| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <acpi/acpigen.h> |
| #include <amdblocks/memmap.h> |
| #include <amdblocks/ioapic.h> |
| #include <arch/ioapic.h> |
| #include <assert.h> |
| #include <cbmem.h> |
| #include <console/console.h> |
| #include <cpu/amd/msr.h> |
| #include <cpu/amd/mtrr.h> |
| #include <device/device.h> |
| #include <device/pci.h> |
| #include <device/pci_ids.h> |
| #include <fsp/util.h> |
| #include <stdint.h> |
| #include <soc/iomap.h> |
| #include "chip.h" |
| |
| enum { |
| ALIB_DPTCI_FUNCTION_ID = 0xc, |
| THERMAL_CONTROL_LIMIT_ID = 0x3, |
| SUSTAINED_POWER_LIMIT_PARAM_ID = 0x5, |
| FAST_PPT_LIMIT_PARAM_ID = 0x6, |
| SLOW_PPT_LIMIT_PARAM_ID = 0x7, |
| DPTC_TOTAL_UPDATE_PARAMS = 4, |
| }; |
| |
| struct dptc_param { |
| uint8_t id; |
| uint32_t value; |
| } __packed; |
| |
| struct dptc_input { |
| uint16_t size; |
| struct dptc_param params[DPTC_TOTAL_UPDATE_PARAMS]; |
| } __packed; |
| |
| #define DPTC_INPUTS(_thermctllmit, _sustained, _fast, _slow) \ |
| { \ |
| .size = sizeof(struct dptc_input), \ |
| .params = { \ |
| { \ |
| .id = THERMAL_CONTROL_LIMIT_ID, \ |
| .value = _thermctllmit, \ |
| }, \ |
| { \ |
| .id = SUSTAINED_POWER_LIMIT_PARAM_ID, \ |
| .value = _sustained, \ |
| }, \ |
| { \ |
| .id = FAST_PPT_LIMIT_PARAM_ID, \ |
| .value = _fast, \ |
| }, \ |
| { \ |
| .id = SLOW_PPT_LIMIT_PARAM_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 | |
| * | (86KiB) | |
| * +--------------------------------+ |
| * | 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 (64KiB) | |
| * +--------------------------------+ 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; |
| |
| /* 0x0 - 0x9ffff */ |
| ram_resource(dev, idx++, 0, 0xa0000 / KiB); |
| |
| /* 0xa0000 - 0xbffff: legacy VGA */ |
| mmio_resource(dev, idx++, 0xa0000 / KiB, 0x20000 / KiB); |
| |
| /* 0xc0000 - 0xfffff: Option ROM */ |
| reserved_ram_resource(dev, idx++, 0xc0000 / KiB, 0x40000 / KiB); |
| |
| /* 1MB - bottom of DRAM reserved for early coreboot usage */ |
| ram_resource(dev, idx++, (1 * MiB) / KiB, |
| (early_reserved_dram_start - (1 * MiB)) / KiB); |
| |
| /* DRAM reserved for early coreboot usage */ |
| reserved_ram_resource(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(dev, idx++, early_reserved_dram_end / KiB, |
| (mem_usable - early_reserved_dram_end) / KiB); |
| |
| mmconf_resource(dev, MMIO_CONF_BASE); |
| |
| 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(dev, idx++, res->addr / KiB, res->length / KiB); |
| else if (res->type == EFI_RESOURCE_MEMORY_RESERVED) |
| reserved_ram_resource(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, GNB_IO_APIC_ADDR); |
| 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 dptc_call_alib(const char *buf_name, uint8_t *buffer, size_t size) |
| { |
| /* Name (buf_name, Buffer(size) {...} */ |
| acpigen_write_name(buf_name); |
| acpigen_write_byte_buffer(buffer, size); |
| |
| /* \_SB.ALIB(0xc, buf_name) */ |
| acpigen_emit_namestring("\\_SB.ALIB"); |
| acpigen_write_integer(ALIB_DPTCI_FUNCTION_ID); |
| acpigen_emit_namestring(buf_name); |
| } |
| |
| static void acipgen_dptci(void) |
| { |
| const struct soc_amd_picasso_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); |
| /* Scope (\_SB) */ |
| acpigen_write_scope("\\_SB"); |
| |
| /* Method(DPTC, 0, Serialized) */ |
| acpigen_write_method_serialized("DPTC", 0); |
| |
| /* If (LEqual ("\_SB.PCI0.LPCB.EC0.TBMD", 1)) */ |
| acpigen_write_if_lequal_namestr_int("\\_SB.PCI0.LPCB.EC0.TBMD", 1); |
| |
| dptc_call_alib("TABB", (uint8_t *)(void *)&tablet_mode_input, |
| sizeof(tablet_mode_input)); |
| |
| acpigen_pop_len(); /* If */ |
| |
| /* Else */ |
| acpigen_write_else(); |
| |
| dptc_call_alib("DEFB", (uint8_t *)(void *)&default_input, sizeof(default_input)); |
| |
| acpigen_pop_len(); /* Else */ |
| |
| acpigen_pop_len(); /* Method DPTC */ |
| acpigen_pop_len(); /* Scope \_SB */ |
| } |
| |
| /* Used by \_SB.PCI0._CRS */ |
| static void root_complex_fill_ssdt(const struct device *device) |
| { |
| msr_t msr; |
| const char *scope; |
| |
| assert(device); |
| |
| scope = acpi_device_scope(device); |
| assert(scope); |
| acpigen_write_scope(scope); |
| |
| msr = rdmsr(TOP_MEM); |
| acpigen_write_name_dword("TOM1", msr.lo); |
| msr = rdmsr(TOP_MEM2); |
| /* |
| * Since XP only implements parts of ACPI 2.0, we can't use a qword |
| * here. |
| * See http://www.acpi.info/presentations/S01USMOBS169_OS%2520new.ppt |
| * slide 22ff. |
| * Shift value right by 20 bit to make it fit into 32bit, |
| * giving us 1MB granularity and a limit of almost 4Exabyte of memory. |
| */ |
| acpigen_write_name_dword("TOM2", (msr.hi << 12) | msr.lo >> 20); |
| acpigen_pop_len(); |
| acipgen_dptci(); |
| } |
| |
| 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_fill_ssdt = root_complex_fill_ssdt, |
| }; |
| |
| static const struct pci_driver family17_root_complex __pci_driver = { |
| .ops = &root_complex_operations, |
| .vendor = PCI_VENDOR_ID_AMD, |
| .device = PCI_DEVICE_ID_AMD_17H_MODEL_101F_NB, |
| }; |