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Kernel minimization (#334)

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* adds patch to remove unused kernel components

* new boards, rebase patches to match

* rename boards for deployment
This commit is contained in:
kaczmarczyck
2021-06-28 14:55:20 +02:00
committed by GitHub
parent 5f20ba544b
commit ce0ee6c054
32 changed files with 1234 additions and 155 deletions
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65
boards/nordic/nrf52840_dongle_opensk/src/io.rs Normal file
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use core::fmt::Write;
use core::panic::PanicInfo;
use cortexm4;
use kernel::debug;
use kernel::debug::IoWrite;
use kernel::hil::led;
use kernel::hil::uart::{self, Configure};
use nrf52840::gpio::Pin;
use crate::CHIP;
use crate::PROCESSES;
struct Writer {
initialized: bool,
}
static mut WRITER: Writer = Writer { initialized: false };
impl Write for Writer {
fn write_str(&mut self, s: &str) -> ::core::fmt::Result {
self.write(s.as_bytes());
Ok(())
}
}
impl IoWrite for Writer {
fn write(&mut self, buf: &[u8]) {
let uart = unsafe { &mut nrf52840::uart::UARTE0 };
if !self.initialized {
self.initialized = true;
uart.configure(uart::Parameters {
baud_rate: 115200,
stop_bits: uart::StopBits::One,
parity: uart::Parity::None,
hw_flow_control: false,
width: uart::Width::Eight,
});
}
for &c in buf {
unsafe {
uart.send_byte(c);
}
while !uart.tx_ready() {}
}
}
}
#[cfg(not(test))]
#[no_mangle]
#[panic_handler]
/// Panic handler
pub unsafe extern "C" fn panic_fmt(pi: &PanicInfo) -> ! {
// The nRF52840 Dongle LEDs (see back of board)
const LED1_PIN: Pin = Pin::P0_06;
let led = &mut led::LedLow::new(&mut nrf52840::gpio::PORT[LED1_PIN]);
let writer = &mut WRITER;
debug::panic(
&mut [led],
writer,
pi,
&cortexm4::support::nop,
&PROCESSES,
&CHIP,
)
}

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