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Oops, masked the wakeup-on-halt request path when I masked IRQs on WFI state.

This commit is contained in:
Luke Wren 2022-08-29 16:14:42 +01:00
parent 099f0467fb
commit 6abd93eb49
1 changed files with 5 additions and 2 deletions
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7
hdl/hazard3_csr.v
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@ -1423,8 +1423,11 @@ wire irq_active = |(mip & mie) && mstatus_mie && !dcsr_step;
// WFI clear respects individual interrupt enables but ignores mstatus.mie.
// Additionally, wfi is treated as a nop during single-stepping and D-mode.
// Note that the IRQs and debug halt request input registers are clocked by
// clk_always_on, so that a wakeup can be generated when asleep.
assign pwr_wfi_wakeup_req = |(mip & mie) || dcsr_step || debug_mode || want_halt_irq_if_no_exception;
// clk_always_on, so that a wakeup can be generated when asleep. Note also
// that want_halt_irq_if_no_exception can be masked while asleep, so also
// feed in the raw halt request as a wakeup source.
assign pwr_wfi_wakeup_req = |(mip & mie) || dcsr_step || debug_mode ||
want_halt_irq_if_no_exception || dbg_req_halt_prev;
// Priority order from priv spec: external > software > timer
wire [3:0] standard_irq_num =