| /* |
| * 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. |
| */ |
| |
| #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 setup_special_ich7_gpios(void) |
| { |
| u32 gpios; |
| |
| printk(BIOS_SPEW, "\n Initializing drive bay...\n"); |
| gpios = inl(DEFAULT_GPIOBASE + 0x38); // GPIO Level 2 |
| gpios |= (1 << 0); // GPIO33 = ODD |
| gpios |= (1 << 1); // GPIO34 = IDE_RST# |
| outl(gpios, DEFAULT_GPIOBASE + 0x38); /* GP_LVL2 */ |
| |
| gpios = inl(DEFAULT_GPIOBASE + 0x0c); // GPIO Level |
| gpios &= ~(1 << 13); // ?? |
| outl(gpios, DEFAULT_GPIOBASE + 0x0c); /* GP_LVL */ |
| |
| printk(BIOS_SPEW, "\n Initializing Ethernet NIC...\n"); |
| gpios = inl(DEFAULT_GPIOBASE + 0x0c); // GPIO Level |
| gpios &= ~(1 << 24); // Enable LAN Power |
| outl(gpios, DEFAULT_GPIOBASE + 0x0c); /* GP_LVL */ |
| } |
| |
| static void ich7_enable_lpc(void) |
| { |
| int lpt_en = 0; |
| if (read_option(lpt, 0) != 0) |
| lpt_en = LPT_LPC_EN; |
| |
| // 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); |
| // Enable 0x02e0 - 0x2ff |
| pci_write_config32(PCI_DEV(0, 0x1f, 0), GEN1_DEC, 0x001c02e1); |
| // Enable 0x600 - 0x6ff |
| pci_write_config32(PCI_DEV(0, 0x1f, 0), GEN2_DEC, 0x00fc0601); |
| // Enable 0x68 - 0x6f |
| 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 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(0x4e, 0x00); |
| |
| pnp_enter_ext_func_mode(dev); |
| pnp_write_register(dev, 0x02, 0x0e); // UART power |
| pnp_write_register(dev, 0x1b, (0x3e8 >> 2)); // UART3 base |
| pnp_write_register(dev, 0x1c, (0x2e8 >> 2)); // UART4 base |
| pnp_write_register(dev, 0x1d, (5 << 4) | 11); // UART3,4 IRQ |
| pnp_write_register(dev, 0x1e, 1); // no 32khz clock |
| pnp_write_register(dev, 0x24, (0x3f8 >> 2)); // UART1 base |
| pnp_write_register(dev, 0x28, (4 << 4) | 0); // UART1,2 IRQ |
| pnp_write_register(dev, 0x2c, 0); // DMA0 FIR |
| pnp_write_register(dev, 0x30, (0x600 >> 4)); // Runtime Register Block Base |
| |
| pnp_write_register(dev, 0x31, 0xce); // GPIO1 DIR |
| pnp_write_register(dev, 0x32, 0x00); // GPIO1 POL |
| pnp_write_register(dev, 0x33, 0x0f); // GPIO2 DIR |
| pnp_write_register(dev, 0x34, 0x00); // GPIO2 POL |
| pnp_write_register(dev, 0x35, 0xa8); // GPIO3 DIR |
| pnp_write_register(dev, 0x36, 0x00); // GPIO3 POL |
| pnp_write_register(dev, 0x37, 0xa8); // GPIO4 DIR |
| pnp_write_register(dev, 0x38, 0x00); // GPIO4 POL |
| |
| pnp_write_register(dev, 0x39, 0x00); // GPIO1 OUT |
| pnp_write_register(dev, 0x40, 0x80); // GPIO2/MISC OUT |
| pnp_write_register(dev, 0x41, 0x00); // GPIO5 OUT |
| pnp_write_register(dev, 0x42, 0xa8); // GPIO5 DIR |
| pnp_write_register(dev, 0x43, 0x00); // GPIO5 POL |
| pnp_write_register(dev, 0x44, 0x00); // GPIO ALT1 |
| pnp_write_register(dev, 0x45, 0x50); // GPIO ALT2 |
| pnp_write_register(dev, 0x46, 0x00); // GPIO ALT3 |
| |
| pnp_write_register(dev, 0x48, 0x55); // GPIO ALT5 |
| pnp_write_register(dev, 0x49, 0x55); // GPIO ALT6 |
| pnp_write_register(dev, 0x4a, 0x55); // GPIO ALT7 |
| pnp_write_register(dev, 0x4b, 0x55); // GPIO ALT8 |
| pnp_write_register(dev, 0x4c, 0x55); // GPIO ALT9 |
| pnp_write_register(dev, 0x4d, 0x55); // GPIO ALT10 |
| |
| pnp_exit_ext_func_mode(dev); |
| } |
| |
| static void rcba_config(void) |
| { |
| /* Set up virtual channel 0 */ |
| //RCBA32(0x0014) = 0x80000001; |
| //RCBA32(0x001c) = 0x03128010; |
| |
| /* Device 1f interrupt pin register */ |
| RCBA32(D31IP) = 0x00042220; |
| /* Device 1d interrupt pin register */ |
| RCBA32(D28IP) = 0x00214321; |
| |
| /* 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; |
| |
| /* Enable PCIe Root Port Clock Gate */ |
| // RCBA32(0x341c) = 0x00000001; |
| |
| /* This should probably go into the ACPI enable 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(0x3410); |
| reg32 |= (1 << 6); |
| RCBA32(0x3410) = 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(unsigned long bist) |
| { |
| int s3resume = 0; |
| |
| if (bist == 0) |
| enable_lapic(); |
| |
| #if 0 |
| /* 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); |
| #endif |
| |
| 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(); |
| |
| setup_special_ich7_gpios(); |
| |
| 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); |
| } |