hw/arm/stm32f405_soc.c

   1 /*
   2  * STM32F405 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 "exec/address-spaces.h"
  28 #include "sysemu/sysemu.h"
  29 #include "hw/arm/stm32f405_soc.h"
  30 #include "hw/qdev-clock.h"
  31 #include "hw/misc/unimp.h"
  32
  33 #define SYSCFG_ADD                     0x40013800
  34 static const uint32_t usart_addr[] = { 0x40011000, 0x40004400, 0x40004800,
  35                                        0x40004C00, 0x40005000, 0x40011400,
  36                                        0x40007800, 0x40007C00 };
  37 /* At the moment only Timer 2 to 5 are modelled */
  38 static const uint32_t timer_addr[] = { 0x40000000, 0x40000400,
  39                                        0x40000800, 0x40000C00 };
  40 static const uint32_t adc_addr[] = { 0x40012000, 0x40012100, 0x40012200,
  41                                      0x40012300, 0x40012400, 0x40012500 };
  42 static const uint32_t spi_addr[] =   { 0x40013000, 0x40003800, 0x40003C00,
  43                                        0x40013400, 0x40015000, 0x40015400 };
  44 #define EXTI_ADDR                      0x40013C00
  45
  46 #define SYSCFG_IRQ               71
  47 static const int usart_irq[] = { 37, 38, 39, 52, 53, 71, 82, 83 };
  48 static const int timer_irq[] = { 28, 29, 30, 50 };
  49 #define ADC_IRQ 18
  50 static const int spi_irq[] =   { 35, 36, 51, 0, 0, 0 };
  51 static const int exti_irq[] =  { 6, 7, 8, 9, 10, 23, 23, 23, 23, 23, 40,
  52                                  40, 40, 40, 40, 40} ;
  53
  54
  55 static void stm32f405_soc_initfn(Object *obj)
  56 {
  57     STM32F405State *s = STM32F405_SOC(obj);
  58     int i;
  59
  60     object_initialize_child(obj, "armv7m", &s->armv7m, TYPE_ARMV7M);
  61
  62     object_initialize_child(obj, "syscfg", &s->syscfg, TYPE_STM32F4XX_SYSCFG);
  63
  64     for (i = 0; i < STM_NUM_USARTS; i++) {
  65         object_initialize_child(obj, "usart[*]", &s->usart[i],
  66                                 TYPE_STM32F2XX_USART);
  67     }
  68
  69     for (i = 0; i < STM_NUM_TIMERS; i++) {
  70         object_initialize_child(obj, "timer[*]", &s->timer[i],
  71                                 TYPE_STM32F2XX_TIMER);
  72     }
  73
  74     for (i = 0; i < STM_NUM_ADCS; i++) {
  75         object_initialize_child(obj, "adc[*]", &s->adc[i], TYPE_STM32F2XX_ADC);
  76     }
  77
  78     for (i = 0; i < STM_NUM_SPIS; i++) {
  79         object_initialize_child(obj, "spi[*]", &s->spi[i], TYPE_STM32F2XX_SPI);
  80     }
  81
  82     object_initialize_child(obj, "exti", &s->exti, TYPE_STM32F4XX_EXTI);
  83
  84     s->sysclk = qdev_init_clock_in(DEVICE(s), "sysclk", NULL, NULL, 0);
  85     s->refclk = qdev_init_clock_in(DEVICE(s), "refclk", NULL, NULL, 0);
  86 }
  87
  88 static void stm32f405_soc_realize(DeviceState *dev_soc, Error **errp)
  89 {
  90     STM32F405State *s = STM32F405_SOC(dev_soc);
  91     MemoryRegion *system_memory = get_system_memory();
  92     DeviceState *dev, *armv7m;
  93     SysBusDevice *busdev;
  94     Error *err = NULL;
  95     int i;
  96
  97     /*
  98      * We use s->refclk internally and only define it with qdev_init_clock_in()
  99      * so it is correctly parented and not leaked on an init/deinit; it is not
 100      * intended as an externally exposed clock.
