diff --git a/boards/adi/adi_eval_adin1110ebz/Kconfig.adi_eval_adin1110ebz b/boards/adi/adi_eval_adin1110ebz/Kconfig.adi_eval_adin1110ebz
new file mode 100644
index 00000000000000..366fff3086b66f
--- /dev/null
+++ b/boards/adi/adi_eval_adin1110ebz/Kconfig.adi_eval_adin1110ebz
@@ -0,0 +1,5 @@
+# Copyright (c) 2024 BayLibre
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_ADI_EVAL_ADIN1110EBZ
+	select SOC_STM32L4S5XX
diff --git a/boards/boards_legacy/arm/adi_eval_adin1110ebz/Kconfig.defconfig b/boards/adi/adi_eval_adin1110ebz/Kconfig.defconfig
similarity index 90%
rename from boards/boards_legacy/arm/adi_eval_adin1110ebz/Kconfig.defconfig
rename to boards/adi/adi_eval_adin1110ebz/Kconfig.defconfig
index 79e309af4cd612..9c33c1d288d63b 100644
--- a/boards/boards_legacy/arm/adi_eval_adin1110ebz/Kconfig.defconfig
+++ b/boards/adi/adi_eval_adin1110ebz/Kconfig.defconfig
@@ -5,9 +5,6 @@
 
 if BOARD_ADI_EVAL_ADIN1110EBZ
 
-config BOARD
-	default "adi_eval_adin1110ebz"
-
 config SPI_STM32_INTERRUPT
 	default y
 	depends on SPI
diff --git a/boards/boards_legacy/arm/adi_eval_adin1110ebz/adi_eval_adin1110ebz.dts b/boards/adi/adi_eval_adin1110ebz/adi_eval_adin1110ebz.dts
similarity index 100%
rename from boards/boards_legacy/arm/adi_eval_adin1110ebz/adi_eval_adin1110ebz.dts
rename to boards/adi/adi_eval_adin1110ebz/adi_eval_adin1110ebz.dts
diff --git a/boards/boards_legacy/arm/adi_eval_adin1110ebz/adi_eval_adin1110ebz.yaml b/boards/adi/adi_eval_adin1110ebz/adi_eval_adin1110ebz.yaml
similarity index 100%
rename from boards/boards_legacy/arm/adi_eval_adin1110ebz/adi_eval_adin1110ebz.yaml
rename to boards/adi/adi_eval_adin1110ebz/adi_eval_adin1110ebz.yaml
diff --git a/boards/boards_legacy/arm/adi_eval_adin1110ebz/adi_eval_adin1110ebz_defconfig b/boards/adi/adi_eval_adin1110ebz/adi_eval_adin1110ebz_defconfig
similarity index 72%
rename from boards/boards_legacy/arm/adi_eval_adin1110ebz/adi_eval_adin1110ebz_defconfig
rename to boards/adi/adi_eval_adin1110ebz/adi_eval_adin1110ebz_defconfig
index 15174238c664cd..c19a47618d1bb7 100644
--- a/boards/boards_legacy/arm/adi_eval_adin1110ebz/adi_eval_adin1110ebz_defconfig
+++ b/boards/adi/adi_eval_adin1110ebz/adi_eval_adin1110ebz_defconfig
@@ -1,9 +1,5 @@
 # SPDX-License-Identifier: Apache-2.0
 
-CONFIG_BOARD_ADI_EVAL_ADIN1110EBZ=y
-CONFIG_SOC_SERIES_STM32L4X=y
-CONFIG_SOC_STM32L4S5XX=y
-
 # enable uart driver
 CONFIG_SERIAL=y
 
diff --git a/boards/boards_legacy/arm/adi_eval_adin1110ebz/arduino_r3_connector.dtsi b/boards/adi/adi_eval_adin1110ebz/arduino_r3_connector.dtsi
similarity index 100%
rename from boards/boards_legacy/arm/adi_eval_adin1110ebz/arduino_r3_connector.dtsi
rename to boards/adi/adi_eval_adin1110ebz/arduino_r3_connector.dtsi
diff --git a/boards/boards_legacy/arm/adi_eval_adin1110ebz/board.cmake b/boards/adi/adi_eval_adin1110ebz/board.cmake
similarity index 100%
rename from boards/boards_legacy/arm/adi_eval_adin1110ebz/board.cmake
rename to boards/adi/adi_eval_adin1110ebz/board.cmake
diff --git a/boards/adi/adi_eval_adin1110ebz/board.yml b/boards/adi/adi_eval_adin1110ebz/board.yml
new file mode 100644
index 00000000000000..e5af49e3f351f4
--- /dev/null
+++ b/boards/adi/adi_eval_adin1110ebz/board.yml
@@ -0,0 +1,5 @@
+board:
+  name: adi_eval_adin1110ebz
+  vendor: adi
+  socs:
+    - name: stm32l4s5xx
diff --git a/boards/boards_legacy/arm/adi_eval_adin1110ebz/doc/img/adi_eval_adin1110ebz.webp b/boards/adi/adi_eval_adin1110ebz/doc/img/adi_eval_adin1110ebz.webp
similarity index 100%
rename from boards/boards_legacy/arm/adi_eval_adin1110ebz/doc/img/adi_eval_adin1110ebz.webp
rename to boards/adi/adi_eval_adin1110ebz/doc/img/adi_eval_adin1110ebz.webp
diff --git a/boards/boards_legacy/arm/adi_eval_adin1110ebz/doc/index.rst b/boards/adi/adi_eval_adin1110ebz/doc/index.rst
similarity index 98%
rename from boards/boards_legacy/arm/adi_eval_adin1110ebz/doc/index.rst
rename to boards/adi/adi_eval_adin1110ebz/doc/index.rst
index 3bcc3167596a4b..552dab6d542455 100644
--- a/boards/boards_legacy/arm/adi_eval_adin1110ebz/doc/index.rst
+++ b/boards/adi/adi_eval_adin1110ebz/doc/index.rst
@@ -82,7 +82,7 @@ following hardware features:
 
 The default configuration can be found in the defconfig file:
 
-	``boards/arm/adi_eval_adin1110ebz/adi_eval_adin1110ebz_defconfig``
+	:zephyr_file:`boards/adi/adi_eval_adin1110ebz/adi_eval_adin1110ebz_defconfig`
 
 
 Connections and IOs
diff --git a/boards/boards_legacy/arm/adi_eval_adin1110ebz/pre_dt_board.cmake b/boards/adi/adi_eval_adin1110ebz/pre_dt_board.cmake
similarity index 100%
rename from boards/boards_legacy/arm/adi_eval_adin1110ebz/pre_dt_board.cmake
rename to boards/adi/adi_eval_adin1110ebz/pre_dt_board.cmake
diff --git a/boards/boards_legacy/arm/adi_eval_adin1110ebz/support/openocd.cfg b/boards/adi/adi_eval_adin1110ebz/support/openocd.cfg
similarity index 100%
rename from boards/boards_legacy/arm/adi_eval_adin1110ebz/support/openocd.cfg
rename to boards/adi/adi_eval_adin1110ebz/support/openocd.cfg
diff --git a/boards/adi/adi_eval_adin2111ebz/Kconfig.adi_eval_adin2111ebz b/boards/adi/adi_eval_adin2111ebz/Kconfig.adi_eval_adin2111ebz
new file mode 100644
index 00000000000000..9b051ece984485
--- /dev/null
+++ b/boards/adi/adi_eval_adin2111ebz/Kconfig.adi_eval_adin2111ebz
@@ -0,0 +1,5 @@
+# Copyright (c) 2024 BayLibre
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_ADI_EVAL_ADIN2111EBZ
+	select SOC_STM32L4S5XX
diff --git a/boards/boards_legacy/arm/adi_eval_adin2111ebz/Kconfig.defconfig b/boards/adi/adi_eval_adin2111ebz/Kconfig.defconfig
similarity index 91%
rename from boards/boards_legacy/arm/adi_eval_adin2111ebz/Kconfig.defconfig
rename to boards/adi/adi_eval_adin2111ebz/Kconfig.defconfig
index 41dd579738c278..ae255907083f35 100644
--- a/boards/boards_legacy/arm/adi_eval_adin2111ebz/Kconfig.defconfig
+++ b/boards/adi/adi_eval_adin2111ebz/Kconfig.defconfig
@@ -5,9 +5,6 @@
 
 if BOARD_ADI_EVAL_ADIN2111EBZ
 
-config BOARD
-	default "adi_eval_adin2111ebz"
-
 config SPI_STM32_INTERRUPT
 	default y
 	depends on SPI
diff --git a/boards/boards_legacy/arm/adi_eval_adin2111ebz/adi_eval_adin2111ebz.dts b/boards/adi/adi_eval_adin2111ebz/adi_eval_adin2111ebz.dts
similarity index 100%
rename from boards/boards_legacy/arm/adi_eval_adin2111ebz/adi_eval_adin2111ebz.dts
rename to boards/adi/adi_eval_adin2111ebz/adi_eval_adin2111ebz.dts
diff --git a/boards/boards_legacy/arm/adi_eval_adin2111ebz/adi_eval_adin2111ebz.yaml b/boards/adi/adi_eval_adin2111ebz/adi_eval_adin2111ebz.yaml
similarity index 100%
rename from boards/boards_legacy/arm/adi_eval_adin2111ebz/adi_eval_adin2111ebz.yaml
rename to boards/adi/adi_eval_adin2111ebz/adi_eval_adin2111ebz.yaml
diff --git a/boards/boards_legacy/arm/adi_eval_adin2111ebz/adi_eval_adin2111ebz_defconfig b/boards/adi/adi_eval_adin2111ebz/adi_eval_adin2111ebz_defconfig
similarity index 72%
rename from boards/boards_legacy/arm/adi_eval_adin2111ebz/adi_eval_adin2111ebz_defconfig
rename to boards/adi/adi_eval_adin2111ebz/adi_eval_adin2111ebz_defconfig
index f7e4d9c4ab350a..c19a47618d1bb7 100644
--- a/boards/boards_legacy/arm/adi_eval_adin2111ebz/adi_eval_adin2111ebz_defconfig
+++ b/boards/adi/adi_eval_adin2111ebz/adi_eval_adin2111ebz_defconfig
@@ -1,9 +1,5 @@
 # SPDX-License-Identifier: Apache-2.0
 
-CONFIG_BOARD_ADI_EVAL_ADIN2111EBZ=y
-CONFIG_SOC_SERIES_STM32L4X=y
-CONFIG_SOC_STM32L4S5XX=y
-
 # enable uart driver
 CONFIG_SERIAL=y
 
diff --git a/boards/boards_legacy/arm/adi_eval_adin2111ebz/board.cmake b/boards/adi/adi_eval_adin2111ebz/board.cmake
similarity index 100%
rename from boards/boards_legacy/arm/adi_eval_adin2111ebz/board.cmake
rename to boards/adi/adi_eval_adin2111ebz/board.cmake
diff --git a/boards/adi/adi_eval_adin2111ebz/board.yml b/boards/adi/adi_eval_adin2111ebz/board.yml
new file mode 100644
index 00000000000000..0151d544acab44
--- /dev/null
+++ b/boards/adi/adi_eval_adin2111ebz/board.yml
@@ -0,0 +1,5 @@
+board:
+  name: adi_eval_adin2111ebz
+  vendor: adi
+  socs:
+    - name: stm32l4s5xx
diff --git a/boards/boards_legacy/arm/adi_eval_adin2111ebz/doc/img/adi_eval_adin2111ebz.webp b/boards/adi/adi_eval_adin2111ebz/doc/img/adi_eval_adin2111ebz.webp
similarity index 100%
rename from boards/boards_legacy/arm/adi_eval_adin2111ebz/doc/img/adi_eval_adin2111ebz.webp
rename to boards/adi/adi_eval_adin2111ebz/doc/img/adi_eval_adin2111ebz.webp
diff --git a/boards/boards_legacy/arm/adi_eval_adin2111ebz/doc/index.rst b/boards/adi/adi_eval_adin2111ebz/doc/index.rst
similarity index 98%
rename from boards/boards_legacy/arm/adi_eval_adin2111ebz/doc/index.rst
rename to boards/adi/adi_eval_adin2111ebz/doc/index.rst
index ac9d33aa2853b3..afeafa44a22fea 100644
--- a/boards/boards_legacy/arm/adi_eval_adin2111ebz/doc/index.rst
+++ b/boards/adi/adi_eval_adin2111ebz/doc/index.rst
@@ -86,7 +86,7 @@ following hardware features:
 
 The default configuration can be found in the defconfig file:
 
-	``boards/arm/adi_eval_adin2111ebz/adi_eval_adin2111ebz_defconfig``
+	:zephyr_file:`boards/adi/adi_eval_adin2111ebz/adi_eval_adin2111ebz_defconfig`
 
 
 Connections and IOs
diff --git a/boards/boards_legacy/arm/adi_eval_adin2111ebz/pre_dt_board.cmake b/boards/adi/adi_eval_adin2111ebz/pre_dt_board.cmake
similarity index 100%
rename from boards/boards_legacy/arm/adi_eval_adin2111ebz/pre_dt_board.cmake
rename to boards/adi/adi_eval_adin2111ebz/pre_dt_board.cmake
diff --git a/boards/boards_legacy/arm/adi_eval_adin2111ebz/support/openocd.cfg b/boards/adi/adi_eval_adin2111ebz/support/openocd.cfg
similarity index 100%
rename from boards/boards_legacy/arm/adi_eval_adin2111ebz/support/openocd.cfg
rename to boards/adi/adi_eval_adin2111ebz/support/openocd.cfg
diff --git a/boards/alientek/index.rst b/boards/alientek/index.rst
new file mode 100644
index 00000000000000..f124ce93459efe
--- /dev/null
+++ b/boards/alientek/index.rst
@@ -0,0 +1,10 @@
+.. _boards-alientek:
+
+Alientek
+########
+
+.. toctree::
+   :maxdepth: 1
+   :glob:
+
+   **/*
diff --git a/boards/alientek/pandora_stm32l475/Kconfig.pandora_stm32l475 b/boards/alientek/pandora_stm32l475/Kconfig.pandora_stm32l475
new file mode 100644
index 00000000000000..1d42c17a83d4c5
--- /dev/null
+++ b/boards/alientek/pandora_stm32l475/Kconfig.pandora_stm32l475
@@ -0,0 +1,5 @@
+# Copyright (c) 2023 Tisilicon
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_PANDORA_STM32L475
+	select SOC_STM32L475XX
diff --git a/boards/boards_legacy/arm/pandora_stm32l475/board.cmake b/boards/alientek/pandora_stm32l475/board.cmake
similarity index 100%
rename from boards/boards_legacy/arm/pandora_stm32l475/board.cmake
rename to boards/alientek/pandora_stm32l475/board.cmake
diff --git a/boards/alientek/pandora_stm32l475/board.yml b/boards/alientek/pandora_stm32l475/board.yml
new file mode 100644
index 00000000000000..725d13c5f305a5
--- /dev/null
+++ b/boards/alientek/pandora_stm32l475/board.yml
@@ -0,0 +1,5 @@
+board:
+  name: pandora_stm32l475
+  vendor: alientek
+  socs:
+    - name: stm32l475xx
diff --git a/boards/boards_legacy/arm/pandora_stm32l475/doc/img/pandora_stm32l475.jpg b/boards/alientek/pandora_stm32l475/doc/img/pandora_stm32l475.jpg
similarity index 100%
rename from boards/boards_legacy/arm/pandora_stm32l475/doc/img/pandora_stm32l475.jpg
rename to boards/alientek/pandora_stm32l475/doc/img/pandora_stm32l475.jpg
diff --git a/boards/boards_legacy/arm/pandora_stm32l475/doc/index.rst b/boards/alientek/pandora_stm32l475/doc/index.rst
similarity index 98%
rename from boards/boards_legacy/arm/pandora_stm32l475/doc/index.rst
rename to boards/alientek/pandora_stm32l475/doc/index.rst
index 76da038e9ec4b0..cee292e1e56acb 100644
--- a/boards/boards_legacy/arm/pandora_stm32l475/doc/index.rst
+++ b/boards/alientek/pandora_stm32l475/doc/index.rst
@@ -1,4 +1,4 @@
-.. _stm32l475ve_pandora_board:
+.. _pandora_stm32l475_board:
 
 Alientek STM32L475 Pandora
 ##########################
@@ -127,7 +127,7 @@ Other hardware features are not yet supported on this Zephyr port.
 
