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