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if ARM64
config ARMV8_MULTIENTRY
boolean "Enable multiple CPUs to enter into U-Boot"
config ARMV8_SPIN_TABLE
bool "Support spin-table enable method"
depends on ARMV8_MULTIENTRY && OF_LIBFDT
help
Say Y here to support "spin-table" enable method for booting Linux.
To use this feature, you must do:
- Specify enable-method = "spin-table" in each CPU node in the
Device Tree you are using to boot the kernel
- Let secondary CPUs in U-Boot (in a board specific manner)
before the master CPU jumps to the kernel
U-Boot automatically does:
- Set "cpu-release-addr" property of each CPU node
(overwrites it if already exists).
- Reserve the code for the spin-table and the release address
via a /memreserve/ region in the Device Tree.
endif
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