src/mainboard/intel/d945gclf/romstage.c - mirrors/cros/chromiumos/third_party/coreboot - Git at Google

 /*
  * This file is part of the coreboot project.
  *
  * Copyright (C) 2007-2008 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.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  */

 // __PRE_RAM__ means: use "unsigned" for device, not a struct.

 #include <stdint.h>
 #include <string.h>
 #include <arch/io.h>
 #include <device/pci_def.h>
 #include <device/pnp_def.h>
 #include <cpu/x86/lapic.h>
 #include <lib.h>
 #include "superio/smsc/lpc47m15x/lpc47m15x.h"
 #include <pc80/mc146818rtc.h>
 #include <console/console.h>
 #include <cpu/x86/bist.h>
 #include "superio/smsc/lpc47m15x/early_serial.c"
 #include "northbridge/intel/i945/i945.h"
 #include "northbridge/intel/i945/raminit.h"
 #include "southbridge/intel/i82801gx/i82801gx.h"

 #define SERIAL_DEV PNP_DEV(0x2e, W83627THG_SP1)

 void setup_ich7_gpios(void)
 {
 	/* TODO: This is highly board specific and should be moved */
 	printk(BIOS_DEBUG, " GPIOS...");
 	/* General Registers */
 	outl(0x3f3df7c1, DEFAULT_GPIOBASE + 0x00);	/* GPIO_USE_SEL */
 	outl(0xc6fcbfc3, DEFAULT_GPIOBASE + 0x04);	/* GP_IO_SEL */
 	outl(0xecfefdff, DEFAULT_GPIOBASE + 0x0c);	/* GP_LVL */
 	/* Output Control Registers */
 	outl(0x00040000, DEFAULT_GPIOBASE + 0x18);	/* GPO_BLINK */
 	/* Input Control Registers */
 	outl(0x0000a000, DEFAULT_GPIOBASE + 0x2c);	/* GPI_INV */
 	outl(0x000000ff, DEFAULT_GPIOBASE + 0x30);	/* GPIO_USE_SEL2 */
 	outl(0x000000bf, DEFAULT_GPIOBASE + 0x34);	/* GP_IO_SEL2 */
 	outl(0x000300fd, DEFAULT_GPIOBASE + 0x38);	/* GP_LVL */
 }

 static void ich7_enable_lpc(void)
 {
 	// Enable Serial IRQ
 	pci_write_config8(PCI_DEV(0, 0x1f, 0), 0x64, 0xd0);
 	// Set COM1/COM2 decode range
 	pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x80, 0x0010);
 	// Enable COM1
 	pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x82, 0x140d);
 	// Enable SuperIO Power Management Events
 	pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x84, 0x007c0681);
 }

 /* 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 early_superio_config_lpc47m15x(void)
 {
 	device_t dev;

 	dev=PNP_DEV(0x2e, LPC47M15X_SP1);
 	pnp_enter_conf_state(dev);

 	pnp_set_logical_device(dev);
 	pnp_set_enable(dev, 0);
 	pnp_set_iobase(dev, PNP_IDX_IO0, 0x3f8);
 	pnp_set_irq(dev, PNP_IDX_IRQ0, 4);
 	pnp_set_enable(dev, 1);

 	/* Enable SuperIO PM */
 	dev=PNP_DEV(0x2e, LPC47M15X_PME);
 	pnp_set_logical_device(dev);
 	pnp_set_enable(dev, 0);
 	pnp_set_iobase(dev, PNP_IDX_IO0, 0x680);
 	pnp_set_enable(dev, 1);

 	pnp_exit_conf_state(dev);
 }

 static void rcba_config(void)
 {
 	/* Set up virtual channel 0 */
 	//RCBA32(0x0014) = 0x80000001;
 	//RCBA32(0x001c) = 0x03128010;

 	/* Device 1f interrupt pin register */
 	RCBA32(0x3100) = 0x00042210;
 	/* Device 1d interrupt pin register */
 	RCBA32(0x310c) = 0x00214321;

