hw/misc/stm32l4x5_rcc: Implement STM32L4x5_RCC skeleton
Add the necessary files to add a simple RCC implementation with just
reads from and writes to registers. Also instantiate the RCC in the
STM32L4x5_SoC. It is needed for accurate emulation of all the SoC
clocks and timers.
Signed-off-by: Arnaud Minier <arnaud.minier@telecom-paris.fr>
Signed-off-by: Inès Varhol <ines.varhol@telecom-paris.fr>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20240303140643.81957-2-arnaud.minier@telecom-paris.fr
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
diff --git a/MAINTAINERS b/MAINTAINERS
index 65dfdc9..4183f2f 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1130,7 +1130,10 @@
L: qemu-arm@nongnu.org
S: Maintained
F: hw/arm/stm32l4x5_soc.c
-F: include/hw/arm/stm32l4x5_soc.h
+F: hw/misc/stm32l4x5_exti.c
+F: hw/misc/stm32l4x5_syscfg.c
+F: hw/misc/stm32l4x5_rcc.c
+F: include/hw/*/stm32l4x5_*.h
B-L475E-IOT01A IoT Node
M: Arnaud Minier <arnaud.minier@telecom-paris.fr>
diff --git a/docs/system/arm/b-l475e-iot01a.rst b/docs/system/arm/b-l475e-iot01a.rst
index 1a021b3..b857a56 100644
--- a/docs/system/arm/b-l475e-iot01a.rst
+++ b/docs/system/arm/b-l475e-iot01a.rst
@@ -17,13 +17,13 @@
- Cortex-M4F based STM32L4x5 SoC
- STM32L4x5 EXTI (Extended interrupts and events controller)
- STM32L4x5 SYSCFG (System configuration controller)
+- STM32L4x5 RCC (Reset and clock control)
Missing devices
"""""""""""""""
The B-L475E-IOT01A does *not* support the following devices:
-- Reset and clock control (RCC)
- Serial ports (UART)
- General-purpose I/Os (GPIO)
- Analog to Digital Converter (ADC)
diff --git a/hw/arm/Kconfig b/hw/arm/Kconfig
index 3c15737..d58d820 100644
--- a/hw/arm/Kconfig
+++ b/hw/arm/Kconfig
@@ -475,6 +475,7 @@
select OR_IRQ
select STM32L4X5_SYSCFG
select STM32L4X5_EXTI
+ select STM32L4X5_RCC
config XLNX_ZYNQMP_ARM
bool
diff --git a/hw/arm/stm32l4x5_soc.c b/hw/arm/stm32l4x5_soc.c
index d1786e0..cb14705 100644
--- a/hw/arm/stm32l4x5_soc.c
+++ b/hw/arm/stm32l4x5_soc.c
@@ -76,6 +76,8 @@
-1, -1, -1, -1, /* PVM[1..4] OR gate 1 */
78 /* LCD wakeup, Direct */
};
+#define RCC_BASE_ADDRESS 0x40021000
+#define RCC_IRQ 5
static const int exti_or_gates_out[NUM_EXTI_OR_GATES] = {
23, 40, 63, 1,
@@ -107,6 +109,7 @@
TYPE_OR_IRQ);
}
object_initialize_child(obj, "syscfg", &s->syscfg, TYPE_STM32L4X5_SYSCFG);
+ object_initialize_child(obj, "rcc", &s->rcc, TYPE_STM32L4X5_RCC);
s->sysclk = qdev_init_clock_in(DEVICE(s), "sysclk", NULL, NULL, 0);
s->refclk = qdev_init_clock_in(DEVICE(s), "refclk", NULL, NULL, 0);
@@ -244,6 +247,14 @@
qdev_get_gpio_in(DEVICE(&s->exti), i));
}
+ /* RCC device */
+ busdev = SYS_BUS_DEVICE(&s->rcc);
+ if (!sysbus_realize(busdev, errp)) {
+ return;
+ }
+ sysbus_mmio_map(busdev, 0, RCC_BASE_ADDRESS);
+ sysbus_connect_irq(busdev, 0, qdev_get_gpio_in(armv7m, RCC_IRQ));
+
/* APB1 BUS */
create_unimplemented_device("TIM2", 0x40000000, 0x400);
create_unimplemented_device("TIM3", 0x40000400, 0x400);
@@ -306,7 +317,6 @@
create_unimplemented_device("DMA1", 0x40020000, 0x400);
create_unimplemented_device("DMA2", 0x40020400, 0x400);
/* RESERVED: 0x40020800, 0x800 */
- create_unimplemented_device("RCC", 0x40021000, 0x400);
/* RESERVED: 0x40021400, 0xC00 */
create_unimplemented_device("FLASH", 0x40022000, 0x400);
/* RESERVED: 0x40022400, 0xC00 */
diff --git a/hw/misc/Kconfig b/hw/misc/Kconfig
index 83ad849..1e08785 100644
--- a/hw/misc/Kconfig
+++ b/hw/misc/Kconfig
@@ -97,6 +97,9 @@
config STM32L4X5_SYSCFG
bool
+config STM32L4X5_RCC
+ bool
+
config MIPS_ITU
bool
diff --git a/hw/misc/meson.build b/hw/misc/meson.build
index 7466868..265b2c2 100644
--- a/hw/misc/meson.build
+++ b/hw/misc/meson.build
@@ -113,6 +113,7 @@
system_ss.add(when: 'CONFIG_STM32F4XX_EXTI', if_true: files('stm32f4xx_exti.c'))
system_ss.add(when: 'CONFIG_STM32L4X5_EXTI', if_true: files('stm32l4x5_exti.c'))
system_ss.add(when: 'CONFIG_STM32L4X5_SYSCFG', if_true: files('stm32l4x5_syscfg.c'))
+system_ss.add(when: 'CONFIG_STM32L4X5_RCC', if_true: files('stm32l4x5_rcc.c'))
system_ss.add(when: 'CONFIG_MPS2_FPGAIO', if_true: files('mps2-fpgaio.c'))
system_ss.add(when: 'CONFIG_MPS2_SCC', if_true: files('mps2-scc.c'))
diff --git a/hw/misc/stm32l4x5_rcc.c b/hw/misc/stm32l4x5_rcc.c
new file mode 100644
index 0000000..269e50b
--- /dev/null
+++ b/hw/misc/stm32l4x5_rcc.c
@@ -0,0 +1,446 @@
+/*
+ * STM32L4X5 RCC (Reset and clock control)
+ *
+ * Copyright (c) 2023 Arnaud Minier <arnaud.minier@telecom-paris.fr>
+ * Copyright (c) 2023 Inès Varhol <ines.varhol@telecom-paris.fr>
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ * The reference used is the STMicroElectronics RM0351 Reference manual
+ * for STM32L4x5 and STM32L4x6 advanced Arm ® -based 32-bit MCUs.
