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diff --git a/roms/u-boot/doc/README.t4240qds b/roms/u-boot/doc/README.t4240qds new file mode 100644 index 00000000..ef8c75f3 --- /dev/null +++ b/roms/u-boot/doc/README.t4240qds @@ -0,0 +1,175 @@ +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 |