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 "chardev/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     sysbus_init_child_obj(obj, "avic", &s->avic, sizeof(s->avic),
  40                           TYPE_IMX_AVIC);
  41
  42     sysbus_init_child_obj(obj, "ccm", &s->ccm, sizeof(s->ccm), TYPE_IMX31_CCM);
  43
  44     for (i = 0; i < FSL_IMX31_NUM_UARTS; i++) {
  45         sysbus_init_child_obj(obj, "uart[*]", &s->uart[i], sizeof(s->uart[i]),
  46                               TYPE_IMX_SERIAL);
  47     }
  48
  49     sysbus_init_child_obj(obj, "gpt", &s->gpt, sizeof(s->gpt), TYPE_IMX31_GPT);
  50
  51     for (i = 0; i < FSL_IMX31_NUM_EPITS; i++) {
  52         sysbus_init_child_obj(obj, "epit[*]", &s->epit[i], sizeof(s->epit[i]),
  53                               TYPE_IMX_EPIT);
  54     }
  55
  56     for (i = 0; i < FSL_IMX31_NUM_I2CS; i++) {
  57         sysbus_init_child_obj(obj, "i2c[*]", &s->i2c[i], sizeof(s->i2c[i]),
  58                               TYPE_IMX_I2C);
  59     }
  60
  61     for (i = 0; i < FSL_IMX31_NUM_GPIOS; i++) {
  62         sysbus_init_child_obj(obj, "gpio[*]", &s->gpio[i], sizeof(s->gpio[i]),
  63                               TYPE_IMX_GPIO);
  64     }
  65 }
  66
  67 static void fsl_imx31_realize(DeviceState *dev, Error **errp)
  68 {
  69     FslIMX31State *s = FSL_IMX31(dev);
  70     uint16_t i;
  71     Error *err = NULL;
  72
  73     object_property_set_bool(OBJECT(&s->cpu), true, "realized", &err);
  74     if (err) {
  75         error_propagate(errp, err);
  76         return;
  77     }
  78
  79     object_property_set_bool(OBJECT(&s->avic), true, "realized", &err);
  80     if (err) {
  81         error_propagate(errp, err);
  82         return;
  83     }
  84     sysbus_mmio_map(SYS_BUS_DEVICE(&s->avic), 0, FSL_IMX31_AVIC_ADDR);
  85     sysbus_connect_irq(SYS_BUS_DEVICE(&s->avic), 0,
  86                        qdev_get_gpio_in(DEVICE(&s->cpu), ARM_CPU_IRQ));
  87     sysbus_connect_irq(SYS_BUS_DEVICE(&s->avic), 1,
  88                        qdev_get_gpio_in(DEVICE(&s->cpu), ARM_CPU_FIQ));
  89
  90     object_property_set_bool(OBJECT(&s->ccm), true, "realized", &err);
  91     if (err) {
  92         error_propagate(errp, err);
  93         return;
  94     }
  95     sysbus_mmio_map(SYS_BUS_DEVICE(&s->ccm), 0, FSL_IMX31_CCM_ADDR);
  96
  97     /* Initialize all UARTS */
  98     for (i = 0; i < FSL_IMX31_NUM_UARTS; i++) {
  99         static const struct {
 100             hwaddr addr;
 101             unsigned int irq;
 102         } serial_table[FSL_IMX31_NUM_UARTS] = {
 103             { FSL_IMX31_UART1_ADDR, FSL_IMX31_UART1_IRQ },
 104             { FSL_IMX31_UART2_ADDR, FSL_IMX31_UART2_IRQ },
 105         };
 106
 107         qdev_prop_set_chr(DEVICE(&s->uart[i]), "chardev", serial_hd(i));
 108
 109         object_property_set_bool(OBJECT(&s->uart[i]), true, "realized", &err);
 110         if (err) {
 111             error_propagate(errp, err);
 112             return;
 113         }
 114
 115         sysbus_mmio_map(SYS_BUS_DEVICE(&s->uart[i]), 0, serial_table[i].addr);
 116         sysbus_connect_irq(SYS_BUS_DEVICE(&s->uart[i]), 0,
 117                            qdev_get_gpio_in(DEVICE(&s->avic),
 118                                             serial_table[i].irq));
 119     }
 120
 121     s->gpt.ccm = IMX_CCM(&s->ccm);
 122
 123     object_property_set_bool(OBJECT(&s->gpt), true, "realized", &err);
 124     if (err) {
 125         error_propagate(errp, err);
 126         return;
 127     }
 128
 129     sysbus_mmio_map(SYS_BUS_DEVICE(&s->gpt), 0, FSL_IMX31_GPT_ADDR);
 130     sysbus_connect_irq(SYS_BUS_DEVICE(&s->gpt), 0,
 131                        qdev_get_gpio_in(DEVICE(&s->avic), FSL_IMX31_GPT_IRQ));
 132
 133     /* Initialize all EPIT timers */
 134     for (i = 0; i < FSL_IMX31_NUM_EPITS; i++) {
 135         static const struct {
 136             hwaddr addr;
 137             unsigned int irq;
 138         } epit_table[FSL_IMX31_NUM_EPITS] = {
 139             { FSL_IMX31_EPIT1_ADDR, FSL_IMX31_EPIT1_IRQ },
 140             { FSL_IMX31_EPIT2_ADDR, FSL_IMX31_EPIT2_IRQ },
 141         };
 142
 143         s->epit[i].ccm = IMX_CCM(&s->ccm);
 144
 145         object_property_set_bool(OBJECT(&s->epit[i]), true, "realized", &err);
 146         if (err) {
 147             error_propagate(errp, err);
 148             return;
 149         }
 150
 151         sysbus_mmio_map(SYS_BUS_DEVICE(&s->epit[i]), 0, epit_table[i].addr);
 152         sysbus_connect_irq(SYS_BUS_DEVICE(&s->epit[i]), 0,
 153                            qdev_get_gpio_in(DEVICE(&s->avic),
