diff options
Diffstat (limited to 'src/include/acpi/acpi.h')
| -rw-r--r-- | src/include/acpi/acpi.h | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/src/include/acpi/acpi.h b/src/include/acpi/acpi.h index b5421e74cb..c5a04f0acc 100644 --- a/src/include/acpi/acpi.h +++ b/src/include/acpi/acpi.h @@ -747,7 +747,7 @@ typedef struct acpi_fadt { acpi_addr_t reset_reg; u8 reset_value; u16 ARM_boot_arch; /* Revision 6 only, Revision 5: Must be zero */ - u8 FADT_MinorVersion; /* Revision 6 only, Revision 5: Must be zero */ + u8 FADT_MinorVersion; /* Must be zero if ACPI Revision <= 5.0 */ u32 x_firmware_ctl_l; u32 x_firmware_ctl_h; u32 x_dsdt_l; @@ -768,12 +768,21 @@ typedef struct acpi_fadt { } __packed acpi_fadt_t; /* FADT TABLE Revision values */ -#define ACPI_FADT_REV_ACPI_1_0 1 -#define ACPI_FADT_REV_ACPI_2_0 3 -#define ACPI_FADT_REV_ACPI_3_0 4 -#define ACPI_FADT_REV_ACPI_4_0 4 -#define ACPI_FADT_REV_ACPI_5_0 5 -#define ACPI_FADT_REV_ACPI_6_0 6 +#define ACPI_FADT_REV_ACPI_1 1 +#define ACPI_FADT_REV_ACPI_2 3 +#define ACPI_FADT_REV_ACPI_3 4 +#define ACPI_FADT_REV_ACPI_4 4 +#define ACPI_FADT_REV_ACPI_5 5 +#define ACPI_FADT_REV_ACPI_6 6 + +/* FADT Minor Version value: + * Bits 0-3: minor version + * Bits 4-7: Errata + * value of 1 means this is compatible with Errata A, + * value of 2 would be compatible with Errata B, and so on + * Version 6.3 Errata A would be: (1 << 4) | 3 + */ +#define ACPI_FADT_MINOR_VERSION_0 0 /* coreboot currently use this version */ /* Flags for p_lvl2_lat and p_lvl3_lat */ #define ACPI_FADT_C2_NOT_SUPPORTED 101 @@ -1434,6 +1443,7 @@ static inline uintptr_t acpi_align_current(uintptr_t current) * be made into a weak function if there is ever a need to override the * coreboot default ACPI spec version supported. */ int get_acpi_table_revision(enum acpi_tables table); +u8 get_acpi_fadt_minor_version(void); #endif // !defined(__ASSEMBLER__) && !defined(__ACPI__) |