diff options
| author | Xavi Drudis Ferran <xdrudis@tinet.cat> | 2011-02-28 03:25:07 +0000 |
|---|---|---|
| committer | Marc Jones <marc.jones@amd.com> | 2011-02-28 03:25:07 +0000 |
| commit | 5bcedee0f88fa6390d84f2641dc5b3e109cf6ea3 (patch) | |
| tree | 599614cb26113b9edcfb20eef8200fed891849ba /src/cpu/amd | |
| parent | ce62350d8f5a619c9ce754caeb1e33224e0cce56 (diff) | |
Improving BKDG implementation of P-states,
CPU and northbridge frequency and voltage
handling for Fam 10 in SVI mode.
Add an untested step in BKDG 2.4.2.8. I don't
have the hardware with Core Performance Boost and
I think it's only available in revision E that does
not even have a constant yet.
Signed-off-by: Xavi Drudis Ferran <xdrudis@tinet.cat>
Acked-by: Marc Jones <marcj303@gmail.com>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6405 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/cpu/amd')
| -rw-r--r-- | src/cpu/amd/model_10xxx/fidvid.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/cpu/amd/model_10xxx/fidvid.c b/src/cpu/amd/model_10xxx/fidvid.c index d621f8ddf2..b1bcac577a 100644 --- a/src/cpu/amd/model_10xxx/fidvid.c +++ b/src/cpu/amd/model_10xxx/fidvid.c @@ -65,6 +65,24 @@ static void enable_fid_change(u8 fid) dword); } } + +static void applyBoostFIDOffset( device_t dev ) { + // BKDG 2.4.2.8 + // revision E only, but E is apparently not supported yet, therefore untested + if ((cpuid_edx(0x80000007) & CPB_MASK) + && ((cpuid_ecx(0x80000008) & NC_MASK) ==5) ) { + u32 core = get_node_core_id_x().coreid; + u32 asymetricBoostThisCore = ((pci_read_config32(dev, 0x10C) >> (core*2))) & 3; + msr_t msr = rdmsr(PS_REG_BASE); + u32 cpuFid = msr.lo & PS_CPU_FID_MASK; + cpuFid = cpuFid + asymetricBoostThisCore; + msr.lo &= ~PS_CPU_FID_MASK; + msr.lo |= cpuFid ; + wrmsr(PS_REG_BASE , msr); + + } +} + static void enableNbPState1( device_t dev ) { u32 cpuRev = mctGetLogicalCPUID(0xFF); if (cpuRev & AMD_FAM10_C3) { @@ -872,7 +890,9 @@ static void init_fidvid_stage2(u32 apicid, u32 nodeid) pci_write_config32(dev, 0xA0, dtemp); dualPlaneOnly(dev); + applyBoostFIDOffset(dev); enableNbPState1(dev); + finalPstateChange(); /* Set TSC to tick at the P0 ndfid rate */ |