fb2b584ac4
Add a simple README file.
Signed-off-by: Nils Jacobs <njacobs8@hetnet.nl>
Acked-by: Stefan Reinauer <stepan@coreboot.org>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6274 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
37 lines
1.6 KiB
Plaintext
37 lines
1.6 KiB
Plaintext
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You need to be ROOT or use SUDO to execute MSRTOOL.
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Note that you need /dev/cpu/*/msr available to run msrtool in Linux.
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syntax: msrtool [-hvqrkl] [-c cpu] [-m system] [-t target ...]
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[-i addr=hi[:]lo] | [-s file] | [-d [:]file] | addr...
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-h show this help text
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-v be verbose
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-q be quiet (overrides -v)
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-r include [Reserved] values
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-k list all known systems and targets
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-l list MSRs and bit fields for current target(s) (-kl for ALL targets!)
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-c access MSRs on the specified CPU, default=0
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-m force a system, e.g: -m linux
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-t force a target, can be used multiple times, e.g: -t geodelx -t cs5536
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-i immediate mode
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decode hex addr=hi:lo for the target without reading hw value
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e.g: -i 4c00000f=f2f100ff56960004
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-s stream mode
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read one MSR address per line and append current hw value to the line
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use the filename - for stdin/stdout
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using -l -s ignores input and will output all MSRs with values
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-d diff mode
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read one address and value per line and compare with current hw value,
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printing differences to stdout. use the filename - to read from stdin
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use :file or :- to reverse diff, normally hw values are considered new
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addr.. direct mode, read and decode values for the given MSR address(es)
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Examples:
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msrtool 0x20000018
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./msrtool 0x200000{18,19,1a,1b,1c,1d} 0x4c0000{0f,14}
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