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 30 #ifdef DEBUG_Z2 31 #define DPRINTF(fmt, ...) \ 32 printf(fmt, ## __VA_ARGS__) 33 #else 34 #define DPRINTF(fmt, ...) 35 #endif 36 37 static const struct keymap map[0x100] = { 38 [0 ... 0xff] = { -1, -1 }, 39 [0x3b] = {0, 0}, /* Option = F1 */ 40 [0xc8] = {0, 1}, /* Up */ 41 [0xd0] = {0, 2}, /* Down */ 42 [0xcb] = {0, 3}, /* Left */ 43 [0xcd] = {0, 4}, /* Right */ 44 [0xcf] = {0, 5}, /* End */ 45 [0x0d] = {0, 6}, /* KPPLUS */ 46 [0xc7] = {1, 0}, /* Home */ 47 [0x10] = {1, 1}, /* Q */ 48 [0x17] = {1, 2}, /* I */ 49 [0x22] = {1, 3}, /* G */ 50 [0x2d] = {1, 4}, /* X */ 51 [0x1c] = {1, 5}, /* Enter */ 52 [0x0c] = {1, 6}, /* KPMINUS */ 53 [0xc9] = {2, 0}, /* PageUp */ 54 [0x11] = {2, 1}, /* W */ 55 [0x18] = {2, 2}, /* O */ 56 [0x23] = {2, 3}, /* H */ 57 [0x2e] = {2, 4}, /* C */ 58 [0x38] = {2, 5}, /* LeftAlt */ 59 [0xd1] = {3, 0}, /* PageDown */ 60 [0x12] = {3, 1}, /* E */ 61 [0x19] = {3, 2}, /* P */ 62 [0x24] = {3, 3}, /* J */ 63 [0x2f] = {3, 4}, /* V */ 64 [0x2a] = {3, 5}, /* LeftShift */ 65 [0x01] = {4, 0}, /* Esc */ 66 [0x13] = {4, 1}, /* R */ 67 [0x1e] = {4, 2}, /* A */ 68 [0x25] = {4, 3}, /* K */ 69 [0x30] = {4, 4}, /* B */ 70 [0x1d] = {4, 5}, /* LeftCtrl */ 71 [0x0f] = {5, 0}, /* Tab */ 72 [0x14] = {5, 1}, /* T */ 73 [0x1f] = {5, 2}, /* S */ 74 [0x26] = {5, 3}, /* L */ 75 [0x31] = {5, 4}, /* N */ 76 [0x39] = {5, 5}, /* Space */ 77 [0x3c] = {6, 0}, /* Stop = F2 */ 78 [0x15] = {6, 1}, /* Y */ 79 [0x20] = {6, 2}, /* D */ 80 [0x0e] = {6, 3}, /* Backspace */ 81 [0x32] = {6, 4}, /* M */ 82 [0x33] = {6, 5}, /* Comma */ 83 [0x3d] = {7, 0}, /* Play = F3 */ 84 [0x16] = {7, 1}, /* U */ 85 [0x21] = {7, 2}, /* F */ 86 [0x2c] = {7, 3}, /* Z */ 87 [0x27] = {7, 4}, /* Semicolon */ 88 [0x34] = {7, 5}, /* Dot */ 89 }; 90 91 #define Z2_RAM_SIZE 0x02000000 92 #define Z2_FLASH_BASE 0x00000000 93 #define Z2_FLASH_SIZE 0x00800000 94 95 static struct arm_boot_info z2_binfo = { 96 .loader_start = PXA2XX_SDRAM_BASE, 97 .ram_size = Z2_RAM_SIZE, 98 }; 99 100 #define Z2_GPIO_SD_DETECT 96 101 #define Z2_GPIO_AC_IN 0 102 #define Z2_GPIO_KEY_ON 1 103 #define Z2_GPIO_LCD_CS 88 104 105 typedef struct { 106 SSISlave ssidev; 107 int32_t selected; 108 int32_t enabled; 109 uint8_t buf[3]; 110 uint32_t cur_reg; 111 int pos; 112 } ZipitLCD; 113 114 static uint32_t zipit_lcd_transfer(SSISlave *dev, uint32_t value) 115 { 116 ZipitLCD *z = FROM_SSI_SLAVE(ZipitLCD, dev); 117 uint16_t val; 118 if (z->selected) { 119 z->buf[z->pos] = value & 0xff; 120 z->pos++; 121 } 122 if (z->pos == 3) { 123 switch (z->buf[0]) { 124 case 0x74: 125 DPRINTF("%s: reg: 0x%.2x\n", __func__, z->buf[2]); 126 z->cur_reg = z->buf[2]; 127 break; 128 case 0x76: 129 val = z->buf[1] << 8 | z->buf[2]; 130 DPRINTF("%s: value: 0x%.4x\n", __func__, val); 131 if (z->cur_reg == 0x22 && val == 0x0000) { 132 z->enabled = 1; 133 printf("%s: LCD enabled\n", __func__); 134 } else if (z->cur_reg == 0x10 && val == 0x0000) { 135 z->enabled = 0; 136 printf("%s: LCD disabled\n", __func__); 137 } 138 break; 139 default: 140 DPRINTF("%s: unknown command!