upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support
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u-boot/doc/README.uniphier

2.0 KiB

U-Boot for UniPhier SoC family
==============================


Tested toolchains
-----------------

(a) Ubuntu packages (CROSS_COMPILE=arm-linux-gnueabi-)

If you are building U-Boot on Ubuntu, its standard package is recommended.
You can install it as follows:

$ sudo apt-get install gcc-arm-linux-gnueabi-

(b) Linaro compilers (CROSS_COMPILE=arm-linux-gnueabihf-)

You can download pre-built toolchains from:

http://www.linaro.org/downloads/

(c) kernel.org compilers (CROSS_COMPILE=arm-unknown-linux-gnueabi-)

You can download pre-built toolchains from:

ftp://www.kernel.org/pub/tools/crosstool/files/bin/


Compile the source
------------------

PH1-Pro4:
$ make ph1_pro4_defconfig
$ make CROSS_COMPILE=arm-linux-gnueabi-

PH1-LD4:
$ make ph1_ld4_defconfig
$ make CROSS_COMPILE=arm-linux-gnueabi-

PH1-sLD8:
$ make ph1_sld8_defconfig
$ make CROSS_COMPILE=arm-linux-gnueabi-

You may wish to change the "CROSS_COMPILE=arm-linux-gnueabi-"
to use your favorite compiler.


Burn U-Boot images to NAND
--------------------------

Write two files to the NAND device as follows:
- spl/u-boot-spl.bin at the offset address 0x00000000
- u-boot-dtb.img at the offset address 0x00010000

If a TFTP server is available, the images can be easily updated.
Just copy the u-boot-spl.bin and u-boot-dtb.img to the TFTP public directory,
and then run the following command at the U-Boot command line:

=> run nandupdate


UniPhier specific commands
--------------------------

- pinmon (enabled by CONFIG_CMD_PINMON)
shows the boot mode pins that has been latched at the power-on reset

- ddrphy (enabled by CONFIG_CMD_DDRPHY_DUMP)
shows the DDR PHY parameters set by the PHY training


Supported devices
-----------------

- UART (on-chip)
- NAND
- USB (2.0)
- LAN (on-board SMSC9118)
- I2C
- EEPROM (connected to the on-board I2C bus)
- Support card (SRAM, NOR flash, some peripherals)


--
Masahiro Yamada <yamada.m@jp.panasonic.com>
Feb. 2015