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qemu/hw/arm/stm32f100_soc.c

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stm32f100: Add the stm32f100 SoC This SoC is similar to stm32f205 SoC. This will be used by the STM32VLDISCOVERY to create a machine. Signed-off-by: Alexandre Iooss <erdnaxe@crans.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-id: 20210617165647.2575955-2-erdnaxe@crans.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-06-17 19:56:44 +03:00
/*
* STM32F100 SoC
*
* Copyright (c) 2021 Alexandre Iooss <erdnaxe@crans.org>
* 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 "qemu/osdep.h"
#include "qapi/error.h"
#include "qemu/module.h"
#include "hw/arm/boot.h"
#include "exec/address-spaces.h"
#include "hw/arm/stm32f100_soc.h"
#include "hw/qdev-properties.h"
hw/arm/stm32f100: Wire up sysclk and refclk Wire up the sysclk and refclk for the stm32f100 SoC. This SoC always runs the systick refclk at 1/8 the frequency of the main CPU clock, so the board code only needs to provide a single sysclk clock. Because there is only one board using this SoC, we convert the SoC and the board together, rather than splitting it into "add clock to SoC; connect clock in board; add error check in SoC code that clock is wired up". When the systick device starts honouring its clock inputs, this will fix an emulation inaccuracy in the stm32vldiscovery board where the systick reference clock was running at 1MHz rather than 3MHz. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Alexandre Iooss <erdnaxe@crans.org> Reviewed-by: Luc Michel <luc@lmichel.fr> Message-id: 20210812093356.1946-12-peter.maydell@linaro.org
2021-08-12 12:33:42 +03:00
#include "hw/qdev-clock.h"
stm32f100: Add the stm32f100 SoC This SoC is similar to stm32f205 SoC. This will be used by the STM32VLDISCOVERY to create a machine. Signed-off-by: Alexandre Iooss <erdnaxe@crans.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-id: 20210617165647.2575955-2-erdnaxe@crans.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-06-17 19:56:44 +03:00
#include "hw/misc/unimp.h"
#include "sysemu/sysemu.h"
/* stm32f100_soc implementation is derived from stm32f205_soc */
static const uint32_t usart_addr[STM_NUM_USARTS] = { 0x40013800, 0x40004400,
0x40004800 };
static const uint32_t spi_addr[STM_NUM_SPIS] = { 0x40013000, 0x40003800 };
static const int usart_irq[STM_NUM_USARTS] = {37, 38, 39};
static const int spi_irq[STM_NUM_SPIS] = {35, 36};
static void stm32f100_soc_initfn(Object *obj)
{
STM32F100State *s = STM32F100_SOC(obj);
int i;
object_initialize_child(obj, "armv7m", &s->armv7m, TYPE_ARMV7M);
for (i = 0; i < STM_NUM_USARTS; i++) {
object_initialize_child(obj, "usart[*]", &s->usart[i],
TYPE_STM32F2XX_USART);
}
for (i = 0; i < STM_NUM_SPIS; i++) {
object_initialize_child(obj, "spi[*]", &s->spi[i], TYPE_STM32F2XX_SPI);
}
hw/arm/stm32f100: Wire up sysclk and refclk Wire up the sysclk and refclk for the stm32f100 SoC. This SoC always runs the systick refclk at 1/8 the frequency of the main CPU clock, so the board code only needs to provide a single sysclk clock. Because there is only one board using this SoC, we convert the SoC and the board together, rather than splitting it into "add clock to SoC; connect clock in board; add error check in SoC code that clock is wired up". When the systick device starts honouring its clock inputs, this will fix an emulation inaccuracy in the stm32vldiscovery board where the systick reference clock was running at 1MHz rather than 3MHz. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Alexandre Iooss <erdnaxe@crans.org> Reviewed-by: Luc Michel <luc@lmichel.fr> Message-id: 20210812093356.1946-12-peter.maydell@linaro.org
