| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2012 The Chromium OS Authors. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation; version 2 of |
| * the License. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #include <arch/io.h> |
| #include <console/post_codes.h> |
| #include <cpu/x86/smm.h> |
| #include "pch.h" |
| #include <spi-generic.h> |
| |
| void intel_pch_finalize_smm(void) |
| { |
| u16 tco1_cnt; |
| u16 pmbase; |
| |
| if (CONFIG_LOCK_SPI_ON_RESUME_RO || CONFIG_LOCK_SPI_ON_RESUME_NO_ACCESS) { |
| /* Copy flash regions from FREG0-4 to PR0-4 |
| and enable write protection bit31 */ |
| int i; |
| u32 lockmask = (1 << 31); |
| if (CONFIG_LOCK_SPI_ON_RESUME_NO_ACCESS) |
| lockmask |= (1 << 15); |
| for (i = 0; i < 20; i += 4) |
| RCBA32(0x3874 + i) = RCBA32(0x3854 + i) | lockmask; |
| } |
| |
| /* Set SPI opcode menu */ |
| RCBA16(0x3894) = SPI_OPPREFIX; |
| RCBA16(0x3896) = SPI_OPTYPE; |
| RCBA32(0x3898) = SPI_OPMENU_LOWER; |
| RCBA32(0x389c) = SPI_OPMENU_UPPER; |
| |
| /* Lock SPIBAR */ |
| RCBA32_OR(0x3804, (1 << 15)); |
| |
| #if CONFIG_SPI_FLASH_SMM |
| /* Re-init SPI driver to handle locked BAR */ |
| spi_init(); |
| #endif |
| |
| /* TCLOCKDN: TC Lockdown */ |
| RCBA32_OR(0x0050, (1 << 31)); |
| |
| /* BIOS Interface Lockdown */ |
| RCBA32_OR(0x3410, (1 << 0)); |
| |
| /* Function Disable SUS Well Lockdown */ |
| RCBA_AND_OR(8, 0x3420, ~0U, (1 << 7)); |
| |
| /* Global SMI Lock */ |
| pci_or_config16(PCH_LPC_DEV, GEN_PMCON_1, 1 << 4); |
| |
| /* GEN_PMCON Lock */ |
| pci_or_config8(PCH_LPC_DEV, GEN_PMCON_LOCK, (1 << 1) | (1 << 2)); |
| |
| /* R/WO registers */ |
| RCBA32(0x21a4) = RCBA32(0x21a4); |
| pci_write_config32(PCI_DEV(0, 27, 0), 0x74, |
| pci_read_config32(PCI_DEV(0, 27, 0), 0x74)); |
| |
| /* TCO_Lock */ |
| pmbase = smm_get_pmbase(); |
| tco1_cnt = inw(pmbase + TCO1_CNT); |
| tco1_cnt |= TCO_LOCK; |
| outw(tco1_cnt, pmbase + TCO1_CNT); |
| |
| /* Indicate finalize step with post code */ |
| outb(POST_OS_BOOT, 0x80); |
| } |