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Add documentation files Signed-off-by: Henry Bell <dmoo_dv@protonmail.com> Cc: ycliang@andestech.com Cc: heinrich.schuchardt@canonical.com Reviewed-by: E Shattow <lucent@gmail.com>
201 lines
6 KiB
ReStructuredText
201 lines
6 KiB
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0+
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Pine64 Star64
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=============
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U-Boot for the Star64 uses the same U-Boot binaries as the VisionFive 2 board.
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In U-Boot SPL the actual board is detected and the device-tree patched
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accordingly.
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Building
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~~~~~~~~
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1. Add the RISC-V toolchain to your PATH.
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2. Setup ARCH & cross compilation environment variable:
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.. code-block:: none
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export CROSS_COMPILE=<riscv64 toolchain prefix>
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The M-mode software OpenSBI provides the supervisor binary interface (SBI) and
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is responsible for the switch to S-Mode. It is a prerequisite to build U-Boot.
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Support for the JH7110 was introduced in OpenSBI 1.2. It is recommended to use
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a current release.
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.. code-block:: console
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git clone https://github.com/riscv/opensbi.git
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cd opensbi
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make PLATFORM=generic FW_TEXT_START=0x40000000
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Now build the U-Boot SPL and U-Boot proper.
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.. code-block:: console
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cd <U-Boot-dir>
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make starfive_visionfive2_defconfig
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make OPENSBI=$(opensbi_dir)/build/platform/generic/firmware/fw_dynamic.bin
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This will generate the U-Boot SPL image (spl/u-boot-spl.bin.normal.out) as well
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as the FIT image (u-boot.itb) with OpenSBI and U-Boot.
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Device-tree selection
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~~~~~~~~~~~~~~~~~~~~~
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U-Boot will set variable $fdtfile to starfive/jh7110-pine64-star64.dtb.
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To overrule this selection the variable can be set manually and saved in the
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environment
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::
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env set fdtfile my_device-tree.dtb
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env save
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or the configuration variable CONFIG_DEFAULT_FDT_FILE can be used to set to
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provide a default value.
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Boot source selection
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~~~~~~~~~~~~~~~~~~~~~
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Boot mode is selected by an MSEL-DIP marked S1804 and GPIO_0 position adjacent
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to the 40pin GPIO header. ON/ONKE and number markings of the MSEL-DIP are
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misleading; Instead refer to the ``L`` (0) and ``H`` (1) silkscreen for
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accurate selection.
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+ (QSPI) Flash: 00
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+ SD: 01
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+ EMMC: 10
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+ UART: 11
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Preparing the SD-Card
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~~~~~~~~~~~~~~~~~~~~~
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The device firmware loads U-Boot SPL (u-boot-spl.bin.normal.out) from the
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partition with type GUID 2E54B353-1271-4842-806F-E436D6AF6985. You are free
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to choose any partition number.
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With the default configuration U-Boot SPL loads the U-Boot FIT image
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(u-boot.itb) from partition 2 (CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION=0x2).
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When formatting it is recommended to use GUID
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BC13C2FF-59E6-4262-A352-B275FD6F7172 for this partition.
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The FIT image (u-boot.itb) is a combination of OpenSBI's fw_dynamic.bin,
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u-boot-nodtb.bin and the device tree blob.
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Format the SD card (make sure the disk has GPT, otherwise use gdisk to switch)
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.. code-block:: bash
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sudo sgdisk --clear \
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--set-alignment=2 \
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--new=1:4096:8191 --change-name=1:spl --typecode=1:2E54B353-1271-4842-806F-E436D6AF6985\
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--new=2:8192:16383 --change-name=2:uboot --typecode=2:BC13C2FF-59E6-4262-A352-B275FD6F7172 \
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--new=3:16384:1654784 --change-name=3:system --typecode=3:EBD0A0A2-B9E5-4433-87C0-68B6B72699C7 \
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/dev/sdb
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Copy U-Boot to the SD card
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.. code-block:: bash
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sudo dd if=u-boot-spl.bin.normal.out of=/dev/sdb1
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sudo dd if=u-boot.itb of=/dev/sdb2
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sudo mount /dev/sdb3 /mnt/
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sudo cp u-boot-spl.bin.normal.out /mnt/
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sudo cp u-boot.itb /mnt/
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sudo cp Image.gz /mnt/
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sudo cp initramfs.cpio.gz /mnt/
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sudo cp jh7110-starfive-visionfive-2.dtb /mnt/
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sudo umount /mnt
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Booting
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~~~~~~~
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Once you plugin the sdcard and power up, you should see the U-Boot prompt.
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Serial Number and MAC address issues
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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U-Boot requires valid EEPROM data to determine which board-specific fix-up to
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apply at runtime. This affects the size of memory initialized, network mac
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address numbering, and tuning of the network PHYs.
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The Star64 does not currently ship with unique serial numbers per-device.
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Devices follow a pattern where the last mac address bytes are a sum of 0x7558
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and the serial number (lower port mac0), or a sum of 0x7559 and the serial
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number (upper port mac1).
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As tested there are several 4gb model units where the serial number and network
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mac addresses collide with other devices (serial
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``STAR64V1-2310-D004E000-00000005``, MACs ``6c:cf:39:00:75:61``,
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``6c:cf:39:00:75:62``)
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Some early Star64 boards shipped with an uninitialized EEPROM and no write
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protect pull-up resistor in place. Later units of all 4gb and 8gb models
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sharing the same serial number in EEPROM data will have this problem that the
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network mac addresses are alike between different models and this may be
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corrected by defeating the write protect resistor to write new values. As an
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alternative to this, it may be worked around by overriding the mac addresses
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via U-Boot environment variables.
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It is required for any unit having uninitialized EEPROM and recommended for
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all later Star64 4gb model units (not properly serialized) to have decided on a
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new 6-byte serial number. This serial number should be high enough to
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avoid collision with other JH7110 boards and low enough not to overflow i.e.
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between ``cafe00`` and ``f00d00``.
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Update EEPROM values
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^^^^^^^^^^^^^^^^^^^^
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1. Prepare EEPROM data in memory
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::
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## When there is no error to load existing data:
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mac read_eeprom
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## When there is an error to load non-existing data:
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# "DRAM: Not a StarFive EEPROM data format - magic error"
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mac initialize
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2. Set Star64 values
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::
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## Common values
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mac vendor PINE64
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mac pcb_revision c1
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mac bom_revision A
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## Device-specific values
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# Year 2023 week 10 production date, 8GB DRAM, optional eMMC, serial cdef01
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mac product_id STAR64V1-2310-D008E000-00cdef01
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# Last three bytes mac0: 0x7558 + serial number 0xcdef01
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mac mac0_address 6c:cf:39:ce:64:59
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# Last three bytes mac1: 0x7559 + serial number 0xcdef01
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mac mac1_address 6c:cf:39:ce:64:5a
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3. Defeat write-protect pull-up resistor (if installed) and write to EEPROM
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::
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mac write_eeprom
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Set Variables in U-Boot
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^^^^^^^^^^^^^^^^^^^^^^^
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.. note:: Changing just the serial number will not alter your MAC address
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The MAC addresses may be "set" as follows by writing as a custom config to SPI
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(Change the last 3 bytes of MAC addreses as appropriate):
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::
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env set serial# STAR64V1-2310-D008E000-00cdef01
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env set ethaddr 6c:cf:39:ce:64:59
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env set eth1addr 6c:cf:39:ce:64:5a
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env save
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reset
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