+ *
+ * Inspired by the BCM2835 CPRMAN clock manager implementation by Luc Michel.
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/log.h"
+#include "qemu/module.h"
+#include "qemu/timer.h"
+#include "qapi/error.h"
+#include "migration/vmstate.h"
+#include "hw/misc/stm32l4x5_rcc.h"
+#include "hw/misc/stm32l4x5_rcc_internals.h"
+#include "hw/clock.h"
+#include "hw/irq.h"
+#include "hw/qdev-clock.h"
+#include "hw/qdev-properties.h"
+#include "hw/qdev-properties-system.h"
+#include "trace.h"
+
+#define HSE_DEFAULT_FRQ 48000000ULL
+#define HSI_FRQ 16000000ULL
+#define MSI_DEFAULT_FRQ 4000000ULL
+#define LSE_FRQ 32768ULL
+#define LSI_FRQ 32000ULL
+
+static void rcc_update_irq(Stm32l4x5RccState *s)
+{
+ if (s->cifr & CIFR_IRQ_MASK) {
+ qemu_irq_raise(s->irq);
+ } else {
+ qemu_irq_lower(s->irq);
+ }
+}
+
+static void stm32l4x5_rcc_reset_hold(Object *obj)
+{
+ Stm32l4x5RccState *s = STM32L4X5_RCC(obj);
+ s->cr = 0x00000063;
+ /*
+ * Factory-programmed calibration data
+ * From the reference manual: 0x10XX 00XX
+ * Value taken from a real card.
+ */
+ s->icscr = 0x106E0082;
+ s->cfgr = 0x0;
+ s->pllcfgr = 0x00001000;
+ s->pllsai1cfgr = 0x00001000;
+ s->pllsai2cfgr = 0x00001000;
+ s->cier = 0x0;
+ s->cifr = 0x0;
+ s->ahb1rstr = 0x0;
+ s->ahb2rstr = 0x0;
+ s->ahb3rstr = 0x0;
+ s->apb1rstr1 = 0x0;
+ s->apb1rstr2 = 0x0;
+ s->apb2rstr = 0x0;
+ s->ahb1enr = 0x00000100;
+ s->ahb2enr = 0x0;
+ s->ahb3enr = 0x0;
+ s->apb1enr1 = 0x0;
+ s->apb1enr2 = 0x0;
+ s->apb2enr = 0x0;
+ s->ahb1smenr = 0x00011303;
+ s->ahb2smenr = 0x000532FF;
+ s->ahb3smenr = 0x00000101;
+ s->apb1smenr1 = 0xF2FECA3F;
+ s->apb1smenr2 = 0x00000025;
+ s->apb2smenr = 0x01677C01;
+ s->ccipr = 0x0;
+ s->bdcr = 0x0;
+ s->csr = 0x0C000600;
+}
+
+static uint64_t stm32l4x5_rcc_read(void *opaque, hwaddr addr,
+ unsigned int size)
+{
+ Stm32l4x5RccState *s = opaque;
+ uint64_t retvalue = 0;
+
+ switch (addr) {
+ case A_CR:
+ retvalue = s->cr;
+ break;
+ case A_ICSCR:
+ retvalue = s->icscr;
+ break;
+ case A_CFGR:
+ retvalue = s->cfgr;
+ break;
+ case A_PLLCFGR:
+ retvalue = s->pllcfgr;
+ break;
+ case A_PLLSAI1CFGR:
+ retvalue = s->pllsai1cfgr;
+ break;
+ case A_PLLSAI2CFGR:
+ retvalue = s->pllsai2cfgr;
+ break;
+ case A_CIER:
+ retvalue = s->cier;
+ break;
+ case A_CIFR:
+ retvalue = s->cifr;
+ break;
+ case A_CICR:
+ /* CICR is write only, return the reset value = 0 */
+ break;
+ case A_AHB1RSTR:
+ retvalue = s->ahb1rstr;
+ break;
+ case A_AHB2RSTR:
+ retvalue = s->ahb2rstr;
+ break;
+ case A_AHB3RSTR:
+ retvalue = s->ahb3rstr;
+ break;
+ case A_APB1RSTR1:
+ retvalue = s->apb1rstr1;
+ break;
+ case A_APB1RSTR2:
+ retvalue = s->apb1rstr2;
+ break;
+ case A_APB2RSTR:
+ retvalue = s->apb2rstr;
+ break;
+ case A_AHB1ENR:
+ retvalue = s->ahb1enr;
+ break;
+ case A_AHB2ENR:
+ retvalue = s->ahb2enr;
+ break;
+ case A_AHB3ENR:
+ retvalue = s->ahb3enr;
+ break;
+ case A_APB1ENR1:
+ retvalue = s->apb1enr1;
+ break;
+ case A_APB1ENR2:
+ retvalue = s->apb1enr2;
+ break;
+ case A_APB2ENR:
+ retvalue = s->apb2enr;
+ break;
+ case A_AHB1SMENR:
+ retvalue = s->ahb1smenr;
+ break;
+ case A_AHB2SMENR:
+ retvalue = s->ahb2smenr;
+ break;
+ case A_AHB3SMENR:
+ retvalue = s->ahb3smenr;
+ break;
+ case A_APB1SMENR1:
+ retvalue = s->apb1smenr1;
+ break;
+ case A_APB1SMENR2:
+ retvalue = s->apb1smenr2;
+ break;
+ case A_APB2SMENR:
+ retvalue = s->apb2smenr;
+ break;
+ case A_CCIPR:
+ retvalue = s->ccipr;
+ break;
+ case A_BDCR:
+ retvalue = s->bdcr;
+ break;
+ case A_CSR:
+ retvalue = s->csr;
+ break;
+ default:
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: Bad offset 0x%"HWADDR_PRIx"\n", __func__, addr);
+ break;
+ }
+
