first round name simplification. drop the <component>_ prefix.

the prefix was introduced in the early v2 tree many years ago
because our old build system "newconfig" could not handle two files with
the same name in different paths like /path/to/usb.c and
/another/path/to/usb.c correctly. Only one of the files would end up
being compiled into the final image.

Since Kconfig (actually since shortly before we switched to Kconfig) we
don't suffer from that problem anymore. So we could drop the sb700_
prefix from all those filenames (or, the <componentname>_ prefix in general)

- makes it easier to fork off a new chipset
- makes it easier to diff against other chipsets
- storing redundant information in filenames seems wrong

Signed-off-by: <stepan@coresystems.de>

Acked-by: Patrick Georgi <patrick@georgi-clan.de>
Acked-by: Peter Stuge <peter@stuge.se>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6149 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 536 insertions, 0 deletions

diff --git a/src/southbridge/intel/i82801gx/lpc.c b/src/southbridge/intel/i82801gx/lpc.c
new file mode 100644
index 0000000000..f486c1ebf8
--- /dev/null
+++ b/src/southbridge/intel/i82801gx/lpc.c
@@ -0,0 +1,536 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2008-2009 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.
+ *
+ * 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
+ */
+
+#include <console/console.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <pc80/mc146818rtc.h>
+#include <pc80/isa-dma.h>
+#include <pc80/i8259.h>
+#include <arch/io.h>
+#include <arch/ioapic.h>
+#include "i82801gx.h"
+
+#define NMI_OFF	0
+
+#define ENABLE_ACPI_MODE_IN_COREBOOT	0
+#define TEST_SMM_FLASH_LOCKDOWN		0
+
+typedef struct southbridge_intel_i82801gx_config config_t;
+
+static void i82801gx_enable_apic(struct device *dev)
+{
+	int i;
+	u32 reg32;
+	volatile u32 *ioapic_index = (volatile u32 *)(IO_APIC_ADDR);
+	volatile u32 *ioapic_data = (volatile u32 *)(IO_APIC_ADDR + 0x10);
+
+	/* Enable ACPI I/O and power management.
+	 * Set SCI IRQ to IRQ9
+	 */
+	pci_write_config8(dev, ACPI_CNTL, 0x80);
+
+	*ioapic_index = 0;
+	*ioapic_data = (1 << 25);
+
+	*ioapic_index = 0;
+	reg32 = *ioapic_data;
+	printk(BIOS_DEBUG, "Southbridge APIC ID = %x\n", (reg32 >> 24) & 0x0f);
+	if (reg32 != (1 << 25))
+		die("APIC Error\n");
+
+	printk(BIOS_SPEW, "Dumping IOAPIC registers\n");
+	for (i=0; i<3; i++) {
+		*ioapic_index = i;
+		printk(BIOS_SPEW, "  reg 0x%04x:", i);
+		reg32 = *ioapic_data;
+		printk(BIOS_SPEW, " 0x%08x\n", reg32);
+	}
+
+	*ioapic_index = 3; /* Select Boot Configuration register. */
+	*ioapic_data = 1; /* Use Processor System Bus to deliver interrupts. */
+}
+
+static void i82801gx_enable_serial_irqs(struct device *dev)
+{
+	/* Set packet length and toggle silent mode bit for one frame. */
+	pci_write_config8(dev, SERIRQ_CNTL,
+			  (1 << 7) | (1 << 6) | ((21 - 17) << 2) | (0 << 0));
+}
+
+/* PIRQ[n]_ROUT[3:0] - PIRQ Routing Control
+ * 0x00 - 0000 = Reserved
+ * 0x01 - 0001 = Reserved
+ * 0x02 - 0010 = Reserved
+ * 0x03 - 0011 = IRQ3
+ * 0x04 - 0100 = IRQ4
+ * 0x05 - 0101 = IRQ5
+ * 0x06 - 0110 = IRQ6
+ * 0x07 - 0111 = IRQ7
+ * 0x08 - 1000 = Reserved
+ * 0x09 - 1001 = IRQ9
+ * 0x0A - 1010 = IRQ10
+ * 0x0B - 1011 = IRQ11
+ * 0x0C - 1100 = IRQ12
+ * 0x0D - 1101 = Reserved
+ * 0x0E - 1110 = IRQ14
+ * 0x0F - 1111 = IRQ15
+ * PIRQ[n]_ROUT[7] - PIRQ Routing Control
+ * 0x80 - The PIRQ is not routed.
