Kernel minimization (#334)
* adds patch to remove unused kernel components * new boards, rebase patches to match * rename boards for deployment
This commit is contained in:
kaczmarczyck
GitHub
311
boards/nordic/nrf52840_dongle_opensk/src/main.rs
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311
boards/nordic/nrf52840_dongle_opensk/src/main.rs
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//! Tock kernel for the Nordic Semiconductor nRF52840 dongle.
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//!
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//! It is based on nRF52840 SoC (Cortex M4 core with a BLE transceiver) with
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//! many exported I/O and peripherals.
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#![no_std]
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// Disable this attribute when documenting, as a workaround for
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// https://github.com/rust-lang/rust/issues/62184.
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#![cfg_attr(not(doc), no_main)]
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#![feature(const_in_array_repeat_expressions)]
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#![deny(missing_docs)]
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use kernel::common::dynamic_deferred_call::{DynamicDeferredCall, DynamicDeferredCallClientState};
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use kernel::component::Component;
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#[allow(unused_imports)]
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use kernel::{capabilities, create_capability, debug, debug_gpio, debug_verbose, static_init};
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use nrf52840::gpio::Pin;
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use nrf52_components::{self, UartChannel, UartPins};
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// The nRF52840 Dongle LEDs
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const LED1_PIN: Pin = Pin::P0_06;
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const LED2_R_PIN: Pin = Pin::P0_08;
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const LED2_G_PIN: Pin = Pin::P1_09;
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const LED2_B_PIN: Pin = Pin::P0_12;
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// The nRF52840 Dongle button
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const BUTTON_PIN: Pin = Pin::P1_06;
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const BUTTON_RST_PIN: Pin = Pin::P0_18;
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const UART_RTS: Option<Pin> = Some(Pin::P0_13);
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const UART_TXD: Pin = Pin::P0_15;
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const UART_CTS: Option<Pin> = Some(Pin::P0_17);
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const UART_RXD: Pin = Pin::P0_20;
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// SPI pins not currently in use, but left here for convenience
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const _SPI_MOSI: Pin = Pin::P1_01;
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const _SPI_MISO: Pin = Pin::P1_02;
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const _SPI_CLK: Pin = Pin::P1_04;
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/// UART Writer
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pub mod io;
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// State for loading and holding applications.
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// How should the kernel respond when a process faults.
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const FAULT_RESPONSE: kernel::procs::FaultResponse = kernel::procs::FaultResponse::Panic;
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// Number of concurrent processes this platform supports.
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const NUM_PROCS: usize = 8;
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static mut PROCESSES: [Option<&'static dyn kernel::procs::ProcessType>; NUM_PROCS] =
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[None; NUM_PROCS];
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// Static reference to chip for panic dumps
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static mut CHIP: Option<&'static nrf52840::chip::Chip> = None;
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/// Dummy buffer that causes the linker to reserve enough space for the stack.
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#[no_mangle]
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#[link_section = ".stack_buffer"]
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pub static mut STACK_MEMORY: [u8; 0x1000] = [0; 0x1000];
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/// Supported drivers by the platform
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pub struct Platform {
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button: &'static capsules::button::Button<'static, nrf52840::gpio::GPIOPin<'static>>,
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pconsole: &'static capsules::process_console::ProcessConsole<
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'static,
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components::process_console::Capability,
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>,
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console: &'static capsules::console::Console<'static>,
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gpio: &'static capsules::gpio::GPIO<'static, nrf52840::gpio::GPIOPin<'static>>,
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led: &'static capsules::led::LED<'static, nrf52840::gpio::GPIOPin<'static>>,
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rng: &'static capsules::rng::RngDriver<'static>,
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ipc: kernel::ipc::IPC,
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analog_comparator: &'static capsules::analog_comparator::AnalogComparator<
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'static,
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nrf52840::acomp::Comparator<'static>,
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>,
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alarm: &'static capsules::alarm::AlarmDriver<
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'static,
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capsules::virtual_alarm::VirtualMuxAlarm<'static, nrf52840::rtc::Rtc<'static>>,
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>,
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}
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impl kernel::Platform for Platform {
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fn with_driver<F, R>(&self, driver_num: usize, f: F) -> R
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where
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F: FnOnce(Option<&dyn kernel::Driver>) -> R,
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{
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match driver_num {
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capsules::console::DRIVER_NUM => f(Some(self.console)),
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capsules::gpio::DRIVER_NUM => f(Some(self.gpio)),
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capsules::alarm::DRIVER_NUM => f(Some(self.alarm)),
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capsules::led::DRIVER_NUM => f(Some(self.led)),
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capsules::button::DRIVER_NUM => f(Some(self.button)),
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capsules::rng::DRIVER_NUM => f(Some(self.rng)),
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capsules::analog_comparator::DRIVER_NUM => f(Some(self.analog_comparator)),
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kernel::ipc::DRIVER_NUM => f(Some(&self.ipc)),
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_ => f(None),
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}
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}
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}
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/// Entry point in the vector table called on hard reset.
