src/soc/amd/genoa_poc/acpi.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 /* ACPI - create the Fixed ACPI Description Tables (FADT) */
   4
   5 #include <acpi/acpi.h>
   6 #include <amdblocks/acpi.h>
   7 #include <amdblocks/acpimmio.h>
   8 #include <amdblocks/cpu.h>
   9 #include <arch/ioapic.h>
  10 #include <device/device.h>
  11 #include <vendorcode/amd/opensil/opensil.h>
  12
  13 void acpi_fill_fadt(acpi_fadt_t *fadt)
  14 {
  15         /* Fill in pm1_evt, pm1_cnt, pm_tmr, gpe0_blk from openSIL input structure */
  16         opensil_fill_fadt_io_ports(fadt);
  17
  18         fadt->pm1_evt_len = 4;  /* 32 bits */
  19         fadt->pm1_cnt_len = 2;  /* 16 bits */
  20         fadt->pm_tmr_len = 4;   /* 32 bits */
  21         fadt->gpe0_blk_len = 8; /* 64 bits */
  22
  23         fill_fadt_extended_pm_io(fadt);
  24
  25         fadt->iapc_boot_arch = ACPI_FADT_LEGACY_FREE; /* legacy free default */
  26         fadt->flags |=  ACPI_FADT_WBINVD | /* See table 5-34 ACPI 6.3 spec */
  27                         ACPI_FADT_C1_SUPPORTED |
  28                         ACPI_FADT_S4_RTC_WAKE |
  29                         ACPI_FADT_32BIT_TIMER |
  30                         ACPI_FADT_PCI_EXPRESS_WAKE |
  31                         ACPI_FADT_PLATFORM_CLOCK |
  32                         ACPI_FADT_S4_RTC_VALID |
  33                         ACPI_FADT_REMOTE_POWER_ON;
  34
  35         fadt->x_firmware_ctl_l = 0;     /* set to 0 if firmware_ctrl is used */
  36         fadt->x_firmware_ctl_h = 0;
  37 }
  38
  39 unsigned long soc_acpi_write_tables(const struct device *device, unsigned long current,
  40                                     struct acpi_rsdp *rsdp)
  41 {
  42         /* IVRS */
  43         current = acpi_add_ivrs_table(current, rsdp);
  44
  45         return current;
  46 }
  47
  48 /* There are only the following 2 C-states reported by the reference firmware */
  49 const acpi_cstate_t cstate_cfg_table[] = {
  50         [0] = {
  51                 .ctype = 1,
  52                 .latency = 1,
  53                 .power = 0,
  54         },
  55         [1] = {
  56                 .ctype = 2,
  57                 .latency = 0x12,
  58                 .power = 0,
  59         },
  60 };
  61
  62 const acpi_cstate_t *get_cstate_config_data(size_t *size)
  63 {
  64         *size = ARRAY_SIZE(cstate_cfg_table);
  65         return cstate_cfg_table;
  66 }