--- /dev/null
+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
+
+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
Code Review / kvmfornfv.git / blobdiff