 The default configuration can be found in the defconfig file:
 
-	``boards/arm/pandora_stm32l475/pandora_stm32l475_defconfig``
+	:zephyr_file:`boards/alientek/pandora_stm32l475/pandora_stm32l475_defconfig`
 
 
 Connections and IOs
diff --git a/boards/boards_legacy/arm/pandora_stm32l475/pandora_stm32l475.dts b/boards/alientek/pandora_stm32l475/pandora_stm32l475.dts
similarity index 100%
rename from boards/boards_legacy/arm/pandora_stm32l475/pandora_stm32l475.dts
rename to boards/alientek/pandora_stm32l475/pandora_stm32l475.dts
diff --git a/boards/boards_legacy/arm/pandora_stm32l475/pandora_stm32l475.yaml b/boards/alientek/pandora_stm32l475/pandora_stm32l475.yaml
similarity index 100%
rename from boards/boards_legacy/arm/pandora_stm32l475/pandora_stm32l475.yaml
rename to boards/alientek/pandora_stm32l475/pandora_stm32l475.yaml
diff --git a/boards/boards_legacy/arm/pandora_stm32l475/pandora_stm32l475_defconfig b/boards/alientek/pandora_stm32l475/pandora_stm32l475_defconfig
similarity index 85%
rename from boards/boards_legacy/arm/pandora_stm32l475/pandora_stm32l475_defconfig
rename to boards/alientek/pandora_stm32l475/pandora_stm32l475_defconfig
index 6b76862a311973..82ee7285d52d8a 100644
--- a/boards/boards_legacy/arm/pandora_stm32l475/pandora_stm32l475_defconfig
+++ b/boards/alientek/pandora_stm32l475/pandora_stm32l475_defconfig
@@ -1,8 +1,5 @@
 # SPDX-License-Identifier: Apache-2.0
 
-CONFIG_SOC_SERIES_STM32L4X=y
-CONFIG_SOC_STM32L475XX=y
-
 # Enable MPU
 CONFIG_ARM_MPU=y
 
diff --git a/boards/boards_legacy/arm/pandora_stm32l475/support/openocd.cfg b/boards/alientek/pandora_stm32l475/support/openocd.cfg
similarity index 100%
rename from boards/boards_legacy/arm/pandora_stm32l475/support/openocd.cfg
rename to boards/alientek/pandora_stm32l475/support/openocd.cfg
diff --git a/boards/blues/index.rst b/boards/blues/index.rst
new file mode 100644
index 00000000000000..a4f76b4c9fadd8
--- /dev/null
+++ b/boards/blues/index.rst
@@ -0,0 +1,10 @@
+.. _boards-blues:
+
+Blues
+#####
+
+.. toctree::
+   :maxdepth: 1
+   :glob:
+
+   **/*
diff --git a/boards/boards_legacy/arm/swan_r5/CMakeLists.txt b/boards/blues/swan_r5/CMakeLists.txt
similarity index 100%
rename from boards/boards_legacy/arm/swan_r5/CMakeLists.txt
rename to boards/blues/swan_r5/CMakeLists.txt
diff --git a/boards/boards_legacy/arm/swan_r5/Kconfig.defconfig b/boards/blues/swan_r5/Kconfig.defconfig
similarity index 90%
rename from boards/boards_legacy/arm/swan_r5/Kconfig.defconfig
rename to boards/blues/swan_r5/Kconfig.defconfig
index 0ab4dbfb0d0f26..a9d7a1e00b1a2e 100644
--- a/boards/boards_legacy/arm/swan_r5/Kconfig.defconfig
+++ b/boards/blues/swan_r5/Kconfig.defconfig
@@ -5,9 +5,6 @@
 
 if BOARD_SWAN_R5
 
-config BOARD
-	default "swan_r5"
-
 config SPI_STM32_INTERRUPT
 	default y
 	depends on SPI
diff --git a/boards/blues/swan_r5/Kconfig.swan_r5 b/boards/blues/swan_r5/Kconfig.swan_r5
new file mode 100644
index 00000000000000..6b3b835c31f1e2
--- /dev/null
+++ b/boards/blues/swan_r5/Kconfig.swan_r5
@@ -0,0 +1,5 @@
+# Copyright (c) 2022 Blues Inc.
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_SWAN_R5
+	select SOC_STM32L4R5XX
diff --git a/boards/boards_legacy/arm/swan_r5/board.c b/boards/blues/swan_r5/board.c
similarity index 100%
rename from boards/boards_legacy/arm/swan_r5/board.c
rename to boards/blues/swan_r5/board.c
diff --git a/boards/boards_legacy/arm/swan_r5/board.cmake b/boards/blues/swan_r5/board.cmake
similarity index 100%
rename from boards/boards_legacy/arm/swan_r5/board.cmake
rename to boards/blues/swan_r5/board.cmake
diff --git a/boards/blues/swan_r5/board.yml b/boards/blues/swan_r5/board.yml
new file mode 100644
index 00000000000000..d9d4096e352a47
--- /dev/null
+++ b/boards/blues/swan_r5/board.yml
@@ -0,0 +1,5 @@
+board:
+  name: swan_r5
+  vendor: blues
+  socs:
+    - name: stm32l4r5xx
diff --git a/boards/boards_legacy/arm/swan_r5/doc/img/swan.jpg b/boards/blues/swan_r5/doc/img/swan.jpg
similarity index 100%
rename from boards/boards_legacy/arm/swan_r5/doc/img/swan.jpg
rename to boards/blues/swan_r5/doc/img/swan.jpg
diff --git a/boards/boards_legacy/arm/swan_r5/doc/index.rst b/boards/blues/swan_r5/doc/index.rst
similarity index 99%
rename from boards/boards_legacy/arm/swan_r5/doc/index.rst
rename to boards/blues/swan_r5/doc/index.rst
index 8a70207bf5887b..644e82e86dd95c 100644
--- a/boards/boards_legacy/arm/swan_r5/doc/index.rst
+++ b/boards/blues/swan_r5/doc/index.rst
@@ -121,7 +121,7 @@ hardware features:
 Other hardware features are not yet supported on this Zephyr port.
 
 The default configuration can be found in the defconfig file:
-``boards/arm/swan_r5/swan_r5_defconfig``
+:zephyr_file:`boards/blues/swan_r5/swan_r5_defconfig`
 
 
 Connections and IOs
diff --git a/boards/boards_legacy/arm/swan_r5/feather_connector.dtsi b/boards/blues/swan_r5/feather_connector.dtsi
similarity index 100%
rename from boards/boards_legacy/arm/swan_r5/feather_connector.dtsi
rename to boards/blues/swan_r5/feather_connector.dtsi
diff --git a/boards/boards_legacy/arm/nucleo_l476rg/support/openocd.cfg b/boards/blues/swan_r5/support/openocd.cfg
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l476rg/support/openocd.cfg
rename to boards/blues/swan_r5/support/openocd.cfg
diff --git a/boards/boards_legacy/arm/swan_r5/swan_r5.dts b/boards/blues/swan_r5/swan_r5.dts
similarity index 100%
rename from boards/boards_legacy/arm/swan_r5/swan_r5.dts
rename to boards/blues/swan_r5/swan_r5.dts
diff --git a/boards/boards_legacy/arm/swan_r5/swan_r5.yaml b/boards/blues/swan_r5/swan_r5.yaml
similarity index 100%
rename from boards/boards_legacy/arm/swan_r5/swan_r5.yaml
rename to boards/blues/swan_r5/swan_r5.yaml
diff --git a/boards/boards_legacy/arm/swan_r5/swan_r5_defconfig b/boards/blues/swan_r5/swan_r5_defconfig
similarity index 86%
rename from boards/boards_legacy/arm/swan_r5/swan_r5_defconfig
rename to boards/blues/swan_r5/swan_r5_defconfig
index caaca50d8b881c..596cbc88cbdcd5 100644
--- a/boards/boards_legacy/arm/swan_r5/swan_r5_defconfig
+++ b/boards/blues/swan_r5/swan_r5_defconfig
@@ -1,8 +1,5 @@
 # SPDX-License-Identifier: Apache-2.0
 
-CONFIG_SOC_SERIES_STM32L4X=y
-CONFIG_SOC_STM32L4R5XX=y
-
 # enable uart driver
 CONFIG_SERIAL=y
 
diff --git a/boards/boards_legacy/arm/adi_eval_adin1110ebz/Kconfig.board b/boards/boards_legacy/arm/adi_eval_adin1110ebz/Kconfig.board
deleted file mode 100644
index 29f1e3b8dbcc28..00000000000000
--- a/boards/boards_legacy/arm/adi_eval_adin1110ebz/Kconfig.board
+++ /dev/null
@@ -1,8 +0,0 @@
-# ADI EVAL-ADIN1110EBZ board configuration
-
-# Copyright (c) 2024 BayLibre
-# SPDX-License-Identifier: Apache-2.0
-
-config BOARD_ADI_EVAL_ADIN1110EBZ
-	bool "ADI EVAL-ADIN1110EBZ evaulation board"
-	depends on SOC_STM32L4S5XX
diff --git a/boards/boards_legacy/arm/adi_eval_adin2111ebz/Kconfig.board b/boards/boards_legacy/arm/adi_eval_adin2111ebz/Kconfig.board
deleted file mode 100644
index f173947c39b60a..00000000000000
--- a/boards/boards_legacy/arm/adi_eval_adin2111ebz/Kconfig.board
+++ /dev/null
@@ -1,8 +0,0 @@
-# ADI EVAL-ADIN2111EBZ board configuration
-
-# Copyright (c) 2024 BayLibre
-# SPDX-License-Identifier: Apache-2.0
-
-config BOARD_ADI_EVAL_ADIN2111EBZ
-	bool "ADI EVAL-ADIN2111EBZ evaulation board"
-	depends on SOC_STM32L4S5XX
diff --git a/boards/boards_legacy/arm/b_l4s5i_iot01a/Kconfig.board b/boards/boards_legacy/arm/b_l4s5i_iot01a/Kconfig.board
deleted file mode 100644
index 927b683f71e188..00000000000000
--- a/boards/boards_legacy/arm/b_l4s5i_iot01a/Kconfig.board
+++ /dev/null
@@ -1,8 +0,0 @@
-# B_L4S5I_IOT01A discovery kit configuration
-
-# Copyright (c) 2020 STMicroelectronics
-# SPDX-License-Identifier: Apache-2.0
-
-config BOARD_B_L4S5I_IOT01A
-	bool "STM32L4S5I IOT Discovery kit"
-	depends on SOC_STM32L4S5XX
diff --git a/boards/boards_legacy/arm/disco_l475_iot1/Kconfig.board b/boards/boards_legacy/arm/disco_l475_iot1/Kconfig.board
deleted file mode 100644
index 98e8d2917827db..00000000000000
--- a/boards/boards_legacy/arm/disco_l475_iot1/Kconfig.board
+++ /dev/null
@@ -1,8 +0,0 @@
-# Discovery IoT L475 board configuration
-
-# Copyright (c) 2017 Linaro Limited
-# SPDX-License-Identifier: Apache-2.0
-
-config BOARD_DISCO_L475_IOT1
-	bool "Discovery IoT L475 Development Board"
-	depends on SOC_STM32L475XX
diff --git a/boards/boards_legacy/arm/nucleo_l412rb_p/Kconfig.board b/boards/boards_legacy/arm/nucleo_l412rb_p/Kconfig.board
deleted file mode 100644
index b81257b7eb7d11..00000000000000
--- a/boards/boards_legacy/arm/nucleo_l412rb_p/Kconfig.board
+++ /dev/null
@@ -1,8 +0,0 @@
-# STM32L412RB Nucleo board configuration
-
-# Copyright (c) 2021 Guðni Már Gilbert
-# SPDX-License-Identifier: Apache-2.0
-
-config BOARD_NUCLEO_L412RB_P
-	bool "Nucleo L412RB-P Development Board"
-	depends on SOC_STM32L412XX
diff --git a/boards/boards_legacy/arm/nucleo_l432kc/Kconfig.board b/boards/boards_legacy/arm/nucleo_l432kc/Kconfig.board
deleted file mode 100644
index 5340455df002ad..00000000000000
--- a/boards/boards_legacy/arm/nucleo_l432kc/Kconfig.board
+++ /dev/null
@@ -1,9 +0,0 @@
-# STM32L432KC Nucleo board configuration
-
-# Copyright (c) 2016 Open-RnD Sp. z o.o.
-# Copyright (c) 2016 BayLibre, SAS
-# SPDX-License-Identifier: Apache-2.0
-
-config BOARD_NUCLEO_L432KC
-	bool "Nucleo L432KC Development Board"
-	depends on SOC_STM32L432XX
diff --git a/boards/boards_legacy/arm/nucleo_l433rc_p/Kconfig.board b/boards/boards_legacy/arm/nucleo_l433rc_p/Kconfig.board
deleted file mode 100644
index 3a53d91bc258a2..00000000000000
--- a/boards/boards_legacy/arm/nucleo_l433rc_p/Kconfig.board
+++ /dev/null
@@ -1,8 +0,0 @@
-# STM32L433RC Nucleo board configuration
-
-# Copyright (c) 2021 Matija Tudan
-# SPDX-License-Identifier: Apache-2.0
-
-config BOARD_NUCLEO_L433RC_P
-	bool "Nucleo L433RC-P Development Board"
-	depends on SOC_STM32L433XX
diff --git a/boards/boards_legacy/arm/nucleo_l452re/Kconfig.board b/boards/boards_legacy/arm/nucleo_l452re/Kconfig.board
deleted file mode 100644
index ba69b24e6e6ed2..00000000000000
--- a/boards/boards_legacy/arm/nucleo_l452re/Kconfig.board
+++ /dev/null
@@ -1,13 +0,0 @@
-# STM32L452RE Nucleo board configuration
-#
-# Copyright (c) 2019 Libre Solar Technologies GmbH
-#
-# SPDX-License-Identifier: Apache-2.0
-
-config BOARD_NUCLEO_L452RE
-	bool "Nucleo L452RE Development Board"
-	depends on SOC_STM32L452XX
-
-config BOARD_NUCLEO_L452RE_P
-	bool "Nucleo L452RE-P Development Board"
-	depends on SOC_STM32L452XX
diff --git a/boards/boards_legacy/arm/nucleo_l452re/Kconfig.defconfig b/boards/boards_legacy/arm/nucleo_l452re/Kconfig.defconfig
deleted file mode 100644
index 3da8b18ec74239..00000000000000
--- a/boards/boards_legacy/arm/nucleo_l452re/Kconfig.defconfig
+++ /dev/null
@@ -1,17 +0,0 @@
-# STM32L452RE Nucleo board configuration
-#
-# Copyright (c) 2019 Libre Solar Technologies GmbH
-#
-# SPDX-License-Identifier: Apache-2.0
-
-if BOARD_NUCLEO_L452RE || BOARD_NUCLEO_L452RE_P
-
-config BOARD
-	default "nucleo_l452re" if BOARD_NUCLEO_L452RE
-	default "nucleo_l452re_p" if BOARD_NUCLEO_L452RE_P
-
-config SPI_STM32_INTERRUPT
-	default y
-	depends on SPI
-
-endif # BOARD_NUCLEO_L452RE || BOARD_NUCLEO_L452RE_P
diff --git a/boards/boards_legacy/arm/nucleo_l476rg/Kconfig.board b/boards/boards_legacy/arm/nucleo_l476rg/Kconfig.board
deleted file mode 100644
index b83025518a28a2..00000000000000
--- a/boards/boards_legacy/arm/nucleo_l476rg/Kconfig.board
+++ /dev/null
@@ -1,9 +0,0 @@
-# STM32L476RG Nucleo board configuration
-
-# Copyright (c) 2016 Open-RnD Sp. z o.o.
-# Copyright (c) 2016 BayLibre, SAS
-# SPDX-License-Identifier: Apache-2.0
-
-config BOARD_NUCLEO_L476RG
-	bool "Nucleo L476RG Development Board"
-	depends on SOC_STM32L476XX
diff --git a/boards/boards_legacy/arm/nucleo_l4a6zg/Kconfig.board b/boards/boards_legacy/arm/nucleo_l4a6zg/Kconfig.board
deleted file mode 100644
index ad15c2540fd7eb..00000000000000
--- a/boards/boards_legacy/arm/nucleo_l4a6zg/Kconfig.board
+++ /dev/null
@@ -1,8 +0,0 @@
-# STM32L4A6ZG Nucleo board configuration
-
-# Copyright (c) 2022 Tomislav Milkovic
-# SPDX-License-Identifier: Apache-2.0
-
-config BOARD_NUCLEO_L4A6ZG
-	bool "Nucleo L4A6ZG Development Board"
-	depends on SOC_STM32L4A6XX
diff --git a/boards/boards_legacy/arm/nucleo_l4r5zi/Kconfig.board b/boards/boards_legacy/arm/nucleo_l4r5zi/Kconfig.board
deleted file mode 100644
index aebd712289bfa9..00000000000000
--- a/boards/boards_legacy/arm/nucleo_l4r5zi/Kconfig.board
+++ /dev/null
@@ -1,8 +0,0 @@
-# STM32L4R5ZI Nucleo board configuration
-
-# Copyright (c) 2018 Pushpal Sidhu
-# SPDX-License-Identifier: Apache-2.0
-
-config BOARD_NUCLEO_L4R5ZI
-	bool "Nucleo L4R5ZI Development Board"
-	depends on SOC_STM32L4R5XX
diff --git a/boards/boards_legacy/arm/pandora_stm32l475/Kconfig.board b/boards/boards_legacy/arm/pandora_stm32l475/Kconfig.board
deleted file mode 100644
index 89ba1c54b98971..00000000000000
--- a/boards/boards_legacy/arm/pandora_stm32l475/Kconfig.board
+++ /dev/null
@@ -1,8 +0,0 @@
-# STM32L475 Pandora board configuration
-
-# Copyright (c) 2023 Tisilicon
-# SPDX-License-Identifier: Apache-2.0
-
-config BOARD_PANDORA_STM32L475
-	bool "STM32L475 Pandora Development Board"
-	depends on SOC_STM32L475XX
diff --git a/boards/boards_legacy/arm/pandora_stm32l475/Kconfig.defconfig b/boards/boards_legacy/arm/pandora_stm32l475/Kconfig.defconfig
deleted file mode 100644
index 2d0f4e8c456ff6..00000000000000
--- a/boards/boards_legacy/arm/pandora_stm32l475/Kconfig.defconfig
+++ /dev/null
@@ -1,11 +0,0 @@
-# STM32L475 Pandora board configuration
-
-# Copyright (c) 2023 Tisilicon
-# SPDX-License-Identifier: Apache-2.0
-
-if BOARD_PANDORA_STM32L475
-
-config BOARD
-	default "pandora_stm32l475"
-
-endif # BOARD_PANDORA_STM32L475
diff --git a/boards/boards_legacy/arm/stm32l476g_disco/Kconfig.board b/boards/boards_legacy/arm/stm32l476g_disco/Kconfig.board
deleted file mode 100644
index 2aa9ec78b19306..00000000000000
--- a/boards/boards_legacy/arm/stm32l476g_disco/Kconfig.board
+++ /dev/null
@@ -1,8 +0,0 @@
-# STM32L476G Discovery board configuration
-
-# Copyright (c) 2017 Arthur Sfez
-# SPDX-License-Identifier: Apache-2.0
-
-config BOARD_STM32L476G_DISCO
-	bool "STM32L476G Discovery Development Board"
-	depends on SOC_STM32L476XX
diff --git a/boards/boards_legacy/arm/stm32l476g_disco/Kconfig.defconfig b/boards/boards_legacy/arm/stm32l476g_disco/Kconfig.defconfig
deleted file mode 100644
index 77e423642a3d58..00000000000000
--- a/boards/boards_legacy/arm/stm32l476g_disco/Kconfig.defconfig
+++ /dev/null
@@ -1,11 +0,0 @@
-# STM32L476G DISCOVERY board configuration
-
-# Copyright (c) 2017 Arthur Sfez
-# SPDX-License-Identifier: Apache-2.0
-
-if BOARD_STM32L476G_DISCO
-
-config BOARD
-	default "stm32l476g_disco"
-
-endif # BOARD_STM32L476G_DISCO
diff --git a/boards/boards_legacy/arm/stm32l496g_disco/Kconfig.board b/boards/boards_legacy/arm/stm32l496g_disco/Kconfig.board
deleted file mode 100644
index 4d2e23204a81a5..00000000000000
--- a/boards/boards_legacy/arm/stm32l496g_disco/Kconfig.board
+++ /dev/null
@@ -1,10 +0,0 @@
-# STM32L496G Discovery board configuration
-
-# Copyright (c) 2016 Open-RnD Sp. z o.o.
-# Copyright (c) 2016 BayLibre, SAS
-# Copyright (c) 2019 Centaur Analytics, Inc
-# SPDX-License-Identifier: Apache-2.0
-
-config BOARD_STM32L496G_DISCO
-	bool "STM32L496G Discovery Development Board"
-	depends on SOC_STM32L496XX
diff --git a/boards/boards_legacy/arm/stm32l4r9i_disco/Kconfig.board b/boards/boards_legacy/arm/stm32l4r9i_disco/Kconfig.board
deleted file mode 100644
index 57da0f65fdfa8c..00000000000000
--- a/boards/boards_legacy/arm/stm32l4r9i_disco/Kconfig.board
+++ /dev/null
@@ -1,8 +0,0 @@
-# STM32L4R9I Discovery board configuration
-
-# Copyright (c) 2023 STMicroelectronics
-# SPDX-License-Identifier: Apache-2.0
-
-config BOARD_STM32L4R9I_DISCO
-	bool "STM32L4R9I Discovery Development Board"
-	depends on SOC_STM32L4R9XX
diff --git a/boards/boards_legacy/arm/stm32l4r9i_disco/Kconfig.defconfig b/boards/boards_legacy/arm/stm32l4r9i_disco/Kconfig.defconfig
deleted file mode 100644
index 82eafa62744388..00000000000000
--- a/boards/boards_legacy/arm/stm32l4r9i_disco/Kconfig.defconfig
+++ /dev/null
@@ -1,11 +0,0 @@
-# STM32L4R9I Discovery board configuration
-
-# Copyright (c) 2023 STMicroelectronics
-# SPDX-License-Identifier: Apache-2.0
-
-if BOARD_STM32L4R9I_DISCO
-
-config BOARD
-	default "stm32l4r9i_disco"
-
-endif # BOARD_STM32L4R9I_DISCO
diff --git a/boards/boards_legacy/arm/swan_r5/Kconfig.board b/boards/boards_legacy/arm/swan_r5/Kconfig.board
deleted file mode 100644
index f1f15cb8bd72ab..00000000000000
--- a/boards/boards_legacy/arm/swan_r5/Kconfig.board
+++ /dev/null
@@ -1,8 +0,0 @@
-# Blues Wireless Swan board configuration
-
-# Copyright (c) 2022 Blues Inc.
-# SPDX-License-Identifier: Apache-2.0
-
-config BOARD_SWAN_R5
-	bool "Blues Wireless Swan Development Board"
-	depends on SOC_STM32L4R5XX
diff --git a/boards/st/b_l4s5i_iot01a/Kconfig.b_l4s5i_iot01a b/boards/st/b_l4s5i_iot01a/Kconfig.b_l4s5i_iot01a
new file mode 100644
index 00000000000000..e4c8a21a27aee0
--- /dev/null
+++ b/boards/st/b_l4s5i_iot01a/Kconfig.b_l4s5i_iot01a
@@ -0,0 +1,5 @@
+# Copyright (c) 2020 STMicroelectronics
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_B_L4S5I_IOT01A
+	select SOC_STM32L4S5XX
diff --git a/boards/boards_legacy/arm/b_l4s5i_iot01a/Kconfig.defconfig b/boards/st/b_l4s5i_iot01a/Kconfig.defconfig
similarity index 94%
rename from boards/boards_legacy/arm/b_l4s5i_iot01a/Kconfig.defconfig
rename to boards/st/b_l4s5i_iot01a/Kconfig.defconfig
index 059f36907a28c5..36b722dbf38199 100644
--- a/boards/boards_legacy/arm/b_l4s5i_iot01a/Kconfig.defconfig
+++ b/boards/st/b_l4s5i_iot01a/Kconfig.defconfig
@@ -5,9 +5,6 @@
 
