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ddd8a08052
SoC overviews are getting repeated across board folders. So, Organize SoC overview at common location i.e. fsl-layerscape/doc Also move README.lsch2 and README.lsch3 in same folder. Signed-off-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com> Reviewed-by: York Sun <york.sun@nxp.com>
81 lines
2.8 KiB
Text
81 lines
2.8 KiB
Text
Overview
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--------
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The LS2080A Reference Design (RDB) is a high-performance computing,
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evaluation, and development platform that supports the QorIQ LS2080A
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Layerscape Architecture processor.
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LS2080A SoC Overview
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--------------------
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Please refer arch/arm/cpu/armv8/fsl-layerscape/doc/README.soc for LS2080A
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SoC overview.
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LS2080ARDB board Overview
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-----------------------
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- SERDES Connections, 16 lanes supporting:
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- PCI Express - 3.0
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- SATA 3.0
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- XFI
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- DDR Controller
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- Two ports of 72-bits (8-bits ECC) DDR4. Each port supports four
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chip-selects and two DIMM connectors. Support is up to 2133MT/s.
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- One port of 40-bits (8-bits ECC) DDR4 which supports four chip-selects
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and two DIMM connectors. Support is up to 1600MT/s.
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-IFC/Local Bus
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- IFC rev. 2.0 implementation supporting Little Endian connection scheme.
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- 128 MB NOR flash 16-bit data bus
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- One 2 GB NAND flash with ECC support
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- CPLD connection
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- USB 3.0
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- Two high speed USB 3.0 ports
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- First USB 3.0 port configured as Host with Type-A connector
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- Second USB 3.0 port configured as OTG with micro-AB connector
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- SDHC adapter
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- SD Card Rev 2.0 and Rev 3.0
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- DSPI
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- 128 MB high-speed flash Memory for boot code and storage (up to 108MHz)
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- 4 I2C controllers
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- Two SATA onboard connectors
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- UART
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- ARM JTAG support
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Memory map from core's view
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----------------------------
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0x00_0000_0000 .. 0x00_000F_FFFF Boot Rom
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0x00_0100_0000 .. 0x00_0FFF_FFFF CCSR
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0x00_1800_0000 .. 0x00_181F_FFFF OCRAM
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0x00_3000_0000 .. 0x00_3FFF_FFFF IFC region #1
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0x00_8000_0000 .. 0x00_FFFF_FFFF DDR region #1
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0x05_1000_0000 .. 0x05_FFFF_FFFF IFC region #2
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0x80_8000_0000 .. 0xFF_FFFF_FFFF DDR region #2
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Other addresses are either reserved, or not used directly by U-Boot.
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This list should be updated when more addresses are used.
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IFC region map from core's view
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-------------------------------
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During boot i.e. IFC Region #1:-
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0x30000000 - 0x37ffffff : 128MB : NOR flash
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0x3C000000 - 0x40000000 : 64MB : CPLD
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After relocate to DDR i.e. IFC Region #2:-
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0x5_1000_0000..0x5_1fff_ffff Memory Hole
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0x5_2000_0000..0x5_3fff_ffff IFC CSx (CPLD, NAND and others 512MB)
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0x5_4000_0000..0x5_7fff_ffff ASIC or others 1GB
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0x5_8000_0000..0x5_bfff_ffff IFC CS0 1GB (NOR/Promjet)
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0x5_C000_0000..0x5_ffff_ffff IFC CS1 1GB (NOR/Promjet)
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Booting Options
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---------------
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a) NOR boot
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b) NAND boot
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Booting Linux flavors which do not support 48-bit VA (< Linux 3.18)
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-------------------------------------------------------------------
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One needs to use appropriate bootargs to boot Linux flavors which do
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not support 48-bit VA (for e.g. < Linux 3.18) by appending mem=2048M, as shown
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below:
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=> setenv bootargs 'console=ttyS1,115200 root=/dev/ram
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earlycon=uart8250,mmio,0x21c0600,115200 default_hugepagesz=2m hugepagesz=2m
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hugepages=16 mem=2048M'
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