From c808f9f0c592f5c2b936e5a7865790b320ab95c3 Mon Sep 17 00:00:00 2001
From: Sergei Poselenov <sposelenov@emcraft.com>
Date: Tue, 4 Apr 2017 13:23:43 +0300
Subject: [PATCH] RM 1375. STM32: Move DMA memory region to the end of RAM.

---
 include/configs/stm-som.h              | 2 +-
 include/configs/stm32f7-som.h          | 2 +-
 include/configs/stm32f746-discovery.h  | 2 +-
 include/configs/stm32f769i-discovery.h | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/include/configs/stm-som.h b/include/configs/stm-som.h
index ae12de4..53de2f8 100644
--- a/include/configs/stm-som.h
+++ b/include/configs/stm-som.h
@@ -326,7 +326,7 @@
 #define CONFIG_DMAMEM_SZ_ALL	0x80000
 #define CONFIG_DMAMEM_SZ_FB	CONFIG_DMAMEM_SZ_ALL
 #define CONFIG_DMAMEM_BASE	(CONFIG_SYS_RAM_BASE + \
-				(CONFIG_SYS_RAM_SIZE / 2) - \
+				CONFIG_SYS_RAM_SIZE - \
 				CONFIG_DMAMEM_SZ_ALL)
 
 #define CONFIG_FB_ADDR		CONFIG_DMAMEM_BASE
diff --git a/include/configs/stm32f7-som.h b/include/configs/stm32f7-som.h
index 50721c4..c9c3afb 100644
--- a/include/configs/stm32f7-som.h
+++ b/include/configs/stm32f7-som.h
@@ -125,7 +125,7 @@
 # define CONFIG_DMAMEM_SZ_ALL		(1 << 20)	/* 1MB */
 # define CONFIG_DMAMEM_SZ_FB		(640 * 1024)
 # define CONFIG_DMAMEM_BASE		(CONFIG_SYS_RAM_BASE + \
-					 (CONFIG_SYS_RAM_SIZE / 2) - \
+					 CONFIG_SYS_RAM_SIZE - \
 					 CONFIG_DMAMEM_SZ_ALL)
 #endif
 
diff --git a/include/configs/stm32f746-discovery.h b/include/configs/stm32f746-discovery.h
index 80f3cb5..1b5220a 100644
--- a/include/configs/stm32f746-discovery.h
+++ b/include/configs/stm32f746-discovery.h
@@ -149,7 +149,7 @@
 # define CONFIG_DMAMEM_SZ_ALL		(1 << 20)	/* 1MB */
 # define CONFIG_DMAMEM_SZ_FB		(640 * 1024)
 # define CONFIG_DMAMEM_BASE		(CONFIG_SYS_RAM_BASE + \
-					 (CONFIG_SYS_RAM_SIZE / 2) - \
+					 CONFIG_SYS_RAM_SIZE - \
 					 CONFIG_DMAMEM_SZ_ALL)
 #endif
 
diff --git a/include/configs/stm32f769i-discovery.h b/include/configs/stm32f769i-discovery.h
index d991c42..d1bbdad 100644
--- a/include/configs/stm32f769i-discovery.h
+++ b/include/configs/stm32f769i-discovery.h
@@ -143,7 +143,7 @@
 # define CONFIG_DMAMEM_SZ_ALL		(1 << 21)	/* 2MB */
 # define CONFIG_DMAMEM_SZ_FB		(CONFIG_STM32F4_LTDC_XRES * CONFIG_STM32F4_LTDC_YRES * 4)
 # define CONFIG_DMAMEM_BASE		(CONFIG_SYS_RAM_BASE + \
-					 (CONFIG_SYS_RAM_SIZE / 2) - \
+					 CONFIG_SYS_RAM_SIZE - \
 					 CONFIG_DMAMEM_SZ_ALL)
 
 #define CONFIG_ARMCORTEXM3_SOC_INIT
-- 
GitLab