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 "hw/audio/wm8750.h" 27 #include "audio/audio.h" 28 #include "exec/address-spaces.h" 29 #include "sysemu/qtest.h" 30 #include "cpu.h" 31 32 #ifdef DEBUG_Z2 33 #define DPRINTF(fmt, ...) \ 34 printf(fmt, ## __VA_ARGS__) 35 #else 36 #define DPRINTF(fmt, ...) 37 #endif 38 39 static const struct keymap map[0x100] = { 40 [0 ... 0xff] = { -1, -1 }, 41 [0x3b] = {0, 0}, /* Option = F1 */ 42 [0xc8] = {0, 1}, /* Up */ 43 [0xd0] = {0, 2}, /* Down */ 44 [0xcb] = {0, 3}, /* Left */ 45 [0xcd] = {0, 4}, /* Right */ 46 [0xcf] = {0, 5}, /* End */ 47 [0x0d] = {0, 6}, /* KPPLUS */ 48 [0xc7] = {1, 0}, /* Home */ 49 [0x10] = {1, 1}, /* Q */ 50 [0x17] = {1, 2}, /* I */ 51 [0x22] = {1, 3}, /* G */ 52 [0x2d] = {1, 4}, /* X */ 53 [0x1c] = {1, 5}, /* Enter */ 54 [0x0c] = {1, 6}, /* KPMINUS */ 55 [0xc9] = {2, 0}, /* PageUp */ 56 [0x11] = {2, 1}, /* W */ 57 [0x18] = {2, 2}, /* O */ 58 [0x23] = {2, 3}, /* H */ 59 [0x2e] = {2, 4}, /* C */ 60 [0x38] = {2, 5}, /* LeftAlt */ 61 [0xd1] = {3, 0}, /* PageDown */ 62 [0x12] = {3, 1}, /* E */ 63 [0x19] = {3, 2}, /* P */ 64 [0x24] = {3, 3}, /* J */ 65 [0x2f] = {3, 4}, /* V */ 66 [0x2a] = {3, 5}, /* LeftShift */ 67 [0x01] = {4, 0}, /* Esc */ 68 [0x13] = {4, 1}, /* R */ 69 [0x1e] = {4, 2}, /* A */ 70 [0x25] = {4, 3}, /* K */ 71 [0x30] = {4, 4}, /* B */ 72 [0x1d] = {4, 5}, /* LeftCtrl */ 73 [0x0f] = {5, 0}, /* Tab */ 74 [0x14] = {5, 1}, /* T */ 75 [0x1f] = {5, 2}, /* S */ 76 [0x26] = {5, 3}, /* L */ 77 [0x31] = {5, 4}, /* N */ 78 [0x39] = {5, 5}, /* Space */ 79 [0x3c] = {6, 0}, /* Stop = F2 */ 80 [0x15] = {6, 1}, /* Y */ 81 [0x20] = {6, 2}, /* D */ 82 [0x0e] = {6, 3}, /* Backspace */ 83 [0x32] = {6, 4}, /* M */ 84 [0x33] = {6, 5}, /* Comma */ 85 [0x3d] = {7, 0}, /* Play = F3 */ 86 [0x16] = {7, 1}, /* U */ 87 [0x21] = {7, 2}, /* F */ 88 [0x2c] = {7, 3}, /* Z */ 89 [0x27] = {7, 4}, /* Semicolon */ 90 [0x34] = {7, 5}, /* Dot */ 91 }; 92 93 #define Z2_RAM_SIZE 0x02000000 94 #define Z2_FLASH_BASE 0x00000000 95 #define Z2_FLASH_SIZE 0x00800000 96 97 static struct arm_boot_info z2_binfo = { 98 .loader_start = PXA2XX_SDRAM_BASE, 99 .ram_size = Z2_RAM_SIZE, 100 }; 101 102 #define Z2_GPIO_SD_DETECT 96 103 #define Z2_GPIO_AC_IN 0 104 #define Z2_GPIO_KEY_ON 1 105 #define Z2_GPIO_LCD_CS 88 106 107 typedef struct { 108 SSISlave ssidev; 109 int32_t selected; 110 int32_t enabled; 111 uint8_t buf[3]; 112 uint32_t cur_reg; 113 int pos; 114 } ZipitLCD; 115 116 static uint32_t zipit_lcd_transfer(SSISlave *dev, uint32_t value) 117 { 118 ZipitLCD *z = FROM_SSI_SLAVE(ZipitLCD, dev); 119 uint16_t val; 120 if (z->selected) { 121 z->buf[z->pos] = value & 0xff; 122 z->pos++; 123 } 124 if (z->pos == 3) { 125 switch (z->buf[0]) { 126 case 0x74: 127 DPRINTF("%s: reg: 0x%.2x\n", __func__, z->buf[2]); 128 z->cur_reg = z->buf[2]; 129 break; 130 case 0x76: 131 val = z->buf[1] << 8 | z->buf[2]; 132 DPRINTF("%s: value: 0x%.4x\n", __func__, val); 133 if (z->cur_reg == 0x22 && val == 0x0000) { 134 z->enabled = 1; 135 printf("%s: LCD enabled\n", __func__); 136 } else if (z->cur_reg == 0x10 && val == 0x0000) { 137 z->enabled = 0; 138 printf("%s: LCD disabled\n", __func__); 139 } 140 break; 141 default: 142 DPRINTF("%s: unknown command!