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 "hw/arm/pxa.h"
  16 #include "hw/arm/boot.h"
  17 #include "hw/i2c/i2c.h"
  18 #include "hw/irq.h"
  19 #include "hw/ssi/ssi.h"
  20 #include "migration/vmstate.h"
  21 #include "hw/boards.h"
  22 #include "hw/block/flash.h"
  23 #include "ui/console.h"
  24 #include "hw/audio/wm8750.h"
  25 #include "audio/audio.h"
  26 #include "exec/address-spaces.h"
  27 #include "cpu.h"
  28 #include "qom/object.h"
  29
  30 #ifdef DEBUG_Z2
  31 #define DPRINTF(fmt, ...) \
  32         printf(fmt, ## __VA_ARGS__)
  33 #else
  34 #define DPRINTF(fmt, ...)
  35 #endif
  36
  37 static const struct keymap map[0x100] = {
  38     [0 ... 0xff] = { -1, -1 },
  39     [0x3b] = {0, 0}, /* Option = F1 */
  40     [0xc8] = {0, 1}, /* Up */
  41     [0xd0] = {0, 2}, /* Down */
  42     [0xcb] = {0, 3}, /* Left */
  43     [0xcd] = {0, 4}, /* Right */
  44     [0xcf] = {0, 5}, /* End */
  45     [0x0d] = {0, 6}, /* KPPLUS */
  46     [0xc7] = {1, 0}, /* Home */
  47     [0x10] = {1, 1}, /* Q */
  48     [0x17] = {1, 2}, /* I */
  49     [0x22] = {1, 3}, /* G */
  50     [0x2d] = {1, 4}, /* X */
  51     [0x1c] = {1, 5}, /* Enter */
  52     [0x0c] = {1, 6}, /* KPMINUS */
  53     [0xc9] = {2, 0}, /* PageUp */
  54     [0x11] = {2, 1}, /* W */
  55     [0x18] = {2, 2}, /* O */
  56     [0x23] = {2, 3}, /* H */
  57     [0x2e] = {2, 4}, /* C */
  58     [0x38] = {2, 5}, /* LeftAlt */
  59     [0xd1] = {3, 0}, /* PageDown */
  60     [0x12] = {3, 1}, /* E */
  61     [0x19] = {3, 2}, /* P */
  62     [0x24] = {3, 3}, /* J */
  63     [0x2f] = {3, 4}, /* V */
  64     [0x2a] = {3, 5}, /* LeftShift */
  65     [0x01] = {4, 0}, /* Esc */
  66     [0x13] = {4, 1}, /* R */
  67     [0x1e] = {4, 2}, /* A */
  68     [0x25] = {4, 3}, /* K */
  69     [0x30] = {4, 4}, /* B */
  70     [0x1d] = {4, 5}, /* LeftCtrl */
  71     [0x0f] = {5, 0}, /* Tab */
  72     [0x14] = {5, 1}, /* T */
  73     [0x1f] = {5, 2}, /* S */
  74     [0x26] = {5, 3}, /* L */
  75     [0x31] = {5, 4}, /* N */
  76     [0x39] = {5, 5}, /* Space */
  77     [0x3c] = {6, 0}, /* Stop = F2 */
  78     [0x15] = {6, 1}, /* Y */
  79     [0x20] = {6, 2}, /* D */
  80     [0x0e] = {6, 3}, /* Backspace */
  81     [0x32] = {6, 4}, /* M */
  82     [0x33] = {6, 5}, /* Comma */
  83     [0x3d] = {7, 0}, /* Play = F3 */
  84     [0x16] = {7, 1}, /* U */
  85     [0x21] = {7, 2}, /* F */
  86     [0x2c] = {7, 3}, /* Z */
  87     [0x27] = {7, 4}, /* Semicolon */
  88     [0x34] = {7, 5}, /* Dot */
  89 };
  90
  91 #define Z2_RAM_SIZE     0x02000000
  92 #define Z2_FLASH_BASE   0x00000000
  93 #define Z2_FLASH_SIZE   0x00800000
  94
  95 static struct arm_boot_info z2_binfo = {
  96     .loader_start   = PXA2XX_SDRAM_BASE,
  97     .ram_size       = Z2_RAM_SIZE,
  98 };
  99
 100 #define Z2_GPIO_SD_DETECT   96
 101 #define Z2_GPIO_AC_IN       0
 102 #define Z2_GPIO_KEY_ON      1
 103 #define Z2_GPIO_LCD_CS      88
 104
 105 struct ZipitLCD {
 106     SSIPeripheral ssidev;
 107     int32_t selected;
 108     int32_t enabled;
 109     uint8_t buf[3];
 110     uint32_t cur_reg;
 111     int pos;
 112 };
 113
 114 #define TYPE_ZIPIT_LCD "zipit-lcd"
 115 OBJECT_DECLARE_SIMPLE_TYPE(ZipitLCD, ZIPIT_LCD)
 116
 117 static uint32_t zipit_lcd_transfer(SSIPeripheral *dev, uint32_t value)
 118 {
 119     ZipitLCD *z = ZIPIT_LCD(dev);
 120     uint16_t val;
 121     if (z->selected) {
 122         z->buf[z->pos] = value & 0xff;
 123         z->pos++;
 124     }
 125     if (z->pos == 3) {
 126         switch (z->buf[0]) {
 127         case 0x74:
 128             DPRINTF("%s: reg: 0x%.2x\n", __func__, z->buf[2]);
 129             z->cur_reg = z->buf[2];
 130             break;
 131         case 0x76:
