diff options
| author | Xavi Drudis Ferran <xdrudis@tinet.cat> | 2011-02-28 03:12:00 +0000 |
|---|---|---|
| committer | Marc Jones <marc.jones@amd.com> | 2011-02-28 03:12:00 +0000 |
| commit | e80ce0a134bc88581db40b02ce250bee5adba3a3 (patch) | |
| tree | dc52b84fed93361bdf92443ef196764b670f341f /src/cpu | |
| parent | 26f97d2cf9542694f337abf6ce35fe52b23e5108 (diff) | |
| download | coreboot-e80ce0a134bc88581db40b02ce250bee5adba3a3.tar.xz | |
Improving BKDG implementation of P-states,
CPU and northbridge frequency and voltage
handling for Fam 10 in SVI mode.
Add to init_fidvid_stage2 some step for my CPU (rev C3)
mentioned in BKDG 2.4.2.6 (5) that was missing
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@6403 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/cpu')
| -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 bfa03446d2..53a5f18751 100644 --- a/src/cpu/amd/model_10xxx/fidvid.c +++ b/src/cpu/amd/model_10xxx/fidvid.c @@ -65,6 +65,25 @@ static void enable_fid_change(u8 fid) dword); } } +static void enableNbPState1( device_t dev ) { + u32 cpuRev = mctGetLogicalCPUID(0xFF); + if (cpuRev & AMD_FAM10_C3) { + u32 nbPState = (pci_read_config32(dev, 0x1F0) & NB_PSTATE_MASK); + if ( nbPState){ + u32 nbVid1 = (pci_read_config32(dev, 0x1F4) & NB_VID1_MASK) >> NB_VID1_SHIFT; + u32 i; + for (i = nbPState; i < NM_PS_REG; i++) { + msr_t msr = rdmsr(PS_REG_BASE + i); + if (msr.hi & PS_EN_MASK ) { + msr.hi |= NB_DID_M_ON; + msr.lo &= NB_VID_MASK_OFF; + msr.lo |= ( nbVid1 << NB_VID_POS); + wrmsr(PS_REG_BASE + i, msr); + } + } + } + } +} static void setVSRamp(device_t dev) { /* BKDG r31116 2010-04-22 2.4.1.7 step b F3xD8[VSRampTime] @@ -800,6 +819,7 @@ static void init_fidvid_stage2(u32 apicid, u32 nodeid) dtemp |= PLLLOCK_DFT_L; pci_write_config32(dev, 0xA0, dtemp); + enableNbPState1(dev); finalPstateChange(); /* Set TSC to tick at the P0 ndfid rate */ |