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 "hw/hw.h" 15 #include "hw/arm/pxa.h" 16 #include "hw/arm/arm.h" 17 #include "hw/devices.h" 18 #include "hw/i2c/i2c.h" 19 #include "hw/ssi.h" 20 #include "hw/boards.h" 21 #include "sysemu/sysemu.h" 22 #include "hw/block/flash.h" 23 #include "sysemu/blockdev.h" 24 #include "ui/console.h" 25 #include "audio/audio.h" 26 #include "exec/address-spaces.h" 27 #include "sysemu/qtest.h" 28 29 #ifdef DEBUG_Z2 30 #define DPRINTF(fmt, ...) \ 31 printf(fmt, ## __VA_ARGS__) 32 #else 33 #define DPRINTF(fmt, ...) 34 #endif 35 36 static const struct keymap map[0x100] = { 37 [0 ... 0xff] = { -1, -1 }, 38 [0x3b] = {0, 0}, /* Option = F1 */ 39 [0xc8] = {0, 1}, /* Up */ 40 [0xd0] = {0, 2}, /* Down */ 41 [0xcb] = {0, 3}, /* Left */ 42 [0xcd] = {0, 4}, /* Right */ 43 [0xcf] = {0, 5}, /* End */ 44 [0x0d] = {0, 6}, /* KPPLUS */ 45 [0xc7] = {1, 0}, /* Home */ 46 [0x10] = {1, 1}, /* Q */ 47 [0x17] = {1, 2}, /* I */ 48 [0x22] = {1, 3}, /* G */ 49 [0x2d] = {1, 4}, /* X */ 50 [0x1c] = {1, 5}, /* Enter */ 51 [0x0c] = {1, 6}, /* KPMINUS */ 52 [0xc9] = {2, 0}, /* PageUp */ 53 [0x11] = {2, 1}, /* W */ 54 [0x18] = {2, 2}, /* O */ 55 [0x23] = {2, 3}, /* H */ 56 [0x2e] = {2, 4}, /* C */ 57 [0x38] = {2, 5}, /* LeftAlt */ 58 [0xd1] = {3, 0}, /* PageDown */ 59 [0x12] = {3, 1}, /* E */ 60 [0x19] = {3, 2}, /* P */ 61 [0x24] = {3, 3}, /* J */ 62 [0x2f] = {3, 4}, /* V */ 63 [0x2a] = {3, 5}, /* LeftShift */ 64 [0x01] = {4, 0}, /* Esc */ 65 [0x13] = {4, 1}, /* R */ 66 [0x1e] = {4, 2}, /* A */ 67 [0x25] = {4, 3}, /* K */ 68 [0x30] = {4, 4}, /* B */ 69 [0x1d] = {4, 5}, /* LeftCtrl */ 70 [0x0f] = {5, 0}, /* Tab */ 71 [0x14] = {5, 1}, /* T */ 72 [0x1f] = {5, 2}, /* S */ 73 [0x26] = {5, 3}, /* L */ 74 [0x31] = {5, 4}, /* N */ 75 [0x39] = {5, 5}, /* Space */ 76 [0x3c] = {6, 0}, /* Stop = F2 */ 77 [0x15] = {6, 1}, /* Y */ 78 [0x20] = {6, 2}, /* D */ 79 [0x0e] = {6, 3}, /* Backspace */ 80 [0x32] = {6, 4}, /* M */ 81 [0x33] = {6, 5}, /* Comma */ 82 [0x3d] = {7, 0}, /* Play = F3 */ 83 [0x16] = {7, 1}, /* U */ 84 [0x21] = {7, 2}, /* F */ 85 [0x2c] = {7, 3}, /* Z */ 86 [0x27] = {7, 4}, /* Semicolon */ 87 [0x34] = {7, 5}, /* Dot */ 88 }; 89 90 #define Z2_RAM_SIZE 0x02000000 91 #define Z2_FLASH_BASE 0x00000000 92 #define Z2_FLASH_SIZE 0x00800000 93 94 static struct arm_boot_info z2_binfo = { 95 .loader_start = PXA2XX_SDRAM_BASE, 96 .ram_size = Z2_RAM_SIZE, 97 }; 98 99 #define Z2_GPIO_SD_DETECT 96 100 #define Z2_GPIO_AC_IN 0 101 #define Z2_GPIO_KEY_ON 1 102 #define Z2_GPIO_LCD_CS 88 103 104 typedef struct { 105 SSISlave ssidev; 106 int32_t selected; 107 int32_t enabled; 108 uint8_t buf[3]; 109 uint32_t cur_reg; 110 int pos; 111 } ZipitLCD; 112 113 static uint32_t zipit_lcd_transfer(SSISlave *dev, uint32_t value) 114 { 115 ZipitLCD *z = FROM_SSI_SLAVE(ZipitLCD, dev); 116 uint16_t val; 117 if (z->selected) { 118 z->buf[z->pos] = value & 0xff; 119 z->pos++; 120 } 121 if (z->pos == 3) { 122 switch (z->buf[0]) { 123 case 