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| author | AKASHI Takahiro <takahiro.akashi@linaro.org> | 2018-11-15 08:52:52 +0300 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2018-12-06 17:38:53 +0300 |
| commit | 4c9e7e649a3f291e1b939299458e6844c16afe70 (patch) | |
| tree | 446f0a65db719795d0c0eb5c6a5757fb73151e34 /arch/arm64/kernel/relocate_kernel.S | |
| parent | f3b70e50942960ecc691367bb937e35cdc5e28d3 (diff) | |
| download | linux-4c9e7e649a3f291e1b939299458e6844c16afe70.tar.xz | |
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/relocate_kernel.S')
| -rw-r--r-- | arch/arm64/kernel/relocate_kernel.S | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm64/kernel/relocate_kernel.S b/arch/arm64/kernel/relocate_kernel.S index f407e422a720..95fd94209aae 100644 --- a/arch/arm64/kernel/relocate_kernel.S +++ b/arch/arm64/kernel/relocate_kernel.S @@ -32,6 +32,7 @@ ENTRY(arm64_relocate_new_kernel) /* Setup the list loop variables. */ + mov x18, x2 /* x18 = dtb address */ mov x17, x1 /* x17 = kimage_start */ mov x16, x0 /* x16 = kimage_head */ raw_dcache_line_size x15, x0 /* x15 = dcache line size */ @@ -107,7 +108,7 @@ ENTRY(arm64_relocate_new_kernel) isb /* Start new image. */ - mov x0, xzr + mov x0, x18 mov x1, xzr mov x2, xzr mov x3, xzr |