| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2015 Timothy Pearson <tpearson@raptorengineeringinc.com>, Raptor Engineering |
| * Copyright (C) 2012 secunet Security Networks AG |
| * |
| * 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 <cpu/x86/lapic.h> |
| #include <cpu/x86/msr.h> |
| #include <cpu/x86/tsc.h> |
| #include <cbmem.h> |
| #include <lib.h> |
| #include <pc80/mc146818rtc.h> |
| #include <console/console.h> |
| #include <southbridge/intel/i82801ix/i82801ix.h> |
| #include <northbridge/intel/gm45/gm45.h> |
| #include <cpu/intel/romstage.h> |
| |
| #define LPC_DEV PCI_DEV(0, 0x1f, 0) |
| #define MCH_DEV PCI_DEV(0, 0, 0) |
| |
| #define HYBRID_GRAPHICS_INTEGRATED_ONLY 0 |
| #define HYBRID_GRAPHICS_DISCRETE_ONLY 1 |
| #define HYBRID_GRAPHICS_SWITCHABLE 2 |
| |
| #define HYBRID_GRAPHICS_GP_LVL_BITS 0x004a0000 |
| #define HYBRID_GRAPHICS_GP_LVL2_BITS 0x00020000 |
| |
| #define HYBRID_GRAPHICS_DETECT_GP_BITS 0x00000010 |
| |
| #define HYBRID_GRAPHICS_INT_CLAIM_VGA 0x2 |
| #define HYBRID_GRAPHICS_SEC_VGA_EN 0x2 |
| |
| static void hybrid_graphics_configure_switchable_graphics(bool enable) |
| { |
| uint32_t tmp; |
| |
| if (enable) { |
| /* Disable integrated graphics legacy VGA cycles */ |
| tmp = pci_read_config16(MCH_DEV, D0F0_GGC); |
| pci_write_config16(MCH_DEV, D0F0_GGC, tmp | HYBRID_GRAPHICS_INT_CLAIM_VGA); |
| |
| /* Enable secondary VGA controller */ |
| tmp = pci_read_config16(MCH_DEV, D0F0_DEVEN); |
| pci_write_config16(MCH_DEV, D0F0_DEVEN, tmp | HYBRID_GRAPHICS_SEC_VGA_EN); |
| } |
| else { |
| /* Enable integrated graphics legacy VGA cycles */ |
| tmp = pci_read_config16(MCH_DEV, D0F0_GGC); |
| pci_write_config16(MCH_DEV, D0F0_GGC, tmp & ~HYBRID_GRAPHICS_INT_CLAIM_VGA); |
| |
| /* Disable secondary VGA controller */ |
| tmp = pci_read_config16(MCH_DEV, D0F0_DEVEN); |
| pci_write_config16(MCH_DEV, D0F0_DEVEN, tmp & ~HYBRID_GRAPHICS_SEC_VGA_EN); |
| } |
| } |
| |
| static void hybrid_graphics_set_up_gpio(void) |
| { |
| uint32_t tmp; |
| |
| /* Enable hybrid graphics GPIO lines */ |
| tmp = inl(DEFAULT_GPIOBASE + GP_IO_USE_SEL); |
| tmp = tmp | HYBRID_GRAPHICS_GP_LVL_BITS; |
| outl(tmp, DEFAULT_GPIOBASE + GP_IO_USE_SEL); |
| |
| tmp = inl(DEFAULT_GPIOBASE + GP_IO_USE_SEL2); |
| tmp = tmp | HYBRID_GRAPHICS_GP_LVL2_BITS; |
| outl(tmp, DEFAULT_GPIOBASE + GP_IO_USE_SEL2); |
| |
| /* Set hybrid graphics control GPIO lines to output */ |
| tmp = inl(DEFAULT_GPIOBASE + GP_IO_SEL); |
| tmp = tmp & ~HYBRID_GRAPHICS_GP_LVL_BITS; |
| outl(tmp, DEFAULT_GPIOBASE + GP_IO_SEL); |
| |
| tmp = inl(DEFAULT_GPIOBASE + GP_IO_SEL2); |
