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[POWERPC] Consolidate feature fixup code

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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>
This commit is contained in:
Benjamin Herrenschmidt
2006-10-24 16:42:40 +10:00
committed by Paul Mackerras
parent fb20f65a01
commit 42c4aaadb7
11 changed files with 106 additions and 300 deletions
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19
arch/powerpc/kernel/head_64.S
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@@ -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)