forked from M-Labs/zynq-rs
libboard_zynq::stdio: add drop_uart()
drops locks and causes reinitialization which is needed for exceptions and clock canges.
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@ -1,13 +1,17 @@
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use libboard_zynq::println;
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use libboard_zynq::{println, stdio};
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#[no_mangle]
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#[no_mangle]
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pub unsafe extern "C" fn PrefetchAbort() {
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pub unsafe extern "C" fn PrefetchAbort() {
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stdio::drop_uart();
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println!("PrefetchAbort");
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println!("PrefetchAbort");
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loop {}
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loop {}
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}
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}
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#[no_mangle]
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#[no_mangle]
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pub unsafe extern "C" fn DataAbort() {
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pub unsafe extern "C" fn DataAbort() {
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stdio::drop_uart();
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println!("DataAbort");
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println!("DataAbort");
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loop {}
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loop {}
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}
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}
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@ -10,6 +10,10 @@ pub fn get_uart<'a>() -> MutexGuard<'a, LazyUart> {
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unsafe { UART.lock() }
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unsafe { UART.lock() }
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}
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}
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pub fn drop_uart() {
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unsafe { UART = Mutex::new(LazyUart::Uninitialized); }
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}
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/// Initializes the UART on first use through `.deref_mut()` for debug
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/// Initializes the UART on first use through `.deref_mut()` for debug
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/// output through the `print!` and `println!` macros.
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/// output through the `print!` and `println!` macros.
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pub enum LazyUart {
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pub enum LazyUart {
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