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https://github.com/AsahiLinux/u-boot
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BSC9131RDB has 1GB DDR. Out of this, only 880MB is passed on to Linux via bootm_size. Remaining -16MB is reserved for PowerPC-DSP shared control area -128MB is reserved for DSP private area. Also 256MB, out of this 880MB is required for data communication between PowerPC and DSP core. For this bootargs are modified to pass parameter to create 1 hugetlb page of 256MB via default_hugepagesz, hugepagesz and hugepages Signed-off-by: Priyanka Jain <Priyanka.Jain@freescale.com> Signed-off-by: Andy Fleming <afleming@freescale.com>
151 lines
5.1 KiB
Text
151 lines
5.1 KiB
Text
Overview
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--------
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- BSC9131 is integrated device that targets Femto base station market.
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It combines Power Architecture e500v2 and DSP StarCore SC3850 core
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technologies with MAPLE-B2F baseband acceleration processing elements.
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- It's MAPLE disabled personality is called 9231.
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The BSC9131 SoC includes the following function and features:
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. Power Architecture subsystem including a e500 processor with 256-Kbyte shared
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L2 cache
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. StarCore SC3850 DSP subsystem with a 512-Kbyte private L2 cache
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. The Multi Accelerator Platform Engine for Femto BaseStation Baseband
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Processing (MAPLE-B2F)
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. A multi-standard baseband algorithm accelerator for Channel Decoding/Encoding,
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Fourier Transforms, UMTS chip rate processing, LTE UP/DL Channel processing,
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and CRC algorithms
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. Consists of accelerators for Convolution, Filtering, Turbo Encoding,
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Turbo Decoding, Viterbi decoding, Chiprate processing, and Matrix Inversion
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operations
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. DDR3/3L memory interface with 32-bit data width without ECC and 16-bit with
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ECC, up to 400-MHz clock/800 MHz data rate
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. Dedicated security engine featuring trusted boot
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. DMA controller
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. OCNDMA with four bidirectional channels
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. Interfaces
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. Two triple-speed Gigabit Ethernet controllers featuring network acceleration
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including IEEE 1588. v2 hardware support and virtualization (eTSEC)
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. eTSEC 1 supports RGMII/RMII
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. eTSEC 2 supports RGMII
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. High-speed USB 2.0 host and device controller with ULPI interface
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. Enhanced secure digital (SD/MMC) host controller (eSDHC)
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. Antenna interface controller (AIC), supporting three industry standard
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JESD207/three custom ADI RF interfaces (two dual port and one single port)
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and three MAXIM's MaxPHY serial interfaces
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. ADI lanes support both full duplex FDD support and half duplex TDD support
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. Universal Subscriber Identity Module (USIM) interface that facilitates
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communication to SIM cards or Eurochip pre-paid phone cards
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. TDM with one TDM port
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. Two DUART, four eSPI, and two I2C controllers
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. Integrated Flash memory controller (IFC)
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. TDM with 256 channels
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. GPIO
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. Sixteen 32-bit timers
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The e500 core subsystem within the Power Architecture consists of the following:
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. 32-Kbyte L1 instruction cache
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. 32-Kbyte L1 data cache
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. 256-Kbyte L2 cache/L2 memory/L2 stash
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. programmable interrupt controller (PIC)
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. Debug support
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. Timers
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The SC3850 core subsystem consists of the following:
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. 32 Kbyte 8-way level 1 instruction cache (L1 ICache)
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. 32 Kbyte 8-way level 1 data cache (L1 DCache)
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. 512 Kbyte 8-way level 2 unified instruction/data cache (M2 memory)
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. Memory management unit (MMU)
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. Enhanced programmable interrupt controller (EPIC)
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. Debug and profiling unit (DPU)
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. Two 32-bit timers
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BSC9131RDB board Overview
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-------------------------
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1Gbyte DDR3 (on board DDR)
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128Mbyte 2K page size NAND Flash
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256 Kbit M24256 I2C EEPROM
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128 Mbit SPI Flash memory
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USB-ULPI
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eTSEC1: Connected to RGMII PHY
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eTSEC2: Connected to RGMII PHY
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DUART interface: supports one UARTs up to 115200 bps for console display
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USIM connector
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Frequency Combinations Supported
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--------------------------------
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Core MHz/CCB MHz/DDR(MT/s)
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1. 1000/500/800
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2. 800/400/667
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Boot Methods Supported
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-----------------------
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1. NAND Flash
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2. SPI Flash
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Default Boot Method
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--------------------
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NAND boot
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Building U-boot
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--------------
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To build the u-boot for BSC9131RDB:
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1. NAND Flash with sysclk 66MHz(J16 on RDB closed, default)
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make BSC9131RDB_NAND
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2. NAND Flash with sysclk 100MHz(J16 on RDB open)
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make BSC9131RDB_NAND_SYSCLK100
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3. SPI Flash with sysclk 66MHz(J16 on RDB closed, default)
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make BSC9131RDB_SPIFLASH
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4. SPI Flash with sysclk 100MHz(J16 on RDB open)
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make BSC9131RDB_SPIFLASH_SYSCLK100
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Memory map
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-----------
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0x0000_0000 0x7FFF_FFFF DDR 1G cacheable
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0xA0000000 0xBFFFFFFF Shared DSP core L2/M2 space 512M
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0xC100_0000 0xC13F_FFFF MAPLE-2F 4M
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0xC1F0_0000 0xC1F3_FFFF PA SRAM Region 0 256K
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0xC1F8_0000 0xC1F9_FFFF PA SRAM Region 1 128K
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0xFED0_0000 0xFED0_3FFF SEC Secured RAM 16K
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0xFEE0_0000 0xFEE0_0FFF DSP Boot ROM 4K
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0xFF60_0000 0xFF6F_FFFF DSP CCSR 1M
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0xFF70_0000 0xFF7F_FFFF PA CCSR 1M
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0xFF80_0000 0xFFFF_FFFF Boot Page & NAND Buffer 8M
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DDR Memory map
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---------------
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0x0000_0000 0x36FF_FFFF Memory passed onto Linux
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0x3700_0000 0x37FF_FFFF PowerPC-DSP shared control area
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0x3800_0000 0x4FFF_FFFF DSP Private area
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Out of 880M, passed onto Linux, 1hugetlb page of 256M is reserved for
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data communcation between PowerPC and DSP core.
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Rest is PowerPC private area.
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Flashing Images
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---------------
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To place a new u-boot image in the NAND flash and then boot
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with that new image temporarily, use this:
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tftp 1000000 u-boot-nand.bin
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nand erase 0 100000
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nand write 1000000 0 100000
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reset
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Using the Device Tree Source File
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---------------------------------
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To create the DTB (Device Tree Binary) image file,
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use a command similar to this:
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dtc -b 0 -f -I dts -O dtb bsc9131rdb.dts > bsc9131rdb.dtb
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Likely, that .dts file will come from here;
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linux-2.6/arch/powerpc/boot/dts/bsc9131rdb.dts
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Booting Linux
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-------------
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Place a linux uImage in the TFTP disk area.
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tftp 1000000 uImage
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tftp 2000000 rootfs.ext2.gz.uboot
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tftp c00000 bsc9131rdb.dtb
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bootm 1000000 2000000 c00000
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