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authorBrian J. Nemec <bnemec@chromium.org>2019-12-10 16:48:22 -0800
committerCommit Bot <commit-bot@chromium.org>2019-12-17 14:46:08 +0000
commit2e5c1919194be8dfa8bfddc532ce6fa3fa10022b (patch)
treed3e9e1dcaa0a248f892e7beebb422b94a15d9f33
parentd0057c5466b67610386ca18cf0eb401b938c60c5 (diff)
downloadchrome-ec-2e5c1919194be8dfa8bfddc532ce6fa3fa10022b.tar.gz
Servo: Enable LTO to improve flash space
Enables LTO (Link Time Optimization) in order to improve flash space on ServoV4. Current builds have 48B remaining, the link time optimization frees up 6kB of space in the flash. Feature was enabled on ServoMicro and sweetberry. BRANCH=servo BUG=b:145512023 TEST=Manually tested flashing process to ensure they updated both regions, basic communication, and functionality on the following platforms: ServoV4, ServoMicro, and Sweetberry. Change-Id: I8f7a0d23478581c54a7379241a0290b897a635ea Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1961149 Tested-by: Brian Nemec <bnemec@chromium.org> Commit-Queue: Jett Rink <jettrink@chromium.org> Reviewed-by: Jett Rink <jettrink@chromium.org>
-rw-r--r--board/servo_micro/board.h2
-rw-r--r--board/servo_v4/board.h2
-rw-r--r--board/sweetberry/board.h2
3 files changed, 6 insertions, 0 deletions
diff --git a/board/servo_micro/board.h b/board/servo_micro/board.h
index 2806a70d25..99fa722fb4 100644
--- a/board/servo_micro/board.h
+++ b/board/servo_micro/board.h
@@ -8,6 +8,8 @@
#ifndef __CROS_EC_BOARD_H
#define __CROS_EC_BOARD_H
+#define CONFIG_LTO
+
/* 48 MHz SYSCLK clock frequency */
#define CPU_CLOCK 48000000
diff --git a/board/servo_v4/board.h b/board/servo_v4/board.h
index 2b302517f6..1ae13e8d25 100644
--- a/board/servo_v4/board.h
+++ b/board/servo_v4/board.h
@@ -8,6 +8,8 @@
#ifndef __CROS_EC_BOARD_H
#define __CROS_EC_BOARD_H
+#define CONFIG_LTO
+
/*
* Board Versions:
* Versions are designated by the PCB color and consist of red, blue, and
diff --git a/board/sweetberry/board.h b/board/sweetberry/board.h
index 43503e096e..1edea99b9a 100644
--- a/board/sweetberry/board.h
+++ b/board/sweetberry/board.h
@@ -8,6 +8,8 @@
#ifndef __CROS_EC_BOARD_H
#define __CROS_EC_BOARD_H
+#define CONFIG_LTO
+
/* Use external clock */
#define CONFIG_STM32_CLOCK_HSE_HZ 24000000