diff options
Diffstat (limited to 'src/northbridge/intel/fsp_sandybridge/northbridge.c')
| -rw-r--r-- | src/northbridge/intel/fsp_sandybridge/northbridge.c | 407 |
1 files changed, 0 insertions, 407 deletions
diff --git a/src/northbridge/intel/fsp_sandybridge/northbridge.c b/src/northbridge/intel/fsp_sandybridge/northbridge.c deleted file mode 100644 index 3f982c4a17..0000000000 --- a/src/northbridge/intel/fsp_sandybridge/northbridge.c +++ /dev/null @@ -1,407 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2007-2009 coresystems GmbH - * Copyright (C) 2011 The ChromiumOS Authors. All rights reserved. - * Copyright (C) 2013 Sage Electronic Engineering, LLC. - * - * 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. - */ - -#include <console/console.h> -#include <arch/acpi.h> -#include <arch/io.h> -#include <stdint.h> -#include <delay.h> -#include <cpu/intel/fsp_model_206ax/model_206ax.h> -#include <cpu/x86/msr.h> -#include <device/device.h> -#include <device/pci.h> -#include <device/pci_ids.h> -#include <device/hypertransport.h> -#include <stdlib.h> -#include <string.h> -#include <cpu/cpu.h> -#include <cbmem.h> -#include "chip.h" -#include "northbridge.h" -#include <fsp_util.h> -#include <cpu/intel/smm/gen1/smi.h> - -static int bridge_revision_id = -1; - -/* IGD UMA memory */ -static uint64_t uma_memory_base = 0; -static uint64_t uma_memory_size = 0; - -int bridge_silicon_revision(void) -{ - if (bridge_revision_id < 0) { - uint8_t stepping = cpuid_eax(1) & 0xf; - uint8_t bridge_id = pci_read_config16( - dev_find_slot(0, PCI_DEVFN(0, 0)), - PCI_DEVICE_ID) & 0xf0; - bridge_revision_id = bridge_id | stepping; - } - return bridge_revision_id; -} - -/* Reserve everything between A segment and 1MB: - * - * 0xa0000 - 0xbffff: legacy VGA - * 0xc0000 - 0xcffff: VGA OPROM (needed by kernel) - * 0xe0000 - 0xfffff: SeaBIOS, if used, otherwise DMI - */ -static const int legacy_hole_base_k = 0xa0000 / 1024; -static const int legacy_hole_size_k = 384; - -static int get_pcie_bar(u32 *base, u32 *len) -{ - device_t dev; - u32 pciexbar_reg; - - *base = 0; - *len = 0; - - dev = dev_find_slot(0, PCI_DEVFN(0, 0)); - if (!dev) - return 0; - - pciexbar_reg = pci_read_config32(dev, PCIEXBAR); - - if (!(pciexbar_reg & (1 << 0))) - return 0; - - switch ((pciexbar_reg >> 1) & 3) { - case 0: // 256MB - *base = pciexbar_reg & ((1 << 31)|(1 << 30)|(1 << 29)|(1 << 28)); - *len = 256 * 1024 * 1024; - return 1; - case 1: // 128M - *base = pciexbar_reg & ((1 << 31)|(1 << 30)|(1 << 29)|(1 << 28)|(1 << 27)); - *len = 128 * 1024 * 1024; - return 1; - case 2: // 64M - *base = pciexbar_reg & ((1 << 31)|(1 << 30)|(1 << 29)|(1 << 28)|(1 << 27)|(1 << 26)); - *len = 64 * 1024 * 1024; - return 1; - } - - return 0; -} - -static void add_fixed_resources(struct device *dev, int index) -{ - struct resource *resource; - u32 pcie_config_base, pcie_config_size; - - mmio_resource(dev, index++, uma_memory_base >> 10, uma_memory_size >> 10); - - if (get_pcie_bar(&pcie_config_base, &pcie_config_size)) { - printk(BIOS_DEBUG, "Adding PCIe config bar base=0x%08x " - "size=0x%x\n", pcie_config_base, pcie_config_size); - resource = new_resource(dev, index++); - resource->base = (resource_t) pcie_config_base; - resource->size = (resource_t) pcie_config_size; - resource->flags = IORESOURCE_MEM | IORESOURCE_RESERVE | - IORESOURCE_FIXED | IORESOURCE_STORED | IORESOURCE_ASSIGNED; - } - - mmio_resource(dev, index++, legacy_hole_base_k, legacy_hole_size_k); -} - -static void pci_domain_set_resources(device_t dev) -{ - uint64_t tom, me_base, touud; - uint32_t tseg_base, uma_size, tolud; - uint16_t ggc; - unsigned long long tomk; - - tomk = ggc = tseg_base = uma_size = tolud = tom = me_base = touud = 0; - - /* Total Memory 2GB example: - * - * 00000000 0000MB-1992MB 1992MB RAM (writeback) - * 7c800000 1992MB-2000MB 8MB TSEG (SMRR) - * 7d000000 2000MB-2002MB 2MB GFX GTT (uncached) - * 7d200000 2002MB-2034MB 32MB GFX UMA (uncached) - * 7f200000 2034MB TOLUD - * 7f800000 2040MB MEBASE - * 7f800000 2040MB-2048MB 8MB ME UMA (uncached) - * 80000000 2048MB TOM - * 100000000 4096MB-4102MB 6MB RAM (writeback) - * - * Total Memory 4GB example: - * - * 00000000 0000MB-2768MB 2768MB RAM (writeback) - * ad000000 2768MB-2776MB 8MB TSEG (SMRR) - * ad800000 2776MB-2778MB 2MB GFX GTT (uncached) - * ada00000 2778MB-2810MB 32MB GFX UMA (uncached) - * afa00000 2810MB TOLUD - * ff800000 4088MB MEBASE - * ff800000 4088MB-4096MB 8MB ME UMA (uncached) - * 100000000 4096MB TOM - * 100000000 4096MB-5374MB 1278MB RAM (writeback) - * 14fe00000 5368MB TOUUD - */ - - /* Top of Upper Usable DRAM, including remap */ - touud = pci_read_config32(dev, TOUUD+4); - touud <<= 32; - touud |= pci_read_config32(dev, TOUUD) & ~(1UL << 0); - - /* Top of Lower Usable DRAM */ - tolud = pci_read_config32(dev, TOLUD) & ~(1UL << 0); - - /* Top of Memory - does not account for any UMA */ - tom = pci_read_config32(dev, 0xa4); - tom <<= 32; - tom |= pci_read_config32(dev, 0xa0) & ~(1UL << 0); - - printk(BIOS_DEBUG, "TOUUD 0x%llx TOLUD 0x%08x TOM 0x%llx\n", - touud, tolud, tom); - - /* ME UMA needs excluding if total memory <4GB */ - me_base = pci_read_config32(dev, 0x74); - me_base <<= 32; - me_base |= pci_read_config32(dev, 0x70); - - printk(BIOS_DEBUG, "MEBASE 0x%llx\n", me_base); - - tomk = tolud >> 10; - if (me_base == tolud) { - /* ME is from MEBASE-TOM */ - uma_size = (tom - me_base) >> 10; - /* Increment TOLUD to account for ME as RAM */ - tolud += uma_size << 10; - /* UMA starts at old TOLUD */ - uma_memory_base = tomk * 1024ULL; - uma_memory_size = uma_size * 1024ULL; - printk(BIOS_DEBUG, "ME UMA base 0x%llx size %uM\n", - me_base, uma_size >> 10); - } - - /* Graphics memory comes next */ - ggc = pci_read_config16(dev, GGC); - if (!(ggc & 2)) { - printk(BIOS_DEBUG, "IGD decoded, subtracting "); - - /* Graphics memory */ - uma_size = ((ggc >> 3) & 0x1f) * 32 * 1024ULL; - printk(BIOS_DEBUG, "%uM UMA", uma_size >> 10); - tomk -= uma_size; - uma_memory_base = tomk * 1024ULL; - uma_memory_size += uma_size * 1024ULL; - - /* GTT Graphics Stolen Memory Size (GGMS) */ - uma_size = ((ggc >> 8) & 0x3) * 1024ULL; - tomk -= uma_size; - uma_memory_base = tomk * 1024ULL; - uma_memory_size += uma_size * 1024ULL; - printk(BIOS_DEBUG, " and %uM GTT\n", uma_size >> 10); - } - - /* Calculate TSEG size from its base which must be below GTT */ - uma_memory_base = tomk * 1024ULL; - tseg_base = pci_read_config32(dev, 0xb8) & ~(1UL << 0); - uma_size = (uma_memory_base - tseg_base) >> 10; - tomk -= uma_size; - uma_memory_base = tomk * 1024ULL; - uma_memory_size += uma_size * 1024ULL; - printk(BIOS_DEBUG, "TSEG base 0x%08x size %uM\n", - tseg_base, uma_size >> 10); - - printk(BIOS_INFO, "Available memory below 4GB: %lluM\n", tomk >> 10); - - /* Report the memory regions */ - ram_resource(dev, 3, 0, legacy_hole_base_k); - ram_resource(dev, 4, legacy_hole_base_k + legacy_hole_size_k, - (tomk - (legacy_hole_base_k + legacy_hole_size_k))); - - /* - * If >= 4GB installed then memory from TOLUD to 4GB - * is remapped above TOM, TOUUD will account for both - */ - touud >>= 10; /* Convert to KB */ - if (touud > 4096 * 1024) { - ram_resource(dev, 5, 4096 * 1024, touud - (4096 * 1024)); - printk(BIOS_INFO, "Available memory above 4GB: %lluM\n", - (touud >> 10) - 4096); - } - - add_fixed_resources(dev, 6); - - assign_resources(dev->link_list); -} - - /* TODO We could determine how many PCIe busses we need in - * the bar. For now that number is hardcoded to a max of 64. - * See e7525/northbridge.c for an example. - */ -static struct device_operations pci_domain_ops = { - .read_resources = pci_domain_read_resources, - .set_resources = pci_domain_set_resources, - .enable_resources = NULL, - .init = NULL, - .scan_bus = pci_domain_scan_bus, - .ops_pci_bus = pci_bus_default_ops, -}; - -static void mc_read_resources(device_t dev) -{ - struct resource *resource; - - pci_dev_read_resources(dev); - - /* So, this is one of the big mysteries in the coreboot resource - * allocator. This resource should make sure that the address space - * of the PCIe memory mapped config space bar. But it does not. - */ - - /* We use 0xcf as an unused index for our PCIe bar so that we find it again */ - resource = new_resource(dev, 0xcf); - resource->base = DEFAULT_PCIEXBAR; - resource->size = 64 * 1024 * 1024; /* 64MB hard coded PCIe config space */ - resource->flags = - IORESOURCE_MEM | IORESOURCE_FIXED | IORESOURCE_STORED | - IORESOURCE_ASSIGNED; - printk(BIOS_DEBUG, "Adding PCIe enhanced config space BAR 0x%08lx-0x%08lx.\n", - (unsigned long)(resource->base), (unsigned long)(resource->base + resource->size)); -} - -static void mc_set_resources(device_t dev) -{ - struct resource *resource; - - /* Report the PCIe BAR */ - resource = find_resource(dev, 0xcf); - if (resource) { - report_resource_stored(dev, resource, "<mmconfig>"); - } - - /* And call the normal set_resources */ - pci_dev_set_resources(dev); -} - -static void intel_set_subsystem(device_t dev, unsigned vendor, unsigned device) -{ - if (!vendor || !device) { - pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID, - pci_read_config32(dev, PCI_VENDOR_ID)); - } else { - pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID, - ((device & 0xffff) << 16) | (vendor & 0xffff)); - } -} - -static void northbridge_init(struct device *dev) -{ - u8 bios_reset_cpl; - - /* - * Set bit 0 of BIOS_RESET_CPL to indicate to the CPU - * that BIOS has initialized memory and power management - */ - bios_reset_cpl = MCHBAR8(BIOS_RESET_CPL); - bios_reset_cpl |= 1; - MCHBAR8(BIOS_RESET_CPL) = bios_reset_cpl; - printk(BIOS_DEBUG, "Set BIOS_RESET_CPL\n"); -} - -static u32 northbridge_get_base_reg(device_t dev, int reg) -{ - u32 value; - - value = pci_read_config32(dev, reg); - /* Base registers are at 1MiB granularity. */ - value &= ~((1 << 20) - 1); - return value; -} - -void -northbridge_get_tseg_base_and_size(u32 *tsegmb, u32 *tseg_size) -{ - device_t dev; - u32 bgsm; - dev = dev_find_slot(0, PCI_DEVFN(0, 0)); - - *tsegmb = northbridge_get_base_reg(dev, TSEG); - bgsm = northbridge_get_base_reg(dev, BGSM); - *tseg_size = bgsm - *tsegmb; -} - -void northbridge_write_smram(u8 smram) -{ - pci_write_config8(dev_find_slot(0, PCI_DEVFN(0, 0)), SMRAM, smram); -} - -static struct pci_operations intel_pci_ops = { - .set_subsystem = intel_set_subsystem, -}; - -static struct device_operations mc_ops = { - .read_resources = mc_read_resources, - .set_resources = mc_set_resources, - .enable_resources = pci_dev_enable_resources, - .init = northbridge_init, - .scan_bus = 0, - .ops_pci = &intel_pci_ops, - .acpi_fill_ssdt_generator = generate_cpu_entries, -}; - -static const struct pci_driver mc_driver_0100 __pci_driver = { - .ops = &mc_ops, - .vendor = PCI_VENDOR_ID_INTEL, - .device = 0x0100, -}; - -static const struct pci_driver mc_driver __pci_driver = { - .ops = &mc_ops, - .vendor = PCI_VENDOR_ID_INTEL, - .device = 0x0104, /* Sandy bridge */ -}; - -static const struct pci_driver mc_driver_1 __pci_driver = { - .ops = &mc_ops, - .vendor = PCI_VENDOR_ID_INTEL, - .device = 0x0154, /* Ivy bridge */ -}; - -static void cpu_bus_init(device_t dev) -{ - initialize_cpus(dev->link_list); -} - -static struct device_operations cpu_bus_ops = { - .read_resources = DEVICE_NOOP, - .set_resources = DEVICE_NOOP, - .enable_resources = DEVICE_NOOP, - .init = cpu_bus_init, - .scan_bus = 0, -}; - -static void enable_dev(device_t dev) -{ - /* Set the operations if it is a special bus type */ - if (dev->path.type == DEVICE_PATH_DOMAIN) { - dev->ops = &pci_domain_ops; - } else if (dev->path.type == DEVICE_PATH_CPU_CLUSTER) { - dev->ops = &cpu_bus_ops; - } -} - -struct chip_operations northbridge_intel_fsp_sandybridge_ops = { - CHIP_NAME("Intel i7 (SandyBridge/IvyBridge) integrated Northbridge") - .enable_dev = enable_dev, -}; |