\n", __func__); 143 break; 144 } 145 z->pos = 0; 146 } 147 return 0; 148 } 149 150 static void z2_lcd_cs(void *opaque, int line, int level) 151 { 152 ZipitLCD *z2_lcd = opaque; 153 z2_lcd->selected = !level; 154 } 155 156 static void zipit_lcd_realize(SSISlave *dev, Error **errp) 157 { 158 ZipitLCD *z = FROM_SSI_SLAVE(ZipitLCD, dev); 159 z->selected = 0; 160 z->enabled = 0; 161 z->pos = 0; 162 } 163 164 static VMStateDescription vmstate_zipit_lcd_state = { 165 .name = "zipit-lcd", 166 .version_id = 2, 167 .minimum_version_id = 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->realize = zipit_lcd_realize; 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 int 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 return 0; 245 } 246 247 static int aer915_recv(I2CSlave *slave) 248 { 249 AER915State *s = AER915(slave); 250 int retval = 0x00; 251 252 switch (s->buf[0]) { 253 /* Return hardcoded battery voltage, 254 * 0xf0 means ~4.1V 255 */ 256 case 0x02: 257 retval = 0xf0; 258 break; 259 /* Return 0x00 for other regs, 260 * we don't know what they are for, 261 * anyway they return 0x00 on real hardware. 262 */ 263 default: 264 break; 265 } 266 267 return retval; 268 } 269 270 static VMStateDescription vmstate_aer915_state = { 271 .name = "aer915", 272 .version_id = 1, 273 .minimum_version_id = 1, 274 .fields = (VMStateField[]) { 275 VMSTATE_INT32(len, AER915State), 276 VMSTATE_BUFFER(buf, AER915State), 277 VMSTATE_END_OF_LIST(), 278 } 279 }; 280 281 static void aer915_class_init(ObjectClass *klass, void *data) 282 { 283 DeviceClass *dc = DEVICE_CLASS(klass); 284 I2CSlaveClass *k = I2C_SLAVE_CLASS(klass); 285 286 k->event = aer915_event; 287 k->recv = aer915_recv; 288 k->send = aer915_send; 289 dc->vmsd = &vmstate_aer915_state; 290 } 291 292 static const TypeInfo aer915_info = { 293 .name = TYPE_AER915, 294 .parent = TYPE_I2C_SLAVE, 295 .instance_size = sizeof(AER915State), 296 .class_init = aer915_class_init, 297 }; 298 299 static void z2_init(MachineState *machine) 300 { 301 const char *kernel_filename = machine->kernel_filename; 302 const char *kernel_cmdline = machine->kernel_cmdline; 303 const char *initrd_filename = machine->initrd_filename; 304 MemoryRegion *address_space_mem = get_system_memory(); 305 uint32_t sector_len = 0x10000; 306 PXA2xxState *mpu; 307 DriveInfo *dinfo; 308 int be; 309 void *z2_lcd; 310 I2CBus *bus; 311 DeviceState *wm; 312 313 /* Setup CPU & memory */ 314 mpu = pxa270_init(address_space_mem, z2_binfo.ram_size, machine->cpu_type); 315 316 #ifdef TARGET_WORDS_BIGENDIAN 317 be = 1; 318 #else 319 be = 0; 320 #endif 321 dinfo = drive_get(IF_PFLASH, 0, 0); 322 if (!dinfo && !qtest_enabled()) { 323 error_report("Flash image must be given with the " 324 "'pflash' parameter"); 325 exit(1); 326 } 327 328 if (!pflash_cfi01_register(Z2_FLASH_BASE, 329 NULL, "z2.flash0", Z2_FLASH_SIZE, 330 dinfo ? blk_by_legacy_dinfo(dinfo) : NULL, 331 sector_len, Z2_FLASH_SIZE / sector_len, 332 4, 0, 0, 0, 0, be)) { 333 error_report("Error registering flash memory"); 334 exit(1); 335 } 336 337 /* setup keypad */ 338 pxa27x_register_keypad(mpu->kp, map, 0x100); 339 340 /* MMC/SD host */ 341 pxa2xx_mmci_handlers(mpu->mmc, 342 NULL, 343 qdev_get_gpio_in(mpu->gpio, Z2_GPIO_SD_DETECT)); 344 345 type_register_static(&zipit_lcd_info); 346 type_register_static(&aer915_info); 347 z2_lcd = ssi_create_slave(mpu->ssp[1], "zipit-lcd"); 348 bus = pxa2xx_i2c_bus(mpu->i2c[0]); 349 i2c_create_slave(bus, TYPE_AER915, 0x55); 350 wm = i2c_create_slave(bus, TYPE_WM8750, 0x1b); 351 mpu->i2s->opaque = wm; 352 mpu->i2s->codec_out = wm8750_dac_dat; 353 mpu->i2s->codec_in = wm8750_adc_dat; 354 wm8750_data_req_set(wm, mpu->i2s->data_req, mpu->i2s); 355 356 qdev_connect_gpio_out(mpu->gpio, Z2_GPIO_LCD_CS, 357 qemu_allocate_irq(z2_lcd_cs, z2_lcd, 0)); 358 359 z2_binfo.kernel_filename = kernel_filename; 360 z2_binfo.kernel_cmdline = kernel_cmdline; 361 z2_binfo.initrd_filename = initrd_filename; 362 z2_binfo.board_id = 0x6dd; 363 arm_load_kernel(mpu->cpu, &z2_binfo); 364 } 365 366 static void z2_machine_init(MachineClass *mc) 367 { 368 mc->desc = "Zipit Z2 (PXA27x)"; 369 mc->init = z2_init; 370 mc->ignore_memory_transaction_failures = true; 371 mc->default_cpu_type = ARM_CPU_TYPE_NAME("pxa270-c5"); 372 } 373 374 DEFINE_MACHINE("z2", z2_machine_init) 375