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#[no_mangle]
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pub unsafe fn reset_handler() {
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// Loads relocations and clears BSS
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nrf52840::init();
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let board_kernel = static_init!(kernel::Kernel, kernel::Kernel::new(&PROCESSES));
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// GPIOs
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let gpio = components::gpio::GpioComponent::new(
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board_kernel,
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components::gpio_component_helper!(
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nrf52840::gpio::GPIOPin,
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// left side of the USB plug
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0 => &nrf52840::gpio::PORT[Pin::P0_13],
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1 => &nrf52840::gpio::PORT[Pin::P0_15],
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2 => &nrf52840::gpio::PORT[Pin::P0_17],
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3 => &nrf52840::gpio::PORT[Pin::P0_20],
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4 => &nrf52840::gpio::PORT[Pin::P0_22],
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5 => &nrf52840::gpio::PORT[Pin::P0_24],
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6 => &nrf52840::gpio::PORT[Pin::P1_00],
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7 => &nrf52840::gpio::PORT[Pin::P0_09],
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8 => &nrf52840::gpio::PORT[Pin::P0_10],
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// right side of the USB plug
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9 => &nrf52840::gpio::PORT[Pin::P0_31],
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10 => &nrf52840::gpio::PORT[Pin::P0_29],
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11 => &nrf52840::gpio::PORT[Pin::P0_02],
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12 => &nrf52840::gpio::PORT[Pin::P1_15],
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13 => &nrf52840::gpio::PORT[Pin::P1_13],
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14 => &nrf52840::gpio::PORT[Pin::P1_10],
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// Below the PCB
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15 => &nrf52840::gpio::PORT[Pin::P0_26],
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16 => &nrf52840::gpio::PORT[Pin::P0_04],
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17 => &nrf52840::gpio::PORT[Pin::P0_11],
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18 => &nrf52840::gpio::PORT[Pin::P0_14],
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19 => &nrf52840::gpio::PORT[Pin::P1_11],
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20 => &nrf52840::gpio::PORT[Pin::P1_07],
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21 => &nrf52840::gpio::PORT[Pin::P1_01],
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22 => &nrf52840::gpio::PORT[Pin::P1_04],
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23 => &nrf52840::gpio::PORT[Pin::P1_02]
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),
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)
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.finalize(components::gpio_component_buf!(nrf52840::gpio::GPIOPin));
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let button = components::button::ButtonComponent::new(
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board_kernel,
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components::button_component_helper!(
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nrf52840::gpio::GPIOPin,
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(
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&nrf52840::gpio::PORT[BUTTON_PIN],
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kernel::hil::gpio::ActivationMode::ActiveLow,
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kernel::hil::gpio::FloatingState::PullUp
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)
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),
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)
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.finalize(components::button_component_buf!(nrf52840::gpio::GPIOPin));
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let led = components::led::LedsComponent::new(components::led_component_helper!(
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nrf52840::gpio::GPIOPin,
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(
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&nrf52840::gpio::PORT[LED1_PIN],
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kernel::hil::gpio::ActivationMode::ActiveLow
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),
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(
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&nrf52840::gpio::PORT[LED2_R_PIN],
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kernel::hil::gpio::ActivationMode::ActiveLow
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),
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(
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&nrf52840::gpio::PORT[LED2_G_PIN],
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kernel::hil::gpio::ActivationMode::ActiveLow
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),
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(
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&nrf52840::gpio::PORT[LED2_B_PIN],
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kernel::hil::gpio::ActivationMode::ActiveLow
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)
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))
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.finalize(components::led_component_buf!(nrf52840::gpio::GPIOPin));
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let chip = static_init!(nrf52840::chip::Chip, nrf52840::chip::new());
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CHIP = Some(chip);
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nrf52_components::startup::NrfStartupComponent::new(
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false,
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BUTTON_RST_PIN,
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nrf52840::uicr::Regulator0Output::V3_0,
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)
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.finalize(());
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// Create capabilities that the board needs to call certain protected kernel
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// functions.
