[PATCH] powerpc: Allow non zero boot cpuids

[deliverable/linux.git] / arch / powerpc / kernel / head_64.S

diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S
index 7e7f7d243304f5424ce17f44ed9cce38d3fbafbe..a5ae04a57c784371c57b1a1e0dcaa6ab20fdac7d 100644 (file)
--- a/arch/powerpc/kernel/head_64.S
+++ b/arch/powerpc/kernel/head_64.S
@@ -1851,21 +1851,6 @@ _STATIC(start_here_multiplatform)
        bl      .__save_cpu_setup
        sync
 
-       /* Setup a valid physical PACA pointer in SPRG3 for early_setup
-        * note that boot_cpuid can always be 0 nowadays since there is
-        * nowhere it can be initialized differently before we reach this
-        * code
-        */
-       LOAD_REG_IMMEDIATE(r27, boot_cpuid)
-       add     r27,r27,r26
-       lwz     r27,0(r27)
-
-       LOAD_REG_IMMEDIATE(r24, paca)   /* Get base vaddr of paca array  */
-       mulli   r13,r27,PACA_SIZE       /* Calculate vaddr of right paca */
-       add     r13,r13,r24             /* for this processor.           */
-       add     r13,r13,r26             /* convert to physical addr      */
-       mtspr   SPRN_SPRG3,r13
-       
        /* Do very early kernel initializations, including initial hash table,
         * stab and slb setup before we turn on relocation.     */
 
@@ -1934,6 +1919,17 @@ _STATIC(start_here_common)
        /* Not reached */
        BUG_OPCODE
 
+/* Put the paca pointer into r13 and SPRG3 */
+_GLOBAL(setup_boot_paca)
+       LOAD_REG_IMMEDIATE(r3, boot_cpuid)
+       lwz     r3,0(r3)
+       LOAD_REG_IMMEDIATE(r4, paca)    /* Get base vaddr of paca array  */
+       mulli   r3,r3,PACA_SIZE         /* Calculate vaddr of right paca */
+       add     r13,r3,r4               /* for this processor.           */
+       mtspr   SPRN_SPRG3,r13
+
+       blr
+
 /*
  * We put a few things here that have to be page-aligned.
  * This stuff goes at the beginning of the bss, which is page-aligned.