preliminary Intel D945GCLF Atom+i945 support.

ram init fails, as the i945 driver currently only supports the mobile version
of the chipset..

Not sure how much sense it makes to check this in, but since it's a nice and
cheap board, maybe someone wants to work on this.

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4879 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 349 insertions, 0 deletions

diff --git a/src/mainboard/intel/d945gclf/auto.c b/src/mainboard/intel/d945gclf/auto.c
new file mode 100644
index 0000000000..342c71fe2c
--- /dev/null
+++ b/src/mainboard/intel/d945gclf/auto.c
@@ -0,0 +1,349 @@
+/*
+ * 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
+ */
+
+// __ROMCC__ means: use "unsigned" for device, not a struct.
+#define __ROMCC__ 
+
+#include <stdint.h>
+#include <string.h>
+#include <arch/io.h>
+#include <arch/romcc_io.h>
+#include <device/pci_def.h>
+#include <device/pnp_def.h>
+#include <cpu/x86/lapic.h>
+
+#include "superio/smsc/lpc47m15x/lpc47m15x.h"
+
+#include "option_table.h"
+#include "pc80/mc146818rtc_early.c"
+
+#include "pc80/serial.c"
+#include "arch/i386/lib/console.c"
+#include <cpu/x86/bist.h>
+
+#if CONFIG_USBDEBUG_DIRECT
+#define DBGP_DEFAULT 1
+#include "southbridge/intel/i82801gx/i82801gx_usb_debug.c"
+#include "pc80/usbdebug_direct_serial.c"
+#endif
+
+#include "lib/ramtest.c"
+#include "southbridge/intel/i82801gx/i82801gx_early_smbus.c"
+#include "reset.c"
+#include "superio/smsc/lpc47m15x/lpc47m15x_early_serial.c"
+
+#include "northbridge/intel/i945/udelay.c"
+
+#define SERIAL_DEV PNP_DEV(0x2e, W83627THG_SP1)
+
+#include "southbridge/intel/i82801gx/i82801gx.h"
+static void setup_ich7_gpios(void)
+{
+	/* TODO: This is highly board specific and should be moved */
+	printk_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 */
+}
+
+#include "northbridge/intel/i945/early_init.c"
+
+static inline int spd_read_byte(unsigned device, unsigned address)
+{
+	return smbus_read_byte(device, address);
+}
+
+#define CHANNEL_XOR_RANDOMIZATION 1
+#include "northbridge/intel/i945/raminit.h"
+#include "northbridge/intel/i945/raminit.c"
+#include "northbridge/intel/i945/reset_test.c"
+#include "northbridge/intel/i945/errata.c"
+#include "debug.c"
+
+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;
+}
+
+#if CONFIG_USE_FALLBACK_IMAGE == 1
+#include "southbridge/intel/i82801gx/cmos_failover.c"
+#endif
+
+#include <cbmem.h>
+
+// Now, this needs to be included because it relies on the symbol
+// __ROMCC_ being set during CAR stage (in order to compile the 
+// BSS free versions of the functions). Either rewrite the code
+// to be always BSS free, or invent a flag that's better suited than
+// __ROMCC__ to determine whether we're in ram init stage (stage 1)
+//
+#include "lib/cbmem.c"
+
+void real_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 */
+	uart_init();
+
+#if CONFIG_USBDEBUG_DIRECT
+	i82801gx_enable_usbdebug_direct(DBGP_DEFAULT);
+	early_usbdebug_direct_init();
+#endif
+
+	console_init();
+
+	/* Halt if there was a built in self test failure */
+	report_bist_failure(bist);
+
+	if (MCHBAR16(SSKPD) == 0xCAFE) {
+		printk_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_debug("PM1_CNT: %08x\n", reg32);
+	if (((reg32 >> 10) & 7) == 5) {
+#if CONFIG_HAVE_ACPI_RESUME
+		printk_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_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);
+
+	/* 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 defined(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_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, CONFIG_RAMBASE, HIGH_MEMORY_SAVE);
+
+		/* Magic for S3 resume */
+		pci_write_config32(PCI_DEV(0, 0x00, 0), SKPAD, 0xcafed00d);
+	}
+#endif
+}
+
+#include "cpu/intel/model_106cx/cache_as_ram_disable.c"