tree aece224f682c4aeb57729b9a2866bed79ccaa823
parent b5667d13be8d0928a02b46e0c6f7ab891d32f697
author Hari Bathini <hbathini@linux.ibm.com> 1596023046 +0530
committer Michael Ellerman <mpe@ellerman.id.au> 1596030475 +1000

powerpc/kexec_file: Enable early kernel OPAL calls

Kernels built with CONFIG_PPC_EARLY_DEBUG_OPAL enabled expects r8 & r9
to be filled with OPAL base & entry addresses respectively. Setting
these registers allows the kernel to perform OPAL calls before the
device tree is parsed.

Signed-off-by: Hari Bathini <hbathini@linux.ibm.com>
Reviewed-by: Thiago Jung Bauermann <bauerman@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/159602303975.575379.5032301944162937479.stgit@hbathini