diff options
Diffstat (limited to 'lib/acpi/acpi.c')
| -rw-r--r-- | lib/acpi/acpi.c | 37 |
1 files changed, 28 insertions, 9 deletions
diff --git a/lib/acpi/acpi.c b/lib/acpi/acpi.c index 939a638bb5..f4d5c1e25d 100644 --- a/lib/acpi/acpi.c +++ b/lib/acpi/acpi.c @@ -22,13 +22,13 @@ struct acpi_table_header *acpi_find_table(const char *sig) if (!rsdp) return NULL; if (rsdp->xsdt_address) { - xsdt = map_sysmem(rsdp->xsdt_address, 0); + xsdt = nomap_sysmem(rsdp->xsdt_address, 0); len = xsdt->header.length - sizeof(xsdt->header); count = len / sizeof(u64); } else { if (!rsdp->rsdt_address) return NULL; - rsdt = map_sysmem(rsdp->rsdt_address, 0); + rsdt = nomap_sysmem(rsdp->rsdt_address, 0); len = rsdt->header.length - sizeof(rsdt->header); count = len / sizeof(u32); } @@ -36,19 +36,38 @@ struct acpi_table_header *acpi_find_table(const char *sig) struct acpi_table_header *hdr; if (rsdp->xsdt_address) - hdr = map_sysmem(xsdt->entry[i], 0); + hdr = nomap_sysmem(xsdt->entry[i], 0); else - hdr = map_sysmem(rsdt->entry[i], 0); + hdr = nomap_sysmem(rsdt->entry[i], 0); if (!memcmp(hdr->signature, sig, ACPI_NAME_LEN)) return hdr; if (!memcmp(hdr->signature, "FACP", ACPI_NAME_LEN)) { struct acpi_fadt *fadt = (struct acpi_fadt *)hdr; - if (!memcmp(sig, "DSDT", ACPI_NAME_LEN) && fadt->dsdt) - return map_sysmem(fadt->dsdt, 0); - if (!memcmp(sig, "FACS", ACPI_NAME_LEN) && - fadt->firmware_ctrl) - return map_sysmem(fadt->firmware_ctrl, 0); + if (!memcmp(sig, "DSDT", ACPI_NAME_LEN)) { + void *dsdt; + + if (fadt->header.revision >= 3 && fadt->x_dsdt) + dsdt = nomap_sysmem(fadt->x_dsdt, 0); + else if (fadt->dsdt) + dsdt = nomap_sysmem(fadt->dsdt, 0); + else + dsdt = NULL; + return dsdt; + } + + if (!memcmp(sig, "FACS", ACPI_NAME_LEN)) { + void *facs; + + if (fadt->header.revision >= 3 && + fadt->x_firmware_ctrl) + facs = nomap_sysmem(fadt->x_firmware_ctrl, 0); + else if (fadt->firmware_ctrl) + facs = nomap_sysmem(fadt->firmware_ctrl, 0); + else + facs = NULL; + return facs; + } } } |