z2.c (9276B)
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 "cpu.h" 28 #include "qom/object.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 struct ZipitLCD { 106 SSIPeripheral ssidev; 107 int32_t selected; 108 int32_t enabled; 109 uint8_t buf[3]; 110 uint32_t cur_reg; 111 int pos; 112 }; 113 114 #define TYPE_ZIPIT_LCD "zipit-lcd" 115 OBJECT_DECLARE_SIMPLE_TYPE(ZipitLCD, ZIPIT_LCD) 116 117 static uint32_t zipit_lcd_transfer(SSIPeripheral *dev, uint32_t value) 118 { 119 ZipitLCD *z = ZIPIT_LCD(dev); 120 uint16_t val; 121 if (z->selected) { 122 z->buf[z->pos] = value & 0xff; 123 z->pos++; 124 } 125 if (z->pos == 3) { 126 switch (z->buf[0]) { 127 case 0x74: 128 DPRINTF("%s: reg: 0x%.2x\n", __func__, z->buf[2]); 129 z->cur_reg = z->buf[2]; 130 break; 131 case 0x76: 132 val = z->buf[1] << 8 | z->buf[2]; 133 DPRINTF("%s: value: 0x%.4x\n", __func__, val); 134 if (z->cur_reg == 0x22 && val == 0x0000) { 135 z->enabled = 1; 136 printf("%s: LCD enabled\n", __func__); 137 } else if (z->cur_reg == 0x10 && val == 0x0000) { 138 z->enabled = 0; 139 printf("%s: LCD disabled\n", __func__); 140 } 141 break; 142 default: 143 DPRINTF("%s: unknown command!\n", __func__); 144 break; 145 } 146 z->pos = 0; 147 } 148 return 0; 149 } 150 151 static void z2_lcd_cs(void *opaque, int line, int level) 152 { 153 ZipitLCD *z2_lcd = opaque; 154 z2_lcd->selected = !level; 155 } 156 157 static void zipit_lcd_realize(SSIPeripheral *dev, Error **errp) 158 { 159 ZipitLCD *z = ZIPIT_LCD(dev); 160 z->selected = 0; 161 z->enabled = 0; 162 z->pos = 0; 163 } 164 165 static const VMStateDescription vmstate_zipit_lcd_state = { 166 .name = "zipit-lcd", 167 .version_id = 2, 168 .minimum_version_id = 2, 169 .fields = (VMStateField[]) { 170 VMSTATE_SSI_PERIPHERAL(ssidev, ZipitLCD), 171 VMSTATE_INT32(selected, ZipitLCD), 172 VMSTATE_INT32(enabled, ZipitLCD), 173 VMSTATE_BUFFER(buf, ZipitLCD), 174 VMSTATE_UINT32(cur_reg, ZipitLCD), 175 VMSTATE_INT32(pos, ZipitLCD), 176 VMSTATE_END_OF_LIST(), 177 } 178 }; 179 180 static void zipit_lcd_class_init(ObjectClass *klass, void *data) 181 { 182 DeviceClass *dc = DEVICE_CLASS(klass); 183 SSIPeripheralClass *k = SSI_PERIPHERAL_CLASS(klass); 184 185 k->realize = zipit_lcd_realize; 186 k->transfer = zipit_lcd_transfer; 187 dc->vmsd = &vmstate_zipit_lcd_state; 188 } 189 190 static const TypeInfo zipit_lcd_info = { 191 .name = TYPE_ZIPIT_LCD, 192 .parent = TYPE_SSI_PERIPHERAL, 193 .instance_size = sizeof(ZipitLCD), 194 .class_init = zipit_lcd_class_init, 195 }; 196 197 #define TYPE_AER915 "aer915" 198 OBJECT_DECLARE_SIMPLE_TYPE(AER915State, AER915) 199 200 struct AER915State { 201 I2CSlave parent_obj; 202 203 int len; 204 uint8_t buf[3]; 205 }; 206 207 static int aer915_send(I2CSlave *i2c, uint8_t data) 208 { 209 AER915State *s = AER915(i2c); 210 211 s->buf[s->len] = data; 212 if (s->len++ > 2) { 213 DPRINTF("%s: message too long (%i bytes)\n", 214 __func__, s->len); 215 return 1; 216 } 217 218 if (s->len == 2) { 219 DPRINTF("%s: reg %d value 0x%02x\n", __func__, 220 s->buf[0], s->buf[1]); 221 } 222 223 return 0; 224 } 225 226 static int aer915_event(I2CSlave *i2c, enum i2c_event event) 227 { 228 AER915State *s = AER915(i2c); 229 230 switch (event) { 231 case I2C_START_SEND: 232 s->len = 0; 233 break; 234 case I2C_START_RECV: 235 if (s->len != 1) { 236 DPRINTF("%s: short message!?