 101      */
 102     if (clock_has_source(s->refclk)) {
 103         error_setg(errp, "refclk clock must not be wired up by the board code");
 104         return;
 105     }
 106
 107     if (!clock_has_source(s->sysclk)) {
 108         error_setg(errp, "sysclk clock must be wired up by the board code");
 109         return;
 110     }
 111
 112     /*
 113      * TODO: ideally we should model the SoC RCC and its ability to
 114      * change the sysclk frequency and define different sysclk sources.
 115      */
 116
 117     /* The refclk always runs at frequency HCLK / 8 */
 118     clock_set_mul_div(s->refclk, 8, 1);
 119     clock_set_source(s->refclk, s->sysclk);
 120
 121     memory_region_init_rom(&s->flash, OBJECT(dev_soc), "STM32F405.flash",
 122                            FLASH_SIZE, &err);
 123     if (err != NULL) {
 124         error_propagate(errp, err);
 125         return;
 126     }
 127     memory_region_init_alias(&s->flash_alias, OBJECT(dev_soc),
 128                              "STM32F405.flash.alias", &s->flash, 0,
 129                              FLASH_SIZE);
 130
 131     memory_region_add_subregion(system_memory, FLASH_BASE_ADDRESS, &s->flash);
 132     memory_region_add_subregion(system_memory, 0, &s->flash_alias);
 133
 134     memory_region_init_ram(&s->sram, NULL, "STM32F405.sram", SRAM_SIZE,
 135                            &err);
 136     if (err != NULL) {
 137         error_propagate(errp, err);
 138         return;
 139     }
 140     memory_region_add_subregion(system_memory, SRAM_BASE_ADDRESS, &s->sram);
 141
 142     memory_region_init_ram(&s->ccm, NULL, "STM32F405.ccm", CCM_SIZE,
 143                            &err);
 144     if (err != NULL) {
 145         error_propagate(errp, err);
 146         return;
 147     }
 148     memory_region_add_subregion(system_memory, CCM_BASE_ADDRESS, &s->ccm);
 149
 150     armv7m = DEVICE(&s->armv7m);
 151     qdev_prop_set_uint32(armv7m, "num-irq", 96);
 152     qdev_prop_set_string(armv7m, "cpu-type", s->cpu_type);
 153     qdev_prop_set_bit(armv7m, "enable-bitband", true);
 154     qdev_connect_clock_in(armv7m, "cpuclk", s->sysclk);
 155     qdev_connect_clock_in(armv7m, "refclk", s->refclk);
 156     object_property_set_link(OBJECT(&s->armv7m), "memory",
 157                              OBJECT(system_memory), &error_abort);
 158     if (!sysbus_realize(SYS_BUS_DEVICE(&s->armv7m), errp)) {
 159         return;
 160     }
 161
 162     /* System configuration controller */
 163     dev = DEVICE(&s->syscfg);
 164     if (!sysbus_realize(SYS_BUS_DEVICE(&s->syscfg), errp)) {
 165         return;
 166     }
 167     busdev = SYS_BUS_DEVICE(dev);
 168     sysbus_mmio_map(busdev, 0, SYSCFG_ADD);
 169     sysbus_connect_irq(busdev, 0, qdev_get_gpio_in(armv7m, SYSCFG_IRQ));
 170
 171     /* Attach UART (uses USART registers) and USART controllers */
 172     for (i = 0; i < STM_NUM_USARTS; i++) {
 173         dev = DEVICE(&(s->usart[i]));
 174         qdev_prop_set_chr(dev, "chardev", serial_hd(i));
 175         if (!sysbus_realize(SYS_BUS_DEVICE(&s->usart[i]), errp)) {
 176             return;
 177         }
 178         busdev = SYS_BUS_DEVICE(dev);
 179         sysbus_mmio_map(busdev, 0, usart_addr[i]);
 180         sysbus_connect_irq(busdev, 0, qdev_get_gpio_in(armv7m, usart_irq[i]));