 if BOARD_B_L4S5I_IOT01A
 
-config BOARD
-	default "b_l4s5i_iot01a"
-
 config SPI_STM32_INTERRUPT
 	default y
 	depends on SPI
diff --git a/boards/boards_legacy/arm/b_l4s5i_iot01a/arduino_r3_connector.dtsi b/boards/st/b_l4s5i_iot01a/arduino_r3_connector.dtsi
similarity index 100%
rename from boards/boards_legacy/arm/b_l4s5i_iot01a/arduino_r3_connector.dtsi
rename to boards/st/b_l4s5i_iot01a/arduino_r3_connector.dtsi
diff --git a/boards/boards_legacy/arm/b_l4s5i_iot01a/b_l4s5i_iot01a.dts b/boards/st/b_l4s5i_iot01a/b_l4s5i_iot01a.dts
similarity index 100%
rename from boards/boards_legacy/arm/b_l4s5i_iot01a/b_l4s5i_iot01a.dts
rename to boards/st/b_l4s5i_iot01a/b_l4s5i_iot01a.dts
diff --git a/boards/boards_legacy/arm/b_l4s5i_iot01a/b_l4s5i_iot01a.yaml b/boards/st/b_l4s5i_iot01a/b_l4s5i_iot01a.yaml
similarity index 100%
rename from boards/boards_legacy/arm/b_l4s5i_iot01a/b_l4s5i_iot01a.yaml
rename to boards/st/b_l4s5i_iot01a/b_l4s5i_iot01a.yaml
diff --git a/boards/boards_legacy/arm/b_l4s5i_iot01a/b_l4s5i_iot01a_defconfig b/boards/st/b_l4s5i_iot01a/b_l4s5i_iot01a_defconfig
similarity index 81%
rename from boards/boards_legacy/arm/b_l4s5i_iot01a/b_l4s5i_iot01a_defconfig
rename to boards/st/b_l4s5i_iot01a/b_l4s5i_iot01a_defconfig
index 981dd5f1670d9d..9e3dfce576e064 100644
--- a/boards/boards_legacy/arm/b_l4s5i_iot01a/b_l4s5i_iot01a_defconfig
+++ b/boards/st/b_l4s5i_iot01a/b_l4s5i_iot01a_defconfig
@@ -1,8 +1,5 @@
 # SPDX-License-Identifier: Apache-2.0
 
-CONFIG_SOC_SERIES_STM32L4X=y
-CONFIG_SOC_STM32L4S5XX=y
-
 # enable uart driver
 CONFIG_SERIAL=y
 
diff --git a/boards/boards_legacy/arm/b_l4s5i_iot01a/board.cmake b/boards/st/b_l4s5i_iot01a/board.cmake
similarity index 100%
rename from boards/boards_legacy/arm/b_l4s5i_iot01a/board.cmake
rename to boards/st/b_l4s5i_iot01a/board.cmake
diff --git a/boards/st/b_l4s5i_iot01a/board.yml b/boards/st/b_l4s5i_iot01a/board.yml
new file mode 100644
index 00000000000000..e41cb4b1002397
--- /dev/null
+++ b/boards/st/b_l4s5i_iot01a/board.yml
@@ -0,0 +1,5 @@
+board:
+  name: b_l4s5i_iot01a
+  vendor: st
+  socs:
+    - name: stm32l4s5xx
diff --git a/boards/boards_legacy/arm/b_l4s5i_iot01a/doc/img/b-l4s5i_iot01a.jpg b/boards/st/b_l4s5i_iot01a/doc/img/b-l4s5i_iot01a.jpg
similarity index 100%
rename from boards/boards_legacy/arm/b_l4s5i_iot01a/doc/img/b-l4s5i_iot01a.jpg
rename to boards/st/b_l4s5i_iot01a/doc/img/b-l4s5i_iot01a.jpg
diff --git a/boards/boards_legacy/arm/b_l4s5i_iot01a/doc/index.rst b/boards/st/b_l4s5i_iot01a/doc/index.rst
similarity index 99%
rename from boards/boards_legacy/arm/b_l4s5i_iot01a/doc/index.rst
rename to boards/st/b_l4s5i_iot01a/doc/index.rst
index d5b11c8b30b3ab..17455c772dd0a1 100644
--- a/boards/boards_legacy/arm/b_l4s5i_iot01a/doc/index.rst
+++ b/boards/st/b_l4s5i_iot01a/doc/index.rst
@@ -135,7 +135,7 @@ The Zephyr b_l4s5i_iot01a board configuration supports the following hardware fe
 
 The default configuration can be found in the defconfig file:
 
-	``boards/arm/b_l4s5i_iot01a/b_l4s5i_iot01a_defconfig``
+	:zephyr_file:`boards/st/b_l4s5i_iot01a/b_l4s5i_iot01a_defconfig`
 
 
 Connections and IOs
diff --git a/boards/boards_legacy/arm/b_l4s5i_iot01a/support/openocd.cfg b/boards/st/b_l4s5i_iot01a/support/openocd.cfg
similarity index 100%
rename from boards/boards_legacy/arm/b_l4s5i_iot01a/support/openocd.cfg
rename to boards/st/b_l4s5i_iot01a/support/openocd.cfg
diff --git a/boards/boards_legacy/arm/disco_l475_iot1/Kconfig.defconfig b/boards/st/disco_l475_iot1/Kconfig.defconfig
similarity index 94%
rename from boards/boards_legacy/arm/disco_l475_iot1/Kconfig.defconfig
rename to boards/st/disco_l475_iot1/Kconfig.defconfig
index 3a53147decf641..5679d2caff840d 100644
--- a/boards/boards_legacy/arm/disco_l475_iot1/Kconfig.defconfig
+++ b/boards/st/disco_l475_iot1/Kconfig.defconfig
@@ -5,9 +5,6 @@
 
 if BOARD_DISCO_L475_IOT1
 
-config BOARD
-	default "disco_l475_iot1"
-
 config SPI_STM32_INTERRUPT
 	default y
 	depends on SPI
diff --git a/boards/st/disco_l475_iot1/Kconfig.disco_l475_iot1 b/boards/st/disco_l475_iot1/Kconfig.disco_l475_iot1
new file mode 100644
index 00000000000000..ee5352391883ac
--- /dev/null
+++ b/boards/st/disco_l475_iot1/Kconfig.disco_l475_iot1
@@ -0,0 +1,5 @@
+# Copyright (c) 2017 Linaro Limited
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_DISCO_L475_IOT1
+	select SOC_STM32L475XX
diff --git a/boards/boards_legacy/arm/disco_l475_iot1/arduino_r3_connector.dtsi b/boards/st/disco_l475_iot1/arduino_r3_connector.dtsi
similarity index 100%
rename from boards/boards_legacy/arm/disco_l475_iot1/arduino_r3_connector.dtsi
rename to boards/st/disco_l475_iot1/arduino_r3_connector.dtsi
diff --git a/boards/boards_legacy/arm/disco_l475_iot1/board.cmake b/boards/st/disco_l475_iot1/board.cmake
similarity index 100%
rename from boards/boards_legacy/arm/disco_l475_iot1/board.cmake
rename to boards/st/disco_l475_iot1/board.cmake
diff --git a/boards/st/disco_l475_iot1/board.yml b/boards/st/disco_l475_iot1/board.yml
new file mode 100644
index 00000000000000..c11f22591a5690
--- /dev/null
+++ b/boards/st/disco_l475_iot1/board.yml
@@ -0,0 +1,5 @@
+board:
+  name: disco_l475_iot1
+  vendor: st
+  socs:
+    - name: stm32l475xx
diff --git a/boards/boards_legacy/arm/disco_l475_iot1/disco_l475_iot1.dts b/boards/st/disco_l475_iot1/disco_l475_iot1.dts
similarity index 100%
rename from boards/boards_legacy/arm/disco_l475_iot1/disco_l475_iot1.dts
rename to boards/st/disco_l475_iot1/disco_l475_iot1.dts
diff --git a/boards/boards_legacy/arm/disco_l475_iot1/disco_l475_iot1.yaml b/boards/st/disco_l475_iot1/disco_l475_iot1.yaml
similarity index 100%
rename from boards/boards_legacy/arm/disco_l475_iot1/disco_l475_iot1.yaml
rename to boards/st/disco_l475_iot1/disco_l475_iot1.yaml
diff --git a/boards/boards_legacy/arm/disco_l475_iot1/disco_l475_iot1_defconfig b/boards/st/disco_l475_iot1/disco_l475_iot1_defconfig
similarity index 80%
rename from boards/boards_legacy/arm/disco_l475_iot1/disco_l475_iot1_defconfig
rename to boards/st/disco_l475_iot1/disco_l475_iot1_defconfig
index a25b1eff6458ed..2ff706148f2956 100644
--- a/boards/boards_legacy/arm/disco_l475_iot1/disco_l475_iot1_defconfig
+++ b/boards/st/disco_l475_iot1/disco_l475_iot1_defconfig
@@ -1,9 +1,5 @@
 # SPDX-License-Identifier: Apache-2.0
 
-CONFIG_BOARD_DISCO_L475_IOT1=y
-CONFIG_SOC_SERIES_STM32L4X=y
-CONFIG_SOC_STM32L475XX=y
-
 # enable uart driver
 CONFIG_SERIAL=y
 CONFIG_UART_INTERRUPT_DRIVEN=y
diff --git a/boards/boards_legacy/arm/disco_l475_iot1/doc/img/disco_l475_iot1.jpg b/boards/st/disco_l475_iot1/doc/img/disco_l475_iot1.jpg
similarity index 100%
rename from boards/boards_legacy/arm/disco_l475_iot1/doc/img/disco_l475_iot1.jpg
rename to boards/st/disco_l475_iot1/doc/img/disco_l475_iot1.jpg
diff --git a/boards/boards_legacy/arm/disco_l475_iot1/doc/index.rst b/boards/st/disco_l475_iot1/doc/index.rst
similarity index 99%
rename from boards/boards_legacy/arm/disco_l475_iot1/doc/index.rst
rename to boards/st/disco_l475_iot1/doc/index.rst
index 906729fcf8e411..dc49d4fcb2d68a 100644
--- a/boards/boards_legacy/arm/disco_l475_iot1/doc/index.rst
+++ b/boards/st/disco_l475_iot1/doc/index.rst
@@ -136,7 +136,7 @@ Other hardware features are not yet supported on this Zephyr port.
 
 The default configuration can be found in the defconfig file:
 
-	``boards/arm/disco_l475_iot1/disco_l475_iot1_defconfig``
+	:zephyr_file:`boards/st/disco_l475_iot1/disco_l475_iot1_defconfig`
 
 
 Connections and IOs
diff --git a/boards/boards_legacy/arm/disco_l475_iot1/support/openocd.cfg b/boards/st/disco_l475_iot1/support/openocd.cfg
similarity index 100%
rename from boards/boards_legacy/arm/disco_l475_iot1/support/openocd.cfg
rename to boards/st/disco_l475_iot1/support/openocd.cfg
diff --git a/boards/boards_legacy/arm/nucleo_l412rb_p/Kconfig.defconfig b/boards/st/nucleo_l412rb_p/Kconfig.defconfig
similarity index 85%
rename from boards/boards_legacy/arm/nucleo_l412rb_p/Kconfig.defconfig
rename to boards/st/nucleo_l412rb_p/Kconfig.defconfig
index 210607bd31d80b..1ea0e9a194a12e 100644
--- a/boards/boards_legacy/arm/nucleo_l412rb_p/Kconfig.defconfig
+++ b/boards/st/nucleo_l412rb_p/Kconfig.defconfig
@@ -5,9 +5,6 @@
 
 if BOARD_NUCLEO_L412RB_P
 
-config BOARD
-	default "nucleo_l412rb_p"
-
 config SPI_STM32_INTERRUPT
 	default y
 	depends on SPI
diff --git a/boards/st/nucleo_l412rb_p/Kconfig.nucleo_l412rb_p b/boards/st/nucleo_l412rb_p/Kconfig.nucleo_l412rb_p
new file mode 100644
index 00000000000000..9faaea408546a4
--- /dev/null
+++ b/boards/st/nucleo_l412rb_p/Kconfig.nucleo_l412rb_p
@@ -0,0 +1,5 @@
+# Copyright (c) 2021 Guðni Már Gilbert
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_NUCLEO_L412RB_P
+	select SOC_STM32L412XX
diff --git a/boards/boards_legacy/arm/nucleo_l412rb_p/arduino_r3_connector.dtsi b/boards/st/nucleo_l412rb_p/arduino_r3_connector.dtsi
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l412rb_p/arduino_r3_connector.dtsi
rename to boards/st/nucleo_l412rb_p/arduino_r3_connector.dtsi
diff --git a/boards/boards_legacy/arm/nucleo_l412rb_p/board.cmake b/boards/st/nucleo_l412rb_p/board.cmake
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l412rb_p/board.cmake
rename to boards/st/nucleo_l412rb_p/board.cmake
diff --git a/boards/st/nucleo_l412rb_p/board.yml b/boards/st/nucleo_l412rb_p/board.yml
new file mode 100644
index 00000000000000..92ab56d2df399f
--- /dev/null
+++ b/boards/st/nucleo_l412rb_p/board.yml
@@ -0,0 +1,5 @@
+board:
+  name: nucleo_l412rb_p
+  vendor: st
+  socs:
+    - name: stm32l412xx
diff --git a/boards/boards_legacy/arm/nucleo_l412rb_p/doc/img/nucleo_l412rb_p.jpg b/boards/st/nucleo_l412rb_p/doc/img/nucleo_l412rb_p.jpg
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l412rb_p/doc/img/nucleo_l412rb_p.jpg
rename to boards/st/nucleo_l412rb_p/doc/img/nucleo_l412rb_p.jpg
diff --git a/boards/boards_legacy/arm/nucleo_l412rb_p/doc/img/nucleo_l412rb_p_pinout.jpg b/boards/st/nucleo_l412rb_p/doc/img/nucleo_l412rb_p_pinout.jpg
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l412rb_p/doc/img/nucleo_l412rb_p_pinout.jpg
rename to boards/st/nucleo_l412rb_p/doc/img/nucleo_l412rb_p_pinout.jpg
diff --git a/boards/boards_legacy/arm/nucleo_l412rb_p/doc/index.rst b/boards/st/nucleo_l412rb_p/doc/index.rst
similarity index 99%
rename from boards/boards_legacy/arm/nucleo_l412rb_p/doc/index.rst
rename to boards/st/nucleo_l412rb_p/doc/index.rst
index 3485d01cba1d6f..b423f06c17489c 100644
--- a/boards/boards_legacy/arm/nucleo_l412rb_p/doc/index.rst
+++ b/boards/st/nucleo_l412rb_p/doc/index.rst
@@ -161,7 +161,7 @@ The Zephyr ``nucleo_l412rb_p`` board configuration supports the following hardwa
 Other hardware features are not yet supported on this Zephyr port.
 