 132             val = z->buf[1] << 8 | z->buf[2];
 133             DPRINTF("%s: value: 0x%.4x\n", __func__, val);
 134             if (z->cur_reg == 0x22 && val == 0x0000) {
 135                 z->enabled = 1;
 136                 printf("%s: LCD enabled\n", __func__);
 137             } else if (z->cur_reg == 0x10 && val == 0x0000) {
 138                 z->enabled = 0;
 139                 printf("%s: LCD disabled\n", __func__);
 140             }
 141             break;
 142         default:
 143             DPRINTF("%s: unknown command!\n", __func__);
 144             break;
 145         }
 146         z->pos = 0;
 147     }
 148     return 0;
 149 }
 150
 151 static void z2_lcd_cs(void *opaque, int line, int level)
 152 {
 153     ZipitLCD *z2_lcd = opaque;
 154     z2_lcd->selected = !level;
 155 }
 156
 157 static void zipit_lcd_realize(SSIPeripheral *dev, Error **errp)
 158 {
 159     ZipitLCD *z = ZIPIT_LCD(dev);
 160     z->selected = 0;
 161     z->enabled = 0;
 162     z->pos = 0;
 163 }
 164
 165 static VMStateDescription vmstate_zipit_lcd_state = {
 166     .name = "zipit-lcd",
 167     .version_id = 2,
 168     .minimum_version_id = 2,
 169     .fields = (VMStateField[]) {
 170         VMSTATE_SSI_PERIPHERAL(ssidev, ZipitLCD),
 171         VMSTATE_INT32(selected, ZipitLCD),
 172         VMSTATE_INT32(enabled, ZipitLCD),
 173         VMSTATE_BUFFER(buf, ZipitLCD),
 174         VMSTATE_UINT32(cur_reg, ZipitLCD),
 175         VMSTATE_INT32(pos, ZipitLCD),
 176         VMSTATE_END_OF_LIST(),
 177     }
 178 };
 179
 180 static void zipit_lcd_class_init(ObjectClass *klass, void *data)
 181 {
 182     DeviceClass *dc = DEVICE_CLASS(klass);
 183     SSIPeripheralClass *k = SSI_PERIPHERAL_CLASS(klass);
 184
 185     k->realize = zipit_lcd_realize;
 186     k->transfer = zipit_lcd_transfer;
 187     dc->vmsd = &vmstate_zipit_lcd_state;
 188 }
 189
 190 static const TypeInfo zipit_lcd_info = {
 191     .name          = TYPE_ZIPIT_LCD,
 192     .parent        = TYPE_SSI_PERIPHERAL,
 193     .instance_size = sizeof(ZipitLCD),
 194     .class_init    = zipit_lcd_class_init,
 195 };
 196
 197 #define TYPE_AER915 "aer915"
 198 OBJECT_DECLARE_SIMPLE_TYPE(AER915State, AER915)
 199
 200 struct AER915State {
 201     I2CSlave parent_obj;
 202
 203     int len;
 204     uint8_t buf[3];
 205 };
 206
 207 static int aer915_send(I2CSlave *i2c, uint8_t data)
 208 {
 209     AER915State *s = AER915(i2c);
 210
 211     s->buf[s->len] = data;
 212     if (s->len++ > 2) {
 213         DPRINTF("%s: message too long (%i bytes)\n",
 214             __func__, s->len);
 215         return 1;
 216     }
 217
 218     if (s->len == 2) {
 219         DPRINTF("%s: reg %d value 0x%02x\n", __func__,
 220                 s->buf[0], s->buf[1]);
 221     }
 222
 223     return 0;
 224 }
 225
 226 static int aer915_event(I2CSlave *i2c, enum i2c_event event)
 227 {
 228     AER915State *s = AER915(i2c);
 229
 230     switch (event) {
 231     case I2C_START_SEND:
 232         s->len = 0;
 233         break;
 234     case I2C_START_RECV:
 235         if (s->len != 1) {
 236             DPRINTF("%s: short message!?\n", __func__);
 237         }
 238         break;
 239     case I2C_FINISH:
 240         break;
 241     default:
 242         break;
 243     }
 244
 245     return 0;
 246 }
 247
 248 static uint8_t aer915_recv(I2CSlave *slave)
 249 {
 250     AER915State *s = AER915(slave);
 251     int retval = 0x00;
 252
 253     switch (s->buf[0]) {
 254     /* Return hardcoded battery voltage,
 255      * 0xf0 means ~4.1V
 256      */
 257     case 0x02:
 258         retval = 0xf0;
 259         break;
 260     /* Return 0x00 for other regs,
 261      * we don't know what they are for,
 262      * anyway they return 0x00 on real hardware.