\n", __func__); 141 break; 142 } 143 z->pos = 0; 144 } 145 return 0; 146 } 147 148 static void z2_lcd_cs(void *opaque, int line, int level) 149 { 150 ZipitLCD *z2_lcd = opaque; 151 z2_lcd->selected = !level; 152 } 153 154 static void zipit_lcd_realize(SSISlave *dev, Error **errp) 155 { 156 ZipitLCD *z = FROM_SSI_SLAVE(ZipitLCD, dev); 157 z->selected = 0; 158 z->enabled = 0; 159 z->pos = 0; 160 } 161 162 static VMStateDescription vmstate_zipit_lcd_state = { 163 .name = "zipit-lcd", 164 .version_id = 2, 165 .minimum_version_id = 2, 166 .fields = (VMStateField[]) { 167 VMSTATE_SSI_SLAVE(ssidev, ZipitLCD), 168 VMSTATE_INT32(selected, ZipitLCD), 169 VMSTATE_INT32(enabled, ZipitLCD), 170 VMSTATE_BUFFER(buf, ZipitLCD), 171 VMSTATE_UINT32(cur_reg, ZipitLCD), 172 VMSTATE_INT32(pos, ZipitLCD), 173 VMSTATE_END_OF_LIST(), 174 } 175 }; 176 177 static void zipit_lcd_class_init(ObjectClass *klass, void *data) 178 { 179 DeviceClass *dc = DEVICE_CLASS(klass); 180 SSISlaveClass *k = SSI_SLAVE_CLASS(klass); 181 182 k->realize = zipit_lcd_realize; 183 k->transfer = zipit_lcd_transfer; 184 dc->vmsd = &vmstate_zipit_lcd_state; 185 } 186 187 static const TypeInfo zipit_lcd_info = { 188 .name = "zipit-lcd", 189 .parent = TYPE_SSI_SLAVE, 190 .instance_size = sizeof(ZipitLCD), 191 .class_init = zipit_lcd_class_init, 192 }; 193 194 #define TYPE_AER915 "aer915" 195 #define AER915(obj) OBJECT_CHECK(AER915State, (obj), TYPE_AER915) 196 197 typedef struct AER915State { 198 I2CSlave parent_obj; 199 200 int len; 201 uint8_t buf[3]; 202 } AER915State; 203 204 static int aer915_send(I2CSlave *i2c, uint8_t data) 205 { 206 AER915State *s = AER915(i2c); 207 208 s->buf[s->len] = data; 209 if (s->len++ > 2) { 210 DPRINTF("%s: message too long (%i bytes)\n", 211 __func__, s->len); 212 return 1; 213 } 214 215 if (s->len == 2) { 216 DPRINTF("%s: reg %d value 0x%02x\n", __func__, 217 s->buf[0], s->buf[1]); 218 } 219 220 return 0; 221 } 222 223 static int aer915_event(I2CSlave *i2c, enum i2c_event event) 224 { 225 AER915State *s = AER915(i2c); 226 227 switch (event) { 228 case I2C_START_SEND: 229 s->len = 0; 230 break; 231 case I2C_START_RECV: 232 if (s->len != 1) { 233 DPRINTF("%s: short message!?