 The default configuration can be found in the defconfig file:
-``boards/arm/nucleo_l412rb_p/nucleo_l412rb_p_defconfig``
+:zephyr_file:`boards/st/nucleo_l412rb_p/nucleo_l412rb_p_defconfig`
 
 
 Connections and IOs
diff --git a/boards/boards_legacy/arm/nucleo_l412rb_p/nucleo_l412rb_p.dts b/boards/st/nucleo_l412rb_p/nucleo_l412rb_p.dts
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l412rb_p/nucleo_l412rb_p.dts
rename to boards/st/nucleo_l412rb_p/nucleo_l412rb_p.dts
diff --git a/boards/boards_legacy/arm/nucleo_l412rb_p/nucleo_l412rb_p.yaml b/boards/st/nucleo_l412rb_p/nucleo_l412rb_p.yaml
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l412rb_p/nucleo_l412rb_p.yaml
rename to boards/st/nucleo_l412rb_p/nucleo_l412rb_p.yaml
diff --git a/boards/boards_legacy/arm/nucleo_l412rb_p/nucleo_l412rb_p_defconfig b/boards/st/nucleo_l412rb_p/nucleo_l412rb_p_defconfig
similarity index 85%
rename from boards/boards_legacy/arm/nucleo_l412rb_p/nucleo_l412rb_p_defconfig
rename to boards/st/nucleo_l412rb_p/nucleo_l412rb_p_defconfig
index a3541daa6f6ab7..349e958591e43c 100644
--- a/boards/boards_legacy/arm/nucleo_l412rb_p/nucleo_l412rb_p_defconfig
+++ b/boards/st/nucleo_l412rb_p/nucleo_l412rb_p_defconfig
@@ -1,8 +1,5 @@
 # SPDX-License-Identifier: Apache-2.0
 
-CONFIG_SOC_SERIES_STM32L4X=y
-CONFIG_SOC_STM32L412XX=y
-
 # Enable MPU
 CONFIG_ARM_MPU=y
 
diff --git a/boards/boards_legacy/arm/nucleo_l412rb_p/support/openocd.cfg b/boards/st/nucleo_l412rb_p/support/openocd.cfg
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l412rb_p/support/openocd.cfg
rename to boards/st/nucleo_l412rb_p/support/openocd.cfg
diff --git a/boards/boards_legacy/arm/nucleo_l432kc/Kconfig.defconfig b/boards/st/nucleo_l432kc/Kconfig.defconfig
similarity index 87%
rename from boards/boards_legacy/arm/nucleo_l432kc/Kconfig.defconfig
rename to boards/st/nucleo_l432kc/Kconfig.defconfig
index d76ef2633af2c3..2820946d23a7ed 100644
--- a/boards/boards_legacy/arm/nucleo_l432kc/Kconfig.defconfig
+++ b/boards/st/nucleo_l432kc/Kconfig.defconfig
@@ -6,9 +6,6 @@
 
 if BOARD_NUCLEO_L432KC
 
-config BOARD
-	default "nucleo_l432kc"
-
 config SPI_STM32_INTERRUPT
 	default y
 	depends on SPI
diff --git a/boards/st/nucleo_l432kc/Kconfig.nucleo_l432kc b/boards/st/nucleo_l432kc/Kconfig.nucleo_l432kc
new file mode 100644
index 00000000000000..800f96f6c013e6
--- /dev/null
+++ b/boards/st/nucleo_l432kc/Kconfig.nucleo_l432kc
@@ -0,0 +1,5 @@
+# Copyright (c) 2016 BayLibre, SAS
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_NUCLEO_L432KC
+	select SOC_STM32L432XX
diff --git a/boards/boards_legacy/arm/nucleo_l432kc/board.cmake b/boards/st/nucleo_l432kc/board.cmake
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l432kc/board.cmake
rename to boards/st/nucleo_l432kc/board.cmake
diff --git a/boards/st/nucleo_l432kc/board.yml b/boards/st/nucleo_l432kc/board.yml
new file mode 100644
index 00000000000000..25ccfc0ddf9c4f
--- /dev/null
+++ b/boards/st/nucleo_l432kc/board.yml
@@ -0,0 +1,5 @@
+board:
+  name: nucleo_l432kc
+  vendor: st
+  socs:
+    - name: stm32l432xx
diff --git a/boards/boards_legacy/arm/nucleo_l432kc/doc/img/nucleo_l432kc.jpg b/boards/st/nucleo_l432kc/doc/img/nucleo_l432kc.jpg
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l432kc/doc/img/nucleo_l432kc.jpg
rename to boards/st/nucleo_l432kc/doc/img/nucleo_l432kc.jpg
diff --git a/boards/boards_legacy/arm/nucleo_l432kc/doc/img/nucleo_l432kc_arduino_nano.jpg b/boards/st/nucleo_l432kc/doc/img/nucleo_l432kc_arduino_nano.jpg
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l432kc/doc/img/nucleo_l432kc_arduino_nano.jpg
rename to boards/st/nucleo_l432kc/doc/img/nucleo_l432kc_arduino_nano.jpg
diff --git a/boards/boards_legacy/arm/nucleo_l432kc/doc/index.rst b/boards/st/nucleo_l432kc/doc/index.rst
similarity index 99%
rename from boards/boards_legacy/arm/nucleo_l432kc/doc/index.rst
rename to boards/st/nucleo_l432kc/doc/index.rst
index b054c472f22603..ddbfaec6a805ee 100644
--- a/boards/boards_legacy/arm/nucleo_l432kc/doc/index.rst
+++ b/boards/st/nucleo_l432kc/doc/index.rst
@@ -122,7 +122,7 @@ The Zephyr nucleo_l432kc board configuration supports the following hardware fea
 Other hardware features are not yet supported on this Zephyr port.
 
 The default configuration can be found in the defconfig file:
-``boards/arm/nucleo_l432kc/nucleo_l432kc_defconfig``
+:zephyr_file:`boards/st/nucleo_l432kc/nucleo_l432kc_defconfig`
 
 
 Connections and IOs
diff --git a/boards/boards_legacy/arm/nucleo_l432kc/nucleo_l432kc.dts b/boards/st/nucleo_l432kc/nucleo_l432kc.dts
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l432kc/nucleo_l432kc.dts
rename to boards/st/nucleo_l432kc/nucleo_l432kc.dts
diff --git a/boards/boards_legacy/arm/nucleo_l432kc/nucleo_l432kc.yaml b/boards/st/nucleo_l432kc/nucleo_l432kc.yaml
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l432kc/nucleo_l432kc.yaml
rename to boards/st/nucleo_l432kc/nucleo_l432kc.yaml
diff --git a/boards/boards_legacy/arm/nucleo_l432kc/nucleo_l432kc_defconfig b/boards/st/nucleo_l432kc/nucleo_l432kc_defconfig
similarity index 85%
rename from boards/boards_legacy/arm/nucleo_l432kc/nucleo_l432kc_defconfig
rename to boards/st/nucleo_l432kc/nucleo_l432kc_defconfig
index d4bf42213f4b2f..82ee7285d52d8a 100644
--- a/boards/boards_legacy/arm/nucleo_l432kc/nucleo_l432kc_defconfig
+++ b/boards/st/nucleo_l432kc/nucleo_l432kc_defconfig
@@ -1,8 +1,5 @@
 # SPDX-License-Identifier: Apache-2.0
 
-CONFIG_SOC_SERIES_STM32L4X=y
-CONFIG_SOC_STM32L432XX=y
-
 # Enable MPU
 CONFIG_ARM_MPU=y
 
diff --git a/boards/boards_legacy/arm/nucleo_l432kc/support/openocd.cfg b/boards/st/nucleo_l432kc/support/openocd.cfg
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l432kc/support/openocd.cfg
rename to boards/st/nucleo_l432kc/support/openocd.cfg
diff --git a/boards/boards_legacy/arm/nucleo_l433rc_p/Kconfig.defconfig b/boards/st/nucleo_l433rc_p/Kconfig.defconfig
similarity index 84%
rename from boards/boards_legacy/arm/nucleo_l433rc_p/Kconfig.defconfig
rename to boards/st/nucleo_l433rc_p/Kconfig.defconfig
index 62136895033403..5db4cd8f6d3d27 100644
--- a/boards/boards_legacy/arm/nucleo_l433rc_p/Kconfig.defconfig
+++ b/boards/st/nucleo_l433rc_p/Kconfig.defconfig
@@ -5,9 +5,6 @@
 
 if BOARD_NUCLEO_L433RC_P
 
-config BOARD
-	default "nucleo_l433rc_p"
-
 config SPI_STM32_INTERRUPT
 	default y
 	depends on SPI
diff --git a/boards/st/nucleo_l433rc_p/Kconfig.nucleo_l433rc_p b/boards/st/nucleo_l433rc_p/Kconfig.nucleo_l433rc_p
new file mode 100644
index 00000000000000..e2e57e6890b524
--- /dev/null
+++ b/boards/st/nucleo_l433rc_p/Kconfig.nucleo_l433rc_p
@@ -0,0 +1,5 @@
+# Copyright (c) 2021 Matija Tudan
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_NUCLEO_L433RC_P
+	select SOC_STM32L433XX
diff --git a/boards/boards_legacy/arm/nucleo_l433rc_p/arduino_r3_connector.dtsi b/boards/st/nucleo_l433rc_p/arduino_r3_connector.dtsi
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l433rc_p/arduino_r3_connector.dtsi
rename to boards/st/nucleo_l433rc_p/arduino_r3_connector.dtsi
diff --git a/boards/boards_legacy/arm/nucleo_l433rc_p/board.cmake b/boards/st/nucleo_l433rc_p/board.cmake
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l433rc_p/board.cmake
rename to boards/st/nucleo_l433rc_p/board.cmake
diff --git a/boards/st/nucleo_l433rc_p/board.yml b/boards/st/nucleo_l433rc_p/board.yml
new file mode 100644
index 00000000000000..03c1f3c6f6fb6d
--- /dev/null
+++ b/boards/st/nucleo_l433rc_p/board.yml
@@ -0,0 +1,5 @@
+board:
+  name: nucleo_l433rc_p
+  vendor: st
+  socs:
+    - name: stm32l433xx
diff --git a/boards/boards_legacy/arm/nucleo_l433rc_p/doc/img/nucleo_l433rc_p.jpg b/boards/st/nucleo_l433rc_p/doc/img/nucleo_l433rc_p.jpg
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l433rc_p/doc/img/nucleo_l433rc_p.jpg
rename to boards/st/nucleo_l433rc_p/doc/img/nucleo_l433rc_p.jpg
diff --git a/boards/boards_legacy/arm/nucleo_l433rc_p/doc/img/nucleo_l433rc_p_pinout.jpg b/boards/st/nucleo_l433rc_p/doc/img/nucleo_l433rc_p_pinout.jpg
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l433rc_p/doc/img/nucleo_l433rc_p_pinout.jpg
rename to boards/st/nucleo_l433rc_p/doc/img/nucleo_l433rc_p_pinout.jpg
diff --git a/boards/boards_legacy/arm/nucleo_l433rc_p/doc/index.rst b/boards/st/nucleo_l433rc_p/doc/index.rst
similarity index 99%
rename from boards/boards_legacy/arm/nucleo_l433rc_p/doc/index.rst
rename to boards/st/nucleo_l433rc_p/doc/index.rst
index 6e86a44cee0ccf..8981c68b2361ff 100644
--- a/boards/boards_legacy/arm/nucleo_l433rc_p/doc/index.rst
+++ b/boards/st/nucleo_l433rc_p/doc/index.rst
@@ -125,7 +125,7 @@ The Zephyr nucleo_l433rc_p board configuration supports the following hardware f
 Other hardware features are not yet supported on this Zephyr port.
 
 The default configuration can be found in the defconfig file:
-``boards/arm/nucleo_l433rc_p/nucleo_l433rc_p_defconfig``
+:zephyr_file:`boards/st/nucleo_l433rc_p/nucleo_l433rc_p_defconfig`
 
 
 Connections and IOs
diff --git a/boards/boards_legacy/arm/nucleo_l433rc_p/nucleo_l433rc_p.dts b/boards/st/nucleo_l433rc_p/nucleo_l433rc_p.dts
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l433rc_p/nucleo_l433rc_p.dts
rename to boards/st/nucleo_l433rc_p/nucleo_l433rc_p.dts
diff --git a/boards/boards_legacy/arm/nucleo_l433rc_p/nucleo_l433rc_p.yaml b/boards/st/nucleo_l433rc_p/nucleo_l433rc_p.yaml
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l433rc_p/nucleo_l433rc_p.yaml
rename to boards/st/nucleo_l433rc_p/nucleo_l433rc_p.yaml
diff --git a/boards/boards_legacy/arm/nucleo_l433rc_p/nucleo_l433rc_p_defconfig b/boards/st/nucleo_l433rc_p/nucleo_l433rc_p_defconfig
similarity index 85%
rename from boards/boards_legacy/arm/nucleo_l433rc_p/nucleo_l433rc_p_defconfig
rename to boards/st/nucleo_l433rc_p/nucleo_l433rc_p_defconfig
index 72a116e3fec1e4..82ee7285d52d8a 100644
--- a/boards/boards_legacy/arm/nucleo_l433rc_p/nucleo_l433rc_p_defconfig
+++ b/boards/st/nucleo_l433rc_p/nucleo_l433rc_p_defconfig
@@ -1,8 +1,5 @@
 # SPDX-License-Identifier: Apache-2.0
 
-CONFIG_SOC_SERIES_STM32L4X=y
-CONFIG_SOC_STM32L433XX=y
-
 # Enable MPU
 CONFIG_ARM_MPU=y
 
diff --git a/boards/boards_legacy/arm/nucleo_l433rc_p/support/openocd.cfg b/boards/st/nucleo_l433rc_p/support/openocd.cfg
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l433rc_p/support/openocd.cfg
rename to boards/st/nucleo_l433rc_p/support/openocd.cfg
diff --git a/boards/st/nucleo_l452re/Kconfig.defconfig b/boards/st/nucleo_l452re/Kconfig.defconfig
new file mode 100644
index 00000000000000..1758af6e18caab
--- /dev/null
+++ b/boards/st/nucleo_l452re/Kconfig.defconfig
@@ -0,0 +1,13 @@
+# STM32L452RE Nucleo board configuration
+#
+# Copyright (c) 2019 Libre Solar Technologies GmbH
+#
+# SPDX-License-Identifier: Apache-2.0
+
+if BOARD_NUCLEO_L452RE
+
+config SPI_STM32_INTERRUPT
+	default y
+	depends on SPI
+
+endif # BOARD_NUCLEO_L452RE
diff --git a/boards/st/nucleo_l452re/Kconfig.nucleo_l452re b/boards/st/nucleo_l452re/Kconfig.nucleo_l452re
new file mode 100644
index 00000000000000..08df2bfc05fef7
--- /dev/null
+++ b/boards/st/nucleo_l452re/Kconfig.nucleo_l452re
@@ -0,0 +1,5 @@
+# Copyright (c) 2019 Libre Solar Technologies GmbH
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_NUCLEO_L452RE
+	select SOC_STM32L452XX
diff --git a/boards/boards_legacy/arm/nucleo_l452re/arduino_r3_connector.dtsi b/boards/st/nucleo_l452re/arduino_r3_connector.dtsi
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l452re/arduino_r3_connector.dtsi
rename to boards/st/nucleo_l452re/arduino_r3_connector.dtsi
diff --git a/boards/boards_legacy/arm/nucleo_l452re/board.cmake b/boards/st/nucleo_l452re/board.cmake
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l452re/board.cmake
rename to boards/st/nucleo_l452re/board.cmake
diff --git a/boards/st/nucleo_l452re/board.yml b/boards/st/nucleo_l452re/board.yml
new file mode 100644
index 00000000000000..9bbf96304971ed
--- /dev/null
+++ b/boards/st/nucleo_l452re/board.yml
@@ -0,0 +1,7 @@
+board:
+  name: nucleo_l452re
+  vendor: st
+  socs:
+    - name: stm32l452xx
+      variants:
+        - name: p
diff --git a/boards/boards_legacy/arm/nucleo_l452re/doc/img/nucleo_l452re_p.jpg b/boards/st/nucleo_l452re/doc/img/nucleo_l452re_p.jpg
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l452re/doc/img/nucleo_l452re_p.jpg
rename to boards/st/nucleo_l452re/doc/img/nucleo_l452re_p.jpg
diff --git a/boards/boards_legacy/arm/nucleo_l452re/doc/img/nucleo_l452re_p_pinout.jpg b/boards/st/nucleo_l452re/doc/img/nucleo_l452re_p_pinout.jpg
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l452re/doc/img/nucleo_l452re_p_pinout.jpg
rename to boards/st/nucleo_l452re/doc/img/nucleo_l452re_p_pinout.jpg
diff --git a/boards/boards_legacy/arm/nucleo_l452re/doc/img/nucleo_l452re_pinout.jpg b/boards/st/nucleo_l452re/doc/img/nucleo_l452re_pinout.jpg
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l452re/doc/img/nucleo_l452re_pinout.jpg
rename to boards/st/nucleo_l452re/doc/img/nucleo_l452re_pinout.jpg
diff --git a/boards/boards_legacy/arm/nucleo_l452re/doc/index.rst b/boards/st/nucleo_l452re/doc/index.rst
similarity index 95%
rename from boards/boards_legacy/arm/nucleo_l452re/doc/index.rst
rename to boards/st/nucleo_l452re/doc/index.rst
index 4b68d032be1781..57839f931c5d2d 100644
--- a/boards/boards_legacy/arm/nucleo_l452re/doc/index.rst
+++ b/boards/st/nucleo_l452re/doc/index.rst
@@ -132,7 +132,10 @@ The Zephyr nucleo_l452re board configuration supports the following hardware fea
 Other hardware features are not yet supported on this Zephyr port.
 