2021-08-12 12:33:42 +03:00
s->sysclk = qdev_init_clock_in(DEVICE(s), "sysclk", NULL, NULL, 0);
s->refclk = qdev_init_clock_in(DEVICE(s), "refclk", NULL, NULL, 0);
stm32f100: Add the stm32f100 SoC This SoC is similar to stm32f205 SoC. This will be used by the STM32VLDISCOVERY to create a machine. Signed-off-by: Alexandre Iooss <erdnaxe@crans.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-id: 20210617165647.2575955-2-erdnaxe@crans.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-06-17 19:56:44 +03:00
}
static void stm32f100_soc_realize(DeviceState *dev_soc, Error **errp)
{
STM32F100State *s = STM32F100_SOC(dev_soc);
DeviceState *dev, *armv7m;
SysBusDevice *busdev;
int i;
MemoryRegion *system_memory = get_system_memory();
hw/arm/stm32f100: Wire up sysclk and refclk Wire up the sysclk and refclk for the stm32f100 SoC. This SoC always runs the systick refclk at 1/8 the frequency of the main CPU clock, so the board code only needs to provide a single sysclk clock. Because there is only one board using this SoC, we convert the SoC and the board together, rather than splitting it into "add clock to SoC; connect clock in board; add error check in SoC code that clock is wired up". When the systick device starts honouring its clock inputs, this will fix an emulation inaccuracy in the stm32vldiscovery board where the systick reference clock was running at 1MHz rather than 3MHz. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Alexandre Iooss <erdnaxe@crans.org> Reviewed-by: Luc Michel <luc@lmichel.fr> Message-id: 20210812093356.1946-12-peter.maydell@linaro.org
2021-08-12 12:33:42 +03:00
/*
* We use s->refclk internally and only define it with qdev_init_clock_in()
* so it is correctly parented and not leaked on an init/deinit; it is not
* intended as an externally exposed clock.
*/
if (clock_has_source(s->refclk)) {
error_setg(errp, "refclk clock must not be wired up by the board code");
return;
}
if (!clock_has_source(s->sysclk)) {
error_setg(errp, "sysclk clock must be wired up by the board code");
return;
}
/*
* TODO: ideally we should model the SoC RCC and its ability to
* change the sysclk frequency and define different sysclk sources.
*/
/* The refclk always runs at frequency HCLK / 8 */
clock_set_mul_div(s->refclk, 8, 1);
clock_set_source(s->refclk, s->sysclk);
stm32f100: Add the stm32f100 SoC This SoC is similar to stm32f205 SoC. This will be used by the STM32VLDISCOVERY to create a machine. Signed-off-by: Alexandre Iooss <erdnaxe@crans.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-id: 20210617165647.2575955-2-erdnaxe@crans.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-06-17 19:56:44 +03:00
/*
* Init flash region
* Flash starts at 0x08000000 and then is aliased to boot memory at 0x0
*/
hw/arm: Don't allocate separate MemoryRegions in stm32 SoC realize In the realize methods of the stm32f100 and stm32f205 SoC objects, we call g_new() to create new MemoryRegion objects for the sram, flash, and flash_alias. This is unnecessary (and leaves open the possibility of leaking the allocations if we exit from realize with an error). Make these MemoryRegions member fields of the device state struct instead, as stm32f405 already does. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alexandre Iooss <erdnaxe@crans.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Luc Michel <luc@lmichel.fr> Message-id: 20210812093356.1946-11-peter.maydell@linaro.org
2021-08-12 12:33:41 +03:00
memory_region_init_rom(&s->flash, OBJECT(dev_soc), "STM32F100.flash",
stm32f100: Add the stm32f100 SoC This SoC is similar to stm32f205 SoC. This will be used by the STM32VLDISCOVERY to create a machine. Signed-off-by: Alexandre Iooss <erdnaxe@crans.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-id: 20210617165647.2575955-2-erdnaxe@crans.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-06-17 19:56:44 +03:00