+ trace_stm32l4x5_rcc_read(addr, retvalue);
+
+ return retvalue;
+}
+
+static void stm32l4x5_rcc_write(void *opaque, hwaddr addr,
+ uint64_t val64, unsigned int size)
+{
+ Stm32l4x5RccState *s = opaque;
+ const uint32_t value = val64;
+
+ trace_stm32l4x5_rcc_write(addr, value);
+
+ switch (addr) {
+ case A_CR:
+ s->cr = (s->cr & CR_READ_SET_MASK) |
+ (value & (CR_READ_SET_MASK | ~CR_READ_ONLY_MASK));
+ break;
+ case A_ICSCR:
+ s->icscr = value & ~ICSCR_READ_ONLY_MASK;
+ break;
+ case A_CFGR:
+ s->cfgr = value & ~CFGR_READ_ONLY_MASK;
+ break;
+ case A_PLLCFGR:
+ s->pllcfgr = value;
+ break;
+ case A_PLLSAI1CFGR:
+ s->pllsai1cfgr = value;
+ break;
+ case A_PLLSAI2CFGR:
+ s->pllsai2cfgr = value;
+ break;
+ case A_CIER:
+ s->cier = value;
+ break;
+ case A_CIFR:
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: Write attempt into read-only register (CIFR) 0x%"PRIx32"\n",
+ __func__, value);
+ break;
+ case A_CICR:
+ /* Clear interrupt flags by writing a 1 to the CICR register */
+ s->cifr &= ~value;
+ rcc_update_irq(s);
+ break;
+ /* Reset behaviors are not implemented */
+ case A_AHB1RSTR:
+ s->ahb1rstr = value;
+ break;
+ case A_AHB2RSTR:
+ s->ahb2rstr = value;
+ break;
+ case A_AHB3RSTR:
+ s->ahb3rstr = value;
+ break;
+ case A_APB1RSTR1:
+ s->apb1rstr1 = value;
+ break;
+ case A_APB1RSTR2:
+ s->apb1rstr2 = value;
+ break;
+ case A_APB2RSTR:
+ s->apb2rstr = value;
+ break;
+ case A_AHB1ENR:
+ s->ahb1enr = value;
+ break;
+ case A_AHB2ENR:
+ s->ahb2enr = value;
+ break;
+ case A_AHB3ENR:
+ s->ahb3enr = value;
+ break;
+ case A_APB1ENR1:
+ s->apb1enr1 = value;
+ break;
+ case A_APB1ENR2:
+ s->apb1enr2 = value;
+ break;
+ case A_APB2ENR:
+ s->apb2enr = (s->apb2enr & APB2ENR_READ_SET_MASK) | value;
+ break;
+ /* Behaviors for Sleep and Stop modes are not implemented */
+ case A_AHB1SMENR:
+ s->ahb1smenr = value;
+ break;
+ case A_AHB2SMENR:
+ s->ahb2smenr = value;
+ break;
+ case A_AHB3SMENR:
+ s->ahb3smenr = value;
+ break;
+ case A_APB1SMENR1:
+ s->apb1smenr1 = value;
+ break;
+ case A_APB1SMENR2:
+ s->apb1smenr2 = value;
+ break;
+ case A_APB2SMENR:
+ s->apb2smenr = value;
+ break;
+ case A_CCIPR:
+ s->ccipr = value;
+ break;
+ case A_BDCR:
+ s->bdcr = value & ~BDCR_READ_ONLY_MASK;
+ break;
+ case A_CSR:
+ s->csr = value & ~CSR_READ_ONLY_MASK;
+ break;
+ default:
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: Bad offset 0x%"HWADDR_PRIx"\n", __func__, addr);
+ }
+}
+
+static const MemoryRegionOps stm32l4x5_rcc_ops = {
+ .read = stm32l4x5_rcc_read,
+ .write = stm32l4x5_rcc_write,
+ .endianness = DEVICE_NATIVE_ENDIAN,
+ .valid = {
+ .max_access_size = 4,
+ .min_access_size = 4,
+ .unaligned = false
+ },
+ .impl = {
+ .max_access_size = 4,
+ .min_access_size = 4,
+ .unaligned = false
+ },
+};
+
+static const ClockPortInitArray stm32l4x5_rcc_clocks = {
+ QDEV_CLOCK_IN(Stm32l4x5RccState, hsi16_rc, NULL, 0),
+ QDEV_CLOCK_IN(Stm32l4x5RccState, msi_rc, NULL, 0),
+ QDEV_CLOCK_IN(Stm32l4x5RccState, hse, NULL, 0),
+ QDEV_CLOCK_IN(Stm32l4x5RccState, lsi_rc, NULL, 0),
+ QDEV_CLOCK_IN(Stm32l4x5RccState, lse_crystal, NULL, 0),
+ QDEV_CLOCK_IN(Stm32l4x5RccState, sai1_extclk, NULL, 0),
+ QDEV_CLOCK_IN(Stm32l4x5RccState, sai2_extclk, NULL, 0),
+ QDEV_CLOCK_END
+};
+
+
+static void stm32l4x5_rcc_init(Object *obj)
+{
+ Stm32l4x5RccState *s = STM32L4X5_RCC(obj);
+
+ sysbus_init_irq(SYS_BUS_DEVICE(obj), &s->irq);
+
+ memory_region_init_io(&s->mmio, obj, &stm32l4x5_rcc_ops, s,
+ TYPE_STM32L4X5_RCC, 0x400);
+ sysbus_init_mmio(SYS_BUS_DEVICE(obj), &s->mmio);
+
+ qdev_init_clocks(DEVICE(s), stm32l4x5_rcc_clocks);
+
+ s->gnd = clock_new(obj, "gnd");
+}
+
+static const VMStateDescription vmstate_stm32l4x5_rcc = {
