212 lines
6.0 KiB
C
212 lines
6.0 KiB
C
/*
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* Copyright (c) 2012-2014 Wind River Systems, Inc.
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* Copyright (c) 2020 Arm Limited
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* Copyright (c) 2021-2023 Nordic Semiconductor ASA
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <assert.h>
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#include <zephyr/kernel.h>
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#include <zephyr/devicetree.h>
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#include <zephyr/drivers/gpio.h>
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#include <zephyr/sys/__assert.h>
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#include <zephyr/drivers/flash.h>
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#include <zephyr/drivers/timer/system_timer.h>
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#include <zephyr/usb/usb_device.h>
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#include <soc.h>
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#include <zephyr/linker/linker-defs.h>
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#include "target.h"
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#include "bootutil/bootutil_log.h"
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#if defined(CONFIG_BOOT_SERIAL_PIN_RESET) || defined(CONFIG_BOOT_FIRMWARE_LOADER_PIN_RESET)
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#include <zephyr/drivers/hwinfo.h>
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#endif
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#if defined(CONFIG_BOOT_SERIAL_BOOT_MODE) || defined(CONFIG_BOOT_FIRMWARE_LOADER_BOOT_MODE)
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#include <zephyr/retention/bootmode.h>
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#endif
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/* Validate serial recovery configuration */
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#ifdef CONFIG_MCUBOOT_SERIAL
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#if !defined(CONFIG_BOOT_SERIAL_ENTRANCE_GPIO) && \
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!defined(CONFIG_BOOT_SERIAL_WAIT_FOR_DFU) && \
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!defined(CONFIG_BOOT_SERIAL_BOOT_MODE) && \
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!defined(CONFIG_BOOT_SERIAL_NO_APPLICATION) && \
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!defined(CONFIG_BOOT_SERIAL_PIN_RESET)
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#error "Serial recovery selected without an entrance mode set"
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#endif
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#endif
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/* Validate firmware loader configuration */
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#ifdef CONFIG_BOOT_FIRMWARE_LOADER
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#if !defined(CONFIG_BOOT_FIRMWARE_LOADER_ENTRANCE_GPIO) && \
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!defined(CONFIG_BOOT_FIRMWARE_LOADER_BOOT_MODE) && \
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!defined(CONFIG_BOOT_FIRMWARE_LOADER_NO_APPLICATION) && \
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!defined(CONFIG_BOOT_FIRMWARE_LOADER_PIN_RESET)
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#error "Firmware loader selected without an entrance mode set"
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#endif
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#endif
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#ifdef CONFIG_MCUBOOT_INDICATION_LED
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/*
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* The led0 devicetree alias is optional. If present, we'll use it
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* to turn on the LED whenever the button is pressed.
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*/
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#if DT_NODE_EXISTS(DT_ALIAS(mcuboot_led0))
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#define LED0_NODE DT_ALIAS(mcuboot_led0)
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#elif DT_NODE_EXISTS(DT_ALIAS(bootloader_led0))
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#warning "bootloader-led0 alias is deprecated; use mcuboot-led0 instead"
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#define LED0_NODE DT_ALIAS(bootloader_led0)
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#endif
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#if DT_NODE_HAS_STATUS(LED0_NODE, okay) && DT_NODE_HAS_PROP(LED0_NODE, gpios)
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static const struct gpio_dt_spec led0 = GPIO_DT_SPEC_GET(LED0_NODE, gpios);
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#else
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/* A build error here means your board isn't set up to drive an LED. */
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#error "Unsupported board: led0 devicetree alias is not defined"
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#endif
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BOOT_LOG_MODULE_DECLARE(mcuboot);
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void io_led_init(void)
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{
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if (!device_is_ready(led0.port)) {
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BOOT_LOG_ERR("Didn't find LED device referred by the LED0_NODE\n");
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return;
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}
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gpio_pin_configure_dt(&led0, GPIO_OUTPUT);
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gpio_pin_set_dt(&led0, 0);
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}
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void io_led_set(int value)
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{
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gpio_pin_set_dt(&led0, value);
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}
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#endif /* CONFIG_MCUBOOT_INDICATION_LED */
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#if defined(CONFIG_BOOT_SERIAL_ENTRANCE_GPIO) || defined(CONFIG_BOOT_USB_DFU_GPIO) || \
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defined(CONFIG_BOOT_FIRMWARE_LOADER_ENTRANCE_GPIO)
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#if defined(CONFIG_MCUBOOT_SERIAL)
