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 "ui/console.h" 25 #include "hw/audio/wm8750.h" 26 #include "audio/audio.h" 27 #include "exec/address-spaces.h" 28 #include "sysemu/qtest.h" 29 #include "cpu.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 typedef struct { 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 } ZipitLCD; 114 115 static uint32_t zipit_lcd_transfer(SSISlave *dev, uint32_t value) 116 { 117 ZipitLCD *z = FROM_SSI_SLAVE(ZipitLCD, dev); 118 uint16_t val; 119 if (z->selected) { 120 z->buf[z->pos] = value & 0xff; 121 z->pos++; 122 } 123 if (z->pos == 3) { 124 switch (z->buf[0]) { 125 case 0x74: 126 DPRINTF("%s: reg: 0x%.2x\n", __func__, z->buf[2]); 127 z->cur_reg = z->buf[2]; 128 break; 129 case 0x76: 130 val = z->buf[1] << 8 | z->buf[2]; 131 DPRINTF("%s: value: 0x%.4x\n", __func__, val); 132 if (z->cur_reg == 0x22 && val == 0x0000) { 133 z->enabled = 1; 134 printf("%s: LCD enabled\n", __func__); 135 } else if (z->cur_reg == 0x10 && val == 0x0000) { 136 z->enabled = 0; 137 printf("%s: LCD disabled\n", __func__); 138 } 139 break; 140 default: 141 DPRINTF("%s: unknown command!\n", __func__); 142 break; 143 } 144 z->pos = 0; 145 } 146 return 0; 147 } 148 149 static void z2_lcd_cs(void *opaque, int line, int level) 150 { 151 ZipitLCD *z2_lcd = opaque; 152 z2_lcd->selected = !level; 153 } 154 155 static void zipit_lcd_realize(SSISlave *dev, Error **errp) 156 { 157 ZipitLCD *z = FROM_SSI_SLAVE(ZipitLCD, dev); 158 z->selected = 0; 159 z->enabled = 0; 160 z->pos = 0; 161 } 162 163 static VMStateDescription vmstate_zipit_lcd_state = { 164 .name = "zipit-lcd", 165 .version_id = 2, 166 .minimum_version_id = 2, 167 .fields = (VMStateField[]) { 168 VMSTATE_SSI_SLAVE(ssidev, ZipitLCD), 169 VMSTATE_INT32(selected, ZipitLCD), 170 VMSTATE_INT32(enabled, ZipitLCD), 171 VMSTATE_BUFFER(buf, ZipitLCD), 172 VMSTATE_UINT32(cur_reg, ZipitLCD), 173 VMSTATE_INT32(pos, ZipitLCD), 174 VMSTATE_END_OF_LIST(), 175 } 176 }; 177 178 static void zipit_lcd_class_init(ObjectClass *klass, void *data) 179 { 180 DeviceClass *dc = DEVICE_CLASS(klass); 181 SSISlaveClass *k = SSI_SLAVE_CLASS(klass); 182 183 k->realize = zipit_lcd_realize; 184 k->transfer = zipit_lcd_transfer; 185 dc->vmsd = &vmstate_zipit_lcd_state; 186 } 187 188 static const TypeInfo zipit_lcd_info = { 189 .name = "zipit-lcd", 190 .parent = TYPE_SSI_SLAVE, 191 .instance_size = sizeof(ZipitLCD), 192 .class_init = zipit_lcd_class_init, 193 }; 194 195 #define TYPE_AER915 "aer915" 196 #define AER915(obj) OBJECT_CHECK(AER915State, (obj), TYPE_AER915) 197 198 typedef struct AER915State { 199 I2CSlave parent_obj; 200 201 int len; 202 uint8_t buf[3]; 203 } AER915State; 204 205 static int aer915_send(I2CSlave *i2c, uint8_t data) 206 { 207 AER915State *s = AER915(i2c); 208 209 s->buf[s->len] = data; 210 if (s->len++ > 2) { 211 DPRINTF("%s: message too long (%i bytes)\n", 212 __func__, s->len); 213 return 1; 214 } 215 216 if (s->len == 2) { 217 DPRINTF("%s: reg %d value 0x%02x\n", __func__, 218 s->buf[0], s->buf[1]); 219 } 220 221 return 0; 222 } 223 224 static int aer915_event(I2CSlave *i2c, enum i2c_event event) 225 { 226 AER915State *s = AER915(i2c); 227 228 switch (event) { 229 case I2C_START_SEND: 230 s->len = 0; 231 break; 232 case I2C_START_RECV: 233 if (s->len != 1) { 234 DPRINTF("%s: short message!?