Commit 78fb2313 authored by Francois Ramu's avatar Francois Ramu Committed by David Leach
Browse files

boards: arm: stm32u585 disco with external memory region for XiP 



Declare a sub-region of the whole ext_memory with attributes
ATTR_MPU_IO so that XiP becomes possible on this external
octo- NOR flash. Use the STM32CubeProgrammer runner
with the external loader for flashing.

Signed-off-by: default avatarFrancois Ramu <francois.ramu@st.com>
parent 7b73a343

boards/st/b_u585i_iot02a/b_u585i_iot02a.dts

+10 −0
Original line number Diff line number Diff line
@@ -6,6 +6,8 @@ 


/dts-v1/;

#include "b_u585i_iot02a-common.dtsi"

#include <zephyr/dt-bindings/memory-attr/memory-attr.h>

#include <zephyr/dt-bindings/memory-attr/memory-attr-arm.h>



/ {

	model = "STMicroelectronics B-U585I-IOT02A discovery kit";
@@ -25,6 +27,14 @@ 
		led1 = &red_led_1;

		sw0 = &user_button;

	};



	octo_nor: memory@70000000 {

		compatible = "zephyr,memory-region";

		reg = <0x70000000 DT_SIZE_M(64)>;

		zephyr,memory-region = "EXTMEM";

		/* The ATTR_MPU_EXTMEM attribut causing a MPU FAULT */

		zephyr,memory-attr = <( DT_MEM_ARM(ATTR_MPU_IO) )>;

	};

};



&flash0 {

boards/st/b_u585i_iot02a/board.cmake

+6 −1
Original line number Diff line number Diff line
@@ -12,8 +12,13 @@ if(CONFIG_BUILD_WITH_TFM) 
  endif()

endif()



board_runner_args(stm32cubeprogrammer "--erase" "--port=swd" "--reset-mode=hw")

if(CONFIG_STM32_MEMMAP)

board_runner_args(stm32cubeprogrammer "--port=swd" "--reset-mode=hw")

board_runner_args(stm32cubeprogrammer "--hex-file=${ZEPHYR_BASE}/build/zephyr/zephyr.hex")

board_runner_args(stm32cubeprogrammer "--extload=MX25LM51245G_STM32U585I-IOT02A.stldr")

else()

board_runner_args(stm32cubeprogrammer "--erase" "--port=swd" "--reset-mode=hw")

endif()



board_runner_args(openocd "--tcl-port=6666")

board_runner_args(openocd --cmd-pre-init "gdb_report_data_abort enable")

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