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 "hw/arm/fsl-imx31.h"
  25 #include "sysemu/sysemu.h"
  26 #include "exec/address-spaces.h"
  27 #include "hw/qdev-properties.h"
  28 #include "chardev/char.h"
  29 #include "target/arm/cpu-qom.h"
  30
  31 static void fsl_imx31_init(Object *obj)
  32 {
  33     FslIMX31State *s = FSL_IMX31(obj);
  34     int i;
  35
  36     object_initialize_child(obj, "cpu", &s->cpu, ARM_CPU_TYPE_NAME("arm1136"));
  37
  38     object_initialize_child(obj, "avic", &s->avic, TYPE_IMX_AVIC);
  39
  40     object_initialize_child(obj, "ccm", &s->ccm, TYPE_IMX31_CCM);
  41
  42     for (i = 0; i < FSL_IMX31_NUM_UARTS; i++) {
  43         object_initialize_child(obj, "uart[*]", &s->uart[i], TYPE_IMX_SERIAL);
  44     }
  45
  46     object_initialize_child(obj, "gpt", &s->gpt, TYPE_IMX31_GPT);
  47
  48     for (i = 0; i < FSL_IMX31_NUM_EPITS; i++) {
  49         object_initialize_child(obj, "epit[*]", &s->epit[i], TYPE_IMX_EPIT);
  50     }
  51
  52     for (i = 0; i < FSL_IMX31_NUM_I2CS; i++) {
  53         object_initialize_child(obj, "i2c[*]", &s->i2c[i], TYPE_IMX_I2C);
  54     }
  55
  56     for (i = 0; i < FSL_IMX31_NUM_GPIOS; i++) {
  57         object_initialize_child(obj, "gpio[*]", &s->gpio[i], TYPE_IMX_GPIO);
  58     }
  59
  60     object_initialize_child(obj, "wdt", &s->wdt, TYPE_IMX2_WDT);
  61 }
  62
  63 static void fsl_imx31_realize(DeviceState *dev, Error **errp)
  64 {
  65     FslIMX31State *s = FSL_IMX31(dev);
  66     uint16_t i;
  67
  68     if (!qdev_realize(DEVICE(&s->cpu), NULL, errp)) {
  69         return;
  70     }
  71
  72     if (!sysbus_realize(SYS_BUS_DEVICE(&s->avic), errp)) {
  73         return;
  74     }
  75     sysbus_mmio_map(SYS_BUS_DEVICE(&s->avic), 0, FSL_IMX31_AVIC_ADDR);
  76     sysbus_connect_irq(SYS_BUS_DEVICE(&s->avic), 0,
  77                        qdev_get_gpio_in(DEVICE(&s->cpu), ARM_CPU_IRQ));
  78     sysbus_connect_irq(SYS_BUS_DEVICE(&s->avic), 1,
  79                        qdev_get_gpio_in(DEVICE(&s->cpu), ARM_CPU_FIQ));
  80
  81     if (!sysbus_realize(SYS_BUS_DEVICE(&s->ccm), errp)) {
  82         return;
  83     }
  84     sysbus_mmio_map(SYS_BUS_DEVICE(&s->ccm), 0, FSL_IMX31_CCM_ADDR);
  85
  86     /* Initialize all UARTS */
  87     for (i = 0; i < FSL_IMX31_NUM_UARTS; i++) {
  88         static const struct {
  89             hwaddr addr;
  90             unsigned int irq;
  91         } serial_table[FSL_IMX31_NUM_UARTS] = {
  92             { FSL_IMX31_UART1_ADDR, FSL_IMX31_UART1_IRQ },
  93             { FSL_IMX31_UART2_ADDR, FSL_IMX31_UART2_IRQ },
  94         };
  95
  96         qdev_prop_set_chr(DEVICE(&s->uart[i]), "chardev", serial_hd(i));
  97
  98         if (!sysbus_realize(SYS_BUS_DEVICE(&s->uart[i]), errp)) {
  99             return;
 100         }
 101
 102         sysbus_mmio_map(SYS_BUS_DEVICE(&s->uart[i]), 0, serial_table[i].addr);
