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authorTrent Piepho <tpiepho@freescale.com>2008-12-08 19:34:55 -0800
committerKumar Gala <galak@kernel.crashing.org>2009-01-07 15:33:06 -0600
commit19f5465e823858a2f0b0e9a92e52816ba3ee70bb (patch)
tree4e4112f7d8e5a3699df5e808a83ac9eed44bd8d7
parent565f37642c78754a85efe6c20a4a15e18ed21f07 (diff)
powerpc/fsl-booke: Don't hard-code size of struct tlbcam
Some assembly code in head_fsl_booke.S hard-coded the size of struct tlbcam to 20 when it indexed the TLBCAM table. Anyone changing the size of struct tlbcam would not know to expect that. The kernel already has a system to get the size of C structures into assembly language files, asm-offsets, so let's use it. The definition of the struct gets moved to a header, so that asm-offsets.c can include it. Signed-off-by: Trent Piepho <tpiepho@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
-rw-r--r--arch/powerpc/kernel/asm-offsets.c7
-rw-r--r--arch/powerpc/kernel/head_fsl_booke.S2
-rw-r--r--arch/powerpc/mm/fsl_booke_mmu.c8
-rw-r--r--arch/powerpc/mm/mmu_decl.h9
4 files changed, 18 insertions, 8 deletions
diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c
index 661d07d2146..06958da94f1 100644
--- a/arch/powerpc/kernel/asm-offsets.c
+++ b/arch/powerpc/kernel/asm-offsets.c
@@ -56,6 +56,10 @@
#include "head_booke.h"
#endif
+#if defined(CONFIG_FSL_BOOKE)
+#include "../mm/mmu_decl.h"
+#endif
+
int main(void)
{
DEFINE(THREAD, offsetof(struct task_struct, thread));
@@ -384,6 +388,9 @@ int main(void)
DEFINE(PGD_T_LOG2, PGD_T_LOG2);
DEFINE(PTE_T_LOG2, PTE_T_LOG2);
#endif
+#ifdef CONFIG_FSL_BOOKE
+ DEFINE(TLBCAM_SIZE, sizeof(struct tlbcam));
+#endif
return 0;
}
diff --git a/arch/powerpc/kernel/head_fsl_booke.S b/arch/powerpc/kernel/head_fsl_booke.S
index 11b549acc03..805f28d30e4 100644
--- a/arch/powerpc/kernel/head_fsl_booke.S
+++ b/arch/powerpc/kernel/head_fsl_booke.S
@@ -909,7 +909,7 @@ KernelSPE:
_GLOBAL(loadcam_entry)
lis r4,TLBCAM@ha
addi r4,r4,TLBCAM@l
- mulli r5,r3,20
+ mulli r5,r3,TLBCAM_SIZE
add r3,r5,r4
lwz r4,0(r3)
mtspr SPRN_MAS0,r4
diff --git a/arch/powerpc/mm/fsl_booke_mmu.c b/arch/powerpc/mm/fsl_booke_mmu.c
index 23cee39534f..c9ee59af100 100644
--- a/arch/powerpc/mm/fsl_booke_mmu.c
+++ b/arch/powerpc/mm/fsl_booke_mmu.c
@@ -61,13 +61,7 @@ static unsigned long __cam0, __cam1, __cam2;
#define NUM_TLBCAMS (16)
-struct tlbcam {
- u32 MAS0;
- u32 MAS1;
- u32 MAS2;
- u32 MAS3;
- u32 MAS7;
-} TLBCAM[NUM_TLBCAMS];
+struct tlbcam TLBCAM[NUM_TLBCAMS];
struct tlbcamrange {
unsigned long start;
diff --git a/arch/powerpc/mm/mmu_decl.h b/arch/powerpc/mm/mmu_decl.h
index 4314b39b6fa..6f6ee62c2a0 100644
--- a/arch/powerpc/mm/mmu_decl.h
+++ b/arch/powerpc/mm/mmu_decl.h
@@ -75,6 +75,15 @@ extern void _tlbia(void);
#endif /* CONFIG_PPC_MMU_NOHASH */
#ifdef CONFIG_PPC32
+
+struct tlbcam {
+ u32 MAS0;
+ u32 MAS1;
+ u32 MAS2;
+ u32 MAS3;
+ u32 MAS7;
+};
+
extern void mapin_ram(void);
extern int map_page(unsigned long va, phys_addr_t pa, int flags);
extern void setbat(int index, unsigned long virt, phys_addr_t phys,