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/hw.h"
  16 #include "hw/arm/pxa.h"
  17 #include "hw/arm/arm.h"
  18 #include "hw/devices.h"
  19 #include "hw/i2c/i2c.h"
  20 #include "hw/ssi/ssi.h"
  21 #include "hw/boards.h"
  22 #include "sysemu/sysemu.h"
  23 #include "hw/block/flash.h"
  24 #include "sysemu/block-backend.h"
  25 #include "ui/console.h"
  26 #include "audio/audio.h"
  27 #include "exec/address-spaces.h"
  28 #include "sysemu/qtest.h"
  29 #include "cpu.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 typedef struct {
 107     SSISlave ssidev;
 108     int32_t selected;
 109     int32_t enabled;
 110     uint8_t buf[3];
 111     uint32_t cur_reg;
 112     int pos;
 113 } ZipitLCD;
 114
 115 static uint32_t zipit_lcd_transfer(SSISlave *dev, uint32_t value)
 116 {
 117     ZipitLCD *z = FROM_SSI_SLAVE(ZipitLCD, dev);
 118     uint16_t val;
 119     if (z->selected) {
 120         z->buf[z->pos] = value & 0xff;
 121         z->pos++;
 122     }
 123     if (z->pos == 3) {
 124         switch (z->buf[0]) {
 125         case 0x74:
 126             DPRINTF("%s: reg: 0x%.2x\n", __func__, z->buf[2]);
 127             z->cur_reg = z->buf[2];
 128             break;
 129         case 0x76:
 130             val = z->buf[1] << 8 | z->buf[2];
 131             DPRINTF("%s: value: 0x%.4x\n", __func__, val);
 132             if (z->cur_reg == 0x22 && val == 0x0000) {
 133                 z->enabled = 1;
 134                 printf("%s: LCD enabled\n", __func__);
 135             } else if (z->cur_reg == 0x10 && val == 0x0000) {
 136                 z->enabled = 0;
 137                 printf("%s: LCD disabled\n", __func__);
 138             }
 139             break;
 140         default:
 141             DPRINTF("%s: unknown command!\n", __func__);
 142             break;
 143         }
 144         z->pos = 0;
 145     }
 146     return 0;
 147 }
 148
 149 static void z2_lcd_cs(void *opaque, int line, int level)
 150 {
 151     ZipitLCD *z2_lcd = opaque;
 152     z2_lcd->selected = !level;
 153 }
 154
 155 static void zipit_lcd_realize(SSISlave *dev, Error **errp)
 156 {
 157     ZipitLCD *z = FROM_SSI_SLAVE(ZipitLCD, dev);
 158     z->selected = 0;
 159     z->enabled = 0;
 160     z->pos = 0;
 161 }
 162
 163 static VMStateDescription vmstate_zipit_lcd_state = {
 164     .name = "zipit-lcd",
 165     .version_id = 2,
 166     .minimum_version_id = 2,
 167     .fields = (VMStateField[]) {
 168         VMSTATE_SSI_SLAVE(ssidev, ZipitLCD),
 169         VMSTATE_INT32(selected, ZipitLCD),
 170         VMSTATE_INT32(enabled, ZipitLCD),
 171         VMSTATE_BUFFER(buf, ZipitLCD),
 172         VMSTATE_UINT32(cur_reg, ZipitLCD),
 173         VMSTATE_INT32(pos, ZipitLCD),
 174         VMSTATE_END_OF_LIST(),
 175     }
 176 };
 177
 178 static void zipit_lcd_class_init(ObjectClass *klass, void *data)
 179 {
 180     DeviceClass *dc = DEVICE_CLASS(klass);
 181     SSISlaveClass *k = SSI_SLAVE_CLASS(klass);
 182
 183     k->realize = zipit_lcd_realize;
 184     k->transfer = zipit_lcd_transfer;
 185     dc->vmsd = &vmstate_zipit_lcd_state;
 186 }
 187
 188 static const TypeInfo zipit_lcd_info = {
 189     .name          = "zipit-lcd",
 190     .parent        = TYPE_SSI_SLAVE,
 191     .instance_size = sizeof(ZipitLCD),
 192     .class_init    = zipit_lcd_class_init,
 193 };
 194
 195 #define TYPE_AER915 "aer915"
 196 #define AER915(obj) OBJECT_CHECK(AER915State, (obj), TYPE_AER915)
 197
 198 typedef struct AER915State {
 199     I2CSlave parent_obj;
 200
 201     int len;
 202     uint8_t buf[3];
 203 } AER915State;
 204
 205 static int aer915_send(I2CSlave *i2c, uint8_t data)
 206 {
 207     AER915State *s = AER915(i2c);
 208
 209     s->buf[s->len] = data;
 210     if (s->len++ > 2) {
 211         DPRINTF("%s: message too long (%i bytes)\n",
 212             __func__, s->len);
 213         return 1;
 214     }
 215
 216     if (s->len == 2) {
 217         DPRINTF("%s: reg %d value 0x%02x\n", __func__,
 218                 s->buf[0], s->buf[1]);
 219     }
 220
 221     return 0;
 222 }
 223
 224 static int aer915_event(I2CSlave *i2c, enum i2c_event event)
 225 {
 226     AER915State *s = AER915(i2c);
 227
 228     switch (event) {
 229     case I2C_START_SEND:
 230         s->len = 0;
 231         break;
 232     case I2C_START_RECV:
 233         if (s->len != 1) {
 234             DPRINTF("%s: short message!?\n", __func__);
 235         }
 236         break;
 237     case I2C_FINISH:
 238         break;
 239     default:
 240         break;
 241     }
 242
 243     return 0;
 244 }
 245
 246 static int aer915_recv(I2CSlave *slave)
 247 {
 248     AER915State *s = AER915(slave);
 249     int retval = 0x00;
 250
 251     switch (s->buf[0]) {
 252     /* Return hardcoded battery voltage,
 253      * 0xf0 means ~4.1V
 254      */
 255     case 0x02:
 256         retval = 0xf0;
 257         break;
 258     /* Return 0x00 for other regs,
 259      * we don't know what they are for,
 260      * anyway they return 0x00 on real hardware.
