From c8e86de3feff539e863562f3d4d896815aff2e70 Mon Sep 17 00:00:00 2001 From: Angel Pons Date: Mon, 26 Oct 2020 00:44:38 +0100 Subject: soc/intel/broadwell/systemagent.c: Rename to `northbridge.c` MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Change-Id: Id1a0e02174456bb25df0721cfd3865645641a01a Signed-off-by: Angel Pons Reviewed-on: https://review.coreboot.org/c/coreboot/+/46797 Tested-by: build bot (Jenkins) Reviewed-by: Michael Niewöhner --- src/soc/intel/broadwell/Makefile.inc | 2 +- src/soc/intel/broadwell/northbridge.c | 482 ++++++++++++++++++++++++++++++++++ src/soc/intel/broadwell/systemagent.c | 482 ---------------------------------- 3 files changed, 483 insertions(+), 483 deletions(-) create mode 100644 src/soc/intel/broadwell/northbridge.c delete mode 100644 src/soc/intel/broadwell/systemagent.c (limited to 'src') diff --git a/src/soc/intel/broadwell/Makefile.inc b/src/soc/intel/broadwell/Makefile.inc index 7ee69908f8..7d21665138 100644 --- a/src/soc/intel/broadwell/Makefile.inc +++ b/src/soc/intel/broadwell/Makefile.inc @@ -17,11 +17,11 @@ ramstage-y += memmap.c romstage-y += memmap.c postcar-y += memmap.c ramstage-y += minihd.c +ramstage-y += northbridge.c ramstage-y += pei_data.c romstage-y += pei_data.c ramstage-y += ramstage.c ramstage-$(CONFIG_HAVE_REFCODE_BLOB) += refcode.c -ramstage-y += systemagent.c CPPFLAGS_common += -Isrc/soc/intel/broadwell/include diff --git a/src/soc/intel/broadwell/northbridge.c b/src/soc/intel/broadwell/northbridge.c new file mode 100644 index 0000000000..b9aeb388a1 --- /dev/null +++ b/src/soc/intel/broadwell/northbridge.c @@ -0,0 +1,482 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +u8 systemagent_revision(void) +{ + struct device *sa_dev = pcidev_path_on_root(SA_DEVFN_ROOT); + return pci_read_config8(sa_dev, PCI_REVISION_ID); +} + +uintptr_t sa_get_tolud_base(void) +{ + struct device *sa_dev = pcidev_path_on_root(SA_DEVFN_ROOT); + /* Bit 0 is lock bit, not part of address */ + return pci_read_config32(sa_dev, TOLUD) & ~1; +} + +uintptr_t sa_get_gsm_base(void) +{ + struct device *sa_dev = pcidev_path_on_root(SA_DEVFN_ROOT); + /* Bit 0 is lock bit, not part of address */ + return pci_read_config32(sa_dev, BGSM) & ~1; +} + +static int get_pcie_bar(struct device *dev, unsigned int index, u32 *base, + u32 *len) +{ + u32 pciexbar_reg; + + *base = 0; + *len = 0; + + pciexbar_reg = pci_read_config32(dev, index); + + 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 int get_bar(struct device *dev, unsigned int index, u32 *base, u32 *len) +{ + u32 bar; + + bar = pci_read_config32(dev, index); + + /* If not enabled don't report it. */ + if (!(bar & 0x1)) + return 0; + + /* Knock down the enable bit. */ + *base = bar & ~1; + + return 1; +} + +/* There are special BARs that actually are programmed in the MCHBAR. These + * Intel special features, but they do consume resources that need to be + * accounted for. */ +static int get_bar_in_mchbar(struct device *dev, unsigned int index, u32 *base, + u32 *len) +{ + u32 bar; + + bar = MCHBAR32(index); + + /* If not enabled don't report it. */ + if (!