Add UF2 support

CMakeLists.txt

@@ -1452,7 +1452,7 @@ if(CONFIG_BUILD_OUTPUT_BIN AND CONFIG_BUILD_OUTPUT_UF2)
  COMMAND ${PYTHON_EXECUTABLE} ${ZEPHYR_BASE}/scripts/uf2conv.py
  -c
  -f ${CONFIG_BUILD_OUTPUT_UF2_FAMILY_ID}
- -b ${CONFIG_FLASH_LOAD_OFFSET}
+ -b ${CONFIG_BUILD_OUTPUT_UF2_OFFSET}
  -o ${KERNEL_UF2_NAME}
  ${KERNEL_BIN_NAME}
  )

CODEOWNERS

@@ -46,6 +46,7 @@
 /soc/arm/nuvoton_npcx/ @MulinChao @WealianLiao @ChiHuaL
 /soc/arm/nuvoton_numicro/ @ssekar15
 /soc/arm/quicklogic_eos_s3/ @kowalewskijan @kgugala
+/soc/arm/raspberrypi/ @yonsch
 /soc/arm/silabs_exx32/efm32pg1b/ @rdmeneze
 /soc/arm/silabs_exx32/efr32mg21/ @l-alfred
 /soc/arm/st_stm32/ @erwango
@@ -124,6 +125,7 @@
 /boards/arm/quick_feather/ @kowalewskijan @kgugala
 /boards/arm/rak4631_nrf52840/ @gpaquet85
 /boards/arm/rak5010_nrf52840/ @gpaquet85
+/boards/arm/raspberrypi_pico/ @yonsch
 /boards/arm/ronoth_lodev/ @NorthernDean
 /boards/arm/xmc45_relax_kit/ @parthitce
 /boards/arm/sam4e_xpro/ @nandojve
@@ -253,6 +255,7 @@
 /drivers/gpio/*eos_s3* @wtatarski @kowalewskijan @kgugala
 /drivers/gpio/*rcar* @julien-massot
 /drivers/gpio/*esp32* @glaubermaroto
+/drivers/gpio/*rpi_pico* @yonsch
 /drivers/hwinfo/ @alexanderwachter
 /drivers/i2c/i2c_common.c @sjg20
 /drivers/i2c/i2c_emul.c @sjg20
@@ -333,6 +336,7 @@
 /drivers/serial/uart_mcux_iuart.c @Mani-Sadhasivam
 /drivers/serial/Kconfig.rtt @carlescufi @pkral78
 /drivers/serial/uart_rtt.c @carlescufi @pkral78
+/drivers/serial/*rpi_pico* @yonsch
 /drivers/serial/Kconfig.xlnx @wjliang
 /drivers/serial/uart_xlnx_ps.c @wjliang
 /drivers/serial/uart_xlnx_uartlite.c @henrikbrixandersen
@@ -420,6 +424,7 @@
 /dts/arm/nuvoton/ @ssekar15 @MulinChao @WealianLiao @ChiHuaL
 /dts/arm/nxp/ @mmahadevan108 @dleach02
 /dts/arm/microchip/ @franciscomunoz @albertofloyd @scottwcpg
+/dts/arm/raspberrypi/ @yonsch
 /dts/arm/silabs/efm32_pg_1b.dtsi @rdmeneze
 /dts/arm/silabs/efm32gg11b* @oanerer
 /dts/arm/silabs/efm32_jg_pg* @chrta
@@ -461,6 +466,7 @@
 /dts/bindings/*/nordic* @anangl
 /dts/bindings/*/nxp* @mmahadevan108 @dleach02
 /dts/bindings/*/openisa* @dleach02
+/dts/bindings/*/raspberrypi* @yonsch
 /dts/bindings/*/st* @erwango
 /dts/bindings/sensor/ams* @alexanderwachter
 /dts/bindings/*/sifive* @mateusz-holenko @kgugala @pgielda

Kconfig.zephyr

@@ -462,6 +462,7 @@ config BUILD_OUTPUT_UF2_FAMILY_ID
 default "0xada52840" if SOC_NRF52840_QIAA
 default "0x4fb2d5bd" if SOC_SERIES_IMX_RT
 default "0x2abc77ec" if SOC_SERIES_LPC55XXX
+default "0xe48bff56" if SOC_SERIES_RP2XXX
 default "0x68ed2b88" if SOC_SERIES_SAMD21
 default "0x55114460" if SOC_SERIES_SAMD51
 default "0x647824b6" if SOC_SERIES_STM32F0X
@@ -486,6 +487,11 @@ config BUILD_OUTPUT_UF2_FAMILY_ID
  name string. If the SoC in use is known by UF2, the Family ID will
  be pre-filled with the known value.
 
