@@ -837,7 +837,7 @@ enter_nap:
.balign 0x10
.global opal_entry
opal_entry:
- OPAL_ENTRY_TO_SKIBOOT_ENDIAN
+ OPAL_ENTRY_TO_SKIBOOT_ENDIAN /* This clobbers r11, r12 */
/* Get our per CPU pointer in r12 to check for quiesce */
mfspr %r12,SPR_PIR
@@ -28,16 +28,17 @@
/* Load an address via the TOC */
#define LOAD_ADDR_FROM_TOC(r, e) ld r,e@got(%r2)
-/* This must preserve LR, so can't use Linux kernel's FIXUP_ENDIAN */
+/* This must preserve LR, may only clobber r11-r12, so can't use Linux kernel's
+ * FIXUP_ENDIAN */
#define SWITCH_ENDIAN \
.long 0xa600607d; /* mfmsr r11 */ \
.long 0x01006b69; /* xori r11,r11,1 */ \
.long 0xa64b7b7d; /* mthsrr1 r11 */ \
.long 0xa602687d; /* mflr r11 */ \
.long 0x05009f42; /* bcl 20,31,$+4 */ \
- .long 0xa602487d; /* mflr r10 */ \
- .long 0x14004a39; /* addi r10,r10,20 */ \
- .long 0xa64b5a7d; /* mthsrr0 r10 */ \
+ .long 0xa602887d; /* mflr r12 */ \
+ .long 0x14008c39; /* addi r12,r12,20 */ \
+ .long 0xa64b9a7d; /* mthsrr0 r12 */ \
.long 0xa603687d; /* mtlr r11 */ \
.long 0x2402004c /* hrfid */
Fortunately no OPAL calls seem to use 8 arguments yet. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> --- asm/head.S | 2 +- include/asm-utils.h | 9 +++++---- 2 files changed, 6 insertions(+), 5 deletions(-)