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zynq-rs
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libsupport: fixed core1 restart. 

The TRM mentioned that user should stop the clock, de-assert the reset,
and then restart the clock for core reset.

This fixes the kernel restart problem in one of the zc706 board.
This commit is contained in:
pca006132 2020-07-07 10:17:15 +08:00
parent e4e7141bf3
commit e67efe439b
1 changed files with 2 additions and 0 deletions
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2
libsupport_zynq/src/boot.rs
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@ -158,7 +158,9 @@ impl Core1 {
pub fn restart(&self) { pub fn restart(&self) {
slcr::RegisterBlock::unlocked(|slcr| { slcr::RegisterBlock::unlocked(|slcr| {
slcr.a9_cpu_rst_ctrl.modify(|_, w| w.a9_rst1(true)); slcr.a9_cpu_rst_ctrl.modify(|_, w| w.a9_rst1(true));
slcr.a9_cpu_rst_ctrl.modify(|_, w| w.a9_clkstop1(true));
slcr.a9_cpu_rst_ctrl.modify(|_, w| w.a9_rst1(false)); slcr.a9_cpu_rst_ctrl.modify(|_, w| w.a9_rst1(false));
slcr.a9_cpu_rst_ctrl.modify(|_, w| w.a9_clkstop1(false));
}); });
} }
} }