hw/arm/fsl-imx31.c

   1 /*
   2  * Copyright (c) 2013 Jean-Christophe Dubois <jcd@tribudubois.net>
   3  *
   4  * i.MX31 SOC emulation.
   5  *
   6  * Based on hw/arm/fsl-imx31.c
   7  *
   8  *  This program is free software; you can redistribute it and/or modify it
   9  *  under the terms of the GNU General Public License as published by the
  10  *  Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful, but WITHOUT
  14  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15  *  FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
  16  *  for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License along
  19  *  with this program; if not, see <http://www.gnu.org/licenses/>.
  20  */
  21
  22 #include "qemu/osdep.h"
  23 #include "qapi/error.h"
  24 #include "qemu-common.h"
  25 #include "cpu.h"
  26 #include "hw/arm/fsl-imx31.h"
  27 #include "sysemu/sysemu.h"
  28 #include "exec/address-spaces.h"
  29 #include "hw/boards.h"
  30 #include "sysemu/char.h"
  31
  32 static void fsl_imx31_init(Object *obj)
  33 {
  34     FslIMX31State *s = FSL_IMX31(obj);
  35     int i;
  36
  37     object_initialize(&s->cpu, sizeof(s->cpu), "arm1136-" TYPE_ARM_CPU);
  38
  39     object_initialize(&s->avic, sizeof(s->avic), TYPE_IMX_AVIC);
  40     qdev_set_parent_bus(DEVICE(&s->avic), sysbus_get_default());
  41
  42     object_initialize(&s->ccm, sizeof(s->ccm), TYPE_IMX31_CCM);
  43     qdev_set_parent_bus(DEVICE(&s->ccm), sysbus_get_default());
  44
  45     for (i = 0; i < FSL_IMX31_NUM_UARTS; i++) {
  46         object_initialize(&s->uart[i], sizeof(s->uart[i]), TYPE_IMX_SERIAL);
  47         qdev_set_parent_bus(DEVICE(&s->uart[i]), sysbus_get_default());
  48     }
  49
  50     object_initialize(&s->gpt, sizeof(s->gpt), TYPE_IMX31_GPT);
  51     qdev_set_parent_bus(DEVICE(&s->gpt), sysbus_get_default());
  52
  53     for (i = 0; i < FSL_IMX31_NUM_EPITS; i++) {
  54         object_initialize(&s->epit[i], sizeof(s->epit[i]), TYPE_IMX_EPIT);
  55         qdev_set_parent_bus(DEVICE(&s->epit[i]), sysbus_get_default());
  56     }
  57
  58     for (i = 0; i < FSL_IMX31_NUM_I2CS; i++) {
  59         object_initialize(&s->i2c[i], sizeof(s->i2c[i]), TYPE_IMX_I2C);
  60         qdev_set_parent_bus(DEVICE(&s->i2c[i]), sysbus_get_default());
  61     }
  62
  63     for (i = 0; i < FSL_IMX31_NUM_GPIOS; i++) {
  64         object_initialize(&s->gpio[i], sizeof(s->gpio[i]), TYPE_IMX_GPIO);
  65         qdev_set_parent_bus(DEVICE(&s->gpio[i]), sysbus_get_default());
  66     }
  67 }
  68
  69 static void fsl_imx31_realize(DeviceState *dev, Error **errp)
  70 {
  71     FslIMX31State *s = FSL_IMX31(dev);
  72     uint16_t i;
  73     Error *err = NULL;
  74
  75     object_property_set_bool(OBJECT(&s->cpu), true, "realized", &err);
  76     if (err) {
  77         error_propagate(errp, err);
  78         return;
  79     }
  80
  81     object_property_set_bool(OBJECT(&s->avic), true, "realized", &err);
  82     if (err) {
  83         error_propagate(errp, err);
  84         return;
  85     }
  86     sysbus_mmio_map(SYS_BUS_DEVICE(&s->avic), 0, FSL_IMX31_AVIC_ADDR);
  87     sysbus_connect_irq(SYS_BUS_DEVICE(&s->avic), 0,
  88                        qdev_get_gpio_in(DEVICE(&s->cpu), ARM_CPU_IRQ));
  89     sysbus_connect_irq(SYS_BUS_DEVICE(&s->avic), 1,
  90                        qdev_get_gpio_in(DEVICE(&s->cpu), ARM_CPU_FIQ));
  91
  92     object_property_set_bool(OBJECT(&s->ccm), true, "realized", &err);
  93     if (err) {
  94         error_propagate(errp, err);
  95         return;
  96     }
  97     sysbus_mmio_map(SYS_BUS_DEVICE(&s->ccm), 0, FSL_IMX31_CCM_ADDR);
  98
  99     /* Initialize all UARTS */
