armv8: ls2080ardb: Add QSPI-boot support

QSPI-boot is supported on LS2088ARDB RevF board with LS2088A SoC.
LS2088ARDB RevF Board has limitation that QIXIS can not be accessed.
CONFIG_FSL_QIXIS is not enabled.

Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>
Signed-off-by: Suresh Gupta <suresh.gupta@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
diff --git a/board/freescale/ls2080ardb/README b/board/freescale/ls2080ardb/README
index 0c9c574..873aadf 100644
--- a/board/freescale/ls2080ardb/README
+++ b/board/freescale/ls2080ardb/README
@@ -43,6 +43,7 @@
 0x00_0000_0000 .. 0x00_000F_FFFF	Boot Rom
 0x00_0100_0000 .. 0x00_0FFF_FFFF	CCSR
 0x00_1800_0000 .. 0x00_181F_FFFF	OCRAM
+0x00_2000_0000 .. 0x00_2FFF_FFFF	QSPI region #1
 0x00_3000_0000 .. 0x00_3FFF_FFFF	IFC region #1
 0x00_8000_0000 .. 0x00_FFFF_FFFF	DDR region #1
 0x05_1000_0000 .. 0x05_FFFF_FFFF	IFC region #2
@@ -68,6 +69,31 @@
 ---------------
 a) NOR boot
 b) NAND boot
+c) QSPI boot
+
+cfg_rcw_src switches needs to be changed for booting from different option.
+Refer to board documentation for correct switch setting.
+
+QSPI boot details
+===================
+Supported only for
+ LS2088ARDB RevF board with LS2088A SoC.
+
+Images needs to be copied to QSPI flash
+as per memory map given below.
+
+Memory map for QSPI flash
+-------------------------
+Image				Flash Offset
+RCW+PBI				0x00000000
+Boot firmware (U-Boot)		0x00100000
+Boot firmware Environment	0x00300000
+PPA firmware			0x00400000
+Cortina PHY firmware		0x00980000
+DPAA2 MC			0x00A00000
+DPAA2 DPL			0x00D00000
+DPAA2 DPC			0x00E00000
+Kernel.itb			0x01000000
 
 Booting Linux flavors which do not support 48-bit VA (< Linux 3.18)
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