Overview
--------
The LS2080A Development System (QDS) is a high-performance computing,
evaluation, and development platform that supports the QorIQ LS2080A
Layerscape Architecture processor. The LS2080AQDS provides validation and
SW development platform for the Freescale LS2080A processor series, with
a complete debugging environment.

LS2080A SoC Overview
--------------------
Please refer arch/arm/cpu/armv8/fsl-layerscape/doc/README.soc for LS2080A
SoC overview.

 LS2080AQDS board Overview
 -----------------------
 - SERDES Connections, 16 lanes supporting:
      - PCI Express - 3.0
      - SGMII, SGMII 2.5
      - QSGMII
      - SATA 3.0
      - XAUI
      - XFI
 - DDR Controller
     - Two ports of 72-bits (8-bits ECC) DDR4. Each port supports four
       chip-selects and two DIMM connectors. Support is up to 2133MT/s.
     - One port of 40-bits (8-bits ECC) DDR4 which supports four chip-selects
       and two DIMM connectors. Support is up to 1600MT/s.
 -IFC/Local Bus
    - IFC rev. 2.0 implementation supporting Little Endian connection scheme.
    - One in-socket 128 MB NOR flash 16-bit data bus
    - One 512 MB NAND flash with ECC support
    - IFC Test Port
    - PromJet Port
    - FPGA connection
 - USB 3.0
    - Two high speed USB 3.0 ports
    - First USB 3.0 port configured as Host with Type-A connector
    - Second USB 3.0 port configured as OTG with micro-AB connector
 - SDHC: PCIe x1 Right Angle connector for supporting following cards
    - 1/4-/8-bit SD/MMC Legacy CARD supporting 3.3V devices only
    - 1-/4-/8-bit SD/MMC Card supporting 1.8V devices only
    - 4-bit eMMC Card Rev 4.4 (1.8V only)
    - 8-bit eMMC Card Rev 4.5 (1.8V only)
    - SD Card Rev 2.0 and Rev 3.0
 - DSPI: 3 high-speed flash Memory for storage
    - 16 MB high-speed flash Memory for boot code and storage (up to 108MHz)
    - 8 MB high-speed flash Memory (up to 104 MHz)
    - 512 MB low-speed flash Memory (up to 40 MHz)
 - QSPI: via NAND/QSPI Card
 - 4 I2C controllers
 - Two SATA onboard connectors
 - UART
   - Two 4-pin (HW control) or four 2-pin (SW control) 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
----------------------------
0x00_0000_0000 .. 0x00_000F_FFFF	Boot Rom
0x00_0100_0000 .. 0x00_0FFF_FFFF	CCSR
0x00_1800_0000 .. 0x00_181F_FFFF	OCRAM
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
0x80_8000_0000 .. 0xFF_FFFF_FFFF	DDR region #2

Other addresses are either reserved, or not used directly by U-Boot.
This list should be updated when more addresses are used.

IFC region map from core's view
-------------------------------
During boot i.e. IFC Region #1:-
  0x30000000 - 0x37ffffff : 128MB : NOR flash
  0x38000000 - 0x3BFFFFFF : 64MB  : Promjet
  0x3C000000 - 0x40000000 : 64MB  : FPGA etc

After relocate to DDR i.e. IFC Region #2:-
  0x5_1000_0000..0x5_1fff_ffff	Memory Hole
  0x5_2000_0000..0x5_3fff_ffff	IFC CSx (FPGA, NAND and others 512MB)
  0x5_4000_0000..0x5_7fff_ffff	ASIC or others 1GB
  0x5_8000_0000..0x5_bfff_ffff	IFC CS0 1GB (NOR/Promjet)
  0x5_C000_0000..0x5_ffff_ffff	IFC CS1 1GB (NOR/Promjet)

Booting Options
---------------
a) Promjet Boot
b) NOR boot
c) NAND boot
d) SD boot
e) QSPI boot

Environment Variables
---------------------
- mcboottimeout: MC boot timeout in milliseconds. If this variable is not defined
  the value CONFIG_SYS_LS_MC_BOOT_TIMEOUT_MS will be assumed.

- mcmemsize: MC DRAM block size. If this variable is not defined
  the value CONFIG_SYS_LS_MC_DRAM_BLOCK_MIN_SIZE will be assumed.

