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 | |
| parent | ce62350d8f5a619c9ce754caeb1e33224e0cce56 (diff) | |
| download | coreboot-5bcedee0f88fa6390d84f2641dc5b3e109cf6ea3.tar.xz | |
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')
| -rw-r--r-- | src/cpu/amd/model_10xxx/fidvid.c | 20 | ||||
| -rw-r--r-- | src/northbridge/amd/amdht/AsPsDefs.h | 4 |
2 files changed, 24 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 */ diff --git a/src/northbridge/amd/amdht/AsPsDefs.h b/src/northbridge/amd/amdht/AsPsDefs.h index ef2e75e4b6..eefedb63ee 100644 --- a/src/northbridge/amd/amdht/AsPsDefs.h +++ b/src/northbridge/amd/amdht/AsPsDefs.h @@ -61,6 +61,8 @@ #define PS_NB_VID_SHFT 25 /* P-state NBVID shift */ #define PS_DIS 0x7fffffff /* disable P-state reg */ #define PS_EN 0x80000000 /* enable P-state reg */ +#define PS_CPU_FID_MASK 0x03f /* MSRC001_00[68:64][CpuFid] + Core Frequency Id */ #define PS_CURDIV_SHFT 8 /* P-state Current Divisor shift position */ #define PS_CPUDID_SHIFT 6 /* P-state CPU DID shift position */ @@ -202,6 +204,8 @@ #define CPB_MASK 0x00000020 /* core performance boost. CPUID Fn8000 0007 edx */ +#define NC_MASK 0x000000FF /* number of cores - 1. CPUID + Fn8000 0008 ecx */ #define PW_CTL_MISC 0x0a0 /* Power Control Miscellaneous Register */ #define COF_VID_PROG_BIT 0x80000000 /* CofVidProg bit. 0= unfused part */ #define DUAL_VDD_BIT 0x40000000 /* DualVdd bit. */ |