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mpc85xx: Add print_tlbcam() function

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

Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Becky Bruce 2010-06-17 11:37:22 -05:00 committed by Kumar Gala
parent 4e63df300f
commit 70e02bca6b
2 changed files with 21 additions and 0 deletions
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20
arch/powerpc/cpu/mpc85xx/tlb.c
View File

@ -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;

1
arch/powerpc/include/asm/mmu.h
View File

@ -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);