ewp.py converts as best it can IAR project files into GNU Makefiles.

hg clone https://hg.kewl.org/pub/ewp.py
cd ewp.py
sudo make install

git clone --recursive https://github.com/STMicroelectronics/STM32CubeH7

cd STM32CubeH7/Projects/STM32H745I-DISCO/Applications/FreeRTOS/FreeRTOS_AMP_RTOS_BareMetal/

ewp.py . EWARM/Project.ewp
STM32H745I_Discovery_CM4
STM32H745I_Discovery_CM7

ewp.py -p1 . EWARM/Project.ewp STM32H745I_Discovery_CM4 > Makefile.cm4
ewp.py -p1 . EWARM/Project.ewp STM32H745I_Discovery_CM7 > Makefile.cm7

For each Makefile alter FIXME_CPU and FIXME_ABI for the CPU platform.

In these cases it is cortex-m4, cortex-m7 and hard.

Locate FIXME_LDS and ensure the correct linker script is selected and then remove the FIXME_LDS text.

Change paths to GCC from IAR in the FreeRTOS source and includes entries.

Apply this patch if you want the backlight to be disabled when running the demo.

--- CM4/Src/main.c.orig 2024-10-07 13:22:39.704687900 +0100
+++ CM4/Src/main.c      2024-10-07 13:24:31.570592100 +0100
@@ -74,6 +74,15 @@
      */
   HAL_Init();

+  __HAL_RCC_GPIOK_CLK_ENABLE();
+  GPIO_InitTypeDef GPIO_InitStruct = {0};
+  GPIO_InitStruct.Mode  = GPIO_MODE_OUTPUT_PP;
+  GPIO_InitStruct.Pull  = GPIO_NOPULL;
+  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_MEDIUM;
+  GPIO_InitStruct.Pin   = GPIO_PIN_0;
+  HAL_GPIO_Init(GPIOK, &GPIO_InitStruct);
+  HAL_GPIO_WritePin(GPIOK, GPIO_PIN_0, GPIO_PIN_RESET);
+
   BSP_LED_Init(LED1);
   BSP_LED_Init(LED2);

make -f Makefile.cm4
make -f Makefile.cm7

srec_cat build/STM32H745I_Discovery_CM7/STM32H745I_Discovery_CM7.hex -Intel build/STM32H745I_Discovery_CM4/STM32H745I_Discovery_CM4.hex -Intel -out Project.hex -Intel

Program `Project.hex' with STM32CubeProgrammer (attempt using OpenOCD failed and needs investigation).

The demo FreeRTOS_AMP_Dual_RTOS initially runs ok and then stalls so it would appear to be buggy. FreeRTOS_AMP_RTOS_BareMetal works fine.

A work-in-progress port using this script can be found here.