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let process_management_capability =
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create_capability!(capabilities::ProcessManagementCapability);
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let main_loop_capability = create_capability!(capabilities::MainLoopCapability);
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let memory_allocation_capability = create_capability!(capabilities::MemoryAllocationCapability);
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let gpio_port = &nrf52840::gpio::PORT;
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// Configure kernel debug gpios as early as possible
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kernel::debug::assign_gpios(
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Some(&gpio_port[LED2_R_PIN]),
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Some(&gpio_port[LED2_G_PIN]),
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Some(&gpio_port[LED2_B_PIN]),
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);
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let rtc = &nrf52840::rtc::RTC;
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rtc.start();
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let mux_alarm = components::alarm::AlarmMuxComponent::new(rtc)
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.finalize(components::alarm_mux_component_helper!(nrf52840::rtc::Rtc));
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let alarm = components::alarm::AlarmDriverComponent::new(board_kernel, mux_alarm)
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.finalize(components::alarm_component_helper!(nrf52840::rtc::Rtc));
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let uart_channel = UartChannel::Pins(UartPins::new(UART_RTS, UART_TXD, UART_CTS, UART_RXD));
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let channel = nrf52_components::UartChannelComponent::new(uart_channel, mux_alarm).finalize(());
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let dynamic_deferred_call_clients =
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static_init!([DynamicDeferredCallClientState; 2], Default::default());
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let dynamic_deferred_caller = static_init!(
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DynamicDeferredCall,
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DynamicDeferredCall::new(dynamic_deferred_call_clients)
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);
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DynamicDeferredCall::set_global_instance(dynamic_deferred_caller);
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// Create a shared UART channel for the console and for kernel debug.
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let uart_mux =
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components::console::UartMuxComponent::new(channel, 115200, dynamic_deferred_caller)
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.finalize(());
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let pconsole =
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components::process_console::ProcessConsoleComponent::new(board_kernel, uart_mux)
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.finalize(());
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// Setup the console.
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let console = components::console::ConsoleComponent::new(board_kernel, uart_mux).finalize(());
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// Create the debugger object that handles calls to `debug!()`.
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components::debug_writer::DebugWriterComponent::new(uart_mux).finalize(());
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let rng = components::rng::RngComponent::new(board_kernel, &nrf52840::trng::TRNG).finalize(());
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// Initialize AC using AIN5 (P0.29) as VIN+ and VIN- as AIN0 (P0.02)
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// These are hardcoded pin assignments specified in the driver
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let analog_comparator = components::analog_comparator::AcComponent::new(
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&nrf52840::acomp::ACOMP,
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components::acomp_component_helper!(
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nrf52840::acomp::Channel,
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&nrf52840::acomp::CHANNEL_AC0
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),
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)
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.finalize(components::acomp_component_buf!(
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nrf52840::acomp::Comparator
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));
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nrf52_components::NrfClockComponent::new().finalize(());
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let platform = Platform {
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button,
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pconsole,
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console,
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led,
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gpio,
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rng,
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alarm,
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analog_comparator,
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ipc: kernel::ipc::IPC::new(board_kernel, &memory_allocation_capability),
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};
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platform.pconsole.start();
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debug!("Initialization complete. Entering main loop\r");
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debug!("{}", &nrf52840::ficr::FICR_INSTANCE);
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/// These symbols are defined in the linker script.
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extern "C" {
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/// Beginning of the ROM region containing app images.
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static _sapps: u8;
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/// End of the ROM region containing app images.
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static _eapps: u8;
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/// Beginning of the RAM region for app memory.
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static mut _sappmem: u8;
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/// End of the RAM region for app memory.
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static _eappmem: u8;
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}
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kernel::procs::load_processes(
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board_kernel,
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chip,
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core::slice::from_raw_parts(
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&_sapps as *const u8,
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&_eapps as *const u8 as usize - &_sapps as *const u8 as usize,
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),
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core::slice::from_raw_parts_mut(
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&mut _sappmem as *mut u8,
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&_eappmem as *const u8 as usize - &_sappmem as *const u8 as usize,
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),
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&mut PROCESSES,
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FAULT_RESPONSE,
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&process_management_capability,
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)
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.unwrap_or_else(|err| {
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debug!("Error loading processes!");
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debug!("{:?}", err);
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});
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let scheduler = components::sched::round_robin::RoundRobinComponent::new(&PROCESSES)
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.finalize(components::rr_component_helper!(NUM_PROCS));
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board_kernel.kernel_loop(
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&platform,
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chip,
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Some(&platform.ipc),
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scheduler,
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&main_loop_capability,
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);
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}
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