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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2007-2009 coresystems GmbH
*
* 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 <stdint.h>
#include <arch/io.h>
#include <cf9_reset.h>
#include <delay.h>
#include <device/pnp_ops.h>
#include <device/pci_ops.h>
#include <device/pci_def.h>
#include <cpu/x86/lapic.h>
#include <pc80/mc146818rtc.h>
#include <console/console.h>
#include <arch/romstage.h>
#include <northbridge/intel/i945/i945.h>
#include <northbridge/intel/i945/raminit.h>
#include <southbridge/intel/i82801gx/i82801gx.h>
#include <southbridge/intel/common/pmclib.h>
#include "option_table.h"
static void setup_special_ich7_gpios(void)
{
u32 gpios;
printk(BIOS_SPEW, "\n Initializing drive bay...\n");
gpios = inl(DEFAULT_GPIOBASE + 0x38); // GPIO Level 2
gpios |= (1 << 0); // GPIO33 = ODD
gpios |= (1 << 1); // GPIO34 = IDE_RST#
outl(gpios, DEFAULT_GPIOBASE + 0x38); /* GP_LVL2 */
gpios = inl(DEFAULT_GPIOBASE + 0x0c); // GPIO Level
gpios &= ~(1 << 13); // ??
outl(gpios, DEFAULT_GPIOBASE + 0x0c); /* GP_LVL */
printk(BIOS_SPEW, "\n Initializing Ethernet NIC...\n");
gpios = inl(DEFAULT_GPIOBASE + 0x0c); // GPIO Level
gpios &= ~(1 << 24); // Enable LAN Power
outl(gpios, DEFAULT_GPIOBASE + 0x0c); /* GP_LVL */
}
static void ich7_enable_lpc(void)
{
int lpt_en = 0;
if (read_option(lpt, 0) != 0)
lpt_en = LPT_LPC_EN;
// Enable Serial IRQ
pci_write_config8(PCI_DEV(0, 0x1f, 0), SERIRQ_CNTL, 0xd0);
// decode range
pci_write_config16(PCI_DEV(0, 0x1f, 0), LPC_IO_DEC, 0x0007);
// decode range
pci_write_config16(PCI_DEV(0, 0x1f, 0), LPC_EN, CNF2_LPC_EN | CNF1_LPC_EN
| MC_LPC_EN | KBC_LPC_EN | GAMEH_LPC_EN | GAMEL_LPC_EN
| FDD_LPC_EN| lpt_en | COMB_LPC_EN | COMA_LPC_EN);
// Enable 0x02e0 - 0x2ff
pci_write_config32(PCI_DEV(0, 0x1f, 0), GEN1_DEC, 0x001c02e1);
// Enable 0x600 - 0x6ff
pci_write_config32(PCI_DEV(0, 0x1f, 0), GEN2_DEC, 0x00fc0601);
// Enable 0x68 - 0x6f
pci_write_config32(PCI_DEV(0, 0x1f, 0), GEN3_DEC, 0x00040069);
}
/* This box has two superios, so enabling serial becomes slightly excessive.
* We disable a lot of stuff to make sure that there are no conflicts between
* the two. Also set up the GPIOs from the beginning. This is the "no schematic
* but safe anyways" method.
*/
static void pnp_enter_ext_func_mode(pnp_devfn_t dev)
{
unsigned int port = dev >> 8;
outb(0x55, port);
}
static void pnp_exit_ext_func_mode(pnp_devfn_t dev)
{
unsigned int port = dev >> 8;
outb(0xaa, port);
}
static void pnp_write_register(pnp_devfn_t dev, int reg, int val)
{
unsigned int port = dev >> 8;
outb(reg, port);
outb(val, port+1);
}
static void early_superio_config(void)
{
pnp_devfn_t dev;
dev = PNP_DEV(0x4e, 0x00);
pnp_enter_ext_func_mode(dev);
pnp_write_register(dev, 0x02, 0x0e); // UART power
pnp_write_register(dev, 0x1b, (0x3e8 >> 2)); // UART3 base
pnp_write_register(dev, 0x1c, (0x2e8 >> 2)); // UART4 base
pnp_write_register(dev, 0x1d, (5 << 4) | 11); // UART3,4 IRQ
pnp_write_register(dev, 0x1e, 1); // no 32khz clock
pnp_write_register(dev, 0x24, (0x3f8 >> 2)); // UART1 base
pnp_write_register(dev, 0x28, (4 << 4) | 0); // UART1,2 IRQ
pnp_write_register(dev, 0x2c, 0); // DMA0 FIR
pnp_write_register(dev, 0x30, (0x600 >> 4)); // Runtime Register Block Base
pnp_write_register(dev, 0x31, 0xce); // GPIO1 DIR
pnp_write_register(dev, 0x32, 0x00); // GPIO1 POL
pnp_write_register(dev, 0x33, 0x0f); // GPIO2 DIR
pnp_write_register(dev, 0x34, 0x00); // GPIO2 POL
pnp_write_register(dev, 0x35, 0xa8); // GPIO3 DIR
pnp_write_register(dev, 0x36, 0x00); // GPIO3 POL
pnp_write_register(dev, 0x37, 0xa8); // GPIO4 DIR
pnp_write_register(dev, 0x38, 0x00); // GPIO4 POL
pnp_write_register(dev, 0x39, 0x00); // GPIO1 OUT
pnp_write_register(dev, 0x40, 0x80); // GPIO2/MISC OUT
pnp_write_register(dev, 0x41, 0x00); // GPIO5 OUT