 103         sysbus_connect_irq(SYS_BUS_DEVICE(&s->uart[i]), 0,
 104                            qdev_get_gpio_in(DEVICE(&s->avic),
 105                                             serial_table[i].irq));
 106     }
 107
 108     s->gpt.ccm = IMX_CCM(&s->ccm);
 109
 110     if (!sysbus_realize(SYS_BUS_DEVICE(&s->gpt), errp)) {
 111         return;
 112     }
 113
 114     sysbus_mmio_map(SYS_BUS_DEVICE(&s->gpt), 0, FSL_IMX31_GPT_ADDR);
 115     sysbus_connect_irq(SYS_BUS_DEVICE(&s->gpt), 0,
 116                        qdev_get_gpio_in(DEVICE(&s->avic), FSL_IMX31_GPT_IRQ));
 117
 118     /* Initialize all EPIT timers */
 119     for (i = 0; i < FSL_IMX31_NUM_EPITS; i++) {
 120         static const struct {
 121             hwaddr addr;
 122             unsigned int irq;
 123         } epit_table[FSL_IMX31_NUM_EPITS] = {
 124             { FSL_IMX31_EPIT1_ADDR, FSL_IMX31_EPIT1_IRQ },
 125             { FSL_IMX31_EPIT2_ADDR, FSL_IMX31_EPIT2_IRQ },
 126         };
 127
 128         s->epit[i].ccm = IMX_CCM(&s->ccm);
 129
 130         if (!sysbus_realize(SYS_BUS_DEVICE(&s->epit[i]), errp)) {
 131             return;
 132         }
 133
 134         sysbus_mmio_map(SYS_BUS_DEVICE(&s->epit[i]), 0, epit_table[i].addr);
 135         sysbus_connect_irq(SYS_BUS_DEVICE(&s->epit[i]), 0,
 136                            qdev_get_gpio_in(DEVICE(&s->avic),
 137                                             epit_table[i].irq));
 138     }
 139
 140     /* Initialize all I2C */
 141     for (i = 0; i < FSL_IMX31_NUM_I2CS; i++) {
 142         static const struct {
 143             hwaddr addr;
 144             unsigned int irq;
 145         } i2c_table[FSL_IMX31_NUM_I2CS] = {
 146             { FSL_IMX31_I2C1_ADDR, FSL_IMX31_I2C1_IRQ },
 147             { FSL_IMX31_I2C2_ADDR, FSL_IMX31_I2C2_IRQ },
 148             { FSL_IMX31_I2C3_ADDR, FSL_IMX31_I2C3_IRQ }
 149         };
 150
 151         /* Initialize the I2C */
 152         if (!sysbus_realize(SYS_BUS_DEVICE(&s->i2c[i]), errp)) {
 153             return;
 154         }
 155         /* Map I2C memory */
 156         sysbus_mmio_map(SYS_BUS_DEVICE(&s->i2c[i]), 0, i2c_table[i].addr);
 157         /* Connect I2C IRQ to PIC */
 158         sysbus_connect_irq(SYS_BUS_DEVICE(&s->i2c[i]), 0,
 159                            qdev_get_gpio_in(DEVICE(&s->avic),
 160                                             i2c_table[i].irq));
 161     }
 162
 163     /* Initialize all GPIOs */
 164     for (i = 0; i < FSL_IMX31_NUM_GPIOS; i++) {
 165         static const struct {
 166             hwaddr addr;
 167             unsigned int irq;
 168         } gpio_table[FSL_IMX31_NUM_GPIOS] = {
 169             { FSL_IMX31_GPIO1_ADDR, FSL_IMX31_GPIO1_IRQ },
 170             { FSL_IMX31_GPIO2_ADDR, FSL_IMX31_GPIO2_IRQ },
 171             { FSL_IMX31_GPIO3_ADDR, FSL_IMX31_GPIO3_IRQ }
 172         };
 173
 174         object_property_set_bool(OBJECT(&s->gpio[i]), "has-edge-sel", false,
