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| author | Stephan Diestelhorst <stephan.diestelhorst@arm.com> | 2014-06-30 13:56:06 -0400 |
|---|---|---|
| committer | Stephan Diestelhorst <stephan.diestelhorst@arm.com> | 2014-06-30 13:56:06 -0400 |
| commit | 65cea4708e2f2f2cb361e12b6385d4bc29618223 (patch) | |
| tree | 9f190702d43e89e2ddb44b6af363330f301ec8fb /src/arch/alpha/AlphaSystem.py | |
| parent | 641e6028304187468b94753752555e9d082a77ac (diff) | |
| download | gem5-65cea4708e2f2f2cb361e12b6385d4bc29618223.tar.xz | |
power: Add basic DVFS support for gem5
Adds DVFS capabilities to gem5, by allowing users to specify lists for
frequencies and voltages in SrcClockDomains and VoltageDomains respectively.
A separate component, DVFSHandler, provides a small interface to change
operating points of the associated domains.
Clock domains will be linked to voltage domains and thus allow separate clock,
but shared voltage lines.
Currently all the valid performance-level updates are performed with a fixed
transition latency as specified for the domain.
Config file example:
...
vd = VoltageDomain(voltage = ['1V','0.95V','0.90V','0.85V'])
tsys.cluster1.clk_domain.clock = ['1GHz','700MHz','400MHz','230MHz']
tsys.cluster2.clk_domain.clock = ['1GHz','700MHz','400MHz','230MHz']
tsys.cluster1.clk_domain.domain_id = 0
tsys.cluster2.clk_domain.domain_id = 1
tsys.cluster1.clk_domain.voltage_domain = vd
tsys.cluster2.clk_domain.voltage_domain = vd
tsys.dvfs_handler.domains = [tsys.cluster1.clk_domain,
tsys.cluster2.clk_domain]
tsys.dvfs_handler.enable = True
Diffstat (limited to 'src/arch/alpha/AlphaSystem.py')
| -rw-r--r-- | src/arch/alpha/AlphaSystem.py | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/arch/alpha/AlphaSystem.py b/src/arch/alpha/AlphaSystem.py index cc8e453b1..5e4822f00 100644 --- a/src/arch/alpha/AlphaSystem.py +++ b/src/arch/alpha/AlphaSystem.py @@ -45,7 +45,8 @@ class LinuxAlphaSystem(AlphaSystem): system_type = 34 system_rev = 1 << 10 - boot_cpu_frequency = Param.Frequency(Self.cpu[0].clk_domain.clock.frequency, + boot_cpu_frequency = Param.Frequency(Self.cpu[0].clk_domain.clock[0] + .frequency, "boot processor frequency") class FreebsdAlphaSystem(AlphaSystem): |