| tmp = tmp & ~HYBRID_GRAPHICS_GP_LVL2_BITS; |
| outl(tmp, DEFAULT_GPIOBASE + GP_IO_SEL2); |
| |
| /* Set hybrid graphics detect GPIO lines to input */ |
| tmp = inl(DEFAULT_GPIOBASE + GP_IO_SEL); |
| tmp = tmp | HYBRID_GRAPHICS_DETECT_GP_BITS; |
| outl(tmp, DEFAULT_GPIOBASE + GP_IO_SEL); |
| } |
| |
| static bool hybrid_graphics_installed(void) |
| { |
| if (inl(DEFAULT_GPIOBASE + GP_LVL) & HYBRID_GRAPHICS_DETECT_GP_BITS) |
| return false; |
| else |
| return true; |
| } |
| |
| static void hybrid_graphics_switch_to_integrated_graphics(void) |
| { |
| uint32_t tmp; |
| |
| /* Disable switchable graphics */ |
| hybrid_graphics_configure_switchable_graphics(false); |
| |
| /* Configure muxes */ |
| tmp = inl(DEFAULT_GPIOBASE + GP_LVL); |
| tmp = tmp & ~HYBRID_GRAPHICS_GP_LVL_BITS; |
| outl(tmp, DEFAULT_GPIOBASE + GP_LVL); |
| |
| tmp = inl(DEFAULT_GPIOBASE + GP_LVL2); |
| tmp = tmp & ~HYBRID_GRAPHICS_GP_LVL2_BITS; |
| outl(tmp, DEFAULT_GPIOBASE + GP_LVL2); |
| } |
| |
| static void hybrid_graphics_switch_to_discrete_graphics(void) |
| { |
| uint32_t tmp; |
| |
| /* Disable switchable graphics */ |
| hybrid_graphics_configure_switchable_graphics(false); |
| |
| /* Configure muxes */ |
| tmp = inl(DEFAULT_GPIOBASE + GP_LVL); |
| tmp = tmp | HYBRID_GRAPHICS_GP_LVL_BITS; |
| outl(tmp, DEFAULT_GPIOBASE + GP_LVL); |
| |
| tmp = inl(DEFAULT_GPIOBASE + GP_LVL2); |
| tmp = tmp | HYBRID_GRAPHICS_GP_LVL2_BITS; |
| outl(tmp, DEFAULT_GPIOBASE + GP_LVL2); |
| } |
| |
| static void hybrid_graphics_switch_to_dual_graphics(void) |
| { |
| /* Enable switchable graphics */ |
| hybrid_graphics_configure_switchable_graphics(true); |
| } |
| |
| static void default_southbridge_gpio_setup(void) |
| { |
| outl(0x197e23fe, DEFAULT_GPIOBASE + GP_IO_USE_SEL); |
| outl(0xe1a66dfe, DEFAULT_GPIOBASE + GP_IO_SEL); |
| outl(0xe3faef3f, DEFAULT_GPIOBASE + GP_LVL); |
| |
| /* Disable blink [31:0]. */ |
| outl(0x00000000, DEFAULT_GPIOBASE + GPO_BLINK); |
| /* Set input inversion [31:0]. */ |
| outl(0x00000102, DEFAULT_GPIOBASE + GPI_INV); |
| |
| /* Enable GPIOs [60:32]. */ |
| outl(0x030306f6, DEFAULT_GPIOBASE + GP_IO_USE_SEL2); |
| /* Set input/output mode [60:32] (0 == out, 1 == in). */ |
| outl(0x1f55f9f1, DEFAULT_GPIOBASE + GP_IO_SEL2); |
| /* Set gpio levels [60:32]. */ |
| outl(0x1dffff53, DEFAULT_GPIOBASE + GP_LVL2); |
| } |
| |
| static void early_lpc_setup(void) |
| { |
| /* Set up SuperIO LPC forwards */ |
| |
| /* Configure serial IRQs.*/ |
| pci_write_config8(LPC_DEV, D31F0_SERIRQ_CNTL, 0xd0); |
| /* Map COMa on 0x3f8, COMb on 0x2f8. */ |
