drivers/intel/fsp1_1: Add fsp_write_line function

Add fsp_write_line function which may be called by FSP to output debug
serial data to the console.

TEST=Build and run on Galileo Gen2

Change-Id: Ib01aef448798e47ac613b38eb20bf25537b9221f
Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com>
Reviewed-on: https://review.coreboot.org/16128
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>

2 files changed, 16 insertions, 0 deletions

diff --git a/src/drivers/intel/fsp1_1/fsp_util.c b/src/drivers/intel/fsp1_1/fsp_util.c
index 6e490d32fa..5ce753f4d4 100644
--- a/src/drivers/intel/fsp1_1/fsp_util.c
+++ b/src/drivers/intel/fsp1_1/fsp_util.c
@@ -17,6 +17,7 @@
 #include <bootstate.h>
 #include <cbmem.h>
 #include <console/console.h>
+#include <console/streams.h>
 #include <fsp/util.h>
 #include <timestamp.h>
 
@@ -288,3 +289,9 @@ void fsp_display_upd_value(const char *name, uint32_t size, uint64_t old,
 		}
 	}
 }
+
+size_t EFIAPI fsp_write_line(uint8_t *buffer, size_t number_of_bytes)
+{
+	console_write_line(buffer, number_of_bytes);
+	return number_of_bytes;
+}
diff --git a/src/drivers/intel/fsp1_1/include/fsp/util.h b/src/drivers/intel/fsp1_1/include/fsp/util.h
index 07cf0c7de0..eea0c33a76 100644
--- a/src/drivers/intel/fsp1_1/include/fsp/util.h
+++ b/src/drivers/intel/fsp1_1/include/fsp/util.h
@@ -99,4 +99,13 @@ VOID * EFIAPI get_first_hob(UINT16 type);
 VOID * EFIAPI get_next_guid_hob(CONST EFI_GUID * guid, CONST VOID *hob_start);
 VOID * EFIAPI get_first_guid_hob(CONST EFI_GUID * guid);
 
+/*
+ * Writes number_of_bytes data bytes from buffer to the console.
+ * The number of bytes actually written to the console is returned.
+ *
+ * If number_of_bytes is zero, don't output any data but instead wait until
+ * the console has output all data, then return 0.
+ */
+size_t EFIAPI fsp_write_line(uint8_t *buffer, size_t number_of_bytes);
+
 #endif	/* FSP1_1_UTIL_H */