Re: [PATCH v2 2/2] hw/arm: Add Olimex H405

[Alistair Francis]

On Sat, Dec 31, 2022 at 1:01 AM Felipe Balbi <balbi@kernel.org> wrote:
>
> Olimex makes a series of low-cost STM32 boards. This commit introduces
> the minimum setup to support SMT32-H405. See [1] for details
>
> [1] https://www.olimex.com/Products/ARM/ST/STM32-H405/
>
> Signed-off-by: Felipe Balbi <balbi@kernel.org>

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>

Alistair

> ---
>
> Changes since v1:
>         - Add a note in stm32.rst
>         - Initialize default_cpu_type to cortex-m4
>         - 0-initialize default_ram_size
>
>  MAINTAINERS                             |  6 +++
>  configs/devices/arm-softmmu/default.mak |  1 +
>  docs/system/arm/stm32.rst               |  1 +
>  hw/arm/Kconfig                          |  4 ++
>  hw/arm/meson.build                      |  1 +
>  hw/arm/olimex-stm32-h405.c              | 69 +++++++++++++++++++++++++
>  6 files changed, 82 insertions(+)
>  create mode 100644 hw/arm/olimex-stm32-h405.c
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 3bd433b65a55..e37846df0071 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -1026,6 +1026,12 @@ L: qemu-arm@nongnu.org
>  S: Maintained
>  F: hw/arm/netduinoplus2.c
>
> +Olimex STM32 H405
> +M: Felipe Balbi <balbi@kernel.org>
> +L: qemu-arm@nongnu.org
> +S: Maintained
> +F: hw/arm/olimex-stm32-h405.c
> +
>  SmartFusion2
>  M: Subbaraya Sundeep <sundeep.lkml@gmail.com>
>  M: Peter Maydell <peter.maydell@linaro.org>
> diff --git a/configs/devices/arm-softmmu/default.mak 
> b/configs/devices/arm-softmmu/default.mak
> index 6985a25377a0..1b49a7830c7e 100644
> --- a/configs/devices/arm-softmmu/default.mak
> +++ b/configs/devices/arm-softmmu/default.mak
> @@ -30,6 +30,7 @@ CONFIG_COLLIE=y
>  CONFIG_ASPEED_SOC=y
>  CONFIG_NETDUINO2=y
>  CONFIG_NETDUINOPLUS2=y
> +CONFIG_OLIMEX_STM32_H405=y
>  CONFIG_MPS2=y
>  CONFIG_RASPI=y
>  CONFIG_DIGIC=y
> diff --git a/docs/system/arm/stm32.rst b/docs/system/arm/stm32.rst
> index 508b92cf862b..d7265b763d47 100644
> --- a/docs/system/arm/stm32.rst
> +++ b/docs/system/arm/stm32.rst
> @@ -20,6 +20,7 @@ The STM32F4 series is based on ARM Cortex-M4F core. This 
> series is pin-to-pin
>  compatible with STM32F2 series. The following machines are based on this 
> chip :
>
>  - ``netduinoplus2``     Netduino Plus 2 board with STM32F405RGT6 
> microcontroller
> +- ``olimex-stm32-h405`` Olimex STM32 H405 board with STM32F405RGT6 
> microcontroller
>
>  There are many other STM32 series that are currently not supported by QEMU.
>
> diff --git a/hw/arm/Kconfig b/hw/arm/Kconfig
> index 17fcde8e1ccc..9143533ef792 100644
> --- a/hw/arm/Kconfig
> +++ b/hw/arm/Kconfig
> @@ -119,6 +119,10 @@ config NETDUINOPLUS2
>      bool
>      select STM32F405_SOC
>
> +config OLIMEX_STM32_H405
> +    bool
> +    select STM32F405_SOC
> +
>  config NSERIES
>      bool
>      select OMAP
> diff --git a/hw/arm/meson.build b/hw/arm/meson.build
> index 92f9f6e000ea..76d4d650e42e 100644
> --- a/hw/arm/meson.build
> +++ b/hw/arm/meson.build
> @@ -12,6 +12,7 @@ arm_ss.add(when: 'CONFIG_MICROBIT', if_true: 
> files('microbit.c'))
>  arm_ss.add(when: 'CONFIG_MUSICPAL', if_true: files('musicpal.c'))
>  arm_ss.add(when: 'CONFIG_NETDUINO2', if_true: files('netduino2.c'))
>  arm_ss.add(when: 'CONFIG_NETDUINOPLUS2', if_true: files('netduinoplus2.c'))
> +arm_ss.add(when: 'CONFIG_OLIMEX_STM32_H405', if_true: 
> files('olimex-stm32-h405.c'))
>  arm_ss.add(when: 'CONFIG_NPCM7XX', if_true: files('npcm7xx.c', 
> 'npcm7xx_boards.c'))
>  arm_ss.add(when: 'CONFIG_NSERIES', if_true: files('nseries.c'))
>  arm_ss.add(when: 'CONFIG_SX1', if_true: files('omap_sx1.c'))
> diff --git a/hw/arm/olimex-stm32-h405.c b/hw/arm/olimex-stm32-h405.c
> new file mode 100644
> index 000000000000..3aa61c91b759
> --- /dev/null
> +++ b/hw/arm/olimex-stm32-h405.c
> @@ -0,0 +1,69 @@
> +/*
> + * ST STM32VLDISCOVERY machine
> + * Olimex STM32-H405 machine
> + *
> + * Copyright (c) 2022 Felipe Balbi <balbi@kernel.org>
> + *
> + * 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 "hw/boards.h"
> +#include "hw/qdev-properties.h"
> +#include "hw/qdev-clock.h"
> +#include "qemu/error-report.h"
> +#include "hw/arm/stm32f405_soc.h"
> +#include "hw/arm/boot.h"
> +
> +/* olimex-stm32-h405 implementation is derived from netduinoplus2 */
> +
> +/* Main SYSCLK frequency in Hz (168MHz) */
> +#define SYSCLK_FRQ 168000000ULL
> +
> +static void olimex_stm32_h405_init(MachineState *machine)
> +{
> +    DeviceState *dev;
> +    Clock *sysclk;
> +
> +    /* This clock doesn't need migration because it is fixed-frequency */
> +    sysclk = clock_new(OBJECT(machine), "SYSCLK");
> +    clock_set_hz(sysclk, SYSCLK_FRQ);
> +
> +    dev = qdev_new(TYPE_STM32F405_SOC);
> +    qdev_prop_set_string(dev, "cpu-type", ARM_CPU_TYPE_NAME("cortex-m4"));
> +    qdev_connect_clock_in(dev, "sysclk", sysclk);
> +    sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
> +
> +    armv7m_load_kernel(ARM_CPU(first_cpu),
> +                       machine->kernel_filename,
> +                       0, FLASH_SIZE);
> +}
> +
> +static void olimex_stm32_h405_machine_init(MachineClass *mc)
> +{
> +    mc->desc = "Olimex STM32-H405 (Cortex-M4)";
> +    mc->init = olimex_stm32_h405_init;
> +    mc->default_cpu_type = ARM_CPU_TYPE_NAME("cortex-m4");
> +
> +    /* SRAM pre-allocated as part of the SoC instantiation */
> +    mc->default_ram_size = 0;
> +}
> +
> +DEFINE_MACHINE("olimex-stm32-h405", olimex_stm32_h405_machine_init)
> --
> 2.39.0
>
>