allwinner: Move the NOBITS region to SRAM A1
This frees up space in SRAM A2 that will be used by the SCP firmware and
SCPI shared memory.
Signed-off-by: Samuel Holland <samuel@sholland.org>
Change-Id: I8ce035257451e2d142666fe0cd045e59d4d57b35
diff --git a/plat/allwinner/common/allwinner-common.mk b/plat/allwinner/common/allwinner-common.mk
index 5e8885d..af26ec0 100644
--- a/plat/allwinner/common/allwinner-common.mk
+++ b/plat/allwinner/common/allwinner-common.mk
@@ -56,6 +56,9 @@
# Allow mapping read-only data as execute-never.
SEPARATE_CODE_AND_RODATA := 1
+# Put NOBITS memory in SRAM A1, overwriting U-Boot's SPL.
+SEPARATE_NOBITS_REGION := 1
+
# BL31 gets loaded alongside BL33 (U-Boot) by U-Boot's SPL
RESET_TO_BL31 := 1
diff --git a/plat/allwinner/common/include/platform_def.h b/plat/allwinner/common/include/platform_def.h
index ede3881..4de8b0b 100644
--- a/plat/allwinner/common/include/platform_def.h
+++ b/plat/allwinner/common/include/platform_def.h
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2017-2019, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -16,6 +16,10 @@
#define BL31_BASE SUNXI_SRAM_A2_BASE
#define BL31_LIMIT (SUNXI_SRAM_A2_BASE + SUNXI_SRAM_A2_SIZE)
+/* Overwrite U-Boot SPL, but reserve the first page for the SPL header. */
+#define BL31_NOBITS_BASE (SUNXI_SRAM_A1_BASE + 0x1000)
+#define BL31_NOBITS_LIMIT (SUNXI_SRAM_A1_BASE + SUNXI_SRAM_A1_SIZE)
+
/* The traditional U-Boot load address is 160MB into DRAM, so at 0x4a000000 */
#define PLAT_SUNXI_NS_IMAGE_OFFSET (SUNXI_DRAM_BASE + (160U << 20))