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| author | Thomas Skibo <thomas-git@skibo.net> | 2021-11-25 01:32:09 +0300 |
|---|---|---|
| committer | Leo Yu-Chi Liang <ycliang@andestech.com> | 2021-12-02 11:43:56 +0300 |
| commit | 6a863894ad53b2d0e6c6d47ad105850053757fec (patch) | |
| tree | 6b3c388872fce40712b633a34f8beab04e3d76e1 /doc | |
| parent | ffb78a7c71d555be31c8f8f2bb0fcc2fcfe3892e (diff) | |
| download | u-boot-6a863894ad53b2d0e6c6d47ad105850053757fec.tar.xz | |
riscv: Support booting SiFive Unmatched from SPI.
Configure SPI flash devices into SPL. Add SPI boot option to spl.c.
Document how to format flash for booting.
Signed-off-by: Thomas Skibo <thomas-git@skibo.net>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/board/sifive/unmatched.rst | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/doc/board/sifive/unmatched.rst b/doc/board/sifive/unmatched.rst index 6b024f07f6..b52a1f690c 100644 --- a/doc/board/sifive/unmatched.rst +++ b/doc/board/sifive/unmatched.rst @@ -534,3 +534,34 @@ Sample boot log from HiFive Unmatched board OpenEmbedded nodistro.0 unmatched ttySIF0 unmatched login: + + +Booting from SPI +---------------- + +Use Building steps from "Booting from uSD using U-Boot SPL" section. + +Partition the SPI in Linux via mtdblock. The partition types here are +"HiFive Unleashed FSBL", "HiFive Unleashed BBL", and "U-Boot environment" +for partitions one through three respectively. + +.. code-block:: none + + sgdisk --clear -a 1 \ + --new=1:40:2087 --change-name=1:spl --typecode=1:5B193300-FC78-40CD-8002-E86C45580B47 \ + --new=2:2088:10279 --change-name=2:uboot --typecode=2:2E54B353-1271-4842-806F-E436D6AF6985 \ + --new=3:10280:10535 --change-name=3:env --typecode=3:3DE21764-95BD-54BD-A5C3-4ABE786F38A8 \ + /dev/mtdblock0 + +Write U-boot SPL and U-boot to their partitions. + +.. code-block:: none + + dd if=u-boot-spl.bin of=/dev/mtdblock0 bs=4096 seek=5 conv=sync + dd if=u-boot.itb of=/dev/mtdblock0 bs=4096 seek=261 conv=sync + +Power off the board. + +Change DIP switches MSEL[3:0] to 0110. + +Power up the board. |