src/acpi/acpi_pm.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <acpi/acpi.h>
   4 #include <acpi/acpi_gnvs.h>
   5 #include <acpi/acpi_pm.h>
   6 #include <assert.h>
   7 #include <cbmem.h>
   8 #include <console/console.h>
   9 #include <smbios.h>
  10
  11 static const char *pm_fetch_failure_msg[PS_CLAIMER_MAX] = {
  12         [PS_CLAIMER_ELOG]       = "no event recorded in ELOG.",
  13         [PS_CLAIMER_RTC]        = "RTC init aborted.",
  14         [PS_CLAIMER_WAKE]       = "wake source unknown.",
  15 };
  16
  17 void __weak mainboard_suspend_resume(void)
  18 {
  19 }
  20
  21 /* Default mapping to ACPI FADT preferred_pm_profile field. */
  22 uint8_t acpi_get_preferred_pm_profile(void)
  23 {
  24         switch (smbios_mainboard_enclosure_type()) {
  25         case SMBIOS_ENCLOSURE_LAPTOP:
  26         case SMBIOS_ENCLOSURE_CONVERTIBLE:
  27                 return PM_MOBILE;
  28         case SMBIOS_ENCLOSURE_DETACHABLE:
  29         case SMBIOS_ENCLOSURE_TABLET:
  30                 return PM_TABLET;
  31         case SMBIOS_ENCLOSURE_DESKTOP:
  32                 return PM_DESKTOP;
  33         case SMBIOS_ENCLOSURE_UNKNOWN:
  34         default:
  35                 return PM_UNSPECIFIED;
  36         }
  37 }
  38
  39 struct chipset_power_state *acpi_get_pm_state(void)
  40 {
  41         static struct chipset_power_state *acpi_pm_state;
  42         if (acpi_pm_state)
  43                 return acpi_pm_state;
  44
  45         acpi_pm_state = cbmem_find(CBMEM_ID_POWER_STATE);
  46         return acpi_pm_state;
  47 }
  48
  49 int acpi_fetch_pm_state(const struct chipset_power_state **ps,
  50                         enum power_state_claimer ps_claimer)
  51 {
  52         assert(ps_claimer < PS_CLAIMER_MAX);
  53         *ps = acpi_get_pm_state();
  54
  55         if (!*ps) {
  56                 printk(BIOS_ERR, "No CBMEM_ID_POWER_STATE entry, %s\n",
  57                        ps_claimer < PS_CLAIMER_MAX ?
  58                        pm_fetch_failure_msg[ps_claimer] : "unknown claimer.");
  59                 return -1;
  60         }
  61         return 0;
  62 }
  63
  64 /* Not every <soc/nvs.h> exists and has required fields. */
  65 #if CONFIG(ACPI_GNVS_USB_CHARGECTL) && ENV_SMM
  66
  67 #include <cpu/x86/smm.h>
  68 #include <soc/nvs.h>
  69
  70 void usb_charge_mode_from_gnvs(uint8_t slp_typ, bool *usb0_disable, bool *usb1_disable)
  71 {
  72         if (!gnvs)
  73                 return;
  74
  75         switch (slp_typ) {
  76         case ACPI_S3:
  77                 *usb0_disable = (gnvs->s3u0 == 0);
  78                 *usb1_disable = (gnvs->s3u1 == 0);
  79                 break;
  80         case ACPI_S4:
  81         case ACPI_S5:
  82                 *usb0_disable = (gnvs->s5u0 == 0);
  83                 *usb1_disable = (gnvs->s5u1 == 0);
  84                 break;
  85         }
  86 }
  87
  88 #endif /* CONFIG(ACPI_GNVS_USB_CHARGECTL) */