Booting Linux flavors which do not support 48-bit VA (< Linux 3.18)
-------------------------------------------------------------------
One needs to use appropriate bootargs to boot Linux flavors which do
not support 48-bit VA (for e.g. < Linux 3.18) by appending mem=2048M, as shown
below:

=> setenv bootargs 'console=ttyS1,115200 root=/dev/ram
   earlycon=uart8250,mmio,0x21c0600,115200 default_hugepagesz=2m hugepagesz=2m
   hugepages=16 mem=2048M'


X-QSGMII-16PORT riser card
----------------------------
The X-QSGMII-16PORT is a 4xQSGMII/8xSGMII riser card with eighth SerDes
interfaces implemented in PCIe form factor board.
It supports followings
 - Card can operate with up to 4 QSGMII lane simultaneously
 - Card can operate with up to 8 SGMII lane simultaneously

Supported card configuration
	- CSEL  : ON ON ON ON
	- MSEL1 : ON ON ON ON OFF OFF OFF OFF
	- MSEL2 : OFF OFF OFF OFF ON ON ON ON

To enable this card: modify hwconfig to add "xqsgmii" variable.

Supported PHY addresses during SGMII:
#define XQSGMII_CARD_PHY1_PORT0_ADDR 0x0
#define XQSGMII_CARD_PHY1_PORT2_ADDR 0x2
#define XQSGMII_CARD_PHY2_PORT0_ADDR 0x4
#define XQSGMII_CARD_PHY2_PORT2_ADDR 0x6
#define XQSGMII_CARD_PHY3_PORT0_ADDR 0x8
#define XQSGMII_CARD_PHY3_PORT2_ADDR 0xa
#define XQSGMII_CARD_PHY4_PORT0_ADDR 0xc
#define XQSGMII_CARD_PHY4_PORT2_ADDR 0xe

Mapping DPMACx to PHY during SGMII
DPMAC1 -> PHY1-P0
DPMAC2 -> PHY2-P0
DPMAC3 -> PHY3-P0
DPMAC4 -> PHY4-P0
DPMAC5 -> PHY3-P2
DPMAC6 -> PHY1-P2
DPMAC7 -> PHY4-P1
DPMAC8 -> PHY2-P2
DPMAC9 -> PHY1-P0
DPMAC10 -> PHY2-P0
DPMAC11 -> PHY3-P0
DPMAC12 -> PHY4-P0
DPMAC13 -> PHY3-P2
DPMAC14 -> PHY1-P2
DPMAC15 -> PHY4-P1
DPMAC16 -> PHY2-P2


Supported PHY address during QSGMII
#define XQSGMII_CARD_PHY1_PORT0_ADDR 0x0
#define XQSGMII_CARD_PHY1_PORT1_ADDR 0x1
#define XQSGMII_CARD_PHY1_PORT2_ADDR 0x2
#define XQSGMII_CARD_PHY1_PORT3_ADDR 0x3
#define XQSGMII_CARD_PHY2_PORT0_ADDR 0x4
#define XQSGMII_CARD_PHY2_PORT1_ADDR 0x5
#define XQSGMII_CARD_PHY2_PORT2_ADDR 0x6
#define XQSGMII_CARD_PHY2_PORT3_ADDR 0x7
#define XQSGMII_CARD_PHY3_PORT0_ADDR 0x8
#define XQSGMII_CARD_PHY3_PORT1_ADDR 0x9
#define XQSGMII_CARD_PHY3_PORT2_ADDR 0xa
#define XQSGMII_CARD_PHY3_PORT3_ADDR 0xb
#define XQSGMII_CARD_PHY4_PORT0_ADDR 0xc
#define XQSGMII_CARD_PHY4_PORT1_ADDR 0xd
#define XQSGMII_CARD_PHY4_PORT2_ADDR 0xe
#define XQSGMII_CARD_PHY4_PORT3_ADDR 0xf

Mapping DPMACx to PHY during QSGMII
DPMAC1 -> PHY1-P3
DPMAC2 -> PHY1-P2
DPMAC3 -> PHY1-P1
DPMAC4 -> PHY1-P0
DPMAC5 -> PHY2-P3
DPMAC6 -> PHY2-P2
DPMAC7 -> PHY2-P1
DPMAC8 -> PHY2-P0
DPMAC9 -> PHY3-P0
DPMAC10 -> PHY3-P1
DPMAC11 -> PHY3-P2
DPMAC12 -> PHY3-P3
DPMAC13 -> PHY4-P0
DPMAC14 -> PHY4-P1
DPMAC15 -> PHY4-P2
DPMAC16 -> PHY4-P3