 181     }
 182
 183     /* Timer 2 to 5 */
 184     for (i = 0; i < STM_NUM_TIMERS; i++) {
 185         dev = DEVICE(&(s->timer[i]));
 186         qdev_prop_set_uint64(dev, "clock-frequency", 1000000000);
 187         if (!sysbus_realize(SYS_BUS_DEVICE(&s->timer[i]), errp)) {
 188             return;
 189         }
 190         busdev = SYS_BUS_DEVICE(dev);
 191         sysbus_mmio_map(busdev, 0, timer_addr[i]);
 192         sysbus_connect_irq(busdev, 0, qdev_get_gpio_in(armv7m, timer_irq[i]));
 193     }
 194
 195     /* ADC device, the IRQs are ORed together */
 196     if (!object_initialize_child_with_props(OBJECT(s), "adc-orirq",
 197                                             &s->adc_irqs, sizeof(s->adc_irqs),
 198                                             TYPE_OR_IRQ, errp, NULL)) {
 199         return;
 200     }
 201     object_property_set_int(OBJECT(&s->adc_irqs), "num-lines", STM_NUM_ADCS,
 202                             &error_abort);
 203     if (!qdev_realize(DEVICE(&s->adc_irqs), NULL, errp)) {
 204         return;
 205     }
 206     qdev_connect_gpio_out(DEVICE(&s->adc_irqs), 0,
 207                           qdev_get_gpio_in(armv7m, ADC_IRQ));
 208
 209     for (i = 0; i < STM_NUM_ADCS; i++) {
 210         dev = DEVICE(&(s->adc[i]));
 211         if (!sysbus_realize(SYS_BUS_DEVICE(&s->adc[i]), errp)) {
 212             return;
 213         }
 214         busdev = SYS_BUS_DEVICE(dev);
 215         sysbus_mmio_map(busdev, 0, adc_addr[i]);
 216         sysbus_connect_irq(busdev, 0,
 217                            qdev_get_gpio_in(DEVICE(&s->adc_irqs), i));
 218     }
 219
 220     /* SPI devices */
 221     for (i = 0; i < STM_NUM_SPIS; i++) {
 222         dev = DEVICE(&(s->spi[i]));
 223         if (!sysbus_realize(SYS_BUS_DEVICE(&s->spi[i]), errp)) {
 224             return;
 225         }
 226         busdev = SYS_BUS_DEVICE(dev);
 227         sysbus_mmio_map(busdev, 0, spi_addr[i]);
 228         sysbus_connect_irq(busdev, 0, qdev_get_gpio_in(armv7m, spi_irq[i]));
 229     }
 230
 231     /* EXTI device */
 232     dev = DEVICE(&s->exti);
 233     if (!sysbus_realize(SYS_BUS_DEVICE(&s->exti), errp)) {
 234         return;
 235     }
 236     busdev = SYS_BUS_DEVICE(dev);
 237     sysbus_mmio_map(busdev, 0, EXTI_ADDR);
 238     for (i = 0; i < 16; i++) {
 239         sysbus_connect_irq(busdev, i, qdev_get_gpio_in(armv7m, exti_irq[i]));
 240     }
 241     for (i = 0; i < 16; i++) {
 242         qdev_connect_gpio_out(DEVICE(&s->syscfg), i, qdev_get_gpio_in(dev, i));
 243     }
 244
 245     create_unimplemented_device("timer[7]",    0x40001400, 0x400);
 246     create_unimplemented_device("timer[12]",   0x40001800, 0x400);
 247     create_unimplemented_device("timer[6]",    0x40001000, 0x400);
 248     create_unimplemented_device("timer[13]",   0x40001C00, 0x400);
 249     create_unimplemented_device("timer[14]",   0x40002000, 0x400);
 250     create_unimplemented_device("RTC and BKP", 0x40002800, 0x400);
 251     create_unimplemented_device("WWDG",        0x40002C00, 0x400);
 252     create_unimplemented_device("IWDG",        0x40003000, 0x400);
 253     create_unimplemented_device("I2S2ext",     0x40003000, 0x400);
 254     create_unimplemented_device("I2S3ext",     0x40004000, 0x400);
