diff options
Diffstat (limited to 'src/soc/intel/xeon_sp/uncore.c')
| -rw-r--r-- | src/soc/intel/xeon_sp/uncore.c | 305 |
1 files changed, 305 insertions, 0 deletions
diff --git a/src/soc/intel/xeon_sp/uncore.c b/src/soc/intel/xeon_sp/uncore.c new file mode 100644 index 000000000000..adf3e3e40b29 --- /dev/null +++ b/src/soc/intel/xeon_sp/uncore.c @@ -0,0 +1,305 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2019 - 2020 Intel Corporation + * Copyright (C) 2019 - 2020 Facebook 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; either version 2 of the License, or + * (at your option) any later version. + * + * 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 <cbmem.h> +#include <console/console.h> +#include <cpu/x86/lapic.h> +#include <device/pci.h> +#include <device/pci_ids.h> +#include <soc/iomap.h> +#include <soc/pci_devs.h> +#include <soc/ramstage.h> +#include <soc/soc_util.h> + +struct map_entry { + uint32_t reg; + int is_64_bit; + int is_limit; + int mask_bits; + const char *description; +}; + +enum { + TOHM_REG, + MMIOL_REG, + MMCFG_BASE_REG, + MMCFG_LIMIT_REG, + TOLM_REG, + ME_BASE_REG, + ME_LIMIT_REG, + TSEG_BASE_REG, + TSEG_LIMIT_REG, + /* Must be last. */ + NUM_MAP_ENTRIES +}; + +static struct map_entry memory_map[NUM_MAP_ENTRIES] = { + [TOHM_REG] = MAP_ENTRY_LIMIT_64(VTD_TOHM_CSR, 26, "TOHM"), + [MMIOL_REG] = MAP_ENTRY_BASE_32(VTD_MMIOL_CSR, "MMIOL"), + [MMCFG_BASE_REG] = MAP_ENTRY_BASE_64(VTD_MMCFG_BASE_CSR, "MMCFG_BASE"), + [MMCFG_LIMIT_REG] = MAP_ENTRY_LIMIT_64(VTD_MMCFG_LIMIT_CSR, 26, "MMCFG_LIMIT"), + [TOLM_REG] = MAP_ENTRY_LIMIT_32(VTD_TOLM_CSR, 26, "TOLM"), + [ME_BASE_REG] = MAP_ENTRY_BASE_64(VTD_ME_BASE_CSR, "ME_BASE"), + [ME_LIMIT_REG] = MAP_ENTRY_LIMIT_64(VTD_ME_LIMIT_CSR, 19, "ME_LIMIT"), + [TSEG_BASE_REG] = MAP_ENTRY_BASE_32(VTD_TSEG_BASE_CSR, "TSEGMB_BASE"), + [TSEG_LIMIT_REG] = MAP_ENTRY_LIMIT_32(VTD_TSEG_LIMIT_CSR, 20, "TSEGMB_LIMIT"), +}; + +static void read_map_entry(struct device *dev, struct map_entry *entry, + uint64_t *result) +{ + uint64_t value; + uint64_t mask; + + /* All registers are on a 1MiB granularity. */ + mask = ((1ULL << entry->mask_bits) - 1); + mask = ~mask; + + value = 0; + + if (entry->is_64_bit) { + value = pci_read_config32(dev, entry->reg + sizeof(uint32_t)); + value <<= 32; + } + + value |= (uint64_t)pci_read_config32(dev, entry->reg); + value &= mask; + + if (entry->is_limit) + value |= ~mask; + + *result = value; +} + +static void mc_read_map_entries(struct device *dev, uint64_t *values) +{ + int i; + for (i = 0; i < NUM_MAP_ENTRIES; i++) + read_map_entry(dev, &memory_map[i], &values[i]); +} + +static void mc_report_map_entries(struct device *dev, uint64_t *values) +{ + int i; + for (i = 0; i < NUM_MAP_ENTRIES; i++) { + printk(BIOS_DEBUG, "MC MAP: %s: 0x%llx\n", + memory_map[i].description, values[i]); + } +} + +/* + * Host Memory Map: + * + * +--------------------------+ TOCM (2 pow 46 - 1) + * | Reserved | + * +--------------------------+ + * | MMIOH (relocatable) | + * +--------------------------+ + * | PCISeg | + * +--------------------------+ TOHM + * | High DRAM Memory | + * +--------------------------+ 4GiB (0x100000000) + * +--------------------------+ 0xFFFF_FFFF + * | Firmware | + * +--------------------------+ 