+ .name = TYPE_STM32L4X5_RCC,
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT32(cr, Stm32l4x5RccState),
+ VMSTATE_UINT32(icscr, Stm32l4x5RccState),
+ VMSTATE_UINT32(cfgr, Stm32l4x5RccState),
+ VMSTATE_UINT32(pllcfgr, Stm32l4x5RccState),
+ VMSTATE_UINT32(pllsai1cfgr, Stm32l4x5RccState),
+ VMSTATE_UINT32(pllsai2cfgr, Stm32l4x5RccState),
+ VMSTATE_UINT32(cier, Stm32l4x5RccState),
+ VMSTATE_UINT32(cifr, Stm32l4x5RccState),
+ VMSTATE_UINT32(ahb1rstr, Stm32l4x5RccState),
+ VMSTATE_UINT32(ahb2rstr, Stm32l4x5RccState),
+ VMSTATE_UINT32(ahb3rstr, Stm32l4x5RccState),
+ VMSTATE_UINT32(apb1rstr1, Stm32l4x5RccState),
+ VMSTATE_UINT32(apb1rstr2, Stm32l4x5RccState),
+ VMSTATE_UINT32(apb2rstr, Stm32l4x5RccState),
+ VMSTATE_UINT32(ahb1enr, Stm32l4x5RccState),
+ VMSTATE_UINT32(ahb2enr, Stm32l4x5RccState),
+ VMSTATE_UINT32(ahb3enr, Stm32l4x5RccState),
+ VMSTATE_UINT32(apb1enr1, Stm32l4x5RccState),
+ VMSTATE_UINT32(apb1enr2, Stm32l4x5RccState),
+ VMSTATE_UINT32(apb2enr, Stm32l4x5RccState),
+ VMSTATE_UINT32(ahb1smenr, Stm32l4x5RccState),
+ VMSTATE_UINT32(ahb2smenr, Stm32l4x5RccState),
+ VMSTATE_UINT32(ahb3smenr, Stm32l4x5RccState),
+ VMSTATE_UINT32(apb1smenr1, Stm32l4x5RccState),
+ VMSTATE_UINT32(apb1smenr2, Stm32l4x5RccState),
+ VMSTATE_UINT32(apb2smenr, Stm32l4x5RccState),
+ VMSTATE_UINT32(ccipr, Stm32l4x5RccState),
+ VMSTATE_UINT32(bdcr, Stm32l4x5RccState),
+ VMSTATE_UINT32(csr, Stm32l4x5RccState),
+ VMSTATE_CLOCK(hsi16_rc, Stm32l4x5RccState),
+ VMSTATE_CLOCK(msi_rc, Stm32l4x5RccState),
+ VMSTATE_CLOCK(hse, Stm32l4x5RccState),
+ VMSTATE_CLOCK(lsi_rc, Stm32l4x5RccState),
+ VMSTATE_CLOCK(lse_crystal, Stm32l4x5RccState),
+ VMSTATE_CLOCK(sai1_extclk, Stm32l4x5RccState),
+ VMSTATE_CLOCK(sai2_extclk, Stm32l4x5RccState),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+
+static void stm32l4x5_rcc_realize(DeviceState *dev, Error **errp)
+{
+ Stm32l4x5RccState *s = STM32L4X5_RCC(dev);
+
+ if (s->hse_frequency < 4000000ULL ||
+ s->hse_frequency > 48000000ULL) {
+ error_setg(errp,
+ "HSE frequency is outside of the allowed [4-48]Mhz range: %" PRIx64 "",
+ s->hse_frequency);
+ return;
+ }
+
+ clock_update_hz(s->msi_rc, MSI_DEFAULT_FRQ);
+ clock_update_hz(s->sai1_extclk, s->sai1_extclk_frequency);
+ clock_update_hz(s->sai2_extclk, s->sai2_extclk_frequency);
+ clock_update(s->gnd, 0);
+}
+
+static Property stm32l4x5_rcc_properties[] = {
+ DEFINE_PROP_UINT64("hse_frequency", Stm32l4x5RccState,
+ hse_frequency, HSE_DEFAULT_FRQ),
+ DEFINE_PROP_UINT64("sai1_extclk_frequency", Stm32l4x5RccState,
+ sai1_extclk_frequency, 0),
+ DEFINE_PROP_UINT64("sai2_extclk_frequency", Stm32l4x5RccState,
+ sai2_extclk_frequency, 0),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void stm32l4x5_rcc_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ ResettableClass *rc = RESETTABLE_CLASS(klass);
+
+
+ rc->phases.hold = stm32l4x5_rcc_reset_hold;
+ device_class_set_props(dc, stm32l4x5_rcc_properties);
+ dc->realize = stm32l4x5_rcc_realize;
+ dc->vmsd = &vmstate_stm32l4x5_rcc;
+}
+
+static const TypeInfo stm32l4x5_rcc_types[] = {
+ {
+ .name = TYPE_STM32L4X5_RCC,
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(Stm32l4x5RccState),
+ .instance_init = stm32l4x5_rcc_init,
+ .class_init = stm32l4x5_rcc_class_init,
+ }
+};
+
+DEFINE_TYPES(stm32l4x5_rcc_types)
diff --git a/hw/misc/trace-events b/hw/misc/trace-events
index 5f5bc92..38169cc 100644
--- a/hw/misc/trace-events
+++ b/hw/misc/trace-events
@@ -174,6 +174,10 @@
stm32l4x5_exti_read(uint64_t addr, uint64_t data) "reg read: addr: 0x%" PRIx64 " val: 0x%" PRIx64 ""
stm32l4x5_exti_write(uint64_t addr, uint64_t data) "reg write: addr: 0x%" PRIx64 " val: 0x%" PRIx64 ""
