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-Overview
---------
-The T4240QDS is a high-performance computing evaluation, development and test
-platform supporting the T4240 QorIQ™ Power Architecture™ processor. T4240QDS is
-optimized to support the high-bandwidth DDR3 memory ports, as well as the
-highly-configurable SerDes ports. The system is lead-free and RoHS-compliant.
-
-Board Features
- SERDES Connections
- 32 lanes grouped into four 8-lane banks
- Two “front side” banks dedicated to Ethernet
- - High-speed crosspoint switch fabric on selected lanes
- - Two PCI Express slots with side-band connector supporting
- - SGMII
- - XAUI
- - HiGig
- - I-pass connectors allow board-to-board and loopback support
- Two “back side” banks dedicated to other protocols
- - High-speed crosspoint switch fabric on all lanes
- - Four PCI Express slots with side-band connector supporting
- - PCI Express 3.0
- - SATA 2.0
- - SRIO 2.0
- - Supports 4X Aurora debug with two connectors
- DDR Controllers
- Three independant 64-bit DDR3 controllers
- Supports rates of 1866 up to 2133 MHz data-rate
- Supports two DDR3/DDR3LP UDIMM/RDIMMs per controller
- DDR power supplies 1.5V to all devices with automatic tracking of VTT.
- Power software-switchable to 1.35V if software detects all DDR3LP devices.
- MT9JSF25672AZ-2G1KZESZF has been tested at 1333, 1600, 1867, 2000 and
- 2133MT/s speeds. For 1867MT/s and above, read-to-write turnaround time
- increases by 1 clock.
-
- IFC/Local Bus
- NAND flash: 8-bit, async or sync, up to 2GB.
- NOR: 16-bit, Address/Data Multiplexed (ADM), up to 128 MB
- NOR: 8-bit or 16-bit, non-multiplexed, up to 512MB
- - NOR devices support 16 virtual banks
- GASIC: Minimal target within Qixis FPGA
- PromJET rapid memory download support
- Address demultiplexing handled within FPGA.
- - Flexible demux allows 8 or 16 bit evaluation.
- IFC Debug/Development card
- - Support for 32-bit devices
- Ethernet
- Support two on-board RGMII 10/100/1G ethernet ports.
- SGMII and XAUI support via SERDES block (see above).
- 1588 support via Symmetricom board.
- QIXIS System Logic FPGA
- Manages system power and reset sequencing
- Manages DUT, board, clock, etc. configuration for dynamic shmoo
- Collects V-I-T data in background for code/power profiling.
- Supports legacy TMT test features (POSt, IRS, SYSCLK-synchronous assertion)
- General fault monitoring and logging
- Runs from ATX “hot” power rails allowing operation while system is off.
- Clocks
- System and DDR clock (SYSCLK, “DDRCLK”)
- - Switch selectable to one of 16 common settings in the interval 33MHz-166MHz.
- - Software selectable in 1MHz increments from 1-200MHz.
- SERDES clocks
- - Provides clocks to all SerDes blocks and slots
- - 100, 125 and 156.25 MHz
- Power Supplies
- Dedicated regulators for VDD
- - Adjustable from (0.7V to 1.3V at 80A
- - Regulators can be controlled by VID and/or software
- Dedicated regulator for GVDD_PL: 1.35/1.5V at 22A
- - VTT/MVREF automatically track operating voltage
- Dedicated regulators/filters for AVDD supplies
- Dedicated regulators for other supplies: OVDD, BVDD, DVDD, LVDD, POVDD, etc.
- USB
- Supports two USB 2.0 ports with integrated PHYs
- - One type A, one type micro-AB with 1.0A power per port.
- Other IO
- eSDHC/MMC
- - SDHC card slot
- eSPI port
- - High-speed serial flash
- Two Serial port
- Four I2C ports
- XFI
- XFI is supported on T4QDS-XFI board which removed slot3 and routed
- four Lanes A/B/C/D to a SFP+ cages, which to house fiber cable or
- direct attach cable(copper), the copper cable is used to emulate
- 10GBASE-KR scenario.
- So, for XFI usage, there are two scenarios, one will use fiber cable,
- another will use copper cable. An hwconfig env "fsl_10gkr_copper" is
- introduced to indicate a XFI port will use copper cable, and U-boot
- will fixup the dtb accordingly.
- It's used as: fsl_10gkr_copper:<10g_mac_name>
- The <10g_mac_name> can be fm1_10g1, fm1_10g2, fm2_10g1, fm2_10g2, they
- do not have to be coexist in hwconfig. If a MAC is listed in the env
- "fsl_10gkr_copper", it will use copper cable, otherwise, fiber cable
- will be used by default.
