Thanks to visit codestin.com
Credit goes to github.com

Skip to content

boards: teensy: use start() #4060

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 1 commit into from
Jul 3, 2024
Merged

boards: teensy: use start() #4060

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
42 changes: 23 additions & 19 deletions boards/teensy40/src/main.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,8 @@
// SPDX-License-Identifier: Apache-2.0 OR MIT
// Copyright Tock Contributors 2022.

//! Teensy 4.0 Development Board
//!
//! System configuration
//!
//! - LED on pin 13
Expand Down Expand Up @@ -134,20 +136,6 @@ mod dma_config {
}
}

/// This is in a separate, inline(never) function so that its stack frame is
/// removed when this function returns. Otherwise, the stack space used for
/// these static_inits is wasted.
#[inline(never)]
unsafe fn create_peripherals() -> &'static mut imxrt1060::chip::Imxrt10xxDefaultPeripherals {
let ccm = static_init!(imxrt1060::ccm::Ccm, imxrt1060::ccm::Ccm::new());
let peripherals = static_init!(
imxrt1060::chip::Imxrt10xxDefaultPeripherals,
imxrt1060::chip::Imxrt10xxDefaultPeripherals::new(ccm)
);

peripherals
}

type Chip = imxrt1060::chip::Imxrt10xx<imxrt1060::chip::Imxrt10xxDefaultPeripherals>;
static mut CHIP: Option<&'static Chip> = None;
static mut PROCESS_PRINTER: Option<&'static capsules_system::process_printer::ProcessPrinterText> =
Expand Down Expand Up @@ -187,11 +175,19 @@ fn set_arm_clock(ccm: &imxrt1060::ccm::Ccm, ccm_analog: &imxrt1060::ccm_analog::
ccm.set_peripheral_clock_selection(PeripheralClockSelection::PrePeripheralClock);
}

#[no_mangle]
pub unsafe fn main() {
/// This is in a separate, inline(never) function so that its stack frame is
/// removed when this function returns. Otherwise, the stack space used for
/// these static_inits is wasted.
#[inline(never)]
unsafe fn start() -> (&'static kernel::Kernel, Teensy40, &'static Chip) {
imxrt1060::init();

let peripherals = create_peripherals();
let ccm = static_init!(imxrt1060::ccm::Ccm, imxrt1060::ccm::Ccm::new());
let peripherals = static_init!(
imxrt1060::chip::Imxrt10xxDefaultPeripherals,
imxrt1060::chip::Imxrt10xxDefaultPeripherals::new(ccm)
);

peripherals.ccm.set_low_power_mode();

peripherals.dcdc.clock().enable();
Expand Down Expand Up @@ -296,7 +292,6 @@ pub unsafe fn main() {
// Capabilities
//
let memory_allocation_capability = create_capability!(capabilities::MemoryAllocationCapability);
let main_loop_capability = create_capability!(capabilities::MainLoopCapability);
let process_management_capability =
create_capability!(capabilities::ProcessManagementCapability);

Expand Down Expand Up @@ -361,7 +356,16 @@ pub unsafe fn main() {
)
.unwrap();

board_kernel.kernel_loop(&teensy40, chip, Some(&teensy40.ipc), &main_loop_capability);
(board_kernel, teensy40, chip)
}

/// Main function called after RAM initialized.
#[no_mangle]
pub unsafe fn main() {
let main_loop_capability = create_capability!(capabilities::MainLoopCapability);

let (board_kernel, platform, chip) = start();
board_kernel.kernel_loop(&platform, chip, Some(&platform.ipc), &main_loop_capability);
}

/// Space for the stack buffer
Expand Down