0xFF00_0000 + * | Reserved | + * +--------------------------+ 0xFEF0_0000 + * | Local xAPIC | + * +--------------------------+ 0xFEE0_0000 + * | HPET/LT/TPM/Others | + * +--------------------------+ 0xFED0_0000 + * | I/O xAPIC | + * +--------------------------+ 0xFEC0_0000 + * | Reserved | + * +--------------------------+ 0xFEB8_0000 + * | Reserved | + * +--------------------------+ 0xFEB0_0000 + * | Reserved | + * +--------------------------+ 0xFE00_0000 + * | MMIOL (relocatable) | + * | P2SB PCR cfg BAR | (0xfd000000 - 0xfdffffff + * | BAR space | [mem 0x90000000-0xfcffffff] available for PCI devices + * +--------------------------+ 0x9000_0000 + * |PCIe MMCFG (relocatable) | CONFIG_MMCONF_BASE_ADDRESS 64 or 256MB + * | | (0x80000000 - 0x8fffffff, 0x40000) + * +--------------------------+ TOLM + * | MEseg (relocatable) | 32, 64, 128 or 256 MB (0x78000000 - 0x7fffffff, 0x20000) + * +--------------------------+ + * | Tseg (relocatable) | N x 8MB (0x70000000 - 0x77ffffff, 0x20000) + * +--------------------------+ cbmem_top + * | Reserved - CBMEM | (0x6fffe000 - 0x6fffffff, 0x2000) + * +--------------------------+ + * | Reserved - FSP | (0x6fbfe000 - 0x6fffdfff, 0x400000) + * +--------------------------+ top_of_ram (0x6fbfdfff) + * | Low DRAM Memory | + * +--------------------------+ FFFFF (1MB) + * | E & F segments | + * +--------------------------+ E0000 + * | C & D segments | + * +--------------------------+ C0000 + * | VGA & SMM Memory | + * +--------------------------+ A0000 + * | Conventional Memory | + * | (DOS Range) | + * +--------------------------+ 0 + */ + +static void mc_add_dram_resources(struct device *dev, int *res_count) +{ + struct range_entry fsp_mem; + uint64_t base_kb; + uint64_t size_kb; + uint64_t top_of_ram; + uint64_t mc_values[NUM_MAP_ENTRIES]; + struct resource *resource; + int index = *res_count; + + fsp_find_reserved_memory(&fsp_mem); + + /* Read in the MAP registers and report their values. */ + mc_read_map_entries(dev, &mc_values[0]); + mc_report_map_entries(dev, &mc_values[0]); + + top_of_ram = range_entry_base(&fsp_mem) - 1; + printk(BIOS_SPEW, "cbmem_top: 0x%lx, fsp range: [0x%llx - 0x%llx], top_of_ram: 0x%llx\n", + (uintptr_t) cbmem_top(), range_entry_base(&fsp_mem), + range_entry_end(&fsp_mem), top_of_ram); + + /* Conventional Memory (DOS region, 0x0 to 0x9FFFF) */ + base_kb = 0; + size_kb = (0xa0000 >> 10); + LOG_MEM_RESOURCE("legacy_ram", dev, index, base_kb, size_kb); + ram_resource(dev, index++, base_kb, size_kb); + + /* 1MB -> top_of_ram i.e., fsp_mem_base+1*/ + base_kb = (0x100000 >> 10); + size_kb = (top_of_ram - 0xfffff) >> 10; + LOG_MEM_RESOURCE("low_ram", dev, index, base_kb, size_kb); + ram_resource(dev, index++, base_kb, size_kb); + + /* + * FSP meomoy, CBMem regions are already added as reserved + * Add TSEG and MESEG Regions as reserved memory + * src/drivers/intel/fsp2_0/memory_init.c sets CBMEM reserved size + * arch_upd->BootLoaderTolumSize = cbmem_overhead_size(); == 2 * CBMEM_ROOT_MIN_SIZE + * typically 0x2000 + * Example config: + * FSP_RESERVED_MEMORY_RESOURCE_HOB + * FspReservedMemoryResource Base : 6FBFE000 + * FspReservedMemoryResource Size : 400000 + * FSP_BOOT_LOADER_TOLUM_HOB + * FspBootLoaderTolum Base : 6FFFE000 + * FspBootLoaderTolum Size : 2000 + */ + + /* Mark TSEG/SMM region as reserved */ + base_kb = (mc_values[TSEG_BASE_REG] >> 10); + size_kb = (mc_values[TSEG_LIMIT_REG] - mc_values[TSEG_BASE_REG] + 1) >> 10; + LOG_MEM_RESOURCE("mmio_tseg", dev, index, base_kb, size_kb); + reserved_ram_resource(dev, index++, base_kb, size_kb); + + /* Mark region between TSEG - TOLM (eg. MESEG) as reserved */ + if (mc_values[TSEG_LIMIT_REG] < mc_values[TOLM_REG]) { + base_kb = ((mc_values[TSEG_LIMIT_REG] + 1) >> 10); + size_kb = (mc_values[TOLM_REG] - mc_values[TSEG_LIMIT_REG]) >> 10; + LOG_MEM_RESOURCE("mmio_tolm", dev, index, base_kb, size_kb); + reserved_ram_resource(dev, index++, base_kb, size_kb); + } + + /* 4GiB -> TOHM */ + if (mc_values[TOHM_REG] > 0x100000000) { + base_kb = (0x100000000 >> 10); + size_kb = (mc_values[TOHM_REG] - 0x100000000 + 1) >> 10; + LOG_MEM_RESOURCE("high_ram", dev, index, base_kb, size_kb); + ram_resource(dev, index++, base_kb, size_kb); + } + + /* add MMIO CFG resource */ + resource = new_resource(dev, index++); + resource->base = (resource_t) mc_values[MMCFG_BASE_REG]; + resource->size = (resource_t) (mc_values[MMCFG_LIMIT_REG] - + mc_values[MMCFG_BASE_REG] + 1); + resource->flags = IORESOURCE_MEM | IORESOURCE_RESERVE | + IORESOURCE_FIXED | IORESOURCE_STORED | IORESOURCE_ASSIGNED; + LOG_MEM_RESOURCE("mmiocfg_res", dev, index-1, (resource->base >> 10), + (resource->size >> 10)); + + /* add Local APIC resource */ + resource = new_resource(dev, index++); + resource->base = LAPIC_DEFAULT_BASE; + resource->size = 0x00001000; + resource->flags = IORESOURCE_MEM | IORESOURCE_RESERVE | + IORESOURCE_FIXED | IORESOURCE_STORED | IORESOURCE_ASSIGNED; + LOG_MEM_RESOURCE("apic_res", dev, index-1, (resource->base >> 10), + (resource->size >> 10)); + + /* + * Add legacy region as reserved - 0xa000 - 1MB + * Reserve everything between A segment and 1MB: + * + * 0xa0000 - 0xbffff: legacy VGA + * 0xc0000 - 0xfffff: RAM + */ + base_kb = VGA_BASE_ADDRESS >> 10; + size_kb = VGA_BASE_SIZE >> 10; + LOG_MEM_RESOURCE("legacy_mmio", dev, index, base_kb, size_kb); + mmio_resource(dev, index++, base_kb, size_kb); + + base_kb = (0xc0000 >> 10); + size_kb = (0x100000 - 0xc0000) >> 10; + LOG_MEM_RESOURCE("legacy_write_protect", dev, index, base_kb, size_kb); + reserved_ram_resource(dev, index++, base_kb, size_kb); + + *res_count = index; +} + +static void mmapvtd_read_resources(struct device *dev) +{ + int index = 0; + + /* Read standard PCI resources. */ + pci_dev_read_resources(dev); + + /* Calculate and add DRAM resources. */ + mc_add_dram_resources(dev, &index); +} + +static void mmapvtd_init(struct device *dev) +{ +} + +static struct device_operations mmapvtd_ops = { + .read_resources = mmapvtd_read_resources, + .set_resources = pci_dev_set_resources, + .enable_resources = pci_dev_enable_resources, + .init = mmapvtd_init, + .ops_pci = &soc_pci_ops, +#if CONFIG(HAVE_ACPI_TABLES) + .acpi_inject_dsdt_generator = NULL, +#endif +}; + +static const unsigned short mmapvtd_ids[] = { + MMAP_VTD_CFG_REG_DEVID, /* Memory Map/Intel® VT-d Configuration Registers */ + 0 +}; + +static const struct pci_driver mmapvtd_driver __pci_driver = { + .ops = &mmapvtd_ops, + .vendor = PCI_VENDOR_ID_INTEL, + .devices = mmapvtd_ids +}; |