0x74: 124 DPRINTF("%s: reg: 0x%.2x\n", __func__, z->buf[2]); 125 z->cur_reg = z->buf[2]; 126 break; 127 case 0x76: 128 val = z->buf[1] << 8 | z->buf[2]; 129 DPRINTF("%s: value: 0x%.4x\n", __func__, val); 130 if (z->cur_reg == 0x22 && val == 0x0000) { 131 z->enabled = 1; 132 printf("%s: LCD enabled\n", __func__); 133 } else if (z->cur_reg == 0x10 && val == 0x0000) { 134 z->enabled = 0; 135 printf("%s: LCD disabled\n", __func__); 136 } 137 break; 138 default: 139 DPRINTF("%s: unknown command!\n", __func__); 140 break; 141 } 142 z->pos = 0; 143 } 144 return 0; 145 } 146 147 static void z2_lcd_cs(void *opaque, int line, int level) 148 { 149 ZipitLCD *z2_lcd = opaque; 150 z2_lcd->selected = !level; 151 } 152 153 static int zipit_lcd_init(SSISlave *dev) 154 { 155 ZipitLCD *z = FROM_SSI_SLAVE(ZipitLCD, dev); 156 z->selected = 0; 157 z->enabled = 0; 158 z->pos = 0; 159 160 return 0; 161 } 162 163 static VMStateDescription vmstate_zipit_lcd_state = { 164 .name = "zipit-lcd", 165 .version_id = 2, 166 .minimum_version_id = 2, 167 .minimum_version_id_old = 2, 168 .fields = (VMStateField[]) { 169 VMSTATE_SSI_SLAVE(ssidev, ZipitLCD), 170 VMSTATE_INT32(selected, ZipitLCD), 171 VMSTATE_INT32(enabled, ZipitLCD), 172 VMSTATE_BUFFER(buf, ZipitLCD), 173 VMSTATE_UINT32(cur_reg, ZipitLCD), 174 VMSTATE_INT32(pos, ZipitLCD), 175 VMSTATE_END_OF_LIST(), 176 } 177 }; 178 179 static void zipit_lcd_class_init(ObjectClass *klass, void *data) 180 { 181 DeviceClass *dc = DEVICE_CLASS(klass); 182 SSISlaveClass *k = SSI_SLAVE_CLASS(klass); 183 184 k->init = zipit_lcd_init; 185 k->transfer = zipit_lcd_transfer; 186 dc->vmsd = &vmstate_zipit_lcd_state; 187 } 188 189 static const TypeInfo zipit_lcd_info = { 190 .name = "zipit-lcd", 191 .parent = TYPE_SSI_SLAVE, 192 .instance_size = sizeof(ZipitLCD), 193 .class_init = zipit_lcd_class_init, 194 }; 195 196 #define TYPE_AER915 "aer915" 197 #define AER915(obj) OBJECT_CHECK(AER915State, (obj), TYPE_AER915) 198 199 typedef struct AER915State { 200 I2CSlave parent_obj; 201 202 int len; 203 uint8_t buf[3]; 204 } AER915State; 205 206 static int aer915_send(I2CSlave *i2c, uint8_t data) 207 { 208 AER915State *s = AER915(i2c); 209 210 s->buf[s->len] = data; 211 if (s->len++ > 2) { 212 DPRINTF("%s: message too long (%i bytes)\n", 213 __func__, s->len); 214 return 1; 215 } 216 217 if (s->len == 2) { 218 DPRINTF("%s: reg %d value 0x%02x\n", __func__, 219 s->buf[0], s->buf[1]); 220 } 221 222 return 0; 223 } 224 225 static void aer915_event(I2CSlave *i2c, enum i2c_event event) 226 { 227 AER915State *s = AER915(i2c); 228 229 switch (event) { 230 case I2C_START_SEND: 231 s->len = 0; 232 break; 233 case I2C_START_RECV: 234 if (s->len != 1) { 235 DPRINTF("%s: short message!?