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 "sysemu/qtest.h"
  28 #include "cpu.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 typedef struct {
 106     SSISlave ssidev;
 107     int32_t selected;
 108     int32_t enabled;
 109     uint8_t buf[3];
 110     uint32_t cur_reg;
 111     int pos;
 112 } ZipitLCD;
 113
 114 static uint32_t zipit_lcd_transfer(SSISlave *dev, uint32_t value)
 115 {
 116     ZipitLCD *z = FROM_SSI_SLAVE(ZipitLCD, dev);
 117     uint16_t val;
 118     if (z->selected) {
 119         z->buf[z->pos] = value & 0xff;
 120         z->pos++;
 121     }
 122     if (z->pos == 3) {
 123         switch (z->buf[0]) {
 124         case 0x74:
 125             DPRINTF("%s: reg: 0x%.2x\n", __func__, z->buf[2]);
 126             z->cur_reg = z->buf[2];
 127             break;
 128         case 0x76:
 129             val = z->buf[1] << 8 | z->buf[2];
 130             DPRINTF("%s: value: 0x%.4x\n", __func__, val);
 131             if (z->cur_reg == 0x22 && val == 0x0000) {
 132                 z->enabled = 1;
 133                 printf("%s: LCD enabled\n", __func__);
 134             } else if (z->cur_reg == 0x10 && val == 0x0000) {
 135                 z->enabled = 0;
 136                 printf("%s: LCD disabled\n", __func__);
 137             }
 138             break;
 139         default:
 140             DPRINTF("%s: unknown command!\n", __func__);
 141             break;
 142         }
 143         z->pos = 0;
 144     }
 145     return 0;
 146 }
 147
 148 static void z2_lcd_cs(void *opaque, int line, int level)
 149 {
 150     ZipitLCD *z2_lcd = opaque;
 151     z2_lcd->selected = !level;
 152 }
 153
 154 static void zipit_lcd_realize(SSISlave *dev, Error **errp)
 155 {
 156     ZipitLCD *z = FROM_SSI_SLAVE(ZipitLCD, dev);
 157     z->selected = 0;
 158     z->enabled = 0;
 159     z->pos = 0;
 160 }
 161
 162 static VMStateDescription vmstate_zipit_lcd_state = {
 163     .name = "zipit-lcd",
 164     .version_id = 2,
 165     .minimum_version_id = 2,
 166     .fields = (VMStateField[]) {
 167         VMSTATE_SSI_SLAVE(ssidev, ZipitLCD),
 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->realize = zipit_lcd_realize;
 183     k->transfer = zipit_lcd_transfer;
 184     dc->vmsd = &vmstate_zipit_lcd_state;
 185 }
 186
 187 static const 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 #define TYPE_AER915 "aer915"
 195 #define AER915(obj) OBJECT_CHECK(AER915State, (obj), TYPE_AER915)
 196
 197 typedef struct AER915State {
 198     I2CSlave parent_obj;
 199
 200     int len;
 201     uint8_t buf[3];
 202 } AER915State;
 203
 204 static int aer915_send(I2CSlave *i2c, uint8_t data)
 205 {
 206     AER915State *s = AER915(i2c);
 207
 208     s->buf[s->len] = data;
 209     if (s->len++ > 2) {
 210         DPRINTF("%s: message too long (%i bytes)\n",
 211             __func__, s->len);
 212         return 1;
 213     }
 214
 215     if (s->len == 2) {
 216         DPRINTF("%s: reg %d value 0x%02x\n", __func__,
 217                 s->buf[0], s->buf[1]);
 218     }
 219
 220     return 0;
 221 }
 222
 223 static int aer915_event(I2CSlave *i2c, enum i2c_event event)
 224 {
 225     AER915State *s = AER915(i2c);
 226
 227     switch (event) {
 228     case I2C_START_SEND:
 229         s->len = 0;
 230         break;
 231     case I2C_START_RECV:
 232         if (s->len != 1) {
 233             DPRINTF("%s: short message!?\n", __func__);
 234         }
 235         break;
 236     case I2C_FINISH:
 237         break;
