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AlessandroLuokartben
AlessandroLuo
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kartben
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boards: Add support for the Ambiq Apollo510 EVB board
This commit adds support for the Ambiq Apollo510 Evaluation Board. Signed-off-by: Hao Luo <hluo@ambiq.com>
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‎boards/ambiq/apollo510_evb/CMakeLists.txt

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# SPDX-License-Identifier: Apache-2.0
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zephyr_library()
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zephyr_library_sources(board.c)

‎boards/ambiq/apollo510_evb/Kconfig

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# SPDX-License-Identifier: Apache-2.0
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#
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# Copyright (c) 2025 Ambiq Micro Inc. <www.ambiq.com>
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config BOARD_APOLLO510_EVB
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select BOARD_EARLY_INIT_HOOK

‎boards/ambiq/apollo510_evb/Kconfig.apollo510_evb

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# SPDX-License-Identifier: Apache-2.0
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#
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# Copyright (c) 2025 Ambiq Micro Inc. <www.ambiq.com>
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config BOARD_APOLLO510_EVB
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select SOC_APOLLO510

‎boards/ambiq/apollo510_evb/Kconfig.defconfig

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# SPDX-License-Identifier: Apache-2.0
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#
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# Copyright (c) 2025 Ambiq Micro Inc.
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if BOARD_APOLLO510_EVB
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config SYS_CLOCK_HW_CYCLES_PER_SEC
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default 32768 if AMBIQ_STIMER_TIMER
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default 96000000 if CORTEX_M_SYSTICK
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config LOG_BACKEND_SWO_FREQ_HZ
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default 1000000
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depends on LOG_BACKEND_SWO
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endif # BOARD_APOLLO510_EVB

‎boards/ambiq/apollo510_evb/apollo510_evb-pinctrl.dtsi

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/*
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* Copyright (c) 2025 Ambiq Micro Inc.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <apollo510/ambiq-apollo510-pinmux.h>
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&pinctrl {
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uart0_default: uart0_default {
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group1 {
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pinmux = <UART0TX_P30>;
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};
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group2 {
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pinmux = <UART0RX_P55>;
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input-enable;
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};
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};
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swo_default: swo_default {
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group0 {
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pinmux = <SWO_P28>;
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};
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};
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};

‎boards/ambiq/apollo510_evb/apollo510_evb.dts

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/dts-v1/;
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#include <ambiq/ambiq_apollo510.dtsi>
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#include "apollo510_evb-pinctrl.dtsi"
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#include <zephyr/dt-bindings/input/input-event-codes.h>
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/ {
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model = "Ambiq Apollo510 evaluation board";
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compatible = "ambiq,apollo510_evb";
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chosen {
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zephyr,itcm = &itcm;
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zephyr,dtcm = &dtcm;
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zephyr,sram = &sram0;
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zephyr,flash = &flash0;
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zephyr,console = &uart0;
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zephyr,shell-uart = &uart0;
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zephyr,uart-pipe = &uart0;
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ambiq,xo32m = &xo32m_xtal;
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ambiq,xo32k = &xo32k_xtal;
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ambiq,extrefclk = &extrefclk;
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};
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aliases {
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watchdog0 = &wdt0;
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led0 = &led0;
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led1 = &led1;
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led2 = &led2;
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sw0 = &button0;
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sw1 = &button1;
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};
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sram0: memory@SSRAM_BASE_NAME {
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compatible = "mmio-sram";
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reg = <SSRAM_BASE_ADDR 0x200000>;
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};
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sram_no_cache: memory@20280000 {
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compatible = "zephyr,memory-region", "mmio-sram";
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reg = <0x20280000 0x100000>;
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zephyr,memory-region = "SRAM_NO_CACHE";
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zephyr,memory-attr = <( DT_MEM_ARM(ATTR_MPU_RAM_NOCACHE) )>;
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};
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leds {
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compatible = "gpio-leds";
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led0: led_0 {
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gpios = <&gpio160_191 5 GPIO_ACTIVE_LOW>;
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label = "LED 0";
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};
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led1: led_1 {
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gpios = <&gpio64_95 25 GPIO_ACTIVE_LOW>;
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label = "LED 1";
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};
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led2: led_2 {
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gpios = <&gpio64_95 28 GPIO_ACTIVE_LOW>;
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label = "LED 2";
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};
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};
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buttons {
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compatible = "gpio-keys";
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polling-mode;
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button0: button_0 {
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gpios = <&gpio64_95 29 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
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label = "BTN0";
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zephyr,code = <INPUT_KEY_0>;
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status = "okay";
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};
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button1: button_1 {
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gpios = <&gpio64_95 30 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
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label = "BTN1";
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zephyr,code = <INPUT_KEY_1>;
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status = "okay";
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};
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};
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};
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&xo32m_xtal {
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clock-frequency = <DT_FREQ_M(48)>;
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};
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&itm {
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pinctrl-0 = <&swo_default>;
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pinctrl-names = "default";
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};
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&uart0 {
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current-speed = <115200>;
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pinctrl-0 = <&uart0_default>;
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pinctrl-names = "default";
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status = "okay";
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};
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&stimer0 {
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clk-source = <3>;
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};
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&wdt0 {
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status = "okay";
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};
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&gpio0_31 {
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status = "okay";
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};
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&gpio32_63 {
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status = "okay";
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};
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&gpio64_95 {
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status = "okay";
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};
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&gpio96_127 {
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status = "okay";
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};
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&gpio128_159 {
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status = "okay";
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};
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&gpio160_191 {
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status = "okay";
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};
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&gpio192_223 {
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status = "okay";
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};