+# stm32l4x5_rcc.c
+stm32l4x5_rcc_read(uint64_t addr, uint32_t data) "RCC: Read <0x%" PRIx64 "> -> 0x%" PRIx32
+stm32l4x5_rcc_write(uint64_t addr, uint32_t data) "RCC: Write <0x%" PRIx64 "> <- 0x%" PRIx32
+
# tz-mpc.c
tz_mpc_reg_read(uint32_t offset, uint64_t data, unsigned size) "TZ MPC regs read: offset 0x%x data 0x%" PRIx64 " size %u"
tz_mpc_reg_write(uint32_t offset, uint64_t data, unsigned size) "TZ MPC regs write: offset 0x%x data 0x%" PRIx64 " size %u"
diff --git a/include/hw/arm/stm32l4x5_soc.h b/include/hw/arm/stm32l4x5_soc.h
index 4f314b7..0b4f97e 100644
--- a/include/hw/arm/stm32l4x5_soc.h
+++ b/include/hw/arm/stm32l4x5_soc.h
@@ -29,6 +29,7 @@
#include "hw/or-irq.h"
#include "hw/misc/stm32l4x5_syscfg.h"
#include "hw/misc/stm32l4x5_exti.h"
+#include "hw/misc/stm32l4x5_rcc.h"
#include "qom/object.h"
#define TYPE_STM32L4X5_SOC "stm32l4x5-soc"
@@ -47,6 +48,7 @@
Stm32l4x5ExtiState exti;
OrIRQState exti_or_gates[NUM_EXTI_OR_GATES];
Stm32l4x5SyscfgState syscfg;
+ Stm32l4x5RccState rcc;
MemoryRegion sram1;
MemoryRegion sram2;
diff --git a/include/hw/misc/stm32l4x5_rcc.h b/include/hw/misc/stm32l4x5_rcc.h
new file mode 100644
index 0000000..5157e96
--- /dev/null
+++ b/include/hw/misc/stm32l4x5_rcc.h
@@ -0,0 +1,80 @@
+/*
+ * STM32L4X5 RCC (Reset and clock control)
+ *
+ * Copyright (c) 2023 Arnaud Minier <arnaud.minier@telecom-paris.fr>
+ * Copyright (c) 2023 Inès Varhol <ines.varhol@telecom-paris.fr>
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ * The reference used is the STMicroElectronics RM0351 Reference manual
+ * for STM32L4x5 and STM32L4x6 advanced Arm ® -based 32-bit MCUs.
+ *
+ * Inspired by the BCM2835 CPRMAN clock manager by Luc Michel.
+ */
+
+#ifndef HW_STM32L4X5_RCC_H
+#define HW_STM32L4X5_RCC_H
+
+#include "hw/sysbus.h"
+#include "qom/object.h"
+
+#define TYPE_STM32L4X5_RCC "stm32l4x5-rcc"
+OBJECT_DECLARE_SIMPLE_TYPE(Stm32l4x5RccState, STM32L4X5_RCC)
+
+/* In the Stm32l4x5 clock tree, mux have at most 7 sources */
+#define RCC_NUM_CLOCK_MUX_SRC 7
+struct Stm32l4x5RccState {
+ SysBusDevice parent_obj;
+
+ MemoryRegion mmio;
+
+ uint32_t cr;
+ uint32_t icscr;
+ uint32_t cfgr;
+ uint32_t pllcfgr;
+ uint32_t pllsai1cfgr;
+ uint32_t pllsai2cfgr;
+ uint32_t cier;
+ uint32_t cifr;
+ uint32_t ahb1rstr;
+ uint32_t ahb2rstr;
+ uint32_t ahb3rstr;
+ uint32_t apb1rstr1;
+ uint32_t apb1rstr2;
+ uint32_t apb2rstr;
+ uint32_t ahb1enr;
+ uint32_t ahb2enr;
+ uint32_t ahb3enr;
+ uint32_t apb1enr1;
+ uint32_t apb1enr2;
+ uint32_t apb2enr;
+ uint32_t ahb1smenr;
+ uint32_t ahb2smenr;
+ uint32_t ahb3smenr;
+ uint32_t apb1smenr1;
+ uint32_t apb1smenr2;
+ uint32_t apb2smenr;
+ uint32_t ccipr;
+ uint32_t bdcr;
+ uint32_t csr;
+
+ /* Clock sources */
+ Clock *gnd;
+ Clock *hsi16_rc;
+ Clock *msi_rc;
+ Clock *hse;
+ Clock *lsi_rc;
+ Clock *lse_crystal;
+ Clock *sai1_extclk;
+ Clock *sai2_extclk;
+
+ qemu_irq irq;
+ uint64_t hse_frequency;
+ uint64_t sai1_extclk_frequency;
+ uint64_t sai2_extclk_frequency;
+};
+
+#endif /* HW_STM32L4X5_RCC_H */
diff --git a/include/hw/misc/stm32l4x5_rcc_internals.h b/include/hw/misc/stm32l4x5_rcc_internals.h
new file mode 100644
index 0000000..331ea30
--- /dev/null
+++ b/include/hw/misc/stm32l4x5_rcc_internals.h
@@ -0,0 +1,286 @@
+/*
+ * STM32L4X5 RCC (Reset and clock control)
+ *
+ * Copyright (c) 2023 Arnaud Minier <arnaud.minier@telecom-paris.fr>
+ * Copyright (c) 2023 Inès Varhol <ines.varhol@telecom-paris.fr>
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ * The reference used is the STMicroElectronics RM0351 Reference manual
+ * for STM32L4x5 and STM32L4x6 advanced Arm ® -based 32-bit MCUs.