+config BUILD_OUTPUT_UF2_OFFSET
+hex "UF2 Offset"
+default 0x10000000 if SOC_SERIES_RP2XXX
+default FLASH_LOAD_OFFSET if HAS_FLASH_LOAD_OFFSET
+
 endif # BUILD_OUTPUT_UF2
 
 config BUILD_OUTPUT_STRIPPED

boards/arm/adafruit_kb2040/Kconfig.board

@@ -0,0 +1,6 @@
+# Copyright (c) 2021 Pete Johanson
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_ADAFRUIT_KB2040
+bool "Adafruit KB2040 Board"
+depends on SOC_RP2040

boards/arm/adafruit_kb2040/Kconfig.defconfig

@@ -0,0 +1,12 @@
+# Copyright (c) 2021 Pete Johanson
+# SPDX-License-Identifier: Apache-2.0
+
+if BOARD_ADAFRUIT_KB2040
+
+config BOARD
+default "adafruit_kb2040"
+
+config RP2_FLASH_W25Q080
+default y
+
+endif # BOARD_ADAFRUIT_KB2040

boards/arm/adafruit_kb2040/adafruit_kb2040-pinctrl.dtsi

@@ -0,0 +1,18 @@
+/*
+ * Copyright (c) 2021, Yonatan Schachter
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <dt-bindings/pinctrl/rp2040-pinctrl.h>
+
+&pinctrl {
+uart1_default: uart1_default {
+group1 {
+pinmux = <UART1_TX_P20>;
+};
+group2 {
+pinmux = <UART1_RX_P5>;
+input-enable;
+};
+};
+};

boards/arm/adafruit_kb2040/adafruit_kb2040.dts

@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2021 Yonatan Schachter
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/dts-v1/;
+
+#include <raspberrypi/rp2040.dtsi>
+#include "adafruit_kb2040-pinctrl.dtsi"
+#include "sparkfun_pro_micro.dtsi"
+
+/ {
+chosen {
+zephyr,sram = &sram0;
+zephyr,flash = &flash0;
+zephyr,console = &uart1;
+zephyr,code-partition = &code_partition;
+};
+};
+
+&flash0 {
+/* 8MB of flash minus the 0x100 used for
+ * the second stage bootloader
+ */
+reg = <0x10000100 (DT_SIZE_M(8) - 0x100)>;
+
+partitions {
+compatible = "fixed-partitions";
+#address-cells = <1>;
+#size-cells = <1>;
+
+/*
+ * Start at the beginning of usable flash, 8MB minus the
+ * second stage space and the 16 KiB reserved for settings
+ */
+code_partition: partition@0 {
+label = "code";
+reg = <0 ((DT_SIZE_M(8) - 0x100) - DT_SIZE_K(16))>;
+read-only;
+};
+
+/*
+ * The final 16 KiB is reserved for the application.
+ * Storage partition may be used by FCB or LittleFS.
+ */
+storage_partition: partition@7fbe00 {
+label = "storage";
+reg = <0x007fbe00 DT_SIZE_K(16)>;
+};
+};
+};
+
+&uart1 {
+current-speed = <115200>;
+status = "okay";
+pinctrl-0 = <&uart1_default>;
+pinctrl-names = "default";
+};
+
+&gpio0 {
+status = "okay";
+};
+
+&usbd {
+status = "okay";
+};

boards/arm/adafruit_kb2040/adafruit_kb2040.yaml

@@ -0,0 +1,12 @@
+identifier: raspberrypi_pico
+name: RaspberryPi-Pico
+type: mcu
+arch: arm
+flash: 2048
+ram: 264
+toolchain:
+ - zephyr
+ - gnuarmemb
+ - xtools
+supported:
+ - serial

boards/arm/adafruit_kb2040/adafruit_kb2040_defconfig

@@ -0,0 +1,23 @@
+# SPDX-License-Identifier: Apache-2.0
+
+CONFIG_SOC_SERIES_RP2XXX=y
+CONFIG_SOC_RP2040=y
+CONFIG_BOARD_ADAFRUIT_KB2040=y
+
+CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=240000000
+
+# Enable GPIO
+CONFIG_GPIO=y
+
+# enable uart driver
+CONFIG_SERIAL=y
+
+# enable console
+CONFIG_CONSOLE=y
+CONFIG_UART_CONSOLE=y
+
+# Code partition needed to target the correct flash range
+CONFIG_USE_DT_CODE_PARTITION=y
+
+# Output UF2 by default, native bootloader supports it.
+CONFIG_BUILD_OUTPUT_UF2=y

