diff options
Diffstat (limited to 'src/northbridge/intel/ironlake/quickpath.c')
| -rw-r--r-- | src/northbridge/intel/ironlake/quickpath.c | 28 |
1 files changed, 22 insertions, 6 deletions
diff --git a/src/northbridge/intel/ironlake/quickpath.c b/src/northbridge/intel/ironlake/quickpath.c index e0e6f666b6..81621d2562 100644 --- a/src/northbridge/intel/ironlake/quickpath.c +++ b/src/northbridge/intel/ironlake/quickpath.c @@ -1,6 +1,8 @@ /* SPDX-License-Identifier: GPL-2.0-only */ #include <console/console.h> +#include <cpu/intel/model_2065x/model_2065x.h> +#include <cpu/x86/msr.h> #include <delay.h> #include <device/pci_def.h> #include <device/pci_ops.h> @@ -495,10 +497,20 @@ void early_quickpath_init(struct raminfo *info, const u8 x2ca8) if (x1c04 != x1804 && x2ca8 == 0) mchbar_setbits8(0x2ca8, 1 << 0); + reg32 = 0x3000000; + if (info->revision >= 0x18 && qpi_pll_ratio <= 12) { + /* Get TDP limit in 1/8W units */ + const msr_t msr = rdmsr(MSR_TURBO_POWER_CURRENT_LIMIT); + if ((msr.lo & 0x7fff) <= 90) + reg32 = 0; + } mchbar_write32(0x18d8, 0x120000); - mchbar_write32(0x18dc, 0x30a484a); + mchbar_write32(0x18dc, reg32 | 0xa484a); + + reg32 = qpi_pll_ratio > 20 ? 8 : 16; pci_write_config32(QPI_PHY_0, QPI_PHY_EP_SELECT, 0x0); - pci_write_config32(QPI_PHY_0, QPI_PHY_EP_MCTR, 0x9444a); + pci_write_config32(QPI_PHY_0, QPI_PHY_EP_MCTR, 0x9404a | reg32 << 7); + mchbar_write32(0x18d8, 0x40000); mchbar_write32(0x18dc, 0xb000000); pci_write_config32(QPI_PHY_0, QPI_PHY_EP_SELECT, 0x60000); @@ -522,14 +534,18 @@ void early_quickpath_init(struct raminfo *info, const u8 x2ca8) if (qpi_pll_ratio <= 14) reg8 = 0x33; - else if (qpi_pll_ratio <= 26) + else if (qpi_pll_ratio <= 22) reg8 = 0x42; else reg8 = 0x51; - mchbar_write32(0x1a10, reg8 << 24 | qpi_pll_ratio * 60); - mchbar_setbits32(0x18b8, 0x200); - mchbar_setbits32(0x1918, 0x300); + info->fsb_frequency = qpi_pll_ratio * 15; + mchbar_write32(0x1a10, reg8 << 24 | info->fsb_frequency); + + if (info->silicon_revision == 2 || info->silicon_revision == 3) { + mchbar_setbits32(0x18b8, 0x200); + mchbar_setbits32(0x1918, 0x300); + } if (info->revision > 0x17) mchbar_setbits32(0x18b8, 0xc00); |