| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2007-2010 coresystems GmbH |
| * Copyright (C) 2011 Google Inc. |
| * |
| * 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 |
| */ |
| |
| #include <stdint.h> |
| #include <string.h> |
| #include <lib.h> |
| #include <timestamp.h> |
| #include <arch/byteorder.h> |
| #include <arch/io.h> |
| #include <device/pci.h> |
| #include <device/pci_def.h> |
| #include <device/pnp_def.h> |
| #include <cpu/x86/lapic.h> |
| #include <pc80/mc146818rtc.h> |
| #include <cbmem.h> |
| #include <console/console.h> |
| #include "northbridge/intel/sandybridge/sandybridge.h" |
| #include "northbridge/intel/sandybridge/raminit.h" |
| #include "southbridge/intel/bd82x6x/pch.h" |
| #include "southbridge/intel/bd82x6x/gpio.h" |
| #include "ec/google/chromeec/ec.h" |
| #include <arch/cpu.h> |
| #include <cpu/x86/bist.h> |
| #include <cpu/x86/msr.h> |
| #include "gpio.h" |
| #if CONFIG_CHROMEOS |
| #include <vendorcode/google/chromeos/chromeos.h> |
| #endif |
| #include <cbfs.h> |
| |
| #include <southbridge/intel/bd82x6x/chip.h> |
| |
| static void pch_enable_lpc(void) |
| { |
| const struct device *lpc; |
| const struct southbridge_intel_bd82x6x_config *config = NULL; |
| |
| lpc = dev_find_slot(0, PCI_DEVFN(0x1f, 0)); |
| if (!lpc) |
| return; |
| if (lpc->chip_info) |
| config = lpc->chip_info; |
| if (!config) |
| return; |
| |
| /* Set COM1/COM2 decode range */ |
| pci_write_config16(PCH_LPC_DEV, LPC_IO_DEC, 0x0010); |
| |
| /* Enable PS/2 Keyboard/Mouse, EC areas and COM1 */ |
| pci_write_config16(PCH_LPC_DEV, LPC_EN, KBC_LPC_EN | MC_LPC_EN | \ |
| GAMEL_LPC_EN | COMA_LPC_EN); |
| |
| pci_write_config32(PCH_LPC_DEV, LPC_GEN1_DEC, config->gen1_dec); |
| pci_write_config32(PCH_LPC_DEV, LPC_GEN2_DEC, config->gen2_dec); |
| pci_write_config32(PCH_LPC_DEV, LPC_GEN3_DEC, config->gen3_dec); |
| pci_write_config32(PCH_LPC_DEV, LPC_GEN4_DEC, config->gen4_dec); |
| } |
| |
| static void rcba_config(void) |
| { |
| u32 reg32; |
| |
| /* |
| * GFX INTA -> PIRQA (MSI) |
| * D28IP_P3IP WLAN INTA -> PIRQB |
| * D29IP_E1P EHCI1 INTA -> PIRQD |
| * D26IP_E2P EHCI2 INTA -> PIRQF |
| * D31IP_SIP SATA INTA -> PIRQF (MSI) |
| * D31IP_SMIP SMBUS INTB -> PIRQH |
| * D31IP_TTIP THRT INTC -> PIRQA |
| * D27IP_ZIP HDA INTA -> PIRQA (MSI) |
| * |
| * TRACKPAD -> PIRQE (Edge Triggered) |
| * TOUCHSCREEN -> PIRQG (Edge Triggered) |
| */ |
| |
| /* Device interrupt pin register (board specific) */ |
| RCBA32(D31IP) = (INTC << D31IP_TTIP) | (NOINT << D31IP_SIP2) | |
| (INTB << D31IP_SMIP) | (INTA << D31IP_SIP); |
| RCBA32(D30IP) = (NOINT << D30IP_PIP); |
| RCBA32(D29IP) = (INTA << D29IP_E1P); |
| RCBA32(D28IP) = (INTA << D28IP_P3IP); |
| RCBA32(D27IP) = (INTA << D27IP_ZIP); |
| RCBA32(D26IP) = (INTA << D26IP_E2P); |
| RCBA32(D25IP) = (NOINT << D25IP_LIP); |
| RCBA32(D22IP) = (NOINT << D22IP_MEI1IP); |
| |
| /* Device interrupt route registers */ |
| DIR_ROUTE(D31IR, PIRQB, PIRQH, PIRQA, PIRQC); |
| DIR_ROUTE(D29IR, PIRQD, PIRQE, PIRQF, PIRQG); |