 238     default:
 239         break;
 240     }
 241
 242     return 0;
 243 }
 244
 245 static uint8_t 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 VMStateDescription vmstate_aer915_state = {
 269     .name = "aer915",
 270     .version_id = 1,
 271     .minimum_version_id = 1,
 272     .fields = (VMStateField[]) {
 273         VMSTATE_INT32(len, AER915State),
 274         VMSTATE_BUFFER(buf, AER915State),
 275         VMSTATE_END_OF_LIST(),
 276     }
 277 };
 278
 279 static void aer915_class_init(ObjectClass *klass, void *data)
 280 {
 281     DeviceClass *dc = DEVICE_CLASS(klass);
 282     I2CSlaveClass *k = I2C_SLAVE_CLASS(klass);
 283
 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 const TypeInfo aer915_info = {
 291     .name          = TYPE_AER915,
 292     .parent        = TYPE_I2C_SLAVE,
 293     .instance_size = sizeof(AER915State),
 294     .class_init    = aer915_class_init,
 295 };
 296
 297 static void z2_init(MachineState *machine)
 298 {
 299     const char *kernel_filename = machine->kernel_filename;
 300     const char *kernel_cmdline = machine->kernel_cmdline;
 301     const char *initrd_filename = machine->initrd_filename;
 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     I2CBus *bus;
 309     DeviceState *wm;
 310
 311     /* Setup CPU & memory */
 312     mpu = pxa270_init(address_space_mem, z2_binfo.ram_size, machine->cpu_type);
 313
 314 #ifdef TARGET_WORDS_BIGENDIAN
 315     be = 1;
 316 #else
 317     be = 0;
 318 #endif
 319     dinfo = drive_get(IF_PFLASH, 0, 0);
 320     if (!dinfo && !qtest_enabled()) {
 321         error_report("Flash image must be given with the "
 322                      "'pflash' parameter");
 323         exit(1);
 324     }
 325
 326     if (!pflash_cfi01_register(Z2_FLASH_BASE, "z2.flash0", Z2_FLASH_SIZE,
 327                                dinfo ? blk_by_legacy_dinfo(dinfo) : NULL,
 328                                sector_len, 4, 0, 0, 0, 0, be)) {
 329         error_report("Error registering flash memory");
 330         exit(1);
 331     }
 332
 333     /* setup keypad */
 334     pxa27x_register_keypad(mpu->kp, map, 0x100);
 335
 336     /* MMC/SD host */
 337     pxa2xx_mmci_handlers(mpu->mmc,
 338         NULL,
 339         qdev_get_gpio_in(mpu->gpio, Z2_GPIO_SD_DETECT));
 340
 341     type_register_static(&zipit_lcd_info);
 342     type_register_static(&aer915_info);
 343     z2_lcd = ssi_create_slave(mpu->ssp[1], "zipit-lcd");
 344     bus = pxa2xx_i2c_bus(mpu->i2c[0]);
 345     i2c_create_slave(bus, TYPE_AER915, 0x55);
 346     wm = i2c_create_slave(bus, TYPE_WM8750, 0x1b);
 347     mpu->i2s->opaque = wm;
 348     mpu->i2s->codec_out = wm8750_dac_dat;
 349     mpu->i2s->codec_in = wm8750_adc_dat;
 350     wm8750_data_req_set(wm, mpu->i2s->data_req, mpu->i2s);
 351
 352     qdev_connect_gpio_out(mpu->gpio, Z2_GPIO_LCD_CS,
 353                           qemu_allocate_irq(z2_lcd_cs, z2_lcd, 0));
 354
 355     z2_binfo.kernel_filename = kernel_filename;
 356     z2_binfo.kernel_cmdline = kernel_cmdline;
 357     z2_binfo.initrd_filename = initrd_filename;
 358     z2_binfo.board_id = 0x6dd;
 359     arm_load_kernel(mpu->cpu, &z2_binfo);
 360 }
 361
 362 static void z2_machine_init(MachineClass *mc)
 363 {
 364     mc->desc = "Zipit Z2 (PXA27x)";
 365     mc->init = z2_init;
 366     mc->ignore_memory_transaction_failures = true;
 367     mc->default_cpu_type = ARM_CPU_TYPE_NAME("pxa270-c5");
 368 }
 369
 370 DEFINE_MACHINE("z2", z2_machine_init)