hw/arm/tosa.c

   1 /* vim:set shiftwidth=4 ts=4 et: */
   2 /*
   3  * PXA255 Sharp Zaurus SL-6000 PDA platform
   4  *
   5  * Copyright (c) 2008 Dmitry Baryshkov
   6  *
   7  * Code based on spitz platform by Andrzej Zaborowski <balrog@zabor.org>
   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 "qapi/error.h"
  16 #include "sysemu/runstate.h"
  17 #include "hw/arm/pxa.h"
  18 #include "hw/arm/boot.h"
  19 #include "hw/arm/sharpsl.h"
  20 #include "hw/pcmcia.h"
  21 #include "hw/boards.h"
  22 #include "hw/display/tc6393xb.h"
  23 #include "hw/i2c/i2c.h"
  24 #include "hw/irq.h"
  25 #include "hw/ssi/ssi.h"
  26 #include "hw/sysbus.h"
  27 #include "exec/address-spaces.h"
  28
  29 #define TOSA_RAM 0x04000000
  30 #define TOSA_ROM 0x00800000
  31
  32 #define TOSA_GPIO_USB_IN                (5)
  33 #define TOSA_GPIO_nSD_DETECT            (9)
  34 #define TOSA_GPIO_ON_RESET              (19)
  35 #define TOSA_GPIO_CF_IRQ                (21)    /* CF slot0 Ready */
  36 #define TOSA_GPIO_CF_CD                 (13)
  37 #define TOSA_GPIO_TC6393XB_INT          (15)
  38 #define TOSA_GPIO_JC_CF_IRQ             (36)    /* CF slot1 Ready */
  39
  40 #define TOSA_SCOOP_GPIO_BASE            1
  41 #define TOSA_GPIO_IR_POWERDWN           (TOSA_SCOOP_GPIO_BASE + 2)
  42 #define TOSA_GPIO_SD_WP                 (TOSA_SCOOP_GPIO_BASE + 3)
  43 #define TOSA_GPIO_PWR_ON                (TOSA_SCOOP_GPIO_BASE + 4)
  44
  45 #define TOSA_SCOOP_JC_GPIO_BASE         1
  46 #define TOSA_GPIO_BT_LED                (TOSA_SCOOP_JC_GPIO_BASE + 0)
  47 #define TOSA_GPIO_NOTE_LED              (TOSA_SCOOP_JC_GPIO_BASE + 1)
  48 #define TOSA_GPIO_CHRG_ERR_LED          (TOSA_SCOOP_JC_GPIO_BASE + 2)
  49 #define TOSA_GPIO_TC6393XB_L3V_ON       (TOSA_SCOOP_JC_GPIO_BASE + 5)
  50 #define TOSA_GPIO_WLAN_LED              (TOSA_SCOOP_JC_GPIO_BASE + 7)
  51
  52 #define DAC_BASE 0x4e
  53 #define DAC_CH1 0
  54 #define DAC_CH2 1
  55
  56 static void tosa_microdrive_attach(PXA2xxState *cpu)
  57 {
  58     PCMCIACardState *md;
  59     DriveInfo *dinfo;
  60
  61     dinfo = drive_get(IF_IDE, 0, 0);
  62     if (!dinfo || dinfo->media_cd)
  63         return;
  64     md = dscm1xxxx_init(dinfo);
  65     pxa2xx_pcmcia_attach(cpu->pcmcia[0], md);
  66 }
  67
  68 /*
  69  * Encapsulation of some GPIO line behaviour for the Tosa board
  70  *
  71  * QEMU interface:
  72  *  + named GPIO inputs "leds[0..3]": assert to light LEDs
  73  *  + named GPIO input "reset": when asserted, resets the system
  74  */
  75
  76 #define TYPE_TOSA_MISC_GPIO "tosa-misc-gpio"
  77 #define TOSA_MISC_GPIO(obj) \
  78     OBJECT_CHECK(TosaMiscGPIOState, (obj), TYPE_TOSA_MISC_GPIO)
  79
  80 typedef struct TosaMiscGPIOState {
  81     SysBusDevice parent_obj;
  82 } TosaMiscGPIOState;
  83
  84 static void tosa_gpio_leds(void *opaque, int line, int level)
  85 {
  86     switch (line) {
  87     case 0:
  88         fprintf(stderr, "blue LED %s.\n", level ? "on" : "off");
  89         break;
  90     case 1:
  91         fprintf(stderr, "green LED %s.\n", level ? "on" : "off");
  92         break;
  93     case 2:
  94         fprintf(stderr, "amber LED %s.\n", level ? "on" : "off");
  95         break;
  96     case 3:
  97         fprintf(stderr, "wlan LED %s.\n", level ? "on" : "off");
  98         break;
  99     default:
 100         g_assert_not_reached();
 101     }
 102 }
 103
 104 static void tosa_reset(void *opaque, int line, int level)
 105 {
 106     if (level) {
 107         qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
 108     }
 109 }
 110
 111 static void tosa_misc_gpio_init(Object *obj)
 112 {