| DIR_ROUTE(D28IR, PIRQB, PIRQC, PIRQD, PIRQE); |
| DIR_ROUTE(D27IR, PIRQA, PIRQH, PIRQA, PIRQB); |
| DIR_ROUTE(D26IR, PIRQF, PIRQE, PIRQG, PIRQH); |
| DIR_ROUTE(D25IR, PIRQA, PIRQB, PIRQC, PIRQD); |
| DIR_ROUTE(D22IR, PIRQA, PIRQB, PIRQC, PIRQD); |
| |
| /* Enable IOAPIC (generic) */ |
| RCBA16(OIC) = 0x0100; |
| /* PCH BWG says to read back the IOAPIC enable register */ |
| (void) RCBA16(OIC); |
| |
| /* Disable unused devices (board specific) */ |
| reg32 = RCBA32(FD); |
| reg32 |= PCH_DISABLE_ALWAYS; |
| RCBA32(FD) = reg32; |
| } |
| |
| static void copy_spd(struct pei_data *peid) |
| { |
| const int gpio_vector[] = {41, 42, 43, 10, -1}; |
| char *spd_file; |
| size_t spd_file_len; |
| int spd_index = get_gpios(gpio_vector); |
| |
| printk(BIOS_DEBUG, "spd index %d\n", spd_index); |
| spd_file = cbfs_get_file_content(CBFS_DEFAULT_MEDIA, "spd.bin", 0xab, |
| &spd_file_len); |
| if (!spd_file) |
| die("SPD data not found."); |
| |
| if (spd_file_len < ((spd_index + 1) * sizeof(peid->spd_data[0]))) { |
| printk(BIOS_ERR, "spd index override to 0 - old hardware?\n"); |
| spd_index = 0; |
| } |
| |
| if (spd_file_len < sizeof(peid->spd_data[0])) |
| die("Missing SPD data."); |
| |
| memcpy(peid->spd_data[0], |
| spd_file + |
| spd_index * sizeof(peid->spd_data[0]), |
| sizeof(peid->spd_data[0])); |
| } |
| |
| void main(unsigned long bist) |
| { |
| int boot_mode = 0; |
| int cbmem_was_initted; |
| u32 pm1_cnt; |
| u16 pm1_sts; |
| |
| struct pei_data pei_data = { |
| pei_version: PEI_VERSION, |
| mchbar: DEFAULT_MCHBAR, |
| dmibar: DEFAULT_DMIBAR, |
| epbar: DEFAULT_EPBAR, |
| pciexbar: CONFIG_MMCONF_BASE_ADDRESS, |
| smbusbar: SMBUS_IO_BASE, |
| wdbbar: 0x4000000, |
| wdbsize: 0x1000, |
| hpet_address: CONFIG_HPET_ADDRESS, |
| rcba: DEFAULT_RCBABASE, |
| pmbase: DEFAULT_PMBASE, |
| gpiobase: DEFAULT_GPIOBASE, |
| thermalbase: 0xfed08000, |
| system_type: 0, // 0 Mobile, 1 Desktop/Server |
| tseg_size: CONFIG_SMM_TSEG_SIZE, |
| ts_addresses: { 0x00, 0x00, 0x00, 0x00 }, |
| ec_present: 1, |
| ddr3lv_support: 1, |
| // 0 = leave channel enabled |
| // 1 = disable dimm 0 on channel |
| // 2 = disable dimm 1 on channel |
| // 3 = disable dimm 0+1 on channel |
| dimm_channel0_disabled: 2, |
| dimm_channel1_disabled: 2, |
| max_ddr3_freq: 1600, |
| usb_port_config: { |
| /* Empty and onboard Ports 0-7, set to un-used pin OC3 */ |
| { 0, 3, 0x0000 }, /* P0: Empty */ |
| { 1, 0, 0x0040 }, /* P1: Left USB 1 (OC0) */ |
| { 1, 1, 0x0040 }, /* P2: Left USB 2 (OC1) */ |
| { 1, 3, 0x0040 }, /* P3: SDCARD (no OC) */ |
| { 0, 3, 0x0000 }, /* P4: Empty */ |
| { 1, 3, 0x0040 }, /* P5: WWAN (no OC) */ |
| { 0, 3, 0x0000 }, /* P6: Empty */ |
| { 0, 3, 0x0000 }, /* P7: Empty */ |
| /* Empty and onboard Ports 8-13, set to un-used pin OC4 */ |
| { 1, 4, 0x0040 }, /* P8: Camera (no OC) */ |
| { 1, 4, 0x0040 }, /* P9: Bluetooth (no OC) */ |
| { 0, 4, 0x0000 }, /* P10: Empty */ |
| { 0, 4, 0x0000 }, /* P11: Empty */ |
| { 0, 4, 0x0000 }, /* P12: Empty */ |