(bar & 0x1)) + return 0; + + /* Knock down the enable bit. */ + *base = bar & ~1; + + return 1; +} + +struct fixed_mmio_descriptor { + unsigned int index; + u32 size; + int (*get_resource)(struct device *dev, unsigned int index, + u32 *base, u32 *size); + const char *description; +}; + +struct fixed_mmio_descriptor mc_fixed_resources[] = { + { PCIEXBAR, 0, get_pcie_bar, "PCIEXBAR" }, + { MCHBAR, MCH_BASE_SIZE, get_bar, "MCHBAR" }, + { DMIBAR, DMI_BASE_SIZE, get_bar, "DMIBAR" }, + { EPBAR, EP_BASE_SIZE, get_bar, "EPBAR" }, + { GDXCBAR, GDXC_BASE_SIZE, get_bar_in_mchbar, "GDXCBAR" }, + { EDRAMBAR, EDRAM_BASE_SIZE, get_bar_in_mchbar, "EDRAMBAR" }, +}; + +/* + * Add all known fixed MMIO ranges that hang off the host bridge/memory + * controller device. + */ +static void mc_add_fixed_mmio_resources(struct device *dev) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(mc_fixed_resources); i++) { + u32 base; + u32 size; + struct resource *resource; + unsigned int index; + + size = mc_fixed_resources[i].size; + index = mc_fixed_resources[i].index; + if (!mc_fixed_resources[i].get_resource(dev, index, + &base, &size)) + continue; + + resource = new_resource(dev, mc_fixed_resources[i].index); + resource->flags = IORESOURCE_MEM | IORESOURCE_FIXED | + IORESOURCE_STORED | IORESOURCE_RESERVE | + IORESOURCE_ASSIGNED; + resource->base = base; + resource->size = size; + printk(BIOS_DEBUG, "%s: Adding %s @ %x 0x%08lx-0x%08lx.\n", + __func__, mc_fixed_resources[i].description, index, + (unsigned long)base, (unsigned long)(base + size - 1)); + } +} + +/* Host Memory Map: + * + * +--------------------------+ TOUUD + * | | + * +--------------------------+ 4GiB + * | PCI Address Space | + * +--------------------------+ TOLUD (also maps into MC address space) + * | iGD | + * +--------------------------+ BDSM + * | GTT | + * +--------------------------+ BGSM + * | TSEG | + * +--------------------------+ TSEGMB + * | Usage DRAM | + * +--------------------------+ 0 + * + * Some of the base registers above can be equal making the size of those + * regions 0. The reason is because the memory controller internally subtracts + * the base registers from each other to determine sizes of the regions. In + * other words, the memory map is in a fixed order no matter what. + */ + +struct map_entry { + int reg; + int is_64_bit; + int is_limit; + const char *description; +}; + +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<<20)-1); + mask = ~mask; + + value = 0; + + if (entry->is_64_bit) { + value = pci_read_config32(dev, entry->reg + 4); + value <<= 32; + } + + value |= pci_read_config32(dev, entry->reg); + value &= mask; + + if (entry->is_limit) + value |= ~mask; + + *result = value; +} + +#define MAP_ENTRY(reg_, is_64_, is_limit_, desc_) \ + { \ + .reg = reg_, \ + .is_64_bit = is_64_, \ + .is_limit = is_limit_, \ + .description = desc_, \ + } + +#define MAP_ENTRY_BASE_64(reg_, desc_) \ + MAP_ENTRY(reg_, 1, 0, desc_) +#define MAP_ENTRY_LIMIT_64(reg_, desc_) \ + MAP_ENTRY(reg_, 1, 1, desc_) +#define MAP_ENTRY_BASE_32(reg_, desc_) \ + MAP_ENTRY(reg_, 0, 0, desc_) + +enum { + TOM_REG, + TOUUD_REG, + MESEG_BASE_REG, + MESEG_LIMIT_REG, + REMAP_BASE_REG, + REMAP_LIMIT_REG, + TOLUD_REG, + BGSM_REG, + BDSM_REG, + TSEG_REG, + // Must