boards/arm/adafruit_kb2040/sparkfun_pro_micro.dtsi

@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2020 Pete Johanson
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+/ {
+pro_micro: connector {
+compatible = "sparkfun,pro-micro";
+#gpio-cells = <2>;
+gpio-map-mask = <0xffffffff 0xffffffc0>;
+gpio-map-pass-thru = <0 0x3f>;
+gpio-map
+= <0 0 &gpio0 0 0>	/* D0 */
+, <1 0 &gpio0 1 0>	/* D1 */
+, <2 0 &gpio0 2 0>	/* D2 */
+, <3 0 &gpio0 3 0>	/* D3 */
+, <4 0 &gpio0 4 0>	/* D4/A6 */
+, <5 0 &gpio0 5 0>	/* D5 */
+, <6 0 &gpio0 6 0>	/* D6/A7 */
+, <7 0 &gpio0 7 0>	/* D7 */
+, <8 0 &gpio0 8 0>	/* D8/A8 */
+, <9 0 &gpio0 9 0>	/* D9/A9 */
+, <10 0 &gpio0 10 0>	/* D10/A10 */
+, <16 0 &gpio0 19 0>	/* D16 */
+, <14 0 &gpio0 20 0>	/* D14 */
+, <15 0 &gpio0 18 0>	/* D15 */
+, <18 0 &gpio0 26 0>	/* D18/A0 */
+, <19 0 &gpio0 27 0>	/* D19/A1 */
+, <20 0 &gpio0 28 0>	/* D20/A2 */
+, <21 0 &gpio0 29 0>	/* D21/A3 */
+;
+};
+
+};
+
+// pro_micro_i2c: &i2c0 {};
+// pro_micro_spi: &spi0 {};
+pro_micro_serial: &uart0 {};

boards/arm/raspberrypi_pico/Kconfig.board

@@ -0,0 +1,6 @@
+# Copyright (c) 2021 Yonatan Schachter
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_RPI_PICO
+bool "Raspberry Pi Pico Board"
+depends on SOC_RP2040

boards/arm/raspberrypi_pico/Kconfig.defconfig

@@ -0,0 +1,12 @@
+# Copyright (c) 2021 Yonatan Schachter
+# SPDX-License-Identifier: Apache-2.0
+
+if BOARD_RPI_PICO
+
+config BOARD
+default "raspberrypi_pico"
+
+config RP2_FLASH_W25Q080
+default y
+
+endif # BOARD_RPI_PICO

boards/arm/raspberrypi_pico/doc/index.rst

@@ -0,0 +1,51 @@
+.. _raspberrypi_pico:
+
+Raspberry Pi Pico
+#################
+
+Overview
+********
+
+The Raspberry Pi Pico is a small, low-cost, versatile board from
+Raspberry Pi. It is equipped with an RP2040 SoC, an on-board LED,
+a USB connector, and an SWD interface. The USB bootloader allows it
+to be flashed without any adapter, in a drag-and-drop manner.
+It is also possible to flash and debug the Pico with its SWD interface,
+using an external adapter.
+
+Hardware
+********
+- Dual core Arm Cortex-M0+ processor running up to 133MHz
+- 264KB on-chip SRAM
+- 2MB on-board QSPI flash with XIP capabilities
+- 26 GPIO pins
+- 3 Analog inputs
+- 2 UART peripherals
+- 2 SPI controllers
+- 2 I2C controllers
+- 16 PWM channels
+- USB 1.1 controller (host/device)
+- 8 Programmable I/O (PIO) for custom peripherals
+- On-board LED
+
+
+.. figure:: img/raspberrypi_pico.png
+ :width: 150px
+ :align: center
+ :alt: Raspberry Pi Pico
+
+ Raspberry Pi Pico (Image courtesy of Raspberry Pi)
+
+Supported Features
+==================
+
+The raspberrypi_pico board configuration supports the following
+hardware features:
+
++-----------+------------+----------------------+
+| Interface | Controller | Driver/Component |
++===========+============+======================+
+| UART | on-chip | serial port |
++-----------+------------+----------------------+
+| GPIO | on-chip | GPIO driver |
++-----------+------------+----------------------+

boards/arm/raspberrypi_pico/raspberrypi_pico-pinctrl.dtsi

@@ -0,0 +1,18 @@
+/*
+ * Copyright (c) 2021, Yonatan Schachter
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <dt-bindings/pinctrl/rp2040-pinctrl.h>
+
+&pinctrl {
+uart0_default: uart0_default {
+group1 {
+pinmux = <UART0_TX_P0>;
+};
+group2 {
+pinmux = <UART0_RX_P1>;
+input-enable;
+};
+};
+};