uniphier: switch to BL2-AT-EL3 and remove BL1 support

UniPhier platform implements non-TF boot ROM.  Prior to the BL2-AT-EL3
support, BL1 (worked as a pseudo ROM) was needed just for ensuring BL2
is entered at EL1-S.  Now, this platform is able to avoid this waste.

Enable the BL2_AT_EL3 option, and remove BL1.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/plat/socionext/uniphier/uniphier.h b/plat/socionext/uniphier/uniphier.h
index 95b29b8..2af30df 100644
--- a/plat/socionext/uniphier/uniphier.h
+++ b/plat/socionext/uniphier/uniphier.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -67,7 +67,9 @@
 unsigned int uniphier_calc_core_pos(u_register_t mpidr);
 
 #define UNIPHIER_NS_DRAM_BASE		0x84000000
-#define UNIPHIER_NS_DRAM_SIZE		0x01000000
+#define UNIPHIER_NS_DRAM_LIMIT		0x85000000
+#define UNIPHIER_NS_DRAM_SIZE		((UNIPHIER_NS_DRAM_LIMIT) - \
+					 (UNIPHIER_NS_DRAM_BASE))
 
 #define UNIPHIER_BL33_BASE		(UNIPHIER_NS_DRAM_BASE)
 #define UNIPHIER_BL33_MAX_SIZE		0x00100000
@@ -76,4 +78,9 @@
 					 (UNIPHIER_BL33_MAX_SIZE))
 #define UNIPHIER_SCP_MAX_SIZE		0x00020000
 
+#define UNIPHIER_BLOCK_BUF_BASE		((UNIPHIER_SCP_BASE) + \
+					 (UNIPHIER_SCP_MAX_SIZE))
+#define UNIPHIER_BLOCK_BUF_SIZE		((UNIPHIER_NS_DRAM_LIMIT) - \
+					 (UNIPHIER_BLOCK_BUF_BASE))
+
 #endif /* __UNIPHIER_H__ */