be last. + NUM_MAP_ENTRIES +}; + +static struct map_entry memory_map[NUM_MAP_ENTRIES] = { + [TOM_REG] = MAP_ENTRY_BASE_64(TOM, "TOM"), + [TOUUD_REG] = MAP_ENTRY_BASE_64(TOUUD, "TOUUD"), + [MESEG_BASE_REG] = MAP_ENTRY_BASE_64(MESEG_BASE, "MESEG_BASE"), + [MESEG_LIMIT_REG] = MAP_ENTRY_LIMIT_64(MESEG_LIMIT, "MESEG_LIMIT"), + [REMAP_BASE_REG] = MAP_ENTRY_BASE_64(REMAPBASE, "REMAP_BASE"), + [REMAP_LIMIT_REG] = MAP_ENTRY_LIMIT_64(REMAPLIMIT, "REMAP_LIMIT"), + [TOLUD_REG] = MAP_ENTRY_BASE_32(TOLUD, "TOLUD"), + [BDSM_REG] = MAP_ENTRY_BASE_32(BDSM, "BDSM"), + [BGSM_REG] = MAP_ENTRY_BASE_32(BGSM, "BGSM"), + [TSEG_REG] = MAP_ENTRY_BASE_32(TSEG, "TSEGMB"), +}; + +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]); + } + /* One can validate the BDSM and BGSM against the GGC. */ + printk(BIOS_DEBUG, "MC MAP: GGC: 0x%x\n", pci_read_config16(dev, GGC)); +} + +static void mc_add_dram_resources(struct device *dev, int *resource_cnt) +{ + unsigned long base_k, size_k; + unsigned long touud_k; + unsigned long index; + struct resource *resource; + uint64_t mc_values[NUM_MAP_ENTRIES]; + unsigned long dpr_size = 0; + u32 dpr_reg; + struct device *sa_dev = pcidev_path_on_root(SA_DEVFN_ROOT); + + /* 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]); + + /* + * DMA Protected Range can be reserved below TSEG for PCODE patch + * or TXT/BootGuard related data. Rather than report a base address + * the DPR register reports the TOP of the region, which is the same + * as TSEG base. The region size is reported in MiB in bits 11:4. + */ + dpr_reg = pci_read_config32(sa_dev, DPR); + if (dpr_reg & DPR_EPM) { + dpr_size = (dpr_reg & DPR_SIZE_MASK) << 16; + printk(BIOS_INFO, "DPR SIZE: 0x%lx\n", dpr_size); + } + + /* + * These are the host memory ranges that should be added: + * - 0 -> 0xa0000: cacheable + * - 0xc0000 -> TSEG : cacheable + * - TESG -> BGSM: cacheable with standard MTRRs and reserved + * - BGSM -> TOLUD: not cacheable with standard MTRRs and reserved + * - 4GiB -> TOUUD: cacheable + * + * The default SMRAM space is reserved so that the range doesn't + * have to be saved during S3 Resume. Once marked reserved the OS + * cannot use the memory. This is a bit of an odd place to reserve + * the region, but the CPU devices don't have dev_ops->read_resources() + * called on them. + * + * The range 0xa0000 -> 0xc0000 does not have any resources + * associated with it to handle legacy VGA memory. If this range + * is not omitted the mtrr code will setup the area as cacheable + * causing VGA access to not work. + * + * The TSEG region is mapped as cacheable so that one can perform + * SMRAM relocation faster. Once the SMRR is enabled the SMRR takes + * precedence over the existing MTRRs covering this region. + * + * It should be noted that cacheable entry types need to be added in + * order. The reason is that the current MTRR code assumes this and + * falls over itself if it isn't. + * + * The resource index starts low and should not meet or exceed + * PCI_BASE_ADDRESS_0. + */ + index = *resource_cnt; + + /* 0 - > 0xa0000 */ + base_k = 0; + size_k = (0xa0000 >> 10) - base_k; + ram_resource(dev, index++, base_k, size_k); + + /* 