| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2007-2009 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. |
| */ |
| |
| /* __PRE_RAM__ means: use "unsigned" for device, not a struct. */ |
| |
| #include <stdint.h> |
| #include <string.h> |
| #include <arch/io.h> |
| #include <device/pnp_ops.h> |
| #include <device/pci_ops.h> |
| #include <device/pci_def.h> |
| #include <cpu/x86/lapic.h> |
| #include <arch/acpi.h> |
| #include <pc80/mc146818rtc.h> |
| #include <console/console.h> |
| #include <cpu/x86/bist.h> |
| #include <cpu/intel/romstage.h> |
| #include <halt.h> |
| #include <northbridge/intel/i945/i945.h> |
| #include <northbridge/intel/i945/raminit.h> |
| #include <southbridge/intel/i82801gx/i82801gx.h> |
| #include "option_table.h" |
| |
| 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); |
| /* decode range */ |
| pci_write_config16(PCI_DEV(0, 0x1f, 0), LPC_IO_DEC, 0x0007); |
| /* decode range */ |
| pci_write_config16(PCI_DEV(0, 0x1f, 0), LPC_EN, CNF2_LPC_EN | CNF1_LPC_EN |
| | MC_LPC_EN | KBC_LPC_EN | GAMEH_LPC_EN | GAMEL_LPC_EN |
| | FDD_LPC_EN | lpt_en | COMB_LPC_EN | COMA_LPC_EN); |
| /* COM3 and COM4 decode? */ |
| pci_write_config32(PCI_DEV(0, 0x1f, 0), GEN1_DEC, 0x1c02e1); |
| /* ??decode?? */ |
| pci_write_config32(PCI_DEV(0, 0x1f, 0), GEN2_DEC, 0x00fc0601); |
| /* EC decode? */ |
| pci_write_config32(PCI_DEV(0, 0x1f, 0), GEN3_DEC, 0x00040069); |
| } |
| |
| /* 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 inline void pnp_enter_ext_func_mode(pnp_devfn_t dev) |
| { |
| unsigned int port = dev >> 8; |
| outb(0x55, port); |
| } |
| |
| static void pnp_exit_ext_func_mode(pnp_devfn_t dev) |
| { |
| unsigned int port = dev >> 8; |
| outb(0xaa, port); |
| } |
| |
| static void pnp_write_register(pnp_devfn_t dev, int reg, int val) |
| { |
| unsigned int port = dev >> 8; |
| outb(reg, port); |
| outb(val, port+1); |
| } |
| |
| static void early_superio_config(void) |
| { |
| pnp_devfn_t dev; |
| |
| dev = PNP_DEV(0x2e, 0x00); |
| |
| pnp_enter_ext_func_mode(dev); |
| pnp_write_register(dev, 0x01, 0x94); /* Extended Parport modes */ |
| pnp_write_register(dev, 0x02, 0x88); /* UART power on */ |
| pnp_write_register(dev, 0x03, 0x72); /* Floppy */ |
| pnp_write_register(dev, 0x04, 0x01); /* EPP + SPP */ |
| pnp_write_register(dev, 0x14, 0x03); /* Floppy */ |
| pnp_write_register(dev, 0x20, (0x3f0 >> 2)); /* Floppy */ |
| pnp_write_register(dev, 0x23, (0x378 >> 2)); /* PP base */ |
| pnp_write_register(dev, 0x24, (0x3f8 >> 2)); /* UART1 base */ |
| pnp_write_register(dev, 0x25, (0x2f8 >> 2)); /* UART2 base */ |
| pnp_write_register(dev, 0x26, (2 << 4) | 0); /* FDC + PP DMA */ |
| pnp_write_register(dev, 0x27, (6 << 4) | 7); /* FDC + PP DMA */ |
| pnp_write_register(dev, 0x28, (4 << 4) | 3); /* UART1,2 IRQ */ |
| /* These are the SMI status registers in the SIO: */ |
| pnp_write_register(dev, 0x30, (0x600 >> 4)); /* Runtime Register Block Base */ |
| |
| pnp_write_register(dev, 0x31, 0x00); /* GPIO1 DIR */ |
| pnp_write_register(dev, 0x32, 0x00); /* GPIO1 POL */ |
| pnp_write_register(dev, 0x33, 0x40); /* GPIO2 DIR */ |
| pnp_write_register(dev, 0x34, 0x00); /* GPIO2 POL */ |
| pnp_write_register(dev, 0x35, 0xff); /* GPIO3 DIR */ |
| pnp_write_register(dev, 0x36, 0x00); /* GPIO3 POL */ |
| pnp_write_register(dev, 0x37, 0xe0); /* GPIO4 DIR */ |
| pnp_write_register(dev, 0x38, 0x00); /* GPIO4 POL */ |
| pnp_write_register(dev, 0x39, 0x80); /* GPIO4 POL */ |
| |
| pnp_exit_ext_func_mode(dev); |
| } |
| |
| static void rcba_config(void) |
| { |
| /* Set up virtual channel 0 */ |
| |
| /* Device 1f interrupt pin register */ |
| RCBA32(D31IP) = 0x00042220; |
| |
| /* dev irq route register */ |
| RCBA16(D31IR) = 0x0232; |
| RCBA16(D30IR) = 0x3246; |
| RCBA16(D29IR) = 0x0237; |
| RCBA16(D28IR) = 0x3201; |
| RCBA16(D27IR) = 0x3216; |
| |
| /* Enable IOAPIC */ |
| RCBA8(OIC) = 0x03; |
| |
| /* Disable unused devices */ |
| RCBA32(FD) |= FD_INTLAN; |
| |
| /* This should probably go into the ACPI OS Init trap */ |
| |
| /* Set up I/O Trap #0 for 0xfe00 (SMIC) */ |
| RCBA32(0x1e84) = 0x00020001; |
| RCBA32(0x1e80) = 0x0000fe01; |
| |
| /* Set up I/O Trap #3 for 0x800-0x80c (Trap) */ |
| RCBA32(0x1e9c) = 0x000200f0; |
| RCBA32(0x1e98) = 0x000c0801; |
| } |
| |
| 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; |
| } |
| |
| static void init_artec_dongle(void) |
| { |
| /* Enable 4MB decoding */ |
| outb(0xf1, 0x88); |
| outb(0xf4, 0x88); |
| } |
| |
| void mainboard_romstage_entry(unsigned long bist) |
| { |
| int s3resume = 0; |
| |
| if (bist == 0) |
| enable_lapic(); |
| |
| /* Force PCIRST# */ |
| pci_write_config16(PCI_DEV(0, 0x1e, 0), BCTRL, SBR); |
| udelay(200 * 1000); |
| pci_write_config16(PCI_DEV(0, 0x1e, 0), BCTRL, 0); |
| |
| ich7_enable_lpc(); |
| early_superio_config(); |
| |
| /* 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, rebooting properly\n"); |
| outb(0x6, 0xcf9); |
| halt(); |
| } |
| |
| /* Perform some early chipset initialization required |
| * before RAM initialization can work |
| */ |
| i945_early_initialization(); |
| |
| /* This has to happen after i945_early_initialization() */ |
| init_artec_dongle(); |
| |
| s3resume = southbridge_detect_s3_resume(); |
| |
| /* Enable SPD ROMs and DDR-II DRAM */ |
| enable_smbus(); |
| |
| #if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8 |
| dump_spd_registers(); |
| #endif |
| |
| 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); |
| } |