AGESA vendorcode: Build a common amdlib

Having CFLAGS with -Os disables -falign-function, for
unlucky builds this may delay entry to ramstage by 600ms.
Build the low-level IO functions aligned with -O2 instead.

Change-Id: Ice6781666a0834f1e8e60a0c93048ac8472f27d9
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/14414
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

1 files changed, 35 insertions, 0 deletions

diff --git a/src/vendorcode/amd/agesa/common/Makefile.inc b/src/vendorcode/amd/agesa/common/Makefile.inc
new file mode 100644
index 0000000000..985354687e
--- /dev/null
+++ b/src/vendorcode/amd/agesa/common/Makefile.inc
@@ -0,0 +1,35 @@
+#*****************************************************************************
+#
+# Copyright (c) 2011, Advanced Micro Devices, Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#     * Redistributions of source code must retain the above copyright
+#       notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above copyright
+#       notice, this list of conditions and the following disclaimer in the
+#       documentation and/or other materials provided with the distribution.
+#     * Neither the name of Advanced Micro Devices, Inc. nor the names of 
+#       its contributors may be used to endorse or promote products derived 
+#       from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL ADVANCED MICRO DEVICES, INC. BE LIABLE FOR ANY
+# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+#*****************************************************************************
+
+libagesa-y += amdlib.c
+
+# Do not optimise performance-critical low-level IO for size with -Os,
+# request -O2 with -falign-functions.
+
+$(obj)/libagesa/vendorcode/amd/agesa/common/amdlib.o: CFLAGS_libagesa += -O2