powerpc/B4860: enable PBL tool for B4860

Use a default RCW of protocol 0x2A_0x98, and a PBI configure file which
uses CPC1 as 512KB SRAM, then PBL tool can be used on B4860 to build a
pbl boot image.

Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>

board/freescale/b4860qds/b4_pbi.cfg

+#PBI commands
+#Initialize CPC1
+09010000 00200400
+09138000 00000000
+091380c0 00000100
+#Configure CPC1 as 512KB SRAM
+09010100 00000000
+09010104 fff80009
+09010f00 08000000
+09010000 80000000
+#Configure LAW for CPC1
+09000d00 00000000
+09000d04 fff80000
+09000d08 81000012
+#Configure alternate space
+09000010 00000000
+09000014 ff000000
+09000018 81000000
+#Configure SPI controller
+09110000 80000403
+09110020 2d170008
+09110024 00100008
+09110028 00100008
+0911002c 00100008
+#Flush PBL data
+09138000 00000000
+091380c0 00000000

board/freescale/b4860qds/b4_rcw.cfg

+#PBL preamble and RCW header
+aa55aa55 010e0100
+# serdes protocol 0x2A_0x98
+140e0018 0f001218 00000000 00000000
+54980000 9000a000 f8025000 a9000000
+01000000 00000000 00000000 0001b1f8
+00000000 14000020 00000000 00000011

include/configs/B4860QDS.h

@@ -16,6 +16,8 @@
 #ifdef CONFIG_RAMBOOT_PBL
 #define CONFIG_RAMBOOT_TEXT_BASE	CONFIG_SYS_TEXT_BASE
 #define CONFIG_RESET_VECTOR_ADDRESS	0xfffffffc
+#define CONFIG_PBLPBI_CONFIG $(SRCTREE)/board/freescale/b4860qds/b4_pbi.cfg
+#define CONFIG_PBLRCW_CONFIG $(SRCTREE)/board/freescale/b4860qds/b4_rcw.cfg
 #endif
 
 #ifdef CONFIG_SRIO_PCIE_BOOT_SLAVE