- for ex. set "fsl_10gkr_copper:fm1_10g1,fm1_10g2,fm2_10g1,fm2_10g2" in
- hwconfig, then both four XFI ports will use copper cable.
- set "fsl_10gkr_copper:fm1_10g1,fm1_10g2" in hwconfig, then first two
- XFI ports will use copper cable, the other two XFI ports will use fiber
- cable.
-
-Memory map
-----------
-The addresses in brackets are physical addresses.
-
-0x0_0000_0000 (0x0_0000_0000) - 0x0_7fff_ffff 2GB DDR (more than 2GB is initialized but not mapped under with TLB)
-0x0_8000_0000 (0xc_0000_0000) - 0x0_dfff_ffff 1.5GB PCIE memory
-0x0_f000_0000 (0xf_0000_0000) - 0x0_f1ff_ffff 32MB DCSR (includes trace buffers)
-0x0_f400_0000 (0xf_f400_0000) - 0x0_f5ff_ffff 32MB BMan
-0x0_f600_0000 (0xf_f600_0000) - 0x0_f7ff_ffff 32MB QMan
-0x0_f800_0000 (0xf_f800_0000) - 0x0_f803_ffff 256KB PCIE IO
-0x0_e000_0000 (0xf_e000_0000) - 0x0_efff_ffff 256MB NOR flash
-0x0_fe00_0000 (0xf_fe00_0000) - 0x0_feff_ffff 16MB CCSR
-0x0_ffdf_0000 (0xf_ffdf_0000) - 0x0_ffdf_03ff 4KB QIXIS
-0x0_ffff_f000 (0x0_7fff_fff0) - 0x0_ffff_ffff 4KB Boot page translation for secondary cores
-
-The physical address of the last (boot page translation) varies with the actual DDR size.
-
-Voltage ID and VDD override
---------------------
-T4240 has a VID feature. U-boot reads the VID efuses and adjust the voltage
-accordingly. The voltage can also be override by command vdd_override. The
-syntax is
-
-vdd_override <voltage in mV>, eg. 1050 is for 1.050v.
-
-Upon success, the actual voltage will be read back. The value is checked
-for safety and any invalid value will not adjust the voltage.
-
-Another way to override VDD is to use environmental variable, in case of using
-command is too late for some debugging. The syntax is
-
-setenv t4240qds_vdd_mv <voltage in mV>
-saveenv
-reset
-
-The override voltage takes effect when booting.
-
-Note: voltage adjustment needs to be done step by step. Changing voltage too
-rapidly may cause current surge. The voltage stepping is done by software.
-Users can set the final voltage directly.
-
-2-stage NAND/SD boot loader
--------------------------------
-PBL initializes the internal SRAM and copy SPL(160K) in SRAM.
-SPL further initialise DDR using SPD and environment variables
-and copy u-boot(768 KB) from NAND/SD device to DDR.
-Finally SPL transers control to u-boot for futher booting.
-
-SPL has following features:
- - Executes within 256K
- - No relocation required
-
-Run time view of SPL framework
--------------------------------------------------
-|Area | Address |
--------------------------------------------------
-|SecureBoot header | 0xFFFC0000 (32KB) |
--------------------------------------------------
-|GD, BD | 0xFFFC8000 (4KB) |
--------------------------------------------------
-|ENV | 0xFFFC9000 (8KB) |
--------------------------------------------------
-|HEAP | 0xFFFCB000 (50KB) |
--------------------------------------------------
-|STACK | 0xFFFD8000 (22KB) |
--------------------------------------------------
-|U-boot SPL | 0xFFFD8000 (160KB) |
--------------------------------------------------
-
-NAND Flash memory Map on T4QDS
---------------------------------------------------------------
-Start End Definition Size
-0x000000 0x0FFFFF u-boot img 1MB
-0x140000 0x15FFFF u-boot env 128KB
-0x160000 0x17FFFF FMAN Ucode 128KB
-
-Micro SD Card memory Map on T4QDS
-----------------------------------------------------
-Block #blocks Definition Size
-0x008 2048 u-boot img 1MB
-0x800 0016 u-boot env 8KB
-0x820 0128 FMAN ucode 64KB
-
-Switch Settings: (ON is 1, OFF is 0)
-===============
-NAND boot SW setting:
-SW1[1:8] = 10000010
-SW2[1.1] = 0
-SW6[1:4] = 1001
-
-SD boot SW setting:
-SW1[1:8] = 00100000
-SW2[1.1] = 0