 113     DeviceState *dev = DEVICE(obj);
 114
 115     qdev_init_gpio_in_named(dev, tosa_gpio_leds, "leds", 4);
 116     qdev_init_gpio_in_named(dev, tosa_reset, "reset", 1);
 117 }
 118
 119 static void tosa_gpio_setup(PXA2xxState *cpu,
 120                 DeviceState *scp0,
 121                 DeviceState *scp1,
 122                 TC6393xbState *tmio)
 123 {
 124     DeviceState *misc_gpio;
 125
 126     misc_gpio = sysbus_create_simple(TYPE_TOSA_MISC_GPIO, -1, NULL);
 127
 128     /* MMC/SD host */
 129     pxa2xx_mmci_handlers(cpu->mmc,
 130                     qdev_get_gpio_in(scp0, TOSA_GPIO_SD_WP),
 131                     qemu_irq_invert(qdev_get_gpio_in(cpu->gpio, TOSA_GPIO_nSD_DETECT)));
 132
 133     /* Handle reset */
 134     qdev_connect_gpio_out(cpu->gpio, TOSA_GPIO_ON_RESET,
 135                           qdev_get_gpio_in_named(misc_gpio, "reset", 0));
 136
 137     /* PCMCIA signals: card's IRQ and Card-Detect */
 138     pxa2xx_pcmcia_set_irq_cb(cpu->pcmcia[0],
 139                         qdev_get_gpio_in(cpu->gpio, TOSA_GPIO_CF_IRQ),
 140                         qdev_get_gpio_in(cpu->gpio, TOSA_GPIO_CF_CD));
 141
 142     pxa2xx_pcmcia_set_irq_cb(cpu->pcmcia[1],
 143                         qdev_get_gpio_in(cpu->gpio, TOSA_GPIO_JC_CF_IRQ),
 144                         NULL);
 145
 146     qdev_connect_gpio_out(scp1, TOSA_GPIO_BT_LED,
 147                           qdev_get_gpio_in_named(misc_gpio, "leds", 0));
 148     qdev_connect_gpio_out(scp1, TOSA_GPIO_NOTE_LED,
 149                           qdev_get_gpio_in_named(misc_gpio, "leds", 1));
 150     qdev_connect_gpio_out(scp1, TOSA_GPIO_CHRG_ERR_LED,
 151                           qdev_get_gpio_in_named(misc_gpio, "leds", 2));
 152     qdev_connect_gpio_out(scp1, TOSA_GPIO_WLAN_LED,
 153                           qdev_get_gpio_in_named(misc_gpio, "leds", 3));
 154
 155     qdev_connect_gpio_out(scp1, TOSA_GPIO_TC6393XB_L3V_ON, tc6393xb_l3v_get(tmio));
 156
 157     /* UDC Vbus */
 158     qemu_irq_raise(qdev_get_gpio_in(cpu->gpio, TOSA_GPIO_USB_IN));
 159 }
 160
 161 static uint32_t tosa_ssp_tansfer(SSISlave *dev, uint32_t value)
 162 {
 163     fprintf(stderr, "TG: %d %02x\n", value >> 5, value & 0x1f);
 164     return 0;
 165 }
 166
 167 static void tosa_ssp_realize(SSISlave *dev, Error **errp)
 168 {
 169     /* Nothing to do.  */
 170 }
 171
 172 #define TYPE_TOSA_DAC "tosa_dac"
 173 #define TOSA_DAC(obj) OBJECT_CHECK(TosaDACState, (obj), TYPE_TOSA_DAC)
 174
 175 typedef struct {
 176     I2CSlave parent_obj;
 177
 178     int len;
 179     char buf[3];
 180 } TosaDACState;
 181
 182 static int tosa_dac_send(I2CSlave *i2c, uint8_t data)
 183 {
 184     TosaDACState *s = TOSA_DAC(i2c);
 185
 186     s->buf[s->len] = data;
 187     if (s->len ++ > 2) {
 188 #ifdef VERBOSE
 189         fprintf(stderr, "%s: message too long (%i bytes)\n", __func__, s->len);
 190 #endif
 191         return 1;
 192     }
 193
 194     if (s->len == 2) {
 195         fprintf(stderr, "dac: channel %d value 0x%02x\n",
 196                 s->buf[0], s->buf[1]);
 197     }
 198
 199     return 0;
 200 }
 201
 202 static int tosa_dac_event(I2CSlave *i2c, enum i2c_event event)
 203 {
 204     TosaDACState *s = TOSA_DAC(i2c);
 205
 206     s->len = 0;
 207     switch (event) {
 208     case I2C_START_SEND:
 209         break;
 210     case I2C_START_RECV:
 211         printf("%s: recv not supported!!!\n", __func__);
 212         break;
 213     case I2C_FINISH:
 214 #ifdef VERBOSE
 215         if (s->len < 2)
 216             printf("%s: message too short (%i bytes)\n", __func__, s->len);
 217         if (s->len > 2)
 218             printf("%s: message too long\n", __func__);
