| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <cbmem.h> |
| #include <romstage_handoff.h> |
| #include <console/console.h> |
| #include <device/pci_ops.h> |
| #include <acpi/acpi.h> |
| #include <cpu/x86/lapic.h> |
| #include <arch/romstage.h> |
| #include <northbridge/intel/gm45/gm45.h> |
| #include <southbridge/intel/i82801ix/i82801ix.h> |
| #include <southbridge/intel/common/gpio.h> |
| #include <southbridge/intel/common/pmclib.h> |
| #include <southbridge/intel/common/pmutil.h> |
| #include <string.h> |
| |
| #define LPC_DEV PCI_DEV(0, 0x1f, 0) |
| #define MCH_DEV PCI_DEV(0, 0, 0) |
| |
| void __weak mb_setup_superio(void) |
| { |
| } |
| |
| void __weak mb_pre_raminit_setup(sysinfo_t *sysinfo) |
| { |
| } |
| |
| void __weak mb_post_raminit_setup(void) |
| { |
| } |
| |
| /* Platform has no romstage entry point under mainboard directory, |
| * so this one is named with prefix mainboard. |
| */ |
| void mainboard_romstage_entry(void) |
| { |
| sysinfo_t sysinfo; |
| int s3resume = 0; |
| int cbmem_initted; |
| u16 reg16; |
| |
| /* basic northbridge setup, including MMCONF BAR */ |
| gm45_early_init(); |
| |
| enable_lapic(); |
| |
| /* First, run everything needed for console output. */ |
| i82801ix_early_init(); |
| setup_pch_gpios(&mainboard_gpio_map); |
| |
| reg16 = pci_read_config16(LPC_DEV, D31F0_GEN_PMCON_3); |
| pci_write_config16(LPC_DEV, D31F0_GEN_PMCON_3, reg16); |
| if ((MCHBAR16(SSKPD_MCHBAR) == 0xCAFE) && !(reg16 & (1 << 9))) { |
| printk(BIOS_DEBUG, "soft reset detected, rebooting properly\n"); |
| gm45_early_reset(); |
| } |
| |
| /* ASPM related setting, set early by original BIOS. */ |
| DMIBAR16(0x204) &= ~(3 << 10); |
| |
| /* Check for S3 resume. */ |
| s3resume = southbridge_detect_s3_resume(); |
| |
| /* RAM initialization */ |
| enter_raminit_or_reset(); |
| memset(&sysinfo, 0, sizeof(sysinfo)); |
| get_mb_spd_addrmap(sysinfo.spd_map); |
| const struct device *dev; |
| dev = pcidev_on_root(2, 0); |
| if (dev) |
| sysinfo.enable_igd = dev->enabled; |
| dev = pcidev_on_root(1, 0); |
| if (dev) |
| sysinfo.enable_peg = dev->enabled; |
| get_gmch_info(&sysinfo); |
| |
| mb_pre_raminit_setup(&sysinfo); |
| |
| raminit(&sysinfo, s3resume); |
| |
| mb_post_raminit_setup(); |
| |
| /* Disable D4F0 (unknown signal controller). */ |
| pci_and_config32(MCH_DEV, D0F0_DEVEN, ~0x4000); |
| |
| init_pm(&sysinfo, 0); |
| |
| i82801ix_dmi_setup(); |
| gm45_late_init(sysinfo.stepping); |
| i82801ix_dmi_poll_vc1(); |
| |
| MCHBAR16(SSKPD_MCHBAR) = 0xCAFE; |
| |
| init_iommu(); |
| |
| cbmem_initted = !cbmem_recovery(s3resume); |
| |
| romstage_handoff_init(cbmem_initted && s3resume); |
| |
| printk(BIOS_SPEW, "exit main()\n"); |
| } |