 261      */
 262     default:
 263         break;
 264     }
 265
 266     return retval;
 267 }
 268
 269 static VMStateDescription vmstate_aer915_state = {
 270     .name = "aer915",
 271     .version_id = 1,
 272     .minimum_version_id = 1,
 273     .fields = (VMStateField[]) {
 274         VMSTATE_INT32(len, AER915State),
 275         VMSTATE_BUFFER(buf, AER915State),
 276         VMSTATE_END_OF_LIST(),
 277     }
 278 };
 279
 280 static void aer915_class_init(ObjectClass *klass, void *data)
 281 {
 282     DeviceClass *dc = DEVICE_CLASS(klass);
 283     I2CSlaveClass *k = I2C_SLAVE_CLASS(klass);
 284
 285     k->event = aer915_event;
 286     k->recv = aer915_recv;
 287     k->send = aer915_send;
 288     dc->vmsd = &vmstate_aer915_state;
 289 }
 290
 291 static const TypeInfo aer915_info = {
 292     .name          = TYPE_AER915,
 293     .parent        = TYPE_I2C_SLAVE,
 294     .instance_size = sizeof(AER915State),
 295     .class_init    = aer915_class_init,
 296 };
 297
 298 static void z2_init(MachineState *machine)
 299 {
 300     const char *kernel_filename = machine->kernel_filename;
 301     const char *kernel_cmdline = machine->kernel_cmdline;
 302     const char *initrd_filename = machine->initrd_filename;
 303     MemoryRegion *address_space_mem = get_system_memory();
 304     uint32_t sector_len = 0x10000;
 305     PXA2xxState *mpu;
 306     DriveInfo *dinfo;
 307     int be;
 308     void *z2_lcd;
 309     I2CBus *bus;
 310     DeviceState *wm;
 311
 312     /* Setup CPU & memory */
 313     mpu = pxa270_init(address_space_mem, z2_binfo.ram_size, machine->cpu_type);
 314
 315 #ifdef TARGET_WORDS_BIGENDIAN
 316     be = 1;
 317 #else
 318     be = 0;
 319 #endif
 320     dinfo = drive_get(IF_PFLASH, 0, 0);
 321     if (!dinfo && !qtest_enabled()) {
 322         fprintf(stderr, "Flash image must be given with the "
 323                 "'pflash' parameter\n");
 324         exit(1);
 325     }
 326
 327     if (!pflash_cfi01_register(Z2_FLASH_BASE,
 328                                NULL, "z2.flash0", Z2_FLASH_SIZE,
 329                                dinfo ? blk_by_legacy_dinfo(dinfo) : NULL,
 330                                sector_len, Z2_FLASH_SIZE / sector_len,
 331                                4, 0, 0, 0, 0, be)) {
 332         fprintf(stderr, "qemu: Error registering flash memory.\n");
 333         exit(1);
 334     }
 335
 336     /* setup keypad */
 337     pxa27x_register_keypad(mpu->kp, map, 0x100);
 338
 339     /* MMC/SD host */
 340     pxa2xx_mmci_handlers(mpu->mmc,
 341         NULL,
 342         qdev_get_gpio_in(mpu->gpio, Z2_GPIO_SD_DETECT));
 343
 344     type_register_static(&zipit_lcd_info);
 345     type_register_static(&aer915_info);
 346     z2_lcd = ssi_create_slave(mpu->ssp[1], "zipit-lcd");
 347     bus = pxa2xx_i2c_bus(mpu->i2c[0]);
 348     i2c_create_slave(bus, TYPE_AER915, 0x55);
 349     wm = i2c_create_slave(bus, "wm8750", 0x1b);
 350     mpu->i2s->opaque = wm;
 351     mpu->i2s->codec_out = wm8750_dac_dat;
 352     mpu->i2s->codec_in = wm8750_adc_dat;
 353     wm8750_data_req_set(wm, mpu->i2s->data_req, mpu->i2s);
 354
 355     qdev_connect_gpio_out(mpu->gpio, Z2_GPIO_LCD_CS,
 356                           qemu_allocate_irq(z2_lcd_cs, z2_lcd, 0));
 357
 358     z2_binfo.kernel_filename = kernel_filename;
 359     z2_binfo.kernel_cmdline = kernel_cmdline;
 360     z2_binfo.initrd_filename = initrd_filename;
 361     z2_binfo.board_id = 0x6dd;
 362     arm_load_kernel(mpu->cpu, &z2_binfo);
 363 }
 364
 365 static void z2_machine_init(MachineClass *mc)
 366 {
 367     mc->desc = "Zipit Z2 (PXA27x)";
 368     mc->init = z2_init;
 369     mc->ignore_memory_transaction_failures = true;
 370     mc->default_cpu_type = ARM_CPU_TYPE_NAME("pxa270-c5");
 371 }
 372
 373 DEFINE_MACHINE("z2", z2_machine_init)