0xc0000 -> TSEG - DPR */ + base_k = 0xc0000 >> 10; + size_k = (unsigned long)(mc_values[TSEG_REG] >> 10) - base_k; + size_k -= dpr_size >> 10; + ram_resource(dev, index++, base_k, size_k); + + /* TSEG - DPR -> BGSM */ + resource = new_resource(dev, index++); + resource->base = mc_values[TSEG_REG] - dpr_size; + resource->size = mc_values[BGSM_REG] - resource->base; + resource->flags = IORESOURCE_MEM | IORESOURCE_FIXED | + IORESOURCE_STORED | IORESOURCE_RESERVE | + IORESOURCE_ASSIGNED | IORESOURCE_CACHEABLE; + + /* BGSM -> TOLUD */ + resource = new_resource(dev, index++); + resource->base = mc_values[BGSM_REG]; + resource->size = mc_values[TOLUD_REG] - resource->base; + resource->flags = IORESOURCE_MEM | IORESOURCE_FIXED | + IORESOURCE_STORED | IORESOURCE_RESERVE | + IORESOURCE_ASSIGNED; + + /* 4GiB -> TOUUD */ + base_k = 4096 * 1024; /* 4GiB */ + touud_k = mc_values[TOUUD_REG] >> 10; + size_k = touud_k - base_k; + if (touud_k > base_k) + ram_resource(dev, index++, base_k, size_k); + + /* Reserve everything between A segment and 1MB: + * + * 0xa0000 - 0xbffff: legacy VGA + * 0xc0000 - 0xfffff: RAM + */ + mmio_resource(dev, index++, (0xa0000 >> 10), (0xc0000 - 0xa0000) >> 10); + reserved_ram_resource(dev, index++, (0xc0000 >> 10), + (0x100000 - 0xc0000) >> 10); + + if (CONFIG(CHROMEOS)) + chromeos_reserve_ram_oops(dev, index++); + + *resource_cnt = index; +} + +static void systemagent_read_resources(struct device *dev) +{ + int index = 0; + const bool vtd_capable = + !(pci_read_config32(dev, CAPID0_A) & VTD_DISABLE); + + /* Read standard PCI resources. */ + pci_dev_read_resources(dev); + + /* Add all fixed MMIO resources. */ + mc_add_fixed_mmio_resources(dev); + + /* Add VT-d MMIO resources if capable */ + if (vtd_capable) { + mmio_resource(dev, index++, GFXVT_BASE_ADDRESS / KiB, + GFXVT_BASE_SIZE / KiB); + mmio_resource(dev, index++, VTVC0_BASE_ADDRESS / KiB, + VTVC0_BASE_SIZE / KiB); + } + + /* Calculate and add DRAM resources. */ + mc_add_dram_resources(dev, &index); +} + +static void systemagent_init(struct device *dev) +{ + u8 bios_reset_cpl, pair; + + /* Enable Power Aware Interrupt Routing */ + pair = MCHBAR8(MCH_PAIR); + pair &= ~0x7; /* Clear 2:0 */ + pair |= 0x4; /* Fixed Priority */ + MCHBAR8(MCH_PAIR) = pair; + + /* + * Set bits 0+1 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 |= 3; + MCHBAR8(BIOS_RESET_CPL) = bios_reset_cpl; + printk(BIOS_DEBUG, "Set BIOS_RESET_CPL\n"); + + /* Configure turbo power limits 1ms after reset complete bit */ + mdelay(1); + set_power_limits(28); +} + +static struct device_operations systemagent_ops = { + .read_resources = systemagent_read_resources, + .acpi_fill_ssdt = generate_cpu_entries, + .set_resources = pci_dev_set_resources, + .enable_resources = pci_dev_enable_resources, + .init = systemagent_init, + .ops_pci = &pci_dev_ops_pci, +}; + +static const unsigned short systemagent_ids[] = { + 0x0a04, /* Haswell ULT */ + 0x1604, /* Broadwell-U/Y */ + 0x1610, /* Broadwell-H Desktop */ + 0x1614, /* Broadwell-H Mobile */ + 0 +}; + +static const struct pci_driver systemagent_driver __pci_driver = { + .ops = &systemagent_ops, + .vendor = PCI_VENDOR_ID_INTEL, + .devices = systemagent_ids +}; + +static struct device_operations pci_domain_ops = { + .read_resources = &pci_domain_read_resources, + .set_resources = &pci_domain_set_resources, + .scan_bus = &pci_domain_scan_bus, +#if CONFIG(HAVE_ACPI_TABLES) + .write_acpi_tables = &northbridge_write_acpi_tables, +#endif +}; + +static struct device_operations cpu_bus_ops = { + .read_resources = noop_read_resources, + .set_resources = noop_set_resources, + .init = &broadwell_init_cpus, +}; + +static void broadwell_enable(struct device *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 soc_intel_broadwell_ops = { + CHIP_NAME("Intel Broadwell") + .enable_dev = &broadwell_enable, + .init = &broadwell_init_pre_device, +}; diff --git a/src/soc/intel/broadwell/systemagent.c b/src/soc/intel/broadwell/systemagent.c deleted file mode 100644 index b9aeb388a1..0000000000 --- a/src/soc/intel/broadwell/systemagent.c +++ /dev/null @@ -1,482 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -u8 systemagent_revision(void) -{ - struct device *sa_dev = pcidev_path_on_root(SA_DEVFN_ROOT); - return pci_read_config8(sa_dev, PCI_REVISION_ID); -} - -uintptr_t sa_get_tolud_base(void) -{ - struct device *sa_dev = pcidev_path_on_root(SA_DEVFN_ROOT); - /* Bit 0 is lock bit, not part of address */ - return pci_read_config32(sa_dev, TOLUD) & ~1; -} - -uintptr_t sa_get_gsm_base(void) -{ - struct device *sa_dev = pcidev_path_on_root(SA_DEVFN_ROOT); - /* Bit 0 is lock bit, not part of address */ - return pci_read_config32(sa_dev, BGSM) & ~1; -} - -static int get_pcie_bar(struct device *dev, unsigned int index, u32 *base, - u32 *len) -{ - u32 pciexbar_reg; - - *base = 0; - *len = 0; - - pciexbar_reg = pci_read_config32(dev, index); - - 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 int get_bar(struct device *dev, unsigned int index, u32 *base, u32 *len) -{ - u32 bar; - - bar = pci_read_config32(dev, index); - - /* If not enabled don't report it. */ - if (!(bar & 0x1)) - return 0; - - /* Knock down the enable bit. */ - *base = bar & ~1; - - return 1; -} - -/* There are special BARs that actually are programmed in the MCHBAR. These - * Intel special features, but they do consume resources that need to be - * accounted for. */ -static int get_bar_in_mchbar(struct device *dev, unsigned int index, u32 *base, - u32 *len) -{ - u32 bar; - - bar = MCHBAR32(index); - - /* If not enabled don't report it. */ - if (!(bar & 0x1)) - return 0; - - /* Knock down the enable bit. */ - *base = bar & ~1; - - return 1; -} - -struct fixed_mmio_descriptor { - unsigned int index; - u32 size; - int (*get_resource)(struct device *dev, unsigned int index, - u32 *base, u32 *size); - const char *description; -}; - -struct fixed_mmio_descriptor mc_fixed_resources[] = { - { PCIEXBAR, 0, get_pcie_bar, "PCIEXBAR" }, - { MCHBAR, MCH_BASE_SIZE, get_bar, "MCHBAR" }, - { DMIBAR, DMI_BASE_SIZE, get_bar, "DMIBAR" }, - { EPBAR, EP_BASE_SIZE, get_bar, "EPBAR" }, - { GDXCBAR, GDXC_BASE_SIZE, get_bar_in_mchbar, "GDXCBAR" }, - { EDRAMBAR, EDRAM_BASE_SIZE, get_bar_in_mchbar, "EDRAMBAR" }, -}; - -/* - * Add all known fixed MMIO ranges that hang off the host bridge/memory - * controller device. - */ -static void