 The default configuration can be found in the defconfig file:
-``boards/arm/nucleo_l452re/nucleo_l452re_defconfig``
+:zephyr_file:`boards/st/nucleo_l452re/nucleo_l452re_defconfig`
+
+And for Nucleo L452RE-P in this defconfig file:
+:zephyr_file:`boards/st/nucleo_l452re/nucleo_l452re_stm32l452xx_p_defconfig`
 
 
 Connections and IOs
@@ -218,6 +221,13 @@ Now build and flash an application. Here is an example for
    :board: nucleo_l452re
    :goals: build flash
 
+For Nucleo L452RE-P, use this command instead:
+
+.. zephyr-app-commands::
+   :zephyr-app: samples/hello_world
+   :board: nucleo_l452re/stm32l452xx/p
+   :goals: build flash
+
 You should see the following message on the console:
 
 .. code-block:: console
diff --git a/boards/boards_legacy/arm/nucleo_l452re/nucleo_l452re.dts b/boards/st/nucleo_l452re/nucleo_l452re.dts
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l452re/nucleo_l452re.dts
rename to boards/st/nucleo_l452re/nucleo_l452re.dts
diff --git a/boards/boards_legacy/arm/nucleo_l452re/nucleo_l452re.yaml b/boards/st/nucleo_l452re/nucleo_l452re.yaml
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l452re/nucleo_l452re.yaml
rename to boards/st/nucleo_l452re/nucleo_l452re.yaml
diff --git a/boards/boards_legacy/arm/nucleo_l452re/nucleo_l452re_common.dtsi b/boards/st/nucleo_l452re/nucleo_l452re_common.dtsi
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l452re/nucleo_l452re_common.dtsi
rename to boards/st/nucleo_l452re/nucleo_l452re_common.dtsi
diff --git a/boards/boards_legacy/arm/nucleo_l452re/nucleo_l452re_defconfig b/boards/st/nucleo_l452re/nucleo_l452re_defconfig
similarity index 85%
rename from boards/boards_legacy/arm/nucleo_l452re/nucleo_l452re_defconfig
rename to boards/st/nucleo_l452re/nucleo_l452re_defconfig
index 14b7ffdd20928b..94950b2862fcaa 100644
--- a/boards/boards_legacy/arm/nucleo_l452re/nucleo_l452re_defconfig
+++ b/boards/st/nucleo_l452re/nucleo_l452re_defconfig
@@ -1,8 +1,5 @@
 # SPDX-License-Identifier: Apache-2.0
 
-CONFIG_SOC_SERIES_STM32L4X=y
-CONFIG_SOC_STM32L452XX=y
-
 # enable uart driver
 CONFIG_SERIAL=y
 
diff --git a/boards/boards_legacy/arm/nucleo_l452re/nucleo_l452re_p.dts b/boards/st/nucleo_l452re/nucleo_l452re_stm32l452xx_p.dts
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l452re/nucleo_l452re_p.dts
rename to boards/st/nucleo_l452re/nucleo_l452re_stm32l452xx_p.dts
diff --git a/boards/boards_legacy/arm/nucleo_l452re/nucleo_l452re_p.yaml b/boards/st/nucleo_l452re/nucleo_l452re_stm32l452xx_p.yaml
similarity index 81%
rename from boards/boards_legacy/arm/nucleo_l452re/nucleo_l452re_p.yaml
rename to boards/st/nucleo_l452re/nucleo_l452re_stm32l452xx_p.yaml
index 7ca93a9c9bc43e..86e8a58034f761 100644
--- a/boards/boards_legacy/arm/nucleo_l452re/nucleo_l452re_p.yaml
+++ b/boards/st/nucleo_l452re/nucleo_l452re_stm32l452xx_p.yaml
@@ -1,4 +1,4 @@
-identifier: nucleo_l452re_p
+identifier: nucleo_l452re/stm32l452xx/p
 name: ST Nucleo L452RE-P
 type: mcu
 arch: arm
diff --git a/boards/boards_legacy/arm/nucleo_l452re/nucleo_l452re_p_defconfig b/boards/st/nucleo_l452re/nucleo_l452re_stm32l452xx_p_defconfig
similarity index 85%
rename from boards/boards_legacy/arm/nucleo_l452re/nucleo_l452re_p_defconfig
rename to boards/st/nucleo_l452re/nucleo_l452re_stm32l452xx_p_defconfig
index 14b7ffdd20928b..94950b2862fcaa 100644
--- a/boards/boards_legacy/arm/nucleo_l452re/nucleo_l452re_p_defconfig
+++ b/boards/st/nucleo_l452re/nucleo_l452re_stm32l452xx_p_defconfig
@@ -1,8 +1,5 @@
 # SPDX-License-Identifier: Apache-2.0
 
-CONFIG_SOC_SERIES_STM32L4X=y
-CONFIG_SOC_STM32L452XX=y
-
 # enable uart driver
 CONFIG_SERIAL=y
 
diff --git a/boards/boards_legacy/arm/nucleo_l452re/st_morpho_connector.dtsi b/boards/st/nucleo_l452re/st_morpho_connector.dtsi
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l452re/st_morpho_connector.dtsi
rename to boards/st/nucleo_l452re/st_morpho_connector.dtsi
diff --git a/boards/boards_legacy/arm/nucleo_l452re/support/openocd.cfg b/boards/st/nucleo_l452re/support/openocd.cfg
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l452re/support/openocd.cfg
rename to boards/st/nucleo_l452re/support/openocd.cfg
diff --git a/boards/boards_legacy/arm/nucleo_l476rg/Kconfig.defconfig b/boards/st/nucleo_l476rg/Kconfig.defconfig
similarity index 87%
rename from boards/boards_legacy/arm/nucleo_l476rg/Kconfig.defconfig
rename to boards/st/nucleo_l476rg/Kconfig.defconfig
index cbbef016161a43..276fdc47b58095 100644
--- a/boards/boards_legacy/arm/nucleo_l476rg/Kconfig.defconfig
+++ b/boards/st/nucleo_l476rg/Kconfig.defconfig
@@ -6,9 +6,6 @@
 
 if BOARD_NUCLEO_L476RG
 
-config BOARD
-	default "nucleo_l476rg"
-
 config SPI_STM32_INTERRUPT
 	default y
 	depends on SPI
diff --git a/boards/st/nucleo_l476rg/Kconfig.nucleo_l476rg b/boards/st/nucleo_l476rg/Kconfig.nucleo_l476rg
new file mode 100644
index 00000000000000..dd3608327d185e
--- /dev/null
+++ b/boards/st/nucleo_l476rg/Kconfig.nucleo_l476rg
@@ -0,0 +1,5 @@
+# Copyright (c) 2016 BayLibre, SAS
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_NUCLEO_L476RG
+	select SOC_STM32L476XX
diff --git a/boards/boards_legacy/arm/nucleo_l476rg/arduino_r3_connector.dtsi b/boards/st/nucleo_l476rg/arduino_r3_connector.dtsi
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l476rg/arduino_r3_connector.dtsi
rename to boards/st/nucleo_l476rg/arduino_r3_connector.dtsi
diff --git a/boards/boards_legacy/arm/nucleo_l476rg/board.cmake b/boards/st/nucleo_l476rg/board.cmake
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l476rg/board.cmake
rename to boards/st/nucleo_l476rg/board.cmake
diff --git a/boards/st/nucleo_l476rg/board.yml b/boards/st/nucleo_l476rg/board.yml
new file mode 100644
index 00000000000000..c6b21713e34ec1
--- /dev/null
+++ b/boards/st/nucleo_l476rg/board.yml
@@ -0,0 +1,5 @@
+board:
+  name: nucleo_l476rg
+  vendor: st
+  socs:
+    - name: stm32l476xx
diff --git a/boards/boards_legacy/arm/nucleo_l476rg/doc/img/nucleo_l476rg.jpg b/boards/st/nucleo_l476rg/doc/img/nucleo_l476rg.jpg
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l476rg/doc/img/nucleo_l476rg.jpg
rename to boards/st/nucleo_l476rg/doc/img/nucleo_l476rg.jpg
diff --git a/boards/boards_legacy/arm/nucleo_l476rg/doc/img/nucleo_l476rg_arduino.jpg b/boards/st/nucleo_l476rg/doc/img/nucleo_l476rg_arduino.jpg
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l476rg/doc/img/nucleo_l476rg_arduino.jpg
rename to boards/st/nucleo_l476rg/doc/img/nucleo_l476rg_arduino.jpg
diff --git a/boards/boards_legacy/arm/nucleo_l476rg/doc/img/nucleo_l476rg_morpho.jpg b/boards/st/nucleo_l476rg/doc/img/nucleo_l476rg_morpho.jpg
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l476rg/doc/img/nucleo_l476rg_morpho.jpg
rename to boards/st/nucleo_l476rg/doc/img/nucleo_l476rg_morpho.jpg
diff --git a/boards/boards_legacy/arm/nucleo_l476rg/doc/index.rst b/boards/st/nucleo_l476rg/doc/index.rst
similarity index 99%
rename from boards/boards_legacy/arm/nucleo_l476rg/doc/index.rst
rename to boards/st/nucleo_l476rg/doc/index.rst
index 10dff333643841..a45b18b339e189 100644
--- a/boards/boards_legacy/arm/nucleo_l476rg/doc/index.rst
+++ b/boards/st/nucleo_l476rg/doc/index.rst
@@ -127,7 +127,7 @@ The Zephyr nucleo_l476rg board configuration supports the following hardware fea
 Other hardware features are not yet supported on this Zephyr port.
 
 The default configuration can be found in the defconfig file:
-``boards/arm/nucleo_l476rg/nucleo_l476rg_defconfig``
+:zephyr_file:`boards/st/nucleo_l476rg/nucleo_l476rg_defconfig`
 
 
 Connections and IOs
diff --git a/boards/boards_legacy/arm/nucleo_l476rg/nucleo_l476rg.dts b/boards/st/nucleo_l476rg/nucleo_l476rg.dts
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l476rg/nucleo_l476rg.dts
rename to boards/st/nucleo_l476rg/nucleo_l476rg.dts
diff --git a/boards/boards_legacy/arm/nucleo_l476rg/nucleo_l476rg.yaml b/boards/st/nucleo_l476rg/nucleo_l476rg.yaml
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l476rg/nucleo_l476rg.yaml
rename to boards/st/nucleo_l476rg/nucleo_l476rg.yaml
diff --git a/boards/boards_legacy/arm/nucleo_l476rg/nucleo_l476rg_defconfig b/boards/st/nucleo_l476rg/nucleo_l476rg_defconfig
similarity index 85%
rename from boards/boards_legacy/arm/nucleo_l476rg/nucleo_l476rg_defconfig
rename to boards/st/nucleo_l476rg/nucleo_l476rg_defconfig
index 0ba22d7b6c432f..76e7e50d1fac52 100644
--- a/boards/boards_legacy/arm/nucleo_l476rg/nucleo_l476rg_defconfig
+++ b/boards/st/nucleo_l476rg/nucleo_l476rg_defconfig
@@ -1,8 +1,5 @@
 # SPDX-License-Identifier: Apache-2.0
 
-CONFIG_SOC_SERIES_STM32L4X=y
-CONFIG_SOC_STM32L476XX=y
-
 # enable uart driver
 CONFIG_SERIAL=y
 
diff --git a/boards/boards_legacy/arm/nucleo_l476rg/st_morpho_connector.dtsi b/boards/st/nucleo_l476rg/st_morpho_connector.dtsi
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l476rg/st_morpho_connector.dtsi
rename to boards/st/nucleo_l476rg/st_morpho_connector.dtsi
diff --git a/boards/boards_legacy/arm/nucleo_l496zg/support/openocd.cfg b/boards/st/nucleo_l476rg/support/openocd.cfg
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l496zg/support/openocd.cfg
rename to boards/st/nucleo_l476rg/support/openocd.cfg
diff --git a/boards/boards_legacy/arm/nucleo_l496zg/Kconfig.defconfig b/boards/st/nucleo_l496zg/Kconfig.defconfig
similarity index 85%
rename from boards/boards_legacy/arm/nucleo_l496zg/Kconfig.defconfig
rename to boards/st/nucleo_l496zg/Kconfig.defconfig
index 34fcc96575a220..f15b6d411eca88 100644
--- a/boards/boards_legacy/arm/nucleo_l496zg/Kconfig.defconfig
+++ b/boards/st/nucleo_l496zg/Kconfig.defconfig
@@ -5,9 +5,6 @@
 
 if BOARD_NUCLEO_L496ZG
 
-config BOARD
-	default "nucleo_l496zg"
-
 config SPI_STM32_INTERRUPT
 	default y
 	depends on SPI
diff --git a/boards/boards_legacy/arm/nucleo_l496zg/Kconfig.board b/boards/st/nucleo_l496zg/Kconfig.nucleo_l496zg
similarity index 51%
rename from boards/boards_legacy/arm/nucleo_l496zg/Kconfig.board
rename to boards/st/nucleo_l496zg/Kconfig.nucleo_l496zg
index 908385c5f53ba9..79dc7f4b042d16 100644
--- a/boards/boards_legacy/arm/nucleo_l496zg/Kconfig.board
+++ b/boards/st/nucleo_l496zg/Kconfig.nucleo_l496zg
@@ -1,8 +1,5 @@
-# STM32L496ZG Nucleo board configuration
-
 # Copyright (c) 2018-2019 Centaur Analytics, Inc
 # SPDX-License-Identifier: Apache-2.0
 
 config BOARD_NUCLEO_L496ZG
-	bool "Nucleo L496ZG Development Board"
-	depends on SOC_STM32L496XX
+	select SOC_STM32L496XX
diff --git a/boards/boards_legacy/arm/nucleo_l496zg/arduino_r3_connector.dtsi b/boards/st/nucleo_l496zg/arduino_r3_connector.dtsi
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l496zg/arduino_r3_connector.dtsi
rename to boards/st/nucleo_l496zg/arduino_r3_connector.dtsi
diff --git a/boards/boards_legacy/arm/nucleo_l496zg/board.cmake b/boards/st/nucleo_l496zg/board.cmake
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l496zg/board.cmake
rename to boards/st/nucleo_l496zg/board.cmake
diff --git a/boards/st/nucleo_l496zg/board.yml b/boards/st/nucleo_l496zg/board.yml
new file mode 100644
index 00000000000000..3d1c909cffc790
--- /dev/null
+++ b/boards/st/nucleo_l496zg/board.yml
@@ -0,0 +1,5 @@
+board:
+  name: nucleo_l496zg
+  vendor: st
+  socs:
+    - name: stm32l496xx
diff --git a/boards/boards_legacy/arm/nucleo_l496zg/doc/img/nucleo_l496zg.jpg b/boards/st/nucleo_l496zg/doc/img/nucleo_l496zg.jpg
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l496zg/doc/img/nucleo_l496zg.jpg
rename to boards/st/nucleo_l496zg/doc/img/nucleo_l496zg.jpg
diff --git a/boards/boards_legacy/arm/nucleo_l496zg/doc/index.rst b/boards/st/nucleo_l496zg/doc/index.rst
similarity index 99%
rename from boards/boards_legacy/arm/nucleo_l496zg/doc/index.rst
rename to boards/st/nucleo_l496zg/doc/index.rst
index 49d011b8846751..da208a4c8d931f 100644
--- a/boards/boards_legacy/arm/nucleo_l496zg/doc/index.rst
+++ b/boards/st/nucleo_l496zg/doc/index.rst
@@ -133,7 +133,7 @@ The Zephyr nucleo_l496zg board configuration supports the following hardware fea
 Other hardware features are not yet supported on this Zephyr port.
 
