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