+ *
+ * Inspired by the BCM2835 CPRMAN clock manager implementation by Luc Michel.
+ */
+
+#ifndef HW_STM32L4X5_RCC_INTERNALS_H
+#define HW_STM32L4X5_RCC_INTERNALS_H
+
+#include "hw/registerfields.h"
+#include "hw/misc/stm32l4x5_rcc.h"
+
+
+/* Register map */
+REG32(CR, 0x00)
+ FIELD(CR, PLLSAI2RDY, 29, 1)
+ FIELD(CR, PLLSAI2ON, 28, 1)
+ FIELD(CR, PLLSAI1RDY, 27, 1)
+ FIELD(CR, PLLSAI1ON, 26, 1)
+ FIELD(CR, PLLRDY, 25, 1)
+ FIELD(CR, PLLON, 24, 1)
+ FIELD(CR, CSSON, 19, 1)
+ FIELD(CR, HSEBYP, 18, 1)
+ FIELD(CR, HSERDY, 17, 1)
+ FIELD(CR, HSEON, 16, 1)
+ FIELD(CR, HSIASFS, 11, 1)
+ FIELD(CR, HSIRDY, 10, 1)
+ FIELD(CR, HSIKERON, 9, 1)
+ FIELD(CR, HSION, 8, 1)
+ FIELD(CR, MSIRANGE, 4, 4)
+ FIELD(CR, MSIRGSEL, 3, 1)
+ FIELD(CR, MSIPLLEN, 2, 1)
+ FIELD(CR, MSIRDY, 1, 1)
+ FIELD(CR, MSION, 0, 1)
+REG32(ICSCR, 0x04)
+ FIELD(ICSCR, HSITRIM, 24, 7)
+ FIELD(ICSCR, HSICAL, 16, 8)
+ FIELD(ICSCR, MSITRIM, 8, 8)
+ FIELD(ICSCR, MSICAL, 0, 8)
+REG32(CFGR, 0x08)
+ FIELD(CFGR, MCOPRE, 28, 3)
+ /* MCOSEL[2:0] only for STM32L475xx/476xx/486xx devices */
+ FIELD(CFGR, MCOSEL, 24, 3)
+ FIELD(CFGR, STOPWUCK, 15, 1)
+ FIELD(CFGR, PPRE2, 11, 3)
+ FIELD(CFGR, PPRE1, 8, 3)
+ FIELD(CFGR, HPRE, 4, 4)
+ FIELD(CFGR, SWS, 2, 2)
+ FIELD(CFGR, SW, 0, 2)
+REG32(PLLCFGR, 0x0C)
+ FIELD(PLLCFGR, PLLPDIV, 27, 5)
+ FIELD(PLLCFGR, PLLR, 25, 2)
+ FIELD(PLLCFGR, PLLREN, 24, 1)
+ FIELD(PLLCFGR, PLLQ, 21, 2)
+ FIELD(PLLCFGR, PLLQEN, 20, 1)
+ FIELD(PLLCFGR, PLLP, 17, 1)
+ FIELD(PLLCFGR, PLLPEN, 16, 1)
+ FIELD(PLLCFGR, PLLN, 8, 7)
+ FIELD(PLLCFGR, PLLM, 4, 3)
+ FIELD(PLLCFGR, PLLSRC, 0, 2)
+REG32(PLLSAI1CFGR, 0x10)
+ FIELD(PLLSAI1CFGR, PLLSAI1PDIV, 27, 5)
+ FIELD(PLLSAI1CFGR, PLLSAI1R, 25, 2)
+ FIELD(PLLSAI1CFGR, PLLSAI1REN, 24, 1)
+ FIELD(PLLSAI1CFGR, PLLSAI1Q, 21, 2)
+ FIELD(PLLSAI1CFGR, PLLSAI1QEN, 20, 1)
+ FIELD(PLLSAI1CFGR, PLLSAI1P, 17, 1)
+ FIELD(PLLSAI1CFGR, PLLSAI1PEN, 16, 1)
+ FIELD(PLLSAI1CFGR, PLLSAI1N, 8, 7)
+REG32(PLLSAI2CFGR, 0x14)
+ FIELD(PLLSAI2CFGR, PLLSAI2PDIV, 27, 5)
+ FIELD(PLLSAI2CFGR, PLLSAI2R, 25, 2)
+ FIELD(PLLSAI2CFGR, PLLSAI2REN, 24, 1)
+ FIELD(PLLSAI2CFGR, PLLSAI2Q, 21, 2)
+ FIELD(PLLSAI2CFGR, PLLSAI2QEN, 20, 1)
+ FIELD(PLLSAI2CFGR, PLLSAI2P, 17, 1)
+ FIELD(PLLSAI2CFGR, PLLSAI2PEN, 16, 1)
+ FIELD(PLLSAI2CFGR, PLLSAI2N, 8, 7)
+REG32(CIER, 0x18)
+ /* HSI48RDYIE: only on STM32L496xx/4A6xx devices */
+ FIELD(CIER, LSECSSIE, 9, 1)
+ FIELD(CIER, PLLSAI2RDYIE, 7, 1)
+ FIELD(CIER, PLLSAI1RDYIE, 6, 1)
+ FIELD(CIER, PLLRDYIE, 5, 1)
+ FIELD(CIER, HSERDYIE, 4, 1)
+ FIELD(CIER, HSIRDYIE, 3, 1)
+ FIELD(CIER, MSIRDYIE, 2, 1)
+ FIELD(CIER, LSERDYIE, 1, 1)
+ FIELD(CIER, LSIRDYIE, 0, 1)
+REG32(CIFR, 0x1C)
+ /* HSI48RDYF: only on STM32L496xx/4A6xx devices */
+ FIELD(CIFR, LSECSSF, 9, 1)
+ FIELD(CIFR, CSSF, 8, 1)
+ FIELD(CIFR, PLLSAI2RDYF, 7, 1)
+ FIELD(CIFR, PLLSAI1RDYF, 6, 1)
+ FIELD(CIFR, PLLRDYF, 5, 1)