FLASH_SIZE, &error_fatal);
hw/arm: Don't allocate separate MemoryRegions in stm32 SoC realize In the realize methods of the stm32f100 and stm32f205 SoC objects, we call g_new() to create new MemoryRegion objects for the sram, flash, and flash_alias. This is unnecessary (and leaves open the possibility of leaking the allocations if we exit from realize with an error). Make these MemoryRegions member fields of the device state struct instead, as stm32f405 already does. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alexandre Iooss <erdnaxe@crans.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Luc Michel <luc@lmichel.fr> Message-id: 20210812093356.1946-11-peter.maydell@linaro.org
2021-08-12 12:33:41 +03:00
memory_region_init_alias(&s->flash_alias, OBJECT(dev_soc),
"STM32F100.flash.alias", &s->flash, 0, FLASH_SIZE);
memory_region_add_subregion(system_memory, FLASH_BASE_ADDRESS, &s->flash);
memory_region_add_subregion(system_memory, 0, &s->flash_alias);
stm32f100: Add the stm32f100 SoC This SoC is similar to stm32f205 SoC. This will be used by the STM32VLDISCOVERY to create a machine. Signed-off-by: Alexandre Iooss <erdnaxe@crans.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-id: 20210617165647.2575955-2-erdnaxe@crans.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-06-17 19:56:44 +03:00
/* Init SRAM region */
hw/arm: Don't allocate separate MemoryRegions in stm32 SoC realize In the realize methods of the stm32f100 and stm32f205 SoC objects, we call g_new() to create new MemoryRegion objects for the sram, flash, and flash_alias. This is unnecessary (and leaves open the possibility of leaking the allocations if we exit from realize with an error). Make these MemoryRegions member fields of the device state struct instead, as stm32f405 already does. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alexandre Iooss <erdnaxe@crans.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Luc Michel <luc@lmichel.fr> Message-id: 20210812093356.1946-11-peter.maydell@linaro.org
2021-08-12 12:33:41 +03:00
memory_region_init_ram(&s->sram, NULL, "STM32F100.sram", SRAM_SIZE,
stm32f100: Add the stm32f100 SoC This SoC is similar to stm32f205 SoC. This will be used by the STM32VLDISCOVERY to create a machine. Signed-off-by: Alexandre Iooss <erdnaxe@crans.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-id: 20210617165647.2575955-2-erdnaxe@crans.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-06-17 19:56:44 +03:00
&error_fatal);
hw/arm: Don't allocate separate MemoryRegions in stm32 SoC realize In the realize methods of the stm32f100 and stm32f205 SoC objects, we call g_new() to create new MemoryRegion objects for the sram, flash, and flash_alias. This is unnecessary (and leaves open the possibility of leaking the allocations if we exit from realize with an error). Make these MemoryRegions member fields of the device state struct instead, as stm32f405 already does. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alexandre Iooss <erdnaxe@crans.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Luc Michel <luc@lmichel.fr> Message-id: 20210812093356.1946-11-peter.maydell@linaro.org
2021-08-12 12:33:41 +03:00
memory_region_add_subregion(system_memory, SRAM_BASE_ADDRESS, &s->sram);
stm32f100: Add the stm32f100 SoC This SoC is similar to stm32f205 SoC. This will be used by the STM32VLDISCOVERY to create a machine. Signed-off-by: Alexandre Iooss <erdnaxe@crans.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-id: 20210617165647.2575955-2-erdnaxe@crans.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-06-17 19:56:44 +03:00
