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);