 	/* dev irq route register */
 	RCBA16(0x3140) = 0x0132;
 	RCBA16(0x3142) = 0x0146;
 	RCBA16(0x3144) = 0x0237;
 	RCBA16(0x3146) = 0x3201;
 	RCBA16(0x3148) = 0x0146;

 	/* Enable IOAPIC */
 	RCBA8(0x31ff) = 0x03;

 	/* Enable upper 128bytes of CMOS */
 	RCBA32(0x3400) = (1 << 2);

 	/* Disable unused devices */
 	//RCBA32(0x3418) = FD_PCIE6|FD_PCIE5|FD_PCIE4|FD_ACMOD|FD_ACAUD|FD_PATA;
 	// RCBA32(0x3418) |= (1 << 0); // Required.
 	// FIXME look me up!
 	RCBA32(0x3418) = 0x003204e1;

 	/* Enable PCIe Root Port Clock Gate */
 	// RCBA32(0x341c) = 0x00000001;
 }

 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;
 	RCBA32(0x3418) |= (1 << 0);
 	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;
 }

 #include <cbmem.h>

 void main(unsigned long bist)
 {
 	u32 reg32;
 	int boot_mode = 0;

 	if (bist == 0)
 		enable_lapic();

 	ich7_enable_lpc();
 	early_superio_config_lpc47m15x();

 	/* Set up the console */
 	console_init();

 	/* Halt if there was a built in self test failure */
 	report_bist_failure(bist);

 	if (MCHBAR16(SSKPD) == 0xCAFE) {
 		printk(BIOS_DEBUG, "soft reset detected.\n");
 		boot_mode = 1;
 	}

 	/* Perform some early chipset initialization required
 	 * before RAM initialization can work
 	 */
 	i945_early_initialization();

         /* Read PM1_CNT */
 	reg32 = inl(DEFAULT_PMBASE + 0x04);
 	printk(BIOS_DEBUG, "PM1_CNT: %08x\n", reg32);
 	if (((reg32 >> 10) & 7) == 5) {
 #if CONFIG_HAVE_ACPI_RESUME
 		printk(BIOS_DEBUG, "Resume from S3 detected.\n");
 		boot_mode = 2;
 		/* Clear SLP_TYPE. This will break stage2 but
 		 * we care for that when we get there.
 		 */
 		outl(reg32 & ~(7 << 10), DEFAULT_PMBASE + 0x04);
 #else
 		printk(BIOS_DEBUG, "Resume from S3 detected, but disabled.\n");
 #endif
 	}

 	/* Enable SPD ROMs and DDR-II DRAM */
 	enable_smbus();

 #if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8
 	dump_spd_registers();
 #endif

 	sdram_initialize(boot_mode, 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();

 #if !CONFIG_HAVE_ACPI_RESUME
 #if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8
 #if CONFIG_DEBUG_RAM_SETUP
 	sdram_dump_mchbar_registers();
 #endif

 	{
 		/* This will not work if TSEG is in place! */
 		u32 tom = pci_read_config32(PCI_DEV(0,2,0), 0x5c);

 		printk(BIOS_DEBUG, "TOM: 0x%08x\n", tom);
 		ram_check(0x00000000, 0x000a0000);
 		//ram_check(0x00100000, tom);
 	}
 #endif
 #endif

 	MCHBAR16(SSKPD) = 0xCAFE;

 #if CONFIG_HAVE_ACPI_RESUME
 	/* Start address of high memory tables */
 	unsigned long high_ram_base = get_top_of_ram() - HIGH_MEMORY_SIZE;

 	/* If there is no high memory area, we didn't boot before, so
 	 * this is not a resume. In that case we just create the cbmem toc.
 	 */
 	if ((boot_mode == 2) && cbmem_reinit((u64)high_ram_base)) {
 		void *resume_backup_memory = cbmem_find(CBMEM_ID_RESUME);

 		/* copy 1MB - 64K to high tables ram_base to prevent memory corruption
 		 * through stage 2. We could keep stuff like stack and heap in high tables
 		 * memory completely, but that's a wonderful clean up task for another
 		 * day.
 		 */
 		if (resume_backup_memory)
 			memcpy(resume_backup_memory, (void *)CONFIG_RAMBASE, HIGH_MEMORY_SAVE);

 		/* Magic for S3 resume */
 		pci_write_config32(PCI_DEV(0, 0x00, 0), SKPAD, SKPAD_ACPI_S3_MAGIC);
 	}
 #endif
 }
	/*
	* This file is part of the coreboot project.
	*
	* Copyright (C) 2007-2008 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.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	*/

	// __PRE_RAM__ means: use "unsigned" for device, not a struct.

