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| author | Bin Meng <bmeng.cn@gmail.com> | 2022-03-28 10:43:51 +0800 |
|---|---|---|
| committer | Heinrich Schuchardt <heinrich.schuchardt@canonical.com> | 2022-03-31 19:06:16 +0200 |
| commit | 51a407b872c57938a8f68156b6bdbfb8a528c652 (patch) | |
| tree | 2344c428c86a1927f48788b50db94bad2ff22456 /doc/usage | |
| parent | 7fc86c7ed8e3cbfbbf9a08169fd55997f4ee0f0c (diff) | |
| download | u-boot-51a407b872c57938a8f68156b6bdbfb8a528c652.tar.gz | |
doc: usage: Convert README.plan9 to reST
This converts the existing README.plan9 to reST, and puts it under
the doc/usage/os directory.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Diffstat (limited to 'doc/usage')
| -rw-r--r-- | doc/usage/index.rst | 1 | ||||
| -rw-r--r-- | doc/usage/os/plan9.rst | 22 |
2 files changed, 23 insertions, 0 deletions
diff --git a/doc/usage/index.rst b/doc/usage/index.rst index a16deee145..8a54d9cb03 100644 --- a/doc/usage/index.rst +++ b/doc/usage/index.rst @@ -60,4 +60,5 @@ Booting OS .. toctree:: :maxdepth: 1 + os/plan9 os/vxworks diff --git a/doc/usage/os/plan9.rst b/doc/usage/os/plan9.rst new file mode 100644 index 0000000000..f91712c009 --- /dev/null +++ b/doc/usage/os/plan9.rst @@ -0,0 +1,22 @@ +.. SPDX-License-Identifier: GPL-2.0+ +.. Steven Stallion +.. June 2013 + +Plan 9 +====== + +Plan 9 from Bell Labs kernel images require additional setup to pass +configuration information to the kernel. An environment variable named +confaddr must be defined with the same value as CONFADDR (see mem.h). +Use of this facility is optional, but should be preferable to manual +configuration. + +When booting an image, arguments supplied to the bootm command will be +copied to CONFADDR. If no arguments are specified, the contents of the +bootargs environment variable will be copied. + +If no command line arguments or bootargs are defined, CONFADDR is left +uninitialized to permit manual configuration. For example, PC-style +configuration could be simulated by issuing a fatload in bootcmd:: + + # setenv bootcmd fatload mmc 0 $confaddr plan9.ini; ...; bootm |