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MPFS boot enhancements #14994

Merged
merged 2 commits into from
Nov 29, 2024
Merged

MPFS boot enhancements #14994

merged 2 commits into from
Nov 29, 2024

Commits on Nov 29, 2024

  1. risc-v/mpfs: introduce CONFIG_MPFS_CLKINIT flag 

    This CONFIG_MPFS_CLKINIT is set with bootloaders by default. However,
this gives an option to have it unset. In some cases, the clocks
may be already set so it becomes unnecessary to re-initialize them.

Signed-off-by: Eero Nurkkala <[email protected]>
    @eenurkka
    eenurkka committed Nov 29, 2024
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  2. risc-v/mpfs: clear IPIs at boot 

    Inter-processor interrupts (IPIs) are not cleared via mie/mip registers but
rather, at the MPFS_CLINT_BASE + mhartid * 4 (a word or 4-byte offset for
each hart).

If there's an IPI waiting, the system will continue to boot altough it's
expected to stay at the wfi loop waiting for the IPI.

Signed-off-by: Eero Nurkkala <[email protected]>
    @eenurkka
    eenurkka committed Nov 29, 2024
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    34f8599 View commit details
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