diff options
| author | Timothy Pearson <tpearson@raptorengineeringinc.com> | 2015-08-07 19:05:29 -0500 |
|---|---|---|
| committer | Stefan Reinauer <stefan.reinauer@coreboot.org> | 2015-11-23 18:36:44 +0100 |
| commit | 845b00ce3344d1483d98cddcf59f317a1b96da64 (patch) | |
| tree | 032d4c7d733897f213655420124946da785ed775 /src/northbridge/amd/amdmct/mct_ddr3/mctproc.c | |
| parent | 7e1465431a7869656026f435d7ad2b30f4e8e359 (diff) | |
| download | coreboot-845b00ce3344d1483d98cddcf59f317a1b96da64.tar.xz | |
amd/amdmct/mct_ddr3: Fix poor performance on Family 15h CPUs
Change-Id: Ib6bc197e43e40ba2b923b1eb1229bacafc8be360
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: http://review.coreboot.org/12029
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/northbridge/amd/amdmct/mct_ddr3/mctproc.c')
| -rw-r--r-- | src/northbridge/amd/amdmct/mct_ddr3/mctproc.c | 49 |
1 files changed, 40 insertions, 9 deletions
diff --git a/src/northbridge/amd/amdmct/mct_ddr3/mctproc.c b/src/northbridge/amd/amdmct/mct_ddr3/mctproc.c index 09221935a3..cf13b40b31 100644 --- a/src/northbridge/amd/amdmct/mct_ddr3/mctproc.c +++ b/src/northbridge/amd/amdmct/mct_ddr3/mctproc.c @@ -15,7 +15,8 @@ */ /* mct_SetDramConfigMisc2_Cx & mct_SetDramConfigMisc2_Dx */ -u32 mct_SetDramConfigMisc2(struct DCTStatStruc *pDCTstat, u8 dct, u32 misc2) +u32 mct_SetDramConfigMisc2(struct DCTStatStruc *pDCTstat, + uint8_t dct, uint32_t misc2, uint32_t DramControl) { u32 val; @@ -24,17 +25,47 @@ u32 mct_SetDramConfigMisc2(struct DCTStatStruc *pDCTstat, u8 dct, u32 misc2) if (pDCTstat->LogicalCPUID & AMD_FAM15_ALL) { uint8_t cs_mux_45; uint8_t cs_mux_67; + uint32_t f2x80; - /* BKDG v3.14 Table 200 / Table 201 */ - if (MaxDimmsInstallable < 3) { - cs_mux_45 = 1; - cs_mux_67 = 1; - } else { + misc2 &= ~(0x1 << 28); /* FastSelfRefEntryDis = 0x0 */ + if (MaxDimmsInstallable == 3) { + /* FIXME 3 DIMMS per channel unimplemented */ cs_mux_45 = 0; + } else { + uint32_t f2x60 = Get_NB32_DCT(pDCTstat->dev_dct, dct, 0x60); + f2x80 = Get_NB32_DCT(pDCTstat->dev_dct, dct, 0x80); + if ((((f2x80 & 0xf) == 0x7) || ((f2x80 & 0xf) == 0x9)) + && ((f2x60 & 0x3) == 0x3)) + cs_mux_45 = 1; + else if ((((f2x80 & 0xa) == 0x7) || ((f2x80 & 0xb) == 0x9)) + && ((f2x60 & 0x3) > 0x1)) + cs_mux_45 = 1; + else + cs_mux_45 = 0; + } + + if (MaxDimmsInstallable == 1) { + cs_mux_67 = 0; + } else if (MaxDimmsInstallable == 2) { + uint32_t f2x64 = Get_NB32_DCT(pDCTstat->dev_dct, dct, 0x64); + f2x80 = Get_NB32_DCT(pDCTstat->dev_dct, dct, 0x80); + if (((((f2x80 >> 4) & 0xf) == 0x7) || (((f2x80 >> 4) & 0xf) == 0x9)) + && ((f2x64 & 0x3) == 0x3)) + cs_mux_67 = 1; + else if (((((f2x80 >> 4) & 0xa) == 0x7) || (((f2x80 >> 4) & 0xb) == 0x9)) + && ((f2x64 & 0x3) > 0x1)) + cs_mux_67 = 1; + else + cs_mux_67 = 0; + } else { + /* FIXME 3 DIMMS per channel unimplemented */ cs_mux_67 = 0; } - misc2 |= (cs_mux_45 & 0x1) << 26; - misc2 |= (cs_mux_67 & 0x1) << 27; + + misc2 &= ~(0x1 << 27); /* CsMux67 = cs_mux_67 */ + misc2 |= ((cs_mux_67 & 0x1) << 27); + misc2 &= ~(0x1 << 26); /* CsMux45 = cs_mux_45 */ + misc2 |= ((cs_mux_45 & 0x1) << 26); } else if (pDCTstat->LogicalCPUID & (AMD_DR_Dx | AMD_DR_Cx)) { if (pDCTstat->Status & (1 << SB_Registered)) { misc2 |= 1 << SubMemclkRegDly; @@ -46,8 +77,8 @@ u32 mct_SetDramConfigMisc2(struct DCTStatStruc *pDCTstat, u8 dct, u32 misc2) if (pDCTstat->LogicalCPUID & AMD_DR_Cx) misc2 |= 1 << OdtSwizzle; - val = Get_NB32_DCT(pDCTstat->dev_dct, dct, 0x78); + val = DramControl; val &= 7; val = ((~val) & 0xff) + 1; val += 6; |