+ */
+
+static void i82801gx_pirq_init(device_t dev)
+{
+	device_t irq_dev;
+	/* Get the chip configuration */
+	config_t *config = dev->chip_info;
+
+	pci_write_config8(dev, PIRQA_ROUT, config->pirqa_routing);
+	pci_write_config8(dev, PIRQB_ROUT, config->pirqb_routing);
+	pci_write_config8(dev, PIRQC_ROUT, config->pirqc_routing);
+	pci_write_config8(dev, PIRQD_ROUT, config->pirqd_routing);
+
+	pci_write_config8(dev, PIRQE_ROUT, config->pirqe_routing);
+	pci_write_config8(dev, PIRQF_ROUT, config->pirqf_routing);
+	pci_write_config8(dev, PIRQG_ROUT, config->pirqg_routing);
+	pci_write_config8(dev, PIRQH_ROUT, config->pirqh_routing);
+
+	/* Eric Biederman once said we should let the OS do this.
+	 * I am not so sure anymore he was right.
+	 */
+
+	for(irq_dev = all_devices; irq_dev; irq_dev = irq_dev->next) {
+		u8 int_pin=0, int_line=0;
+
+		if (!irq_dev->enabled || irq_dev->path.type != DEVICE_PATH_PCI)
+			continue;
+
+		int_pin = pci_read_config8(irq_dev, PCI_INTERRUPT_PIN);
+
+		switch (int_pin) {
+		case 1: /* INTA# */ int_line = config->pirqa_routing; break;
+		case 2: /* INTB# */ int_line = config->pirqb_routing; break;
+		case 3: /* INTC# */ int_line = config->pirqc_routing; break;
+		case 4: /* INTD# */ int_line = config->pirqd_routing; break;
+		}
+
+		if (!int_line)
+			continue;
+
+		pci_write_config8(irq_dev, PCI_INTERRUPT_LINE, int_line);
+	}
+}
+
+static void i82801gx_gpi_routing(device_t dev)
+{
+	/* Get the chip configuration */
+	config_t *config = dev->chip_info;
+	u32 reg32 = 0;
+
+	/* An array would be much nicer here, or some
+	 * other method of doing this.
+	 */
+	reg32 |= (config->gpi0_routing & 0x03) << 0;
+	reg32 |= (config->gpi1_routing & 0x03) << 2;
+	reg32 |= (config->gpi2_routing & 0x03) << 4;
+	reg32 |= (config->gpi3_routing & 0x03) << 6;
+	reg32 |= (config->gpi4_routing & 0x03) << 8;
+	reg32 |= (config->gpi5_routing & 0x03) << 10;
+	reg32 |= (config->gpi6_routing & 0x03) << 12;
+	reg32 |= (config->gpi7_routing & 0x03) << 14;
+	reg32 |= (config->gpi8_routing & 0x03) << 16;
+	reg32 |= (config->gpi9_routing & 0x03) << 18;
+	reg32 |= (config->gpi10_routing & 0x03) << 20;
+	reg32 |= (config->gpi11_routing & 0x03) << 22;
+	reg32 |= (config->gpi12_routing & 0x03) << 24;
+	reg32 |= (config->gpi13_routing & 0x03) << 26;
+	reg32 |= (config->gpi14_routing & 0x03) << 28;
+	reg32 |= (config->gpi15_routing & 0x03) << 30;
+
+	pci_write_config32(dev, 0xb8, reg32);
+}
+
+extern u8 acpi_slp_type;
+
+static void i82801gx_power_options(device_t dev)
+{
+	u8 reg8;
+	u16 reg16, pmbase;
+	u32 reg32;
+	const char *state;
+	/* Get the chip configuration */
+	config_t *config = dev->chip_info;
+
+	int pwr_on=CONFIG_MAINBOARD_POWER_ON_AFTER_POWER_FAIL;
+	int nmi_option;
+
+	/* Which state do we want to goto after g3 (power restored)?
+	 * 0 == S0 Full On
+	 * 1 == S5 Soft Off
+	 *
+	 * If the option is not existent (Laptops), use MAINBOARD_POWER_ON.