\n", __func__); 236 } 237 break; 238 case I2C_FINISH: 239 break; 240 default: 241 break; 242 } 243 } 244 245 static int 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 int aer915_init(I2CSlave *i2c) 269 { 270 /* Nothing to do. */ 271 return 0; 272 } 273 274 static VMStateDescription vmstate_aer915_state = { 275 .name = "aer915", 276 .version_id = 1, 277 .minimum_version_id = 1, 278 .minimum_version_id_old = 1, 279 .fields = (VMStateField[]) { 280 VMSTATE_INT32(len, AER915State), 281 VMSTATE_BUFFER(buf, AER915State), 282 VMSTATE_END_OF_LIST(), 283 } 284 }; 285 286 static void aer915_class_init(ObjectClass *klass, void *data) 287 { 288 DeviceClass *dc = DEVICE_CLASS(klass); 289 I2CSlaveClass *k = I2C_SLAVE_CLASS(klass); 290 291 k->init = aer915_init; 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(QEMUMachineInitArgs *args) 306 { 307 const char *cpu_model = args->cpu_model; 308 const char *kernel_filename = args->kernel_filename; 309 const char *kernel_cmdline = args->kernel_cmdline; 310 const char *initrd_filename = args->initrd_filename; 311 MemoryRegion *address_space_mem = get_system_memory(); 312 uint32_t sector_len = 0x10000; 313 PXA2xxState *mpu; 314 DriveInfo *dinfo; 315 int be; 316 void *z2_lcd; 317 I2CBus *bus; 318 DeviceState *wm; 319 320 if (!cpu_model) { 321 cpu_model = "pxa270-c5"; 322 } 323 324 /* Setup CPU & memory */ 325 mpu = pxa270_init(address_space_mem, z2_binfo.ram_size, cpu_model); 326 327 #ifdef TARGET_WORDS_BIGENDIAN 328 be = 1; 329 #else 330 be = 0; 331 #endif 332 dinfo = drive_get(IF_PFLASH, 0, 0); 333 if (!dinfo && !qtest_enabled()) { 334 fprintf(stderr, "Flash image must be given with the " 335 "'pflash' parameter\n"); 336 exit(1); 337 } 338 339 if (!pflash_cfi01_register(Z2_FLASH_BASE, 340 NULL, "z2.flash0", Z2_FLASH_SIZE, 341 dinfo ? dinfo->bdrv : NULL, sector_len, 342 Z2_FLASH_SIZE / sector_len, 4, 0, 0, 0, 0, 343 be)) { 344 fprintf(stderr, "qemu: Error registering flash memory.\n"); 345 exit(1); 346 } 347 348 /* setup keypad */ 349 pxa27x_register_keypad(mpu->kp, map, 0x100); 350 351 /* MMC/SD host */ 352 pxa2xx_mmci_handlers(mpu->mmc, 353 NULL, 354 qdev_get_gpio_in(mpu->gpio, Z2_GPIO_SD_DETECT)); 355 356 type_register_static(&zipit_lcd_info); 357 type_register_static(&aer915_info); 358 z2_lcd = ssi_create_slave(mpu->ssp[1], "zipit-lcd"); 359 bus = pxa2xx_i2c_bus(mpu->i2c[0]); 360 i2c_create_slave(bus, TYPE_AER915, 0x55); 361 wm = i2c_create_slave(bus, "wm8750", 0x1b); 362 mpu->i2s->opaque = wm; 363 mpu->i2s->codec_out = wm8750_dac_dat; 364 mpu->i2s->codec_in = wm8750_adc_dat; 365 wm8750_data_req_set(wm, mpu->i2s->data_req, mpu->i2s); 366 367 qdev_connect_gpio_out(mpu->gpio, Z2_GPIO_LCD_CS, 368 qemu_allocate_irqs(z2_lcd_cs, z2_lcd, 1)[0]); 369 370 z2_binfo.kernel_filename = kernel_filename; 371 z2_binfo.kernel_cmdline = kernel_cmdline; 372 z2_binfo.initrd_filename = initrd_filename; 373 z2_binfo.board_id = 0x6dd; 374 arm_load_kernel(mpu->cpu, &z2_binfo); 375 } 376 377 static QEMUMachine z2_machine = { 378 .name = "z2", 379 .desc = "Zipit Z2 (PXA27x)", 380 .init = z2_init, 381 }; 382 383 static void z2_machine_init(void) 384 { 385 qemu_register_machine(&z2_machine); 386 } 387 388 machine_init(z2_machine_init); 389