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 #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 SSISlave ssidev; 108 int32_t selected; 109 int32_t enabled; 110 uint8_t buf[3]; 111 uint32_t cur_reg; 112 int pos; 113 }; 114 typedef struct ZipitLCD ZipitLCD; 115 116 #define TYPE_ZIPIT_LCD "zipit-lcd" 117 DECLARE_INSTANCE_CHECKER(ZipitLCD, ZIPIT_LCD, 118 TYPE_ZIPIT_LCD) 119 120 static uint32_t zipit_lcd_transfer(SSISlave *dev, uint32_t value) 121 { 122 ZipitLCD *z = ZIPIT_LCD(dev); 123 uint16_t val; 124 if (z->selected) { 125 z->buf[z->pos] = value & 0xff; 126 z->pos++; 127 } 128 if (z->pos == 3) { 129 switch (z->buf[0]) { 130 case 0x74: 131 DPRINTF("%s: reg: 0x%.2x\n", __func__, z->buf[2]); 132 z->cur_reg = z->buf[2]; 133 break; 134 case 0x76: 135 val = z->buf[1] << 8 | z->buf[2]; 136 DPRINTF("%s: value: 0x%.4x\n", __func__, val); 137 if (z->cur_reg == 0x22 && val == 0x0000) { 138 z->enabled = 1; 139 printf("%s: LCD enabled\n", __func__); 140 } else if (z->cur_reg == 0x10 && val == 0x0000) { 141 z->enabled = 0; 142 printf("%s: LCD disabled\n", __func__); 143 } 144 break; 145 default: 146 DPRINTF("%s: unknown command!\n", __func__); 147 break; 148 } 149 z->pos = 0; 150 } 151 return 0; 152 } 153 154 static void z2_lcd_cs(void *opaque, int line, int level) 155 { 156 ZipitLCD *z2_lcd = opaque; 157 z2_lcd->selected = !level; 158 } 159 160 static void zipit_lcd_realize(SSISlave *dev, Error **errp) 161 { 162 ZipitLCD *z = ZIPIT_LCD(dev); 163 z->selected = 0; 164 z->enabled = 0; 165 z->pos = 0; 166 } 167 168 static VMStateDescription vmstate_zipit_lcd_state = { 169 .name = "zipit-lcd", 170 .version_id = 2, 171 .minimum_version_id = 2, 172 .fields = (VMStateField[]) { 173 VMSTATE_SSI_SLAVE(ssidev, ZipitLCD), 174 VMSTATE_INT32(selected, ZipitLCD), 175 VMSTATE_INT32(enabled, ZipitLCD), 176 VMSTATE_BUFFER(buf, ZipitLCD), 177 VMSTATE_UINT32(cur_reg, ZipitLCD), 178 VMSTATE_INT32(pos, ZipitLCD), 179 VMSTATE_END_OF_LIST(), 180 } 181 }; 182 183 static void zipit_lcd_class_init(ObjectClass *klass, void *data) 184 { 185 DeviceClass *dc = DEVICE_CLASS(klass); 186 SSISlaveClass *k = SSI_SLAVE_CLASS(klass); 187 188 k->realize = zipit_lcd_realize; 189 k->transfer = zipit_lcd_transfer; 190 dc->vmsd = &vmstate_zipit_lcd_state; 191 } 192 193 static const TypeInfo zipit_lcd_info = { 194 .name = TYPE_ZIPIT_LCD, 195 .parent = TYPE_SSI_SLAVE, 196 .instance_size = sizeof(ZipitLCD), 197 .class_init = zipit_lcd_class_init, 198 }; 199 200 #define TYPE_AER915 "aer915" 201 typedef struct AER915State AER915State; 202 DECLARE_INSTANCE_CHECKER(AER915State, AER915, 203 TYPE_AER915) 204 205 struct AER915State { 206 I2CSlave parent_obj; 207 208 int len; 209 uint8_t buf[3]; 210 }; 211 212 static int aer915_send(I2CSlave *i2c, uint8_t data) 213 { 214 AER915State *s = AER915(i2c); 215 216 s->buf[s->len] = data; 217 if (s->len++ > 2) { 218 DPRINTF("%s: message too long (%i bytes)\n", 219 __func__, s->len); 220 return 1; 221 } 222 223 if (s->len == 2) { 224 DPRINTF("%s: reg %d value 0x%02x\n", __func__, 225 s->buf[0], s->buf[1]); 226 } 227 228 return 0; 229 } 230 231 static int aer915_event(I2CSlave *i2c, enum i2c_event event) 232 { 233 AER915State *s = AER915(i2c); 234 235 switch (event) { 236 case I2C_START_SEND: 237 s->len = 0; 238 break; 239 case I2C_START_RECV: 240 if (s->len != 1) { 241 DPRINTF("%s: short message!?