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[PATCH] ppc64: Fix recent regression 

As noted by Olof Johansson <olof@lixom.net>:

  "A recent patch changed the way the LPAR bit is checked during early
   boot.  This resulted in a polarity change in a conditional branch
   without changing the branch, causing at least some legacy machines to
   not boot."

This fixes it.

Signed-off-by: Jimi Xenidis <jimix@watson.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
hifive-unleashed-5.1
Jimi Xenidis 2005-09-15 08:42:19 -04:00 committed by Linus Torvalds
parent 0fb74dfb08
commit be201f7f4c
1 changed files with 3 additions and 3 deletions
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6
arch/ppc64/kernel/head.S
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@ -1649,7 +1649,7 @@ _GLOBAL(__secondary_start)
ld r3,0(r3)
lwz r3,PLATFORM(r3) /* r3 = platform flags */
andi. r3,r3,PLATFORM_LPAR /* Test if bit 0 is set (LPAR bit) */
bne 98f
beq 98f /* branch if result is 0 */
mfspr r3,PVR
srwi r3,r3,16
cmpwi r3,0x37 /* SStar */
@ -1813,7 +1813,7 @@ _STATIC(start_here_multiplatform)
ld r3,0(r3)
lwz r3,PLATFORM(r3) /* r3 = platform flags */
andi. r3,r3,PLATFORM_LPAR /* Test if bit 0 is set (LPAR bit) */
bne 98f
beq 98f /* branch if result is 0 */
mfspr r3,PVR
srwi r3,r3,16
cmpwi r3,0x37 /* SStar */
@ -1834,7 +1834,7 @@ _STATIC(start_here_multiplatform)
lwz r3,PLATFORM(r3) /* r3 = platform flags */
/* Test if bit 0 is set (LPAR bit) */
andi. r3,r3,PLATFORM_LPAR
bne 98f
bne 98f /* branch if result is !0 */
LOADADDR(r6,_SDR1) /* Only if NOT LPAR */
sub r6,r6,r26
ld r6,0(r6) /* get the value of _SDR1 */