diff options
Diffstat (limited to 'src/arch/x86/acpi.c')
| -rw-r--r-- | src/arch/x86/acpi.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/src/arch/x86/acpi.c b/src/arch/x86/acpi.c index 5893461f43..4ebdcbe04d 100644 --- a/src/arch/x86/acpi.c +++ b/src/arch/x86/acpi.c @@ -307,6 +307,29 @@ static void acpi_create_tcpa(acpi_tcpa_t *tcpa) header->checksum = acpi_checksum((void *)tcpa, header->length); } +static void acpi_ssdt_write_cbtable(void) +{ + const struct cbmem_entry *cbtable; + uintptr_t base; + uint32_t size; + + cbtable = cbmem_entry_find(CBMEM_ID_CBTABLE); + if (!cbtable) + return; + base = (uintptr_t)cbmem_entry_start(cbtable); + size = cbmem_entry_size(cbtable); + + acpigen_write_device("CTBL"); + acpigen_write_coreboot_hid(COREBOOT_ACPI_ID_CBTABLE); + acpigen_write_name_integer("_UID", 0); + acpigen_write_STA(ACPI_STATUS_DEVICE_ALL_ON); + acpigen_write_name("_CRS"); + acpigen_write_resourcetemplate_header(); + acpigen_write_mem32fixed(0, base, size); + acpigen_write_resourcetemplate_footer(); + acpigen_pop_len(); +} + void acpi_create_ssdt_generator(acpi_header_t *ssdt, const char *oem_table_id) { unsigned long current = (unsigned long)ssdt + sizeof(acpi_header_t); @@ -323,6 +346,10 @@ void acpi_create_ssdt_generator(acpi_header_t *ssdt, const char *oem_table_id) ssdt->length = sizeof(acpi_header_t); acpigen_set_current((char *) current); + + /* Write object to declare coreboot tables */ + acpi_ssdt_write_cbtable(); + { struct device *dev; for (dev = all_devices; dev; dev = dev->next) |