 255     create_unimplemented_device("I2C1",        0x40005400, 0x400);
 256     create_unimplemented_device("I2C2",        0x40005800, 0x400);
 257     create_unimplemented_device("I2C3",        0x40005C00, 0x400);
 258     create_unimplemented_device("CAN1",        0x40006400, 0x400);
 259     create_unimplemented_device("CAN2",        0x40006800, 0x400);
 260     create_unimplemented_device("PWR",         0x40007000, 0x400);
 261     create_unimplemented_device("DAC",         0x40007400, 0x400);
 262     create_unimplemented_device("timer[1]",    0x40010000, 0x400);
 263     create_unimplemented_device("timer[8]",    0x40010400, 0x400);
 264     create_unimplemented_device("SDIO",        0x40012C00, 0x400);
 265     create_unimplemented_device("timer[9]",    0x40014000, 0x400);
 266     create_unimplemented_device("timer[10]",   0x40014400, 0x400);
 267     create_unimplemented_device("timer[11]",   0x40014800, 0x400);
 268     create_unimplemented_device("GPIOA",       0x40020000, 0x400);
 269     create_unimplemented_device("GPIOB",       0x40020400, 0x400);
 270     create_unimplemented_device("GPIOC",       0x40020800, 0x400);
 271     create_unimplemented_device("GPIOD",       0x40020C00, 0x400);
 272     create_unimplemented_device("GPIOE",       0x40021000, 0x400);
 273     create_unimplemented_device("GPIOF",       0x40021400, 0x400);
 274     create_unimplemented_device("GPIOG",       0x40021800, 0x400);
 275     create_unimplemented_device("GPIOH",       0x40021C00, 0x400);
 276     create_unimplemented_device("GPIOI",       0x40022000, 0x400);
 277     create_unimplemented_device("CRC",         0x40023000, 0x400);
 278     create_unimplemented_device("RCC",         0x40023800, 0x400);
 279     create_unimplemented_device("Flash Int",   0x40023C00, 0x400);
 280     create_unimplemented_device("BKPSRAM",     0x40024000, 0x400);
 281     create_unimplemented_device("DMA1",        0x40026000, 0x400);
 282     create_unimplemented_device("DMA2",        0x40026400, 0x400);
 283     create_unimplemented_device("Ethernet",    0x40028000, 0x1400);
 284     create_unimplemented_device("USB OTG HS",  0x40040000, 0x30000);
 285     create_unimplemented_device("USB OTG FS",  0x50000000, 0x31000);
 286     create_unimplemented_device("DCMI",        0x50050000, 0x400);
 287     create_unimplemented_device("RNG",         0x50060800, 0x400);
 288 }
 289
 290 static Property stm32f405_soc_properties[] = {
 291     DEFINE_PROP_STRING("cpu-type", STM32F405State, cpu_type),
 292     DEFINE_PROP_END_OF_LIST(),
 293 };
 294
 295 static void stm32f405_soc_class_init(ObjectClass *klass, void *data)
 296 {
 297     DeviceClass *dc = DEVICE_CLASS(klass);
 298
 299     dc->realize = stm32f405_soc_realize;
 300     device_class_set_props(dc, stm32f405_soc_properties);
 301     /* No vmstate or reset required: device has no internal state */
 302 }
 303
 304 static const TypeInfo stm32f405_soc_info = {
 305     .name          = TYPE_STM32F405_SOC,
 306     .parent        = TYPE_SYS_BUS_DEVICE,
 307     .instance_size = sizeof(STM32F405State),
 308     .instance_init = stm32f405_soc_initfn,
 309     .class_init    = stm32f405_soc_class_init,
 310 };
 311
 312 static void stm32f405_soc_types(void)
 313 {
 314     type_register_static(&stm32f405_soc_info);
 315 }
 316
 317 type_init(stm32f405_soc_types)