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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 a16deee145c..8a54d9cb030 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 00000000000..f91712c0094 --- /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 |