Commit a304e2d82a8c3 ("ppc64: purgatory: Reset primary cpu endian to
big-endian) changed bctr to rfid. rfid is book3s-only and will cause a
fatal exception on book3e.
Purgatory is an isolated environment which makes importing information
about the subarch awkward, so instead rely on the fact that MSR_LE
should never be set on book3e, and the rfid is only needed if MSR_LE is
set (and thus needs to be cleared). In theory that MSR bit is reserved
on book3e, rather than zero, but in practice I have not seen it set.
Signed-off-by: Scott Wood <scottwood at freescale.com>
Cc: Samuel Mendoza-Jonas <sam.mj at au1.ibm.com>
---
v2: new patch
purgatory/arch/ppc64/v2wrap.S | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/purgatory/arch/ppc64/v2wrap.S b/purgatory/arch/ppc64/v2wrap.S
index 179ade9..3534080 100644
--- a/purgatory/arch/ppc64/v2wrap.S
+++ b/purgatory/arch/ppc64/v2wrap.S
@@ -116,9 +116,17 @@ master:
stw 7,0x5c(4) # and patch it into the kernel
mr 3,16 # restore dt address
+ mfmsr 5
+ andi. 10,5,1 # test MSR_LE
+ bne little_endian
+
+ li 5,0 # r5 will be 0 for kernel
+ mtctr 4 # prepare branch to
+ bctr # start kernel
+
+little_endian: # book3s-only
mtsrr0 4 # prepare branch to
- mfmsr 5
clrrdi 5,5,1 # clear MSR_LE
mtsrr1 5
--
2.1.4
