qemu/hw/arm/stm32f100_soc.c
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   1/*
   2 * STM32F100 SoC
   3 *
   4 * Copyright (c) 2021 Alexandre Iooss <erdnaxe@crans.org>
   5 * Copyright (c) 2014 Alistair Francis <alistair@alistair23.me>
   6 *
   7 * Permission is hereby granted, free of charge, to any person obtaining a copy
   8 * of this software and associated documentation files (the "Software"), to deal
   9 * in the Software without restriction, including without limitation the rights
  10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  11 * copies of the Software, and to permit persons to whom the Software is
  12 * furnished to do so, subject to the following conditions:
  13 *
  14 * The above copyright notice and this permission notice shall be included in
  15 * all copies or substantial portions of the Software.
  16 *
  17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  23 * THE SOFTWARE.
  24 */
  25
  26#include "qemu/osdep.h"
  27#include "qapi/error.h"
  28#include "qemu/module.h"
  29#include "hw/arm/boot.h"
  30#include "exec/address-spaces.h"
  31#include "hw/arm/stm32f100_soc.h"
  32#include "hw/qdev-properties.h"
  33#include "hw/misc/unimp.h"
  34#include "sysemu/sysemu.h"
  35
  36/* stm32f100_soc implementation is derived from stm32f205_soc */
  37
  38static const uint32_t usart_addr[STM_NUM_USARTS] = { 0x40013800, 0x40004400,
  39    0x40004800 };
  40static const uint32_t spi_addr[STM_NUM_SPIS] = { 0x40013000, 0x40003800 };
  41
  42static const int usart_irq[STM_NUM_USARTS] = {37, 38, 39};
  43static const int spi_irq[STM_NUM_SPIS] = {35, 36};
  44
  45static void stm32f100_soc_initfn(Object *obj)
  46{
  47    STM32F100State *s = STM32F100_SOC(obj);
  48    int i;
  49
  50    object_initialize_child(obj, "armv7m", &s->armv7m, TYPE_ARMV7M);
  51
  52    for (i = 0; i < STM_NUM_USARTS; i++) {
  53        object_initialize_child(obj, "usart[*]", &s->usart[i],
  54                                TYPE_STM32F2XX_USART);
  55    }
  56
  57    for (i = 0; i < STM_NUM_SPIS; i++) {
  58        object_initialize_child(obj, "spi[*]", &s->spi[i], TYPE_STM32F2XX_SPI);
  59    }
  60}
  61
  62static void stm32f100_soc_realize(DeviceState *dev_soc, Error **errp)
  63{
  64    STM32F100State *s = STM32F100_SOC(dev_soc);
  65    DeviceState *dev, *armv7m;
  66    SysBusDevice *busdev;
  67    int i;
  68
  69    MemoryRegion *system_memory = get_system_memory();
  70    MemoryRegion *sram = g_new(MemoryRegion, 1);
  71    MemoryRegion *flash = g_new(MemoryRegion, 1);
  72    MemoryRegion *flash_alias = g_new(MemoryRegion, 1);
  73
  74    /*
  75     * Init flash region
  76     * Flash starts at 0x08000000 and then is aliased to boot memory at 0x0
  77     */
  78    memory_region_init_rom(flash, OBJECT(dev_soc), "STM32F100.flash",
  79                           FLASH_SIZE, &error_fatal);
  80    memory_region_init_alias(flash_alias, OBJECT(dev_soc),
  81                             "STM32F100.flash.alias", flash, 0, FLASH_SIZE);
  82    memory_region_add_subregion(system_memory, FLASH_BASE_ADDRESS, flash);
  83    memory_region_add_subregion(system_memory, 0, flash_alias);
  84
  85    /* Init SRAM region */
  86    memory_region_init_ram(sram, NULL, "STM32F100.sram", SRAM_SIZE,
  87                           &error_fatal);
  88    memory_region_add_subregion(system_memory, SRAM_BASE_ADDRESS, sram);
  89
  90    /* Init ARMv7m */
  91    armv7m = DEVICE(&s->armv7m);
  92    qdev_prop_set_uint32(armv7m, "num-irq", 61);
  93    qdev_prop_set_string(armv7m, "cpu-type", s->cpu_type);
  94    qdev_prop_set_bit(armv7m, "enable-bitband", true);
  95    object_property_set_link(OBJECT(&s->armv7m), "memory",
  96                             OBJECT(get_system_memory()), &error_abort);
  97    if (!sysbus_realize(SYS_BUS_DEVICE(&s->armv7m), errp)) {
  98        return;
  99    }
