diff options
Diffstat (limited to 'src/arch/x86/boot')
| -rw-r--r-- | src/arch/x86/boot/acpi.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/src/arch/x86/boot/acpi.c b/src/arch/x86/boot/acpi.c index 3a30d31b71..c4f5fca404 100644 --- a/src/arch/x86/boot/acpi.c +++ b/src/arch/x86/boot/acpi.c @@ -707,8 +707,25 @@ unsigned long write_acpi_tables(unsigned long start) printk(BIOS_DEBUG, "ACPI: * DSDT\n"); dsdt = (acpi_header_t *) current; memcpy(dsdt, &AmlCode, sizeof(acpi_header_t)); - current += dsdt->length; - memcpy(dsdt, &AmlCode, dsdt->length); + if (dsdt->length >= sizeof(acpi_header_t)) { + current += sizeof(acpi_header_t); + + acpigen_set_current((char *) current); + for (dev = all_devices; dev; dev = dev->next) + if (dev->ops && dev->ops->acpi_inject_dsdt_generator) { + dev->ops->acpi_inject_dsdt_generator(); + } + current = (unsigned long) acpigen_get_current(); + memcpy((char *)current, + (char *)&AmlCode + sizeof(acpi_header_t), + dsdt->length - sizeof(acpi_header_t)); + current += dsdt->length - sizeof(acpi_header_t); + + /* (Re)calculate length and checksum. */ + dsdt->length = current - (unsigned long)dsdt; + dsdt->checksum = 0; + dsdt->checksum = acpi_checksum((void *)dsdt, dsdt->length); + } ALIGN_CURRENT; |