 100     for (i = 0; i < FSL_IMX31_NUM_UARTS; i++) {
 101         static const struct {
 102             hwaddr addr;
 103             unsigned int irq;
 104         } serial_table[FSL_IMX31_NUM_UARTS] = {
 105             { FSL_IMX31_UART1_ADDR, FSL_IMX31_UART1_IRQ },
 106             { FSL_IMX31_UART2_ADDR, FSL_IMX31_UART2_IRQ },
 107         };
 108
 109         if (i < MAX_SERIAL_PORTS) {
 110             CharDriverState *chr;
 111
 112             chr = serial_hds[i];
 113
 114             if (!chr) {
 115                 char label[20];
 116                 snprintf(label, sizeof(label), "imx31.uart%d", i);
 117                 chr = qemu_chr_new(label, "null");
 118             }
 119
 120             qdev_prop_set_chr(DEVICE(&s->uart[i]), "chardev", chr);
 121         }
 122
 123         object_property_set_bool(OBJECT(&s->uart[i]), true, "realized", &err);
 124         if (err) {
 125             error_propagate(errp, err);
 126             return;
 127         }
 128
 129         sysbus_mmio_map(SYS_BUS_DEVICE(&s->uart[i]), 0, serial_table[i].addr);
 130         sysbus_connect_irq(SYS_BUS_DEVICE(&s->uart[i]), 0,
 131                            qdev_get_gpio_in(DEVICE(&s->avic),
 132                                             serial_table[i].irq));
 133     }
 134
 135     s->gpt.ccm = IMX_CCM(&s->ccm);
 136
 137     object_property_set_bool(OBJECT(&s->gpt), true, "realized", &err);
 138     if (err) {
 139         error_propagate(errp, err);
 140         return;
 141     }
 142
 143     sysbus_mmio_map(SYS_BUS_DEVICE(&s->gpt), 0, FSL_IMX31_GPT_ADDR);
 144     sysbus_connect_irq(SYS_BUS_DEVICE(&s->gpt), 0,
 145                        qdev_get_gpio_in(DEVICE(&s->avic), FSL_IMX31_GPT_IRQ));
 146
 147     /* Initialize all EPIT timers */
 148     for (i = 0; i < FSL_IMX31_NUM_EPITS; i++) {
 149         static const struct {
 150             hwaddr addr;
 151             unsigned int irq;
 152         } epit_table[FSL_IMX31_NUM_EPITS] = {
 153             { FSL_IMX31_EPIT1_ADDR, FSL_IMX31_EPIT1_IRQ },
 154             { FSL_IMX31_EPIT2_ADDR, FSL_IMX31_EPIT2_IRQ },
 155         };
 156
 157         s->epit[i].ccm = IMX_CCM(&s->ccm);
 158
 159         object_property_set_bool(OBJECT(&s->epit[i]), true, "realized", &err);
 160         if (err) {
 161             error_propagate(errp, err);
 162             return;
 163         }
 164
 165         sysbus_mmio_map(SYS_BUS_DEVICE(&s->epit[i]), 0, epit_table[i].addr);
 166         sysbus_connect_irq(SYS_BUS_DEVICE(&s->epit[i]), 0,
 167                            qdev_get_gpio_in(DEVICE(&s->avic),
 168                                             epit_table[i].irq));
 169     }
 170
 171     /* Initialize all I2C */
 172     for (i = 0; i < FSL_IMX31_NUM_I2CS; i++) {
 173         static const struct {
 174             hwaddr addr;
 175             unsigned int irq;
 176         } i2c_table[FSL_IMX31_NUM_I2CS] = {
 177             { FSL_IMX31_I2C1_ADDR, FSL_IMX31_I2C1_IRQ },
 178             { FSL_IMX31_I2C2_ADDR, FSL_IMX31_I2C2_IRQ },
 179             { FSL_IMX31_I2C3_ADDR, FSL_IMX31_I2C3_IRQ }
 180         };
 181
 182         /* Initialize the I2C */
 183         object_property_set_bool(OBJECT(&s->i2c[i]), true, "realized", &err);
 184         if (err) {
 185             error_propagate(errp, err);
 186             return;
 187         }
 188         /* Map I2C memory */
 189         sysbus_mmio_map(SYS_BUS_DEVICE(&s->i2c[i]), 0, i2c_table[i].addr);
 190         /* Connect I2C IRQ to PIC */
 191         sysbus_connect_irq(SYS_BUS_DEVICE(&s->i2c[i]), 0,
 192                            qdev_get_gpio_in(DEVICE(&s->avic),