 100
 101    /* Attach UART (uses USART registers) and USART controllers */
 102    for (i = 0; i < STM_NUM_USARTS; i++) {
 103        dev = DEVICE(&(s->usart[i]));
 104        qdev_prop_set_chr(dev, "chardev", serial_hd(i));
 105        if (!sysbus_realize(SYS_BUS_DEVICE(&s->usart[i]), errp)) {
 106            return;
 107        }
 108        busdev = SYS_BUS_DEVICE(dev);
 109        sysbus_mmio_map(busdev, 0, usart_addr[i]);
 110        sysbus_connect_irq(busdev, 0, qdev_get_gpio_in(armv7m, usart_irq[i]));
 111    }
 112
 113    /* SPI 1 and 2 */
 114    for (i = 0; i < STM_NUM_SPIS; i++) {
 115        dev = DEVICE(&(s->spi[i]));
 116        if (!sysbus_realize(SYS_BUS_DEVICE(&s->spi[i]), errp)) {
 117            return;
 118        }
 119        busdev = SYS_BUS_DEVICE(dev);
 120        sysbus_mmio_map(busdev, 0, spi_addr[i]);
 121        sysbus_connect_irq(busdev, 0, qdev_get_gpio_in(armv7m, spi_irq[i]));
 122    }
 123
 124    create_unimplemented_device("timer[2]",  0x40000000, 0x400);
 125    create_unimplemented_device("timer[3]",  0x40000400, 0x400);
 126    create_unimplemented_device("timer[4]",  0x40000800, 0x400);
 127    create_unimplemented_device("timer[6]",  0x40001000, 0x400);
 128    create_unimplemented_device("timer[7]",  0x40001400, 0x400);
 129    create_unimplemented_device("RTC",       0x40002800, 0x400);
 130    create_unimplemented_device("WWDG",      0x40002C00, 0x400);
 131    create_unimplemented_device("IWDG",      0x40003000, 0x400);
 132    create_unimplemented_device("I2C1",      0x40005400, 0x400);
 133    create_unimplemented_device("I2C2",      0x40005800, 0x400);
 134    create_unimplemented_device("BKP",       0x40006C00, 0x400);
 135    create_unimplemented_device("PWR",       0x40007000, 0x400);
 136    create_unimplemented_device("DAC",       0x40007400, 0x400);
 137    create_unimplemented_device("CEC",       0x40007800, 0x400);
 138    create_unimplemented_device("AFIO",      0x40010000, 0x400);
 139    create_unimplemented_device("EXTI",      0x40010400, 0x400);
 140    create_unimplemented_device("GPIOA",     0x40010800, 0x400);
 141    create_unimplemented_device("GPIOB",     0x40010C00, 0x400);
 142    create_unimplemented_device("GPIOC",     0x40011000, 0x400);
 143    create_unimplemented_device("GPIOD",     0x40011400, 0x400);
 144    create_unimplemented_device("GPIOE",     0x40011800, 0x400);
 145    create_unimplemented_device("ADC1",      0x40012400, 0x400);
 146    create_unimplemented_device("timer[1]",  0x40012C00, 0x400);
 147    create_unimplemented_device("timer[15]", 0x40014000, 0x400);
 148    create_unimplemented_device("timer[16]", 0x40014400, 0x400);
 149    create_unimplemented_device("timer[17]", 0x40014800, 0x400);
 150    create_unimplemented_device("DMA",       0x40020000, 0x400);
 151    create_unimplemented_device("RCC",       0x40021000, 0x400);
 152    create_unimplemented_device("Flash Int", 0x40022000, 0x400);
 153    create_unimplemented_device("CRC",       0x40023000, 0x400);
 154}
 155
 156static Property stm32f100_soc_properties[] = {
 157    DEFINE_PROP_STRING("cpu-type", STM32F100State, cpu_type),
 158    DEFINE_PROP_END_OF_LIST(),
 159};
 160
 161static void stm32f100_soc_class_init(ObjectClass *klass, void *data)
 162{
 163    DeviceClass *dc = DEVICE_CLASS(klass);
 164
 165    dc->realize = stm32f100_soc_realize;
 166    device_class_set_props(dc, stm32f100_soc_properties);
 167}
 168
 169static const TypeInfo stm32f100_soc_info = {
 170    .name          = TYPE_STM32F100_SOC,
 171    .parent        = TYPE_SYS_BUS_DEVICE,
 172    .instance_size = sizeof(STM32F100State),
 173    .instance_init = stm32f100_soc_initfn,
 174    .class_init    = stm32f100_soc_class_init,
 175};
 176
 177static void stm32f100_soc_types(void)
 178{
 179    type_register_static(&stm32f100_soc_info);
 180}
 181
 182type_init(stm32f100_soc_types)
 183