+	 */
+	if (get_option(&pwr_on, "power_on_after_fail") < 0)
+		pwr_on = MAINBOARD_POWER_ON;
+
+	reg8 = pci_read_config8(dev, GEN_PMCON_3);
+	reg8 &= 0xfe;
+	switch (pwr_on) {
+	case MAINBOARD_POWER_OFF:
+		reg8 |= 1;
+		state = "off";
+		break;
+	case MAINBOARD_POWER_ON:
+		reg8 &= ~1;
+		state = "on";
+		break;
+	case MAINBOARD_POWER_KEEP:
+		reg8 &= ~1;
+		state = "state keep";
+		break;
+	default:
+		state = "undefined";
+	}
+
+	reg8 |= (3 << 4);	/* avoid #S4 assertions */
+	reg8 &= ~(1 << 3);	/* minimum asssertion is 1 to 2 RTCCLK */
+
+	pci_write_config8(dev, GEN_PMCON_3, reg8);
+	printk(BIOS_INFO, "Set power %s after power failure.\n", state);
+
+	/* Set up NMI on errors. */
+	reg8 = inb(0x61);
+	reg8 &= 0x0f;		/* Higher Nibble must be 0 */
+	reg8 &= ~(1 << 3);	/* IOCHK# NMI Enable */
+	// reg8 &= ~(1 << 2);	/* PCI SERR# Enable */
+	reg8 |= (1 << 2); /* PCI SERR# Disable for now */
+	outb(reg8, 0x61);
+
+	reg8 = inb(0x70);
+	nmi_option = NMI_OFF;
+	get_option(&nmi_option, "nmi");
+	if (nmi_option) {
+		printk(BIOS_INFO, "NMI sources enabled.\n");
+		reg8 &= ~(1 << 7);	/* Set NMI. */
+	} else {
+		printk(BIOS_INFO, "NMI sources disabled.\n");
+		reg8 |= ( 1 << 7);	/* Can't mask NMI from PCI-E and NMI_NOW */
+	}
+	outb(reg8, 0x70);
+
+	/* Enable CPU_SLP# and Intel Speedstep, set SMI# rate down */
+	reg16 = pci_read_config16(dev, GEN_PMCON_1);
+	reg16 &= ~(3 << 0);	// SMI# rate 1 minute
+	reg16 |= (1 << 2);	// CLKRUN_EN - Mobile/Ultra only
+	reg16 |= (1 << 3);	// Speedstep Enable - Mobile/Ultra only
+	reg16 |= (1 << 5);	// CPUSLP_EN Desktop only
+	// another laptop wants this?
+	// reg16 &= ~(1 << 10);	// BIOS_PCI_EXP_EN - Desktop/Mobile only
+	reg16 |= (1 << 10);	// BIOS_PCI_EXP_EN - Desktop/Mobile only
+#if DEBUG_PERIODIC_SMIS
+	/* Set DEBUG_PERIODIC_SMIS in i82801gx.h to debug using
+	 * periodic SMIs.
+	 */
+	reg16 |= (3 << 0); // Periodic SMI every 8s
+#endif
+	pci_write_config16(dev, GEN_PMCON_1, reg16);
+
+	// Set the board's GPI routing.
+	i82801gx_gpi_routing(dev);
+
+	pmbase = pci_read_config16(dev, 0x40) & 0xfffe;
+
+	outl(config->gpe0_en, pmbase + GPE0_EN);
+	outw(config->alt_gp_smi_en, pmbase + ALT_GP_SMI_EN);
+
+	/* Set up power management block and determine sleep mode */
+	reg32 = inl(pmbase + 0x04); // PM1_CNT
+
+	reg32 &= ~(7 << 10);	// SLP_TYP
+	reg32 |= (1 << 1);	// enable C3->C0 transition on bus master
+	reg32 |= (1 << 0);	// SCI_EN
+	outl(reg32, pmbase + 0x04);
+}
+
+static void i82801gx_configure_cstates(device_t dev)
+{
+	u8 reg8;
+
+	reg8 = pci_read_config8(dev, 0xa9); // Cx state configuration
+	reg8 |= (1 << 4) | (1 << 3) | (1 << 2);	// Enable Popup & Popdown
+	pci_write_config8(dev, 0xa9, reg8);
+
+	// Set Deeper Sleep configuration to recommended values
+	reg8 = pci_read_config8(dev, 0xaa);
+	reg8 &= 0xf0;
+	reg8 |= (2 << 2);	// Deeper Sleep to Stop CPU: 34-40us
+	reg8 |= (2 << 0);	// Deeper Sleep to Sleep: 15us
+	pci_write_config8(dev, 0xaa, reg8);
+}
+
+static void i82801gx_rtc_init(struct device *dev)
+{
+	u8 reg8;
+	int rtc_failed;
+
+	reg8 = pci_read_config8(dev, GEN_PMCON_3);
+	rtc_failed = reg8 & RTC_BATTERY_DEAD;
+	if (rtc_failed) {
+		reg8 &= ~RTC_BATTERY_DEAD;
+		pci_write_config8(dev, GEN_PMCON_3, reg8);
