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powerpc/fsl-booke: Remove num_tlbcam_entries

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This is a global variable defined in fsl_booke_mmu.c with a value that gets
initialized in assembly code in head_fsl_booke.S.

It's never used.

If some code ever does want to know the number of entries in TLB1, then
"numcams = mfspr(SPRN_TLB1CFG) & 0xfff", is a whole lot simpler than a
global initialized during kernel boot from assembly.

Signed-off-by: Trent Piepho <tpiepho@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Trent Piepho
2008-12-08 19:34:56 -08:00
committed by Kumar Gala
parent 19f5465e82
commit 6fd8be4bf7
3 changed files with 0 additions and 7 deletions
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4
arch/powerpc/kernel/head_fsl_booke.S
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@@ -389,10 +389,6 @@ skpinv: addi r6,r6,1 /* Increment */
#endif #endif
#endif #endif
mfspr r3,SPRN_TLB1CFG
andi. r3,r3,0xfff
lis r4,num_tlbcam_entries@ha
stw r3,num_tlbcam_entries@l(r4)
/* /*
* Decide what sort of machine this is and initialize the MMU. * Decide what sort of machine this is and initialize the MMU.
*/ */

1
arch/powerpc/mm/fsl_booke_mmu.c
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@@ -56,7 +56,6 @@
extern void loadcam_entry(unsigned int index); extern void loadcam_entry(unsigned int index);
unsigned int tlbcam_index; unsigned int tlbcam_index;
unsigned int num_tlbcam_entries;
static unsigned long __cam0, __cam1, __cam2; static unsigned long __cam0, __cam1, __cam2;
#define NUM_TLBCAMS (16) #define NUM_TLBCAMS (16)

2
arch/powerpc/mm/mmu_decl.h
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@@ -99,8 +99,6 @@ extern unsigned int rtas_data, rtas_size;
struct hash_pte; struct hash_pte;
extern struct hash_pte *Hash, *Hash_end; extern struct hash_pte *Hash, *Hash_end;
extern unsigned long Hash_size, Hash_mask; extern unsigned long Hash_size, Hash_mask;
extern unsigned int num_tlbcam_entries;
#endif #endif
extern unsigned long ioremap_bot; extern unsigned long ioremap_bot;