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 "qom/object.h" 29 #include "qapi/error.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 = (const 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 = (const 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 I2CSlave *i2c_dev; 311 312 /* Setup CPU & memory */ 313 mpu = pxa270_init(z2_binfo.ram_size, machine->cpu_type); 314 315 dinfo = drive_get(IF_PFLASH, 0, 0); 316 pflash_cfi01_register(Z2_FLASH_BASE, "z2.flash0", Z2_FLASH_SIZE, 317 dinfo ? blk_by_legacy_dinfo(dinfo) : NULL, 318 FLASH_SECTOR_SIZE, 4, 0, 0, 0, 0, 0); 319 320 /* setup keypad */ 321 pxa27x_register_keypad(mpu->kp, map, 0x100); 322 323 /* MMC/SD host */ 324 pxa2xx_mmci_handlers(mpu->mmc, 325 NULL, 326 qdev_get_gpio_in(mpu->gpio, Z2_GPIO_SD_DETECT)); 327 328 type_register_static(&zipit_lcd_info); 329 type_register_static(&aer915_info); 330 z2_lcd = ssi_create_peripheral(mpu->ssp[1], TYPE_ZIPIT_LCD); 331 bus = pxa2xx_i2c_bus(mpu->i2c[0]); 332 333 i2c_slave_create_simple(bus, TYPE_AER915, 0x55); 334 335 i2c_dev = i2c_slave_new(TYPE_WM8750, 0x1b); 336 wm = DEVICE(i2c_dev); 337 338 if (machine->audiodev) { 339 qdev_prop_set_string(wm, "audiodev", machine->audiodev); 340 } 341 i2c_slave_realize_and_unref(i2c_dev, bus, &error_abort); 342 343 mpu->i2s->opaque = wm; 344 mpu->i2s->codec_out = wm8750_dac_dat; 345 mpu->i2s->codec_in = wm8750_adc_dat; 346 wm8750_data_req_set(wm, mpu->i2s->data_req, mpu->i2s); 347 348 qdev_connect_gpio_out(mpu->gpio, Z2_GPIO_LCD_CS, 349 qemu_allocate_irq(z2_lcd_cs, z2_lcd, 0)); 350 351 z2_binfo.board_id = 0x6dd; 352 arm_load_kernel(mpu->cpu, machine, &z2_binfo); 353 } 354 355 static void z2_machine_init(MachineClass *mc) 356 { 357 mc->desc = "Zipit Z2 (PXA27x)"; 358 mc->init = z2_init; 359 mc->ignore_memory_transaction_failures = true; 360 mc->default_cpu_type = ARM_CPU_TYPE_NAME("pxa270-c5"); 361 362 machine_add_audiodev_property(mc); 363 } 364 365 DEFINE_MACHINE("z2", z2_machine_init) 366