+	}
+	printk(BIOS_DEBUG, "rtc_failed = 0x%x\n", rtc_failed);
+
+	rtc_init(rtc_failed);
+}
+
+static void enable_hpet(void)
+{
+	u32 reg32;
+
+	/* Move HPET to default address 0xfed00000 and enable it */
+	reg32 = RCBA32(HPTC);
+	reg32 |= (1 << 7); // HPET Address Enable
+	reg32 &= ~(3 << 0);
+	RCBA32(HPTC) = reg32;
+}
+
+static void enable_clock_gating(void)
+{
+	u32 reg32;
+
+	/* Enable Clock Gating for most devices */
+	reg32 = RCBA32(CG);
+	reg32 |= (1 << 31);	// LPC clock gating
+	reg32 |= (1 << 30);	// PATA clock gating
+	// SATA clock gating
+	reg32 |= (1 << 27) | (1 << 26) | (1 << 25) | (1 << 24);
+	reg32 |= (1 << 23);	// AC97 clock gating
+	reg32 |= (1 << 19);	// USB EHCI clock gating
+	reg32 |= (1 << 3) | (1 << 1);	// DMI clock gating
+	reg32 |= (1 << 2);	// PCIe clock gating;
+	reg32 &= ~(1 << 20); // No static clock gating for USB
+	reg32 &= ~( (1 << 29) | (1 << 28) ); // Disable UHCI clock gating
+	RCBA32(CG) = reg32;
+}
+
+#if CONFIG_HAVE_SMI_HANDLER
+static void i82801gx_lock_smm(struct device *dev)
+{
+	void smm_lock(void);
+#if TEST_SMM_FLASH_LOCKDOWN
+	u8 reg8;
+#endif
+
+#if ENABLE_ACPI_MODE_IN_COREBOOT
+	printk(BIOS_DEBUG, "Enabling ACPI via APMC:\n");
+	outb(0xe1, 0xb2); // Enable ACPI mode
+	printk(BIOS_DEBUG, "done.\n");
+#else
+	printk(BIOS_DEBUG, "Disabling ACPI via APMC:\n");
+	outb(0x1e, 0xb2); // Disable ACPI mode
+	printk(BIOS_DEBUG, "done.\n");
+#endif
+	/* Don't allow evil boot loaders, kernels, or
+	 * userspace applications to deceive us:
+	 */
+	smm_lock();
+
+#if TEST_SMM_FLASH_LOCKDOWN
+	/* Now try this: */
+	printk(BIOS_DEBUG, "Locking BIOS to RO... ");
+	reg8 = pci_read_config8(dev, 0xdc);	/* BIOS_CNTL */
+	printk(BIOS_DEBUG, " BLE: %s; BWE: %s\n", (reg8&2)?"on":"off",
+			(reg8&1)?"rw":"ro");
+	reg8 &= ~(1 << 0);			/* clear BIOSWE */
+	pci_write_config8(dev, 0xdc, reg8);
+	reg8 |= (1 << 1);			/* set BLE */
+	pci_write_config8(dev, 0xdc, reg8);
+	printk(BIOS_DEBUG, "ok.\n");
+	reg8 = pci_read_config8(dev, 0xdc);	/* BIOS_CNTL */
+	printk(BIOS_DEBUG, " BLE: %s; BWE: %s\n", (reg8&2)?"on":"off",
+			(reg8&1)?"rw":"ro");
+
+	printk(BIOS_DEBUG, "Writing:\n");
+	*(volatile u8 *)0xfff00000 = 0x00;
+	printk(BIOS_DEBUG, "Testing:\n");
+	reg8 |= (1 << 0);			/* set BIOSWE */
+	pci_write_config8(dev, 0xdc, reg8);
+
+	reg8 = pci_read_config8(dev, 0xdc);	/* BIOS_CNTL */
+	printk(BIOS_DEBUG, " BLE: %s; BWE: %s\n", (reg8&2)?"on":"off",
+			(reg8&1)?"rw":"ro");
+	printk(BIOS_DEBUG, "Done.\n");
+#endif
+}
+#endif
+
+#define SPIBASE 0x3020
+static void i82801gx_spi_init(void)
+{
+	u16 spicontrol;
+
+	spicontrol = RCBA16(SPIBASE + 2);
+	spicontrol &= ~(1 << 0); // SPI Access Request
+	RCBA16(SPIBASE + 2) = spicontrol;
+}
+
+static void i82801gx_fixups(struct device *dev)
+{
+	/* This needs to happen after PCI enumeration */
+	RCBA32(0x1d40) |= 1;
+
+	/* USB Transient Disconnect Detect:
+	 * Prevent a SE0 condition on the USB ports from being
+	 * interpreted by the UHCI controller as a disconnect
+	 */
+	pci_write_config8(dev, 0xad, 0x3);
+}
+
+static void lpc_init(struct device *dev)
+{
+	printk(BIOS_DEBUG, "i82801gx: lpc_init\n");
+
+	/* Set the value for PCI command register. */
+	pci_write_config16(dev, PCI_COMMAND, 0x000f);
