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/*
* 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 <console/console.h>
#include <device/pci_ops.h>
#include <device/pci_def.h>
#include <northbridge/intel/pineview/pineview.h>
#include <northbridge/intel/pineview/chip.h>
#include <option.h>
#include <types.h>
#define LPC PCI_DEV(0, 0x1f, 0)
#define D0F0 PCI_DEV(0, 0, 0)
#define PCI_GCFC 0xf0
#define MCH_GCFGC 0xc8c
#define CRCLK_PINEVIEW 0x02
#define CDCLK_PINEVIEW 0x10
#define MCH_HPLLVCO 0xc38
static void early_graphics_setup(void)
{
u8 reg8;
u16 reg16;
u32 reg32;
const struct device *d0f0 = pcidev_on_root(0, 0);
const struct northbridge_intel_pineview_config *config = d0f0->chip_info;
pci_write_config8(D0F0, DEVEN, BOARD_DEVEN);
/* vram size from CMOS option */
if (get_option(®8, "gfx_uma_size") != CB_SUCCESS)
reg8 = 0; /* 0 for 8MB */
/* make sure no invalid setting is used */
if (reg8 > 6)
reg8 = 0;
/* Select 1M GTT */
pci_write_config16(PCI_DEV(0, 0x00, 0), GGC, (1 << 8)
| ((reg8 + 3) << 4));
printk(BIOS_SPEW, "Set GFX clocks...");
reg16 = MCHBAR16(MCH_GCFGC);
MCHBAR16(MCH_GCFGC) = reg16 | (1 << 9);
reg16 &= ~0x7f;
reg16 |= CDCLK_PINEVIEW | CRCLK_PINEVIEW;
reg16 &= ~(1 << 9);
MCHBAR16(MCH_GCFGC) = reg16;
/* Graphics core */
reg8 = MCHBAR8(MCH_HPLLVCO);
reg8 &= 0x7;
reg16 = pci_read_config16(PCI_DEV(0,2,0), 0xcc) & ~0x1ff;
if (reg8 == 0x4) {
/* 2666MHz */
reg16 |= 0xad;
} else if (reg8 == 0) {
/* 3200MHz */
reg16 |= 0xa0;
} else if (reg8 == 1) {
/* 4000MHz */
reg16 |= 0xad;
}
pci_write_config16(PCI_DEV(0,2,0), 0xcc, reg16);
pci_write_config8(PCI_DEV(0,2,0), 0x62,
pci_read_config8(PCI_DEV(0,2,0), 0x62) & ~0x3);
pci_write_config8(PCI_DEV(0,2,0), 0x62,
pci_read_config8(PCI_DEV(0,2,0), 0x62) | 2);
if (config->use_crt) {
/* Enable VGA */
MCHBAR32(0xb08) = MCHBAR32(0xb08) | (1 << 15);
} else {
/* Disable VGA */
MCHBAR32(0xb08) = MCHBAR32(0xb08) & ~(1 << 15);
}
if (config->use_lvds) {
/* Enable LVDS */
reg32 = MCHBAR32(0x3004);
reg32 &= ~0xf1000000;
reg32 |= 0x90000000;
MCHBAR32(0x3004) = reg32;
MCHBAR32(0x3008) = MCHBAR32(0x3008) | (1 << 9);
} else {
/* Disable LVDS */
MCHBAR32(0xb08) = MCHBAR32(0xb08) | (3 << 25);
}
MCHBAR32(0xff4) = 0x0c6db8b5f;
MCHBAR16(0xff8) = 0x24f;
MCHBAR32(0xb08) = MCHBAR32(0xb08) & 0xffffff00;
MCHBAR32(0xb08) = MCHBAR32(0xb08) | (1 << 5);
/* Legacy backlight control */
pci_write_config8(PCI_DEV(0, 2, 0), 0xf4, 0x4c);
}
static void early_misc_setup(void)
{
MCHBAR32(0x30);
MCHBAR32(0x30) = 0x21800;
DMIBAR32(0x2c) = 0x86000040;
pci_write_config32(PCI_DEV(0, 0x1e, 0), 0x18, 0x00020200);
pci_write_config32(PCI_DEV(0, 0x1e, 0), 0x18, 0x00000000);
early_graphics_setup();
MCHBAR32(0x40);
MCHBAR32(0x40) = 0x0;
MCHBAR32(0x40);
MCHBAR32(0x40) = 0x8;
pci_write_config8(LPC, 0x8, 0x1d);
pci_write_config8(LPC, 0x8, 0x0);
RCBA32(0x3410) = 0x00020465;
pci_write_config32(PCI_DEV(0, 0x1d, 0), 0xca, 0x1);
pci_write_config32(PCI_DEV(0, 0x1d, 1), 0xca, 0x1);
pci_write_config32(PCI_DEV(0, 0x1d, 2), 0xca, 0x1);
pci_write_config32(PCI_DEV(0, 0x1d, 3), 0xca, 0x1);
RCBA32(0x3100) = 0x42210;
RCBA32(0x3108) = 0x10004321;
RCBA32(0x310c) = 0x00214321;
RCBA32(0x3110) = 0x1;
RCBA32(0x3140) = 0x01460132;
RCBA32(0x3142) = 0x02370146;
RCBA32(0x3144) = 0x32010237;
RCBA32(0x3146) = 0x01463201;
RCBA32(0x3148) = 0x146;
}
static void pineview_setup_bars(void)
{
printk(BIOS_DEBUG, "Setting up static northbridge registers...");
pci_write_config8(D0F0, 0x8, 0x69);
/* Set up all hardcoded northbridge BARs */
pci_write_config32(D0F0, EPBAR, DEFAULT_EPBAR | 1);
pci_write_config32(D0F0, MCHBAR, (uintptr_t)DEFAULT_MCHBAR | 1);
pci_write_config32(D0F0, DMIBAR, (uintptr_t)DEFAULT_DMIBAR | 1);
pci_write_config32(D0F0, PMIOBAR, (uintptr_t)0x400 | 1);
/* Set C0000-FFFFF to access RAM on both reads and writes */
pci_write_config8(D0F0, PAM0, 0x30);
pci_write_config8(D0F0, PAM1, 0x33);
pci_write_config8(D0F0, PAM2, 0x33);
pci_write_config8(D0F0, PAM3, 0x33);
pci_write_config8(D0F0, PAM4, 0x33);
pci_write_config8(D0F0, PAM5, 0x33);
pci_write_config8(D0F0, PAM6, 0x33);
printk(BIOS_DEBUG, " done.\n");
}
void pineview_early_initialization(void)
{
/* Print some chipset specific information */
printk(BIOS_DEBUG, "Intel Pineview northbridge\n");
/* Setup all BARs required for early PCIe and raminit */
pineview_setup_bars();
/* Miscellaneous set up */
early_misc_setup();
/* Change port80 to LPC */
RCBA32(GCS) &= (~0x04);
RCBA32(0x2010) |= (1 << 10);
}
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