powerpc/85xx: Move INIT_RAM_ADDR physical address to 36-bit space

If 36-bit physical address is used, move the INIT_RAM_ADDR to higher
address. This frees the low 4GB address space for better use.

Signed-off-by: York Sun <yorksun@freescale.com>

arch/powerpc/cpu/mpc85xx/start.S

@@ -330,8 +330,18 @@ _start_e500:
 	lis     r8,FSL_BOOKE_MAS2(CONFIG_SYS_INIT_RAM_ADDR, 0)@h
 	ori     r8,r8,FSL_BOOKE_MAS2(CONFIG_SYS_INIT_RAM_ADDR, 0)@l
 
+#if defined(CONFIG_SYS_INIT_RAM_ADDR_PHYS_LOW) && \
+    defined(CONFIG_SYS_INIT_RAM_ADDR_PHYS_HIGH)
+	lis     r9,FSL_BOOKE_MAS3(CONFIG_SYS_INIT_RAM_ADDR_PHYS_LOW, 0,
+				(MAS3_SX|MAS3_SW|MAS3_SR))@h
+	ori     r9,r9,FSL_BOOKE_MAS3(CONFIG_SYS_INIT_RAM_ADDR_PHYS_LOW, 0,
+				(MAS3_SX|MAS3_SW|MAS3_SR))@l
+	li      r10,CONFIG_SYS_INIT_RAM_ADDR_PHYS_HIGH
+	mtspr	MAS7,r10
+#else
 	lis     r9,FSL_BOOKE_MAS3(CONFIG_SYS_INIT_RAM_ADDR, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@h
 	ori     r9,r9,FSL_BOOKE_MAS3(CONFIG_SYS_INIT_RAM_ADDR, 0, (MAS3_SX|MAS3_SW|MAS3_SR))@l
+#endif
 
 	mtspr   MAS0,r6
 	mtspr   MAS1,r7