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9b63955b09
Checked using www.shellcheck.net Specific issues addessed: * https://github.com/koalaman/shellcheck/wiki/SC2002 * Use POSIX instead of bash for wider compatibility * Fail on error
36 lines
935 B
Bash
Executable file
36 lines
935 B
Bash
Executable file
#!/bin/sh -e
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MSR_FILE=/sys/module/msr/parameters/allow_writes
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if test -e "$MSR_FILE"; then
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echo on > $MSR_FILE
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else
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modprobe msr allow_writes=on
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fi
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if grep -E 'AMD Ryzen|AMD EPYC' /proc/cpuinfo > /dev/null;
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then
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if grep "cpu family[[:space:]]:[[:space:]]25" /proc/cpuinfo > /dev/null;
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then
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echo "Detected Zen3 CPU"
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wrmsr -a 0xc0011020 0x4480000000000
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wrmsr -a 0xc0011021 0x1c000200000040
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wrmsr -a 0xc0011022 0xc000000401500000
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wrmsr -a 0xc001102b 0x2000cc14
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echo "MSR register values for Zen3 applied"
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else
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echo "Detected Zen1/Zen2 CPU"
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wrmsr -a 0xc0011020 0
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wrmsr -a 0xc0011021 0x40
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wrmsr -a 0xc0011022 0x1510000
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wrmsr -a 0xc001102b 0x2000cc16
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echo "MSR register values for Zen1/Zen2 applied"
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fi
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elif grep "Intel" /proc/cpuinfo > /dev/null;
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then
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echo "Detected Intel CPU"
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wrmsr -a 0x1a4 0xf
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echo "MSR register values for Intel applied"
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else
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echo "No supported CPU detected"
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fi
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