| if ARM64 |
| |
| config ARMV8_MULTIENTRY |
| bool "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 |