| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2007-2010 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 <cf9_reset.h> |
| #include <delay.h> |
| #include <console/console.h> |
| #include <arch/romstage.h> |
| #include <cpu/x86/lapic.h> |
| #include <device/pci_def.h> |
| #include <device/pci_ops.h> |
| #include <device/pnp_ops.h> |
| #include <device/pnp_def.h> |
| #include <pc80/mc146818rtc.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 <superio/winbond/common/winbond.h> |
| #include <superio/winbond/w83627thg/w83627thg.h> |
| |
| #include "option_table.h" |
| |
| #define SERIAL_DEV PNP_DEV(0x2e, W83627THG_SP1) |
| |
| static void ich7_enable_lpc(void) |
| { |
| int lpt_en = 0; |
| if (read_option(lpt, 0) != 0) |
| lpt_en = LPT_LPC_EN; /* enable LPT */ |
| |
| /* Enable Serial IRQ */ |
| pci_write_config8(PCI_DEV(0, 0x1f, 0), SERIRQ_CNTL, 0xd0); |
| /* Set COM1/COM2 decode range */ |
| pci_write_config16(PCI_DEV(0, 0x1f, 0), LPC_IO_DEC, 0x0010); |
| /* Enable COM1/COM2/KBD/SuperIO1+2 */ |
| pci_write_config16(PCI_DEV(0, 0x1f, 0), LPC_EN, CNF2_LPC_EN |
| | CNF1_LPC_EN | KBC_LPC_EN | FDD_LPC_EN | COMA_LPC_EN |
| | COMB_LPC_EN | lpt_en); |
| /* Enable HWM at 0xa00 */ |
| pci_write_config32(PCI_DEV(0, 0x1f, 0), GEN1_DEC, 0x00fc0a01); |
| /* COM3 decode */ |
| pci_write_config32(PCI_DEV(0, 0x1f, 0), GEN2_DEC, 0x000403e9); |
| /* COM4 decode */ |
| pci_write_config32(PCI_DEV(0, 0x1f, 0), GEN3_DEC, 0x000402e9); |
| /* io 0x300 decode */ |
| pci_write_config32(PCI_DEV(0, 0x1f, 0), GEN4_DEC, 0x00000301); |
| } |
| |
| /* 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_w83627thg(void) |
| { |
| pnp_devfn_t dev; |
| |
| dev = PNP_DEV(0x2e, W83627THG_SP1); |
| pnp_enter_conf_state(dev); |
| |
| pnp_write_config(dev, 0x24, 0xc6); /* PNPCSV */ |
| |
| pnp_write_config(dev, 0x29, 0x43); /* GPIO settings */ |
| pnp_write_config(dev, 0x2a, 0x40); /* GPIO settings */ |
| |
| dev = PNP_DEV(0x2e, W83627THG_SP1); |
| 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); |
| |
| dev = PNP_DEV(0x2e, W83627THG_SP2); |
| pnp_set_logical_device(dev); |
| pnp_set_enable(dev, 0); |
| pnp_set_iobase(dev, PNP_IDX_IO0, 0x2f8); |
| pnp_set_irq(dev, PNP_IDX_IRQ0, 3); |
| pnp_set_enable(dev, 1); |
| |
| dev = PNP_DEV(0x2e, W83627THG_KBC); |
| pnp_set_logical_device(dev); |
| pnp_set_enable(dev, 0); |
| pnp_set_iobase(dev, PNP_IDX_IO0, 0x60); |
| pnp_set_iobase(dev, PNP_IDX_IO1, 0x64); |
| pnp_set_enable(dev, 1); |
| |
| dev = PNP_DEV(0x2e, W83627THG_GAME_MIDI_GPIO1); |
| pnp_set_logical_device(dev); |
| pnp_set_enable(dev, 0); |
| pnp_write_config(dev, 0xf5, 0xff); /* invert all GPIOs */ |
| pnp_set_enable(dev, 1); |
| |
| dev = PNP_DEV(0x2e, W83627THG_GPIO2); |
| pnp_set_logical_device(dev); |
| pnp_set_enable(dev, 1); /* Just enable it */ |
| |
| dev = PNP_DEV(0x2e, W83627THG_GPIO3); |
