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docs: miscellaneous documentation fixes and updates

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- fix some broken hyperlinks
- add additional hyperlinks to references to external documents
- reformat some paragraphs to keep lines under 80 characters
- unify the enumeration style between different parts of the
  documentation
- fix spelling/grammar mistakes
- extend the copyright notice in README.md to be the same as the
  one in COPYING.BSD

Signed-off-by: Karsten Merker <merker@debian.org>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
This commit is contained in:
Karsten Merker
2019-05-05 12:33:25 +02:00
committed by Anup Patel
parent 3bb2d25f44
commit 0d33a981ec
10 changed files with 146 additions and 141 deletions
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docs/firmware/payload_uboot.md
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@@ -4,30 +4,32 @@ U-Boot as a payload to OpenSBI
[U-Boot](https://www.denx.de/wiki/U-Boot) is an open-source primary boot loader.
It can be used as first and/or second stage boot loader in an embedded
environment. In the context of OpenSBI, U-Boot can be specified as a payload to
OpenSBI firmware, becoming the boot stage following OpenSBI firmware
the OpenSBI firmware, becoming the boot stage following the OpenSBI firmware
execution.
The current stable upstream code of U-Boot does not yet include all patches
necessary to fully support OpenSBI. To use U-Boot as an OpenSBI payload, the
following out-of-tree patch series must be applied to the upstream U-Boot source
code.
code:
HiFive Unleashed support for U-Boot
https://lists.denx.de/pipermail/u-boot/2019-February/358058.html
This patch series enables a single CPU to execute U-Boot. As a result, the next
stage boot code such as Linux kernel can also only execute a single CPU. U-Boot
SMP support for RISC-V can be enabled with the following additional patches.
stage boot code such as a Linux kernel can also only execute on a single CPU.
U-Boot SMP support for RISC-V can be enabled with the following additional
patches:
https://lists.denx.de/pipermail/u-boot/2019-February/358393.html
Building and Generating U-Boot images
=====================================
Please refer to U-Boot build documentation for detailed instructions on how to build U-Boot images.
Please refer to the U-Boot build documentation for detailed instructions on
how to build U-Boot images.
Once U-Boot images are built, Linux kernel image need to be converted to a format
that U-Boot understands.
Once U-Boot images are built, the Linux kernel image needs to be converted
into a format that U-Boot understands:
```
<uboot-dir>/tools/mkimage -A riscv -O linux -T kernel -C none -a 0x80200000 -e 0x80200000 -n Linux -d \