| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <acpi/acpi.h> |
| #include <acpi/acpigen.h> |
| #include <amdblocks/acpi.h> |
| #include <amdblocks/chip.h> |
| #include <assert.h> |
| #include <cpu/amd/mtrr.h> |
| #include <device/device.h> |
| #include <types.h> |
| |
| unsigned long southbridge_write_acpi_tables(const struct device *device, |
| unsigned long current, |
| struct acpi_rsdp *rsdp) |
| { |
| return acpi_write_hpet(device, current, rsdp); |
| } |
| |
| unsigned long acpi_fill_madt_irqoverride(unsigned long current) |
| { |
| const struct soc_amd_common_config *cfg = soc_get_common_config(); |
| unsigned int i; |
| uint8_t irq; |
| uint8_t flags; |
| |
| for (i = 0; i < ARRAY_SIZE(cfg->irq_override); ++i) { |
| irq = cfg->irq_override[i].irq; |
| flags = cfg->irq_override[i].flags; |
| |
| if (!flags) |
| continue; |
| |
| current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *)current, 0, |
| irq, irq, flags); |
| } |
| |
| return current; |
| } |
| |
| /* Used by \_SB.PCI0._CRS */ |
| void acpi_fill_root_complex_tom(const struct device *device) |
| { |
| const char *scope; |
| |
| assert(device); |
| |
| scope = acpi_device_scope(device); |
| assert(scope); |
| acpigen_write_scope(scope); |
| |
| acpigen_write_name_dword("TOM1", get_top_of_mem_below_4gb()); |
| |
| /* |
| * 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", get_top_of_mem_above_4g() >> 20); |
| acpigen_pop_len(); |
| } |