‎boards/ambiq/apollo510_evb/apollo510_evb.yaml

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identifier: apollo510_evb
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name: Apollo510 EVB
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type: mcu
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arch: arm
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ram: 3072
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flash: 4096
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toolchain:
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- zephyr
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- gnuarmemb
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supported:
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- uart
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- watchdog
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- gpio
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- clock_control
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testing:
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ignore_tags:
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- net
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- bluetooth
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vendor: ambiq

‎boards/ambiq/apollo510_evb/apollo510_evb_defconfig

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# SPDX-License-Identifier: Apache-2.0
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#
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# Copyright (c) 2025 Ambiq Micro Inc.
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CONFIG_CONSOLE=y
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CONFIG_UART_CONSOLE=y
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CONFIG_SERIAL=y
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CONFIG_UART_INTERRUPT_DRIVEN=y
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CONFIG_HW_STACK_PROTECTION=y
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CONFIG_ARM_MPU=y
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CONFIG_PM=y
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CONFIG_PM_DEVICE=y
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CONFIG_PM_DEVICE_RUNTIME=y

‎boards/ambiq/apollo510_evb/board.c

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/*
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* Copyright 2025 Ambiq Micro Inc.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <zephyr/init.h>
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#include <zephyr/kernel.h>
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#include <am_mcu_apollo.h>
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#if DT_HAS_CHOSEN(ambiq_xo32m)
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#define XTAL_HS_FREQ DT_PROP(DT_CHOSEN(ambiq_xo32m), clock_frequency)
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#if DT_SAME_NODE(DT_CHOSEN(ambiq_xo32m), DT_NODELABEL(xo32m_xtal))
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#define XTAL_HS_MODE AM_HAL_CLKMGR_XTAL_HS_MODE_XTAL
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#elif DT_SAME_NODE(DT_CHOSEN(ambiq_xo32m), DT_NODELABEL(xo32m_ext))
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#define XTAL_HS_MODE AM_HAL_CLKMGR_XTAL_HS_MODE_EXT
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#endif
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#else
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#define XTAL_HS_FREQ 0
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#define XTAL_HS_MODE AM_HAL_CLKMGR_XTAL_HS_MODE_XTAL
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#endif
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#if DT_HAS_CHOSEN(ambiq_xo32k)
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#define XTAL_LS_FREQ DT_PROP(DT_CHOSEN(ambiq_xo32k), clock_frequency)
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#if DT_SAME_NODE(DT_CHOSEN(ambiq_xo32k), DT_NODELABEL(xo32k_xtal))
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#define XTAL_LS_MODE AM_HAL_CLKMGR_XTAL_LS_MODE_XTAL
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#elif DT_SAME_NODE(DT_CHOSEN(ambiq_xo32k), DT_NODELABEL(xo32k_ext))
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#define XTAL_LS_MODE AM_HAL_CLKMGR_XTAL_LS_MODE_EXT
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#endif
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#else
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#define XTAL_LS_FREQ 0
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#define XTAL_LS_MODE AM_HAL_CLKMGR_XTAL_LS_MODE_XTAL
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#endif
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#if DT_HAS_CHOSEN(ambiq_extrefclk)
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#define EXTREFCLK_FREQ DT_PROP(DT_CHOSEN(ambiq_extrefclk), clock_frequency)
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#else
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#define EXTREFCLK_FREQ 0
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#endif
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void board_early_init_hook(void)
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{
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/* Set board related info into clock manager */
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am_hal_clkmgr_board_info_t sClkmgrBoardInfo = {.sXtalHs.eXtalHsMode = XTAL_HS_MODE,
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.sXtalHs.ui32XtalHsFreq = XTAL_HS_FREQ,
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.sXtalLs.eXtalLsMode = XTAL_LS_MODE,
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.sXtalLs.ui32XtalLsFreq = XTAL_LS_FREQ,
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.ui32ExtRefClkFreq = EXTREFCLK_FREQ};
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am_hal_clkmgr_board_info_set(&sClkmgrBoardInfo);
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/* Default HFRC and HFRC2 to Free Running clocks */
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am_hal_clkmgr_clock_config(AM_HAL_CLKMGR_CLK_ID_HFRC,
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AM_HAL_CLKMGR_HFRC_FREQ_FREE_RUN_APPROX_48MHZ, NULL);
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am_hal_clkmgr_clock_config(AM_HAL_CLKMGR_CLK_ID_HFRC2,
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AM_HAL_CLKMGR_HFRC2_FREQ_FREE_RUN_APPROX_250MHZ, NULL);
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}

‎boards/ambiq/apollo510_evb/board.cmake

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# Copyright (c) 2025 Ambiq Micro Inc.
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# SPDX-License-Identifier: Apache-2.0
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board_runner_args(jlink "--device=AP510NFA-CBR" "--iface=swd" "--speed=1000")
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include(${ZEPHYR_BASE}/boards/common/jlink.board.cmake)

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