\n", __func__); 237 } 238 break; 239 case I2C_FINISH: 240 break; 241 default: 242 break; 243 } 244 245 return 0; 246 } 247 248 static uint8_t aer915_recv(I2CSlave *slave) 249 { 250 AER915State *s = AER915(slave); 251 int retval = 0x00; 252 253 switch (s->buf[0]) { 254 /* Return hardcoded battery voltage, 255 * 0xf0 means ~4.1V 256 */ 257 case 0x02: 258 retval = 0xf0; 259 break; 260 /* Return 0x00 for other regs, 261 * we don't know what they are for, 262 * anyway they return 0x00 on real hardware. 263 */ 264 default: 265 break; 266 } 267 268 return retval; 269 } 270 271 static const VMStateDescription vmstate_aer915_state = { 272 .name = "aer915", 273 .version_id = 1, 274 .minimum_version_id = 1, 275 .fields = (VMStateField[]) { 276 VMSTATE_INT32(len, AER915State), 277 VMSTATE_BUFFER(buf, AER915State), 278 VMSTATE_END_OF_LIST(), 279 } 280 }; 281 282 static void aer915_class_init(ObjectClass *klass, void *data) 283 { 284 DeviceClass *dc = DEVICE_CLASS(klass); 285 I2CSlaveClass *k = I2C_SLAVE_CLASS(klass); 286 287 k->event = aer915_event; 288 k->recv = aer915_recv; 289 k->send = aer915_send; 290 dc->vmsd = &vmstate_aer915_state; 291 } 292 293 static const TypeInfo aer915_info = { 294 .name = TYPE_AER915, 295 .parent = TYPE_I2C_SLAVE, 296 .instance_size = sizeof(AER915State), 297 .class_init = aer915_class_init, 298 }; 299 300 static void z2_init(MachineState *machine) 301 { 302 MemoryRegion *address_space_mem = get_system_memory(); 303 uint32_t sector_len = 0x10000; 304 PXA2xxState *mpu; 305 DriveInfo *dinfo; 306 void *z2_lcd; 307 I2CBus *bus; 308 DeviceState *wm; 309 310 /* Setup CPU & memory */ 311 mpu = pxa270_init(address_space_mem, z2_binfo.ram_size, machine->cpu_type); 312 313 dinfo = drive_get(IF_PFLASH, 0, 0); 314 if (!pflash_cfi01_register(Z2_FLASH_BASE, "z2.flash0", Z2_FLASH_SIZE, 315 dinfo ? blk_by_legacy_dinfo(dinfo) : NULL, 316 sector_len, 4, 0, 0, 0, 0, 0)) { 317 error_report("Error registering flash memory"); 318 exit(1); 319 } 320 321 /* setup keypad */ 322 pxa27x_register_keypad(mpu->kp, map, 0x100); 323 324 /* MMC/SD host */ 325 pxa2xx_mmci_handlers(mpu->mmc, 326 NULL, 327 qdev_get_gpio_in(mpu->gpio, Z2_GPIO_SD_DETECT)); 328 329 type_register_static(&zipit_lcd_info); 330 type_register_static(&aer915_info); 331 z2_lcd = ssi_create_peripheral(mpu->ssp[1], TYPE_ZIPIT_LCD); 332 bus = pxa2xx_i2c_bus(mpu->i2c[0]); 333 i2c_slave_create_simple(bus, TYPE_AER915, 0x55); 334 wm = DEVICE(i2c_slave_create_simple(bus, TYPE_WM8750, 0x1b)); 335 mpu->i2s->opaque = wm; 336 mpu->i2s->codec_out = wm8750_dac_dat; 337 mpu->i2s->codec_in = wm8750_adc_dat; 338 wm8750_data_req_set(wm, mpu->i2s->data_req, mpu->i2s); 339 340 qdev_connect_gpio_out(mpu->gpio, Z2_GPIO_LCD_CS, 341 qemu_allocate_irq(z2_lcd_cs, z2_lcd, 0)); 342 343 z2_binfo.board_id = 0x6dd; 344 arm_load_kernel(mpu->cpu, machine, &z2_binfo); 345 } 346 347 static void z2_machine_init(MachineClass *mc) 348 { 349 mc->desc = "Zipit Z2 (PXA27x)"; 350 mc->init = z2_init; 351 mc->ignore_memory_transaction_failures = true; 352 mc->default_cpu_type = ARM_CPU_TYPE_NAME("pxa270-c5"); 353 } 354 355 DEFINE_MACHINE("z2", z2_machine_init)