[POWERPC] Consolidate feature fixup code

There are currently two versions of the functions for applying the
feature fixups, one for CPU features and one for firmware features. In
addition, they are both in assembly and with separate implementations
for 32 and 64 bits. identify_cpu() is also implemented in assembly and
separately for 32 and 64 bits.

This patch replaces them with a pair of C functions. The call sites are
slightly moved on ppc64 as well to be called from C instead of from
assembly, though it's a very small change, and thus shouldn't cause any
problem.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 0 insertions, 19 deletions

diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S
index 645c7f10fb28..f12e3c55520d 100644
--- a/arch/powerpc/kernel/head_64.S
+++ b/arch/powerpc/kernel/head_64.S
@@ -1580,11 +1580,6 @@ _STATIC(__start_initialization_iSeries)
         li      r0,0
         stdu    r0,-STACK_FRAME_OVERHEAD(r1)
 
-        LOAD_REG_IMMEDIATE(r3,cpu_specs)
-        LOAD_REG_IMMEDIATE(r4,cur_cpu_spec)
-        li      r5,0
-        bl      .identify_cpu
-
         LOAD_REG_IMMEDIATE(r2,__toc_start)
         addi    r2,r2,0x4000
         addi    r2,r2,0x4000
@@ -1964,13 +1959,6 @@ _STATIC(start_here_multiplatform)
         addi    r2,r2,0x4000
         add     r2,r2,r26
 
-        LOAD_REG_IMMEDIATE(r3, cpu_specs)
-        add     r3,r3,r26
-        LOAD_REG_IMMEDIATE(r4,cur_cpu_spec)
-        add     r4,r4,r26
-        mr      r5,r26
-        bl      .identify_cpu
-
         /* Do very early kernel initializations, including initial hash table,
          * stab and slb setup before we turn on relocation.     */
 
@@ -2000,13 +1988,6 @@ _STATIC(start_here_common)
         li      r0,0
         stdu    r0,-STACK_FRAME_OVERHEAD(r1)
 
-        /* Apply the CPUs-specific fixups (nop out sections not relevant
-         * to this CPU
-         */
-        li      r3,0
-        bl      .do_cpu_ftr_fixups
-        bl      .do_fw_ftr_fixups
-
         /* ptr to current */
         LOAD_REG_IMMEDIATE(r4, init_task)
         std     r4,PACACURRENT(r13)