pnp_write_register(dev, 0x42, 0xa8); // GPIO5 DIR
pnp_write_register(dev, 0x43, 0x00); // GPIO5 POL
pnp_write_register(dev, 0x44, 0x00); // GPIO ALT1
pnp_write_register(dev, 0x45, 0x50); // GPIO ALT2
pnp_write_register(dev, 0x46, 0x00); // GPIO ALT3
pnp_write_register(dev, 0x48, 0x55); // GPIO ALT5
pnp_write_register(dev, 0x49, 0x55); // GPIO ALT6
pnp_write_register(dev, 0x4a, 0x55); // GPIO ALT7
pnp_write_register(dev, 0x4b, 0x55); // GPIO ALT8
pnp_write_register(dev, 0x4c, 0x55); // GPIO ALT9
pnp_write_register(dev, 0x4d, 0x55); // GPIO ALT10
pnp_exit_ext_func_mode(dev);
}
static void rcba_config(void)
{
/* Set up virtual channel 0 */
//RCBA32(0x0014) = 0x80000001;
/* Device 1f interrupt pin register */
RCBA32(D31IP) = 0x00042220;
/* Device 1d interrupt pin register */
RCBA32(D28IP) = 0x00214321;
/* dev irq route register */
RCBA16(D31IR) = 0x0232;
RCBA16(D30IR) = 0x3246;
RCBA16(D29IR) = 0x0237;
RCBA16(D28IR) = 0x3201;
RCBA16(D27IR) = 0x3216;
/* Enable IOAPIC */
RCBA8(OIC) = 0x03;
/* Disable unused devices */
RCBA32(FD) |= FD_INTLAN;
/* Enable PCIe Root Port Clock Gate */
// RCBA32(0x341c) = 0x00000001;
/* This should probably go into the ACPI enable trap */
/* Set up I/O Trap #0 for 0xfe00 (SMIC) */
RCBA32(0x1e84) = 0x00020001;
RCBA32(0x1e80) = 0x0000fe01;
/* Set up I/O Trap #3 for 0x800-0x80c (Trap) */
RCBA32(0x1e9c) = 0x000200f0;
RCBA32(0x1e98) = 0x000c0801;
}
static void early_ich7_init(void)
{
uint8_t reg8;
uint32_t reg32;
// program secondary mlt XXX byte?
pci_write_config8(PCI_DEV(0, 0x1e, 0), 0x1b, 0x20);
// reset rtc power status
reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xa4);
reg8 &= ~(1 << 2);
pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xa4, reg8);
// usb transient disconnect
reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xad);
reg8 |= (3 << 0);
pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xad, reg8);
reg32 = pci_read_config32(PCI_DEV(0, 0x1d, 7), 0xfc);
reg32 |= (1 << 29) | (1 << 17);
pci_write_config32(PCI_DEV(0, 0x1d, 7), 0xfc, reg32);
reg32 = pci_read_config32(PCI_DEV(0, 0x1d, 7), 0xdc);
reg32 |= (1 << 31) | (1 << 27);
pci_write_config32(PCI_DEV(0, 0x1d, 7), 0xdc, reg32);
RCBA32(0x0088) = 0x0011d000;
RCBA16(0x01fc) = 0x060f;
RCBA32(0x01f4) = 0x86000040;
RCBA32(0x0214) = 0x10030549;
RCBA32(0x0218) = 0x00020504;
RCBA8(0x0220) = 0xc5;
reg32 = RCBA32(0x3410);
reg32 |= (1 << 6);
RCBA32(0x3410) = reg32;
reg32 = RCBA32(0x3430);
reg32 &= ~(3 << 0);
reg32 |= (1 << 0);
RCBA32(0x3430) = reg32;
RCBA16(0x0200) = 0x2008;
RCBA8(0x2027) = 0x0d;
RCBA16(0x3e08) |= (1 << 7);
RCBA16(0x3e48) |= (1 << 7);
RCBA32(0x3e0e) |= (1 << 7);
RCBA32(0x3e4e) |= (1 << 7);
// next step only on ich7m b0 and later:
reg32 = RCBA32(0x2034);
reg32 &= ~(0x0f << 16);
reg32 |= (5 << 16);
RCBA32(0x2034) = reg32;
}
void mainboard_romstage_entry(void)
{
int s3resume = 0;
enable_lapic();
ich7_enable_lpc();
early_superio_config();
/* Set up the console */
console_init();
if (MCHBAR16(SSKPD) == 0xCAFE) {
printk(BIOS_DEBUG, "soft reset detected, rebooting properly\n");
system_reset();
}
/* Perform some early chipset initialization required
* before RAM initialization can work
*/
i945_early_initialization();
setup_special_ich7_gpios();
s3resume = southbridge_detect_s3_resume();
/* Enable SPD ROMs and DDR-II DRAM */
enable_smbus();
if (CONFIG(DEBUG_RAM_SETUP))
dump_spd_registers();
sdram_initialize(s3resume ? 2 : 0, NULL);
/* Perform some initialization that must run before stage2 */
early_ich7_init();
/* This should probably go away. Until now it is required
* and mainboard specific
*/
rcba_config();
/* Chipset Errata! */
fixup_i945_errata();
/* Initialize the internal PCIe links before we go into stage2 */
i945_late_initialization(s3resume);
}
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