 193                                             i2c_table[i].irq));
 194     }
 195
 196     /* Initialize all GPIOs */
 197     for (i = 0; i < FSL_IMX31_NUM_GPIOS; i++) {
 198         static const struct {
 199             hwaddr addr;
 200             unsigned int irq;
 201         } gpio_table[FSL_IMX31_NUM_GPIOS] = {
 202             { FSL_IMX31_GPIO1_ADDR, FSL_IMX31_GPIO1_IRQ },
 203             { FSL_IMX31_GPIO2_ADDR, FSL_IMX31_GPIO2_IRQ },
 204             { FSL_IMX31_GPIO3_ADDR, FSL_IMX31_GPIO3_IRQ }
 205         };
 206
 207         object_property_set_bool(OBJECT(&s->gpio[i]), false, "has-edge-sel",
 208                                  &error_abort);
 209         object_property_set_bool(OBJECT(&s->gpio[i]), true, "realized", &err);
 210         if (err) {
 211             error_propagate(errp, err);
 212             return;
 213         }
 214         sysbus_mmio_map(SYS_BUS_DEVICE(&s->gpio[i]), 0, gpio_table[i].addr);
 215         /* Connect GPIO IRQ to PIC */
 216         sysbus_connect_irq(SYS_BUS_DEVICE(&s->gpio[i]), 0,
 217                            qdev_get_gpio_in(DEVICE(&s->avic),
 218                                             gpio_table[i].irq));
 219     }
 220
 221     /* On a real system, the first 16k is a `secure boot rom' */
 222     memory_region_init_rom(&s->secure_rom, NULL, "imx31.secure_rom",
 223                            FSL_IMX31_SECURE_ROM_SIZE, &err);
 224     if (err) {
 225         error_propagate(errp, err);
 226         return;
 227     }
 228     memory_region_add_subregion(get_system_memory(), FSL_IMX31_SECURE_ROM_ADDR,
 229                                 &s->secure_rom);
 230
 231     /* There is also a 16k ROM */
 232     memory_region_init_rom(&s->rom, NULL, "imx31.rom",
 233                            FSL_IMX31_ROM_SIZE, &err);
 234     if (err) {
 235         error_propagate(errp, err);
 236         return;
 237     }
 238     memory_region_add_subregion(get_system_memory(), FSL_IMX31_ROM_ADDR,
 239                                 &s->rom);
 240
 241     /* initialize internal RAM (16 KB) */
 242     memory_region_init_ram(&s->iram, NULL, "imx31.iram", FSL_IMX31_IRAM_SIZE,
 243                            &err);
 244     if (err) {
 245         error_propagate(errp, err);
 246         return;
 247     }
 248     memory_region_add_subregion(get_system_memory(), FSL_IMX31_IRAM_ADDR,
 249                                 &s->iram);
 250     vmstate_register_ram_global(&s->iram);
 251
 252     /* internal RAM (16 KB) is aliased over 256 MB - 16 KB */
 253     memory_region_init_alias(&s->iram_alias, NULL, "imx31.iram_alias",
 254                              &s->iram, 0, FSL_IMX31_IRAM_ALIAS_SIZE);
 255     memory_region_add_subregion(get_system_memory(), FSL_IMX31_IRAM_ALIAS_ADDR,
 256                                 &s->iram_alias);
 257 }
 258
 259 static void fsl_imx31_class_init(ObjectClass *oc, void *data)
 260 {
 261     DeviceClass *dc = DEVICE_CLASS(oc);
 262
 263     dc->realize = fsl_imx31_realize;
 264
 265     /*
 266      * Reason: creates an ARM CPU, thus use after free(), see
 267      * arm_cpu_class_init()
 268      */
 269     dc->cannot_destroy_with_object_finalize_yet = true;
 270     dc->desc = "i.MX31 SOC";
 271 }
 272
 273 static const TypeInfo fsl_imx31_type_info = {
 274     .name = TYPE_FSL_IMX31,
 275     .parent = TYPE_DEVICE,
 276     .instance_size = sizeof(FslIMX31State),
 277     .instance_init = fsl_imx31_init,
 278     .class_init = fsl_imx31_class_init,
 279 };
 280
 281 static void fsl_imx31_register_types(void)
 282 {
 283     type_register_static(&fsl_imx31_type_info);
 284 }
 285
 286 type_init(fsl_imx31_register_types)