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| author | fishsoupisgood <github@madingley.org> | 2019-04-29 01:17:54 +0100 |
|---|---|---|
| committer | fishsoupisgood <github@madingley.org> | 2019-05-27 03:43:43 +0100 |
| commit | 3f2546b2ef55b661fd8dd69682b38992225e86f6 (patch) | |
| tree | 65ca85f13617aee1dce474596800950f266a456c /roms/u-boot/doc/README.plan9 | |
| download | qemu-master.tar.gz qemu-master.tar.bz2 qemu-master.zip | |
Diffstat (limited to 'roms/u-boot/doc/README.plan9')
| -rw-r--r-- | roms/u-boot/doc/README.plan9 | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/roms/u-boot/doc/README.plan9 b/roms/u-boot/doc/README.plan9 new file mode 100644 index 00000000..2d3d0e0c --- /dev/null +++ b/roms/u-boot/doc/README.plan9 @@ -0,0 +1,18 @@ +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 + +Steven Stallion +June 2013 |