+
+	/* IO APIC initialization. */
+	i82801gx_enable_apic(dev);
+
+	i82801gx_enable_serial_irqs(dev);
+
+	/* Setup the PIRQ. */
+	i82801gx_pirq_init(dev);
+
+	/* Setup power options. */
+	i82801gx_power_options(dev);
+
+	/* Configure Cx state registers */
+	i82801gx_configure_cstates(dev);
+
+	/* Set the state of the GPIO lines. */
+	//gpio_init(dev);
+
+	/* Initialize the real time clock. */
+	i82801gx_rtc_init(dev);
+
+	/* Initialize ISA DMA. */
+	isa_dma_init();
+
+	/* Initialize the High Precision Event Timers, if present. */
+	enable_hpet();
+
+	/* Initialize Clock Gating */
+	enable_clock_gating();
+
+	setup_i8259();
+
+	/* The OS should do this? */
+	/* Interrupt 9 should be level triggered (SCI) */
+	i8259_configure_irq_trigger(9, 1);
+
+#if CONFIG_HAVE_SMI_HANDLER
+	i82801gx_lock_smm(dev);
+#endif
+
+	i82801gx_spi_init();
+
+	i82801gx_fixups(dev);
+}
+
+static void i82801gx_lpc_read_resources(device_t dev)
+{
+	struct resource *res;
+
+	/* Get the normal PCI resources of this device. */
+	pci_dev_read_resources(dev);
+
+	/* Add an extra subtractive resource for both memory and I/O. */
+	res = new_resource(dev, IOINDEX_SUBTRACTIVE(0, 0));
+	res->base = 0;
+	res->size = 0x1000;
+	res->flags = IORESOURCE_IO | IORESOURCE_SUBTRACTIVE |
+		     IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
+
+	res = new_resource(dev, IOINDEX_SUBTRACTIVE(1, 0));
+	res->base = 0xff800000;
+	res->size = 0x00800000; /* 8 MB for flash */
+	res->flags = IORESOURCE_MEM | IORESOURCE_SUBTRACTIVE |
+		     IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
+
+	res = new_resource(dev, 3); /* IOAPIC */
+	res->base = IO_APIC_ADDR;
+	res->size = 0x00001000;
+	res->flags = IORESOURCE_MEM | IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
+}
+
+static void set_subsystem(device_t dev, unsigned vendor, unsigned device)
+{
+	if (!vendor || !device) {
+		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
+				pci_read_config32(dev, PCI_VENDOR_ID));
+	} else {
+		pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID,
+				((device & 0xffff) << 16) | (vendor & 0xffff));
+	}
+}
+
+static struct pci_operations pci_ops = {
+	.set_subsystem = set_subsystem,
+};
+
+static struct device_operations device_ops = {
+	.read_resources		= i82801gx_lpc_read_resources,
+	.set_resources		= pci_dev_set_resources,
+	.enable_resources	= pci_dev_enable_resources,
+	.init			= lpc_init,
+	.scan_bus		= scan_static_bus,
+	.enable			= i82801gx_enable,
+	.ops_pci		= &pci_ops,
+};
+
+/* 82801GH (ICH7 DH) */
+static const struct pci_driver ich7_dh_lpc __pci_driver = {
+	.ops	= &device_ops,
+	.vendor	= PCI_VENDOR_ID_INTEL,
+	.device	= 0x27b0,
+};
+
+/* 82801GB/GR (ICH7/ICH7R) */
+static const struct pci_driver ich7_ich7r_lpc __pci_driver = {
+	.ops	= &device_ops,
+	.vendor	= PCI_VENDOR_ID_INTEL,
+	.device	= 0x27b8,
+};
+
+/* 82801GBM/GU (ICH7-M/ICH7-U) */
+static const struct pci_driver ich7m_ich7u_lpc __pci_driver = {
+	.ops	= &device_ops,
+	.vendor	= PCI_VENDOR_ID_INTEL,
+	.device	= 0x27b9,
+};
+
+/* 82801GHM (ICH7-M DH) */
+static const struct pci_driver ich7m_dh_lpc __pci_driver = {
+	.ops	= &device_ops,
+	.vendor	= PCI_VENDOR_ID_INTEL,
+	.device	= 0x27bd,
+};