ARM: uniphier: reserve the last 64 byte of SDRAM

The last 64 byte of each DDR channel of PH1-LD20 is periodically
used as a scratch area for the DDR PHY training.

Signed-off-by: Masahiro Yamada <[email protected]>

diff --git a/include/configs/uniphier.h b/include/configs/uniphier.h
index fb405a9fe4ae4c5d7c84dfc012c7794ae0ca5fc4..a25ac8d92417d1d911fd07512e6e908fa9e6f1d2 100644 (file)
--- a/include/configs/uniphier.h
+++ b/include/configs/uniphier.h
@@ -259,6 +259,8 @@
 
 #define CONFIG_SYS_SDRAM_BASE          0x80000000
 #define CONFIG_NR_DRAM_BANKS           2
+/* for LD20; the last 64 byte is used for dynamic DDR PHY training */
+#define CONFIG_SYS_MEM_TOP_HIDE                64
 
 #if defined(CONFIG_ARM64)
 #define CONFIG_SPL_TEXT_BASE           0x30000000