 The default configuration can be found in the defconfig file:
-``boards/arm/nucleo_l496zg/nucleo_l496zg_defconfig``
+:zephyr_file:`boards/st/nucleo_l496zg/nucleo_l496zg_defconfig`
 
 
 Connections and IOs
diff --git a/boards/boards_legacy/arm/nucleo_l496zg/nucleo_l496zg.dts b/boards/st/nucleo_l496zg/nucleo_l496zg.dts
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l496zg/nucleo_l496zg.dts
rename to boards/st/nucleo_l496zg/nucleo_l496zg.dts
diff --git a/boards/boards_legacy/arm/nucleo_l496zg/nucleo_l496zg.yaml b/boards/st/nucleo_l496zg/nucleo_l496zg.yaml
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l496zg/nucleo_l496zg.yaml
rename to boards/st/nucleo_l496zg/nucleo_l496zg.yaml
diff --git a/boards/boards_legacy/arm/nucleo_l496zg/nucleo_l496zg_defconfig b/boards/st/nucleo_l496zg/nucleo_l496zg_defconfig
similarity index 85%
rename from boards/boards_legacy/arm/nucleo_l496zg/nucleo_l496zg_defconfig
rename to boards/st/nucleo_l496zg/nucleo_l496zg_defconfig
index e195230eb20829..5ef11a3cb3ff67 100644
--- a/boards/boards_legacy/arm/nucleo_l496zg/nucleo_l496zg_defconfig
+++ b/boards/st/nucleo_l496zg/nucleo_l496zg_defconfig
@@ -1,8 +1,5 @@
 # SPDX-License-Identifier: Apache-2.0
 
-CONFIG_SOC_SERIES_STM32L4X=y
-CONFIG_SOC_STM32L496XX=y
-
 # enable uart driver
 CONFIG_SERIAL=y
 
diff --git a/boards/boards_legacy/arm/nucleo_l4a6zg/support/openocd.cfg b/boards/st/nucleo_l496zg/support/openocd.cfg
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l4a6zg/support/openocd.cfg
rename to boards/st/nucleo_l496zg/support/openocd.cfg
diff --git a/boards/boards_legacy/arm/nucleo_l4a6zg/Kconfig.defconfig b/boards/st/nucleo_l4a6zg/Kconfig.defconfig
similarity index 85%
rename from boards/boards_legacy/arm/nucleo_l4a6zg/Kconfig.defconfig
rename to boards/st/nucleo_l4a6zg/Kconfig.defconfig
index c08656612952be..a7e0339c369b90 100644
--- a/boards/boards_legacy/arm/nucleo_l4a6zg/Kconfig.defconfig
+++ b/boards/st/nucleo_l4a6zg/Kconfig.defconfig
@@ -5,9 +5,6 @@
 
 if BOARD_NUCLEO_L4A6ZG
 
-config BOARD
-	default "nucleo_l4a6zg"
-
 config SPI_STM32_INTERRUPT
 	default y
 	depends on SPI
diff --git a/boards/st/nucleo_l4a6zg/Kconfig.nucleo_l4a6zg b/boards/st/nucleo_l4a6zg/Kconfig.nucleo_l4a6zg
new file mode 100644
index 00000000000000..fb33c9a9a23d16
--- /dev/null
+++ b/boards/st/nucleo_l4a6zg/Kconfig.nucleo_l4a6zg
@@ -0,0 +1,5 @@
+# Copyright (c) 2022 Tomislav Milkovic
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_NUCLEO_L4A6ZG
+	select SOC_STM32L4A6XX
diff --git a/boards/boards_legacy/arm/nucleo_l4a6zg/arduino_r3_connector.dtsi b/boards/st/nucleo_l4a6zg/arduino_r3_connector.dtsi
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l4a6zg/arduino_r3_connector.dtsi
rename to boards/st/nucleo_l4a6zg/arduino_r3_connector.dtsi
diff --git a/boards/boards_legacy/arm/nucleo_l4a6zg/board.cmake b/boards/st/nucleo_l4a6zg/board.cmake
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l4a6zg/board.cmake
rename to boards/st/nucleo_l4a6zg/board.cmake
diff --git a/boards/st/nucleo_l4a6zg/board.yml b/boards/st/nucleo_l4a6zg/board.yml
new file mode 100644
index 00000000000000..6e935c5d0826ae
--- /dev/null
+++ b/boards/st/nucleo_l4a6zg/board.yml
@@ -0,0 +1,5 @@
+board:
+  name: nucleo_l4a6zg
+  vendor: st
+  socs:
+    - name: stm32l4a6xx
diff --git a/boards/boards_legacy/arm/nucleo_l4a6zg/doc/index.rst b/boards/st/nucleo_l4a6zg/doc/index.rst
similarity index 99%
rename from boards/boards_legacy/arm/nucleo_l4a6zg/doc/index.rst
rename to boards/st/nucleo_l4a6zg/doc/index.rst
index 7e61d9f8907679..30cac697ddee3d 100644
--- a/boards/boards_legacy/arm/nucleo_l4a6zg/doc/index.rst
+++ b/boards/st/nucleo_l4a6zg/doc/index.rst
@@ -138,7 +138,7 @@ The Zephyr nucleo_l4a6zg board configuration supports the following hardware fea
 Other hardware features are not yet supported on this Zephyr port.
 
 The default configuration can be found in the defconfig file:
-``boards/arm/nucleo_l4a6zg/nucleo_l4a6zg_defconfig``
+:zephyr_file:`boards/st/nucleo_l4a6zg/nucleo_l4a6zg_defconfig`
 
 
 Connections and IOs
diff --git a/boards/boards_legacy/arm/nucleo_l4a6zg/nucleo_l4a6zg.dts b/boards/st/nucleo_l4a6zg/nucleo_l4a6zg.dts
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l4a6zg/nucleo_l4a6zg.dts
rename to boards/st/nucleo_l4a6zg/nucleo_l4a6zg.dts
diff --git a/boards/boards_legacy/arm/nucleo_l4a6zg/nucleo_l4a6zg.yaml b/boards/st/nucleo_l4a6zg/nucleo_l4a6zg.yaml
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l4a6zg/nucleo_l4a6zg.yaml
rename to boards/st/nucleo_l4a6zg/nucleo_l4a6zg.yaml
diff --git a/boards/boards_legacy/arm/nucleo_l4a6zg/nucleo_l4a6zg_defconfig b/boards/st/nucleo_l4a6zg/nucleo_l4a6zg_defconfig
similarity index 85%
rename from boards/boards_legacy/arm/nucleo_l4a6zg/nucleo_l4a6zg_defconfig
rename to boards/st/nucleo_l4a6zg/nucleo_l4a6zg_defconfig
index a2e8b6eb212c5b..5ef11a3cb3ff67 100644
--- a/boards/boards_legacy/arm/nucleo_l4a6zg/nucleo_l4a6zg_defconfig
+++ b/boards/st/nucleo_l4a6zg/nucleo_l4a6zg_defconfig
@@ -1,8 +1,5 @@
 # SPDX-License-Identifier: Apache-2.0
 
-CONFIG_SOC_SERIES_STM32L4X=y
-CONFIG_SOC_STM32L4A6XX=y
-
 # enable uart driver
 CONFIG_SERIAL=y
 
diff --git a/boards/boards_legacy/arm/nucleo_l4r5zi/support/openocd.cfg b/boards/st/nucleo_l4a6zg/support/openocd.cfg
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l4r5zi/support/openocd.cfg
rename to boards/st/nucleo_l4a6zg/support/openocd.cfg
diff --git a/boards/boards_legacy/arm/nucleo_l4r5zi/Kconfig.defconfig b/boards/st/nucleo_l4r5zi/Kconfig.defconfig
similarity index 89%
rename from boards/boards_legacy/arm/nucleo_l4r5zi/Kconfig.defconfig
rename to boards/st/nucleo_l4r5zi/Kconfig.defconfig
index 5b3db7604cbd99..31b375e87d2d9e 100644
--- a/boards/boards_legacy/arm/nucleo_l4r5zi/Kconfig.defconfig
+++ b/boards/st/nucleo_l4r5zi/Kconfig.defconfig
@@ -5,9 +5,6 @@
 
 if BOARD_NUCLEO_L4R5ZI
 
-config BOARD
-	default "nucleo_l4r5zi"
-
 config SPI_STM32_INTERRUPT
 	default y
 	depends on SPI
diff --git a/boards/st/nucleo_l4r5zi/Kconfig.nucleo_l4r5zi b/boards/st/nucleo_l4r5zi/Kconfig.nucleo_l4r5zi
new file mode 100644
index 00000000000000..06fe55dc6b5bb6
--- /dev/null
+++ b/boards/st/nucleo_l4r5zi/Kconfig.nucleo_l4r5zi
@@ -0,0 +1,5 @@
+# Copyright (c) 2018 Pushpal Sidhu
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_NUCLEO_L4R5ZI
+	select SOC_STM32L4R5XX
diff --git a/boards/boards_legacy/arm/nucleo_l4r5zi/arduino_r3_connector.dtsi b/boards/st/nucleo_l4r5zi/arduino_r3_connector.dtsi
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l4r5zi/arduino_r3_connector.dtsi
rename to boards/st/nucleo_l4r5zi/arduino_r3_connector.dtsi
diff --git a/boards/boards_legacy/arm/nucleo_l4r5zi/board.cmake b/boards/st/nucleo_l4r5zi/board.cmake
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l4r5zi/board.cmake
rename to boards/st/nucleo_l4r5zi/board.cmake
diff --git a/boards/st/nucleo_l4r5zi/board.yml b/boards/st/nucleo_l4r5zi/board.yml
new file mode 100644
index 00000000000000..46ead4d88316c3
--- /dev/null
+++ b/boards/st/nucleo_l4r5zi/board.yml
@@ -0,0 +1,5 @@
+board:
+  name: nucleo_l4r5zi
+  vendor: st
+  socs:
+    - name: stm32l4r5xx
diff --git a/boards/boards_legacy/arm/nucleo_l4r5zi/doc/img/nucleo144_layout.jpg b/boards/st/nucleo_l4r5zi/doc/img/nucleo144_layout.jpg
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l4r5zi/doc/img/nucleo144_layout.jpg
rename to boards/st/nucleo_l4r5zi/doc/img/nucleo144_layout.jpg
diff --git a/boards/boards_legacy/arm/nucleo_l4r5zi/doc/img/nucleo_l4r5zi.jpg b/boards/st/nucleo_l4r5zi/doc/img/nucleo_l4r5zi.jpg
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l4r5zi/doc/img/nucleo_l4r5zi.jpg
rename to boards/st/nucleo_l4r5zi/doc/img/nucleo_l4r5zi.jpg
diff --git a/boards/boards_legacy/arm/nucleo_l4r5zi/doc/index.rst b/boards/st/nucleo_l4r5zi/doc/index.rst
similarity index 99%
rename from boards/boards_legacy/arm/nucleo_l4r5zi/doc/index.rst
rename to boards/st/nucleo_l4r5zi/doc/index.rst
index b132403ce2adbd..f449c985a83600 100644
--- a/boards/boards_legacy/arm/nucleo_l4r5zi/doc/index.rst
+++ b/boards/st/nucleo_l4r5zi/doc/index.rst
@@ -145,7 +145,7 @@ hardware features:
 Other hardware features are not yet supported on this Zephyr port.
 
 The default configuration can be found in the defconfig file:
-``boards/arm/nucleo_l4r5zi/nucleo_l4r5zi_defconfig``
+:zephyr_file:`boards/st/nucleo_l4r5zi/nucleo_l4r5zi_defconfig`
 
 
 Connections and IOs
diff --git a/boards/boards_legacy/arm/nucleo_l4r5zi/nucleo_l4r5zi.dts b/boards/st/nucleo_l4r5zi/nucleo_l4r5zi.dts
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l4r5zi/nucleo_l4r5zi.dts
rename to boards/st/nucleo_l4r5zi/nucleo_l4r5zi.dts
diff --git a/boards/boards_legacy/arm/nucleo_l4r5zi/nucleo_l4r5zi.yaml b/boards/st/nucleo_l4r5zi/nucleo_l4r5zi.yaml
similarity index 100%
rename from boards/boards_legacy/arm/nucleo_l4r5zi/nucleo_l4r5zi.yaml
rename to boards/st/nucleo_l4r5zi/nucleo_l4r5zi.yaml
diff --git a/boards/boards_legacy/arm/nucleo_l4r5zi/nucleo_l4r5zi_defconfig b/boards/st/nucleo_l4r5zi/nucleo_l4r5zi_defconfig
similarity index 85%
rename from boards/boards_legacy/arm/nucleo_l4r5zi/nucleo_l4r5zi_defconfig
rename to boards/st/nucleo_l4r5zi/nucleo_l4r5zi_defconfig
index 0efb42f55a9f67..4ba8077edd667c 100644
--- a/boards/boards_legacy/arm/nucleo_l4r5zi/nucleo_l4r5zi_defconfig
+++ b/boards/st/nucleo_l4r5zi/nucleo_l4r5zi_defconfig
@@ -1,8 +1,5 @@
 # SPDX-License-Identifier: Apache-2.0
 
-CONFIG_SOC_SERIES_STM32L4X=y
-CONFIG_SOC_STM32L4R5XX=y
-
 # enable uart driver
 CONFIG_SERIAL=y
 
diff --git a/boards/boards_legacy/arm/sensortile_box/support/openocd.cfg b/boards/st/nucleo_l4r5zi/support/openocd.cfg
similarity index 100%
rename from boards/boards_legacy/arm/sensortile_box/support/openocd.cfg
rename to boards/st/nucleo_l4r5zi/support/openocd.cfg
diff --git a/boards/boards_legacy/arm/sensortile_box/Kconfig.defconfig b/boards/st/sensortile_box/Kconfig.defconfig
similarity index 91%
rename from boards/boards_legacy/arm/sensortile_box/Kconfig.defconfig
rename to boards/st/sensortile_box/Kconfig.defconfig
index 1f3d19b39cadae..29aa7598ef81b0 100644
--- a/boards/boards_legacy/arm/sensortile_box/Kconfig.defconfig
+++ b/boards/st/sensortile_box/Kconfig.defconfig
@@ -5,9 +5,6 @@
 
 if BOARD_SENSORTILE_BOX
 
-config BOARD
-	default "sensortile_box"
-
 if BT
 
 config SPI
diff --git a/boards/boards_legacy/arm/sensortile_box/Kconfig.board b/boards/st/sensortile_box/Kconfig.sensortile_box
similarity index 50%
rename from boards/boards_legacy/arm/sensortile_box/Kconfig.board
rename to boards/st/sensortile_box/Kconfig.sensortile_box
index 5341a09871afdb..0d7ec6b82af5f5 100644
--- a/boards/boards_legacy/arm/sensortile_box/Kconfig.board
+++ b/boards/st/sensortile_box/Kconfig.sensortile_box
@@ -1,8 +1,5 @@
-# SensorTile.box board configuration
-
 # Copyright (c) 2019 STMicroelectronics
 # SPDX-License-Identifier: Apache-2.0
 
 config BOARD_SENSORTILE_BOX
-	bool "SensorTile.box Development Board"
-	depends on SOC_STM32L4R9XX
+	select SOC_STM32L4R9XX
diff --git a/boards/boards_legacy/arm/sensortile_box/board.cmake b/boards/st/sensortile_box/board.cmake
similarity index 100%
rename from boards/boards_legacy/arm/sensortile_box/board.cmake
rename to boards/st/sensortile_box/board.cmake
diff --git a/boards/st/sensortile_box/board.yml b/boards/st/sensortile_box/board.yml
new file mode 100644
index 00000000000000..4ac086b2cb7c97
--- /dev/null
+++ b/boards/st/sensortile_box/board.yml
@@ -0,0 +1,5 @@
+board:
+  name: sensortile_box
+  vendor: st
+  socs:
+    - name: stm32l4r9xx
diff --git a/boards/boards_legacy/arm/sensortile_box/doc/img/sensortile_box.jpg b/boards/st/sensortile_box/doc/img/sensortile_box.jpg
similarity index 100%
rename from boards/boards_legacy/arm/sensortile_box/doc/img/sensortile_box.jpg
rename to boards/st/sensortile_box/doc/img/sensortile_box.jpg
diff --git a/boards/boards_legacy/arm/sensortile_box/doc/index.rst b/boards/st/sensortile_box/doc/index.rst
similarity index 100%
rename from boards/boards_legacy/arm/sensortile_box/doc/index.rst
rename to boards/st/sensortile_box/doc/index.rst
diff --git a/boards/boards_legacy/arm/sensortile_box/sensortile_box.dts b/boards/st/sensortile_box/sensortile_box.dts
similarity index 100%
rename from boards/boards_legacy/arm/sensortile_box/sensortile_box.dts
rename to boards/st/sensortile_box/sensortile_box.dts
diff --git a/boards/boards_legacy/arm/sensortile_box/sensortile_box.yaml b/boards/st/sensortile_box/sensortile_box.yaml
similarity index 100%
rename from boards/boards_legacy/arm/sensortile_box/sensortile_box.yaml
rename to boards/st/sensortile_box/sensortile_box.yaml
diff --git a/boards/boards_legacy/arm/sensortile_box/sensortile_box_defconfig b/boards/st/sensortile_box/sensortile_box_defconfig
similarity index 85%
rename from boards/boards_legacy/arm/sensortile_box/sensortile_box_defconfig
rename to boards/st/sensortile_box/sensortile_box_defconfig
index 2970c68d6c9e7a..4ba8077edd667c 100644
--- a/boards/boards_legacy/arm/sensortile_box/sensortile_box_defconfig
+++ b/boards/st/sensortile_box/sensortile_box_defconfig
@@ -1,8 +1,5 @@
 # SPDX-License-Identifier: Apache-2.0
 
-CONFIG_SOC_SERIES_STM32L4X=y
-CONFIG_SOC_STM32L4R9XX=y
-
 # enable uart driver
 CONFIG_SERIAL=y
 
diff --git a/boards/boards_legacy/arm/swan_r5/support/openocd.cfg b/boards/st/sensortile_box/support/openocd.cfg
similarity index 100%
rename from boards/boards_legacy/arm/swan_r5/support/openocd.cfg
rename to boards/st/sensortile_box/support/openocd.cfg
diff --git a/boards/st/stm32l476g_disco/Kconfig.stm32l476g_disco b/boards/st/stm32l476g_disco/Kconfig.stm32l476g_disco
new file mode 100644
index 00000000000000..7c062054f4480f
--- /dev/null
+++ b/boards/st/stm32l476g_disco/Kconfig.stm32l476g_disco
@@ -0,0 +1,5 @@
+# Copyright (c) 2017 Arthur Sfez
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_STM32L476G_DISCO
+	select SOC_STM32L476XX
diff --git a/boards/boards_legacy/arm/stm32l476g_disco/board.cmake b/boards/st/stm32l476g_disco/board.cmake
similarity index 100%
rename from boards/boards_legacy/arm/stm32l476g_disco/board.cmake
rename to boards/st/stm32l476g_disco/board.cmake
diff --git a/boards/st/stm32l476g_disco/board.yml b/boards/st/stm32l476g_disco/board.yml
new file mode 100644
index 00000000000000..c82c2c618430e1
--- /dev/null
+++ b/boards/st/stm32l476g_disco/board.yml
@@ -0,0 +1,5 @@
+board:
+  name: stm32l476g_disco
+  vendor: st
+  socs:
+    - name: stm32l476xx
diff --git a/boards/boards_legacy/arm/stm32l476g_disco/doc/img/stm32l476g_disco.jpg b/boards/st/stm32l476g_disco/doc/img/stm32l476g_disco.jpg
similarity index 100%
rename from boards/boards_legacy/arm/stm32l476g_disco/doc/img/stm32l476g_disco.jpg
rename to boards/st/stm32l476g_disco/doc/img/stm32l476g_disco.jpg
diff --git a/boards/boards_legacy/arm/stm32l476g_disco/doc/index.rst b/boards/st/stm32l476g_disco/doc/index.rst
similarity index 99%
rename from boards/boards_legacy/arm/stm32l476g_disco/doc/index.rst
rename to boards/st/stm32l476g_disco/doc/index.rst
index 65eef57c609f9c..ef40802a709aa9 100644
--- a/boards/boards_legacy/arm/stm32l476g_disco/doc/index.rst
+++ b/boards/st/stm32l476g_disco/doc/index.rst
@@ -126,7 +126,7 @@ Other hardware features are not yet supported on this Zephyr port.
 
