hw/arm/stm32f205_soc.c

   1 /*
   2  * STM32F205 SoC
   3  *
   4  * Copyright (c) 2014 Alistair Francis <alistair@alistair23.me>
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24
  25 #include "qemu/osdep.h"
  26 #include "qapi/error.h"
  27 #include "qemu/module.h"
  28 #include "hw/arm/boot.h"
  29 #include "exec/address-spaces.h"
  30 #include "hw/arm/stm32f205_soc.h"
  31 #include "hw/qdev-properties.h"
  32 #include "sysemu/sysemu.h"
  33
  34 /* At the moment only Timer 2 to 5 are modelled */
  35 static const uint32_t timer_addr[STM_NUM_TIMERS] = { 0x40000000, 0x40000400,
  36     0x40000800, 0x40000C00 };
  37 static const uint32_t usart_addr[STM_NUM_USARTS] = { 0x40011000, 0x40004400,
  38     0x40004800, 0x40004C00, 0x40005000, 0x40011400 };
  39 static const uint32_t adc_addr[STM_NUM_ADCS] = { 0x40012000, 0x40012100,
  40     0x40012200 };
  41 static const uint32_t spi_addr[STM_NUM_SPIS] = { 0x40013000, 0x40003800,
  42     0x40003C00 };
  43
  44 static const int timer_irq[STM_NUM_TIMERS] = {28, 29, 30, 50};
  45 static const int usart_irq[STM_NUM_USARTS] = {37, 38, 39, 52, 53, 71};
  46 #define ADC_IRQ 18
  47 static const int spi_irq[STM_NUM_SPIS] = {35, 36, 51};
  48
  49 static void stm32f205_soc_initfn(Object *obj)
  50 {
  51     STM32F205State *s = STM32F205_SOC(obj);
  52     int i;
  53
  54     sysbus_init_child_obj(obj, "armv7m", &s->armv7m, sizeof(s->armv7m),
  55                           TYPE_ARMV7M);
  56
  57     sysbus_init_child_obj(obj, "syscfg", &s->syscfg, sizeof(s->syscfg),
  58                           TYPE_STM32F2XX_SYSCFG);
  59
  60     for (i = 0; i < STM_NUM_USARTS; i++) {
  61         sysbus_init_child_obj(obj, "usart[*]", &s->usart[i],
  62                               sizeof(s->usart[i]), TYPE_STM32F2XX_USART);
  63     }
  64
  65     for (i = 0; i < STM_NUM_TIMERS; i++) {
  66         sysbus_init_child_obj(obj, "timer[*]", &s->timer[i],
  67                               sizeof(s->timer[i]), TYPE_STM32F2XX_TIMER);
  68     }
  69
  70     s->adc_irqs = OR_IRQ(object_new(TYPE_OR_IRQ));
  71
  72     for (i = 0; i < STM_NUM_ADCS; i++) {
  73         sysbus_init_child_obj(obj, "adc[*]", &s->adc[i], sizeof(s->adc[i]),
  74                               TYPE_STM32F2XX_ADC);
  75     }
  76
  77     for (i = 0; i < STM_NUM_SPIS; i++) {
  78         sysbus_init_child_obj(obj, "spi[*]", &s->spi[i], sizeof(s->spi[i]),
  79                               TYPE_STM32F2XX_SPI);
  80     }
  81 }
  82
  83 static void stm32f205_soc_realize(DeviceState *dev_soc, Error **errp)
  84 {
  85     STM32F205State *s = STM32F205_SOC(dev_soc);
  86     DeviceState *dev, *armv7m;
  87     SysBusDevice *busdev;
  88     Error *err = NULL;
  89     int i;
  90
  91     MemoryRegion *system_memory = get_system_memory();
  92     MemoryRegion *sram = g_new(MemoryRegion, 1);
  93     MemoryRegion *flash = g_new(MemoryRegion, 1);
  94     MemoryRegion *flash_alias = g_new(MemoryRegion, 1);
  95
  96     memory_region_init_ram(flash, NULL, "STM32F205.flash", FLASH_SIZE,
  97                            &error_fatal);
  98     memory_region_init_alias(flash_alias, NULL, "STM32F205.flash.alias",
  99                              flash, 0, FLASH_SIZE);
 100
 101     memory_region_set_readonly(flash, true);
 102     memory_region_set_readonly(flash_alias, true);
 103
 104     memory_region_add_subregion(system_memory, FLASH_BASE_ADDRESS, flash);
 105     memory_region_add_subregion(system_memory, 0, flash_alias);
 106
 107     memory_region_init_ram(sram, NULL, "STM32F205.sram", SRAM_SIZE,
 108                            &error_fatal);
 109     memory_region_add_subregion(system_memory, SRAM_BASE_ADDRESS, sram);
 110
 111     armv7m = DEVICE(&s->armv7m);
 112     qdev_prop_set_uint32(armv7m, "num-irq", 96);
 113     qdev_prop_set_string(armv7m, "cpu-type", s->cpu_type);
 114     qdev_prop_set_bit(armv7m, "enable-bitband", true);
 115     object_property_set_link(OBJECT(&s->armv7m), OBJECT(get_system_memory()),
 116                                      "memory", &error_abort);
 117     object_property_set_bool(OBJECT(&s->armv7m), true, "realized", &err);
