/* SPDX-License-Identifier: GPL-2.0-only */ /* TODO: Check if this is still correct */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "chip.h" #define DPTC_TOTAL_UPDATE_PARAMS 4 struct dptc_input { uint16_t size; struct alib_dptc_param params[DPTC_TOTAL_UPDATE_PARAMS]; } __packed; #define DPTC_INPUTS(_thermctllmit, _sustained, _fast, _slow) \ { \ .size = sizeof(struct dptc_input), \ .params = { \ { \ .id = ALIB_DPTC_THERMAL_CONTROL_LIMIT_ID, \ .value = _thermctllmit, \ }, \ { \ .id = ALIB_DPTC_SUSTAINED_POWER_LIMIT_ID, \ .value = _sustained, \ }, \ { \ .id = ALIB_DPTC_FAST_PPT_LIMIT_ID, \ .value = _fast, \ }, \ { \ .id = ALIB_DPTC_SLOW_PPT_LIMIT_ID, \ .value = _slow, \ }, \ }, \ } /* * * +--------------------------------+ * | | * | | * | | * | | * | | * | | * | | * reserved_dram_end +--------------------------------+ * | | * | verstage (if reqd) | * | (VERSTAGE_SIZE) | * +--------------------------------+ VERSTAGE_ADDR * | | * | FSP-M | * | (FSP_M_SIZE) | * +--------------------------------+ FSP_M_ADDR * | romstage | * | (ROMSTAGE_SIZE) | * +--------------------------------+ ROMSTAGE_ADDR = BOOTBLOCK_END * | | X86_RESET_VECTOR = BOOTBLOCK_END - 0x10 * | bootblock | * | (C_ENV_BOOTBLOCK_SIZE) | * +--------------------------------+ BOOTBLOCK_ADDR = BOOTBLOCK_END - C_ENV_BOOTBLOCK_SIZE * | Unused hole | * | (30KiB) | * +--------------------------------+ * | FMAP cache (FMAP_SIZE) | * +--------------------------------+ PSP_SHAREDMEM_BASE + PSP_SHAREDMEM_SIZE + PRERAM_CBMEM_CONSOLE_SIZE + 0x200 * | Early Timestamp region (512B) | * +--------------------------------+ PSP_SHAREDMEM_BASE + PSP_SHAREDMEM_SIZE + PRERAM_CBMEM_CONSOLE_SIZE * | Preram CBMEM console | * | (PRERAM_CBMEM_CONSOLE_SIZE) | * +--------------------------------+ PSP_SHAREDMEM_BASE + PSP_SHAREDMEM_SIZE * | PSP shared (vboot workbuf) | * | (PSP_SHAREDMEM_SIZE) | * +--------------------------------+ PSP_SHAREDMEM_BASE * | APOB (120KiB) | * +--------------------------------+ PSP_APOB_DRAM_ADDRESS * | Early BSP stack | * | (EARLYRAM_BSP_STACK_SIZE) | * reserved_dram_start +--------------------------------+ EARLY_RESERVED_DRAM_BASE * | DRAM | * +--------------------------------+ 0x100000 * | Option ROM | * +--------------------------------+ 0xc0000 * | Legacy VGA | * +--------------------------------+ 0xa0000 * | DRAM | * +--------------------------------+ 0x0 */ static void read_resources(struct device *dev) { uint32_t mem_usable = (uintptr_t)cbmem_top(); unsigned int idx = 0; const struct hob_header *hob = fsp_get_hob_list(); const struct hob_resource *res; struct resource *gnb_apic; uintptr_t early_reserved_dram_start, early_reserved_dram_end; const struct memmap_early_dram *e = memmap_get_early_dram_usage(); early_reserved_dram_start = e->base; early_reserved_dram_end = e->base + e->size; /* The root complex has no PCI BARs implemented, so there's no need to call pci_dev_read_resources for it */ /* 0x0 - 0x9ffff */ ram_resource_kb(dev, idx++, 0, 0xa0000 / KiB); /* 0xa0000 - 0xbffff: legacy VGA */ mmio_resource_kb(dev, idx++, 0xa0000 / KiB, 0x20000 / KiB); /* 0xc0000 - 0xfffff: Option ROM */ reserved_ram_resource_kb(dev, idx++, 0xc0000 / KiB, 0x40000 / KiB); /* 1MiB - bottom of DRAM reserved for early coreboot usage */ ram_resource_kb(dev, idx++, (1 * MiB) / KiB, (early_reserved_dram_start - (1 * MiB)) / KiB); /* DRAM reserved for early coreboot usage */ reserved_ram_resource_kb(dev, idx++, early_reserved_dram_start / KiB, (early_reserved_dram_end - early_reserved_dram_start) / KiB); /* * top of DRAM consumed early - low top usable RAM * cbmem_top() accounts for low UMA and TSEG if they are used. */ ram_resource_kb(dev, idx++, early_reserved_dram_end / KiB, (mem_usable - early_reserved_dram_end) / KiB); mmconf_resource(dev, idx++); if (!hob) { printk(BIOS_ERR, "Error: %s incomplete because no HOB list was found\n", __func__); return; } for (; hob->type != HOB_TYPE_END_OF_HOB_LIST; hob = fsp_next_hob(hob)) { if (hob->type != HOB_TYPE_RESOURCE_DESCRIPTOR) continue; res = fsp_hob_header_to_resource(hob); if (res->type == EFI_RESOURCE_SYSTEM_MEMORY && res->addr < mem_usable) continue; /* 0 through low usable was set above */ if (res->type == EFI_RESOURCE_MEMORY_MAPPED_IO) continue; /* Done separately */ if (res->type == EFI_RESOURCE_SYSTEM_MEMORY) ram_resource_kb(dev, idx++, res->addr / KiB, res->length / KiB); else if (res->type == EFI_RESOURCE_MEMORY_RESERVED) reserved_ram_resource_kb(dev, idx++, res->addr / KiB, res->length / KiB); else printk(BIOS_ERR, "Error: failed to set resources for type %d\n", res->type); } /* GNB IOAPIC resource */ gnb_apic = new_resource(dev, idx++); gnb_apic->base = GNB_IO_APIC_ADDR; gnb_apic->size = 0x00001000; gnb_apic->flags = IORESOURCE_MEM | IORESOURCE_ASSIGNED | IORESOURCE_FIXED; } static void root_complex_init(struct device *dev) { setup_ioapic((u8 *)GNB_IO_APIC_ADDR, GNB_IOAPIC_ID); } static void acipgen_dptci(void) { const struct soc_amd_sabrina_config *config = config_of_soc(); if (!config->dptc_enable) return; struct dptc_input default_input = DPTC_INPUTS(config->thermctl_limit_degreeC, config->sustained_power_limit_mW, config->fast_ppt_limit_mW, config->slow_ppt_limit_mW); struct dptc_input tablet_mode_input = DPTC_INPUTS( config->thermctl_limit_tablet_mode_degreeC, config->sustained_power_limit_tablet_mode_mW, config->fast_ppt_limit_tablet_mode_mW, config->slow_ppt_limit_tablet_mode_mW); acpigen_write_alib_dptc((uint8_t *)&default_input, sizeof(default_input), (uint8_t *)&tablet_mode_input, sizeof(tablet_mode_input)); } static void root_complex_fill_ssdt(const struct device *device) { acpi_fill_root_complex_tom(device); acipgen_dptci(); } static const char *gnb_acpi_name(const struct device *dev) { return "GNB"; } static struct device_operations root_complex_operations = { .read_resources = read_resources, .set_resources = noop_set_resources, .enable_resources = pci_dev_enable_resources, .init = root_complex_init, .acpi_name = gnb_acpi_name, .acpi_fill_ssdt = root_complex_fill_ssdt, }; static const struct pci_driver family17_root_complex __pci_driver = { .ops = &root_complex_operations, .vendor = PCI_VID_AMD, .device = PCI_DID_AMD_17H_MODEL_A0AF_NB, };