 175                                  &error_abort);
 176         if (!sysbus_realize(SYS_BUS_DEVICE(&s->gpio[i]), errp)) {
 177             return;
 178         }
 179         sysbus_mmio_map(SYS_BUS_DEVICE(&s->gpio[i]), 0, gpio_table[i].addr);
 180         /* Connect GPIO IRQ to PIC */
 181         sysbus_connect_irq(SYS_BUS_DEVICE(&s->gpio[i]), 0,
 182                            qdev_get_gpio_in(DEVICE(&s->avic),
 183                                             gpio_table[i].irq));
 184     }
 185
 186     /* Watchdog */
 187     sysbus_realize(SYS_BUS_DEVICE(&s->wdt), &error_abort);
 188     sysbus_mmio_map(SYS_BUS_DEVICE(&s->wdt), 0, FSL_IMX31_WDT_ADDR);
 189
 190     /* On a real system, the first 16k is a `secure boot rom' */
 191     if (!memory_region_init_rom(&s->secure_rom, OBJECT(dev), "imx31.secure_rom",
 192                                 FSL_IMX31_SECURE_ROM_SIZE, errp)) {
 193         return;
 194     }
 195     memory_region_add_subregion(get_system_memory(), FSL_IMX31_SECURE_ROM_ADDR,
 196                                 &s->secure_rom);
 197
 198     /* There is also a 16k ROM */
 199     if (!memory_region_init_rom(&s->rom, OBJECT(dev), "imx31.rom",
 200                                 FSL_IMX31_ROM_SIZE, errp)) {
 201         return;
 202     }
 203     memory_region_add_subregion(get_system_memory(), FSL_IMX31_ROM_ADDR,
 204                                 &s->rom);
 205
 206     /* initialize internal RAM (16 KB) */
 207     if (!memory_region_init_ram(&s->iram, NULL, "imx31.iram",
 208                                 FSL_IMX31_IRAM_SIZE, errp)) {
 209         return;
 210     }
 211     memory_region_add_subregion(get_system_memory(), FSL_IMX31_IRAM_ADDR,
 212                                 &s->iram);
 213
 214     /* internal RAM (16 KB) is aliased over 256 MB - 16 KB */
 215     memory_region_init_alias(&s->iram_alias, OBJECT(dev), "imx31.iram_alias",
 216                              &s->iram, 0, FSL_IMX31_IRAM_ALIAS_SIZE);
 217     memory_region_add_subregion(get_system_memory(), FSL_IMX31_IRAM_ALIAS_ADDR,
 218                                 &s->iram_alias);
 219 }
 220
 221 static void fsl_imx31_class_init(ObjectClass *oc, void *data)
 222 {
 223     DeviceClass *dc = DEVICE_CLASS(oc);
 224
 225     dc->realize = fsl_imx31_realize;
 226     dc->desc = "i.MX31 SOC";
 227     /*
 228      * Reason: uses serial_hd in realize and the kzm board does not
 229      * support multiple CPUs
 230      */
 231     dc->user_creatable = false;
 232 }
 233
 234 static const TypeInfo fsl_imx31_type_info = {
 235     .name = TYPE_FSL_IMX31,
 236     .parent = TYPE_DEVICE,
 237     .instance_size = sizeof(FslIMX31State),
 238     .instance_init = fsl_imx31_init,
 239     .class_init = fsl_imx31_class_init,
 240 };
 241
 242 static void fsl_imx31_register_types(void)
 243 {
 244     type_register_static(&fsl_imx31_type_info);
 245 }
 246
 247 type_init(fsl_imx31_register_types)