LS2K:Add window configure for GPU.

Add l2xbar window 0x0000000020000000 to high memeroy (512MB) for GPU mem space.

Change-Id: I496c31b0c8b3bcff316f569ca7a4c5fe60dadba6

Targets/LS2K/ls2k/tgt_machdep.c

@@ -1784,6 +1784,29 @@ void ls_pcie_config_set(void)
 
 	if(!ls2k_version())
 		ls_set_io_noncoherent();
+	else
+		map_gpu_addr();
+}
+
+extern unsigned long long memorysize_total;
+void map_gpu_addr(void)
+{
+
+	if (memorysize_total == 0x800) {
+		__raw__writeq(0x900000001fe10030 , 0x20000000);
+		__raw__writeq(0x900000001fe10070 , 0xffffffffd0000000);
+		__raw__writeq(0x900000001fe100b0 , 0x00000001600000f0);
+	} else if (memorysize_total == 0x1000) {
+		__raw__writeq(0x900000001fe10030 , 0x20000000);
+		__raw__writeq(0x900000001fe10070 , 0xffffffffd0000000);
+		__raw__writeq(0x900000001fe100b0 , 0x00000001d00000f0);
+	} else if (memorysize_total == 0x2000) {
+		__raw__writeq(0x900000001fe10030 , 0x20000000);
+		__raw__writeq(0x900000001fe10070 , 0xffffffffd0000000);
+		__raw__writeq(0x900000001fe100b0 , 0x00000002d00000f0);
+	} else {
+		printf ("Now this Memory size %lld MB is not support mapping GPU address.\n", memorysize_total);
+	}
 }
 
 void ls_set_io_noncoherent(void)