[PATCH] ppc64: systemcfg is now a pointer

The following patch fixes 2 issues:
  1) use PLATFORM_LPAR bit to test if running in LPAR mode
  2) systemcfg pointer is assigned from static data in
     arch/ppc64/kernel/pacaData.c.  The file arch/ppc64/kernel/head.S
     now refers to is using the GOT binding to the pointer and hence
     must deref it.

Signed-off-by: Jimi Xenidis <jimix@watson.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

diff --git a/arch/ppc64/kernel/head.S b/arch/ppc64/kernel/head.S
index 0369597..b436206 100644 (file)
--- a/arch/ppc64/kernel/head.S
+++ b/arch/ppc64/kernel/head.S
@@ -1646,8 +1646,9 @@ _GLOBAL(__secondary_start)
 #else
        /* set the ASR */
        ld      r3,systemcfg@got(r2)    /* r3 = ptr to systemcfg         */
+       ld      r3,0(r3)
        lwz     r3,PLATFORM(r3)         /* r3 = platform flags           */
-       cmpldi  r3,PLATFORM_PSERIES_LPAR
+       andi.   r3,r3,PLATFORM_LPAR     /* Test if bit 0 is set (LPAR bit) */
        bne     98f
        mfspr   r3,PVR
        srwi    r3,r3,16
@@ -1809,8 +1810,9 @@ _STATIC(start_here_multiplatform)
        ld      r3,PACASTABREAL(r13)
        ori     r4,r3,1                 /* turn on valid bit             */
        ld      r3,systemcfg@got(r2)    /* r3 = ptr to systemcfg */
+       ld      r3,0(r3)
        lwz     r3,PLATFORM(r3)         /* r3 = platform flags */
-       cmpldi  r3,PLATFORM_PSERIES_LPAR
+       andi.   r3,r3,PLATFORM_LPAR     /* Test if bit 0 is set (LPAR bit) */
        bne     98f
        mfspr   r3,PVR
        srwi    r3,r3,16
@@ -1828,9 +1830,10 @@ _STATIC(start_here_multiplatform)
 99:
        /* Set SDR1 (hash table pointer) */
        ld      r3,systemcfg@got(r2)    /* r3 = ptr to systemcfg */
+       ld      r3,0(r3)
        lwz     r3,PLATFORM(r3)         /* r3 = platform flags */
        /* Test if bit 0 is set (LPAR bit) */
-       andi.   r3,r3,0x1
+       andi.   r3,r3,PLATFORM_LPAR
        bne     98f
        LOADADDR(r6,_SDR1)              /* Only if NOT LPAR */
        sub     r6,r6,r26