\n", __func__); 242 } 243 break; 244 case I2C_FINISH: 245 break; 246 default: 247 break; 248 } 249 250 return 0; 251 } 252 253 static uint8_t aer915_recv(I2CSlave *slave) 254 { 255 AER915State *s = AER915(slave); 256 int retval = 0x00; 257 258 switch (s->buf[0]) { 259 /* Return hardcoded battery voltage, 260 * 0xf0 means ~4.1V 261 */ 262 case 0x02: 263 retval = 0xf0; 264 break; 265 /* Return 0x00 for other regs, 266 * we don't know what they are for, 267 * anyway they return 0x00 on real hardware. 268 */ 269 default: 270 break; 271 } 272 273 return retval; 274 } 275 276 static VMStateDescription vmstate_aer915_state = { 277 .name = "aer915", 278 .version_id = 1, 279 .minimum_version_id = 1, 280 .fields = (VMStateField[]) { 281 VMSTATE_INT32(len, AER915State), 282 VMSTATE_BUFFER(buf, AER915State), 283 VMSTATE_END_OF_LIST(), 284 } 285 }; 286 287 static void aer915_class_init(ObjectClass *klass, void *data) 288 { 289 DeviceClass *dc = DEVICE_CLASS(klass); 290 I2CSlaveClass *k = I2C_SLAVE_CLASS(klass); 291 292 k->event = aer915_event; 293 k->recv = aer915_recv; 294 k->send = aer915_send; 295 dc->vmsd = &vmstate_aer915_state; 296 } 297 298 static const TypeInfo aer915_info = { 299 .name = TYPE_AER915, 300 .parent = TYPE_I2C_SLAVE, 301 .instance_size = sizeof(AER915State), 302 .class_init = aer915_class_init, 303 }; 304 305 static void z2_init(MachineState *machine) 306 { 307 MemoryRegion *address_space_mem = get_system_memory(); 308 uint32_t sector_len = 0x10000; 309 PXA2xxState *mpu; 310 DriveInfo *dinfo; 311 void *z2_lcd; 312 I2CBus *bus; 313 DeviceState *wm; 314 315 /* Setup CPU & memory */ 316 mpu = pxa270_init(address_space_mem, z2_binfo.ram_size, machine->cpu_type); 317 318 dinfo = drive_get(IF_PFLASH, 0, 0); 319 if (!pflash_cfi01_register(Z2_FLASH_BASE, "z2.flash0", Z2_FLASH_SIZE, 320 dinfo ? blk_by_legacy_dinfo(dinfo) : NULL, 321 sector_len, 4, 0, 0, 0, 0, 0)) { 322 error_report("Error registering flash memory"); 323 exit(1); 324 } 325 326 /* setup keypad */ 327 pxa27x_register_keypad(mpu->kp, map, 0x100); 328 329 /* MMC/SD host */ 330 pxa2xx_mmci_handlers(mpu->mmc, 331 NULL, 332 qdev_get_gpio_in(mpu->gpio, Z2_GPIO_SD_DETECT)); 333 334 type_register_static(&zipit_lcd_info); 335 type_register_static(&aer915_info); 336 z2_lcd = ssi_create_slave(mpu->ssp[1], TYPE_ZIPIT_LCD); 337 bus = pxa2xx_i2c_bus(mpu->i2c[0]); 338 i2c_slave_create_simple(bus, TYPE_AER915, 0x55); 339 wm = DEVICE(i2c_slave_create_simple(bus, TYPE_WM8750, 0x1b)); 340 mpu->i2s->opaque = wm; 341 mpu->i2s->codec_out = wm8750_dac_dat; 342 mpu->i2s->codec_in = wm8750_adc_dat; 343 wm8750_data_req_set(wm, mpu->i2s->data_req, mpu->i2s); 344 345 qdev_connect_gpio_out(mpu->gpio, Z2_GPIO_LCD_CS, 346 qemu_allocate_irq(z2_lcd_cs, z2_lcd, 0)); 347 348 z2_binfo.board_id = 0x6dd; 349 arm_load_kernel(mpu->cpu, machine, &z2_binfo); 350 } 351 352 static void z2_machine_init(MachineClass *mc) 353 { 354 mc->desc = "Zipit Z2 (PXA27x)"; 355 mc->init = z2_init; 356 mc->ignore_memory_transaction_failures = true; 357 mc->default_cpu_type = ARM_CPU_TYPE_NAME("pxa270-c5"); 358 } 359 360 DEFINE_MACHINE("z2", z2_machine_init) 361