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| author | AKASHI Takahiro <takahiro.akashi@linaro.org> | 2018-11-15 14:52:52 +0900 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2018-12-06 14:38:53 +0000 |
| commit | 4c9e7e649a3f291e1b939299458e6844c16afe70 (patch) | |
| tree | 446f0a65db719795d0c0eb5c6a5757fb73151e34 /arch/arm64/kernel/cpu-reset.S | |
| parent | f3b70e50942960ecc691367bb937e35cdc5e28d3 (diff) | |
| download | linux-4c9e7e649a3f291e1b939299458e6844c16afe70.tar.bz2 | |
arm64: kexec_file: invoke the kernel without purgatory
On arm64, purgatory would do almost nothing. So just invoke secondary
kernel directly by jumping into its entry code.
While, in this case, cpu_soft_restart() must be called with dtb address
in the fifth argument, the behavior still stays compatible with kexec_load
case as long as the argument is null.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: James Morse <james.morse@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/kernel/cpu-reset.S')
| -rw-r--r-- | arch/arm64/kernel/cpu-reset.S | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/arm64/kernel/cpu-reset.S b/arch/arm64/kernel/cpu-reset.S index 8021b46c9743..a2be30275a73 100644 --- a/arch/arm64/kernel/cpu-reset.S +++ b/arch/arm64/kernel/cpu-reset.S @@ -22,11 +22,11 @@ * __cpu_soft_restart(el2_switch, entry, arg0, arg1, arg2) - Helper for * cpu_soft_restart. * - * @el2_switch: Flag to indicate a swich to EL2 is needed. + * @el2_switch: Flag to indicate a switch to EL2 is needed. * @entry: Location to jump to for soft reset. - * arg0: First argument passed to @entry. - * arg1: Second argument passed to @entry. - * arg2: Third argument passed to @entry. + * arg0: First argument passed to @entry. (relocation list) + * arg1: Second argument passed to @entry.(physical kernel entry) + * arg2: Third argument passed to @entry. (physical dtb address) * * Put the CPU into the same state as it would be if it had been reset, and * branch to what would be the reset vector. It must be executed with the |