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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-sLD3 reference board:
$ make uniphier_sld3_defconfig
$ make CROSS_COMPILE=arm-linux-gnueabi-
PH1-LD4 reference board:
$ make uniphier_ld4_sld8_defconfig
$ make CROSS_COMPILE=arm-linux-gnueabi-
PH1-sLD8 reference board:
$ make uniphier_ld4_sld8_defconfig
$ make CROSS_COMPILE=arm-linux-gnueabi- DEVICE_TREE=uniphier-ph1-sld8-ref
PH1-Pro4 reference board:
$ make uniphier_pro4_defconfig
$ make CROSS_COMPILE=arm-linux-gnueabi-
PH1-Pro5 4KBOX Board:
$ make uniphier_pro5_defconfig
$ make CROSS_COMPILE=arm-linux-gnueabi-
ProXstream2 Gentil board:
$ make uniphier_pxs2_ld6b_defconfig
$ make CROSS_COMPILE=arm-linux-gnueabi- DEVICE_TREE=uniphier-proxstream2-gentil
ProXstream2 Vodka board:
$ make uniphier_pxs2_ld6b_defconfig
$ make CROSS_COMPILE=arm-linux-gnueabi-
PH1-LD6b reference board:
$ make uniphier_pxs2_ld6b_defconfig
$ make CROSS_COMPILE=arm-linux-gnueabi- DEVICE_TREE=uniphier-ph1-ld6b-ref
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.img at the offset address 0x00010000
If a TFTP server is available, the images can be easily updated.
Just copy the u-boot-spl-dtb.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
- SD/eMMC
- USB 2.0 (EHCI)
- USB 3.0 (xHCI)
- GPIO
- LAN (on-board SMSC9118)
- I2C
- EEPROM (connected to the on-board I2C bus)
- Support card (SRAM, NOR flash, some peripherals)
Micro Support Card
------------------
The recommended bit switch settings are as follows:
SW2 OFF(1)/ON(0) Description
------------------------------------------
bit 1 <---- BKSZ[0]
bit 2 ----> BKSZ[1]
bit 3 <---- SoC Bus Width 16/32
bit 4 <---- SERIAL_SEL[0]
bit 5 ----> SERIAL_SEL[1]
bit 6 ----> BOOTSWAP_EN
bit 7 <---- CS1/CS5
bit 8 <---- SOC_SERIAL_DISABLE
SW8 OFF(1)/ON(0) Description
------------------------------------------
bit 1 <---- CS1_SPLIT
bit 2 <---- CASE9_ON
bit 3 <---- CASE10_ON
bit 4 Don't Care Reserve
bit 5 Don't Care Reserve
bit 6 Don't Care Reserve
bit 7 ----> BURST_EN
bit 8 ----> FLASHBUS32_16
The BKSZ[1:0] specifies the address range of memory slot and peripherals
as follows:
BKSZ Description RAM slot Peripherals
--------------------------------------------------------------------
0b00 15MB RAM / 1MB Peri 00000000-00efffff 00f00000-00ffffff
0b01 31MB RAM / 1MB Peri 00000000-01efffff 01f00000-01ffffff
0b10 64MB RAM / 1MB Peri 00000000-03efffff 03f00000-03ffffff
0b11 127MB RAM / 1MB Peri 00000000-07efffff 07f00000-07ffffff
Set BSKZ[1:0] to 0b01 for U-Boot.
This mode is the most handy because EA[24] is always supported by the save pin
mode of the system bus. On the other hand, EA[25] is not supported for some
newer SoCs. Even if it is, EA[25] is not connected on most of the boards.
--
Masahiro Yamada <yamada.masahiro@socionext.com>
Feb. 2016
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