 The default configuration can be found in the defconfig file:
 
-	``boards/arm/stm32l476g_disco/stm32l476g_disco_defconfig``
+	:zephyr_file:`boards/st/stm32l476g_disco/stm32l476g_disco_defconfig`
 
 
 Connections and IOs
diff --git a/boards/boards_legacy/arm/stm32l476g_disco/stm32l476g_disco.dts b/boards/st/stm32l476g_disco/stm32l476g_disco.dts
similarity index 100%
rename from boards/boards_legacy/arm/stm32l476g_disco/stm32l476g_disco.dts
rename to boards/st/stm32l476g_disco/stm32l476g_disco.dts
diff --git a/boards/boards_legacy/arm/stm32l476g_disco/stm32l476g_disco.yaml b/boards/st/stm32l476g_disco/stm32l476g_disco.yaml
similarity index 100%
rename from boards/boards_legacy/arm/stm32l476g_disco/stm32l476g_disco.yaml
rename to boards/st/stm32l476g_disco/stm32l476g_disco.yaml
diff --git a/boards/boards_legacy/arm/stm32l476g_disco/stm32l476g_disco_defconfig b/boards/st/stm32l476g_disco/stm32l476g_disco_defconfig
similarity index 85%
rename from boards/boards_legacy/arm/stm32l476g_disco/stm32l476g_disco_defconfig
rename to boards/st/stm32l476g_disco/stm32l476g_disco_defconfig
index 0f0f47059fe071..82ee7285d52d8a 100644
--- a/boards/boards_legacy/arm/stm32l476g_disco/stm32l476g_disco_defconfig
+++ b/boards/st/stm32l476g_disco/stm32l476g_disco_defconfig
@@ -1,8 +1,5 @@
 # SPDX-License-Identifier: Apache-2.0
 
-CONFIG_SOC_SERIES_STM32L4X=y
-CONFIG_SOC_STM32L476XX=y
-
 # Enable MPU
 CONFIG_ARM_MPU=y
 
diff --git a/boards/boards_legacy/arm/stm32l476g_disco/support/openocd.cfg b/boards/st/stm32l476g_disco/support/openocd.cfg
similarity index 100%
rename from boards/boards_legacy/arm/stm32l476g_disco/support/openocd.cfg
rename to boards/st/stm32l476g_disco/support/openocd.cfg
diff --git a/boards/boards_legacy/arm/stm32l496g_disco/CMakeLists.txt b/boards/st/stm32l496g_disco/CMakeLists.txt
similarity index 100%
rename from boards/boards_legacy/arm/stm32l496g_disco/CMakeLists.txt
rename to boards/st/stm32l496g_disco/CMakeLists.txt
diff --git a/boards/boards_legacy/arm/stm32l496g_disco/Kconfig.defconfig b/boards/st/stm32l496g_disco/Kconfig.defconfig
similarity index 88%
rename from boards/boards_legacy/arm/stm32l496g_disco/Kconfig.defconfig
rename to boards/st/stm32l496g_disco/Kconfig.defconfig
index 114aacf680d937..604ea42983c33f 100644
--- a/boards/boards_legacy/arm/stm32l496g_disco/Kconfig.defconfig
+++ b/boards/st/stm32l496g_disco/Kconfig.defconfig
@@ -6,9 +6,6 @@
 
 if BOARD_STM32L496G_DISCO
 
-config BOARD
-	default "stm32l496g_disco"
-
 config SPI_STM32_INTERRUPT
 	default y
 	depends on SPI
diff --git a/boards/st/stm32l496g_disco/Kconfig.stm32l496g_disco b/boards/st/stm32l496g_disco/Kconfig.stm32l496g_disco
new file mode 100644
index 00000000000000..43f50ffced9f0d
--- /dev/null
+++ b/boards/st/stm32l496g_disco/Kconfig.stm32l496g_disco
@@ -0,0 +1,5 @@
+# Copyright (c) 2019 Centaur Analytics, Inc
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_STM32L496G_DISCO
+	select SOC_STM32L496XX
diff --git a/boards/boards_legacy/arm/stm32l496g_disco/arduino_r3_connector.dtsi b/boards/st/stm32l496g_disco/arduino_r3_connector.dtsi
similarity index 100%
rename from boards/boards_legacy/arm/stm32l496g_disco/arduino_r3_connector.dtsi
rename to boards/st/stm32l496g_disco/arduino_r3_connector.dtsi
diff --git a/boards/boards_legacy/arm/stm32l496g_disco/board.cmake b/boards/st/stm32l496g_disco/board.cmake
similarity index 100%
rename from boards/boards_legacy/arm/stm32l496g_disco/board.cmake
rename to boards/st/stm32l496g_disco/board.cmake
diff --git a/boards/st/stm32l496g_disco/board.yml b/boards/st/stm32l496g_disco/board.yml
new file mode 100644
index 00000000000000..9d6b18a598d7b4
--- /dev/null
+++ b/boards/st/stm32l496g_disco/board.yml
@@ -0,0 +1,5 @@
+board:
+  name: stm32l496g_disco
+  vendor: st
+  socs:
+    - name: stm32l496xx
diff --git a/boards/boards_legacy/arm/stm32l496g_disco/board_adc_vref.c b/boards/st/stm32l496g_disco/board_adc_vref.c
similarity index 100%
rename from boards/boards_legacy/arm/stm32l496g_disco/board_adc_vref.c
rename to boards/st/stm32l496g_disco/board_adc_vref.c
diff --git a/boards/boards_legacy/arm/stm32l496g_disco/doc/img/stm32l496g_disco.jpg b/boards/st/stm32l496g_disco/doc/img/stm32l496g_disco.jpg
similarity index 100%
rename from boards/boards_legacy/arm/stm32l496g_disco/doc/img/stm32l496g_disco.jpg
rename to boards/st/stm32l496g_disco/doc/img/stm32l496g_disco.jpg
diff --git a/boards/boards_legacy/arm/stm32l496g_disco/doc/index.rst b/boards/st/stm32l496g_disco/doc/index.rst
similarity index 99%
rename from boards/boards_legacy/arm/stm32l496g_disco/doc/index.rst
rename to boards/st/stm32l496g_disco/doc/index.rst
index e8bc81f092b9e8..576c07bc2cc9ac 100644
--- a/boards/boards_legacy/arm/stm32l496g_disco/doc/index.rst
+++ b/boards/st/stm32l496g_disco/doc/index.rst
@@ -155,7 +155,7 @@ Other hardware features are not yet supported on this Zephyr port.
 
 The default configuration can be found in the defconfig file:
 
-	``boards/arm/stm32l496g_disco/stm32l496g_disco_defconfig``
+	:zephyr_file:`boards/st/stm32l496g_disco/stm32l496g_disco_defconfig`
 
 
 Connections and IOs
diff --git a/boards/boards_legacy/arm/stm32l496g_disco/stm32l496g_disco.dts b/boards/st/stm32l496g_disco/stm32l496g_disco.dts
similarity index 100%
rename from boards/boards_legacy/arm/stm32l496g_disco/stm32l496g_disco.dts
rename to boards/st/stm32l496g_disco/stm32l496g_disco.dts
diff --git a/boards/boards_legacy/arm/stm32l496g_disco/stm32l496g_disco.yaml b/boards/st/stm32l496g_disco/stm32l496g_disco.yaml
similarity index 100%
rename from boards/boards_legacy/arm/stm32l496g_disco/stm32l496g_disco.yaml
rename to boards/st/stm32l496g_disco/stm32l496g_disco.yaml
diff --git a/boards/boards_legacy/arm/stm32l496g_disco/stm32l496g_disco_defconfig b/boards/st/stm32l496g_disco/stm32l496g_disco_defconfig
similarity index 85%
rename from boards/boards_legacy/arm/stm32l496g_disco/stm32l496g_disco_defconfig
rename to boards/st/stm32l496g_disco/stm32l496g_disco_defconfig
index d2d940208b5ce4..c7582ad0d95389 100644
--- a/boards/boards_legacy/arm/stm32l496g_disco/stm32l496g_disco_defconfig
+++ b/boards/st/stm32l496g_disco/stm32l496g_disco_defconfig
@@ -1,8 +1,5 @@
 # SPDX-License-Identifier: Apache-2.0
 
-CONFIG_SOC_SERIES_STM32L4X=y
-CONFIG_SOC_STM32L496XX=y
-
 # Enable MPU
 CONFIG_ARM_MPU=y
 
diff --git a/boards/boards_legacy/arm/stm32l496g_disco/support/openocd.cfg b/boards/st/stm32l496g_disco/support/openocd.cfg
similarity index 100%
rename from boards/boards_legacy/arm/stm32l496g_disco/support/openocd.cfg
rename to boards/st/stm32l496g_disco/support/openocd.cfg
diff --git a/boards/st/stm32l4r9i_disco/Kconfig.stm32l4r9i_disco b/boards/st/stm32l4r9i_disco/Kconfig.stm32l4r9i_disco
new file mode 100644
index 00000000000000..680643035711e0
--- /dev/null
+++ b/boards/st/stm32l4r9i_disco/Kconfig.stm32l4r9i_disco
@@ -0,0 +1,5 @@
+# Copyright (c) 2023 STMicroelectronics
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_STM32L4R9I_DISCO
+	select SOC_STM32L4R9XX
diff --git a/boards/boards_legacy/arm/stm32l4r9i_disco/arduino_r3_connector.dtsi b/boards/st/stm32l4r9i_disco/arduino_r3_connector.dtsi
similarity index 100%
rename from boards/boards_legacy/arm/stm32l4r9i_disco/arduino_r3_connector.dtsi
rename to boards/st/stm32l4r9i_disco/arduino_r3_connector.dtsi
diff --git a/boards/boards_legacy/arm/stm32l4r9i_disco/board.cmake b/boards/st/stm32l4r9i_disco/board.cmake
similarity index 100%
rename from boards/boards_legacy/arm/stm32l4r9i_disco/board.cmake
rename to boards/st/stm32l4r9i_disco/board.cmake
diff --git a/boards/st/stm32l4r9i_disco/board.yml b/boards/st/stm32l4r9i_disco/board.yml
new file mode 100644
index 00000000000000..267fd87932da75
--- /dev/null
+++ b/boards/st/stm32l4r9i_disco/board.yml
@@ -0,0 +1,5 @@
+board:
+  name: stm32l4r9i_disco
+  vendor: st
+  socs:
+    - name: stm32l4r9xx
diff --git a/boards/boards_legacy/arm/stm32l4r9i_disco/doc/img/stm32l4r9i_disco.jpg b/boards/st/stm32l4r9i_disco/doc/img/stm32l4r9i_disco.jpg
similarity index 100%
rename from boards/boards_legacy/arm/stm32l4r9i_disco/doc/img/stm32l4r9i_disco.jpg
rename to boards/st/stm32l4r9i_disco/doc/img/stm32l4r9i_disco.jpg
diff --git a/boards/boards_legacy/arm/stm32l4r9i_disco/doc/index.rst b/boards/st/stm32l4r9i_disco/doc/index.rst
similarity index 98%
rename from boards/boards_legacy/arm/stm32l4r9i_disco/doc/index.rst
rename to boards/st/stm32l4r9i_disco/doc/index.rst
index 0f651e2b9ffc25..e2053313122bf5 100644
--- a/boards/boards_legacy/arm/stm32l4r9i_disco/doc/index.rst
+++ b/boards/st/stm32l4r9i_disco/doc/index.rst
@@ -65,7 +65,7 @@ Other hardware features are not yet supported on Zephyr porting.
 
 The default configuration can be found in the defconfig file:
 
-	``boards/arm/stm32l4r9i_disco/stm32l4r9i_disco_defconfig``
+	:zephyr_file:`boards/st/stm32l4r9i_disco/stm32l4r9i_disco_defconfig`
 
 
 Pin Mapping
diff --git a/boards/boards_legacy/arm/stm32l4r9i_disco/stm32l4r9i_disco.dts b/boards/st/stm32l4r9i_disco/stm32l4r9i_disco.dts
similarity index 100%
rename from boards/boards_legacy/arm/stm32l4r9i_disco/stm32l4r9i_disco.dts
rename to boards/st/stm32l4r9i_disco/stm32l4r9i_disco.dts
diff --git a/boards/boards_legacy/arm/stm32l4r9i_disco/stm32l4r9i_disco.yaml b/boards/st/stm32l4r9i_disco/stm32l4r9i_disco.yaml
similarity index 100%
rename from boards/boards_legacy/arm/stm32l4r9i_disco/stm32l4r9i_disco.yaml
rename to boards/st/stm32l4r9i_disco/stm32l4r9i_disco.yaml
diff --git a/boards/boards_legacy/arm/stm32l4r9i_disco/stm32l4r9i_disco_defconfig b/boards/st/stm32l4r9i_disco/stm32l4r9i_disco_defconfig
similarity index 85%
rename from boards/boards_legacy/arm/stm32l4r9i_disco/stm32l4r9i_disco_defconfig
rename to boards/st/stm32l4r9i_disco/stm32l4r9i_disco_defconfig
index 546bd3379a8547..ac681be2af064e 100644
--- a/boards/boards_legacy/arm/stm32l4r9i_disco/stm32l4r9i_disco_defconfig
+++ b/boards/st/stm32l4r9i_disco/stm32l4r9i_disco_defconfig
@@ -1,8 +1,5 @@
 # SPDX-License-Identifier: Apache-2.0
 
-CONFIG_SOC_SERIES_STM32L4X=y
-CONFIG_SOC_STM32L4R9XX=y
-
 # Enable MPU
 CONFIG_ARM_MPU=y
 
diff --git a/boards/boards_legacy/arm/stm32l4r9i_disco/support/openocd.cfg b/boards/st/stm32l4r9i_disco/support/openocd.cfg
similarity index 100%
rename from boards/boards_legacy/arm/stm32l4r9i_disco/support/openocd.cfg
rename to boards/st/stm32l4r9i_disco/support/openocd.cfg
diff --git a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.soc b/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.soc
deleted file mode 100644
index 9719ff4b73d9a2..00000000000000
--- a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.soc
+++ /dev/null
@@ -1,70 +0,0 @@
-# ST Microelectronics STM32L4 MCU line
-
-# Copyright (c) 2016 Open-RnD Sp. z o.o.
-# Copyright (c) 2016 BayLibre, SAS
-# Copyright (c) 2019 Centaur Analytics, Inc
-# Copyright (c) 2019 STMicroelectronics
-# SPDX-License-Identifier: Apache-2.0
-
-choice
-	prompt "STM32L4x MCU Selection"
-	depends on SOC_SERIES_STM32L4X
-
-config SOC_STM32L476XX
-	bool "STM32L476XX"
-
-config SOC_STM32L486XX
-	bool "STM32L486XX"
-
-config SOC_STM32L496XX
-	bool "STM32L496XX"
-
-config SOC_STM32L4A6XX
-	bool "STM32L4A6XX"
-
-config SOC_STM32L412XX
-	bool "STM32L412XX"
-
-config SOC_STM32L422XX
-	bool "STM32L422XX"
-
-config SOC_STM32L431XX
-	bool "STM32L431XX"
-
-config SOC_STM32L432XX
-	bool "STM32L432XX"
-
-config SOC_STM32L433XX
-	bool "STM32L433XX"
-
-config SOC_STM32L451XX
-	bool "STM32L451XX"
-
-config SOC_STM32L452XX
-	bool "STM32L452XX"
-
-config SOC_STM32L462XX
-	bool "STM32L462XX"
-
-config SOC_STM32L475XX
-	bool "STM32L475XX"
-
-config SOC_STM32L4P5XX
-	bool "STM32L4P5XX"
-
-config SOC_STM32L4Q5XX
-	bool "STM32L4Q5XX"
-
-config SOC_STM32L4S5XX
-	bool "STM32L4S5XX"
-
-config SOC_STM32L4R5XX
-	bool "STM32L4R5XX"
-
-config SOC_STM32L4R9XX
-	bool "STM32L4R9XX"
-
-config SOC_STM32L471XX
-	bool "STM32L471XX"
-
-endchoice
diff --git a/soc/st/stm32/soc.yml b/soc/st/stm32/soc.yml
index 123b2b88dfe6a8..f2af437fdd3d00 100644
--- a/soc/st/stm32/soc.yml
+++ b/soc/st/stm32/soc.yml
@@ -97,6 +97,27 @@ family:
     - name: stm32l151xc
     - name: stm32l152xc
     - name: stm32l152xe
+  - name: stm32l4x
+    socs:
+    - name: stm32l412xx
+    - name: stm32l422xx
+    - name: stm32l431xx
+    - name: stm32l432xx
+    - name: stm32l433xx
+    - name: stm32l451xx
+    - name: stm32l452xx
+    - name: stm32l462xx
+    - name: stm32l471xx
+    - name: stm32l475xx
+    - name: stm32l476xx
+    - name: stm32l486xx
+    - name: stm32l496xx
+    - name: stm32l4a6xx
+    - name: stm32l4p5xx
+    - name: stm32l4q5xx
+    - name: stm32l4s5xx
+    - name: stm32l4r5xx
+    - name: stm32l4r9xx
   - name: stm32l5x
     socs:
     - name: stm32l552xx
diff --git a/soc/soc_legacy/arm/st_stm32/stm32l4/CMakeLists.txt b/soc/st/stm32/stm32l4/CMakeLists.txt
similarity index 91%
rename from soc/soc_legacy/arm/st_stm32/stm32l4/CMakeLists.txt
rename to soc/st/stm32/stm32l4/CMakeLists.txt
index 94edc2622740f6..2a910ba75121d3 100644
--- a/soc/soc_legacy/arm/st_stm32/stm32l4/CMakeLists.txt
+++ b/soc/st/stm32/stm32l4/CMakeLists.txt
@@ -11,4 +11,6 @@ zephyr_sources_ifdef(CONFIG_PM
 
 zephyr_sources_ifdef(CONFIG_POWEROFF poweroff.c)
 