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#define BUTTON_0_DETECT_DELAY CONFIG_BOOT_SERIAL_DETECT_DELAY
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#elif defined(CONFIG_BOOT_FIRMWARE_LOADER)
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#define BUTTON_0_DETECT_DELAY CONFIG_BOOT_FIRMWARE_LOADER_DETECT_DELAY
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#else
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#define BUTTON_0_DETECT_DELAY CONFIG_BOOT_USB_DFU_DETECT_DELAY
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#endif
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#define BUTTON_0_NODE DT_ALIAS(mcuboot_button0)
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#if DT_NODE_EXISTS(BUTTON_0_NODE) && DT_NODE_HAS_PROP(BUTTON_0_NODE, gpios)
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static const struct gpio_dt_spec button0 = GPIO_DT_SPEC_GET(BUTTON_0_NODE, gpios);
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#else
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#error "Serial recovery/USB DFU button must be declared in device tree as 'mcuboot_button0'"
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#endif
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bool io_detect_pin(void)
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{
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int rc;
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int pin_active;
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if (!device_is_ready(button0.port)) {
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__ASSERT(false, "GPIO device is not ready.\n");
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return false;
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}
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rc = gpio_pin_configure_dt(&button0, GPIO_INPUT);
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__ASSERT(rc == 0, "Failed to initialize boot detect pin.\n");
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rc = gpio_pin_get_dt(&button0);
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pin_active = rc;
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__ASSERT(rc >= 0, "Failed to read boot detect pin.\n");
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if (pin_active) {
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if (BUTTON_0_DETECT_DELAY > 0) {
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#ifdef CONFIG_MULTITHREADING
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k_sleep(K_MSEC(50));
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#else
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k_busy_wait(50000);
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#endif
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/* Get the uptime for debounce purposes. */
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int64_t timestamp = k_uptime_get();
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for(;;) {
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rc = gpio_pin_get_dt(&button0);
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pin_active = rc;
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__ASSERT(rc >= 0, "Failed to read boot detect pin.\n");
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/* Get delta from when this started */
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uint32_t delta = k_uptime_get() - timestamp;
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/* If not pressed OR if pressed > debounce period, stop. */
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if (delta >= BUTTON_0_DETECT_DELAY || !pin_active) {
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break;
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}
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/* Delay 1 ms */
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#ifdef CONFIG_MULTITHREADING
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k_sleep(K_MSEC(1));
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#else
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k_busy_wait(1000);
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#endif
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}
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}
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}
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return (bool)pin_active;
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}
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#endif
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#if defined(CONFIG_BOOT_SERIAL_PIN_RESET) || defined(CONFIG_BOOT_FIRMWARE_LOADER_PIN_RESET)
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bool io_detect_pin_reset(void)
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{
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uint32_t reset_cause;
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int rc;
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rc = hwinfo_get_reset_cause(&reset_cause);
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if (rc == 0 && reset_cause == RESET_PIN) {
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(void)hwinfo_clear_reset_cause();
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return true;
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}
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return false;
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}
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#endif
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#if defined(CONFIG_BOOT_SERIAL_BOOT_MODE) || defined(CONFIG_BOOT_FIRMWARE_LOADER_BOOT_MODE)
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bool io_detect_boot_mode(void)
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{
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int32_t boot_mode;
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boot_mode = bootmode_check(BOOT_MODE_TYPE_BOOTLOADER);
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if (boot_mode == 1) {
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/* Boot mode to stay in bootloader, clear status and enter serial
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* recovery mode
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*/
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bootmode_clear();
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return true;
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}
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return false;
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}
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#endif
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