| pci_write_config16(LPC_DEV, D31F0_LPC_IODEC, 0x0010); |
| pci_write_config16(LPC_DEV, D31F0_LPC_EN, 0x3f0f); |
| pci_write_config32(LPC_DEV, D31F0_GEN1_DEC, 0x7c1601); |
| pci_write_config32(LPC_DEV, D31F0_GEN2_DEC, 0xc15e1); |
| pci_write_config32(LPC_DEV, D31F0_GEN3_DEC, 0x1c1681); |
| } |
| |
| void main(unsigned long bist) |
| { |
| sysinfo_t sysinfo; |
| int s3resume = 0; |
| int cbmem_initted; |
| u16 reg16; |
| |
| /* basic northbridge setup, including MMCONF BAR */ |
| gm45_early_init(); |
| |
| if (bist == 0) |
| enable_lapic(); |
| |
| /* First, run everything needed for console output. */ |
| i82801ix_early_init(); |
| early_lpc_setup(); |
| console_init(); |
| printk(BIOS_DEBUG, "running main(bist = %lu)\n", bist); |
| |
| reg16 = pci_read_config16(LPC_DEV, D31F0_GEN_PMCON_3); |
| pci_write_config16(LPC_DEV, D31F0_GEN_PMCON_3, reg16); |
| if ((MCHBAR16(SSKPD_MCHBAR) == 0xCAFE) && !(reg16 & (1 << 9))) { |
| printk(BIOS_DEBUG, "soft reset detected, rebooting properly\n"); |
| gm45_early_reset(); |
| } |
| |
| default_southbridge_gpio_setup(); |
| |
| uint8_t hybrid_graphics_mode = HYBRID_GRAPHICS_INTEGRATED_ONLY; |
| get_option(&hybrid_graphics_mode, "hybrid_graphics_mode"); |
| |
| /* Set up hybrid graphics */ |
| hybrid_graphics_set_up_gpio(); |
| if (hybrid_graphics_installed()) { |
| /* Select appropriate hybrid graphics device */ |
| printk(BIOS_DEBUG, "Hybrid graphics available, setting mode %d\n", hybrid_graphics_mode); |
| if (hybrid_graphics_mode == HYBRID_GRAPHICS_INTEGRATED_ONLY) |
| hybrid_graphics_switch_to_integrated_graphics(); |
| else if (hybrid_graphics_mode == HYBRID_GRAPHICS_DISCRETE_ONLY) |
| hybrid_graphics_switch_to_discrete_graphics(); |
| else if (hybrid_graphics_mode == HYBRID_GRAPHICS_SWITCHABLE) |
| hybrid_graphics_switch_to_integrated_graphics(); |
| /* Switchable graphics are fully enabled after raminit */ |
| /* FIXME |
| * Enabling switchable graphics prevents bootup! |
| * Debug and fix appropriately... |
| */ |
| } |
| else { |
| printk(BIOS_DEBUG, "Hybrid graphics not installed\n"); |
| hybrid_graphics_switch_to_integrated_graphics(); |
| } |
| |
| /* ASPM related setting, set early by original BIOS. */ |
| DMIBAR16(0x204) &= ~(3 << 10); |
| |
| /* Check for S3 resume. */ |
| const u32 pm1_cnt = inl(DEFAULT_PMBASE + 0x04); |
| if (((pm1_cnt >> 10) & 7) == 5) { |
| #if CONFIG_HAVE_ACPI_RESUME |
| printk(BIOS_DEBUG, "Resume from S3 detected.\n"); |
| s3resume = 1; |
| /* Clear SLP_TYPE. This will break stage2 but |
| * we care for that when we get there. |
| */ |