/* Init ARMv7m */
armv7m = DEVICE(&s->armv7m);
qdev_prop_set_uint32(armv7m, "num-irq", 61);
hw/arm/stm32f100: Report error when incorrect CPU is used The 'stm32vldiscovery' machine ignores the CPU type requested by the command line. This might confuse users, since the following will create a machine with a Cortex-M3 CPU: $ qemu-system-aarch64 -M stm32vldiscovery -cpu neoverse-n1 Set the MachineClass::valid_cpu_types field (introduced in commit c9cf636d48 "machine: Add a valid_cpu_types property"). Remove the now unused MachineClass::default_cpu_type field. We now get: $ qemu-system-aarch64 -M stm32vldiscovery -cpu neoverse-n1 qemu-system-aarch64: Invalid CPU type: neoverse-n1-arm-cpu The valid types are: cortex-m3-arm-cpu Since the SoC family can only use Cortex-M3 CPUs, hard-code the CPU type name at the SoC level, removing the QOM property entirely. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Gavin Shan <gshan@redhat.com> Message-id: 20231117071704.35040-5-philmd@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-11-17 10:17:04 +03:00
qdev_prop_set_string(armv7m, "cpu-type", ARM_CPU_TYPE_NAME("cortex-m3"));
stm32f100: Add the stm32f100 SoC This SoC is similar to stm32f205 SoC. This will be used by the STM32VLDISCOVERY to create a machine. Signed-off-by: Alexandre Iooss <erdnaxe@crans.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-id: 20210617165647.2575955-2-erdnaxe@crans.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-06-17 19:56:44 +03:00
qdev_prop_set_bit(armv7m, "enable-bitband", true);
hw/arm/stm32f100: Wire up sysclk and refclk Wire up the sysclk and refclk for the stm32f100 SoC. This SoC always runs the systick refclk at 1/8 the frequency of the main CPU clock, so the board code only needs to provide a single sysclk clock. Because there is only one board using this SoC, we convert the SoC and the board together, rather than splitting it into "add clock to SoC; connect clock in board; add error check in SoC code that clock is wired up". When the systick device starts honouring its clock inputs, this will fix an emulation inaccuracy in the stm32vldiscovery board where the systick reference clock was running at 1MHz rather than 3MHz. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Alexandre Iooss <erdnaxe@crans.org> Reviewed-by: Luc Michel <luc@lmichel.fr> Message-id: 20210812093356.1946-12-peter.maydell@linaro.org
2021-08-12 12:33:42 +03:00
qdev_connect_clock_in(armv7m, "cpuclk", s->sysclk);
qdev_connect_clock_in(armv7m, "refclk", s->refclk);
stm32f100: Add the stm32f100 SoC This SoC is similar to stm32f205 SoC. This will be used by the STM32VLDISCOVERY to create a machine. Signed-off-by: Alexandre Iooss <erdnaxe@crans.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-id: 20210617165647.2575955-2-erdnaxe@crans.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-06-17 19:56:44 +03:00
object_property_set_link(OBJECT(&s->armv7m), "memory",
OBJECT(get_system_memory()), &error_abort);
if (!sysbus_realize(SYS_BUS_DEVICE(&s->armv7m), errp)) {
return;
}
/* Attach UART (uses USART registers) and USART controllers */
for (i = 0; i < STM_NUM_USARTS; i++) {
dev = DEVICE(&(s->usart[i]));
qdev_prop_set_chr(dev, "chardev", serial_hd(i));
if (!sysbus_realize(SYS_BUS_DEVICE(&s->usart[i]), errp)) {
return;
}
busdev = SYS_BUS_DEVICE(dev);
sysbus_mmio_map(busdev, 0, usart_addr[i]);
sysbus_connect_irq(busdev, 0, qdev_get_gpio_in(armv7m, usart_irq[i]));
}
/* SPI 1 and 2 */
for (i = 0; i < STM_NUM_SPIS; i++) {
dev = DEVICE(&(s->spi[i]));
if (!sysbus_realize(SYS_BUS_DEVICE(&s->spi[i]), errp)) {
return;
}
busdev = SYS_BUS_DEVICE(dev);
sysbus_mmio_map(busdev, 0, spi_addr[i]);
