| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <arch/cpu.h> |
| #include <console/console.h> |
| #include <device/pci_ops.h> |
| #include <device/pci_def.h> |
| #include <northbridge/intel/ironlake/ironlake.h> |
| #include "pch.h" |
| |
| /* This sets up magic Chipset Initialization Registers */ |
| void pch_setup_cir(int chipset_type) |
| { |
| printk(BIOS_DEBUG, "Setting up Chipset Initialization Registers (CIR)\n"); |
| |
| uint16_t lpc_id = pci_read_config16(PCH_LPC_DEV, PCI_DEVICE_ID); |
| struct cpuinfo_x86 c; |
| uint32_t cir22; |
| |
| pci_or_config8(PCH_LPC_DEV, GEN_PMCON_3, 0xfb); |
| |
| RCBA32_OR(GCS, 0x40); /* FERR# MUX enable */ |
| |
| RCBA8(0x3430) |= 0xfc; |
| |
| RCBA32(CIR7) = 0xf; |
| |
| RCBA32(CIR9) = 0; |
| |
| switch (lpc_id) { |
| case 0x3b01: |
| case 0x3b03: |
| case 0x3b05: |
| case 0x3b07: |
| case 0x3b09: |
| case 0x3b0b: |
| case 0x3b0d: |
| case 0x3b0f: |
| RCBA32_AND_OR(CIR6, 0xff1fff7f, 0x600000); |
| break; |
| } |
| |
| RCBA32_OR(0x3310, 0x31); |
| |
| /* Intel 5 Series Chipset and Intel 3400 Series Chipset |
| External Design Specification (EDS) 13.8.1.1 */ |
| if (chipset_type == IRONLAKE_DESKTOP) |
| pci_or_config32(PCH_LPC_DEV, GEN_PMCON_1, 1 << 3); |
| |
| pci_write_config8(PCH_LPC_DEV, CIR4, 0x45); |
| |
| RCBA32(CIR8) = 0x4000000; |
| pci_write_config32(PCH_LPC_DEV, PMIR, 0xc0000300); |
| RCBA32(0x3318) = 0x1020000; /* undocumented */ |
| get_fms(&c, cpuid_eax(1)); |
| if (c.x86_model == 0x1e) { |
| /* Lynnfield/Clarksfield */ |
| RCBA32(CIR13) = 0xfffff; |
| RCBA32(CIR14) = 0x61080; |
| RCBA32(CIR16) = 0x7f8f9f80; |
| RCBA32(CIR18) = 0x3900; |
| RCBA32(CIR19) = 0x20002; |
| RCBA32(CIR20) = 0x44b00; |
| RCBA32(CIR21) = 0x02000; |
| cir22 = 0x20000; |
| } else if (c.x86_model == 0x1f || c.x86_model == 0x25) { |
| /* Auburndale/Havendale + Arrandale/Clarkdale */ |
| RCBA32(CIR10) = 0xfff80; |
| RCBA32(CIR15) = 0x7f8f9fff; |
| RCBA32(CIR17) = 0x2900; |
| RCBA32(CIR19) = 0x10001; |
| RCBA32(CIR20) = 0x1004b; |
| RCBA32(CIR21) = 0x8; |
| cir22 = 0x10000; |
| } else { |
| die("unsupported CPU model: %x!\n", c.x86_model); |
| } |
| |
| /* EDS, 10.1.77: Program this register after all registers in the |
| 3330-33D3 range and D31:F0:A9h are already programmed */ |
| RCBA32(CIR22) = cir22; |
| } |