/*
* STM32F205 SoC
*
* Copyright (c) 2014 Alistair Francis <alistair@alistair23.me>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "hw/arm/arm.h"
#include "exec/address-spaces.h"
#include "hw/arm/stm32f205_soc.h"
/* At the moment only Timer 2 to 5 are modelled */
static const uint32_t timer_addr[STM_NUM_TIMERS] = { 0x40000000, 0x40000400,
0x40000800, 0x40000C00 };
static const uint32_t usart_addr[STM_NUM_USARTS] = { 0x40011000, 0x40004400,
0x40004800, 0x40004C00, 0x40005000, 0x40011400 };
static const int timer_irq[STM_NUM_TIMERS] = {28, 29, 30, 50};
static const int usart_irq[STM_NUM_USARTS] = {37, 38, 39, 52, 53, 71};
static void stm32f205_soc_initfn(Object *obj)
{
STM32F205State *s = STM32F205_SOC(obj);
int i;
object_initialize(&s->syscfg, sizeof(s->syscfg), TYPE_STM32F2XX_SYSCFG);
qdev_set_parent_bus(DEVICE(&s->syscfg), sysbus_get_default());
for (i = 0; i < STM_NUM_USARTS; i++) {
object_initialize(&s->usart[i], sizeof(s->usart[i]),
TYPE_STM32F2XX_USART);
qdev_set_parent_bus(DEVICE(&s->usart[i]), sysbus_get_default());
}
for (i = 0; i < STM_NUM_TIMERS; i++) {
object_initialize(&s->timer[i], sizeof(s->timer[i]),
TYPE_STM32F2XX_TIMER);
qdev_set_parent_bus(DEVICE(&s->timer[i]), sysbus_get_default());
}
}
static void stm32f205_soc_realize(DeviceState *dev_soc, Error **errp)
{
STM32F205State *s = STM32F205_SOC(dev_soc);
DeviceState *syscfgdev, *usartdev, *timerdev, *nvic;
SysBusDevice *syscfgbusdev, *usartbusdev, *timerbusdev;
Error *err = NULL;
int i;
MemoryRegion *system_memory = get_system_memory();
MemoryRegion *sram = g_new(MemoryRegion, 1);
MemoryRegion *flash = g_new(MemoryRegion, 1);
MemoryRegion *flash_alias = g_new(MemoryRegion, 1);
memory_region_init_ram(flash, NULL, "STM32F205.flash", FLASH_SIZE,
&error_fatal);
memory_region_init_alias(flash_alias, NULL, "STM32F205.flash.alias",
flash, 0, FLASH_SIZE);
vmstate_register_ram_global(flash);
memory_region_set_readonly(flash, true);
memory_region_set_readonly(flash_alias, true);
memory_region_add_subregion(system_memory, FLASH_BASE_ADDRESS, flash);
memory_region_add_subregion(system_memory, 0, flash_alias);
memory_region_init_ram(sram, NULL, "STM32F205.sram", SRAM_SIZE,
&error_fatal);
vmstate_register_ram_global(sram);
memory_region_add_subregion(system_memory, SRAM_BASE_ADDRESS, sram);
nvic = armv7m_init(get_system_memory(), FLASH_SIZE, 96,
s->kernel_filename, s->cpu_model);
/* System configuration controller */
syscfgdev = DEVICE(&s->syscfg);
object_property_set_bool(OBJECT(&s->syscfg), true, "realized", &err);
if (err != NULL) {
error_propagate(errp, err);
return;
}
syscfgbusdev = SYS_BUS_DEVICE(syscfgdev);
sysbus_mmio_map(syscfgbusdev, 0, 0x40013800);
sysbus_connect_irq(syscfgbusdev, 0, qdev_get_gpio_in(nvic, 71));
/* Attach UART (uses USART registers) and USART controllers */
for (i = 0; i < STM_NUM_USARTS; i++) {
usartdev = DEVICE(&(s->usart[i]));
object_property_set_bool(OBJECT(&s->usart[i]), true, "realized", &err);
if (err != NULL) {
error_propagate(errp, err);
return;
}
usartbusdev = SYS_BUS_DEVICE(usartdev);
sysbus_mmio_map(usartbusdev, 0, usart_addr[i]);
sysbus_connect_irq(usartbusdev, 0,
qdev_get_gpio_in(nvic, usart_irq[i]));
}
/* Timer 2 to 5 */
for (i = 0; i < STM_NUM_TIMERS; i++) {
timerdev = DEVICE(&(s->timer[i]));
qdev_prop_set_uint64(timerdev, "clock-frequency", 1000000000);
object_property_set_bool(OBJECT(&s->timer[i]), true, "realized", &err);
if (err != NULL) {
error_propagate(errp, err);
return;
}
timerbusdev = SYS_BUS_DEVICE(timerdev);
sysbus_mmio_map(timerbusdev, 0, timer_addr[i]);
sysbus_connect_irq(timerbusdev, 0,
qdev_get_gpio_in(nvic, timer_irq[i]));
}
}
static Property stm32f205_soc_properties[] = {
DEFINE_PROP_STRING("kernel-filename", STM32F205State, kernel_filename),
DEFINE_PROP_STRING("cpu-model", STM32F205State, cpu_model),
DEFINE_PROP_END_OF_LIST(),
};
static void stm32f205_soc_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->realize = stm32f205_soc_realize;
dc->props = stm32f205_soc_properties;
}
static const TypeInfo stm32f205_soc_info = {
.name = TYPE_STM32F205_SOC,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(STM32F205State),
.instance_init = stm32f205_soc_initfn,
.class_init = stm32f205_soc_class_init,
};
static void stm32f205_soc_types(void)
{
type_register_static(&stm32f205_soc_info);
}
type_init(stm32f205_soc_types)
