1 files changed, 33 insertions, 8 deletions

diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S
index 8a8bf79ef044..1c066d125375 100644
--- a/arch/powerpc/kernel/head_64.S
+++ b/arch/powerpc/kernel/head_64.S
@@ -154,11 +154,15 @@ _GLOBAL(__secondary_hold)
         bne     100b
 
 #ifdef CONFIG_HMT
-        b       .hmt_init
+        LOADADDR(r4, .hmt_init)
+        mtctr   r4
+        bctr
 #else
 #ifdef CONFIG_SMP
+        LOADADDR(r4, .pSeries_secondary_smp_init)
+        mtctr   r4
         mr      r3,r24
-        b       .pSeries_secondary_smp_init
+        bctr
 #else
         BUG_OPCODE
 #endif
@@ -200,6 +204,20 @@ exception_marker:
 #define EX_R3           64
 #define EX_LR           72
 
+/*
+ * We're short on space and time in the exception prolog, so we can't use
+ * the normal LOADADDR macro. Normally we just need the low halfword of the
+ * address, but for Kdump we need the whole low word.
+ */
+#ifdef CONFIG_CRASH_DUMP
+#define LOAD_HANDLER(reg, label)                                        \
+        oris    reg,reg,(label)@h;      /* virt addr of handler ... */  \
+        ori     reg,reg,(label)@l;      /* .. and the rest */
+#else
+#define LOAD_HANDLER(reg, label)                                        \
+        ori     reg,reg,(label)@l;      /* virt addr of handler ... */
+#endif
+
 #define EXCEPTION_PROLOG_PSERIES(area, label)                           \
         mfspr   r13,SPRN_SPRG3;         /* get paca address into r13 */ \
         std     r9,area+EX_R9(r13);     /* save r9 - r12 */             \
@@ -212,7 +230,7 @@ exception_marker:
         clrrdi  r12,r13,32;             /* get high part of &label */   \
         mfmsr   r10;                                                    \
         mfspr   r11,SPRN_SRR0;          /* save SRR0 */                 \
-        ori     r12,r12,(label)@l;      /* virt addr of handler */      \
+        LOAD_HANDLER(r12,label)                                         \
         ori     r10,r10,MSR_IR|MSR_DR|MSR_RI;                           \
         mtspr   SPRN_SRR0,r12;                                          \
         mfspr   r12,SPRN_SRR1;          /* and SRR1 */                  \
@@ -553,6 +571,7 @@ slb_miss_user_pseries:
  * Vectors for the FWNMI option.  Share common code.
  */
         .globl system_reset_fwnmi
+      .align 7
 system_reset_fwnmi:
         HMT_MEDIUM
         mtspr   SPRN_SPRG1,r13          /* save r13 */
@@ -560,6 +579,7 @@ system_reset_fwnmi:
         EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, system_reset_common)
 
         .globl machine_check_fwnmi
+      .align 7
 machine_check_fwnmi:
         HMT_MEDIUM
         mtspr   SPRN_SPRG1,r13          /* save r13 */
@@ -726,7 +746,8 @@ iSeries_secondary_smp_loop:
 decrementer_iSeries_masked:
         li      r11,1
         stb     r11,PACALPPACA+LPPACADECRINT(r13)
-        lwz     r12,PACADEFAULTDECR(r13)
+        LOADBASE(r12,tb_ticks_per_jiffy)
+        lwz     r12,OFF(tb_ticks_per_jiffy)(r12)
         mtspr   SPRN_DEC,r12
         /* fall through */
 
@@ -1345,7 +1366,7 @@ _GLOBAL(do_stab_bolted)
  * fixed address (the linker can't compute (u64)&initial_stab >>
  * PAGE_SHIFT).
  */
-        . = STAB0_PHYS_ADDR     /* 0x6000 */
+        . = STAB0_OFFSET        /* 0x6000 */
         .globl initial_stab
 initial_stab:
         .space  4096
@@ -1485,11 +1506,13 @@ _STATIC(__mmu_off)
  *
  */
 _GLOBAL(__start_initialization_multiplatform)
+#ifdef CONFIG_PPC_MULTIPLATFORM
         /*
          * Are we booted from a PROM Of-type client-interface ?
          */
         cmpldi  cr0,r5,0
         bne     .__boot_from_prom               /* yes -> prom */
+#endif
 
         /* Save parameters */
         mr      r31,r3
@@ -1510,6 +1533,7 @@ _GLOBAL(__start_initialization_multiplatform)
         bl      .__mmu_off
         b       .__after_prom_start
 
+#ifdef CONFIG_PPC_MULTIPLATFORM
 _STATIC(__boot_from_prom)
         /* Save parameters */
         mr      r31,r3
@@ -1542,6 +1566,7 @@ _STATIC(__boot_from_prom)
         bl      .prom_init
         /* We never return */
         trap
+#endif
 
 /*
  * At this point, r3 contains the physical address we are running at,
@@ -1550,7 +1575,7 @@ _STATIC(__boot_from_prom)
 _STATIC(__after_prom_start)
 
 /*
- * We need to run with __start at physical address 0.
+ * We need to run with __start at physical address PHYSICAL_START.
  * This will leave some code in the first 256B of
  * real memory, which are reserved for software use.
  * The remainder of the first page is loaded with the fixed
@@ -1565,7 +1590,7 @@ _STATIC(__after_prom_start)
         mr      r26,r3
         SET_REG_TO_CONST(r27,KERNELBASE)
 
-        li      r3,0                    /* target addr */
+        LOADADDR(r3, PHYSICAL_START)    /* target addr */
 
         // XXX FIXME: Use phys returned by OF (r30)
         add     r4,r27,r26              /* source addr                   */
@@ -1846,7 +1871,7 @@ _STATIC(start_here_multiplatform)
         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          /* PPPBBB: Temp... -Peter */
+        mtspr   SPRN_SPRG3,r13
         
         /* Do very early kernel initializations, including initial hash table,
          * stab and slb setup before we turn on relocation.     */