 118     if (err != NULL) {
 119         error_propagate(errp, err);
 120         return;
 121     }
 122
 123     /* System configuration controller */
 124     dev = DEVICE(&s->syscfg);
 125     object_property_set_bool(OBJECT(&s->syscfg), true, "realized", &err);
 126     if (err != NULL) {
 127         error_propagate(errp, err);
 128         return;
 129     }
 130     busdev = SYS_BUS_DEVICE(dev);
 131     sysbus_mmio_map(busdev, 0, 0x40013800);
 132     sysbus_connect_irq(busdev, 0, qdev_get_gpio_in(armv7m, 71));
 133
 134     /* Attach UART (uses USART registers) and USART controllers */
 135     for (i = 0; i < STM_NUM_USARTS; i++) {
 136         dev = DEVICE(&(s->usart[i]));
 137         qdev_prop_set_chr(dev, "chardev", serial_hd(i));
 138         object_property_set_bool(OBJECT(&s->usart[i]), true, "realized", &err);
 139         if (err != NULL) {
 140             error_propagate(errp, err);
 141             return;
 142         }
 143         busdev = SYS_BUS_DEVICE(dev);
 144         sysbus_mmio_map(busdev, 0, usart_addr[i]);
 145         sysbus_connect_irq(busdev, 0, qdev_get_gpio_in(armv7m, usart_irq[i]));
 146     }
 147
 148     /* Timer 2 to 5 */
 149     for (i = 0; i < STM_NUM_TIMERS; i++) {
 150         dev = DEVICE(&(s->timer[i]));
 151         qdev_prop_set_uint64(dev, "clock-frequency", 1000000000);
 152         object_property_set_bool(OBJECT(&s->timer[i]), true, "realized", &err);
 153         if (err != NULL) {
 154             error_propagate(errp, err);
 155             return;
 156         }
 157         busdev = SYS_BUS_DEVICE(dev);
 158         sysbus_mmio_map(busdev, 0, timer_addr[i]);
 159         sysbus_connect_irq(busdev, 0, qdev_get_gpio_in(armv7m, timer_irq[i]));
 160     }
 161
 162     /* ADC 1 to 3 */
 163     object_property_set_int(OBJECT(s->adc_irqs), STM_NUM_ADCS,
 164                             "num-lines", &err);
 165     object_property_set_bool(OBJECT(s->adc_irqs), true, "realized", &err);
 166     if (err != NULL) {
 167         error_propagate(errp, err);
 168         return;
 169     }
 170     qdev_connect_gpio_out(DEVICE(s->adc_irqs), 0,
 171                           qdev_get_gpio_in(armv7m, ADC_IRQ));
 172
 173     for (i = 0; i < STM_NUM_ADCS; i++) {
 174         dev = DEVICE(&(s->adc[i]));
 175         object_property_set_bool(OBJECT(&s->adc[i]), true, "realized", &err);
 176         if (err != NULL) {
 177             error_propagate(errp, err);
 178             return;
 179         }
 180         busdev = SYS_BUS_DEVICE(dev);
 181         sysbus_mmio_map(busdev, 0, adc_addr[i]);
 182         sysbus_connect_irq(busdev, 0,
 183                            qdev_get_gpio_in(DEVICE(s->adc_irqs), i));
 184     }
 185
 186     /* SPI 1 and 2 */
 187     for (i = 0; i < STM_NUM_SPIS; i++) {
 188         dev = DEVICE(&(s->spi[i]));
 189         object_property_set_bool(OBJECT(&s->spi[i]), true, "realized", &err);
 190         if (err != NULL) {
 191             error_propagate(errp, err);
 192             return;
 193         }
 194         busdev = SYS_BUS_DEVICE(dev);
 195         sysbus_mmio_map(busdev, 0, spi_addr[i]);
 196         sysbus_connect_irq(busdev, 0, qdev_get_gpio_in(armv7m, spi_irq[i]));
 197     }
 198 }
 199
 200 static Property stm32f205_soc_properties[] = {
 201     DEFINE_PROP_STRING("cpu-type", STM32F205State, cpu_type),
 202     DEFINE_PROP_END_OF_LIST(),
 203 };
 204
 205 static void stm32f205_soc_class_init(ObjectClass *klass, void *data)
 206 {
 207     DeviceClass *dc = DEVICE_CLASS(klass);
 208
 209     dc->realize = stm32f205_soc_realize;
 210     dc->props = stm32f205_soc_properties;
 211 }
 212
 213 static const TypeInfo stm32f205_soc_info = {
 214     .name          = TYPE_STM32F205_SOC,
 215     .parent        = TYPE_SYS_BUS_DEVICE,
 216     .instance_size = sizeof(STM32F205State),
 217     .instance_init = stm32f205_soc_initfn,
 218     .class_init    = stm32f205_soc_class_init,
 219 };
 220
 221 static void stm32f205_soc_types(void)
 222 {
 223     type_register_static(&stm32f205_soc_info);
 224 }
 225
 226 type_init(stm32f205_soc_types)