+zephyr_include_directories(.)
+
 set(SOC_LINKER_SCRIPT ${ZEPHYR_BASE}/include/zephyr/arch/arm/cortex_m/scripts/linker.ld CACHE INTERNAL "")
diff --git a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.series b/soc/st/stm32/stm32l4/Kconfig
similarity index 78%
rename from soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.series
rename to soc/st/stm32/stm32l4/Kconfig
index 6ac4f1e704ca7f..80bc62075c3fce 100644
--- a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.series
+++ b/soc/st/stm32/stm32l4/Kconfig
@@ -5,16 +5,12 @@
 # SPDX-License-Identifier: Apache-2.0
 
 config SOC_SERIES_STM32L4X
-	bool "STM32L4x Series MCU"
 	select ARM
 	select CPU_CORTEX_M4
 	select CPU_CORTEX_M_HAS_DWT
 	select CPU_HAS_FPU
-	select SOC_FAMILY_STM32
 	select HAS_STM32CUBE
 	select CPU_HAS_ARM_MPU
 	select HAS_SWO
 	select HAS_PM
 	select HAS_POWEROFF
-	help
-	  Enable support for STM32L4 MCU series
diff --git a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.series b/soc/st/stm32/stm32l4/Kconfig.defconfig
similarity index 80%
rename from soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.series
rename to soc/st/stm32/stm32l4/Kconfig.defconfig
index d0761404eb58ee..7dcb3ff506c328 100644
--- a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.series
+++ b/soc/st/stm32/stm32l4/Kconfig.defconfig
@@ -8,7 +8,7 @@
 
 if SOC_SERIES_STM32L4X
 
-source "soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l4*"
+rsource "Kconfig.defconfig.stm32l4*"
 
 config SOC_SERIES
 	default "stm32l4"
diff --git a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l412xx b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l412xx
similarity index 84%
rename from soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l412xx
rename to soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l412xx
index 2918e3d3dd2608..eb73f26dc4df67 100644
--- a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l412xx
+++ b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l412xx
@@ -5,9 +5,6 @@
 
 if SOC_STM32L412XX
 
-config SOC
-	default "stm32l412xx"
-
 config NUM_IRQS
 	default 83
 
diff --git a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l422xx b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l422xx
similarity index 84%
rename from soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l422xx
rename to soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l422xx
index f6be07396bad9c..24143f8ede9445 100644
--- a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l422xx
+++ b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l422xx
@@ -5,9 +5,6 @@
 
 if SOC_STM32L422XX
 
-config SOC
-	default "stm32l422xx"
-
 config NUM_IRQS
 	default 83
 
diff --git a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l431xx b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l431xx
similarity index 83%
rename from soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l431xx
rename to soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l431xx
index d21a2bd58f94ed..65b1136536859d 100644
--- a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l431xx
+++ b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l431xx
@@ -5,9 +5,6 @@
 
 if SOC_STM32L431XX
 
-config SOC
-	default "stm32l431xx"
-
 config NUM_IRQS
 	default 83
 
diff --git a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l432xx b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l432xx
similarity index 86%
rename from soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l432xx
rename to soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l432xx
index d6ed27b7b44f37..b16bdfd5090bf9 100644
--- a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l432xx
+++ b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l432xx
@@ -6,9 +6,6 @@
 
 if SOC_STM32L432XX
 
-config SOC
-	default "stm32l432xx"
-
 config NUM_IRQS
 	default 83
 
diff --git a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l433xx b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l433xx
similarity index 84%
rename from soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l433xx
rename to soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l433xx
index d10133eb1a8939..2cb0b3162a0ef8 100644
--- a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l433xx
+++ b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l433xx
@@ -5,9 +5,6 @@
 
 if SOC_STM32L433XX
 
-config SOC
-	default "stm32l433xx"
-
 config NUM_IRQS
 	default 83
 
diff --git a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l451xx b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l451xx
similarity index 85%
rename from soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l451xx
rename to soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l451xx
index d3f5867a8dc123..36350d41b5e63c 100644
--- a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l451xx
+++ b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l451xx
@@ -5,9 +5,6 @@
 
 if SOC_STM32L451XX
 
-config SOC
-	default "stm32l451xx"
-
 config NUM_IRQS
 	default 85
 
diff --git a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l452xx b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l452xx
similarity index 84%
rename from soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l452xx
rename to soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l452xx
index 0c6cc32f1f896d..c1564d0513d837 100644
--- a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l452xx
+++ b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l452xx
@@ -5,9 +5,6 @@
 
 if SOC_STM32L452XX
 
-config SOC
-	default "stm32l452xx"
-
 config NUM_IRQS
 	default 85
 
diff --git a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l462xx b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l462xx
similarity index 84%
rename from soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l462xx
rename to soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l462xx
index 1c3575884b283e..57d136e67c55a0 100644
--- a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l462xx
+++ b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l462xx
@@ -5,9 +5,6 @@
 
 if SOC_STM32L462XX
 
-config SOC
-	default "stm32l462xx"
-
 config NUM_IRQS
 	default 85
 
diff --git a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l471xx b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l471xx
similarity index 84%
rename from soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l471xx
rename to soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l471xx
index afb35990beebfe..22e8dd61d44fc1 100644
--- a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l471xx
+++ b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l471xx
@@ -5,9 +5,6 @@
 
 if SOC_STM32L471XX
 
-config SOC
-	default "stm32l471xx"
-
 config NUM_IRQS
 	default 82
 
diff --git a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l475xx b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l475xx
similarity index 84%
rename from soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l475xx
rename to soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l475xx
index 25e11c3bcec364..0e3e1d231e6f58 100644
--- a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l475xx
+++ b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l475xx
@@ -5,9 +5,6 @@
 
 if SOC_STM32L475XX
 
-config SOC
-	default "stm32l475xx"
-
 config NUM_IRQS
 	default 82
 
diff --git a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l476xx b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l476xx
similarity index 86%
rename from soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l476xx
rename to soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l476xx
index d2f70cd6c662d6..bd53c4066cc3ac 100644
--- a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l476xx
+++ b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l476xx
@@ -6,9 +6,6 @@
 
 if SOC_STM32L476XX
 
-config SOC
-	default "stm32l476xx"
-
 config NUM_IRQS
 	default 82
 
diff --git a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l486xx b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l486xx
similarity index 88%
rename from soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l486xx
rename to soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l486xx
index 600948c5ffa477..4e5cbd8b5815aa 100644
--- a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l486xx
+++ b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l486xx
@@ -7,9 +7,6 @@
 
 if SOC_STM32L486XX
 
-config SOC
-	default "stm32l486xx"
-
 config NUM_IRQS
 	default 82
 
diff --git a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l496xx b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l496xx
similarity index 88%
rename from soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l496xx
rename to soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l496xx
index 6d5dcb62bade26..d7100e5c9caa74 100644
--- a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l496xx
+++ b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l496xx
@@ -7,9 +7,6 @@
 
 if SOC_STM32L496XX
 
-config SOC
-	default "stm32l496xx"
-
 config NUM_IRQS
 	default 91
 
diff --git a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l4a6xx b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l4a6xx
similarity index 89%
rename from soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l4a6xx
rename to soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l4a6xx
index 12a88ee608f3af..7cfcecfe204655 100644
--- a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l4a6xx
+++ b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l4a6xx
@@ -8,9 +8,6 @@
 
 if SOC_STM32L4A6XX
 
-config SOC
-	default "stm32l4a6xx"
-
 config NUM_IRQS
 	default 91
 
diff --git a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l4p5xx b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l4p5xx
similarity index 84%
rename from soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l4p5xx
rename to soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l4p5xx
index 605264f36a04e6..2c55c2d0113075 100644
--- a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l4p5xx
+++ b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l4p5xx
@@ -5,9 +5,6 @@
 
 if SOC_STM32L4P5XX
 
-config SOC
-	default "stm32l4p5xx"
-
 config NUM_IRQS
 	default 95
 
diff --git a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l4q5xx b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l4q5xx
similarity index 84%
rename from soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l4q5xx
rename to soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l4q5xx
index 964cd4ad9ad2ab..779d194eb4c234 100644
--- a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l4q5xx
+++ b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l4q5xx
@@ -5,9 +5,6 @@
 
 if SOC_STM32L4Q5XX
 
-config SOC
-	default "stm32l4q5xx"
-
 config NUM_IRQS
 	default 95
 
diff --git a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l4r5xx b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l4r5xx
similarity index 84%
rename from soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l4r5xx
rename to soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l4r5xx
index 3a22131077408d..301004d3a84a09 100644
--- a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l4r5xx
+++ b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l4r5xx
@@ -5,9 +5,6 @@
 
 if SOC_STM32L4R5XX
 
-config SOC
-	default "stm32l4r5xx"
-
 config NUM_IRQS
 	default 95
 
diff --git a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l4r9xx b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l4r9xx
similarity index 84%
rename from soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l4r9xx
rename to soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l4r9xx
index fd39575c550211..150a22332b7927 100644
--- a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l4r9xx
+++ b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l4r9xx
@@ -5,9 +5,6 @@
 
 if SOC_STM32L4R9XX
 
-config SOC
-	default "stm32l4r9xx"
-
 config NUM_IRQS
 	default 95
 
diff --git a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l4s5xx b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l4s5xx
similarity index 84%
rename from soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l4s5xx
rename to soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l4s5xx
index 79d97dbe08356f..85ab309e848bcc 100644
--- a/soc/soc_legacy/arm/st_stm32/stm32l4/Kconfig.defconfig.stm32l4s5xx
+++ b/soc/st/stm32/stm32l4/Kconfig.defconfig.stm32l4s5xx
@@ -5,9 +5,6 @@
 
 if SOC_STM32L4S5XX
 
-config SOC
-	default "stm32l4s5xx"
-
 config NUM_IRQS
 	default 95
 
diff --git a/soc/st/stm32/stm32l4/Kconfig.soc b/soc/st/stm32/stm32l4/Kconfig.soc
new file mode 100644
index 00000000000000..352b7048a30e5d
--- /dev/null
+++ b/soc/st/stm32/stm32l4/Kconfig.soc
@@ -0,0 +1,111 @@
+# ST Microelectronics STM32L4 MCU line
+
+# Copyright (c) 2016 Open-RnD Sp. z o.o.
+# Copyright (c) 2016 BayLibre, SAS
+# Copyright (c) 2019 Centaur Analytics, Inc
+# Copyright (c) 2019 STMicroelectronics
+# SPDX-License-Identifier: Apache-2.0
+
+config SOC_SERIES_STM32L4X
+	bool
+	select SOC_FAMILY_STM32
+
+config SOC_SERIES
+	default "stm32l4" if SOC_SERIES_STM32L4X
+
+config SOC_STM32L412XX
+	bool
+	select SOC_SERIES_STM32L4X
+
+config SOC_STM32L422XX
+	bool
+	select SOC_SERIES_STM32L4X
+
+config SOC_STM32L431XX
+	bool
+	select SOC_SERIES_STM32L4X
+
+config SOC_STM32L432XX
+	bool
+	select SOC_SERIES_STM32L4X
+
+config SOC_STM32L433XX
+	bool
+	select SOC_SERIES_STM32L4X
+
+config SOC_STM32L451XX
+	bool
+	select SOC_SERIES_STM32L4X
+
+config SOC_STM32L452XX
+	bool
+	select SOC_SERIES_STM32L4X
+
+config SOC_STM32L462XX
+	bool
+	select SOC_SERIES_STM32L4X
+
+config SOC_STM32L471XX
+	bool
+	select SOC_SERIES_STM32L4X
+
+config SOC_STM32L475XX
+	bool
+	select SOC_SERIES_STM32L4X
+
+config SOC_STM32L476XX
+	bool
+	select SOC_SERIES_STM32L4X
+
+config SOC_STM32L486XX
+	bool
+	select SOC_SERIES_STM32L4X
+
+config SOC_STM32L496XX
+	bool
+	select SOC_SERIES_STM32L4X
+
+config SOC_STM32L4A6XX
+	bool
+	select SOC_SERIES_STM32L4X
+
+config SOC_STM32L4P5XX
+	bool
+	select SOC_SERIES_STM32L4X
+
+config SOC_STM32L4Q5XX
+	bool
+	select SOC_SERIES_STM32L4X
+
+config SOC_STM32L4S5XX
+	bool
+	select SOC_SERIES_STM32L4X
+
+config SOC_STM32L4R5XX
+	bool
+	select SOC_SERIES_STM32L4X
+
+config SOC_STM32L4R9XX
+	bool
+	select SOC_SERIES_STM32L4X
+
+config SOC
+	default "stm32l412xx" if SOC_STM32L412XX
+	default "stm32l422xx" if SOC_STM32L422XX
+	default "stm32l431xx" if SOC_STM32L431XX
+	default "stm32l432xx" if SOC_STM32L432XX
+	default "stm32l433xx" if SOC_STM32L433XX
+	default "stm32l451xx" if SOC_STM32L451XX
+	default "stm32l452xx" if SOC_STM32L452XX
+	default "stm32l462xx" if SOC_STM32L462XX
+	default "stm32l471xx" if SOC_STM32L471XX
+	default "stm32l475xx" if SOC_STM32L475XX
+	default "stm32l476xx" if SOC_STM32L476XX
+	default "stm32l486xx" if SOC_STM32L486XX
+	default "stm32l496xx" if SOC_STM32L496XX
+	default "stm32l4a6xx" if SOC_STM32L4A6XX
+	default "stm32l4p5xx" if SOC_STM32L4P5XX
+	default "stm32l4q5xx" if SOC_STM32L4Q5XX
+	default "stm32l4s5xx" if SOC_STM32L4S5XX
+	default "stm32l4r5xx" if SOC_STM32L4R5XX
+	default "stm32l4r9xx" if SOC_STM32L4R9XX
diff --git a/soc/soc_legacy/arm/st_stm32/stm32l4/power.c b/soc/st/stm32/stm32l4/power.c
similarity index 100%
rename from soc/soc_legacy/arm/st_stm32/stm32l4/power.c
rename to soc/st/stm32/stm32l4/power.c
diff --git a/soc/soc_legacy/arm/st_stm32/stm32l4/poweroff.c b/soc/st/stm32/stm32l4/poweroff.c
similarity index 100%
rename from soc/soc_legacy/arm/st_stm32/stm32l4/poweroff.c
rename to soc/st/stm32/stm32l4/poweroff.c
diff --git a/soc/soc_legacy/arm/st_stm32/stm32l4/soc.c b/soc/st/stm32/stm32l4/soc.c
similarity index 100%
rename from soc/soc_legacy/arm/st_stm32/stm32l4/soc.c
rename to soc/st/stm32/stm32l4/soc.c
diff --git a/soc/soc_legacy/arm/st_stm32/stm32l4/soc.h b/soc/st/stm32/stm32l4/soc.h
similarity index 100%
rename from soc/soc_legacy/arm/st_stm32/stm32l4/soc.h
rename to soc/st/stm32/stm32l4/soc.h
diff --git a/tests/drivers/flash/stm32/testcase.yaml b/tests/drivers/flash/stm32/testcase.yaml
index f3346c96052e9a..fe13b3444fd4f2 100644
--- a/tests/drivers/flash/stm32/testcase.yaml
+++ b/tests/drivers/flash/stm32/testcase.yaml
@@ -14,7 +14,7 @@ tests:
             dt_label_with_parent_compat_enabled("storage_partition", "fixed-partitions")
   drivers.flash.stm32.l4:
     platform_allow:
-      - nucleo_l452re_p
+      - nucleo_l452re/stm32l452xx/p
       - disco_l475_iot1
     extra_configs:
       - CONFIG_FLASH_STM32_READOUT_PROTECTION=y