[PATCH] Add support for ACPI 1.0 GUID

[Colin King]

From: Colin Ian King <colin.king at canonical.com>

Searches for the RSDP using the ACPI 2.0 GUID fails for
older EFI platforms, so search for the ACPI 1.0 GUID too

Signed-off-by: Colin Ian King <colin.king at canonical.com>
---
 src/lib/src/fwts_acpi_tables.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/lib/src/fwts_acpi_tables.c b/src/lib/src/fwts_acpi_tables.c
index d6ab1ce..291c59d 100644
--- a/src/lib/src/fwts_acpi_tables.c
+++ b/src/lib/src/fwts_acpi_tables.c
@@ -57,7 +57,13 @@ static acpi_table_load_state acpi_tables_loaded = ACPI_TABLES_NOT_LOADED;
  */
 static inline void *fwts_acpi_find_rsdp_efi(void)
 {
-	return fwts_scan_efi_systab("ACPI20");
+	void *addr;
+
+	addr = fwts_scan_efi_systab("ACPI20");
+	if (!addr)
+		addr = fwts_scan_efi_systab("ACPI");
+
+	return addr;
 }
 
 /*
-- 
2.0.0