aboutsummaryrefslogtreecommitdiff
path: root/src/northbridge/intel/x4x/bootblock.c
blob: 0a8946c5ec695c5545f24b550a66532e96157377 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
/*
 * This file is part of the coreboot project.
 *
 * Copyright (C) 2015  Damien Zammit <damien@zamaudio.com>
 *
 * 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; either version 2 of
 * the License, or (at your option) any later version.
 *
 * 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>

#define D0F0_PCIEXBAR_LO 0x60
#define TPMBASE 0xfed40000
#define TPM32(x) *((volatile u32 *)(TPMBASE + x))

static void bootblock_northbridge_init(void)
{
	uint32_t reg32;

	/* Disable LaGrande Technology (LT) */
	reg32 = TPM32(0);

	reg32 = CONFIG_MMCONF_BASE_ADDRESS | 16 | 1;
	pci_io_write_config32(PCI_DEV(0,0,0), D0F0_PCIEXBAR_LO, reg32);
}