	#include <stdint.h>
	#include <string.h>
	#include <arch/io.h>
	#include <device/pci_def.h>
	#include <device/pnp_def.h>
	#include <cpu/x86/lapic.h>
	#include <lib.h>
	#include "superio/smsc/lpc47m15x/lpc47m15x.h"
	#include <pc80/mc146818rtc.h>
	#include <console/console.h>
	#include <cpu/x86/bist.h>
	#include "superio/smsc/lpc47m15x/early_serial.c"
	#include "northbridge/intel/i945/i945.h"
	#include "northbridge/intel/i945/raminit.h"
	#include "southbridge/intel/i82801gx/i82801gx.h"

	#define SERIAL_DEV PNP_DEV(0x2e, W83627THG_SP1)

	void setup_ich7_gpios(void)
	{
	/* TODO: This is highly board specific and should be moved */
	printk(BIOS_DEBUG, " GPIOS...");
	/* General Registers */
	outl(0x3f3df7c1, DEFAULT_GPIOBASE + 0x00); /* GPIO_USE_SEL */
	outl(0xc6fcbfc3, DEFAULT_GPIOBASE + 0x04); /* GP_IO_SEL */
	outl(0xecfefdff, DEFAULT_GPIOBASE + 0x0c); /* GP_LVL */
	/* Output Control Registers */
	outl(0x00040000, DEFAULT_GPIOBASE + 0x18); /* GPO_BLINK */
	/* Input Control Registers */
	outl(0x0000a000, DEFAULT_GPIOBASE + 0x2c); /* GPI_INV */
	outl(0x000000ff, DEFAULT_GPIOBASE + 0x30); /* GPIO_USE_SEL2 */
	outl(0x000000bf, DEFAULT_GPIOBASE + 0x34); /* GP_IO_SEL2 */
	outl(0x000300fd, DEFAULT_GPIOBASE + 0x38); /* GP_LVL */
	}

	static void ich7_enable_lpc(void)
	{
	// Enable Serial IRQ
	pci_write_config8(PCI_DEV(0, 0x1f, 0), 0x64, 0xd0);
	// Set COM1/COM2 decode range
	pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x80, 0x0010);
	// Enable COM1
	pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x82, 0x140d);
	// Enable SuperIO Power Management Events
	pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x84, 0x007c0681);
	}

	/* 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 early_superio_config_lpc47m15x(void)
	{
	device_t dev;

	dev=PNP_DEV(0x2e, LPC47M15X_SP1);
	pnp_enter_conf_state(dev);

	pnp_set_logical_device(dev);
	pnp_set_enable(dev, 0);
	pnp_set_iobase(dev, PNP_IDX_IO0, 0x3f8);
	pnp_set_irq(dev, PNP_IDX_IRQ0, 4);
	pnp_set_enable(dev, 1);

	/* Enable SuperIO PM */
	dev=PNP_DEV(0x2e, LPC47M15X_PME);
	pnp_set_logical_device(dev);
	pnp_set_enable(dev, 0);
	pnp_set_iobase(dev, PNP_IDX_IO0, 0x680);
	pnp_set_enable(dev, 1);

	pnp_exit_conf_state(dev);
	}

	static void rcba_config(void)
	{
	/* Set up virtual channel 0 */
	//RCBA32(0x0014) = 0x80000001;
	//RCBA32(0x001c) = 0x03128010;

	/* Device 1f interrupt pin register */
	RCBA32(0x3100) = 0x00042210;
	/* Device 1d interrupt pin register */
	RCBA32(0x310c) = 0x00214321;

	/* dev irq route register */
	RCBA16(0x3140) = 0x0132;
	RCBA16(0x3142) = 0x0146;
	RCBA16(0x3144) = 0x0237;
	RCBA16(0x3146) = 0x3201;
	RCBA16(0x3148) = 0x0146;