mc_add_fixed_mmio_resources(struct device *dev) -{ - int i; - - for (i = 0; i < ARRAY_SIZE(mc_fixed_resources); i++) { - u32 base; - u32 size; - struct resource *resource; - unsigned int index; - - size = mc_fixed_resources[i].size; - index = mc_fixed_resources[i].index; - if (!mc_fixed_resources[i].get_resource(dev, index, - &base, &size)) - continue; - - resource = new_resource(dev, mc_fixed_resources[i].index); - resource->flags = IORESOURCE_MEM | IORESOURCE_FIXED | - IORESOURCE_STORED | IORESOURCE_RESERVE | - IORESOURCE_ASSIGNED; - resource->base = base; - resource->size = size; - printk(BIOS_DEBUG, "%s: Adding %s @ %x 0x%08lx-0x%08lx.\n", - __func__, mc_fixed_resources[i].description, index, - (unsigned long)base, (unsigned long)(base + size - 1)); - } -} - -/* Host Memory Map: - * - * +--------------------------+ TOUUD - * | | - * +--------------------------+ 4GiB - * | PCI Address Space | - * +--------------------------+ TOLUD (also maps into MC address space) - * | iGD | - * +--------------------------+ BDSM - * | GTT | - * +--------------------------+ BGSM - * | TSEG | - * +--------------------------+ TSEGMB - * | Usage DRAM | - * +--------------------------+ 0 - * - * Some of the base registers above can be equal making the size of those - * regions 0. The reason is because the memory controller internally subtracts - * the base registers from each other to determine sizes of the regions. In - * other words, the memory map is in a fixed order no matter what. - */ - -struct map_entry { - int reg; - int is_64_bit; - int is_limit; - const char *description; -}; - -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<<20)-1); - mask = ~mask; - - value = 0; - - if (entry->is_64_bit) { - value = pci_read_config32(dev, entry->reg + 4); - value <<= 32; - } - - value |= pci_read_config32(dev, entry->reg); - value &= mask; - - if (entry->is_limit) - value |= ~mask; - - *result = value; -} - -#define MAP_ENTRY(reg_, is_64_, is_limit_, desc_) \ - { \ - .reg = reg_, \ - .is_64_bit = is_64_, \ - .is_limit = is_limit_, \ - .description = desc_, \ - } - -#define MAP_ENTRY_BASE_64(reg_, desc_) \ - MAP_ENTRY(reg_, 1, 0, desc_) -#define MAP_ENTRY_LIMIT_64(reg_, desc_) \ - MAP_ENTRY(reg_, 1, 1, desc_) -#define MAP_ENTRY_BASE_32(reg_, desc_) \ - MAP_ENTRY(reg_, 0, 0, desc_) - -enum { - TOM_REG, - TOUUD_REG, - MESEG_BASE_REG, - MESEG_LIMIT_REG, - REMAP_BASE_REG, - REMAP_LIMIT_REG, - TOLUD_REG, - BGSM_REG, - BDSM_REG, - TSEG_REG, - // Must be last. - NUM_MAP_ENTRIES -}; - -static struct map_entry memory_map[NUM_MAP_ENTRIES] = { - [TOM_REG] = MAP_ENTRY_BASE_64(TOM, "TOM"), - [TOUUD_REG] = MAP_ENTRY_BASE_64(TOUUD, "TOUUD"), - [MESEG_BASE_REG] = MAP_ENTRY_BASE_64(MESEG_BASE, "MESEG_BASE"), - [MESEG_LIMIT_REG] = MAP_ENTRY_LIMIT_64(MESEG_LIMIT, "MESEG_LIMIT"), - [REMAP_BASE_REG] = MAP_ENTRY_BASE_64(REMAPBASE, "REMAP_BASE"), - [REMAP_LIMIT_REG] = MAP_ENTRY_LIMIT_64(REMAPLIMIT, "REMAP_LIMIT"), - [TOLUD_REG] = MAP_ENTRY_BASE_32(TOLUD, "TOLUD"), - [BDSM_REG] = MAP_ENTRY_BASE_32(BDSM, "BDSM"), - [BGSM_REG] = MAP_ENTRY_BASE_32(BGSM, "BGSM"), - [TSEG_REG] = MAP_ENTRY_BASE_32(TSEG, "TSEGMB"), -}; - -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]); - } - /* One