diff options
Diffstat (limited to 'roms/u-boot/arch/x86/cpu/tangier/acpi.c')
| -rw-r--r-- | roms/u-boot/arch/x86/cpu/tangier/acpi.c | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/roms/u-boot/arch/x86/cpu/tangier/acpi.c b/roms/u-boot/arch/x86/cpu/tangier/acpi.c new file mode 100644 index 000000000..41bd177e0 --- /dev/null +++ b/roms/u-boot/arch/x86/cpu/tangier/acpi.c @@ -0,0 +1,127 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (c) 2017 Intel Corporation + * + * Partially based on acpi.c for other x86 platforms + */ + +#include <common.h> +#include <cpu.h> +#include <dm.h> +#include <acpi/acpi_table.h> +#include <asm/ioapic.h> +#include <asm/mpspec.h> +#include <asm/tables.h> +#include <asm/arch/global_nvs.h> +#include <asm/arch/iomap.h> +#include <dm/uclass-internal.h> + +void acpi_create_fadt(struct acpi_fadt *fadt, struct acpi_facs *facs, + void *dsdt) +{ + struct acpi_table_header *header = &(fadt->header); + + memset((void *)fadt, 0, sizeof(struct acpi_fadt)); + + acpi_fill_header(header, "FACP"); + header->length = sizeof(struct acpi_fadt); + header->revision = 6; + + fadt->firmware_ctrl = (u32)facs; + fadt->dsdt = (u32)dsdt; + fadt->preferred_pm_profile = ACPI_PM_UNSPECIFIED; + + fadt->iapc_boot_arch = ACPI_FADT_VGA_NOT_PRESENT | + ACPI_FADT_NO_PCIE_ASPM_CONTROL; + fadt->flags = + ACPI_FADT_WBINVD | + ACPI_FADT_POWER_BUTTON | ACPI_FADT_SLEEP_BUTTON | + ACPI_FADT_SEALED_CASE | ACPI_FADT_HEADLESS | + ACPI_FADT_HW_REDUCED_ACPI; + + fadt->minor_revision = 2; + + fadt->x_firmware_ctl_l = (u32)facs; + fadt->x_firmware_ctl_h = 0; + fadt->x_dsdt_l = (u32)dsdt; + fadt->x_dsdt_h = 0; + + header->checksum = table_compute_checksum(fadt, header->length); +} + +u32 acpi_fill_madt(u32 current) +{ + current += acpi_create_madt_lapics(current); + + current += acpi_create_madt_ioapic((struct acpi_madt_ioapic *)current, + io_apic_read(IO_APIC_ID) >> 24, IO_APIC_ADDR, 0); + + return current; +} + +u32 acpi_fill_mcfg(u32 current) +{ + /* TODO: Derive parameters from SFI MCFG table */ + current += acpi_create_mcfg_mmconfig + ((struct acpi_mcfg_mmconfig *)current, + MCFG_BASE_ADDRESS, 0x0, 0x0, 0x0); + + return current; +} + +static u32 acpi_fill_csrt_dma(struct acpi_csrt_group *grp) +{ + struct acpi_csrt_shared_info *si = (struct acpi_csrt_shared_info *)&grp[1]; + + /* Fill the Resource Group with Shared Information attached */ + memset(grp, 0, sizeof(*grp)); + grp->shared_info_length = sizeof(struct acpi_csrt_shared_info); + grp->length = sizeof(struct acpi_csrt_group) + grp->shared_info_length; + /* TODO: All values below should come from U-Boot DT somehow */ + sprintf((char *)&grp->vendor_id, "%04X", 0x8086); + grp->device_id = 0x11a2; + + /* Fill the Resource Group Shared Information */ + memset(si, 0, sizeof(*si)); + si->major_version = 1; + si->minor_version = 0; + /* TODO: All values below should come from U-Boot DT somehow */ + si->mmio_base_low = 0xff192000; + si->mmio_base_high = 0; + si->gsi_interrupt = 32; + si->interrupt_polarity = 1; + si->interrupt_mode = 0; + si->num_channels = 8; + si->dma_address_width = 32; + si->base_request_line = 0; + si->num_handshake_signals = 16; + si->max_block_size = 0x1ffff; + + return grp->length; +} + +u32 acpi_fill_csrt(u32 current) +{ + current += acpi_fill_csrt_dma((struct acpi_csrt_group *)current); + + return current; +} + +int acpi_create_gnvs(struct acpi_global_nvs *gnvs) +{ + struct udevice *dev; + int ret; + + /* at least we have one processor */ + gnvs->pcnt = 1; + + /* override the processor count with actual number */ + ret = uclass_find_first_device(UCLASS_CPU, &dev); + if (ret == 0 && dev != NULL) { + ret = cpu_get_count(dev); + if (ret > 0) + gnvs->pcnt = ret; + } + + return 0; +} |