| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <stdint.h> |
| #include <console/console.h> |
| #include <arch/io.h> |
| #include <device/pci_ops.h> |
| #include <device/pci_def.h> |
| #include <elog.h> |
| #include <cpu/x86/msr.h> |
| #include <cpu/intel/speedstep.h> |
| #include <cpu/intel/turbo.h> |
| #include <arch/cpu.h> |
| |
| #include "ironlake.h" |
| |
| static void ironlake_setup_bars(void) |
| { |
| printk(BIOS_DEBUG, "Setting up static northbridge registers..."); |
| /* Set up all hardcoded northbridge BARs */ |
| pci_write_config32(PCI_DEV(0, 0x00, 0), EPBAR, DEFAULT_EPBAR | 1); |
| pci_write_config32(PCI_DEV(0, 0x00, 0), EPBAR + 4, 0); |
| pci_write_config32(PCI_DEV(0, 0x00, 0), MCHBAR, (uintptr_t)DEFAULT_MCHBAR | 1); |
| pci_write_config32(PCI_DEV(0, 0x00, 0), MCHBAR + 4, 0); |
| pci_write_config32(PCI_DEV(0, 0x00, 0), DMIBAR, (uintptr_t)DEFAULT_DMIBAR | 1); |
| pci_write_config32(PCI_DEV(0, 0x00, 0), DMIBAR + 4, 0); |
| |
| /* Set C0000-FFFFF to access RAM on both reads and writes */ |
| pci_write_config8(QPI_SAD, QPD0F1_PAM(0), 0x30); |
| pci_write_config8(QPI_SAD, QPD0F1_PAM(1), 0x33); |
| pci_write_config8(QPI_SAD, QPD0F1_PAM(2), 0x33); |
| pci_write_config8(QPI_SAD, QPD0F1_PAM(3), 0x33); |
| pci_write_config8(QPI_SAD, QPD0F1_PAM(4), 0x33); |
| pci_write_config8(QPI_SAD, QPD0F1_PAM(5), 0x33); |
| pci_write_config8(QPI_SAD, QPD0F1_PAM(6), 0x33); |
| |
| printk(BIOS_DEBUG, " done.\n"); |
| } |
| |
| static void early_cpu_init(void) |
| { |
| msr_t m; |
| |
| /* bit 0 = disable multicore, |
| bit 1 = disable quadcore, |
| bit 8 = disable hyperthreading. */ |
| pci_update_config32(QPI_NON_CORE, 0x80, 0xfffffefc, 0x10000); |
| |
| u8 reg8; |
| struct cpuid_result result; |
| result = cpuid_ext(0x6, 0x8b); |
| if (!(result.eax & 0x2)) { |
| m = rdmsr(MSR_FSB_CLOCK_VCC); |
| reg8 = ((m.lo & 0xff00) >> 8) + 1; |
| m = rdmsr(IA32_PERF_CTL); |
| m.lo = (m.lo & ~0xff) | reg8; |
| wrmsr(IA32_PERF_CTL, m); |
| |
| m = rdmsr(IA32_MISC_ENABLE); |
| m.hi &= ~0x00000040; |
| m.lo |= 0x10000; |
| |
| wrmsr(IA32_MISC_ENABLE, m); |
| } |
| |
| m = rdmsr(MSR_FSB_CLOCK_VCC); |
| reg8 = ((m.lo & 0xff00) >> 8) + 1; |
| |
| m = rdmsr(IA32_PERF_CTL); |
| m.lo = (m.lo & ~0xff) | reg8; |
| wrmsr(IA32_PERF_CTL, m); |
| |
| m = rdmsr(IA32_MISC_ENABLE); |
| m.lo |= 0x10000; |
| wrmsr(IA32_MISC_ENABLE, m); |
| } |
| |
| void ironlake_early_initialization(int chipset_type) |
| { |
| u32 capid0_a; |
| u8 reg8; |
| int s3_resume; |
| |
| /* Device ID Override Enable should be done very early */ |
| capid0_a = pci_read_config32(PCI_DEV(0, 0, 0), 0xe4); |
| if (capid0_a & (1 << 10)) { |
| reg8 = pci_read_config8(PCI_DEV(0, 0, 0), 0xf3); |
| reg8 &= ~7; /* Clear 2:0 */ |
| |
| if (chipset_type == IRONLAKE_MOBILE) |
| reg8 |= 1; /* Set bit 0 */ |
| |
| pci_write_config8(PCI_DEV(0, 0, 0), 0xf3, reg8); |
| } |
| |
| /* Setup all BARs required for early PCIe and raminit */ |
| ibexpeak_setup_bars(); |
| ironlake_setup_bars(); |
| |
| s3_resume = (inw(DEFAULT_PMBASE + PM1_STS) & WAK_STS) && |
| (((inl(DEFAULT_PMBASE + PM1_CNT) >> 10) & 7) == SLP_TYP_S3); |
| |
| elog_boot_notify(s3_resume); |
| |
| /* Device Enable */ |
| pci_write_config32(PCI_DEV(0, 0, 0), DEVEN, DEVEN_IGD | DEVEN_PEG10 | DEVEN_HOST); |
| |
| early_cpu_init(); |
| |
| pci_write_config32(PCI_DEV(0, 0x16, 0), 0x10, (uintptr_t)DEFAULT_HECIBAR); |
| pci_write_config32(PCI_DEV(0, 0x16, 0), PCI_COMMAND, |
| PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY); |
| |
| /* Magic for S3 resume. Must be done early. */ |
| if (s3_resume) { |
| MCHBAR32(0x1e8) = (MCHBAR32(0x1e8) & ~1) | 6; |
| MCHBAR32(0x1e8) = (MCHBAR32(0x1e8) & ~3) | 4; |
| } |
| } |