+ FIELD(CIFR, HSERDYF, 4, 1)
+ FIELD(CIFR, HSIRDYF, 3, 1)
+ FIELD(CIFR, MSIRDYF, 2, 1)
+ FIELD(CIFR, LSERDYF, 1, 1)
+ FIELD(CIFR, LSIRDYF, 0, 1)
+REG32(CICR, 0x20)
+ /* HSI48RDYC: only on STM32L496xx/4A6xx devices */
+ FIELD(CICR, LSECSSC, 9, 1)
+ FIELD(CICR, CSSC, 8, 1)
+ FIELD(CICR, PLLSAI2RDYC, 7, 1)
+ FIELD(CICR, PLLSAI1RDYC, 6, 1)
+ FIELD(CICR, PLLRDYC, 5, 1)
+ FIELD(CICR, HSERDYC, 4, 1)
+ FIELD(CICR, HSIRDYC, 3, 1)
+ FIELD(CICR, MSIRDYC, 2, 1)
+ FIELD(CICR, LSERDYC, 1, 1)
+ FIELD(CICR, LSIRDYC, 0, 1)
+REG32(AHB1RSTR, 0x28)
+REG32(AHB2RSTR, 0x2C)
+REG32(AHB3RSTR, 0x30)
+REG32(APB1RSTR1, 0x38)
+REG32(APB1RSTR2, 0x3C)
+REG32(APB2RSTR, 0x40)
+REG32(AHB1ENR, 0x48)
+ /* DMA2DEN: reserved for STM32L475xx */
+ FIELD(AHB1ENR, TSCEN, 16, 1)
+ FIELD(AHB1ENR, CRCEN, 12, 1)
+ FIELD(AHB1ENR, FLASHEN, 8, 1)
+ FIELD(AHB1ENR, DMA2EN, 1, 1)
+ FIELD(AHB1ENR, DMA1EN, 0, 1)
+REG32(AHB2ENR, 0x4C)
+ FIELD(AHB2ENR, RNGEN, 18, 1)
+ /* HASHEN: reserved for STM32L475xx */
+ FIELD(AHB2ENR, AESEN, 16, 1)
+ /* DCMIEN: reserved for STM32L475xx */
+ FIELD(AHB2ENR, ADCEN, 13, 1)
+ FIELD(AHB2ENR, OTGFSEN, 12, 1)
+ /* GPIOIEN: reserved for STM32L475xx */
+ FIELD(AHB2ENR, GPIOHEN, 7, 1)
+ FIELD(AHB2ENR, GPIOGEN, 6, 1)
+ FIELD(AHB2ENR, GPIOFEN, 5, 1)
+ FIELD(AHB2ENR, GPIOEEN, 4, 1)
+ FIELD(AHB2ENR, GPIODEN, 3, 1)
+ FIELD(AHB2ENR, GPIOCEN, 2, 1)
+ FIELD(AHB2ENR, GPIOBEN, 1, 1)
+ FIELD(AHB2ENR, GPIOAEN, 0, 1)
+REG32(AHB3ENR, 0x50)
+ FIELD(AHB3ENR, QSPIEN, 8, 1)
+ FIELD(AHB3ENR, FMCEN, 0, 1)
+REG32(APB1ENR1, 0x58)
+ FIELD(APB1ENR1, LPTIM1EN, 31, 1)
+ FIELD(APB1ENR1, OPAMPEN, 30, 1)
+ FIELD(APB1ENR1, DAC1EN, 29, 1)
+ FIELD(APB1ENR1, PWREN, 28, 1)
+ FIELD(APB1ENR1, CAN2EN, 26, 1)
+ FIELD(APB1ENR1, CAN1EN, 25, 1)
+ /* CRSEN: reserved for STM32L475xx */
+ FIELD(APB1ENR1, I2C3EN, 23, 1)
+ FIELD(APB1ENR1, I2C2EN, 22, 1)
+ FIELD(APB1ENR1, I2C1EN, 21, 1)
+ FIELD(APB1ENR1, UART5EN, 20, 1)
+ FIELD(APB1ENR1, UART4EN, 19, 1)
+ FIELD(APB1ENR1, USART3EN, 18, 1)
+ FIELD(APB1ENR1, USART2EN, 17, 1)
+ FIELD(APB1ENR1, SPI3EN, 15, 1)
+ FIELD(APB1ENR1, SPI2EN, 14, 1)
+ FIELD(APB1ENR1, WWDGEN, 11, 1)
+ /* RTCAPBEN: reserved for STM32L475xx */
+ FIELD(APB1ENR1, LCDEN, 9, 1)
+ FIELD(APB1ENR1, TIM7EN, 5, 1)
+ FIELD(APB1ENR1, TIM6EN, 4, 1)
+ FIELD(APB1ENR1, TIM5EN, 3, 1)
+ FIELD(APB1ENR1, TIM4EN, 2, 1)
+ FIELD(APB1ENR1, TIM3EN, 1, 1)
+ FIELD(APB1ENR1, TIM2EN, 0, 1)
+REG32(APB1ENR2, 0x5C)
+ FIELD(APB1ENR2, LPTIM2EN, 5, 1)
+ FIELD(APB1ENR2, SWPMI1EN, 2, 1)
+ /* I2C4EN: reserved for STM32L475xx */
+ FIELD(APB1ENR2, LPUART1EN, 0, 1)
+REG32(APB2ENR, 0x60)
+ FIELD(APB2ENR, DFSDM1EN, 24, 1)
+ FIELD(APB2ENR, SAI2EN, 22, 1)
+ FIELD(APB2ENR, SAI1EN, 21, 1)
+ FIELD(APB2ENR, TIM17EN, 18, 1)
+ FIELD(APB2ENR, TIM16EN, 17, 1)
+ FIELD(APB2ENR, TIM15EN, 16, 1)
+ FIELD(APB2ENR, USART1EN, 14, 1)
+ FIELD(APB2ENR, TIM8EN, 13, 1)
