| /* |
| * 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. |
| * |
| * 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 |
| */ |
| |
| /* Configuration of the i945 driver */ |
| #define CHIPSET_I945GM 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 "option_table.h" |
| #include "pc80/mc146818rtc_early.c" |
| |
| #include <console/console.h> |
| #include <cpu/x86/bist.h> |
| |
| #if CONFIG_USBDEBUG_DIRECT |
| #define DBGP_DEFAULT 0 |
| #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 "northbridge/intel/i945/udelay.c" |
| |
| #include "southbridge/intel/i82801gx/i82801gx.h" |
| static void setup_ich7_gpios(void) |
| { |
| u32 gpios; |
| |
| printk(BIOS_DEBUG, " GPIOS..."); |
| /* General Registers */ |
| outl(0x1f28f7c2, DEFAULT_GPIOBASE + 0x00); /* GPIO_USE_SEL */ |
| outl(0xe0e809c3, DEFAULT_GPIOBASE + 0x04); /* GP_IO_SEL */ |
| // Power On value is eede1fbf, we set: (TODO explain why) |
| // -- [21] = 1 |
| // -- [20] = 0 |
| // -- [18] = 0 |
| // -- [17] = 0 |
| // -- [13] = 1 |
| // -- [05] = 0 |
| // -- [04] = 0 |
| // -- [03] = 0 |
| // -- [02] = 0 |
| // We should probably do this explicitly bitwise, see below. |
| outl(0xeee83f83, DEFAULT_GPIOBASE + 0x0c); /* GP_LVL */ |
| /* Output Control Registers */ |
| outl(0x00000000, DEFAULT_GPIOBASE + 0x18); /* GPO_BLINK */ |
| /* Input Control Registers */ |
| outl(0x00000180, DEFAULT_GPIOBASE + 0x2c); /* GPI_INV */ |
| outl(0x000000e6, DEFAULT_GPIOBASE + 0x30); /* GPIO_USE_SEL2 */ |
| outl(0x000000d0, DEFAULT_GPIOBASE + 0x34); /* GP_IO_SEL2 */ |
| outl(0x00000034, DEFAULT_GPIOBASE + 0x38); /* GP_LVL2 */ |
| |
| 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 */ |
| } |
| |
| #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/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); |
| // decode range |
| pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x80, 0x0007); |
| // decode range |
| pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x82, 0x3f0f); |
| // Enable 0x02e0 - 0x2ff |
| pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x84, 0x001c02e1); |
| // Enable 0x600 - 0x6ff |
| pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x88, 0x00fc0601); |
| // Enable 0x68 - 0x6f |
| pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x8c, 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(device_t dev) |
| { |
| unsigned int port = dev >> 8; |
| outb(0x55, port); |
| } |
| |
| static void pnp_exit_ext_func_mode(device_t dev) |
| { |
| unsigned int port = dev >> 8; |
| outb(0xaa, port); |
| } |
| |
| static void pnp_write_register(device_t dev, int reg, int val) |
| { |
| unsigned int port = dev >> 8; |
| outb(reg, port); |
| outb(val, port+1); |
| } |
| |
| static void early_superio_config(void) |
| { |
| device_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(0x3100) = 0x00042220; |
| /* Device 1d interrupt pin register */ |
| RCBA32(0x310c) = 0x00214321; |
| |
| /* dev irq route register */ |
| RCBA16(0x3140) = 0x0232; |
| RCBA16(0x3142) = 0x3246; |
| RCBA16(0x3144) = 0x0237; |
| RCBA16(0x3146) = 0x3201; |
| RCBA16(0x3148) = 0x3216; |
| |
| /* Enable IOAPIC */ |
| RCBA8(0x31ff) = 0x03; |
| |
| /* Enable upper 128bytes of CMOS */ |
| RCBA32(0x3400) = (1 << 2); |
| |
| /* Disable unused devices */ |
| RCBA32(0x3418) = FD_PCIE6 | FD_PCIE5 | FD_INTLAN | FD_ACMOD | FD_ACAUD | FD_PATA; |
| RCBA32(0x3418) |= (1 << 0); // Required. |
| |
| /* 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; |
| 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; |
| } |
| |
| #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 main(unsigned long bist) |
| { |
| u32 reg32; |
| int boot_mode = 0; |
| |
| if (bist == 0) { |
| enable_lapic(); |
| } |
| |
| #if 0 |
| /* Force PCIRST# */ |
| pci_write_config16(PCI_DEV(0, 0x1e, 0), BCTRL, SBR); |
| udelay(200); |
| pci_write_config16(PCI_DEV(0, 0x1e, 0), BCTRL, 0); |
| udelay(200); |
| #endif |
| |
| ich7_enable_lpc(); |
| early_superio_config(); |
| |
| /* 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(BIOS_DEBUG, "soft reset detected, rebooting properly\n"); |
| outb(0x6, 0xcf9); |
| while (1) asm("hlt"); |
| } |
| |
| /* Perform some early chipset initialization required |
| * before RAM initialization can work |
| */ |
| i945_early_initialization(); |
| |
| /* Read PM1_CNT */ |
| reg32 = inl(DEFAULT_PMBASE + 0x04); |
| printk(BIOS_DEBUG, "PM1_CNT: %08x\n", reg32); |
| if (((reg32 >> 10) & 7) == 5) { |
| #if CONFIG_HAVE_ACPI_RESUME |
| printk(BIOS_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(BIOS_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 == 0 |
| /* When doing resume, we must not overwrite RAM */ |
| #if defined(DEBUG_RAM_SETUP) |
| sdram_dump_mchbar_registers(); |
| |
| { |
| /* This will not work if TSEG is in place! */ |
| u32 tom = pci_read_config32(PCI_DEV(0,2,0), 0x5c); |
| |
| printk(BIOS_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, (void *)CONFIG_RAMBASE, HIGH_MEMORY_SAVE); |
| |
| /* Magic for S3 resume */ |
| pci_write_config32(PCI_DEV(0, 0x00, 0), SKPAD, 0xcafed00d); |
| } |
| #endif |
| } |
| |