	/* Enable IOAPIC */
	RCBA8(0x31ff) = 0x03;

	/* Enable upper 128bytes of CMOS */
	RCBA32(0x3400) = (1 << 2);

	/* Disable unused devices */
	//RCBA32(0x3418) = FD_PCIE6\|FD_PCIE5\|FD_PCIE4\|FD_ACMOD\|FD_ACAUD\|FD_PATA;
	// RCBA32(0x3418) \|= (1 << 0); // Required.
	// FIXME look me up!
	RCBA32(0x3418) = 0x003204e1;

	/* Enable PCIe Root Port Clock Gate */
	// RCBA32(0x341c) = 0x00000001;
	}

	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;
	RCBA32(0x3418) \|= (1 << 0);
	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;
	}

	#include <cbmem.h>

	void main(unsigned long bist)
	{
	u32 reg32;
	int boot_mode = 0;

	if (bist == 0)
	enable_lapic();

	ich7_enable_lpc();
	early_superio_config_lpc47m15x();

	/* Set up the console */
	console_init();

	/* Halt if there was a built in self test failure */
	report_bist_failure(bist);

	if (MCHBAR16(SSKPD) == 0xCAFE) {
	printk(BIOS_DEBUG, "soft reset detected.\n");
	boot_mode = 1;
	}

	/* Perform some early chipset initialization required
	* before RAM initialization can work
	*/
	i945_early_initialization();

	/* Read PM1_CNT */
	reg32 = inl(DEFAULT_PMBASE + 0x04);
	printk(BIOS_DEBUG, "PM1_CNT: %08x\n", reg32);
	if (((reg32 >> 10) & 7) == 5) {
	#if CONFIG_HAVE_ACPI_RESUME
	printk(BIOS_DEBUG, "Resume from S3 detected.\n");
	boot_mode = 2;
	/* Clear SLP_TYPE. This will break stage2 but
	* we care for that when we get there.
	*/
	outl(reg32 & ~(7 << 10), DEFAULT_PMBASE + 0x04);
	#else
	printk(BIOS_DEBUG, "Resume from S3 detected, but disabled.\n");
	#endif
	}

	/* Enable SPD ROMs and DDR-II DRAM */
	enable_smbus();

	#if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8
	dump_spd_registers();
	#endif

	sdram_initialize(boot_mode, 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();

	#if !CONFIG_HAVE_ACPI_RESUME
	#if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8
	#if CONFIG_DEBUG_RAM_SETUP
	sdram_dump_mchbar_registers();
	#endif

	{
	/* This will not work if TSEG is in place! */
	u32 tom = pci_read_config32(PCI_DEV(0,2,0), 0x5c);

	printk(BIOS_DEBUG, "TOM: 0x%08x\n", tom);
	ram_check(0x00000000, 0x000a0000);
	//ram_check(0x00100000, tom);
	}
	#endif
	#endif

	MCHBAR16(SSKPD) = 0xCAFE;

	#if CONFIG_HAVE_ACPI_RESUME
	/* Start address of high memory tables */
	unsigned long high_ram_base = get_top_of_ram() - HIGH_MEMORY_SIZE;

	/* If there is no high memory area, we didn't boot before, so
	* this is not a resume. In that case we just create the cbmem toc.
	*/
	if ((boot_mode == 2) && cbmem_reinit((u64)high_ram_base)) {
	void *resume_backup_memory = cbmem_find(CBMEM_ID_RESUME);

	/* copy 1MB - 64K to high tables ram_base to prevent memory corruption
	* through stage 2. We could keep stuff like stack and heap in high tables
	* memory completely, but that's a wonderful clean up task for another
	* day.
	*/
	if (resume_backup_memory)
	memcpy(resume_backup_memory, (void *)CONFIG_RAMBASE, HIGH_MEMORY_SAVE);

	/* Magic for S3 resume */
	pci_write_config32(PCI_DEV(0, 0x00, 0), SKPAD, SKPAD_ACPI_S3_MAGIC);
	}
	#endif
	}