+ FIELD(APB2ENR, SPI1EN, 12, 1)
+ FIELD(APB2ENR, TIM1EN, 11, 1)
+ FIELD(APB2ENR, SDMMC1EN, 10, 1)
+ FIELD(APB2ENR, FWEN, 7, 1)
+ FIELD(APB2ENR, SYSCFGEN, 0, 1)
+REG32(AHB1SMENR, 0x68)
+REG32(AHB2SMENR, 0x6C)
+REG32(AHB3SMENR, 0x70)
+REG32(APB1SMENR1, 0x78)
+REG32(APB1SMENR2, 0x7C)
+REG32(APB2SMENR, 0x80)
+REG32(CCIPR, 0x88)
+ FIELD(CCIPR, DFSDM1SEL, 31, 1)
+ FIELD(CCIPR, SWPMI1SEL, 30, 1)
+ FIELD(CCIPR, ADCSEL, 28, 2)
+ FIELD(CCIPR, CLK48SEL, 26, 2)
+ FIELD(CCIPR, SAI2SEL, 24, 2)
+ FIELD(CCIPR, SAI1SEL, 22, 2)
+ FIELD(CCIPR, LPTIM2SEL, 20, 2)
+ FIELD(CCIPR, LPTIM1SEL, 18, 2)
+ FIELD(CCIPR, I2C3SEL, 16, 2)
+ FIELD(CCIPR, I2C2SEL, 14, 2)
+ FIELD(CCIPR, I2C1SEL, 12, 2)
+ FIELD(CCIPR, LPUART1SEL, 10, 2)
+ FIELD(CCIPR, UART5SEL, 8, 2)
+ FIELD(CCIPR, UART4SEL, 6, 2)
+ FIELD(CCIPR, USART3SEL, 4, 2)
+ FIELD(CCIPR, USART2SEL, 2, 2)
+ FIELD(CCIPR, USART1SEL, 0, 2)
+REG32(BDCR, 0x90)
+ FIELD(BDCR, LSCOSEL, 25, 1)
+ FIELD(BDCR, LSCOEN, 24, 1)
+ FIELD(BDCR, BDRST, 16, 1)
+ FIELD(BDCR, RTCEN, 15, 1)
+ FIELD(BDCR, RTCSEL, 8, 2)
+ FIELD(BDCR, LSECSSD, 6, 1)
+ FIELD(BDCR, LSECSSON, 5, 1)
+ FIELD(BDCR, LSEDRV, 3, 2)
+ FIELD(BDCR, LSEBYP, 2, 1)
+ FIELD(BDCR, LSERDY, 1, 1)
+ FIELD(BDCR, LSEON, 0, 1)
+REG32(CSR, 0x94)
+ FIELD(CSR, LPWRRSTF, 31, 1)
+ FIELD(CSR, WWDGRSTF, 30, 1)
+ FIELD(CSR, IWWGRSTF, 29, 1)
+ FIELD(CSR, SFTRSTF, 28, 1)
+ FIELD(CSR, BORRSTF, 27, 1)
+ FIELD(CSR, PINRSTF, 26, 1)
+ FIELD(CSR, OBLRSTF, 25, 1)
+ FIELD(CSR, FWRSTF, 24, 1)
+ FIELD(CSR, RMVF, 23, 1)
+ FIELD(CSR, MSISRANGE, 8, 4)
+ FIELD(CSR, LSIRDY, 1, 1)
+ FIELD(CSR, LSION, 0, 1)
+/* CRRCR and CCIPR2 registers are present on L496/L4A6 devices only. */
+
+/* Read Only masks to prevent writes in unauthorized bits */
+#define CR_READ_ONLY_MASK (R_CR_PLLSAI2RDY_MASK | \
+ R_CR_PLLSAI1RDY_MASK | \
+ R_CR_PLLRDY_MASK | \
+ R_CR_HSERDY_MASK | \
+ R_CR_HSIRDY_MASK | \
+ R_CR_MSIRDY_MASK)
+#define CR_READ_SET_MASK (R_CR_CSSON_MASK | R_CR_MSIRGSEL_MASK)
+#define ICSCR_READ_ONLY_MASK (R_ICSCR_HSICAL_MASK | R_ICSCR_MSICAL_MASK)
+#define CFGR_READ_ONLY_MASK (R_CFGR_SWS_MASK)
+#define CIFR_READ_ONLY_MASK (R_CIFR_LSECSSF_MASK | \
+ R_CIFR_CSSF_MASK | \
+ R_CIFR_PLLSAI2RDYF_MASK | \
+ R_CIFR_PLLSAI1RDYF_MASK | \
+ R_CIFR_PLLRDYF_MASK | \
+ R_CIFR_HSERDYF_MASK | \
+ R_CIFR_HSIRDYF_MASK | \
+ R_CIFR_MSIRDYF_MASK | \
+ R_CIFR_LSERDYF_MASK | \
+ R_CIFR_LSIRDYF_MASK)
+#define CIFR_IRQ_MASK CIFR_READ_ONLY_MASK
+#define APB2ENR_READ_SET_MASK (R_APB2ENR_FWEN_MASK)
+#define BDCR_READ_ONLY_MASK (R_BDCR_LSECSSD_MASK | R_BDCR_LSERDY_MASK)
+#define CSR_READ_ONLY_MASK (R_CSR_LPWRRSTF_MASK | \
+ R_CSR_WWDGRSTF_MASK | \
+ R_CSR_IWWGRSTF_MASK | \
+ R_CSR_SFTRSTF_MASK | \
+ R_CSR_BORRSTF_MASK | \
+ R_CSR_PINRSTF_MASK | \
+ R_CSR_OBLRSTF_MASK | \
+ R_CSR_FWRSTF_MASK | \
+ R_CSR_LSIRDY_MASK)
+
+#endif /* HW_STM32L4X5_RCC_INTERNALS_H */