\n", __func__); 235 } 236 break; 237 case I2C_FINISH: 238 break; 239 default: 240 break; 241 } 242 243 return 0; 244 } 245 246 static int aer915_recv(I2CSlave *slave) 247 { 248 AER915State *s = AER915(slave); 249 int retval = 0x00; 250 251 switch (s->buf[0]) { 252 /* Return hardcoded battery voltage, 253 * 0xf0 means ~4.1V 254 */ 255 case 0x02: 256 retval = 0xf0; 257 break; 258 /* Return 0x00 for other regs, 259 * we don't know what they are for, 260 * anyway they return 0x00 on real hardware. 261 */ 262 default: 263 break; 264 } 265 266 return retval; 267 } 268 269 static VMStateDescription vmstate_aer915_state = { 270 .name = "aer915", 271 .version_id = 1, 272 .minimum_version_id = 1, 273 .fields = (VMStateField[]) { 274 VMSTATE_INT32(len, AER915State), 275 VMSTATE_BUFFER(buf, AER915State), 276 VMSTATE_END_OF_LIST(), 277 } 278 }; 279 280 static void aer915_class_init(ObjectClass *klass, void *data) 281 { 282 DeviceClass *dc = DEVICE_CLASS(klass); 283 I2CSlaveClass *k = I2C_SLAVE_CLASS(klass); 284 285 k->event = aer915_event; 286 k->recv = aer915_recv; 287 k->send = aer915_send; 288 dc->vmsd = &vmstate_aer915_state; 289 } 290 291 static const TypeInfo aer915_info = { 292 .name = TYPE_AER915, 293 .parent = TYPE_I2C_SLAVE, 294 .instance_size = sizeof(AER915State), 295 .class_init = aer915_class_init, 296 }; 297 298 static void z2_init(MachineState *machine) 299 { 300 const char *kernel_filename = machine->kernel_filename; 301 const char *kernel_cmdline = machine->kernel_cmdline; 302 const char *initrd_filename = machine->initrd_filename; 303 MemoryRegion *address_space_mem = get_system_memory(); 304 uint32_t sector_len = 0x10000; 305 PXA2xxState *mpu; 306 DriveInfo *dinfo; 307 int be; 308 void *z2_lcd; 309 I2CBus *bus; 310 DeviceState *wm; 311 312 /* Setup CPU & memory */ 313 mpu = pxa270_init(address_space_mem, z2_binfo.ram_size, machine->cpu_type); 314 315 #ifdef TARGET_WORDS_BIGENDIAN 316 be = 1; 317 #else 318 be = 0; 319 #endif 320 dinfo = drive_get(IF_PFLASH, 0, 0); 321 if (!dinfo && !qtest_enabled()) { 322 error_report("Flash image must be given with the " 323 "'pflash' parameter"); 324 exit(1); 325 } 326 327 if (!pflash_cfi01_register(Z2_FLASH_BASE, 328 NULL, "z2.flash0", Z2_FLASH_SIZE, 329 dinfo ? blk_by_legacy_dinfo(dinfo) : NULL, 330 sector_len, Z2_FLASH_SIZE / sector_len, 331 4, 0, 0, 0, 0, be)) { 332 error_report("Error registering flash memory"); 333 exit(1); 334 } 335 336 /* setup keypad */ 337 pxa27x_register_keypad(mpu->kp, map, 0x100); 338 339 /* MMC/SD host */ 340 pxa2xx_mmci_handlers(mpu->mmc, 341 NULL, 342 qdev_get_gpio_in(mpu->gpio, Z2_GPIO_SD_DETECT)); 343 344 type_register_static(&zipit_lcd_info); 345 type_register_static(&aer915_info); 346 z2_lcd = ssi_create_slave(mpu->ssp[1], "zipit-lcd"); 347 bus = pxa2xx_i2c_bus(mpu->i2c[0]); 348 i2c_create_slave(bus, TYPE_AER915, 0x55); 349 wm = i2c_create_slave(bus, TYPE_WM8750, 0x1b); 350 mpu->i2s->opaque = wm; 351 mpu->i2s->codec_out = wm8750_dac_dat; 352 mpu->i2s->codec_in = wm8750_adc_dat; 353 wm8750_data_req_set(wm, mpu->i2s->data_req, mpu->i2s); 354 355 qdev_connect_gpio_out(mpu->gpio, Z2_GPIO_LCD_CS, 356 qemu_allocate_irq(z2_lcd_cs, z2_lcd, 0)); 357 358 z2_binfo.kernel_filename = kernel_filename; 359 z2_binfo.kernel_cmdline = kernel_cmdline; 360 z2_binfo.initrd_filename = initrd_filename; 361 z2_binfo.board_id = 0x6dd; 362 arm_load_kernel(mpu->cpu, &z2_binfo); 363 } 364 365 static void z2_machine_init(MachineClass *mc) 366 { 367 mc->desc = "Zipit Z2 (PXA27x)"; 368 mc->init = z2_init; 369 mc->ignore_memory_transaction_failures = true; 370 mc->default_cpu_type = ARM_CPU_TYPE_NAME("pxa270-c5"); 371 } 372 373 DEFINE_MACHINE("z2", z2_machine_init) 374