U-Boot for UniPhier SoC family
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==============================
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Recommended toolchains
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----------------------
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The UniPhier platform is well tested with Linaro toolchains.
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You can download pre-built toolchains from:
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http://www.linaro.org/downloads/
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Compile the source
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------------------
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The source can be configured and built with the following commands:
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$ make <defconfig>
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$ make CROSS_COMPILE=<toolchain-prefix> DEVICE_TREE=<device-tree>
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The recommended <toolchain-prefix> is `arm-linux-gnueabihf-` for 32bit SoCs,
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`aarch64-linux-gnu-` for 64bit SoCs, but you may wish to change it to use your
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favorite compiler.
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The following tables show <defconfig> and <device-tree> for each board.
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32bit SoC boards:
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Board | <defconfig> | <device-tree>
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---------------|------------------------------|------------------------------
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LD4 reference | uniphier_ld4_sld8_defconfig | uniphier-ld4-ref (default)
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sld8 reference | uniphier_ld4_sld8_defconfig | uniphier-sld8-def
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Pro4 reference | uniphier_pro4_defconfig | uniphier-pro4-ref (default)
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Pro4 Ace | uniphier_pro4_defconfig | uniphier-pro4-ace
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Pro4 Sanji | uniphier_pro4_defconfig | uniphier-pro4-sanji
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Pro5 4KBOX | uniphier_pxs2_ld6b_defconfig | uniphier-pro5-4kbox
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PXs2 Gentil | uniphier_pxs2_ld6b_defconfig | uniphier-pxs2-gentil
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PXs2 Vodka | uniphier_pxs2_ld6b_defconfig | uniphier-pxs2-vodka (default)
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LD6b reference | uniphier_pxs2_ld6b_defconfig | uniphier-ld6b-ref
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64bit SoC boards:
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Board | <defconfig> | <device-tree>
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---------------|-----------------------|----------------------------
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LD11 reference | uniphier_v8_defconfig | uniphier-ld11-ref
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LD11 Global | uniphier_v8_defconfig | uniphier-ld11-global
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LD20 reference | uniphier_v8_defconfig | uniphier-ld20-ref (default)
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LD20 Global | uniphier_v8_defconfig | uniphier-ld20-global
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For example, to compile the source for PXs2 Vodka board, run the following:
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$ make uniphier_pxs2_ld6b_defconfig
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$ make CROSS_COMPILE=arm-linux-gnueabihf- DEVICE_TREE=uniphier-pxs2-vodka
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The device tree marked as (default) can be omitted. `uniphier-pxs2-vodka` is
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the default device tree for the configuration `uniphier_pxs2_ld6b_defconfig`,
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so the following gives the same result.
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$ make uniphier_pxs2_ld6b_defconfig
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$ make CROSS_COMPILE=arm-linux-gnueabihf-
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Booting 32bit SoC boards
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------------------------
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The build command will generate the following:
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- u-boot.bin
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- spl/u-boot.bin
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U-Boot can boot UniPhier 32bit SoC boards by itself. Flash the generated images
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to the storage device (NAND or eMMC) on your board.
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- spl/u-boot-spl.bin at the offset address 0x00000000
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- u-boot.bin at the offset address 0x00020000
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The `u-boot-with-spl.bin` is the concatenation of the two (with appropriate
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padding), so you can also do:
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- u-boot-with-spl.bin at the offset address 0x00000000
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If a TFTP server is available, the images can be easily updated.
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Just copy the u-boot-spl.bin and u-boot.bin to the TFTP public directory,
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and run the following command at the U-Boot command line:
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To update the images in NAND:
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=> run nandupdate
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To update the images in eMMC:
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=> run emmcupdate
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Booting 64bit SoC boards
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------------------------
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The build command will generate the following:
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- u-boot.bin
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However, U-Boot is not the first stage loader for UniPhier 64bit SoC boards.
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U-Boot serves as a non-secure boot loader loaded by [ARM Trusted Firmware],
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so you need to provide the `u-boot.bin` to the build command of ARM Trusted
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Firmware.
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[ARM Trusted Firmware]: https://github.com/ARM-software/arm-trusted-firmware
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UniPhier specific commands
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--------------------------
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- pinmon (enabled by CONFIG_CMD_PINMON)
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shows the boot mode pins that has been latched at the power-on reset
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- ddrphy (enabled by CONFIG_CMD_DDRPHY_DUMP)
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shows the DDR PHY parameters set by the PHY training
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- ddrmphy (enabled by CONFIG_CMD_DDRMPHY_DUMP)
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shows the DDR Multi PHY parameters set by the PHY training
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Supported devices
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-----------------
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- UART (on-chip)
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- NAND
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- SD/eMMC
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- USB 2.0 (EHCI)
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- USB 3.0 (xHCI)
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- GPIO
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- LAN (on-board SMSC9118)
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- I2C
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- EEPROM (connected to the on-board I2C bus)
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- Support card (SRAM, NOR flash, some peripherals)
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Micro Support Card
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------------------
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The recommended bit switch settings are as follows:
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SW2 OFF(1)/ON(0) Description
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------------------------------------------
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bit 1 <---- BKSZ[0]
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bit 2 ----> BKSZ[1]
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bit 3 <---- SoC Bus Width 16/32
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bit 4 <---- SERIAL_SEL[0]
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bit 5 ----> SERIAL_SEL[1]
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bit 6 ----> BOOTSWAP_EN
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bit 7 <---- CS1/CS5
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bit 8 <---- SOC_SERIAL_DISABLE
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SW8 OFF(1)/ON(0) Description
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------------------------------------------
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bit 1 <---- CS1_SPLIT
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bit 2 <---- CASE9_ON
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bit 3 <---- CASE10_ON
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bit 4 Don't Care Reserve
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bit 5 Don't Care Reserve
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bit 6 Don't Care Reserve
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bit 7 ----> BURST_EN
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bit 8 ----> FLASHBUS32_16
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The BKSZ[1:0] specifies the address range of memory slot and peripherals
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as follows:
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BKSZ Description RAM slot Peripherals
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--------------------------------------------------------------------
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0b00 15MB RAM / 1MB Peri 00000000-00efffff 00f00000-00ffffff
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0b01 31MB RAM / 1MB Peri 00000000-01efffff 01f00000-01ffffff
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0b10 64MB RAM / 1MB Peri 00000000-03efffff 03f00000-03ffffff
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0b11 127MB RAM / 1MB Peri 00000000-07efffff 07f00000-07ffffff
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Set BSKZ[1:0] to 0b01 for U-Boot.
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This mode is the most handy because EA[24] is always supported by the save pin
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mode of the system bus. On the other hand, EA[25] is not supported for some
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newer SoCs. Even if it is, EA[25] is not connected on most of the boards.
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--
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Masahiro Yamada <yamada.masahiro@socionext.com>
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Jul. 2017
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