 263      */
 264     default:
 265         break;
 266     }
 267
 268     return retval;
 269 }
 270
 271 static VMStateDescription vmstate_aer915_state = {
 272     .name = "aer915",
 273     .version_id = 1,
 274     .minimum_version_id = 1,
 275     .fields = (VMStateField[]) {
 276         VMSTATE_INT32(len, AER915State),
 277         VMSTATE_BUFFER(buf, AER915State),
 278         VMSTATE_END_OF_LIST(),
 279     }
 280 };
 281
 282 static void aer915_class_init(ObjectClass *klass, void *data)
 283 {
 284     DeviceClass *dc = DEVICE_CLASS(klass);
 285     I2CSlaveClass *k = I2C_SLAVE_CLASS(klass);
 286
 287     k->event = aer915_event;
 288     k->recv = aer915_recv;
 289     k->send = aer915_send;
 290     dc->vmsd = &vmstate_aer915_state;
 291 }
 292
 293 static const TypeInfo aer915_info = {
 294     .name          = TYPE_AER915,
 295     .parent        = TYPE_I2C_SLAVE,
 296     .instance_size = sizeof(AER915State),
 297     .class_init    = aer915_class_init,
 298 };
 299
 300 static void z2_init(MachineState *machine)
 301 {
 302     MemoryRegion *address_space_mem = get_system_memory();
 303     uint32_t sector_len = 0x10000;
 304     PXA2xxState *mpu;
 305     DriveInfo *dinfo;
 306     void *z2_lcd;
 307     I2CBus *bus;
 308     DeviceState *wm;
 309
 310     /* Setup CPU & memory */
 311     mpu = pxa270_init(address_space_mem, z2_binfo.ram_size, machine->cpu_type);
 312
 313     dinfo = drive_get(IF_PFLASH, 0, 0);
 314     if (!pflash_cfi01_register(Z2_FLASH_BASE, "z2.flash0", Z2_FLASH_SIZE,
 315                                dinfo ? blk_by_legacy_dinfo(dinfo) : NULL,
 316                                sector_len, 4, 0, 0, 0, 0, 0)) {
 317         error_report("Error registering flash memory");
 318         exit(1);
 319     }
 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     i2c_slave_create_simple(bus, TYPE_AER915, 0x55);
 334     wm = DEVICE(i2c_slave_create_simple(bus, TYPE_WM8750, 0x1b));
 335     mpu->i2s->opaque = wm;
 336     mpu->i2s->codec_out = wm8750_dac_dat;
 337     mpu->i2s->codec_in = wm8750_adc_dat;
 338     wm8750_data_req_set(wm, mpu->i2s->data_req, mpu->i2s);
 339
 340     qdev_connect_gpio_out(mpu->gpio, Z2_GPIO_LCD_CS,
 341                           qemu_allocate_irq(z2_lcd_cs, z2_lcd, 0));
 342
 343     z2_binfo.board_id = 0x6dd;
 344     arm_load_kernel(mpu->cpu, machine, &z2_binfo);
 345 }
 346
 347 static void z2_machine_init(MachineClass *mc)
 348 {
 349     mc->desc = "Zipit Z2 (PXA27x)";
 350     mc->init = z2_init;
 351     mc->ignore_memory_transaction_failures = true;
 352     mc->default_cpu_type = ARM_CPU_TYPE_NAME("pxa270-c5");
 353 }
 354
 355 DEFINE_MACHINE("z2", z2_machine_init)