| pnp_set_logical_device(dev); |
| pnp_set_enable(dev, 0); |
| pnp_write_config(dev, 0xf0, 0xfb); /* GPIO bit 2 is output */ |
| pnp_write_config(dev, 0xf1, 0x00); /* GPIO bit 2 is 0 */ |
| pnp_write_config(dev, 0x30, 0x03); /* Enable GPIO3+4. pnp_set_enable is not sufficient */ |
| |
| dev = PNP_DEV(0x2e, W83627THG_FDC); |
| pnp_set_logical_device(dev); |
| pnp_set_enable(dev, 0); |
| |
| dev = PNP_DEV(0x2e, W83627THG_PP); |
| pnp_set_logical_device(dev); |
| pnp_set_enable(dev, 0); |
| |
| /* Enable HWM */ |
| dev = PNP_DEV(0x2e, W83627THG_HWM); |
| pnp_set_logical_device(dev); |
| pnp_set_enable(dev, 0); |
| pnp_set_iobase(dev, PNP_IDX_IO0, 0xa00); |
| pnp_set_enable(dev, 1); |
| |
| pnp_exit_conf_state(dev); |
| |
| dev = PNP_DEV(0x4e, W83627THG_SP1); |
| pnp_enter_conf_state(dev); |
| |
| pnp_set_logical_device(dev); /* Set COM3 to sane non-conflicting values */ |
| pnp_set_enable(dev, 0); |
| pnp_set_iobase(dev, PNP_IDX_IO0, 0x3e8); |
| pnp_set_irq(dev, PNP_IDX_IRQ0, 11); |
| pnp_set_enable(dev, 1); |
| |
| dev = PNP_DEV(0x4e, W83627THG_SP2); |
| pnp_set_logical_device(dev); /* Set COM4 to sane non-conflicting values */ |
| pnp_set_enable(dev, 0); |
| pnp_set_iobase(dev, PNP_IDX_IO0, 0x2e8); |
| pnp_set_irq(dev, PNP_IDX_IRQ0, 10); |
| pnp_set_enable(dev, 1); |
| |
| dev = PNP_DEV(0x4e, W83627THG_FDC); |
| pnp_set_logical_device(dev); |
| pnp_set_enable(dev, 0); |
| |
| dev = PNP_DEV(0x4e, W83627THG_PP); |
| pnp_set_logical_device(dev); |
| pnp_set_enable(dev, 0); |
| |
| dev = PNP_DEV(0x4e, W83627THG_KBC); |
| pnp_set_logical_device(dev); |
| pnp_set_enable(dev, 0); |
| pnp_set_iobase(dev, PNP_IDX_IO0, 0x00); |
| pnp_set_iobase(dev, PNP_IDX_IO1, 0x00); |
| |
| pnp_exit_conf_state(dev); |
| } |
| |
| static void rcba_config(void) |
| { |
| /* Set up virtual channel 0 */ |
| |
| /* Device 1f interrupt pin register */ |
| RCBA32(D31IP) = 0x00042210; |
| /* Device 1d interrupt pin register */ |
| RCBA32(D28IP) = 0x00214321; |
| |
| /* dev irq route register */ |
| RCBA16(D31IR) = 0x0132; |
| RCBA16(D30IR) = 0x3241; |
| RCBA16(D29IR) = 0x0237; |
| RCBA16(D28IR) = 0x3210; |
| RCBA16(D27IR) = 0x3210; |
| |
| /* Enable IOAPIC */ |
| RCBA8(OIC) = 0x03; |
| |
| /* Enable PCIe Root Port Clock Gate */ |
| |
| } |
| |
| 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(GCS); |
| reg32 |= (1 << 6); |
| RCBA32(GCS) = 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(); |
| |
| /* Force PCIRST# */ |
| pci_write_config16(PCI_DEV(0, 0x1e, 0), PCI_BRIDGE_CONTROL, PCI_BRIDGE_CTL_BUS_RESET); |
| udelay(200 * 1000); |
| pci_write_config16(PCI_DEV(0, 0x1e, 0), PCI_BRIDGE_CONTROL, 0); |
| |
| ich7_enable_lpc(); |
| early_superio_config_w83627thg(); |
| |
| /* 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(); |
| |
| 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); |
| } |