hw/arm/stm32f405: Add RCC device to stm32f405 SoC
Add the reset and clock controller device to the stm32f405 SoC.
Signed-off-by: Roman Cardenas Rodriguez <rcardenas.rod@gmail.com>
[PMM: tweak commit message]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
diff --git a/docs/system/arm/stm32.rst b/docs/system/arm/stm32.rst
index 3b640f3..ca7a558 100644
--- a/docs/system/arm/stm32.rst
+++ b/docs/system/arm/stm32.rst
@@ -36,6 +36,7 @@
* SPI controller
* System configuration (SYSCFG)
* Timer controller (TIMER)
+ * Reset and Clock Controller (RCC) (STM32F4 only, reset and enable only)
Missing devices
---------------
@@ -53,7 +54,7 @@
* Power supply configuration (PWR)
* Random Number Generator (RNG)
* Real-Time Clock (RTC) controller
- * Reset and Clock Controller (RCC)
+ * Reset and Clock Controller (RCC) (other features than reset and enable)
* Secure Digital Input/Output (SDIO) interface
* USB OTG
* Watchdog controller (IWDG, WWDG)
diff --git a/hw/arm/Kconfig b/hw/arm/Kconfig
index e7b9cfb..f1e9816 100644
--- a/hw/arm/Kconfig
+++ b/hw/arm/Kconfig
@@ -397,6 +397,7 @@
bool
select ARM_V7M
select OR_IRQ
+ select STM32_RCC
select STM32F4XX_SYSCFG
select STM32F4XX_EXTI
diff --git a/hw/arm/stm32f405_soc.c b/hw/arm/stm32f405_soc.c
index 2ad5b79..72ae621 100644
--- a/hw/arm/stm32f405_soc.c
+++ b/hw/arm/stm32f405_soc.c
@@ -30,6 +30,7 @@
#include "hw/qdev-clock.h"
#include "hw/misc/unimp.h"
+#define RCC_ADDR 0x40023800
#define SYSCFG_ADD 0x40013800
static const uint32_t usart_addr[] = { 0x40011000, 0x40004400, 0x40004800,
0x40004C00, 0x40005000, 0x40011400,
@@ -59,6 +60,8 @@
object_initialize_child(obj, "armv7m", &s->armv7m, TYPE_ARMV7M);
+ object_initialize_child(obj, "rcc", &s->rcc, TYPE_STM32_RCC);
+
object_initialize_child(obj, "syscfg", &s->syscfg, TYPE_STM32F4XX_SYSCFG);
for (i = 0; i < STM_NUM_USARTS; i++) {
@@ -160,6 +163,14 @@
return;
}
+ /* Reset and clock controller */
+ dev = DEVICE(&s->rcc);
+ if (!sysbus_realize(SYS_BUS_DEVICE(&s->rcc), errp)) {
+ return;
+ }
+ busdev = SYS_BUS_DEVICE(dev);
+ sysbus_mmio_map(busdev, 0, RCC_ADDR);
+
/* System configuration controller */
dev = DEVICE(&s->syscfg);
if (!sysbus_realize(SYS_BUS_DEVICE(&s->syscfg), errp)) {
@@ -276,7 +287,6 @@
create_unimplemented_device("GPIOH", 0x40021C00, 0x400);
create_unimplemented_device("GPIOI", 0x40022000, 0x400);
create_unimplemented_device("CRC", 0x40023000, 0x400);
- create_unimplemented_device("RCC", 0x40023800, 0x400);
create_unimplemented_device("Flash Int", 0x40023C00, 0x400);
create_unimplemented_device("BKPSRAM", 0x40024000, 0x400);
create_unimplemented_device("DMA1", 0x40026000, 0x400);
diff --git a/include/hw/arm/stm32f405_soc.h b/include/hw/arm/stm32f405_soc.h
index d15c03c..2eeada6 100644
--- a/include/hw/arm/stm32f405_soc.h
+++ b/include/hw/arm/stm32f405_soc.h
@@ -25,6 +25,7 @@
#ifndef HW_ARM_STM32F405_SOC_H
#define HW_ARM_STM32F405_SOC_H
+#include "hw/misc/stm32_rcc.h"
#include "hw/misc/stm32f4xx_syscfg.h"
#include "hw/timer/stm32f2xx_timer.h"
#include "hw/char/stm32f2xx_usart.h"
@@ -55,6 +56,7 @@
ARMv7MState armv7m;
+ STM32RccState rcc;
STM32F4xxSyscfgState syscfg;
STM32F4xxExtiState exti;
STM32F2XXUsartState usart[STM_NUM_USARTS];
