diff options
| author | Duncan Laurie <dlaurie@chromium.org> | 2012-07-16 12:14:49 -0700 |
|---|---|---|
| committer | Ronald G. Minnich <rminnich@gmail.com> | 2012-07-26 20:32:10 +0200 |
| commit | d6aca0b7b14780a03c83e283f940f56c474a77dd (patch) | |
| tree | a3c37ea32f071f83458a37558cfc6049c086ee1a /src/cpu | |
| parent | 0eefa005030a70f5c691155b931bb778ad1fb2ae (diff) | |
| download | coreboot-d6aca0b7b14780a03c83e283f940f56c474a77dd.tar.xz | |
ACPI: Add a method to notify OS to re-read _PPC
Split this behavior out from PNOT() so the OS can
update _PPC limit without re-reading C-state tables.
Change-Id: I81b9111a4866f6b9916f74ac57a3caefaa77c565
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: http://review.coreboot.org/1342
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Diffstat (limited to 'src/cpu')
| -rw-r--r-- | src/cpu/intel/model_206ax/acpi/cpu.asl | 27 |
1 files changed, 19 insertions, 8 deletions
diff --git a/src/cpu/intel/model_206ax/acpi/cpu.asl b/src/cpu/intel/model_206ax/acpi/cpu.asl index a9d5eebaec..558a9d3663 100644 --- a/src/cpu/intel/model_206ax/acpi/cpu.asl +++ b/src/cpu/intel/model_206ax/acpi/cpu.asl @@ -33,29 +33,40 @@ External (\_PR.CPU7, DeviceObj) Method (PNOT) { If (LGreaterEqual (\PCNT, 2)) { - Notify (\_PR.CPU0, 0x80) // _PPC Notify (\_PR.CPU0, 0x81) // _CST - Notify (\_PR.CPU1, 0x80) // _PPC Notify (\_PR.CPU1, 0x81) // _CST } If (LGreaterEqual (\PCNT, 4)) { - Notify (\_PR.CPU2, 0x80) // _PPC Notify (\_PR.CPU2, 0x81) // _CST - Notify (\_PR.CPU3, 0x80) // _PPC Notify (\_PR.CPU3, 0x81) // _CST } If (LGreaterEqual (\PCNT, 8)) { - Notify (\_PR.CPU4, 0x80) // _PPC Notify (\_PR.CPU4, 0x81) // _CST - Notify (\_PR.CPU5, 0x80) // _PPC Notify (\_PR.CPU5, 0x81) // _CST - Notify (\_PR.CPU6, 0x80) // _PPC Notify (\_PR.CPU6, 0x81) // _CST - Notify (\_PR.CPU7, 0x80) // _PPC Notify (\_PR.CPU7, 0x81) // _CST } } +/* Notify OS to re-read CPU _PPC limit, assuming ^2 CPU count */ +Method (PPCN) +{ + If (LGreaterEqual (\PCNT, 2)) { + Notify (\_PR.CPU0, 0x80) // _PPC + Notify (\_PR.CPU1, 0x80) // _PPC + } + If (LGreaterEqual (\PCNT, 4)) { + Notify (\_PR.CPU2, 0x80) // _PPC + Notify (\_PR.CPU3, 0x80) // _PPC + } + If (LGreaterEqual (\PCNT, 8)) { + Notify (\_PR.CPU4, 0x80) // _PPC + Notify (\_PR.CPU5, 0x80) // _PPC + Notify (\_PR.CPU6, 0x80) // _PPC + Notify (\_PR.CPU7, 0x80) // _PPC + } +} + /* Notify OS to re-read Throttle Limit tables, assuming ^2 CPU count */ Method (TNOT) { |