 154                                             epit_table[i].irq));
 155     }
 156
 157     /* Initialize all I2C */
 158     for (i = 0; i < FSL_IMX31_NUM_I2CS; i++) {
 159         static const struct {
 160             hwaddr addr;
 161             unsigned int irq;
 162         } i2c_table[FSL_IMX31_NUM_I2CS] = {
 163             { FSL_IMX31_I2C1_ADDR, FSL_IMX31_I2C1_IRQ },
 164             { FSL_IMX31_I2C2_ADDR, FSL_IMX31_I2C2_IRQ },
 165             { FSL_IMX31_I2C3_ADDR, FSL_IMX31_I2C3_IRQ }
 166         };
 167
 168         /* Initialize the I2C */
 169         object_property_set_bool(OBJECT(&s->i2c[i]), true, "realized", &err);
 170         if (err) {
 171             error_propagate(errp, err);
 172             return;
 173         }
 174         /* Map I2C memory */
 175         sysbus_mmio_map(SYS_BUS_DEVICE(&s->i2c[i]), 0, i2c_table[i].addr);
 176         /* Connect I2C IRQ to PIC */
 177         sysbus_connect_irq(SYS_BUS_DEVICE(&s->i2c[i]), 0,
 178                            qdev_get_gpio_in(DEVICE(&s->avic),
 179                                             i2c_table[i].irq));
 180     }
 181
 182     /* Initialize all GPIOs */
 183     for (i = 0; i < FSL_IMX31_NUM_GPIOS; i++) {
 184         static const struct {
 185             hwaddr addr;
 186             unsigned int irq;
 187         } gpio_table[FSL_IMX31_NUM_GPIOS] = {
 188             { FSL_IMX31_GPIO1_ADDR, FSL_IMX31_GPIO1_IRQ },
 189             { FSL_IMX31_GPIO2_ADDR, FSL_IMX31_GPIO2_IRQ },
 190             { FSL_IMX31_GPIO3_ADDR, FSL_IMX31_GPIO3_IRQ }
 191         };
 192
 193         object_property_set_bool(OBJECT(&s->gpio[i]), false, "has-edge-sel",
 194                                  &error_abort);
 195         object_property_set_bool(OBJECT(&s->gpio[i]), true, "realized", &err);
 196         if (err) {
 197             error_propagate(errp, err);
 198             return;
 199         }
 200         sysbus_mmio_map(SYS_BUS_DEVICE(&s->gpio[i]), 0, gpio_table[i].addr);
 201         /* Connect GPIO IRQ to PIC */
 202         sysbus_connect_irq(SYS_BUS_DEVICE(&s->gpio[i]), 0,
 203                            qdev_get_gpio_in(DEVICE(&s->avic),
 204                                             gpio_table[i].irq));
 205     }
 206
 207     /* On a real system, the first 16k is a `secure boot rom' */
 208     memory_region_init_rom(&s->secure_rom, NULL, "imx31.secure_rom",
 209                            FSL_IMX31_SECURE_ROM_SIZE, &err);
 210     if (err) {
 211         error_propagate(errp, err);
 212         return;
 213     }
 214     memory_region_add_subregion(get_system_memory(), FSL_IMX31_SECURE_ROM_ADDR,
 215                                 &s->secure_rom);
 216
 217     /* There is also a 16k ROM */
 218     memory_region_init_rom(&s->rom, NULL, "imx31.rom",
 219                            FSL_IMX31_ROM_SIZE, &err);
 220     if (err) {
 221         error_propagate(errp, err);
 222         return;
 223     }
 224     memory_region_add_subregion(get_system_memory(), FSL_IMX31_ROM_ADDR,
 225                                 &s->rom);
 226
 227     /* initialize internal RAM (16 KB) */
 228     memory_region_init_ram(&s->iram, NULL, "imx31.iram", FSL_IMX31_IRAM_SIZE,
 229                            &err);
 230     if (err) {
 231         error_propagate(errp, err);
 232         return;
 233     }
 234     memory_region_add_subregion(get_system_memory(), FSL_IMX31_IRAM_ADDR,
 235                                 &s->iram);
 236
 237     /* internal RAM (16 KB) is aliased over 256 MB - 16 KB */
 238     memory_region_init_alias(&s->iram_alias, NULL, "imx31.iram_alias",
 239                              &s->iram, 0, FSL_IMX31_IRAM_ALIAS_SIZE);
 240     memory_region_add_subregion(get_system_memory(), FSL_IMX31_IRAM_ALIAS_ADDR,
 241                                 &s->iram_alias);
 242 }
 243
 244 static void fsl_imx31_class_init(ObjectClass *oc, void *data)
 245 {
 246     DeviceClass *dc = DEVICE_CLASS(oc);
 247
 248     dc->realize = fsl_imx31_realize;
 249     dc->desc = "i.MX31 SOC";
 250     /*
 251      * Reason: uses serial_hd in realize and the kzm board does not
 252      * support multiple CPUs
 253      */
 254     dc->user_creatable = false;
 255 }
 256
 257 static const TypeInfo fsl_imx31_type_info = {
 258     .name = TYPE_FSL_IMX31,
 259     .parent = TYPE_DEVICE,
 260     .instance_size = sizeof(FslIMX31State),
 261     .instance_init = fsl_imx31_init,
 262     .class_init = fsl_imx31_class_init,
 263 };
 264
 265 static void fsl_imx31_register_types(void)
 266 {
 267     type_register_static(&fsl_imx31_type_info);
 268 }
 269
 270 type_init(fsl_imx31_register_types)