| { 0, 4, 0x0000 }, /* P13: Empty */ |
| }, |
| }; |
| |
| timestamp_init(get_initial_timestamp()); |
| timestamp_add_now(TS_START_ROMSTAGE); |
| |
| if (bist == 0) |
| enable_lapic(); |
| |
| pch_enable_lpc(); |
| |
| /* Enable GPIOs */ |
| pci_write_config32(PCH_LPC_DEV, GPIO_BASE, DEFAULT_GPIOBASE|1); |
| pci_write_config8(PCH_LPC_DEV, GPIO_CNTL, 0x10); |
| setup_pch_gpios(&link_gpio_map); |
| |
| /* Initialize console device(s) */ |
| 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\n"); |
| boot_mode = 1; |
| |
| /* System is not happy after keyboard reset... */ |
| printk(BIOS_DEBUG, "Issuing CF9 warm reset\n"); |
| outb(0x6, 0xcf9); |
| hlt(); |
| } |
| |
| /* Perform some early chipset initialization required |
| * before RAM initialization can work |
| */ |
| sandybridge_early_initialization(SANDYBRIDGE_MOBILE); |
| printk(BIOS_DEBUG, "Back from sandybridge_early_initialization()\n"); |
| |
| /* Check PM1_STS[15] to see if we are waking from Sx */ |
| pm1_sts = inw(DEFAULT_PMBASE + PM1_STS); |
| |
| /* Read PM1_CNT[12:10] to determine which Sx state */ |
| pm1_cnt = inl(DEFAULT_PMBASE + PM1_CNT); |
| |
| if ((pm1_sts & WAK_STS) && ((pm1_cnt >> 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(pm1_cnt & ~(7 << 10), DEFAULT_PMBASE + PM1_CNT); |
| #else |
| printk(BIOS_DEBUG, "Resume from S3 detected, but disabled.\n"); |
| #endif |
| } else { |
| /* This is the fastest way to let users know |
| * the Intel CPU is now alive. |
| */ |
| google_chromeec_kbbacklight(100); |
| } |
| |
| post_code(0x38); |
| /* Enable SPD ROMs and DDR-III DRAM */ |
| enable_smbus(); |
| |
| /* Prepare USB controller early in S3 resume */ |
| if (boot_mode == 2) |
| enable_usb_bar(); |
| |
| post_code(0x39); |
| |
| copy_spd(&pei_data); |
| |
| post_code(0x3a); |
| pei_data.boot_mode = boot_mode; |
| timestamp_add_now(TS_BEFORE_INITRAM); |
| sdram_initialize(&pei_data); |
| |
| timestamp_add_now(TS_AFTER_INITRAM); |
| post_code(0x3c); |
| |
| rcba_config(); |
| post_code(0x3d); |
| |
| quick_ram_check(); |
| post_code(0x3e); |
| |
| MCHBAR16(SSKPD) = 0xCAFE; |
| cbmem_was_initted = !cbmem_initialize(); |
| |
| #if CONFIG_HAVE_ACPI_RESUME |
| /* 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. |
| */ |
| |
| *(u32 *)CBMEM_BOOT_MODE = 0; |
| *(u32 *)CBMEM_RESUME_BACKUP = 0; |
| |
| if ((boot_mode == 2) && cbmem_was_initted) { |
| void *resume_backup_memory = cbmem_find(CBMEM_ID_RESUME); |
| if (resume_backup_memory) { |
| *(u32 *)CBMEM_BOOT_MODE = boot_mode; |
| *(u32 *)CBMEM_RESUME_BACKUP = (u32)resume_backup_memory; |
| } |
| /* Magic for S3 resume */ |
| pci_write_config32(PCI_DEV(0, 0x00, 0), SKPAD, 0xcafed00d); |
| } else if (boot_mode == 2) { |
| /* Failed S3 resume, reset to come up cleanly */ |
| outb(0x6, 0xcf9); |
| hlt(); |
| } else { |
| pci_write_config32(PCI_DEV(0, 0x00, 0), SKPAD, 0xcafebabe); |
| } |
| #endif |
| post_code(0x3f); |
| #if CONFIG_CHROMEOS |
| init_chromeos(boot_mode); |
| #endif |
| timestamp_add_now(TS_END_ROMSTAGE); |
| } |