[PATCH] powerpc: merge code values for identifying platforms

[linux-2.6-omap-h63xx.git] / arch / powerpc / kernel / head_64.S

diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S
index 16ab40daa73852b1f8665888edc882cd69d6997b..8a8bf79ef0449605fa6ea36152f927d6de854e57 100644 (file)
--- a/arch/powerpc/kernel/head_64.S
+++ b/arch/powerpc/kernel/head_64.S
@@ -28,7 +28,6 @@
 #include <asm/reg.h>
 #include <asm/page.h>
 #include <asm/mmu.h>
-#include <asm/systemcfg.h>
 #include <asm/ppc_asm.h>
 #include <asm/asm-offsets.h>
 #include <asm/bug.h>
@@ -1697,25 +1696,14 @@ _GLOBAL(pmac_secondary_start)
  *   SPRG3 = paca virtual address
  */
 _GLOBAL(__secondary_start)
+       /* Set thread priority to MEDIUM */
+       HMT_MEDIUM
 
-       HMT_MEDIUM                      /* Set thread priority to MEDIUM */
-
+       /* Load TOC */
        ld      r2,PACATOC(r13)
-       li      r6,0
-       stb     r6,PACAPROCENABLED(r13)
-
-#ifndef CONFIG_PPC_ISERIES
-       /* Initialize the page table pointer register. */
-       LOADADDR(r6,_SDR1)
-       ld      r6,0(r6)                /* get the value of _SDR1        */
-       mtspr   SPRN_SDR1,r6                    /* set the htab location         */
-#endif
-       /* Initialize the first segment table (or SLB) entry             */
-       ld      r3,PACASTABVIRT(r13)    /* get addr of segment table     */
-BEGIN_FTR_SECTION
-       bl      .stab_initialize
-END_FTR_SECTION_IFCLR(CPU_FTR_SLB)
-       bl      .slb_initialize
+
+       /* Do early setup for that CPU (stab, slb, hash table pointer) */
+       bl      .early_setup_secondary
 
        /* Initialize the kernel stack.  Just a repeat for iSeries.      */
        LOADADDR(r3,current_set)
@@ -1724,37 +1712,7 @@ END_FTR_SECTION_IFCLR(CPU_FTR_SLB)
        addi    r1,r1,THREAD_SIZE-STACK_FRAME_OVERHEAD
        std     r1,PACAKSAVE(r13)
 
-       ld      r3,PACASTABREAL(r13)    /* get raddr of segment table    */
-       ori     r4,r3,1                 /* turn on valid bit             */
-
-#ifdef CONFIG_PPC_ISERIES
-       li      r0,-1                   /* hypervisor call */
-       li      r3,1
-       sldi    r3,r3,63                /* 0x8000000000000000 */
-       ori     r3,r3,4                 /* 0x8000000000000004 */
-       sc                              /* HvCall_setASR */
-#else
-       /* set the ASR */
-       ld      r3,systemcfg@got(r2)    /* r3 = ptr to systemcfg         */
-       ld      r3,0(r3)
-       lwz     r3,PLATFORM(r3)         /* r3 = platform flags           */
-       andi.   r3,r3,PLATFORM_LPAR     /* Test if bit 0 is set (LPAR bit) */
-       beq     98f                     /* branch if result is 0  */
-       mfspr   r3,SPRN_PVR
-       srwi    r3,r3,16
-       cmpwi   r3,0x37                 /* SStar  */
-       beq     97f
-       cmpwi   r3,0x36                 /* IStar  */
-       beq     97f
-       cmpwi   r3,0x34                 /* Pulsar */
-       bne     98f
-97:    li      r3,H_SET_ASR            /* hcall = H_SET_ASR */
-       HVSC                            /* Invoking hcall */
-       b       99f
-98:                                    /* !(rpa hypervisor) || !(star)  */
-       mtasr   r4                      /* set the stab location         */
-99:
-#endif
+       /* Clear backchain so we get nice backtraces */
        li      r7,0
        mtlr    r7
 
@@ -1777,6 +1735,7 @@ _GLOBAL(start_secondary_prolog)
        li      r3,0
        std     r3,0(r1)                /* Zero the stack frame pointer */
        bl      .start_secondary
+       b       .
 #endif
 
 /*
@@ -1896,40 +1855,6 @@ _STATIC(start_here_multiplatform)
        mr      r3,r31
        bl      .early_setup
 
-       /* set the ASR */
-       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 */
-       andi.   r3,r3,PLATFORM_LPAR     /* Test if bit 0 is set (LPAR bit) */
-       beq     98f                     /* branch if result is 0  */
-       mfspr   r3,SPRN_PVR
-       srwi    r3,r3,16
-       cmpwi   r3,0x37                 /* SStar */
-       beq     97f
-       cmpwi   r3,0x36                 /* IStar  */
-       beq     97f
-       cmpwi   r3,0x34                 /* Pulsar */
-       bne     98f
-97:    li      r3,H_SET_ASR            /* hcall = H_SET_ASR */
-       HVSC                            /* Invoking hcall */
-       b       99f
-98:                                    /* !(rpa hypervisor) || !(star) */
-       mtasr   r4                      /* set the stab location        */
-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,PLATFORM_LPAR
-       bne     98f                     /* branch if result is !0  */
-       LOADADDR(r6,_SDR1)              /* Only if NOT LPAR */
-       add     r6,r6,r26
-       ld      r6,0(r6)                /* get the value of _SDR1 */
-       mtspr   SPRN_SDR1,r6                    /* set the htab location  */
-98: 
        LOADADDR(r3,.start_here_common)
        SET_REG_TO_CONST(r4, MSR_KERNEL)
        mtspr   SPRN_SRR0,r3