diff options
Diffstat (limited to 'src/mainboard/intel/d945gclf/romstage.c')
| -rw-r--r-- | src/mainboard/intel/d945gclf/romstage.c | 349 |
1 files changed, 349 insertions, 0 deletions
diff --git a/src/mainboard/intel/d945gclf/romstage.c b/src/mainboard/intel/d945gclf/romstage.c new file mode 100644 index 000000000000..8d1dc1681500 --- /dev/null +++ b/src/mainboard/intel/d945gclf/romstage.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 + */ + +// __PRE_RAM__ means: use "unsigned" for device, not a struct. +#define __PRE_RAM__ + +/* Configuration of the i945 driver */ +#define CHIPSET_I945GC 1 +#define CHANNEL_XOR_RANDOMIZATION 1 + +#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 "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); +} + +#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 "northbridge/intel/i945/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 +// __PRE_RAM__ 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 +// __PRE_RAM__ 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" |