diff options
Diffstat (limited to 'src/acpi/acpi.c')
| -rw-r--r-- | src/acpi/acpi.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/acpi/acpi.c b/src/acpi/acpi.c index c319a73aa7..a16800b025 100644 --- a/src/acpi/acpi.c +++ b/src/acpi/acpi.c @@ -878,6 +878,35 @@ void acpi_create_ivrs(acpi_ivrs_t *ivrs, header->checksum = acpi_checksum((void *)ivrs, header->length); } +void acpi_create_crat(struct acpi_crat_header *crat, + unsigned long (*acpi_fill_crat)(struct acpi_crat_header *crat_struct, + unsigned long current)) +{ + acpi_header_t *header = &(crat->header); + unsigned long current = (unsigned long)crat + sizeof(struct acpi_crat_header); + + memset((void *)crat, 0, sizeof(struct acpi_crat_header)); + + if (!header) + return; + + /* Fill out header fields. */ + memcpy(header->signature, "CRAT", 4); + memcpy(header->oem_id, OEM_ID, 6); + memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8); + memcpy(header->asl_compiler_id, ASLC, 4); + + header->asl_compiler_revision = asl_revision; + header->length = sizeof(struct acpi_crat_header); + header->revision = get_acpi_table_revision(CRAT); + + current = acpi_fill_crat(crat, current); + + /* (Re)calculate length and checksum. */ + header->length = current - (unsigned long)crat; + header->checksum = acpi_checksum((void *)crat, header->length); +} + unsigned long acpi_write_hpet(const struct device *device, unsigned long current, acpi_rsdp_t *rsdp) { @@ -1634,6 +1663,8 @@ int get_acpi_table_revision(enum acpi_tables table) return 5; case BERT: return 1; + case CRAT: + return 1; default: return -1; } |