1Overview
2--------
3The LS2080A Reference Design (RDB) is a high-performance computing,
4evaluation, and development platform that supports the QorIQ LS2080A, LS2088A
5Layerscape Architecture processor.
6
7The LS2081A Reference Design (RDB) is a high-performance computing,
8evaluation, and development platform that supports the QorIQ LS2081A
9Layerscape Architecture processor.More details in below sections
10
11LS2080A, LS2088A, LS2081A SoC Overview
12--------------------------------------
13Please refer arch/arm/cpu/armv8/fsl-layerscape/doc/README.soc for LS2080A,
14LS2081A, LS2088A SoC overview.
15
16 LS2080ARDB board Overview
17 -----------------------
18 - SERDES Connections, 16 lanes supporting:
19      - PCI Express - 3.0
20      - SATA 3.0
21      - XFI
22 - DDR Controller
23     - Two ports of 72-bits (8-bits ECC) DDR4. Each port supports four
24       chip-selects and two DIMM connectors. Support is up to 2133MT/s.
25     - One port of 40-bits (8-bits ECC) DDR4 which supports four chip-selects
26       and two DIMM connectors. Support is up to 1600MT/s.
27 -IFC/Local Bus
28    - IFC rev. 2.0 implementation supporting Little Endian connection scheme.
29    - 128 MB NOR flash 16-bit data bus
30    - One 2 GB NAND flash with ECC support
31    - CPLD connection
32 - USB 3.0
33    - Two high speed USB 3.0 ports
34    - First USB 3.0 port configured as Host with Type-A connector
35    - Second USB 3.0 port configured as OTG with micro-AB connector
36 - SDHC adapter
37    - SD Card Rev 2.0 and Rev 3.0
38 - DSPI
39    - 128 MB high-speed flash Memory for boot code and storage (up to 108MHz)
40 - 4 I2C controllers
41 - Two SATA onboard connectors
42 - UART
43 - ARM JTAG support
44
45 LS2081ARDB board Overview
46 -------------------------
47 LS2081ARDB board is similar to LS2080ARDB board
48 with few differences like
49  - Hosts LS2081A SoC
50  - Default boot source is QSPI-boot
51  - Does not have IFC interface
52  - RTC and QSPI flash devices are different
53  - Provides QIXIS access via I2C
54
55Memory map from core's view
56----------------------------
570x00_0000_0000 .. 0x00_000F_FFFF	Boot Rom
580x00_0100_0000 .. 0x00_0FFF_FFFF	CCSR
590x00_1800_0000 .. 0x00_181F_FFFF	OCRAM
600x00_2000_0000 .. 0x00_2FFF_FFFF	QSPI region #1
610x00_3000_0000 .. 0x00_3FFF_FFFF	IFC region #1
620x00_8000_0000 .. 0x00_FFFF_FFFF	DDR region #1
630x05_1000_0000 .. 0x05_FFFF_FFFF	IFC region #2
640x80_8000_0000 .. 0xFF_FFFF_FFFF	DDR region #2
65
66Other addresses are either reserved, or not used directly by U-Boot.
67This list should be updated when more addresses are used.
68
69IFC region map from core's view
70-------------------------------
71During boot i.e. IFC Region #1:-
72  0x30000000 - 0x37ffffff : 128MB : NOR flash
73  0x3C000000 - 0x40000000 : 64MB  : CPLD
74
75After relocate to DDR i.e. IFC Region #2:-
76  0x5_1000_0000..0x5_1fff_ffff	Memory Hole
77  0x5_2000_0000..0x5_3fff_ffff	IFC CSx (CPLD, NAND and others 512MB)
78  0x5_4000_0000..0x5_7fff_ffff	ASIC or others 1GB
79  0x5_8000_0000..0x5_bfff_ffff	IFC CS0 1GB (NOR/Promjet)
80  0x5_C000_0000..0x5_ffff_ffff	IFC CS1 1GB (NOR/Promjet)
81
82Booting Options
83---------------
84a) NOR boot
85b) NAND boot
86c) QSPI boot
87
88cfg_rcw_src switches needs to be changed for booting from different option.
89Refer to board documentation for correct switch setting.
90
91QSPI boot details
92===================
93Supported only for
94 LS2088ARDB RevF board with LS2088A SoC.
95
96Images needs to be copied to QSPI flash
97as per memory map given below.
98
99Memory map for QSPI flash
100-------------------------
101Image				Flash Offset
102RCW+PBI				0x00000000
103Boot firmware (U-Boot)		0x00100000
104Boot firmware Environment	0x00300000
105PPA firmware			0x00400000
106Cortina PHY firmware		0x00980000
107DPAA2 MC			0x00A00000
108DPAA2 DPL			0x00D00000
109DPAA2 DPC			0x00E00000
110Kernel.itb			0x01000000
111
112Booting Linux flavors which do not support 48-bit VA (< Linux 3.18)
113-------------------------------------------------------------------
114One needs to use appropriate bootargs to boot Linux flavors which do
115not support 48-bit VA (for e.g. < Linux 3.18) by appending mem=2048M, as shown
116below:
117
118=> setenv bootargs 'console=ttyS1,115200 root=/dev/ram
119   earlycon=uart8250,mmio,0x21c0600,115200 default_hugepagesz=2m hugepagesz=2m
120   hugepages=16 mem=2048M'
121
122