can validate the BDSM and BGSM against the GGC. */ - printk(BIOS_DEBUG, "MC MAP: GGC: 0x%x\n", pci_read_config16(dev, GGC)); -} - -static void mc_add_dram_resources(struct device *dev, int *resource_cnt) -{ - unsigned long base_k, size_k; - unsigned long touud_k; - unsigned long index; - struct resource *resource; - uint64_t mc_values[NUM_MAP_ENTRIES]; - unsigned long dpr_size = 0; - u32 dpr_reg; - struct device *sa_dev = pcidev_path_on_root(SA_DEVFN_ROOT); - - /* 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]); - - /* - * DMA Protected Range can be reserved below TSEG for PCODE patch - * or TXT/BootGuard related data. Rather than report a base address - * the DPR register reports the TOP of the region, which is the same - * as TSEG base. The region size is reported in MiB in bits 11:4. - */ - dpr_reg = pci_read_config32(sa_dev, DPR); - if (dpr_reg & DPR_EPM) { - dpr_size = (dpr_reg & DPR_SIZE_MASK) << 16; - printk(BIOS_INFO, "DPR SIZE: 0x%lx\n", dpr_size); - } - - /* - * These are the host memory ranges that should be added: - * - 0 -> 0xa0000: cacheable - * - 0xc0000 -> TSEG : cacheable - * - TESG -> BGSM: cacheable with standard MTRRs and reserved - * - BGSM -> TOLUD: not cacheable with standard MTRRs and reserved - * - 4GiB -> TOUUD: cacheable - * - * The default SMRAM space is reserved so that the range doesn't - * have to be saved during S3 Resume. Once marked reserved the OS - * cannot use the memory. This is a bit of an odd place to reserve - * the region, but the CPU devices don't have dev_ops->read_resources() - * called on them. - * - * The range 0xa0000 -> 0xc0000 does not have any resources - * associated with it to handle legacy VGA memory. If this range - * is not omitted the mtrr code will setup the area as cacheable - * causing VGA access to not work. - * - * The TSEG region is mapped as cacheable so that one can perform - * SMRAM relocation faster. Once the SMRR is enabled the SMRR takes - * precedence over the existing MTRRs covering this region. - * - * It should be noted that cacheable entry types need to be added in - * order. The reason is that the current MTRR code assumes this and - * falls over itself if it isn't. - * - * The resource index starts low and should not meet or exceed - * PCI_BASE_ADDRESS_0. - */ - index = *resource_cnt; - - /* 0 - > 0xa0000 */ - base_k = 0; - size_k = (0xa0000 >> 10) - base_k; - ram_resource(dev, index++, base_k, size_k); - - /* 0xc0000 -> TSEG - DPR */ - base_k = 0xc0000 >> 10; - size_k = (unsigned long)(mc_values[TSEG_REG] >> 10) - base_k; - size_k -= dpr_size >> 10; - ram_resource(dev, index++, base_k, size_k); - - /* TSEG - DPR -> BGSM */ - resource = new_resource(dev, index++); - resource->base = mc_values[TSEG_REG] - dpr_size; - resource->size = mc_values[BGSM_REG] - resource->base; - resource->flags = IORESOURCE_MEM | IORESOURCE_FIXED | - IORESOURCE_STORED | IORESOURCE_RESERVE | - IORESOURCE_ASSIGNED | IORESOURCE_CACHEABLE; - - /* BGSM -> TOLUD */ - resource = new_resource(dev, index++); - resource->base = mc_values[BGSM_REG]; - resource->size = mc_values[TOLUD_REG] - resource->base; - resource->flags = IORESOURCE_MEM | IORESOURCE_FIXED | - IORESOURCE_STORED | IORESOURCE_RESERVE | - IORESOURCE_ASSIGNED; - - /* 4GiB -> TOUUD */ - base_k = 4096 * 1024; /* 4GiB */ - touud_k = mc_values[TOUUD_REG] >> 10; - size_k = touud_k - base_k; - if (touud_k > base_k) - ram_resource(dev, index++, base_k, size_k); - - /* Reserve everything between A segment and 1MB: - * - * 0xa0000 - 0xbffff: legacy VGA - * 0xc0000 - 0xfffff: RAM - */ - mmio_resource(dev, index++, (0xa0000 >> 10), (0xc0000 - 0xa0000) >> 10); - reserved_ram_resource(dev, index++, (0xc0000 >> 10), - (0x100000 - 0xc0000) >> 10); - - if (CONFIG(CHROMEOS)) - chromeos_reserve_ram_oops(dev, index++); - - *resource_cnt = index; -} - -static void systemagent_read_resources(struct device *dev) -{ - int index = 0; - const bool vtd_capable = - !(pci_read_config32(dev, CAPID0_A) & VTD_DISABLE); - - /* Read standard PCI resources. */ - pci_dev_read_resources(dev); - - /* Add all fixed MMIO resources. */ - mc_add_fixed_mmio_resources(dev); - - /* Add VT-d MMIO resources if capable */ - if (vtd_capable) { - mmio_resource(dev, index++, GFXVT_BASE_ADDRESS / KiB, - GFXVT_BASE_SIZE / KiB); - mmio_resource(dev, index++, VTVC0_BASE_ADDRESS / KiB, - VTVC0_BASE_SIZE / KiB); - } - - /* Calculate and add DRAM resources. */ - mc_add_dram_resources(dev, &index); -} - -static void systemagent_init(struct device *dev) -{ - u8 bios_reset_cpl, pair; - - /* Enable Power Aware Interrupt Routing */ - pair = MCHBAR8(MCH_PAIR); - pair &= ~0x7; /* Clear 2:0 */ - pair |= 0x4; /* Fixed Priority */ - MCHBAR8(MCH_PAIR) = pair; - - /* - * Set bits 0+1 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 |= 3; - MCHBAR8(BIOS_RESET_CPL) = bios_reset_cpl; - printk(BIOS_DEBUG, "Set BIOS_RESET_CPL\n"); - - /* Configure turbo power limits 1ms after reset complete bit */ - mdelay(1); - set_power_limits(28); -} - -static struct device_operations systemagent_ops = { - .read_resources = systemagent_read_resources, - .acpi_fill_ssdt = generate_cpu_entries, - .set_resources = pci_dev_set_resources, - .enable_resources = pci_dev_enable_resources, - .init = systemagent_init, - .ops_pci = &pci_dev_ops_pci, -}; - -static const unsigned short systemagent_ids[] = { - 0x0a04, /* Haswell ULT */ - 0x1604, /* Broadwell-U/Y */ - 0x1610, /* Broadwell-H Desktop */ - 0x1614, /* Broadwell-H Mobile */ - 0 -}; - -static const struct pci_driver systemagent_driver __pci_driver = { - .ops = &systemagent_ops, - .vendor = PCI_VENDOR_ID_INTEL, - .devices = systemagent_ids -}; - -static struct device_operations pci_domain_ops = { - .read_resources = &pci_domain_read_resources, - .set_resources = &pci_domain_set_resources, - .scan_bus = &pci_domain_scan_bus, -#if CONFIG(HAVE_ACPI_TABLES) - .write_acpi_tables = &northbridge_write_acpi_tables, -#endif -}; - -static struct device_operations cpu_bus_ops = { - .read_resources = noop_read_resources, - .set_resources = noop_set_resources, - .init = &broadwell_init_cpus, -}; - -static void broadwell_enable(struct device *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 soc_intel_broadwell_ops = { - CHIP_NAME("Intel Broadwell") - .enable_dev = &broadwell_enable, - .init = &broadwell_init_pre_device, -}; -- cgit v1.2.3