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| author | Patrick Rudolph <[email protected]> | 2024-10-23 15:20:14 +0200 |
|---|---|---|
| committer | Tom Rini <[email protected]> | 2024-10-27 17:24:13 -0600 |
| commit | 92e02b01eceacb21c65c1aa07e3ca0695fdbaff7 (patch) | |
| tree | 227c87e026f569b6295786eaba481650c6cdb606 /drivers | |
| parent | 34bfe8eff895b864247d923ce37110a9053592ee (diff) | |
armv8: cpu: Enable ACPI parking protocol
Update the generic entry point code to support the ACPI parking protocol.
The ACPI parking protocol can be used when PSCI is not available to bring
up secondary CPU cores.
When enabled secondary CPUs will enter U-Boot proper and spin in their own
4KiB reserved memory page, which also acts as mailbox with the OS to
release the CPU.
TEST: Boots all CPUs on qemu-system-aarch64 -machine raspi4b
Signed-off-by: Patrick Rudolph <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
Diffstat (limited to 'drivers')
0 files changed, 0 insertions, 0 deletions