| outl(pm1_cnt & ~(7 << 10), DEFAULT_PMBASE + 0x04); |
| #else |
| printk(BIOS_DEBUG, "Resume from S3 detected, but disabled.\n"); |
| #endif |
| } |
| |
| /* RAM initialization */ |
| enter_raminit_or_reset(); |
| memset(&sysinfo, 0, sizeof(sysinfo)); |
| sysinfo.spd_map[0] = 0x50; |
| sysinfo.spd_map[2] = 0x51; |
| sysinfo.enable_igd = 1; |
| sysinfo.enable_peg = 0; |
| get_gmch_info(&sysinfo); |
| raminit(&sysinfo, s3resume); |
| |
| const u32 deven = pci_read_config32(MCH_DEV, D0F0_DEVEN); |
| /* Disable D4F0 (unknown signal controller). */ |
| pci_write_config32(MCH_DEV, D0F0_DEVEN, deven & ~0x4000); |
| |
| init_pm(&sysinfo, 0); |
| |
| i82801ix_dmi_setup(); |
| gm45_late_init(sysinfo.stepping); |
| i82801ix_dmi_poll_vc1(); |
| |
| MCHBAR16(SSKPD_MCHBAR) = 0xCAFE; |
| /* Enable ethernet. */ |
| RCBA32(0x3414) &= ~0x20; |
| |
| RCBA32(0x0238) = 0x00543210; |
| RCBA32(0x0240) = 0x009c0b02; |
| RCBA32(0x0244) = 0x00a20b1a; |
| RCBA32(0x0248) = 0x005402cb; |
| RCBA32(0x0254) = 0x00470966; |
| RCBA32(0x0258) = 0x00470473; |
| RCBA32(0x0260) = 0x00e90825; |
| RCBA32(0x0278) = 0x00bc0efb; |
| RCBA32(0x027c) = 0x00c00f0b; |
| RCBA32(0x0280) = 0x00670000; |
| RCBA32(0x0284) = 0x006d0000; |
| RCBA32(0x0288) = 0x00600b4e; |
| RCBA32(0x1e10) = 0x00020800; |
| RCBA32(0x1e18) = 0x36ea00a0; |
| RCBA32(0x1e80) = 0x000c0801; |
| RCBA32(0x1e84) = 0x000200f0; |
| RCBA32(0x2028) = 0x04c8f95e; |
| RCBA32(0x202c) = 0x055c095e; |
| RCBA32(0x204c) = 0x001ffc00; |
| RCBA32(0x2050) = 0x00100fff; |
| RCBA32(0x2090) = 0x37000000; |
| RCBA32(0x20b0) = 0x0c000000; |
| RCBA32(0x20d0) = 0x09000000; |
| RCBA32(0x20f0) = 0x05000000; |
| RCBA32(0x3400) = 0x0000001c; |
| RCBA32(0x3410) = 0x00100461; |
| RCBA32(0x3414) = 0x00000000; |
| RCBA32(0x341c) = 0xbf4f001f; |
| RCBA32(0x3420) = 0x00000000; |
| RCBA32(0x3430) = 0x00000001; |
| |
| init_iommu(); |
| |
| /* FIXME: make a proper SMBUS mux support. */ |
| outl(inl(DEFAULT_GPIOBASE + 0x38) & ~0x400, DEFAULT_GPIOBASE + 0x38); |
| |
| cbmem_initted = !cbmem_recovery(s3resume); |
| |
| if (hybrid_graphics_installed()) |
| if (hybrid_graphics_mode == HYBRID_GRAPHICS_SWITCHABLE) |
| hybrid_graphics_switch_to_dual_graphics(); |
| |
| #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. |
| */ |
| if (s3resume && cbmem_initted) { |
| 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, 0, 0), D0F0_SKPD, SKPAD_ACPI_S3_MAGIC); |
| } else { |
| /* Magic for S3 resume */ |
| pci_write_config32(PCI_DEV(0, 0, 0), D0F0_SKPD, SKPAD_NORMAL_BOOT_MAGIC); |
| } |
| #endif |
| printk(BIOS_SPEW, "exit main()\n"); |
| } |
| |