sysbus_connect_irq(busdev, 0, qdev_get_gpio_in(armv7m, spi_irq[i]));
}
create_unimplemented_device("timer[2]", 0x40000000, 0x400);
create_unimplemented_device("timer[3]", 0x40000400, 0x400);
create_unimplemented_device("timer[4]", 0x40000800, 0x400);
create_unimplemented_device("timer[6]", 0x40001000, 0x400);
create_unimplemented_device("timer[7]", 0x40001400, 0x400);
create_unimplemented_device("RTC", 0x40002800, 0x400);
create_unimplemented_device("WWDG", 0x40002C00, 0x400);
create_unimplemented_device("IWDG", 0x40003000, 0x400);
create_unimplemented_device("I2C1", 0x40005400, 0x400);
create_unimplemented_device("I2C2", 0x40005800, 0x400);
create_unimplemented_device("BKP", 0x40006C00, 0x400);
create_unimplemented_device("PWR", 0x40007000, 0x400);
create_unimplemented_device("DAC", 0x40007400, 0x400);
create_unimplemented_device("CEC", 0x40007800, 0x400);
create_unimplemented_device("AFIO", 0x40010000, 0x400);
create_unimplemented_device("EXTI", 0x40010400, 0x400);
create_unimplemented_device("GPIOA", 0x40010800, 0x400);
create_unimplemented_device("GPIOB", 0x40010C00, 0x400);
create_unimplemented_device("GPIOC", 0x40011000, 0x400);
create_unimplemented_device("GPIOD", 0x40011400, 0x400);
create_unimplemented_device("GPIOE", 0x40011800, 0x400);
create_unimplemented_device("ADC1", 0x40012400, 0x400);
create_unimplemented_device("timer[1]", 0x40012C00, 0x400);
create_unimplemented_device("timer[15]", 0x40014000, 0x400);
create_unimplemented_device("timer[16]", 0x40014400, 0x400);
create_unimplemented_device("timer[17]", 0x40014800, 0x400);
create_unimplemented_device("DMA", 0x40020000, 0x400);
create_unimplemented_device("RCC", 0x40021000, 0x400);
create_unimplemented_device("Flash Int", 0x40022000, 0x400);
create_unimplemented_device("CRC", 0x40023000, 0x400);
}
static void stm32f100_soc_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->realize = stm32f100_soc_realize;
hw/arm/stm32f100: Report error when incorrect CPU is used The 'stm32vldiscovery' machine ignores the CPU type requested by the command line. This might confuse users, since the following will create a machine with a Cortex-M3 CPU: $ qemu-system-aarch64 -M stm32vldiscovery -cpu neoverse-n1 Set the MachineClass::valid_cpu_types field (introduced in commit c9cf636d48 "machine: Add a valid_cpu_types property"). Remove the now unused MachineClass::default_cpu_type field. We now get: $ qemu-system-aarch64 -M stm32vldiscovery -cpu neoverse-n1 qemu-system-aarch64: Invalid CPU type: neoverse-n1-arm-cpu The valid types are: cortex-m3-arm-cpu Since the SoC family can only use Cortex-M3 CPUs, hard-code the CPU type name at the SoC level, removing the QOM property entirely. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Gavin Shan <gshan@redhat.com> Message-id: 20231117071704.35040-5-philmd@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2023-11-17 10:17:04 +03:00
/* No vmstate or reset required: device has no internal state */
stm32f100: Add the stm32f100 SoC This SoC is similar to stm32f205 SoC. This will be used by the STM32VLDISCOVERY to create a machine. Signed-off-by: Alexandre Iooss <erdnaxe@crans.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-id: 20210617165647.2575955-2-erdnaxe@crans.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-06-17 19:56:44 +03:00
}
static const TypeInfo stm32f100_soc_info = {
.name = TYPE_STM32F100_SOC,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(STM32F100State),
.instance_init = stm32f100_soc_initfn,
.class_init = stm32f100_soc_class_init,
};
static void stm32f100_soc_types(void)
{
type_register_static(&stm32f100_soc_info);
}
type_init(stm32f100_soc_types)
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