[U-Boot] [PATCH V2 05/10] mpc85xx: Add print_tlbcam() function

Becky Bruce
2010-06-02T18:12:04Z

This dumps out the contents of TLB1 on 85xx-based systems.

Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org>
---
arch/powerpc/cpu/mpc85xx/tlb.c | 20 ++++++++++++++++++++
arch/powerpc/include/asm/mmu.h | 1 +
2 files changed, 21 insertions(+), 0 deletions(-)

diff --git a/arch/powerpc/cpu/mpc85xx/tlb.c b/arch/powerpc/cpu/mpc85xx/tlb.c
index eebb6ae..f2833a5 100644
--- a/arch/powerpc/cpu/mpc85xx/tlb.c
+++ b/arch/powerpc/cpu/mpc85xx/tlb.c
@@ -74,6 +74,26 @@ void read_tlbcam_entry(int idx, u32 *valid, u32 *tsize, unsigned long *epn,
}

#ifndef CONFIG_NAND_SPL
+void print_tlbcam(void)
+{
+ int i;
+ unsigned int num_cam = mfspr(SPRN_TLB1CFG) & 0xfff;
+
+ /* walk all the entries */
+ printf("TLBCAM entries\n");
+ for (i = 0; i < num_cam; i++) {
+ unsigned long epn;
+ u32 tsize, valid;
+ phys_addr_t rpn;
+
+ read_tlbcam_entry(i, &valid, &tsize, &epn, &rpn);
+ printf("entry %02d: V: %d EPN 0x%08x RPN 0x%08llx size:",
+ i, (valid == 0) ? 0 : 1, (unsigned int)epn,
+ (unsigned long long)rpn);
+ print_size(TSIZE_TO_BYTES(tsize), "\n");
+ }
+}
+
static inline void use_tlb_cam(u8 idx)
{
int i = idx / 32;
diff --git a/arch/powerpc/include/asm/mmu.h b/arch/powerpc/include/asm/mmu.h
index d4c7b75..c01c85f 100644
--- a/arch/powerpc/include/asm/mmu.h
+++ b/arch/powerpc/include/asm/mmu.h
@@ -486,6 +486,7 @@ extern void init_tlbs(void);
extern int find_tlb_idx(void *addr, u8 tlbsel);
extern void init_used_tlb_cams(void);
extern int find_free_tlbcam(void);
+extern void print_tlbcam(void);

extern unsigned int setup_ddr_tlbs(unsigned int memsize_in_meg);

--
1.6.0.6