85xx: Fix addrmap to include memory

When we init the addrmap based on the TLB we will not end up getting
the TLB that covers memory if we are using SPD.  The reason is we
haven't relocated at the point that we setup the memory TLB and thus it
will not get setup in the addrmap.

Instead we can just walk over the TLB array after we've relocated and
see all the TLBs that have been set and use that information to populate
the initial addrmap.  By doing this we insure that we get the TLB
entries that cover memory.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

1 files changed, 22 insertions, 6 deletions

diff --git a/cpu/mpc85xx/tlb.c b/cpu/mpc85xx/tlb.c
index 46925f1..43ef1ff 100644
--- a/cpu/mpc85xx/tlb.c
+++ b/cpu/mpc85xx/tlb.c
@@ -110,15 +110,31 @@ void init_tlbs(void)
 void init_addr_map(void)
 {
 	int i;
+	unsigned int max_cam = (mfspr(SPRN_TLB1CFG) >> 16) & 0xff;
 
-	for (i = 0; i < num_tlb_entries; i++) {
-		if (tlb_table[i].tlb == 0)
+	/* walk all the entries */
+	for (i = 0; i < max_cam; i++) {
+		unsigned long epn;
+		u32 tsize, _mas1;	
+		phys_addr_t rpn;
+
+		mtspr(MAS0, FSL_BOOKE_MAS0(1, i, 0));
+
+		asm volatile("tlbre;isync");
+		_mas1 = mfspr(MAS1);
+
+		/* if the entry isn't valid skip it */
+		if (!(_mas1 & MAS1_VALID))
 			continue;
 
-		addrmap_set_entry(tlb_table[i].epn,
-			tlb_table[i].rpn,
-			(1UL << ((tlb_table[i].tsize * 2) + 10)),
-			tlb_table[i].esel);
+		tsize = (_mas1 >> 8) & 0xf;
+		epn = mfspr(MAS2) & MAS2_EPN;
+		rpn = mfspr(MAS3) & MAS3_RPN;
+#ifdef CONFIG_ENABLE_36BIT_PHYS
+		rpn |= ((phys_addr_t)mfspr(MAS7)) << 32;
+#endif
+
+		addrmap_set_entry(epn, rpn, (1UL << ((tsize * 2) + 10)), i);
 	}
 
 	return ;