\n", __func__); 234 } 235 break; 236 case I2C_FINISH: 237 break; 238 default: 239 break; 240 } 241 242 return 0; 243 } 244 245 static uint8_t 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 VMStateDescription vmstate_aer915_state = { 269 .name = "aer915", 270 .version_id = 1, 271 .minimum_version_id = 1, 272 .fields = (VMStateField[]) { 273 VMSTATE_INT32(len, AER915State), 274 VMSTATE_BUFFER(buf, AER915State), 275 VMSTATE_END_OF_LIST(), 276 } 277 }; 278 279 static void aer915_class_init(ObjectClass *klass, void *data) 280 { 281 DeviceClass *dc = DEVICE_CLASS(klass); 282 I2CSlaveClass *k = I2C_SLAVE_CLASS(klass); 283 284 k->event = aer915_event; 285 k->recv = aer915_recv; 286 k->send = aer915_send; 287 dc->vmsd = &vmstate_aer915_state; 288 } 289 290 static const TypeInfo aer915_info = { 291 .name = TYPE_AER915, 292 .parent = TYPE_I2C_SLAVE, 293 .instance_size = sizeof(AER915State), 294 .class_init = aer915_class_init, 295 }; 296 297 static void z2_init(MachineState *machine) 298 { 299 const char *kernel_filename = machine->kernel_filename; 300 const char *kernel_cmdline = machine->kernel_cmdline; 301 const char *initrd_filename = machine->initrd_filename; 302 MemoryRegion *address_space_mem = get_system_memory(); 303 uint32_t sector_len = 0x10000; 304 PXA2xxState *mpu; 305 DriveInfo *dinfo; 306 int be; 307 void *z2_lcd; 308 I2CBus *bus; 309 DeviceState *wm; 310 311 /* Setup CPU & memory */ 312 mpu = pxa270_init(address_space_mem, z2_binfo.ram_size, machine->cpu_type); 313 314 #ifdef TARGET_WORDS_BIGENDIAN 315 be = 1; 316 #else 317 be = 0; 318 #endif 319 dinfo = drive_get(IF_PFLASH, 0, 0); 320 if (!dinfo && !qtest_enabled()) { 321 error_report("Flash image must be given with the " 322 "'pflash' parameter"); 323 exit(1); 324 } 325 326 if (!pflash_cfi01_register(Z2_FLASH_BASE, "z2.flash0", Z2_FLASH_SIZE, 327 dinfo ? blk_by_legacy_dinfo(dinfo) : NULL, 328 sector_len, 4, 0, 0, 0, 0, be)) { 329 error_report("Error registering flash memory"); 330 exit(1); 331 } 332 333 /* setup keypad */ 334 pxa27x_register_keypad(mpu->kp, map, 0x100); 335 336 /* MMC/SD host */ 337 pxa2xx_mmci_handlers(mpu->mmc, 338 NULL, 339 qdev_get_gpio_in(mpu->gpio, Z2_GPIO_SD_DETECT)); 340 341 type_register_static(&zipit_lcd_info); 342 type_register_static(&aer915_info); 343 z2_lcd = ssi_create_slave(mpu->ssp[1], "zipit-lcd"); 344 bus = pxa2xx_i2c_bus(mpu->i2c[0]); 345 i2c_create_slave(bus, TYPE_AER915, 0x55); 346 wm = i2c_create_slave(bus, TYPE_WM8750, 0x1b); 347 mpu->i2s->opaque = wm; 348 mpu->i2s->codec_out = wm8750_dac_dat; 349 mpu->i2s->codec_in = wm8750_adc_dat; 350 wm8750_data_req_set(wm, mpu->i2s->data_req, mpu->i2s); 351 352 qdev_connect_gpio_out(mpu->gpio, Z2_GPIO_LCD_CS, 353 qemu_allocate_irq(z2_lcd_cs, z2_lcd, 0)); 354 355 z2_binfo.kernel_filename = kernel_filename; 356 z2_binfo.kernel_cmdline = kernel_cmdline; 357 z2_binfo.initrd_filename = initrd_filename; 358 z2_binfo.board_id = 0x6dd; 359 arm_load_kernel(mpu->cpu, &z2_binfo); 360 } 361 362 static void z2_machine_init(MachineClass *mc) 363 { 364 mc->desc = "Zipit Z2 (PXA27x)"; 365 mc->init = z2_init; 366 mc->ignore_memory_transaction_failures = true; 367 mc->default_cpu_type = ARM_CPU_TYPE_NAME("pxa270-c5"); 368 } 369 370 DEFINE_MACHINE("z2", z2_machine_init) 371