hmz007
36ed224bac
Signed-off-by: hmz007 <hmz007@gmail.com> Change-Id: Ib87fdbe7a0be7dc961af3500fe9ea4589a127f9f
19 lines
785 B
Plaintext
19 lines
785 B
Plaintext
Plan 9 from Bell Labs kernel images require additional setup to pass
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configuration information to the kernel. An environment variable named
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confaddr must be defined with the same value as CONFADDR (see mem.h).
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Use of this facility is optional, but should be preferable to manual
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configuration.
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When booting an image, arguments supplied to the bootm command will be
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copied to CONFADDR. If no arguments are specified, the contents of the
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bootargs environment variable will be copied.
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If no command line arguments or bootargs are defined, CONFADDR is left
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uninitialized to permit manual configuration. For example, PC-style
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configuration could be simulated by issuing a fatload in bootcmd:
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# setenv bootcmd fatload mmc 0 $confaddr plan9.ini; ...; bootm
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Steven Stallion
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June 2013
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