diff options
Diffstat (limited to 'src/northbridge/amd/agesa/family16kb/northbridge.c')
| -rw-r--r-- | src/northbridge/amd/agesa/family16kb/northbridge.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/northbridge/amd/agesa/family16kb/northbridge.c b/src/northbridge/amd/agesa/family16kb/northbridge.c index fcd7ec1fe6..2cdcb58023 100644 --- a/src/northbridge/amd/agesa/family16kb/northbridge.c +++ b/src/northbridge/amd/agesa/family16kb/northbridge.c @@ -449,6 +449,21 @@ static void northbridge_fill_ssdt_generator(struct device *device) acpigen_pop_len(); } +static void patch_ssdt_processor_scope(acpi_header_t *ssdt) +{ + unsigned int len = ssdt->length - sizeof(acpi_header_t); + unsigned int i; + + for (i = sizeof(acpi_header_t); i < len; i++) { + /* Search for _PR_ scope and replace it with _SB_ */ + if (*(uint32_t *)((unsigned long)ssdt + i) == 0x5f52505f) + *(uint32_t *)((unsigned long)ssdt + i) = 0x5f42535f; + } + /* Recalculate checksum */ + ssdt->checksum = 0; + ssdt->checksum = acpi_checksum((void *)ssdt, ssdt->length); +} + static unsigned long agesa_write_acpi_tables(struct device *device, unsigned long current, acpi_rsdp_t *rsdp) @@ -525,6 +540,7 @@ static unsigned long agesa_write_acpi_tables(struct device *device, printk(BIOS_DEBUG, "ACPI: * SSDT at %lx\n", current); ssdt = (acpi_header_t *)agesawrapper_getlateinitptr (PICK_PSTATE); if (ssdt != NULL) { + patch_ssdt_processor_scope(ssdt); memcpy((void *)current, ssdt, ssdt->length); ssdt = (acpi_header_t *) current; current += ssdt->length; |