mpc86xx: Add support to populate addr map based on BATs
If CONFIG_ADDR_MAP is enabled, update the address map
whenever we write a bat.
Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org>
diff --git a/include/asm-ppc/mmu.h b/include/asm-ppc/mmu.h
index ce04e62..fa92b90 100644
--- a/include/asm-ppc/mmu.h
+++ b/include/asm-ppc/mmu.h
@@ -138,6 +138,10 @@
extern void _tlbie(unsigned long va); /* invalidate a TLB entry */
extern void _tlbia(void); /* invalidate all TLB entries */
+#ifdef CONFIG_ADDR_MAP
+extern void init_addr_map(void);
+#endif
+
typedef enum {
IBAT0 = 0, IBAT1, IBAT2, IBAT3,
DBAT0, DBAT1, DBAT2, DBAT3,
@@ -203,6 +207,14 @@
#define BPP_RX 0x01 /* Read only */
#define BPP_RW 0x02 /* Read/write */
+/* Macros to get values from BATs, once data is in the BAT register format */
+#define BATU_VALID(x) (x & 0x3)
+#define BATU_VADDR(x) (x & 0xfffe0000)
+#define BATL_PADDR(x) ((phys_addr_t)((x & 0xfffe0000) \
+ | ((x & 0x0e00ULL) << 24) \
+ | ((x & 0x04ULL) << 30)))
+#define BATU_SIZE(x) (1UL << (fls((x & BATU_BL_MAX) >> 2) + 17))
+
/* Used to set up SDR1 register */
#define HASH_TABLE_SIZE_64K 0x00010000
#define HASH_TABLE_SIZE_128K 0x00020000
@@ -462,9 +474,7 @@
extern void disable_tlb(u8 esel);
extern void invalidate_tlb(u8 tlb);
extern void init_tlbs(void);
-#ifdef CONFIG_ADDR_MAP
-extern void init_addr_map(void);
-#endif
+
extern unsigned int setup_ddr_tlbs(unsigned int memsize_in_meg);
#define SET_TLB_ENTRY(_tlb, _epn, _rpn, _perms, _wimge, _ts, _esel, _sz, _iprot) \