernel(mpu->cpu, &z2_binfo);
 367     }
 368 }
 369
 370 static QEMUMachine z2_machine = {
 371     .name = "z2",
 372     .desc = "Zipit Z2 (PXA27x)",
 373     .init = z2_init,
 374 };
 375
 376 static void z2_machine_init(void)
 377 {
 378     qemu_register_machine(&z2_machine);
 379 }
 380
 381 machine_init(z2_machine_init);