Overview
--------
The LS1046A Reference Design Board (RDB) is a high-performance computing,
evaluation, and development platform that supports the QorIQ LS1046A
LayerScape Architecture processor. The LS1046ARDB provides SW development
platform for the Freescale LS1046A processor series, with a complete
debugging environment. The LS1046A RDB is lead-free and RoHS-compliant.

LS1046A SoC Overview
--------------------
Please refer arch/arm/cpu/armv8/fsl-layerscape/doc/README.soc for LS1046A
SoC overview.

 LS1046ARDB board Overview
 -----------------------
 - SERDES1 Connections, 4 lanes supporting:
      - Lane0: XFI with x1 RJ45 connector
      - Lane1: XFI Cage
      - Lane2: SGMII.5
      - Lane3: SGMII.6
 - SERDES2 Connections, 4 lanes supporting:
      - Lane0: PCIe1 with miniPCIe slot
      - Lane1: PCIe2 with PCIe x2 slot
      - Lane2: PCIe3 with PCIe x4 slot
      - Lane3: SATA
 - DDR Controller
     - 8GB 64bits DDR4 SDRAM. Support rates of up to 2133MT/s
 -IFC/Local Bus
    - One 512 MB NAND flash with ECC support
    - CPLD connection
 - USB 3.0
    - one Type A port, one Micro-AB port
 - SDHC: connects directly to a full SD/MMC slot
 - DSPI: 64 MB high-speed flash Memory for boot code and storage (up to 108MHz)
 - 4 I2C controllers
 - UART
   - Two 4-pin serial ports at up to 115.2 Kbit/s
   - Two DB9 D-Type connectors supporting one Serial port each
 - ARM JTAG support

Memory map from core's view
----------------------------
Start Address	 End Address	 Description		Size
0x00_0000_0000 - 0x00_000F_FFFF  Secure Boot ROM	1MB
0x00_0100_0000 - 0x00_0FFF_FFFF  CCSRBAR		240MB
0x00_1000_0000 - 0x00_1000_FFFF  OCRAM0 		64KB
0x00_1001_0000 - 0x00_1001_FFFF  OCRAM1 		64KB
0x00_2000_0000 - 0x00_20FF_FFFF  DCSR			16MB
0x00_7E80_0000 - 0x00_7E80_FFFF  IFC - NAND Flash	64KB
0x00_7FB0_0000 - 0x00_7FB0_0FFF  IFC - CPLD		4KB
0x00_8000_0000 - 0x00_FFFF_FFFF  DRAM1			2GB
0x05_0000_0000 - 0x05_07FF_FFFF  QMAN S/W Portal	128M
0x05_0800_0000 - 0x05_0FFF_FFFF  BMAN S/W Portal	128M
0x08_8000_0000 - 0x09_FFFF_FFFF  DRAM2			6GB
0x40_0000_0000 - 0x47_FFFF_FFFF  PCI Express1		32G
0x48_0000_0000 - 0x4F_FFFF_FFFF  PCI Express2		32G
0x50_0000_0000 - 0x57_FFFF_FFFF  PCI Express3		32G

QSPI flash map:
Start Address    End Address     Description		Size
0x00_4000_0000 - 0x00_400F_FFFF  RCW + PBI		1MB
0x00_4010_0000 - 0x00_401F_FFFF  U-Boot 		1MB
0x00_4020_0000 - 0x00_402F_FFFF  U-Boot Env		1MB
0x00_4030_0000 - 0x00_403F_FFFF  FMan ucode		1MB
0x00_4040_0000 - 0x00_404F_FFFF  UEFI			1MB
0x00_4050_0000 - 0x00_406F_FFFF  PPA			2MB
0x00_4070_0000 - 0x00_408F_FFFF  Secure boot header
			         + bootscript		2MB
0x00_4090_0000 - 0x00_40FF_FFFF  Reserved		7MB
0x00_4100_0000 - 0x00_43FF_FFFF  FIT Image		48MB

Booting Options
---------------
a) QSPI boot
b) SD boot
c) eMMC boot