 219 #endif
 220         break;
 221     default:
 222         break;
 223     }
 224
 225     return 0;
 226 }
 227
 228 static uint8_t tosa_dac_recv(I2CSlave *s)
 229 {
 230     printf("%s: recv not supported!!!\n", __func__);
 231     return 0xff;
 232 }
 233
 234 static void tosa_tg_init(PXA2xxState *cpu)
 235 {
 236     I2CBus *bus = pxa2xx_i2c_bus(cpu->i2c[0]);
 237     i2c_slave_create_simple(bus, TYPE_TOSA_DAC, DAC_BASE);
 238     ssi_create_slave(cpu->ssp[1], "tosa-ssp");
 239 }
 240
 241
 242 static struct arm_boot_info tosa_binfo = {
 243     .loader_start = PXA2XX_SDRAM_BASE,
 244     .ram_size = 0x04000000,
 245 };
 246
 247 static void tosa_init(MachineState *machine)
 248 {
 249     MemoryRegion *address_space_mem = get_system_memory();
 250     MemoryRegion *rom = g_new(MemoryRegion, 1);
 251     PXA2xxState *mpu;
 252     TC6393xbState *tmio;
 253     DeviceState *scp0, *scp1;
 254
 255     mpu = pxa255_init(address_space_mem, tosa_binfo.ram_size);
 256
 257     memory_region_init_rom(rom, NULL, "tosa.rom", TOSA_ROM, &error_fatal);
 258     memory_region_add_subregion(address_space_mem, 0, rom);
 259
 260     tmio = tc6393xb_init(address_space_mem, 0x10000000,
 261             qdev_get_gpio_in(mpu->gpio, TOSA_GPIO_TC6393XB_INT));
 262
 263     scp0 = sysbus_create_simple("scoop", 0x08800000, NULL);
 264     scp1 = sysbus_create_simple("scoop", 0x14800040, NULL);
 265
 266     tosa_gpio_setup(mpu, scp0, scp1, tmio);
 267
 268     tosa_microdrive_attach(mpu);
 269
 270     tosa_tg_init(mpu);
 271
 272     tosa_binfo.board_id = 0x208;
 273     arm_load_kernel(mpu->cpu, machine, &tosa_binfo);
 274     sl_bootparam_write(SL_PXA_PARAM_BASE);
 275 }
 276
 277 static void tosapda_machine_init(MachineClass *mc)
 278 {
 279     mc->desc = "Sharp SL-6000 (Tosa) PDA (PXA255)";
 280     mc->init = tosa_init;
 281     mc->block_default_type = IF_IDE;
 282     mc->ignore_memory_transaction_failures = true;
 283 }
 284
 285 DEFINE_MACHINE("tosa", tosapda_machine_init)
 286
 287 static void tosa_dac_class_init(ObjectClass *klass, void *data)
 288 {
 289     I2CSlaveClass *k = I2C_SLAVE_CLASS(klass);
 290
 291     k->event = tosa_dac_event;
 292     k->recv = tosa_dac_recv;
 293     k->send = tosa_dac_send;
 294 }
 295
 296 static const TypeInfo tosa_dac_info = {
 297     .name          = TYPE_TOSA_DAC,
 298     .parent        = TYPE_I2C_SLAVE,
 299     .instance_size = sizeof(TosaDACState),
 300     .class_init    = tosa_dac_class_init,
 301 };
 302
 303 static void tosa_ssp_class_init(ObjectClass *klass, void *data)
 304 {
 305     SSISlaveClass *k = SSI_SLAVE_CLASS(klass);
 306
 307     k->realize = tosa_ssp_realize;
 308     k->transfer = tosa_ssp_tansfer;
 309 }
 310
 311 static const TypeInfo tosa_ssp_info = {
 312     .name          = "tosa-ssp",
 313     .parent        = TYPE_SSI_SLAVE,
 314     .instance_size = sizeof(SSISlave),
 315     .class_init    = tosa_ssp_class_init,
 316 };
 317
 318 static const TypeInfo tosa_misc_gpio_info = {
 319     .name          = TYPE_TOSA_MISC_GPIO,
 320     .parent        = TYPE_SYS_BUS_DEVICE,
 321     .instance_size = sizeof(TosaMiscGPIOState),
 322     .instance_init = tosa_misc_gpio_init,
 323     /*
 324      * No class init required: device has no internal state so does not
 325      * need to set up reset or vmstate, and has no realize method.
 326      */
 327 };
 328
 329 static void tosa_register_types(void)
 330 {
 331     type_register_static(&tosa_dac_info);
 332     type_register_static(&tosa_ssp_info);
 333     type_register_static(&tosa_misc_gpio_info);
 334 }
 335
 336 type_init(tosa_register_types)